Results 101 to 110 of about 156,732 (304)

Pharmacokinetics and pharmacodynamics of intravenous and oral (S)‐ketamine: Investigating metabolite contribution to subjective effects

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Aims Oral administration of (S)‐ketamine for treatment‐resistant depression (TRD), as alternative to the registered intranasal or off‐label intravenous administrations, has high potential. However, it is characterized by an extensive first‐pass metabolism, resulting in low (S)‐ketamine exposure and high levels of active metabolites, including (S ...
Marije E. Otto   +5 more
wiley   +1 more source

Physiologically‐based pharmacokinetic modelling of uridine 5′‐diphosphoglucorosultransferase (UGT) substrate drugs in pregnant women

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Aims While pregnancy‐related changes in phase I enzyme activity are well‐documented, less is known about the impact on phase II enzymes. This study aimed to test the hypothesis that changes in the pharmacokinetics (PK) of uridine 5′‐diphosphoglucuronosyltransferase (UGT) substrates during pregnancy result from altered enzyme expression or activity ...
William Saffaf   +6 more
wiley   +1 more source

Frequent occurrence of nicotinic acetylcholine receptors in GABAergic neurons of the chick visual system

open access: yesBrazilian Journal of Medical and Biological Research, 2001
Double-labeling immunohistochemical methods were used to investigate the occurrence of the alpha8 and alpha5 nicotinic receptor subunits in presumptive GABAergic neurons of the chick nervous system.
A.S. Torrão, L.R.G. Britto
doaj   +1 more source

Cholinergic Modulation of Locomotion and Striatal Dopamine Release Is Mediated by α6α4* Nicotinic Acetylcholine Receptors [PDF]

open access: yes, 2010
Dopamine (DA) release in striatum is governed by firing rates of midbrain DA neurons, striatal cholinergic tone, and nicotinic ACh receptors (nAChRs) on DA presynaptic terminals.
Drenan, Ryan M.   +8 more
core  

Nicotinamide Reverses the Warburg Effect in CHO Cell Culture

open access: yesBiotechnology and Bioengineering, EarlyView.
Abstract The Warburg effect, the preferential conversion of glucose‐derived pyruvat to lactate despite available oxygen, is a key feature of Chinese hamster ovary (CHO) cell culture. Lactate accumulation in recombinant protein‐producing cell culture is an inefficient usage of glucose, as well as being deleterious to cells.
James Morrissey   +7 more
wiley   +1 more source

Dried blood spot analysis in antidoping: Technical challenges, analytical advances, and future perspectives

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Dried blood spot (DBS) analysis enables minimally invasive blood collection with strong analyte stability and simplified logistics, supporting anti‐doping applications beyond traditional matrices. Recent advances address hematocrit, volume variability, and matrix effects while expanding coverage to steroid esters, World Anti‐Doping Agency‐listed ...
Jihyun Yoon   +4 more
wiley   +1 more source

An examination of the putative glucose tolerance factor activity of amino acid and peptide fractions isolated from brewer's yeast : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Chemistry at Massey University [PDF]

open access: yes, 1985
The first report of the possible existance of a glucose tolerance factor (GTF) was made by Mertz and Schwarz (1955) who noticed that a dietary additive, termed factor 3, isolated from an enzymatic casein hydrolysate (Schwarz (1952)), maintained normal ...
Jackson, Timothy Graham
core  

Nicotine and neuronal nicotinic acetylcholine receptors: unraveling the mechanisms of nicotine addiction

open access: yesFrontiers in Neuroscience
Nicotine, recognized as the principal addictive component in tobacco, is mechanistically linked to its interaction with neuronal nicotinic acetylcholine receptors (nAChRs). nAChRs are ligand-gated ion channels composed of five transmembrane subunits, with the α4β2 receptor subtype being the most common in the brain, playing a crucial role in the ...
Jian, Jiang   +7 more
openaire   +2 more sources

Neurovascular coupling in bone regeneration: Mechanisms, advanced biomaterials and challenges

open access: yesBMEMat, EarlyView.
This figure illustrates various material strategies for neurovascularized bone regeneration, including electroactive scaffolds, ion‐loaded materials, drug delivery systems, surface modifications, cells/cell products, growth factors, and peptides. These approaches aim to synergistically promote the regeneration of neural, vascular, and bone tissues ...
Yixin Ma   +8 more
wiley   +1 more source

Variability in ACT Response to Standard UFH Bolus During PCI: A Prospective Study on Determinants of Subtherapeutic Anticoagulation

open access: yesCatheterization and Cardiovascular Interventions, Volume 107, Issue 7, Page 2293-2303, June 1, 2026.
ABSTRACT Background Unfractionated heparin (UFH) remains the standard anticoagulant during percutaneous coronary intervention (PCI), with guidelines recommending a target activated clotting time (ACT) of ≥250 s. However, despite receiving a standardized bolus dose, many patients fail to achieve this target.
Manh Cuong Vu   +9 more
wiley   +1 more source

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