TY - JOUR PY - 1979// TI - Liver injury by the false morel poison gyromitrin JO - Toxicology A1 - Braun, R. A1 - Greeff, U. A1 - Netter, K. J. SP - 155 EP - 163 VL - 12 IS - 2 N2 - After oral application of the mushroom poison gyromitrin a time and dose dependent decrease of cytochrome P-450 was found in rat liver microsomes. The maximal decrease to about 50-60% of the control (after 200 mg/kg, 80% of LD50) was observed 8-12h after application, a normalization after 48 h. The inhibition of cytochrome P-450 mediated metabolism of aminopyrine and p-nitroanisole corresponds to the decrease of cytochrome P-450. The specific activity of cytochrome P-450 remains unchanged while that of cytochrome P-448 is decreased as shown by means of the metabolism of ethoxycoumarin or ethoxyresorufin. Comparable results were obtained after application of N-methyl-N-formylhydrazine (MFH) which is formed from gyromitrin rapidly by hydrolysis. An attack on the endoplasmatic membrane with a stimulation of lipid peroxidation is discussed.

Language: en

LA - en SN - 0300-483X UR - http://dx.doi.org/ ID - ref1 ER -