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A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
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Low-level hydrogen sulfide and central nervous system dysfunction.

Kaye H Kilburn1, Jack D Thrasher, Michael R Gray

  • 1Neuro-test Inc., University of Southern California, Keck School of Medicine, Laboratory for Environmental Sciences, Pasadena, CA 91107, USA. khkilburn@sbcglobal.net

Toxicology and Industrial Health
|May 28, 2010
PubMed
Summary
This summary is machine-generated.

Exposure to hydrogen sulfide from industrial sources in Lovington, New Mexico, significantly impaired neurobehavioral functions in adults. Residents showed more abnormalities compared to unexposed individuals, indicating a clear health risk from environmental pollution.

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Area of Science:

  • Environmental Health
  • Neurotoxicology
  • Occupational Health

Background:

  • Southeastern New Mexico's sour gas/oil sector presents multiple hydrogen sulfide (H2S) exposure sources.
  • Industrial H2S emissions from sewage plants, refineries, oil wells, and cheese manufacturing pose potential health risks.
  • Previous studies have linked H2S exposure to various health issues, necessitating neurobehavioral assessments.

Purpose of the Study:

  • To assess neurobehavioral impairment in adults residing in H2S-exposed areas of Lovington, Tatum, and Artesia, New Mexico.
  • To compare neurobehavioral test results of exposed residents with those of unexposed adults in Wickenburg, Arizona.
  • To identify specific cognitive and motor functions affected by chronic, multiple-source H2S exposure.

Main Methods:

  • A cross-sectional study involving 49 adults from Lovington, Tatum, and Artesia, and 42 unexposed controls from Arizona.
  • Participants completed questionnaires on chemical exposures, symptoms, and mood (Profile of Mood States).
  • Neurobehavioral tests measured reaction time, balance, visual fields, hearing, grip strength, memory, problem-solving, and motor skills (e.g., fingertip number writing errors).

Main Results:

  • Lovington residents exhibited significantly more neurobehavioral abnormalities (average 11.8) compared to Tatum-Artesia residents (3.6) and unexposed controls (2.0).
  • Exposed individuals showed significant impairments in simple and choice reaction times, balance, visual fields, hearing, and grip strength.
  • Several cognitive tests, including verbal recall and trail making, also revealed significant differences between exposed and unexposed groups.

Conclusions:

  • Multiple community sources of hydrogen sulfide significantly impaired neurobehavioral functions in Lovington adults.
  • The study highlights the detrimental impact of industrial H2S pollution on neurological health in affected communities.
  • Findings underscore the need for stricter environmental regulations and monitoring of H2S emissions in oil and gas regions.