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The effect of alcoholic cirrhosis on the activities of microsomal aldrin epoxidase, 7‐ethoxycoumarin O‐de‐ethylase and epoxide hydrolase, and on the concentrations of reduced glutathione in human liver.
Author(s) -
Woodhouse KW,
Williams FM,
Mutch E,
Wright P,
James OF,
Rawlins MD
Publication year - 1983
Publication title -
british journal of clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.216
H-Index - 146
eISSN - 1365-2125
pISSN - 0306-5251
DOI - 10.1111/j.1365-2125.1983.tb01547.x
Subject(s) - microsome , chemistry , epoxide hydrolase , glutathione , microsoma , microsomal epoxide hydrolase , cirrhosis , medicine , endocrinology , alcoholic liver disease , carbon tetrachloride , biochemistry , enzyme , organic chemistry
Activities of the microsomal mono‐oxygenases 7‐ethoxycoumarin O‐de‐ ethylase (EOC) and aldrin epoxidase (AE), together with microsomal epoxide hydrolase (EH) activity and concentrations of reduced glutathione (GSH) have been measured in liver from patients with alcoholic cirrhosis and in normals. Activities of both mono‐oxygenases were significantly reduced in alcoholic cirrhosis. EOC activity (pmol 7‐ OH coumarin formed/mg microsomal protein/min) was 108.0 +/‐ 10.6 (n = 8) in normals and 60.9 +/‐ 11.6 (n = 8) in alcoholic cirrhosis (P less than 0.01). AE activity (pmol dieldrin formed/mg microsomal protein/min) was 58.9 +/‐ 9.5 (n = 11) in normal liver biopsies and 29.9 +/‐ 8.6 (n = 9) in alcoholic cirrhosis (P less than 0.05). Microsomal EH activity (nmol styrene glycol formed/mg microsomal protein/min) was similar in normals (39.2 +/‐ 4.4, n = 11) and alcoholic cirrhosis (40.5 +/‐ 9.1, n = 6). GSH concentrations (microgram GSH/g liver tissue) were lower (P less than 0.01) in alcoholic cirrhosis (792 +/‐ 73, n = 10) compared to normals (1182 +/‐ 76, n = 6).