Results 221 to 230 of about 33,429 (298)
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Glucuronidation and the Transport of the Glucuronide Metabolites in LLC-PK1 Cells
Molecular Pharmaceutics, 2005Formation and transport of glucuronide metabolites were studied in LLC-PK1 cells. Glucuronidation of 17beta-estradiol, 1-naphthol, mycophenolic acid, and 4-methylumbelliferone was examined in microsomes prepared from LLC-PK1 cells, human livers, human kidneys, and human intestines.
Jae H, Chang, Leslie Z, Benet
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Current Drug Metabolism, 2011
This review on isomers or acyl glucuronides (iso-glucuronides) updates earlier reviews, and attempts to place in context the advances that have been made, especially over the last 15 years. The essential chemistry behind the intramolecular acyl migration and anomerization reactions of acyl glucuronides has been appreciated for 30 years.
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This review on isomers or acyl glucuronides (iso-glucuronides) updates earlier reviews, and attempts to place in context the advances that have been made, especially over the last 15 years. The essential chemistry behind the intramolecular acyl migration and anomerization reactions of acyl glucuronides has been appreciated for 30 years.
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2021
Glucuronidation catalyzed by uridine 5′-diphospho-glucuronosyltransferase (UGT) is the most common phase II metabolism. The UGTs can severely limit a drug's exposure and generate reactive metabolites, leading to toxicity. This chapter provides a brief overview of the current understanding of the UGT enzyme family, followed by various medicinal ...
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Glucuronidation catalyzed by uridine 5′-diphospho-glucuronosyltransferase (UGT) is the most common phase II metabolism. The UGTs can severely limit a drug's exposure and generate reactive metabolites, leading to toxicity. This chapter provides a brief overview of the current understanding of the UGT enzyme family, followed by various medicinal ...
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Hydrolysis of Morphine Glucuronide
Journal of Forensic Sciences, 1974Abstract In procedures requiring the quantitative analysis for total morphine in body fluids there is a need to liberate the bound drug, and for the hydrolysis of conjugates in urine there are alternative methods of acid or enzyme hydrolysis.
F, Fish, T S, Hayes
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Intermediates for Glucuronide Synthesis: 7-Hydroxycoumarin Glucuronide
Journal of Chemical Research, 1997A convenient synthesis of the important metabolite 7-hydroxycoumarin glucuronide 3 is presented, including a first report of the β-imidate 11β, together with new preparations of the iodosugar 6 and α-imidate 11α: stability data on 11α and 11β are also given, and the importance of carefully controlled hydrolysis in the last step of the preparation of 3 ...
Richard T. Brown +2 more
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On the formation of carbamate glucuronides
Xenobiotica, 1990(1990). On the formation of carbamate glucuronides. Xenobiotica: Vol. 20, No. 1, pp. 133-134.
L P, Delbressine +3 more
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Drug glucuronidation in humans
Pharmacology & Therapeutics, 1991Glucuronidation is a major metabolic pathway for a large number of drugs in humans. Conjugation of drugs and other chemicals with glucuronic acid is catalyzed by the multigene UDP-glucuronosyltransferase family. It is believed that a number (unspecified at present) of glucuronosyltransferase isozymes, which probably differ in terms of substrate ...
J O, Miners, P I, Mackenzie
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Acta Pharmacologica et Toxicologica, 1978
Abstract Uptake studies, using radioactive labelled glucuronides, have demonstrated the ability of 4‐nitrophenyl glucuronide and phenolphthalein glucuronide to enter isolated rat hepatocytes. Of these glucuronides 4‐nitrophenyl glucuronide was distributed in a similar manner to O‐methylglucose, whereas phenolphthalein glucuronide was bound to cellular ...
A, Norling +3 more
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Abstract Uptake studies, using radioactive labelled glucuronides, have demonstrated the ability of 4‐nitrophenyl glucuronide and phenolphthalein glucuronide to enter isolated rat hepatocytes. Of these glucuronides 4‐nitrophenyl glucuronide was distributed in a similar manner to O‐methylglucose, whereas phenolphthalein glucuronide was bound to cellular ...
A, Norling +3 more
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The Effect of Chloroform Inhalation on Hepatic Glucuronidation and De-Glucuronidation Mechanisms
Drug and Chemical Toxicology, 1980The effect of 2, 4, 6 or 8 exposures to chloroform vapour on hepatic glucuronidating (UDPGA transferase) and de-glucuronidating (beta-glucuronidase) levels has been studied in rats. Successive treatments progressively decreased hepatic UDPGA transferase to a minimum of 53% of the control level.
I D, Capel +3 more
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Microsomal Acyl Glucuronidation: Enzyme-Kinetic Studies with Labile Glucuronides
Pharmacology, 2008Because of the labile nature of acyl glucuronides under physiologic conditions, metabolic rates of formation calculated using traditional methods may be confounded by concomitant rates of degradation. True metabolic formation rates may be approximated by stabilization of the metabolic product or by purifying the metabolite and calculating its ...
H, Spahn-Langguth, L Z, Benet
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