Results 51 to 60 of about 287,149 (254)

GuanethidineN-oxidation in human liver microsomes

Journal of Pharmacy and Pharmacology, 1987
AbstractThe capacity of human liver microsomes to N-oxidize guanethidine from 25 subjects has been assessed. Guanethidine N-oxidation was optimal at pH 8ṁ5 and proceeded at only 16% of the maximal rate at pH 7ṁ4. The mean rates of guanethidine N-oxidation at pH 8ṁ5 and 7ṁ4 were 2ṁ46 ± 0& ...
M E, McManus, D S, Davies, A R, Boobis, P H, Grantham, P J, Wirth   +4 more
openaire   +2 more sources

Cannabinoids and drug–drug pharmacokinetic interactions: Deciphering the risks

British Journal of Clinical Pharmacology, EarlyView.
The relationship between cannabinoids and mental health has become a major focus of scientific inquiry and public discourse. Cannabinoids are diverse chemical compounds from the Cannabis species that have been explored for their therapeutic applications in treating chronic pain, psychiatric and neurological conditions, such as depression, schizophrenia,
Paraskevi Papakyriakopoulou, Georgia Valsami, Georgios Ismailos   +2 more
wiley   +1 more source

Studies on acyl-coenzyme A: cholesterol acyltransferase activity in human liver microsomes.

Journal of Lipid Research, 1989
The aim of the present study was to characterize the acyl-coenzyme A: cholesterol acyltransferase (ACAT) activity in human liver microsomes. Liver biopsies were obtained from patients undergoing elective cholecystectomy under highly standardized ...
K Einarsson, L Benthin, S Ewerth, G Hellers, D Ståhlberg, B Angelin   +5 more
doaj   +1 more source

Unveiling Hepatic Protein Alterations in Neonatal and Infant Biliary Atresia

Clinical Pharmacology &Therapeutics, EarlyView.
Pediatric populations differ from adults in drug elimination capacity. While current scaling methods account for enzyme and transporter maturation, they overlook comorbidities, such as biliary atresia (BA), a liver disease appearing within the first 2–8 weeks of life that can progress to cirrhosis.
Zubida M. Al‐Majdoub, Martyn Howard, Brahim Achour, Jill Barber, Naved Alizai, Amin Rostami‐Hodjegan   +5 more
wiley   +1 more source

Metabolic Profiling of the Uncaria Hook Alkaloid Geissoschizine Methyl Ether in Rat and Human Liver Microsomes Using High-Performance Liquid Chromatography with Tandem Mass Spectrometry

Molecules, 2015
Geissoschizine methyl ether (GM) is an indole alkaloid found in Uncaria hook, which is a galenical constituent of yokukansan, a traditional Japanese medicine. GM has been identified as the active component responsible for anti-aggressive effects. In this
Hirotaka Kushida, Takashi Matsumoto, Yasushi Igarashi, Hiroaki Nishimura, Junko Watanabe, Kazuya Maemura, Yoshio Kase   +6 more
doaj   +1 more source

Annual Banned‐Substance Review 18th Edition—Analytical Approaches in Human Sports Drug Testing 2024/2025

Drug Testing and Analysis, EarlyView.
New insights into drug metabolism, distribution, elimination, and detection assays for drugs and methods of sports doping published between 2024 and 2025 are critically reviewed and evaluated in context with the Prohibited List 2025 as established by the World Anti‐Doping Agency.
Mario Thevis, Tiia Kuuranne, Hans Geyer
wiley   +1 more source

Contributions of UDP-Glucuronosyltransferases to Human Hepatic and Intestinal Metabolism of Ticagrelor and Inhibition of UGTs and Cytochrome P450 Enzymes by Ticagrelor and its Glucuronidated Metabolite

Frontiers in Pharmacology, 2021
Ticagrelor is the first reversibly binding, direct-acting, oral P2Y12 receptor inhibitor. The contribution of UDP-glucuronosyltransferases (UGTs) enzymes to the metabolism of ticagrelor to its glucuronide conjugation, ticagrelor-O-glucuronide, in human ...
Shuaibing Liu, Lei Hou, Cai Li, Yibo Zhao, Xia Yao, Xiaojian Zhang, Xin Tian   +6 more
doaj   +1 more source

Bioactivation and Metabolism of Amino Acid MDMA Prodrugs in Zebrafish Embryos, Human Liver S9, Whole Blood, and Microdosed Human Urine

Drug Testing and Analysis, EarlyView.
Bioactivation and metabolism of MDMA prodrugs: MDMA‐Trp, MDMA‐Lys, MDMA‐Gly showed unique urine screening targets only for MDMA‐Trp, while biomarkers for MDMA‐Lys and MDMA‐Gly consisted of MDMA and known MDMA metabolites. Conversion of amino acid prodrugs to MDMA in pHLS9, zebrafish embryos, and humans. ABSTRACT 3,4‐Methylenedioxymethamphetamine (MDMA)
Simon K. Wellenberg, Lea Wagmann, Matthias D. Kroesen, Philip Schippers, Matthias Grill, Jennifer Herrmann, Markus R. Meyer   +6 more
wiley   +1 more source

Oxidative desaturation of α-linolenic, linoleic, and stearic acids by human liver microsomes

Lipids, 1975
The desaturation of stearic, linoleic, and α-linolenic acids by human liver microsomes were studied. The microsomes were isolated from liver biopsies obtained during operations.
I. N. G. Gómez Dumm, R. R. Brenner
semanticscholar   +1 more source

Computer‐Aided Functional Oligosaccharide Screening and the Regulatory Role in Lipid Metabolism

Food Bioengineering, EarlyView.
ABSTRACT This study investigated the lipid‐lowering effects and intervention mechanisms of structurally diverse functional oligosaccharides on non‐alcoholic fatty liver disease (NAFLD). By integrating computational tools such as molecular docking and molecular dynamics simulations (MDS), a comprehensive “in silico‐in vitro‐in vivo” tri‐dimensional ...
Rui Jing, Shanshan Deng, Mengyao Zhao, Liming Zhao   +3 more
wiley   +1 more source