Results 81 to 90 of about 55,635 (283)

NAMPT and NAPRT, Key Enzymes in NAD Salvage Synthesis Pathway, Are of Negative Prognostic Value in Colorectal Cancer

open access: yesFrontiers in Oncology, 2019
Nicotinamide adenine dinucleotide (NAD) is a profoundly important cofactor in redox reactions. Nicotinamide phosphoribosyltransferase (NAMPT) and nicotinate phosphoribosyltransferase (NAPRT) are key enzymes for NAD salvage biosynthesis pathway, which ...
Xiao-qin Li   +7 more
doaj   +1 more source

Identification of Melatonin-Regulated Genes in the Ovine Pituitary Pars Tuberalis, a Target Site for Seasonal Hormone Control [PDF]

open access: yes, 2008
The pars tuberalis (PT) of the pituitary gland expresses a high density of melatonin (MEL) receptors and is believed to regulate seasonal physiology by decoding changes in nocturnal melatonin secretion.
Alison Downing   +83 more
core   +2 more sources

Synergistic RU486 and olaparib therapy enhances apoptosis in endometriosis by simultaneously targeting hormonal signalling and DNA repair

open access: yesBritish Journal of Pharmacology, Volume 183, Issue 11, Page 2947-2968, June 2026.
Background and Purpose Endometriosis is a chronic, hormone‐dependent disorder characterized by ectopic implantation of endometrial tissue, often accompanied by pain and infertility. Although the progesterone receptor modulator RU486 is effective for pain relief, its impact on lesion regression is limited, possibly due to apoptosis resistance and ...
Yujie Peng   +10 more
wiley   +1 more source

Genome‐Guided Discovery of Antimalarial 4‐Amino‐2,4‐Pentadienoate‐Containing Cyclolipodepsipeptides

open access: yesAngewandte Chemie, Volume 138, Issue 18, 27 April 2026.
Halogenated and glycosylated 4‐amino‐2,4‐pentadienoate‐containing cyclolipodepsipeptides (APD‐CLDs) exhibit potent antiplasmodial activity (IC50 = 25–161 nM) against drug‐sensitive and resistant Plasmodium falciparum strains. ABSTRACT 4‐Amino‐2,4‐pentadienoate‐containing cyclolipodepsipeptides (APD‐CLDs) represent a structurally distinctive family of ...
Hartono Candra   +10 more
wiley   +2 more sources

Atrial Natriuretic Peptide, a Regulator of Nuclear Factor-κB Activation in Vivo [PDF]

open access: yes, 2007
Natriuretic peptides (NPs) comprise a family of vasoactive hormones that play important roles in the regulation of cardiovascular and renal homeostasis.
Keller, Melanie   +6 more
core   +1 more source

Quantification of SARM1 NADase Activity in Human Peripheral Blood Mononuclear Cells

open access: yesThe FASEB Journal, Volume 40, Issue 9, 15 May 2026.
Proposed model for NAD+ metabolism in (A) control and (B) SARM1 activated PBMCs. In native form, 3‐AP and Vacor compete with NAM as an alternative substrate for NAMPT. This consequently decreases generation of NMN and biosynthesis of NAD+ is limited by both a reduction in precursor NMN and direct inhibition of NMNAT by Vacor‐MN and 3‐AP‐MN.
Lila F. Dabill   +5 more
wiley   +1 more source

Vitamin D and calcium metabolism in horses in New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Veterinary Science at Institute of Veterinary, Animal and Biomedical Sciences (IVABS), Massey University, Manawatū, New Zealand [PDF]

open access: yes, 2016
The physiology of vitamin D in horses has not been studied in great depth. Few studies on vitamin D metabolites (25OHD2, 25OHD3, and 1,25(OH)2D) and their relationship to other serum analytes exist. In addition, some studies suggest that equine vitamin D
Azarpeykan, Sara
core  

Feeding Stimulates Sphingosine-1-Phosphate Mobilization in Mouse Hypothalamus. [PDF]

open access: yes, 2019
Previous studies have shown that the sphingolipid-derived mediator sphingosine-1-phosphate (S1P) reduces food intake by activating G protein-coupled S1P receptor-1 (S1PR1) in the hypothalamus.
Misto, Alessandra   +3 more
core   +1 more source

Targeting TNBC: core–shell polycationic polyurea dendrimers with inherent anticancer activity

open access: yesFEBS Open Bio, Volume 16, Issue 5, Page 944-965, May 2026.
Core–shell polycationic PURE dendrimers were tested in TNBC‐derived tumor models. Both formulations selectively targeted TNBC and effectively reduced tumor volume. PUREG4‐OEI48 suppressed tumor growth without detectable toxicity, whereas PUREG4‐OCEI24, despite showing efficacy, induced hepatic toxicity.
Adriana Cruz   +9 more
wiley   +1 more source

Crystal Structure of Anthranilate Phosphoribosyltransferase from Methanocaldococcus jannaschii

open access: yesCrystals
Tryptophan is synthesized in microorganisms via a five-step enzymatic pathway originating from chorismate, which is a product of the shikimate pathway.
Jung-Min Choi
doaj   +1 more source

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