Results 41 to 50 of about 99,858 (332)

An Open-label Randomized Crossover Study with Adaptive Design of the Pharmacokinetics and Bioequivalence of GP30121 and Ceraxon® Corrected for Endogenous Analyte Level

open access: yesРазработка и регистрация лекарственных средств, 2023
Introduction. Citicoline is an endogenous nucleoside consisting of cytidine and choline linked by a diphosphate bridge that is involved in the synthesis of membrane phospholipids.
A. N. Arevefa   +8 more
doaj   +1 more source

Effect of uridine protecting groups on the diastereoselectivity of uridine-derived aldehyde 5’-alkynylation

open access: yesBeilstein Journal of Organic Chemistry, 2017
The 5’-alkynylation of uridine-derived aldehydes is described. The addition of alkynyl Grignard reagents on the carbonyl group is significantly influenced by the 2’,3’-di-O-protecting groups (R1): O-alkyl groups led to modest diastereoselectivities (65 ...
Raja Ben Othman   +4 more
doaj   +1 more source

Synthesis and Preliminary Biological Evaluations of 5′-Substituted Derivatives of Uridine as Glycosyltransferase Inhibitors

open access: yesMolecules, 2013
New derivatives of uridine which contain a b-ketoenol motif were synthesized, characterized and biologically tested. Synthesized compounds 1–4 showed no activity against bovine milk β-1,4-galactosyltransferase I at concentrations up to 2.0 mM and were ...
Ilona Wandzik   +5 more
doaj   +1 more source

Unexpected Seven-Membered Ring Formation for Muraymycin-Type Nucleoside-Peptide Antibiotics

open access: yesMolbank, 2020
Naturally occurring nucleoside-peptide antibiotics such as muraymycins or caprazamycins are of major interest for the development of novel antibacterial agents.
Kristin Leyerer   +2 more
doaj   +1 more source

Low Turnover of Soil Bacterial rRNA at Low Temperatures

open access: yesFrontiers in Microbiology, 2020
Ribosomal RNA (rRNA) is used widely to investigate potentially active microorganisms in environmental samples, including soil microorganisms and other microbial communities that are subjected to pronounced seasonal variation in temperature. This raises a
Morten Dencker Schostag   +8 more
doaj   +1 more source

From Formamide to RNA, the Path Is Tenuous but Continuous

open access: yesLife, 2015
Reactions of formamide (NH2COH) in the presence of catalysts of both terrestrial and meteoritic origin yield, in plausible and variegated conditions, a large panel of precursors of (pre)genetic and (pre)metabolic interest. Formamide chemistry potentially
Samanta Pino   +4 more
doaj   +1 more source

Abiotic production of sugar phosphates and uridine ribonucleoside in aqueous microdroplets

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2017
Significance Phosphorylation is essential for life. Phosphorylated molecules play diverse functions in cells, including metabolic (e.g., sugar phosphates), structural (e.g., phospholipids), and instructional (e.g., RNA and DNA).
Inho Nam, Jae Kyoo Lee, H. Nam, R. Zare
semanticscholar   +1 more source

mRNA Expression and Activity of Nucleoside Transporters in Human Hepatoma HepaRG Cells

open access: yesPharmaceutics, 2018
The HepaRG cell line is a highly differentiated human hepatoma cell line, displaying the expression of various drug transporters. However, functional expression of nucleoside transporters remains poorly characterized in HepaRG cells, although these ...
Abdullah Mayati   +6 more
doaj   +1 more source

BCL-2 family protein BOK is a positive regulator of uridine metabolism in mammals

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance It is believed that the Bcl-2 family protein Bok has a redundant role similar to Bax and Bak in regulating apoptosis. We report that this protein interacts with the key enzyme involved in uridine biosynthesis, uridine monophosphate ...
Rahul Srivastava   +24 more
semanticscholar   +1 more source

Case Report: Rapid Treatment of Uridine-Responsive Epileptic Encephalopathy Caused by CAD Deficiency

open access: yesFrontiers in Pharmacology, 2020
We present two unrelated Chinese patients with CAD deficiency manifesting with a triad of infantile-onset psychomotor developmental delay with regression, drug-refractory epilepsy, and anaemia with anisopoikilocytosis.
Ling Zhou   +10 more
doaj   +1 more source

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