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Published on: July 17, 2020
Diazinon and porphyria cutanea tarda
The Medical Journal of Australia
|April 21, 1979
Summary
Topical diazinon exposure in rats induced a condition mimicking porphyria cutanea tarda. This involved elevated fecal porphyrins, including isocoproporphyrin, suggesting skin absorption impacts porphyrin metabolism.
Area of Science:
- Toxicology
- Biochemistry
- Dermatology
Background:
- Porphyria cutanea tarda (PCT) is a metabolic disorder affecting porphyrin production.
- Environmental toxins can influence porphyrin metabolism and lead to dermatological conditions.
Purpose of the Study:
- To investigate the effects of cutaneous diazinon exposure on porphyrin metabolism in rats.
- To determine if topical diazinon application can induce a state similar to porphyria cutanea tarda.
Main Methods:
- Rats were subjected to cutaneous application of diazinon for 12 weeks.
- Faecal porphyrin levels were analyzed.
- Biochemical analysis was performed to compare the induced condition with porphyria cutanea tarda.
Main Results:
- Cutaneous diazinon application resulted in a condition biochemically indistinguishable from porphyria cutanea tarda.
- Elevated faecal porphyrin levels were observed.
- Isocoproporphyrin was identified in the faeces of exposed rats.
- Oral administration of diazinon did not affect porphyrin metabolism.
Conclusions:
- Topical exposure to diazinon can induce biochemical changes consistent with porphyria cutanea tarda in rats.
- The route of administration is critical, as oral diazinon did not impact porphyrin metabolism.
- These findings highlight the potential dermatological and metabolic risks associated with skin contact with diazinon.
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