Results 31 to 40 of about 14,039 (215)

Biopterin metabolism and nitric oxide recoupling in cancer

Frontiers in Oncology
Tetrahydrobiopterin is a cofactor necessary for the activity of several enzymes, the most studied of which is nitric oxide synthase. The role of this cofactor-enzyme relationship in vascular biology is well established.
Gene Chatman Clark, Gene Chatman Clark, Alan Lai, Aashri Agarwal, Zheng Liu, Zheng Liu, Xiang-Yang Wang, Xiang-Yang Wang, Xiang-Yang Wang   +8 more
doaj   +1 more source

Tetrahydrobiopterin Regulates L-tyrosine-induced Elevation of Cytosolic Calcium Concentration in Insulin-secreting Cells

Pteridines, 2006
We examined the role of endogenous tetrahydrobiopterin (BH4) on L-tyrosine-induced increase in cytosolic Ca: concentration ([Ca2+],) in the ß-cell line, HIT-T15.
Ishii Masakazu, Shimizu Shunichi, Watabe Tatsuya, Kiuchi Yuji   +3 more
doaj   +1 more source

First insights into structure-function relationships of alkylglycerol monooxygenase

Pteridines, 2013
Alkylglycerol monooxygenase is a tetrahydrobiopterin-dependent enzyme that cleaves the O-alkyl-bond of alkylglycerols. It is an exceptionally unstable, hydrophobic membrane protein which has never been purified in active form.
Watschinger Katrin, Fuchs Julian E., Yarov-Yarovoy Vladimir, Keller Markus A., Golderer Georg, Hermetter Albin, Werner-Felmayer Gabriele, Hulo Nicolas, Werner Ernst R.   +8 more
doaj   +1 more source

Harnessing ferroptosis from multilayer defense networks to nanoplatforms for specific cancer therapy

BMEMat, EarlyView.
Nanomaterials target metabolically‐regulated ferroptosis for cancer therapy. Iron‐based or alternative nanoplatforms integrate ferroptosis with chemotherapy, immunotherapy, or radiotherapy. They enable stimulus‐responsive therapies (photothermal, photodynamic, sonodynamic) activated by near‐infrared, light, or ultrasound, achieving potent synergistic ...
Xinyue Xu, Xuejian Wang, Wenyan Jiang, Wan Hairul Anuar Kamaruddin, Chunyan Fang, Pengfei Zhang   +5 more
wiley   +1 more source

Characterization of the Protective Effect of Tetrahydrobiopterin Against S-Nitroso-N -Acetyl-D ,L-Penicillamine Induced Endothelial Cell Injury

Pteridines, 1999
The purpose of this study was to characterize the protective effect of tetrahydrobiopterin (BH4), one of the cofactors of nitric oxide (NO) synthase, against NO-induced endothelial cell injury. The addition of S-nitroso-N-acetyl-D,L-penicillamine (SNAP),
Ishii Masakazu, Shimizu Shunichi, Momose Kazutaka, Kiuchi Yuji, Yamamoto Toshinori   +4 more
doaj   +1 more source

Inherited metabolic epilepsies–established diseases, new approaches

Epilepsia Open, EarlyView.
Abstract Inherited metabolic epilepsies (IMEs) represent the inherited metabolic disorders (IMDs) in which epilepsy is a prevailing component, often determining other neurodevelopmental outcomes associated with the disorder. The different metabolic pathways affected by individual IMEs are the basis of their rarity and heterogeneity.
Itay Tokatly Latzer, Phillip L. Pearl
wiley   +1 more source

Tetrahydrobiopterin improves endothelial function in human saphenous veins [PDF]

, 2000
Objectives: Diminished production of nitric oxide has been linked to saphenous vein endothelial dysfunction. Tetrahydrobiopterin is an obligate cofactor for the oxidation of L -arginine by nitric oxide synthase in the production of nitric oxide by ...
Todd J. Anderson, Subodh Verma, Teresa M. Kieser, Kieser, Teresa M., Aaron S. Dumont, Lovren, Fina, Maitland, Andrew, Triggle, Christopher R., Andrew Maitland, Kieren J. Mather, Mather, Kieren J., Anderson, Todd J., Christopher R. Triggle, Verma, Subodh, Dumont, Aaron S., Fina Lovren   +15 more
core   +1 more source

Tetrahydrobiopterin deficiency and brain nitric oxide metabolism [PDF]

, 1997
Tetrahydrobiopterin is an essential cofactor for the aromatic amino acid monooxygenase group of enzymes. Inborn errors of tetrahydrobiopterin metabolism result in hyperphenylalaninaemia and impaired catecholamine and serotonin turnover ...
Brand, Michael Peter
core   +1 more source

Fatty aldehyde dehydrogenase, the enzyme downstream of tetrahydrobiopterin-dependent alkylglycerol monooxygenase

Pteridines, 2013
The tetrahydrobiopterin-dependent degradation of ether lipids by alkylglycerol monooxygenase (AGMO) produces fatty aldehydes, which are toxic to cells.
Keller Markus A., Watschinger Katrin, Golderer Georg, Werner-Felmayer Gabriele, Werner Ernst R.   +4 more
doaj   +1 more source

Integrative Approaches in Cardiovascular Disease: The Role of Nutraceuticals in Heart Failure, Atrial Fibrillation, and Related Conditions

Phytotherapy Research, EarlyView.
Schematic representation of the shared pathophysiological mechanisms underlying heart failure (HF) and atrial fibrillation (AF), including inflammation, oxidative stress, endothelial dysfunction, and fibrosis. The figure highlights the clinical and mechanistic convergence of conventional pharmacological therapies and selected nutraceuticals in ...
Laura Beatrice Mattioli, Ivan Corazza, Roberta Budriesi, Luca Camarda, Maria Carelli, Alberto Spadotto, Igor Diemberger   +6 more
wiley   +1 more source