Aminopyrine N-Demethylase

Publication Title: 
The Journal of Pharmacology and Experimental Therapeutics

The effect of methaqualone on the induction of hepatic enzymes was evaluated in rats and compared with that of phenobarbital by measuring effects on hexobarbital and methaqualone hypnosis, plasma and tissue levels of methaqualone, hepatic aniline hydroxylase and aminopyrine demethylase activity and warfarin-induced hypoprothrombinemia. Maximal reductions in hexobarbital hypnosis occurred 3 days after daily administration of 60 mg of methaqualone per kg per day.

Author(s): 
Mathur, P. P.
Smyth, R. D.
Herczeg, T.
Reavey-Cantwell, N. H.
Publication Title: 
General Pharmacology

1. Pretreatment with a Cannabis constituent, cannabichromene (CBC), i.p., had no effect on in vitro hepatic microsomal enzyme activity compared to a known inhibitor of these systems, SKF 525-A. 2. The results indicate that the previously reported CBC potentiation of CNS depressant-induced hypnosis is not mediated by the hepatic microsomal enzyme system.

Author(s): 
Kapeghian, J. C.
Jones, A. B.
Murphy, J. C.
Elsohly, M. A.
Turner, C. E.
Publication Title: 
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi = Chinese Journal of Parasitology & Parasitic Diseases

In this paper, the effect of Schistosoma japonicum infection on liver drug-metabolizing enzymes of mice was studied. The prolongation of hypnosis duration of sodium pentobarbital in vivo and the inhibition of liver aniline hydroxylase (AH), aminopyrine N-demethylase (APD) as well as cytochrome P-450 (Cyt P-450) in vitro were observed in mice infected with 20, 40 and 60 cercariae of S. japonicum after 6 weeks.

Author(s): 
Wang, J.
Qiu, Z. Y.
Xie, W.
Wu, Y. Y.
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