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One example is the N-glucuronidation of an aromatic amine, 4-aminobiphenyl, by UGT1A4 or UGT1A9 from human, rat, or mouse liver. [ 2 ] The substances resulting from glucuronidation are known as glucuronides (or glucuronosides) and are typically much more water - soluble than the non-glucuronic acid-containing substances from which they were ...
After phase II reactions, the xenobiotic conjugates may be further metabolised. A common example is the processing of glutathione conjugates to acetylcysteine (mercapturic acid) conjugates. [7] Here, the γ-glutamate and glycine residues in the glutathione molecule are removed by Gamma-glutamyl transpeptidase and dipeptidases.
Arguably the most important of the Phase II (conjugative) enzymes, UGTs have been the subject of increasing scientific inquiry since the mid-to-late 1990s. The reaction catalyzed by the UGT enzyme involves the addition of a glucuronic acid moiety to xenobiotics and is the most important pathway for the human body's elimination of the most ...
Denise Austin, 67, shared a “fit over 50” workout for “boosting” the “metabolism.” The fitness star demonstrated two “simple” yet “effective moves.” Austin says these moves ...
It reduces glutathione via glutathione reductase, which converts reactive H 2 O 2 into H 2 O by glutathione peroxidase. If absent, the H 2 O 2 would be converted to hydroxyl free radicals by Fenton chemistry, which can attack the cell. Erythrocytes, for example, generate a large amount of NADPH through the pentose phosphate pathway to use in ...
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There are two phases of the insulin secretion, the first phase involves the L-type Ca 2+ channels and the second phase involves the R-type Ca 2+ channels. The Ca 2+ influx generated by R-type Ca 2+ channels is not enough to cause insulin exocytosis, however, it increases the mobilization of the vesicles towards the cell membrane. [4]
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