Evidence map›Paper›PMID 23143832›Full record

ArticleJournal of medical toxicology : official journal of the American College of Medical Toxicology2013

Plasma and urine dimercaptopropanesulfonate concentrations after dermal application of transdermal DMPS (TD-DMPS).

Jennifer P Cohen, Anne-Michelle Ruha, Steven C Curry, Kallol Biswas, Benjamin Westenberger, Wei Ye, Kathleen L Caldwell, Frank Lovecchio, Keith Burkhart, Nasr Samia

Open access · bronzeAbstract read
In one paragraph

Article in Journal of medical toxicology : official journal of the American College of Medical Toxicology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.7field-weighted citation impact, top 19% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Analytical considerations in the clinical laboratory assessment of metals.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2014
    Article
  6. Introduction to special issue: use and misuse of metal chelation therapy.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2013
    Article
  7. Recommendations for provoked challenge urine testing.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2013
    Article
  8. Commentary on "Transdermal DMPS".Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2013
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 1 country.

Jennifer P CohenDepartment of Medical Toxicology, Banner Good Samaritan Medical Center, Medical Toxicology, Phoenix, AZ 85006, USA.
Anne-Michelle Ruha
Steven C Curry
Kallol Biswas
Benjamin Westenberger
Wei Ye
Kathleen L Caldwell
Frank Lovecchio
Keith Burkhart
Nasr Samia
United States Food and Drug Administration · USGood Samaritan Medical Center · USNational Center for Environmental Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

2,3-Dimercaptopropane-1-sulfonate (DMPS) is a metal chelator approved in Europe for oral or intravenous use for heavy metal poisoning. Transdermally applied DMPS (TD-DMPS) is used by some alternative practitioners to treat autism, despite the absence of evidence for its efficacy. We found no literature evaluating the pharmacokinetics of the transdermal route of delivery or the ability of TD-DMPS to enhance urinary mercury elimination. We hypothesized that TD-DMPS is not absorbed. Eight adult volunteers underwent application of 1.5-3 drops/kg of TD-DMPS. Subjects provided 12-h urine collections the day before and day of application. Subjects underwent blood draws at 0, 30, 60,90, 120, and 240 min after TD-DMPS application. Plasma and urine were assayed for the presence of DMPS. Urine was assayed for any change in urinary mercury excretion after DMPS. One control subject ingested 250 mg of oral DMPS and underwent the same urine and blood collections and analyses. No subject had detectable urine DMPS or increased urine mercury excretion after TD-DMPS. One subject had detectable levels of DMPS in the 30-min plasma sample, suspected to be contamination. All other samples for that subject and the other seven subjects showed no detectable plasma DMPS. The control subject had detectable urine and plasma DMPS levels and increased urine mercury excretion. These results indicate that TD-DMPS is not absorbed. There was no increase in urine mercury excretion after TD-DMPS. Our results argue that TD-DMPS is an ineffective metal chelator.

Indexed as

Administration, CutaneousAdministration, OralAdultChelating AgentsFemaleHumansMaleMercury CompoundsMiddle AgedUnithiolChelating AgentsMercury CompoundsUnithiol

Identifiers

PMID23143832
PMCPMC3576508
OpenAlexW1994931031

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.