Results 91 to 100 of about 129,619 (377)

Impact of Subacute Exposure to T-2 Toxin and Zearalenone on the Pharmacokinetics of Midazolam as CYP3A Probe Drug in a Porcine Animal Model: A Pilot Study

open access: yesFrontiers in Pharmacology, 2019
Cytochrome P450 enzymes (CYP) are important catalyzing proteins involved in the biotransformation of endogenous and xenobiotic compounds. However, their expression and/or activity can be altered by exposure to contaminants such as mycotoxins.
Wim Schelstraete   +2 more
doaj   +1 more source

The evolution and structure of biomedical knowledge on cytochrome P450 [PDF]

open access: yesarXiv, 2017
Cytochrome P450 are fundamental proteins to the metabolism of drugs and other relevant processes. through a combination of text mining and network analysis of the P450 literature we mapped the emergence and evolution of the biomedical research communities working on this family of proteins.
arxiv  

Microsomal superoxide anion production and NADPH-oxidation in a series of 22 aziridinylbenzoquinones [PDF]

open access: yes, 1989
Several 2,5-bis(1-aziridinyl)-1,4-benzoquinones (BABQs) can be activated to alkylating species by reduction of the quinone moiety. On the other hand, cytotoxicity of these compounds can be induced by redox cycling.
Koster, Andries Sj.   +3 more
core   +3 more sources

Effects of chronic cirrhosis induced by intraperitoneal thioacetamide injection on the protein content and Michaelis–Menten kinetics of cytochrome P450 enzymes in the rat liver microsomes

open access: yesBasic &Clinical Pharmacology &Toxicology, Volume 132, Issue 2, Page 197-210, February 2023., 2023
Abstract Chronic intraperitoneal injection of thioacetamide (TAA) in rats has been used as an animal model of human cirrhosis to study the effects of the disease on drug metabolism. However, TAA inhibits P450 enzymes directly and independently of cirrhosis. We investigated the effects of chronic cirrhosis in rats, induced by 10 weeks of intraperitoneal
Devaraj Venkatapura Chandrashekar   +3 more
wiley   +1 more source

Synthesis, Screening and Pharmacokinetic Evaluation of Potential Prodrugs of Bupropion. Part One: In Vitro Development

open access: yesPharmaceuticals, 2014
In general, prodrugs are developed to circumvent deficiencies associated with the absorption, distribution, metabolism, excretion or toxicological (ADMET) profile associated with the active drug.
Paul Matthew O'Byrne   +3 more
doaj   +1 more source

Ascorbic acid enhances the inhibitory effect of aspirin on neuronal cyclooxygenase-2-mediated prostaglandin E2 production [PDF]

open access: yesJournal of Neuroimmunology 174(1-2): 39-51 (2006), 2007
In the present study, we show that ascorbic acid dose-dependently inhibited interleukin-1beta (IL-1beta)-mediated PGE2 synthesis in the human neuronal cell line, SK-N-SH. Furthermore, in combination with aspirin, ascorbic acid augmented the inhibitory effect of aspirin on PGE2 synthesis. However, ascorbic acid had no synergistic effect along with other
arxiv  

In vitro metabolism study of ADB‐P‐5Br‐INACA and ADB‐4en‐P‐5Br‐INACA using human hepatocytes, liver microsomes, and in‐house synthesized references

open access: yesDrug Testing and Analysis, EarlyView.
Analyzing hepatocytes and liver microsomes samples along with synthesized references. Complete structure elucidation of major metabolites was possible, and biomarkers for both ADB‐P‐5Br‐INACA and ADB‐4en‐P‐5Br‐INACA were suggested. Abstract Synthetic cannabinoids (SCs) remain a major public health concern, as they continuously are linked to severe ...
Tobias Rautio   +6 more
wiley   +1 more source

Hypothesis review: Alzheimer's overture guidelines

open access: yesBrain Pathology, Volume 33, Issue 1, January 2023., 2023
Brain aging with ADNC and sporadic Alzheimer's disease (sAD) form a prevalent continuum unique to humans. Molecular changes affecting cell membranes, cytoskeleton, synapses, lipid and protein metabolism, energy metabolism, neuroinflammation, cell cycle, astrocytes, microglia, and blood vessels precede and occur in parallel with early ADNC; and they are
Isidro Ferrer
wiley   +1 more source

Identification of Three New N-Demethylated and O-Demethyled Bisbenzylisoquinoline Alkaloid Metabolites of Isoliensinine from Dog Hepatic Microsomes

open access: yesMolecules, 2012
Isoliensinine, a natural phenolic bisbenzyltetrahydroisoquinoline alkaloid, has received considerable attention for its potential biological effects such as antioxidant and anti-HIV activities.
Su Zeng   +3 more
doaj   +1 more source

Identification of human metabolites of fast skeletal troponin activators Tirasemtiv and Reldesemtiv for doping control purposes

open access: yesDrug Testing and Analysis, EarlyView.
The metabolism and urinary elimination of two substances recently classified as prohibited substances in sport was conducted, yielding suitable target analytes for efficient doping controls employing routinely applied chromatographic‐mass spectrometric test methods.
Luisa Euler   +4 more
wiley   +1 more source

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