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THE INACTIVATING EFFECT OF SULFAPYRIDINE ON THE LEUKOTOXIC ACTION OF BENZENE
1Department of Medicine, New York University College of Medicine, New York.
Sulfapyridine administration prevented benzene-induced leukopenia in rabbits by protecting bone marrow. Para-aminobenzoic acid did not offer this protective effect against benzene toxicity.
Area of Science:
- Toxicology
- Hematology
Background:
- Benzene exposure is known to cause leukopenia, a decrease in white blood cells.
- Understanding protective mechanisms against benzene toxicity is crucial for occupational health.
Purpose of the Study:
- To investigate the potential protective effect of sulfapyridine against benzene-induced leukopenia in rabbits.
- To evaluate the efficacy of para-aminobenzoic acid in mitigating benzene's leukotoxic effects.
Main Methods:
- Rabbits were administered subcutaneous benzene injections.
- Simultaneous oral administration of sulfapyridine or para-aminobenzoic acid was performed.
- Leukocyte counts and bone marrow morphology were analyzed.
- Phenol excretion in urine was measured.
Main Results:
- Sulfapyridine administration significantly prevented benzene-induced leukopenia, evidenced by leukocyte counts and bone marrow examination.
- Para-aminobenzoic acid failed to inhibit the leukotoxic action of benzene.
- Sulfapyridine alone caused minor leukocyte variations but not persistent leukocytosis.
- Rabbits treated with benzene and sulfapyridine showed altered phenol excretion patterns compared to benzene-only treated animals.
Conclusions:
- Sulfapyridine exhibits a protective effect against benzene-induced leukopenia in rabbits.
- The mechanism of sulfapyridine's protection may involve altering benzene metabolism or its effect on leukopoietic tissue.
- Para-aminobenzoic acid is ineffective in preventing benzene-induced leukopenia.
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