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Succimer (DMSA) For Removing Lead

Studies On Succimer (DMSA) Used To Remove Toxic Lead From Human Bodies



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Published in 1997 through 1999
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Documents: 1 to 50 of 64

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1 Mückter H, et al; Are we ready to replace dimercaprol (BAL) as an arsenic antidote? (Hum Exp Toxicol, 1997 Aug, Abstract available) [MEDLINE]
2 Sigg T, et al; A report of pediatric SUCCIMER overdose. (Vet Hum Toxicol, 1998 Apr, Abstract available) [MEDLINE]
3 Bhatnagar A, et al; Renal imaging with 99Tc(m)-dextran. (Nucl Med Commun, 1997 Jun, Abstract available) [MEDLINE]
4 Bowden CA, et al; Clinical applications of commonly used contemporary antidotes. A US perspective. (Drug Saf, 1997 Jan, Abstract available) [MEDLINE]
5 Gordon RA, et al; Aggressive approach in the treatment of acute lead encephalopathy with an extraordinarily high concentration of lead. (Arch Pediatr Adolesc Med, 1998 Nov, Abstract available) [MEDLINE]
6 Blower PJ, et al; Pentavalent rhenium-188 dimercaptosuccinic acid for targeted radiotherapy: synthesis and preliminary animal and human studies. (Eur J Nucl Med, 1998 Jun, Abstract available) [MEDLINE]
7 Aaseth J, et al; Hemolytic activity of copper sulfate as influenced by epinephrine and chelating thiols. (Chung Kuo Yao Li Hsueh Pao, 1998 May, Abstract available) [MEDLINE]
8 Gerhardsson L, et al; Chelated lead in relation to lead in bone and ALAD genotype. (Environ Res, 1999 May, Abstract available) [MEDLINE]
9 Pigman EA, et al; Use of the Caco-2 cell model to assess the relative lead-chelating ability of diasterioisomers of 2,3-dimercaptosuccinic acid. (Environ Health Perspect, 1999 Feb, Abstract available) [MEDLINE]
10 Restek-Samarzija N, et al; Meso-2,3-dimercaptosuccinic acid in the treatment of occupationally exposed lead workers. (Arh Hig Rada Toksikol, 1998 Jun, Abstract available) [MEDLINE]

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11 Miller AL; Dimercaptosuccinic acid (DMSA), a non-toxic, water-soluble treatment for heavy metal toxicity. (Altern Med Rev, 1998 Jun, Abstract available) [MEDLINE]
12 Rodriguez JL, et al; Renal 99Tc(m)-DMSA SPET and planar imaging: are they really the same? (Nucl Med Commun, 1997 Jun, Abstract available) [MEDLINE]
13 Besunder JB, et al; Comparison of dimercaptosuccinic acid and calcium disodium ethylenediaminetetraacetic acid versus dimercaptopropanol and ethylenediaminetetraacetic acid in children with lead poisoning. (J Pediatr, 1997 Jun, Abstract available) [MEDLINE]
14 Wallin L, et al; Kidney swelling. Findings on DMSA scintigraphy. (Clin Nucl Med, 1997 May, Abstract available) [MEDLINE]
15 Balbay MD, et al; Quantitative evaluation of renal parenchymal mass with 99mtechnetium dimercapto-succinic acid scintigraphy after nephrolithotomy. (J Urol, 1997 Apr, Abstract available) [MEDLINE]
16 Van der Wall H, et al; Pentavalent 99mTc DMSA: uptake into a variety of human rhabdomyosarcoma xenografts. (In Vivo, 1997 Jan, Abstract available) [MEDLINE]
17 Hirano T, et al; Differentiating histologic malignancy of primary brain tumors: pentavalent technetium-99m-DMSA. (J Nucl Med, 1997 Jan, Abstract available) [MEDLINE]
18 Lifshitz M, et al; The effect of 2,3 dimercaptosuccinic acid in the treatment of lead poisoning in adults. (Ann Med, 1997 Feb, Abstract available) [MEDLINE]
19 Liu C, et al; Contralateral reflux after unilateral ureteral reimplantation--preexistent rather than new-onset reflux. (J Pediatr Surg, 1999 Nov, Abstract available) [MEDLINE]
20 Lynn S, et al; Vicinal-thiol-containing molecules enhance but mono-thiol-containing molecules reduce nickel-induced DNA strand breaks. (Toxicol Appl Pharmacol, 1999 Oct, Abstract available) [MEDLINE]

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21 Petit T, et al; Does the endoscopic incision of ureteroceles reduce the indications for partial nephrectomy? (BJU Int, 1999 Apr, Abstract available) [MEDLINE]
22 Schwartz BS, et al; Predictors of dimercaptosuccinic acid chelatable lead and tibial lead in former organolead manufacturing workers. (Occup Environ Med, 1999 Jan, Abstract available) [MEDLINE]
23 Reymond JM, et al; Sodium stibogluconate (pentostan) overdose in a patient with acquired immunodeficiency syndrome. (Ther Drug Monit, 1998 Dec, Abstract available) [MEDLINE]
24 Barry BP, et al; Improved ultrasound detection of renal scarring in children following urinary tract infection. (Clin Radiol, 1998 Oct, Abstract available) [MEDLINE]
25 Sixt R, et al; Assessment of infective urinary tract disorders. (Q J Nucl Med, 1998 Jun, Abstract available) [MEDLINE]
26 Konda R, et al; Soluble interleukin-2 receptor in children with reflux nephropathy. (J Urol, 1998 Feb, Abstract available) [MEDLINE]
27 Jéquier S, et al; Acute childhood pyelonephritis: predictive value of positive sonographic findings in regard to later parenchymal scarring. (Acad Radiol, 1998 May, Abstract available) [MEDLINE]
28 Choi Y, et al; Renovascular hypertension in children with moyamoya disease. (J Pediatr, 1997 Aug, Abstract available) [MEDLINE]
29 Kiratli PO, et al; Laurence-Moon-Biedl syndrome: scintigraphic appearance of kidneys. (Ann Nucl Med, 1997 May, Abstract available) [MEDLINE]
30 Arbab AS, et al; Scan findings of various myocardial SPECT agents in a case of amyloid polyneuropathy with suspected myocardial involvement. (Ann Nucl Med, 1997 May, Abstract available) [MEDLINE]

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31 Lavocat MP, et al; Imaging of pyelonephritis. (Pediatr Radiol, 1997 Feb, Abstract available) [MEDLINE]
32 Kobayashi H, et al; MRI and scintigraphic features of extraabdominal desmoid tumors. (Clin Imaging, 1997 Jan, Abstract available) [MEDLINE]
33 Benador D, et al; Are younger children at highest risk of renal sequelae after pyelonephritis? [see comments] (Lancet, 1997 Jan, Abstract available) [MEDLINE]
34 Hiraoka M, et al; Congenitally small kidneys with reflux as a common cause of nephropathy in boys. (Kidney Int, 1997 Sep, Abstract available) [MEDLINE]
35 Yeung CK, et al; The characteristics of primary vesico-ureteric reflux in male and female infants with pre-natal hydronephrosis. (Br J Urol, 1997 Aug, Abstract available) [MEDLINE]
36 Naseer SR, et al; New renal scars in children with urinary tract infections, vesicoureteral reflux and voiding dysfunction: a prospective evaluation. (J Urol, 1997 Aug, Abstract available) [MEDLINE]
37 Berlin CM Jr; Lead poisoning in children. (Curr Opin Pediatr, 1997 Apr, Abstract available) [MEDLINE]
38 Bernal J, et al; Full reversal of Pb++ block of L-type Ca++ channels requires treatment with heavy metal antidotes. (J Pharmacol Exp Ther, 1997 Jul, Abstract available) [MEDLINE]
39 Konda R, et al; Urinary excretion of epidermal growth factor in children with reflux nephropathy. (J Urol, 1997 Jun, Abstract available) [MEDLINE]
40 Konda R, et al; Followup study of renal function in children with reflux nephropathy after resolution of vesicoureteral reflux. (J Urol, 1997 Mar, Abstract available) [MEDLINE]

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41 The Treatment of Lead-exposed Children (TLC) trial: design and recruitment for a study of the effect of oral chelation on growth and development in toddlers. (Paediatr Perinat Epidemiol, 1998 Jul, Abstract available) [MEDLINE]
42 Bhattacharya A, et al; The effect of succimer therapy in lead intoxication using postural balance as a measure: a case study in a nine year old child. (Neurotoxicology, 1998 Feb, Abstract available) [MEDLINE]
43 Grandjean P, et al; Placebo response in environmental disease. Chelation therapy of patients with symptoms attributed to amalgam fillings. (J Occup Environ Med, 1997 Aug, Abstract available) [MEDLINE]
44 Fleming JS, et al; UK audit of relative renal function measurement using DMSA scintigraphy. (Nucl Med Commun, 1998 Oct, Abstract available) [MEDLINE]
45 OConnor ME, et al; Children with moderately elevated lead levels: is chelation with DMSA helpful? (Clin Pediatr (Phila), 1999 Jun, Abstract available) [MEDLINE]
46 Merguerian PA, et al; Utility of SPECT DMSA renal scanning in the evaluation of children with primary vesicoureteral reflux. (Urology, 1999 May, Abstract available) [MEDLINE]
47 Ditchfield MR, et al; The DMSA scan in paediatric urinary tract infection. (Australas Radiol, 1998 Nov, Abstract available) [MEDLINE]
48 Guha Mazumder DN, et al; Randomized placebo-controlled trial of 2,3-dimercaptosuccinic acid in therapy of chronic arsenicosis due to drinking arsenic-contaminated subsoil water. (J Toxicol Clin Toxicol, 1998, Abstract available) [MEDLINE]
49 Piepsz A, et al; Five-year study of medical of surgical treatment in children with severe vesico-ureteral reflux dimercaptosuccinic acid findings. International Reflux Study Group in Europe. (Eur J Pediatr, 1998 Sep, Abstract available) [MEDLINE]
50 Nathan I, et al; Alterations in membrane lipid dynamics of leukemic cells undergoing growth arrest and differentiation: dependency on the inducing agent. (Exp Cell Res, 1998 Mar, Abstract available) [MEDLINE]

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NLM database Documents

Record 1 from database: MEDLINE
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Title
Are we ready to replace dimercaprol (BAL) as an arsenic antidote?
Author
Mückter H; Liebl B; Reichl FX; Hunder G; Walther U; Fichtl B
Address
Walther-Straub-Institut fÂur Pharmakologie und Toxikologie, MÂunchen, Germany.
Source
Hum Exp Toxicol, 1997 Aug, 16:8, 460-5
Abstract
1 Dimercaprol (BAL), 2,3-dimercaptopropanesulphonate sodium (DMPS) and meso-2,3-dimercaptosuccinic acid (DMSA) are effective arsenic antidotes, but the question which one is preferable for optimal therapy of arsenic poisoning is still open to discussion. Major drawbacks of BAL include (a) its low therapeutic index, (b) its tendency to redistribute arsenic to brain and testes, for example, (c) the need for (painful) intramuscular injection and (d) its unpleasant odour. 2 The newer antidotes DMPS and DMSA feature low toxicity and high therapeutic index. They can be given orally or intravenously due to their high water solubility. While these advantages make it likely that DMPS and DMSA will replace BAL for the treatment of chronic arsenic poisoning, acute intoxication-especially with lipophilic organoarsenicals-may pose a problem for the hydrophilic antidotes, because their ionic nature can adversely affect intracellular availability. 3 This article focuses on aspects dealing with the power of BAL, DMPS, and DMSA to mobilize tissue-bound arsenic in various experimental models, such as monolayers of MDCK (= Madin-Darby canine kidney) cells from dog kidney, isolated perfused liver from guinea-pigs, and perfused jejunal segments from rat small intestine. 4 The results show that hydrophilic DMPS and DMSA may fail to rapidly and completely remove arsenic that has escaped from the extracellular space across tight epithelial barriers. However, owing to their low toxicity, which allows larger doses to be applied, and the potential modification of their pharmacokinetics by means of inert oral anion-exchange resins, DMPS and DMSA may advantageously replace BAL whenever intervention time is not critical. With severe intoxication by organic arsenicals, when the point-of-no-return is a limiting factor, BAL may still have a place as an arsenic antidote.
Language of Publication
English
Unique Identifier
97437753

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MeSH Heading (Major)
Antidotes|PK/TO/*TU; Arsenic|*PO; Dimercaprol|PK/TO/*TU; Poisoning|*DT
MeSH Heading
Animal; Dogs; Guinea Pigs; Human; Mice; Rats; Succimer|PK/TO/TU; Unithiol|PK/TO/TU

Publication Type
JOURNAL ARTICLE; REVIEW; REVIEW, TUTORIAL
ISSN
0960-3271
Country of Publication
ENGLAND

Record 2 from database: MEDLINE
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Title
A report of pediatric SUCCIMER overdose.
Author
Sigg T; Burda A; Leikin JB; Gossman W; Umanos J
Address
Illinois Poison Center, Chicago 60661, USA.
Source
Vet Hum Toxicol, 1998 Apr, 40:2, 90-1
Abstract
A 3-y-old child ingested SUCCIMER capsules to receive a dose of 185 mg dimercaptosuccinic acid/kg body weight. No adverse effects occurred.
Language of Publication
English
Unique Identifier
98214679

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MeSH Heading (Major)
Antidotes|AD/*AE; Chelating Agents|AD/*AE; Lead Poisoning|*DT; Succimer|AD/*AE
MeSH Heading
Case Report; Cathartics|TU; Charcoal|TU; Child, Preschool; Female; Human; Lead|BL; Sorbitol|TU

Publication Type
JOURNAL ARTICLE
ISSN
0145-6296
Country of Publication
UNITED STATES

Record 3 from database: MEDLINE
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Title
Renal imaging with 99Tc(m)-dextran.
Author
Bhatnagar A; Singh AK; Babbar A; Soni NL; Singh T
Address
Department of Nuclear Medicine, Institute of Nuclear Medicine and Allied Sciences, Lucknow Marg, Delhi, India.
Source
Nucl Med Commun, 1997 Jun, 18:6, 562-6
Abstract
Significant uptake and retention of 99Tc(m)-dextran (molecular weight: 81,000) in renal parenchyma was discovered during evaluation of its intravascular use. Renal SPET images confirmed this. This study was designed to evaluate 99Tc(m)-dextran as a renal cortex imaging agent. Stability of parenchymal retention was shown by insignificant outflow at 24 h and by frusemide intervention. Evaluation of the renal parameters of intravenous 99Tc(m)-dextran (n = 71 normal kidneys) and its comparison with 99Tc(m)-DTPA n = 10) and 99Tc(m)-DMSA(III) (n = 23) was undertaken. The early glomerular extraction phase of the renograms of 99Tc(m)-DTPA and 99Tc(m)-dextran appeared identical; parenchymal uptake of 99Tc(m)-dextran continued to increase and reached a near-plateau by 40-60 min. The mean cortex-to-background and cortex-to-liver ratios at 2 h with 99Tc(m)-dextran and 99Tc(m)-DMSA(III) were 14.9 and 9.2, and 16.0 and 8.9, respectively. The target-to-nontarget ratios were similar despite different absolute renal uptake values (12 vs 20% at 2 h) because of faster background clearance of 99Tc(m)-dextran. The mechanism of parenchymal retention of 99Tc(m)-dextran appears to be trapping at the endothelial-epithelial interphase of the glomerulus. Our initial experience suggests 99Tc(m)-dextran is a viable renal parenchyma imaging agent.
Language of Publication
English
Unique Identifier
97402465

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MeSH Heading (Major)
Dextrans|*DU/*PK; Kidney Cortex|DE/ME/*RI; Kidney Diseases|*RI; Organotechnetium Compounds|*DU/*PK; Radiopharmaceuticals|*DU/PK
MeSH Heading
Adolescence; Adult; Aged; Child; Child, Preschool; Comparative Study; Female; Furosemide|DU; Human; Injections, Intravenous; Male; Metabolic Clearance Rate; Middle Age; Reagent Kits, Diagnostic; Reference Values; Succimer|DU/PK; Technetium Tc 99m Pentetate|DU/PK; Tissue Distribution; Tomography, Emission-Computed, Single-Photon

Publication Type
JOURNAL ARTICLE
ISSN
0143-3636
Country of Publication
ENGLAND

Record 4 from database: MEDLINE
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Title
Clinical applications of commonly used contemporary antidotes. A US perspective.
Author
Bowden CA; Krenzelok EP
Address
Pharmacy Department, Methodist Hospital, Houston, Texas, USA.
Source
Drug Saf, 1997 Jan, 16:1, 9-47
Abstract
Poisonings are a common problem. In 1995, over 2 million exposures were reported to American poison information centres alone. The majority of poisoning exposures can be treated without major therapeutic intervention. If therapy is indicated, it is usually in the form of gastrointestinal decontamination with activated charcoal, to prevent absorption of the toxin and the subsequent toxicity that may occur. In a limited number of cases, more aggressive life-support measures may be necessary to treat the adverse effects of poisons. Occasionally, that intervention may include the use of pharmacological antagonists, more commonly referred to as antidotes. According to the American Association of Poison Control Centers, the most commonly used antidotes are acetylcysteine, naloxone, atropine, deferoxamine (desferrioxamine) and antivenins. Overall, 17 antidotes account for 99% of all antidote use and those agents are reviewed in this article. With the exception of naloxone, most antidotes have pharmacological effects that are independent of their inherent antidotal properties. Therefore, antidotes should be used judiciously because their pharmacological properties may exacerbate pre-existing toxicity and only in rare circumstances are they used prophylactically. Some antidotes, such as digoxin-specific antigen binding fragments (digoxin immune Fab), are very expensive, and both the risk: benefit ratio and the associated cost should be considered before the antidote is administered. The principle aims are to "treat the patient, not the poison' and to do no harm to the patient. Antidotes should be used only when they are indicated and may help a patient.
Language of Publication
English
Unique Identifier
97163886

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MeSH Heading (Major)
Antidotes|*TU; Poisoning|*DT
MeSH Heading
Acetylcysteine|AE/TU; Antivenins|AE/TU; Atropine|AE/TU; Deferoxamine|AE/TU; Flumazenil|AE/TU; Human; Hydroxocobalamin|AE/TU; Naloxone|AE/TU; Physostigmine|AE/TU; Succimer|AE/TU

Publication Type
JOURNAL ARTICLE; REVIEW; REVIEW, TUTORIAL
ISSN
0114-5916
Country of Publication
NEW ZEALAND

Record 5 from database: MEDLINE
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Title
Aggressive approach in the treatment of acute lead encephalopathy with an extraordinarily high concentration of lead.
Author
Gordon RA; Roberts G; Amin Z; Williams RH; Paloucek FP
Address
Department of Pharmacy Practice, College of Pharmacy, University of Illinois, Chicago 60612, USA.
Source
Arch Pediatr Adolesc Med, 1998 Nov, 152:11, 1100-4
Abstract
OBJECTIVE: To report a case of a 3-year-old child with an extraordinarily massive lead concentration, 26.4 micromol/L (550 microg/dL), following environmental exposure to lead paint in the home. LITERATURE REVIEW: The relevant literature concerning the treatment of lead encephalopathy was reviewed during the treatment of this child and preparation of the manuscript. To our knowledge, the landmark article written by Julian Chisolm in 1968 is the only recent article that reported similarly high levels of lead concentration. This case, however, is the first in which 3 chelating agents were used for the treatment of lead encephalopathy. We also reviewed the literature on the use of whole bowel irrigation in heavy metal intoxications. CONCLUSIONS: In this case, aggressive gut decontamination with whole bowel irrigation and triple chelation therapy with British anti-Lewisite, EDTA, and oral succimer was well tolerated and seemed effective for rapidly deleading the child. The extent to which her lead concentration increased while being treated with oral succimer alone necessitated further chelation with EDTA. Further evaluation is necessary to determine if triple chelation therapy is an appropriate method for severe lead intoxication, and if the use of whole bowel irrigation should be considered in heavy metal intoxication.
Language of Publication
English
Unique Identifier
99027427

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MeSH Heading (Major)
Brain Diseases|*ET/TH; Iron Chelating Agents|*TU; Lead|*BL; Lead Poisoning|BL/*TH
MeSH Heading
Case Report; Child, Preschool; Dimercaprol|TU; Edetic Acid|TU; Environmental Exposure; Female; Human; Irrigation; Paint|PO; Polyethylene Glycols|AD; Succimer|TU

Publication Type
JOURNAL ARTICLE; REVIEW; REVIEW OF REPORTED CASES
ISSN
1072-4710
Country of Publication
UNITED STATES

Record 6 from database: MEDLINE
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Title
Pentavalent rhenium-188 dimercaptosuccinic acid for targeted radiotherapy: synthesis and preliminary animal and human studies.
Author
Blower PJ; Lam ASK; ODoherty MJ; Kettle AG; Coakley AJ; Knapp FF Jr
Address
Nuclear Medicine Department, Kent and Canterbury Hospital, Canterbury, UK.
Source
Eur J Nucl Med, 1998 Jun, 25:6, 613-21
Abstract
Pentavalent rhenium-188 dimercaptosuccinic acid [188Re(V)DMSA] is a beta-emitting analogue of 99mTc(V)DMSA, a tracer that is taken up in a variety of tumours and bone metastases. The aim of this study was to develop the kit-based synthesis of the agent on a therapeutic scale, to assess its stability in vivo, and to obtain preliminary biodistribution and dosimetry estimates, prior to evaluation of its potential as a targeted radiotherapy agent. The organ distribution of 188Re in mice was determined 2 h after injection of 3 MBq 188Re(V)DMSA prepared from eluate from a 188W/188Re generator. Three patients with cancer of the prostate and three with cancer of the bronchus, all with bone metastases confirmed with a standard 99mTc-hydroxymethylene diphosphonate (99mTc-HDP) scan, were given 370 MBq 188Re(V)DMSA and imaged at 3 h and 24 h using the 155-keV gamma-photon (15%). Blood and urine samples were collected to determine clearance and to analyse the speciation of 188Re. Organ residence times were estimated from the scans, and used to estimate radiation doses using MIRDOSE 3. In mice, 188Re(V)DMSA was selective for bone and kidney. In patients, it showed selectivity for bone metastases (particularly those from prostate carcinoma) and kidney, but uptake in normal bone was not significantly greater than in surrounding soft tissues. Of the normal tissues the kidneys received the highest radiation dose (0.5-1.3 mGy/MBq). The images were strongly reminiscent of 99mTc(V)DMSA scans in similar patients. High-performance liquid chromatography analysis of blood and urine showed no evidence of 188Re in any chemical form other than 188Re(V)DMSA up to 24 h. In conclusion, 188Re(V)DMSA and its 186Re analogue warrant further clinical assessment as generator/kit-derived agents for treatment of painful bone metastases. These agents should also be assessed in medullary thyroid carcinoma and other soft tissue tumours which have been shown to accumulate 99mTc(V)DMSA.
Language of Publication
English
Unique Identifier
98283900

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MeSH Heading (Major)
Organometallic Compounds|*CS/PK/*TU; Radiopharmaceuticals|*CS/PK/*TU; Rhenium|PK/*TU; Succimer|*CS/PK/*TU
MeSH Heading
Aged; Aged, 80 and over; Animal; Bone Neoplasms|RI/SC; Case Report; Female; Human; Lung Neoplasms|RI; Male; Mice; Mice, Inbred BALB C; Middle Age; Prostatic Neoplasms|RI; Radiation Dosage; Radioisotopes|PK/TU; Support, U.S. Gov't, Non-P.H.S.; Tissue Distribution

Publication Type
JOURNAL ARTICLE
ISSN
0340-6997
Country of Publication
GERMANY

Record 7 from database: MEDLINE
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Title
Hemolytic activity of copper sulfate as influenced by epinephrine and chelating thiols.
Author
Aaseth J; Korkina LG; Afanasev IB
Address
Department of Medicine, Kongsvinger Hospital, Norway. joaaseth@hotmail.com
Source
Chung Kuo Yao Li Hsueh Pao, 1998 May, 19:3, 203-6
Abstract
AIM: To study the effects of epinephrine, homocysteine, and other complexing agents on the cytotoxicity of copper sulfate. METHODS: In vitro suspensions of human red cells incubated with cupric sulfate were used, and hemolysis was determined by extracellular hemoglobin. RESULTS: The hemolytic activity of CuSO4 (0.3 mmol.L-1) was enhanced by the presence of epinephrine and to a lesser extent by homocysteine, whereas D-penicillamine, succimer, and mercaptodextran reduced the copper-induced hemolysis. The latter 3 chelating thiols also reduced the copper-epinephrine-induced hemolysis. The plasma protein ceruloplasmin reduced markedly the copper-epinephrine-induced hemolysis, even upon concentrations < 20% of that of copper. Chromic chloride, as well, acted anti-hemolytically. CONCLUSION: The latter protectors may interact with the production or activity of toxic oxygen, while classical copper chelators sequester cupric ions from interaction with epinephrine or homocysteine.
Language of Publication
English
Unique Identifier
99304014

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MeSH Heading (Major)
Antidotes|*TO; Chelating Agents|*PD; Copper Sulfate|*TO; Epinephrine|*PD; Hemolysis|*DE
MeSH Heading
Adult; Ceruloplasmin|PD; Drug Synergism; Homocysteine|PD; Human; Penicillamine|PD; Succimer|PD

Publication Type
JOURNAL ARTICLE
ISSN
0253-9756
Country of Publication
CHINA

Record 8 from database: MEDLINE
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Title
Chelated lead in relation to lead in bone and ALAD genotype.
Author
Gerhardsson L; Börjesson J; Mattsson S; Schütz A; Skerfving S
Address
Department of Occupational and Environmental Medicine, University Hospital, Lund, SE-221 85, Sweden.
Source
Environ Res, 1999 May, 80:4, 389-98
Abstract
In order to assess whether lead in bone is available for chelation by 2,3 meso-dimercaptosuccinic acid (DMSA), 21 workers (10 active and 11 retired) from a secondary lead smeltery were studied. A morning urine sample was obtained from all participants, followed by ingestion of 10 mg per kg body weight of the chelating agent DMSA. All urine produced during the following 24 h was collected in consecutive 6- and 18-h portions. Concentrations of lead in blood (B-Pb) and urine were determined by flameless atomic absorption spectrometry (AAS), in plasma (P-Pb) by inductively coupled plasma mass spectrometry (ICP-MS), and in finger bone (Bone-Pb) by K X-ray fluorescence technique (XRF). DMSA-chelatable lead excreted in the 24-h portion correlated well with the excretion in the 6-h portion (U-Pb6h; rs=0.95; P<0.001). U-Pb6h showed a non-linear relationship to B-Pb (rs=0.84; P<0.001) and linear relationships to P-Pb (rs=0. 91; P<0.001) and lead in morning urine (rs=0.95; P<0.001). In active workers, but not in retired ones, P-Pb and U-Pb6h showed some relationship to Bone-Pb. In alternative multiple regression models B-Pb or P-Pb were both significant predictors of U-Pb6h, while Bone-Pb did not significantly improve the models. It can, thus, be concluded that DMSA-chelatable lead mainly reflects lead concentrations in blood, soft tissues, and possibly also trabecular bone. It is not a good index of total body burden and long-term exposure. For such estimations cortical Bone-Pb is more valid, as it contains the major fraction of long-term accumulated lead in the body. Further, the mobilization test did not give better information than measurements of lead levels in blood, plasma, or urine without chelation. Copyright 1999 Academic Press.
Language of Publication
English
Unique Identifier
99264504

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MeSH Heading (Major)
Bone and Bones|*DE/ME; Chelating Agents|*PD/TU; Lead|BL/*ME/UR; Porphobilinogen Synthase|BL/*GE; Succimer|*PD/TU
MeSH Heading
Age Factors; Body Burden; Dose-Response Relationship, Drug; Fingers; Genotype; Human; Metallurgy; Occupational Exposure; Regression Analysis; Retirement; Spectrometry, X-Ray Emission; Spectrophotometry, Atomic Absorption; Spectrum Analysis, Mass; Support, Non-U.S. Gov't; Time Factors

Publication Type
JOURNAL ARTICLE
ISSN
0013-9351
Country of Publication
UNITED STATES

Record 9 from database: MEDLINE
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Title
Use of the Caco-2 cell model to assess the relative lead-chelating ability of diasterioisomers of 2,3-dimercaptosuccinic acid.
Author
Pigman EA; Lott JR; Fernando Q; Blanchard J
Address
Department of Pharmaceutical Sciences, University of Arizona, College of Pharmacy, Tucson, AZ 85721 USA.
Source
Environ Health Perspect, 1999 Feb, 107:2, 111-5
Abstract
The purpose of this study was to examine the mechanisms of lead (Pb) uptake by human intestinal cells and to compare the intestinal transport and relative lead-chelating ability of two diastereoisomeric forms (i.e., meso and racemic) of 2, 3-dimercaptosuccinic acid (DMSA). The model used was the human adenocarcinoma (Caco-2) cell monolayer. The Caco-2 cells were cultured in flasks for examination of cellular uptake of lead and subsequent chelation of the lead by the DMSA isomers. For assessment of the comparative intestinal transport of the diastereoisomers, the Caco-2 cells were cultured on semipermeable supports. The effects of N-ethylmaleimide and 1,25-dihydroxyvitamin D3 (vitamin D3) on the uptake of lead by the Caco-2 monolayer were examined to determine the contributions of sulfhydryl-binding and calcium-binding protein, respectively, to the lead uptake process. Analysis of lead was performed using both macro- and micro-proton-induced X-ray emission (PIXE), and DMSA was measured spectrophotometrically following derivatization with 5,5'-dithiobis-2-nitrobenzoic acid. Results from micro-PIXE imaging suggest that lead is bound on the surface of the cell, and that sulfhydryl binding may be an important step in the uptake of lead by the Caco-2 cells. Macro-PIXE results indicate that the racemic form of DMSA may be more effective in chelating lead from within the cell. Comparison of the transport of the two DMSA diastereoisomers indicates that the racemic form is transported across the Caco-2 monolayer more readily than the meso form.
Language of Publication
English
Unique Identifier
99122932

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MeSH Heading (Major)
Chelating Agents|CH/*PD; Lead|*ME/TO; Succimer|CH/*PD
MeSH Heading
Caco-2 Cells; Cell Membrane|ME; Cell Survival|DE; Human; Spectrometry, X-Ray Emission; Stereoisomerism; Support, Non-U.S. Gov't; Support, U.S. Gov't, P.H.S.

Publication Type
JOURNAL ARTICLE
ISSN
0091-6765
Country of Publication
UNITED STATES

Record 10 from database: MEDLINE
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Title
Meso-2,3-dimercaptosuccinic acid in the treatment of occupationally exposed lead workers.
Author
Restek-Samarzija N; Blanusa M; Pizent A; Samarzija M; Turk R; Corovic N; Jurasovic J
Address
Institute for Medical Research and Occupational Health, Zagreb, Croatia.
Source
Arh Hig Rada Toksikol, 1998 Jun, 49:2, 137-45
Abstract
The aim of this study was to evaluate the efficacy of meso-2,3-dimercaptosuccinic acid (DMSA) treatment in workers with increased lead absorption and no overt symptoms of lead poisoning. Seven occupationally lead exposed male workers with blood lead concentrations (PbB) exceeding 50 micrograms/100 ml and a positive calcium disodium ethylenediaminetetraacetate (EDTA) lead mobilization test were treated with DMSA for 19 days. Individual doses were 700 mg DMSA, three times a day from day one to five, and twice a day from day six to 19. The treatment intensified urinary lead excretion, most rapidly during the first five days. The increased elimination was followed by a decline of mean PbB to 15% of the pretreatment values. However, 15 days after the treatment, the PbB concentrations rebounded, yet kept below the baseline values and did not exceed 40 micrograms/100 ml. After repeated EDTA lead mobilization test, urine lead was 23-68% of that before DMSA treatment. It can be concluded that DMSA can effectively reduce chelatable lead in occupationally exposed workers.
Language of Publication
English
Unique Identifier
99118372

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MeSH Heading (Major)
Chelating Agents|*TU; Lead|*BL/UR; Occupational Exposure|*; Succimer|*TU
MeSH Heading
Adult; Human; Lead Poisoning|TH; Male; Middle Age; Support, Non-U.S. Gov't

Publication Type
JOURNAL ARTICLE
ISSN
0004-1254
Country of Publication
CROATIA
CAS Registry/EC Number
0 (Chelating Agents); 304-55-2 (Succimer); 7439-92-1 (Lead)

 


Record 11 from database: MEDLINE
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Title
Dimercaptosuccinic acid (DMSA), a non-toxic, water-soluble treatment for heavy metal toxicity.
Author
Miller AL
Address
Alternative Medicine Review. P.O. Box 25, Dover, ID 83825, USA. alan@thorne.com
Source
Altern Med Rev, 1998 Jun, 3:3, 199-207
Abstract
Heavy metals are, unfortunately, present in the air, water, and food supply. Cases of severe acute lead, mercury, arsenic, and cadmium poisoning are rare; however, when they do occur an effective, non-toxic treatment is essential. In addition, chronic, low-level exposure to lead in the soil and in residues of lead-based paint, to mercury in the atmosphere, in dental amalgams and in seafood, and to cadmium and arsenic in the environment and in cigarette smoke is much more common than acute exposure. Meso-2,3-dimercaptosuccinic acid (DMSA) is a sulfhydryl-containing, water-soluble, non-toxic, orally-administered metal chelator which has been in use as an antidote to heavy metal toxicity since the 1950s. More recent clinical use and research substantiates this compound s efficacy and safety, and establishes it as the premier metal chelation compound, based on oral dosing, urinary excretion, and its safety characteristics compared to other chelating substances.
Language of Publication
English
Unique Identifier
98331854

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MeSH Heading (Major)
Chelating Agents|PK/*TU; Metals, Heavy|*PO; Succimer|PK/*TU
MeSH Heading
Arsenic|PO; Cadmium Poisoning|DT; Human; Lead Poisoning|DT; Mercury Poisoning|DT; Poisoning|DT

Publication Type
JOURNAL ARTICLE; REVIEW; REVIEW, TUTORIAL
ISSN
1089-5159
Country of Publication
UNITED STATES

Record 12 from database: MEDLINE
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Title
Renal 99Tc(m)-DMSA SPET and planar imaging: are they really the same?
Author
Rodriguez JL; Perera A; Fraxedas R; Reyes L; Hernandez A; Solano ME
Address
Centre for Clinical Research, Playa, Havana, Cuba.
Source
Nucl Med Commun, 1997 Jun, 18:6, 556-61
Abstract
Previous studies have suggested that more defects are detected on SPET than on planar DMSA images. The aim of this study was to evaluate differences between planar and SPET imaging. Sixty-four kidneys from pyelonephritic patients were studied using both techniques. An automated algorithm for reorientation and centring of the SPET images was used to minimize inter-observer variability. Reduced uptake and contour defects showed different localization on planar and SPET imaging. Coincidence of defects on both types of image was low. We also noted a dependence on defect frequency content for detectability. Image contrast played a noticeable role in the detection of defects. Differences in contrast between SPET and planar images may be responsible for the variable success in the detection of defects. Contour defects are seen more frequently on tomographic slices, whereas reduced uptake defects are seen more frequently on planar images. A difference is also noted between the cortical and calyceal zones for differently contrasted lesions. SPET and planar DMSA images can potentially provide a different diagnosis of renal lesions.
Language of Publication
English
Unique Identifier
97402464

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MeSH Heading (Major)
Kidney|*RI; Organotechnetium Compounds|*DU/PK; Pyelonephritis|*RI; Succimer|*DU/PK; Tomography, Emission-Computed|*; Tomography, Emission-Computed, Single-Photon|*
MeSH Heading
Adult; Algorithms; Comparative Study; Human; Models, Theoretical; Reproducibility of Results; Tissue Distribution

Publication Type
JOURNAL ARTICLE
ISSN
0143-3636
Country of Publication
ENGLAND

Record 13 from database: MEDLINE
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Title
Comparison of dimercaptosuccinic acid and calcium disodium ethylenediaminetetraacetic acid versus dimercaptopropanol and ethylenediaminetetraacetic acid in children with lead poisoning.
Author
Besunder JB; Super DM; Anderson RL
Address
Department of Pediatrics, MetroHealth Medical Center, Cleveland, OH 44109-1998, USA.
Source
J Pediatr, 1997 Jun, 130:6, 966-71
Abstract
OBJECTIVES: To compare the response to dimercaptopropanol (BAL) and calcium disodium ethylenediaminetetraacetic acid (EDTA) versus orally administered meso-2,3-dimercaptosuccinic acid (DMSA) and EDTA in children with lead poisoning. METHODS: Retrospective review of medical records of children admitted to MetroHealth Medical Center with a whole blood lead (BPb) concentration of 2.17 mumol/L (45 micrograms/dl) or more (or less than 2.17 mumol/L and not a candidate for outpatient oral chelation) and treated with BAL + EDTA or DMSA + EDTA. In each group, the mean BPb values at the end of therapy and at 14 and 33 days after chelation were compared with pretreatment BPb by the Wilcoxon signed-rank test, whereas the Mann-Whitney U test was used to compare percentage change from pretreatment at each follow-up day between the two groups. RESULTS: Twenty-three children received BAL + EDTA and 22 received DMSA + EDTA. The BPb values (mean +/- SD) at the end of therapy and at 14 and 33 days after chelation were significantly lower than pretreatment in both groups (BAL + EDTA: 17 +/- 10, 34 +/- 7, 36 +/- 11 vs 58 +/- 14 micrograms/dl, p < 0.02, 0.01, 0.001, respectively; DMSA + EDTA: 10 +/- 4, 30 +/- 10, 30 +/- 14 vs 50 +/- 10 micrograms/dl, p < 0.01, 0.001, 0.01, respectively). The percentage reduction (mean +/- SD) in BPb from pretreatment at the end of therapy and on days 14 and 33 after chelation did not differ between the groups (BAL + EDTA: -71.2% +/- 19.8%, -40.2% +/- 13.8%, -37.1% +/- 17%; DMSA + EDTA: -79.9% +/- 8.7%, -38.3% +/- 21.6%, -37% +/- 32%; p > 0.20). Elevation of alanine aminotransferase and vomiting during therapy were observed more frequently in the BAL + EDTA group compared with the DMSA + EDTA group. CONCLUSIONS: Treatment with DMSA or BAL combined with EDTA results in a comparable reduction in BPb.
Language of Publication
English
Unique Identifier
97346201

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MeSH Heading (Major)
Edetic Acid|AE/*TU; Lead Poisoning|BL/*DT; Succimer|AE/*TU
MeSH Heading
Alanine Transaminase|BL; Blood Urea Nitrogen; Child; Child, Preschool; Comparative Study; Creatinine|BL; Female; Hemoglobins; Human; Male; Retrospective Studies; Vomiting|ET

Publication Type
JOURNAL ARTICLE
ISSN
0022-3476
Country of Publication
UNITED STATES

Record 14 from database: MEDLINE
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Title
Kidney swelling. Findings on DMSA scintigraphy.
Author
Wallin L; Helin I; Bajc M
Address
Department of Clinical Physiology, Lund University Hospital, Sweden.
Source
Clin Nucl Med, 1997 May, 22:5, 292-9
Abstract
OBJECTIVE: To develop criteria identifying swollen kidneys on dimercaptosuccinic acid (DMSA) renal scintigraphy in acute pyelonephritis with regard to the DMSA distribution pattern, kidney functional size, and radioactive uptake. SUBJECTS AND METHODS: Thirty-eight children aged 15 days to 7 years with known pyelonephritis were examined with DMSA renal scintigraphy. All children were observed 2 or 3 times. In total, 94 scintigrams were evaluated. Qualitative and quantitative criteria for swelling were defined. RESULTS: Thirty-one observed kidneys satisfied the criteria of swelling. Quantitatively, kidney length and width/length were greater in swollen kidneys. Kidney uptake in percent of injected dose and kidney uptake/background were lower in swollen kidneys. Qualitatively, focal radioactive uptake defects known from a previous examination were sometimes obscured by swelling, and reappeared at follow-up. In 5 children with signs of swelling on repeat imaging, scintigraphy reinfection at the time of swelling was verified. CONCLUSIONS: Swollen kidneys may be the only sign of acute pyelonephritis on DMSA scintigraphy and swelling may obscure focal radioactive uptake defects. Measurement of kidney size and radioactive uptake can help identify swollen kidneys at DMSA scintigraphy and disclose acute pyelonephritis in the absence of overt clinical symptoms.
Language of Publication
English
Unique Identifier
97297057

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MeSH Heading (Major)
Kidney|ME/PA/PP/*RI; Organotechnetium Compounds|*DU/PK; Pyelonephritis|ME/PA/PP/*RI; Radiopharmaceuticals|*DU/PK; Succimer|*DU/PK
MeSH Heading
Acute Disease; Child; Child, Preschool; Edema|ME/PA/PP/RI; Follow-Up Studies; Human; Infant; Infant, Newborn; Support, Non-U.S. Gov't

Publication Type
JOURNAL ARTICLE
ISSN
0363-9762
Country of Publication
UNITED STATES

Record 15 from database: MEDLINE
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Title
Quantitative evaluation of renal parenchymal mass with 99mtechnetium dimercapto-succinic acid scintigraphy after nephrolithotomy.
Author
Balbay MD; Varoglu E; Devrim H; Sahin A; Atan A; Ergen A; Remzi D
Address
Department of Urology, Hacettepe University, School of Medicine, Ankara, Turkey.
Source
J Urol, 1997 Apr, 157:4, 1226-8
Abstract
PURPOSE: We detected renal parenchymal damage after nephrolithotomy. MATERIALS AND METHODS: We studied 12 patients with renal stones treated with nephrolithotomy. Renal function was determined with serum blood urea nitrogen (BUN) and creatinine values, and 99mtechnetium dimercapto-succinic acid scintigraphy of renal parenchymal tissue was performed before, and 7 days and 3 months after nephrolithotomy. Qualitative and quantitative analyses were done with the Wilcoxon signed rank test. RESULTS: There was no visual difference in size and appearance of the nephrotomy site between preoperative and postoperative visual scintigraphic evaluations. Quantitative data did not reveal any significant difference between kidneys with and without a nephrotomy incision (p > 0.05), as well as between nephrotomy regions and intact parenchyma within the same kidney (p > 0.05) 3 months after nephrolithotomy. There was no significant difference in serum BUN and creatinine levels between values preoperatively and 3 months postoperatively (p > 0.05). CONCLUSIONS: There was no significant change in renal cortical function and functioning renal parenchymal mass after nephrolithotomy as shown by serum BUN and creatinine levels, and 99mtechnetium dimercapto-succinic acid scintigraphy.
Language of Publication
English
Unique Identifier
97223153

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MeSH Heading (Major)
Kidney|*RI; Kidney Calculi|*SU; Nephrostomy, Percutaneous|*AE; Organotechnetium Compounds|*DU/PK; Succimer|*DU/PK
MeSH Heading
Adolescence; Adult; Aged; Child; Female; Human; Male; Middle Age; Prospective Studies

Publication Type
CLINICAL TRIAL; JOURNAL ARTICLE
ISSN
0022-5347
Country of Publication
UNITED STATES

Record 16 from database: MEDLINE
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Title
Pentavalent 99mTc DMSA: uptake into a variety of human rhabdomyosarcoma xografts.
Author
Van der Wall H; Henderson D; Baker R; Murray IP
Address
Department of Nuclear Medicine, Prince of Wales Hospital, Sydney, Australia.
Source
In Vivo, 1997 Jan, 11:1, 45-50
Abstract
BACKGROUND: Rhabdomyosarcoma is a common soft tissue sarcoma of childhood. While Ga is currently the most accurate modality for imaging residual or recurrent tumour its dosimetry is unfavourable. Pentavalent 99mTc DMSA [99mTc (V) DMSA] has been shown to accumulate in this tumour in a limited number of clinical cases. METHODS: Biodistribution of 99mTc (V) DMSA was determined in non-tumour bearing BALB-C mice. Operative specimens from four clinically 67Ga avid tumours were xenografted into nude mice and allowed to reach a significant size. Biodistribution studies were performed after the injection of 99mTc (V) DMSA in all animals and 125I HSA and 67Ga in a limited number of animals. RESULTS: None of the tumours investigated demonstrated significant 99mTc (V) DMSA accumulation. Biodistribution was identical in tumour and non-tumour bearing animals. CONCLUSIONS: Rhabdomyo-sarcoma xenografts do not demonstrate significant uptake of 99mTc (V) DMSA.
Language of Publication
English
Unique Identifier
97220610

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MeSH Heading (Major)
Organotechnetium Compounds|*DU/PK; Rhabdomyosarcoma|*RI; Succimer|*DU/PK
MeSH Heading
Albumins|PK; Animal; Child; Comparative Study; Gallium Radioisotopes|DU/PK; Human; Iodine Radioisotopes|DU/PK; Kinetics; Mice; Mice, Inbred BALB C; Mice, Nude; Neoplasm Transplantation; Tissue Distribution; Transplantation, Heterologous

Publication Type
JOURNAL ARTICLE
ISSN
0258-851X
Country of Publication
GREECE

Record 17 from database: MEDLINE
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Title
Differentiating histologic malignancy of primary brain tumors: pentavalent technetium-99m-DMSA.
Author
Hirano T; Otake H; Shibasaki T; Tamura M; Endo K
Address
Department of Nuclear Medicine, Gunma University, School of Medicine, Japan.
Source
J Nucl Med, 1997 Jan, 38:1, 20-6
Abstract
This study assessed pentavalent 99mTc-DMSA uptake in primary brain tumors and evaluated the relationship between retention and histologic malignancy. METHODS: SPECT images of the brain were obtained at 30 min and 3 hr after intravenous administration of approximately 555 MBq 99mTc(V)-DMSA in patients with brain tumors. Sixty studies were performed in 57 patients and 63 lesions were demonstrated: 11 glioblastomas, 13 anaplastic astrocytomas (Grade 3), 11 astrocytomas (Grade 2), 18 meningiomas and 10 schwannomas. Uptake ratios, retention ratio and retention index were calculated and compared with tumor histology and malignancy grade. RESULTS: Approximately 95% of both benign and malignant primary brain tumors were demonstrated by 99mTc(V)-DMSA SPECT images. False negative was noted in three cases. The early uptake ratios were closely related to the tumor vascularity but had no statistically significant difference in the tumor histology or histologic malignancy. The delayed uptake ratio, retention ratio and retention index were higher in the malignant tumors than the benign tumors. CONCLUSION: Technetium-99m(V)-DMSA washout from the tumor was highly dependent upon its histology and histologic malignancy. The delayed uptake ratio considerably reflected tumor histology and differentiated benign tumors from malignant tumors. The retention ratio and retention index significantly reflected tumor histology and histologic grade of primary brain tumors and clearly distinguished between benign and malignant tumors with statistically significant difference (p < 0.05). These results could suggest the clinical utility of 99mTc(V)-DMSA in imaging primary brain tumors and differentiating their histological malignancy grade noninvasively.
Language of Publication
English
Unique Identifier
97152211

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MeSH Heading (Major)
Brain Neoplasms|ME/*RI; Organotechnetium Compounds|*DU/PK; Succimer|*DU/PK
MeSH Heading
Adolescence; Adult; Aged; Astrocytoma|ME/RI; Child; Female; Glioblastoma|ME/RI; Glioma|ME/RI; Human; Male; Meningeal Neoplasms|ME/RI; Meningioma|ME/RI; Middle Age; Neurilemmoma|ME/RI; Oligodendroglioma|ME/RI

Publication Type
JOURNAL ARTICLE
ISSN
0161-5505
Country of Publication
UNITED STATES

Record 18 from database: MEDLINE
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Title
The effect of 2,3 dimercaptosuccinic acid in the treatment of lead poisoning in adults.
Author
Lifshitz M; Hashkanazi R; Phillip M
Address
Division of Clinical Toxicology, Soroka Medical Center, Beer-Sheva, Israel.
Source
Ann Med, 1997 Feb, 29:1, 83-5
Abstract
Four patients, aged 22-60, belonging to a single family that had been exposed to lead-contaminated food for an unknown period, and nine workers, aged 20-65, who had been exposed to air-borne lead for 6-8 years, were evaluated for lead poisoning in our centres. Blood lead levels were 3.57 +/- 0.39 micromol/L (mean +/- SD) in the family members and 3.46 +/- 0.43 micromol/L (mean +/- SD) in the group of workers. 2,3 dimercaptosuccinic acid (DMSA) therapy was instituted in the four family members while the nine workers were closely monitored after being removed from the contaminated environment without receiving any chelation therapy. DMSA therapy given for the duration of 19 days reduced the blood lead levels to 0.63 +/- 0.44 micromol/L (mean +/- SD), P<0.01, in the four family members. No significant change was observed in the untreated group. The exposure time in the untreated group was probably longer than that in the treated group. Following long-term exposure most of the lead in the body is found in the bones and therefore not easily removed by chelation therapy. No side-effects were reported in the treated group and no rebound elevation of blood lead levels was observed during the therapy period or during the 12-week follow-up period following cessation of therapy. We conclude that 19 days of chelation therapy with DMSA in adults with moderate to severe lead poisoning is effective and safe.
Language of Publication
English
Unique Identifier
97226058

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MeSH Heading (Major)
Lead Poisoning|BL/*DT; Succimer|PD/*TU
MeSH Heading
Administration, Oral; Adult; Aged; Case Report; Human; Lead|BL; Middle Age

Publication Type
JOURNAL ARTICLE
ISSN
0785-3890
Country of Publication
ENGLAND

Record 19 from database: MEDLINE
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Title
Contralateral reflux after unilateral ureteral reimplantation--preexistent rather than new-onset reflux.
Author
Liu C; Chin T; Wei C
Address
Department of Surgery, Veterans General Hospital-Taipei, Taipei, Taiwan, Republic of China.
Source
J Pediatr Surg, 1999 Nov, 34:11, 1661-4
Abstract
PURPOSE: The authors studied the preoperative Technetium 99m-dimercaptosuccinic acid renal scan (DMSA) of patients undergoing unilateral vesicoureteral antireflux surgery to compare the amount of renal scarring between the refluxing and the contralateral renal units. They sought to determine whether postoperative contralateral vesicoureteral reflux was preexistent or new onset. METHODS: Sixty-eight patients who underwent unilateral vesicoureteral antireflux surgery and had preoperative DMSA and postoperative voiding cystourethrography (VCUG) examinations were studied. Preoperative DMSA results were analyzed to determine the amount of renal scarring in each kidney. RESULTS: Sixty-four (94.1%) ipsilateral refluxing renal units had renal scars. Of the 68 contralateral renal units, scars were noted in 28 (41.2%). The rate of nonscar was 4 of 68 (5.9%) in reflux kidneys, which was significantly lower than 40 of 64 (62.5%, excluding 4 with a history of resolved reflux) in nonreflux kidneys (P<.001). Of 40 contralateral nonscarred kidneys, 1 of 40 (2.5%) had subsequent reflux, which was significantly lower than 5 of 28 (17.9%) of scarred kidneys (P<.005). Six patients (8.8%) had contralateral reflux, and 1 of them had a history of resolved reflux. Of the 6 contralateral kidneys with severe scarring involving 3 poles or contracted, 4 of 6 (66.7%) had subsequent reflux. CONCLUSIONS: Scar in the contralateral kidney seen on DMSA scan seems to predict contralateral reflux after unilateral antireflux surgery. The contralateral reflux may be preexistent. Postoperative VCUG should be performed routinely for patients who have contralateral renal scars. In patients with a history of contralateral reflux or severe contralateral renal scar, simultaneous contralateral ureteral reimplantation should be considered.
Language of Publication
English
Unique Identifier
20057565

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MeSH Heading (Major)
Kidney|*PA/RI; Ureter|AB/*SU; Urologic Surgical Procedures|*AE/MT; Vesico-Ureteral Reflux|EP/*ET/*RI
MeSH Heading
Adolescence; Child; Child, Preschool; Female; Follow-Up Studies; Human; Infant; Male; Retrospective Studies; Risk Assessment; Sensitivity and Specificity; Succimer|DU; Tomography, Emission-Computed, Single-Photon|MT

Publication Type
CLINICAL TRIAL; JOURNAL ARTICLE
ISSN
0022-3468
Country of Publication
UNITED STATES

Record 20 from database: MEDLINE
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Title
Vicinal-thiol-containing molecules enhance but mono-thiol-containing molecules reduce nickel-induced DNA strand breaks.
Author
Lynn S; Yu GL; Yan K
Address
Institute of Zoology, Academia Sinica, Taipei, Taiwan, 11529, Republic of China.
Source
Toxicol Appl Pharmacol, 1999 Oct, 160:2, 198-205
Abstract
Several thiol-containing molecules (TCM) are currently used as antidotes for nickel, and vicinal TCM seem to be more effective in mobilizing tissue nickel than are mono TCM. Using single cell alkaline electrophoresis, we have shown that the vicinal TCM, meso-2, 3-dimercaptosuccinic acid (DMSA), 2,3-dimercaptopropane-1-sulfonate, and 2,3-dimercaptopropanol markedly enhanced, whereas the mono TCM, D-penicillamide, glutathione, beta-mercaptoethanol, and diethyl dithiocarbomate, reduced nickel chloride (Ni)-induced DNA breaks in a human leukemia cell line, NB4 cells. Ni or TCM alone did not induce plasmid DNA breaks in test tubes and neither did Ni plus mono TCM; however, Ni plus vicinal TCM did. Vicinal TCM did, but mono TCM did not generate H(2)O(2) in solution. H(2)O(2) alone did not, but H(2)O(2) plus Ni induced plasmid DNA breaks. Although Ni plus glutathione did not break DNA, Ni plus glutathione plus H(2)O(2) did. The Ni-DMSA-induced DNA breaks in NB4 cells, as well as in plasmids, were completely prevented by d-mannitol or partially prevented by several antioxidants. Therefore, the DNA breaks induced by Ni plus vicinal TCM seem to be due to the complex of Ni with TCM in concert with the H(2)O(2) produced by the vicinal TCM. The results that DMSA at a concentration as low as 5 microM enhanced the Ni-induced DNA breaks suggest a further evaluation of the TCM as nickel chelators is needed. Copyright 1999 Academic Press.
Language of Publication
English
Unique Identifier
99459086

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MeSH Heading (Major)
DNA Damage|*; Nickel|AI/CH/PD/*TO; Sulfhydryl Compounds|CH/*PD
MeSH Heading
Cell Line|DE; Comet Assay; Comparative Study; Dimercaprol|PD; Ditiocarb|PD; Dose-Response Relationship, Drug; Drug Synergism; Glutathione|PD; Human; Mercaptoethanol|PD; Oxidation-Reduction; Penicillic Acid|AA/PD; Plasmids|DE; Succimer|PD; Support, Non-U.S. Gov't

Publication Type
JOURNAL ARTICLE
ISSN
0041-008X
Country of Publication
UNITED STATES

Record 21 from database: MEDLINE
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Title
Does the endoscopic incision of ureteroceles reduce the indications for partial nephrectomy?
Author
Petit T; Ravasse P; Delmas P
Address
Department of Paediatric Surgery, Caen University Hospital, Caen, France.
Source
BJU Int, 1999 Apr, 83:6, 675-8
Abstract
OBJECTIVE: To determine whether the endoscopic incision of ureteroceles reduces the indications for partial nephrectomy. PATIENTS AND METHODS: Between 1987 and 1996, endoscopic incision was used as the first-line treatment of 18 children (13 boys, five girls, aged 8 days to 6 months) with a duplex-system ureterocele diagnosed antenatally (15) or in the first weeks of life during the course of a urinary infection (three). Of the 19 ureteroceles (one bilateral), four were intravesical and 15 ectopic, according to the American Academy of Paediatrics classification. Vesico-ureteric reflux into the inferior pole of the kidney was present in 10 children, seven of whom had an ectopic ureterocele. A functioning upper pole was detected by intravenous pyelography (IVP) in half the intravesical and in a third of the ectopic ureteroceles. RESULTS: Endoscopic incision resulted in decompression and reduction of dilatation in 16 cases; three with inferior pole reflux resolved on control cystography, whilst in seven with an ectopic ureterocele, reflux into the upper urinary tract was induced by endoscopic incision. In three children with an ectopic ureterocele, renal function had improved at 3 months, as assessed by IVP. Endoscopic incision was the only treatment for half the intravesical and six of 15 ectopic ureteroceles. Overall, nephrectomy was required in four of 18 patients (three partial nephrectomies for persistent dilatation and one total nephrectomy). Five nonfunctioning, undilated upper poles with no reflux were left in place. Nine vesico-ureteric reimplantations for persistent or induced reflux were carried out using the Cohen technique. CONCLUSION: Endoscopic incision can allow the deferral of nephrectomy, facilitate lower urinary tract reconstruction and reduce the indications for partial nephrectomy, if it is accepted that a nonfunctioning, undilated renal pole with no reflux can safely be left in place.
Language of Publication
English
Unique Identifier
99252518

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MeSH Heading (Major)
Nephrectomy|*MT; Surgical Procedures, Endoscopic|*MT; Ureterocele|RI/*SU
MeSH Heading
Electrocoagulation|MT; Female; Human; Infant; Infant, Newborn; Male; Retrospective Studies; Succimer|DU; Urinary