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- W748361 abstract "Penicillic acid (PA) is a polyketide mycotoxin produced by several species of Aspergillus and Penicillium. This mycotoxin is toxic in experimental animals and has also been reported to be carcinogenic. The cytotoxicity of penicillic acid was studied in rat albeolar macrophages (AM) in vitro. The effects of penicillic acid on membrane integrity were studied by measuring cell volume changes and /sup 51/Cr release. There was a significant decrease in adenosine triphosphate (ATP) in cell cultures exposed to 1.0 mM penicillic acid for 4 hr. Inhibition of the incorporation of (/sup 3/H)leucine into protein was both dose- and time-dependent and protein synthesis was inhibited significantly after 2 hr exposure to greater than or equal to0.1 mM penicillic acid. RNA synthesis was inhibited to a lesser extent than protein synthesis. There was significant inhibition of phagocytosis after 2 hr exposure at greater than or equal to0.3 mM penicillic acid and the ED/sub 50/ for phagocytosis was 0.09 mM. Thus phagocytosis was more sensitive to the toxic effects of penicillic acid than any other cellular process studied. The data suggest the possibility of a respiratory hazard to agricultural workers exposed to contaminated grain." @default.
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- W748361 date "1985-12-01" @default.
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- W748361 title "Toxicity of penicillic acid for rat alveolar macrophages in vitro. [Aspergillus; Penicillium]" @default.
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