Results 41 to 50 of about 85,586 (228)

Application of Liquid Chromatography Coupled to Mass Spectrometry for Direct Estimation of the Total Levels of Adenosine and Its Catabolites in Human Blood

open access: yesPharmaceuticals
Adenosine is a multifunctional nucleoside with several roles across various levels in organisms. Beyond its intracellular involvement in cellular metabolism, extracellular adenosine potently influences both physiological and pathological processes.
Jakub Šofranko   +8 more
doaj   +1 more source

FLAVIN-HYPOXANTHINE DINUCLEOTIDE

open access: yesTHE JOURNAL OF VITAMINOLOGY, 1957
1. FHD was synthesized from FAD by deamination with nitrous acid and the product was first isolated as barium salt. The yield and purity were, however, unsatisfactory by this method. Therefore, the product was extracted with cresol, followed by transfer in aqueous phase, and by subjecting to column chromatography, FHD was obtained in high purity in ...
openaire   +3 more sources

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch   +13 more
wiley   +1 more source

Regulation of the G2/M Transition in Rodent Oocytes [PDF]

open access: yes, 2010
Regulation of maturation in meiotically competent mammalian oocytes is a complex process involving the carefully coordinated exchange of signals between the somatic and germ cell compartments of the ovarian follicle via paracrine and cell–cell coupling ...
Downs, Stephen
core   +2 more sources

Non-targeted Metabolomics Analysis of the Effects of Arabinogalactan on the Metabolites of Akkermansia muciniphila

open access: yesShipin gongye ke-ji, 2022
Among many plant polysaccharides, arabinogalactan had the best growth-promoting effect on Akkermansia muciniphila (Akk) model strain (DSM 22959). In order to further explore the influence of arabinogalactan on Akk metabolites, arabinogalactan was used as
Xirui FENG   +7 more
doaj   +1 more source

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

open access: yesFEBS Open Bio, EarlyView.
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

Upregulation of inducible NO synthase by exogenous adenosine in vascular smooth muscle cells activated by inflammatory stimuli in experimental diabetes [PDF]

open access: yes, 2016
BACKGROUND: Adenosine has been shown to induce nitric oxide (NO) production via inducible NO synthase (iNOS) activation in vascular smooth muscle cells (VSMCs). Although this is interpreted as a beneficial vasodilating pathway in vaso-occlusive disorders,
Cignarella, Andrea   +4 more
core   +2 more sources

Efficient and Practical Radiosynthesis of Novel [131I]-Xanthine and [131I]-Hypoxanthine

open access: yesAtom Indonesia, 2022
Natural products (NPs) have been the basis for the discovery and development of pharmacologically relevant drug-related molecules, including radiopharmaceuticals.
H. Wongso, W. Nuraeni, E. Rosyidiah
doaj   +1 more source

Hypoxanthine uptake by human erythrocytes [PDF]

open access: yesFEBS Letters, 1979
It is well established that the uptake of hypoxan- thin, by human erythrocytes is mediated by its incorporation into IMP [ 11. The synthesis of this nucleotide is dependent on the intracellular availability of 5phosphoribosyl o-1-pyrophosphate (PRPP) and on the activity of hypoxanthine-guanine phospho- ribosyltransferase (HGPRT) [ 11.
GIACOMELLO, Alessandro   +1 more
openaire   +3 more sources

Response to Allopurinol and Febuxostat According to the Fractional Excretion of Urate in Men With Gout

open access: yesArthritis Care &Research, EarlyView.
Objective Body mass index (BMI), glomerular filtration rate (GFR), and pretreatment urate levels have been reported to influence the urate‐lowering response to allopurinol. We investigated whether the fractional excretion of uric acid (FEUA) also modulates this response and relates to oxypurinol concentrations.
Pascal Richette   +13 more
wiley   +1 more source

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