Results 11 to 20 of about 1,785 (203)

A Single‐Center Retrospective Cohort Study of Biopterin Metabolism Disorders in the United Arab Emirates

open access: goldJIMD Reports, Volume 66, Issue 1, January 2025.
ABSTRACT Background Tetrahydrobiopterin (BH4) deficiencies comprise a group of five neurometabolic disorders caused by five genetic defects responsible for BH4 biosynthesis and regeneration. Their global prevalence remains unknown, and variance exists among different countries.
Omar Jarrah   +2 more
openalex   +2 more sources

Guide RNA structure design enables combinatorial CRISPRa programs for biosynthetic profiling. [PDF]

open access: yesNat Commun
Engineering metabolism to efficiently produce chemicals from multi-step pathways requires optimizing multi-gene expression programs to achieve enzyme balance.
Fontana J   +10 more
europepmc   +3 more sources

Existence of biopterins and biopterin synthesizing enzymes in human osteoblast and osteosarcoma cells

open access: diamondJapanese Journal of Pharmacology, 1998
Ayami Kondo   +3 more
openalex   +2 more sources

Studies on the regulation of endothelial nitric oxide synthase in endothelial dysfunction [PDF]

open access: yes, 2016
Ischaemic heart disease and cerebrovascular disease are the leading causes of morbidity and mortality in the world. The underlying progression of the disease is linked to a reduction in the bioavailability of nitric oxide. One factor contributing to this
Cerrato, Ruha
core   +1 more source

Insulin Reverses D-Glucose–Increased Nitric Oxide and Reactive Oxygen Species Generation in Human Umbilical Vein Endothelial Cells [PDF]

open access: yes, 2015
Vascular tone is controlled by the L-arginine/nitric oxide (NO) pathway, and NO bioavailability is strongly affected by hyperglycaemia-induced oxidative stress.
Aguayo, Claudio   +7 more
core   +1 more source

Mapping an atlas of tissue-specific drosophila melanogaster metabolomes by high resolution mass spectrometry [PDF]

open access: yes, 2013
Metabolomics can provide exciting insights into organismal function, but most work on simple models has focussed on the whole organism metabolome, so missing the contributions of individual tissues.
A Kamleh   +47 more
core   +3 more sources

First Synthesis of Asperopterin A, an Isoxanthopterin Glycoside from Aspergillus Oryzae [PDF]

open access: yes, 2013
The key precursor, N-2-(N,N -dimethylaminomethylene)-6-hydroxymethyl-8-methyl-3-[2-(4-nitrophenyl)ethyl]-7-xanthopterin (16) was efficiently prepared from 2,5-diamino-6-methylamino-3H-pyrimidin-4-one (5) and ethyl 3-(tert-butyldimethylsilyloxy)-2 ...
Hanaya, Tadashi, Yamamoto, Hiroshi
core   +1 more source

The Influence of 2,4-Diamino-6-Hydroxypyrimidine and Food Restriction on Tetrahydrobiopterin Metabolism, Neurotransmitters and Behaviour in the Rat

open access: yesPteridines, 1991
Administration of 2,4-diamino-6-hydroxypyrimidine (DAHP) in the diet of rats reduced total biopterins in plasma, brain and liver. The levels of dihydropteridine reductase (DHPR) and the rate of biopterin biosynthesis were unaffected.
Cox J., Armstrong R. A., Blair J. A.
doaj   +1 more source

Biopterin responsive phenylalanine hydroxylase deficiency [PDF]

open access: yesGenetics in Medicine, 2004
Phenylketonuria (PKU) is an autosomal recessive disorder caused by mutations in the phenylalanine hydroxylase (PAH) gene. There have been more than 400 mutations identified in the PAH gene leading to variable degrees of deficiency in PAH activity, and consequently a wide spectrum of clinical severity.
Reuben, Matalon   +11 more
openaire   +2 more sources

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