Results 61 to 70 of about 14,507 (223)

Non‐canonical PKG1 regulation in cardiovascular health and disease

British Journal of Pharmacology, EarlyView.
It is well established that the cyclic GMP‐dependent protein kinase I (PKG1) is canonically activated by cyclic guanosine monophosphate (cGMP), enabling its regulation of vascular tone, cardiac function and smooth muscle homeostasis. However, diverse non‐canonical stimuli of PKG1 have also been identified.
Jie Su, Joseph Robert Burgoyne
wiley   +1 more source

Delineation of the arginine- and tetrahydrobiopterin-binding sites of neuronal nitric oxide synthase.

, 1997
Nitric oxide synthase (EC 1.14.13.39) catalyses the conversion of arginine, NADPH and oxygen to nitric oxide and citrulline, using haem, (6R)-5,6,7,8-tetrahydro-l-biopterin (tetrahydrobiopterin), calmodulin, FAD and FMN as cofactors.
Lowe, PN, Smith, D, Saqi, M, Boyhan, A, Charles, IG   +4 more
core   +1 more source

Re‐thinking peripheral dysfunctions in obesity: The emerging role of sulphaceutics and sulphanutraceutics

British Journal of Pharmacology, EarlyView.
Obesity is a chronic, relapsing, multisystem disease in which cardiometabolic risk arises from excess adiposity and progressive dysfunction of peripheral organs, ultimately disrupting endocrine and metabolic crosstalk among tissues. Within this network, sulphur‐based biology, centred on hydrogen sulphide and related reactive sulphur species, has ...
Martina Smimmo, Veronica Casale, Roberta d'Emmanuele di Villa Bianca, Valentina Vellecco, Mariarosaria Bucci   +4 more
wiley   +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

Suppressive Effect of Tetrahydrobiopterin on L-β-( 3,4-Dihydroxyphenyl) alanine-Induced Cytotoxicity in PC-12 Cells

Pteridines, 1997
We examined the inhibitory effect of tetrahydrobiopterin (BPH4) on L-β-(3,4-dihydroxyphenyl)alanine (DOPA)-induced cytotoxicity in PC-12 cells. First in vitro inhibitory efficacy of BPH4 on lipid peroxidation induced by Fe3+-DOPA complex was confirmed by
Kojima Shuji, Kugenuma Hiroshi, Oyobe Sayaka, lizuka Hiroyuki, Ikekita Masahiko   +4 more
doaj   +1 more source

Astragaloside IV and Ferroptosis Modulation in Pathological Cardiac Hypertrophy: Current Evidence, an Integrative Hypothesis, and Future Directions

Pharmacology Research &Perspectives, Volume 14, Issue 6, December 2026.
ABSTRACT Pathological cardiac hypertrophy is initially an adaptive response to sustained mechanical, neurohormonal, or metabolic stress; however, it can progress to fibrosis, contractile dysfunction, arrhythmia, and heart failure. Ferroptosis is a type of regulated cell death caused by iron‐dependent phospholipid peroxidation.
Pengbo Liu, Yongzhi Deng
wiley   +1 more source

Neointimal Hyperplasia and Restenosis: Epidemiology, Pathophysiology, Animal Models, Clinical Features, Diagnosis, and Management

MedComm, Volume 7, Issue 11, November 2026.
The overall graphical diagram to summarize the pathological characteristics, pathogenesis, clinical manifestation, preclinical animal models, diagnostic methods, and intervention strategies for neointimal hyperplasia. Neointimal hyperplasia results from excessive proliferation and intimal migration of vascular smooth muscle cells (VSMCs) in the ...
Kaixu Wang, Daiyu Zhang, Yu Hu, Yixin Zhao, Xinling Wang, Long Jiang, Meixiu Jiang   +6 more
wiley   +1 more source

Tetrahydrobiopterin in nitric oxide synthase [PDF]

IUBMB Life, 2013
AbstractSummary: Nitric oxide synthase (NOS) is a critical enzyme for the production of the messenger molecule nitric oxide (NO) from L‐arginine. NOS enzymes require tetrahydrobiopterin as a cofactor for NO synthesis. Besides being one of the few enzymes to use this cofactor, the role of tetrahydrobiopterin in NOS catalytic mechanism is different from ...
Jesús, Tejero, Dennis, Stuehr
openaire   +2 more sources

Metabolic Profiling of Circulating and Tumour‐Infiltrating T Cells Uncovers Bioenergetic Checkpoints Linked With Immune and Clinical Skewing in Melanoma Patients

Immunology, Volume 179, Issue 3, Page 486-515, November 2026.
In this study, we revealed the disturbed metabolic status of circulating and tumour‐infiltrating CD4+ and CD8+ T cells in melanoma patients through targeted metabolomic and lipidomic (on sorted subsets) and at single cell level using the SCENITH method.
Hugo Brouque, Kareem Mahdy, Stephane Mouret, Sylvain Henry, Camille Niveau, Mélanie Cettour‐Cave, Martin Pelosse, Florence de Fraipont, Julie Charles, Andrei Turtoi, Philippe Saas, Caroline Aspord   +11 more
wiley   +1 more source

Tetrahydrobiopterin Deficiency in Autism Spectrum Disorder [PDF]

, 2014
Tetrahydrobiopterin is an essential cofactor for critical metabolic pathways, including those involved in the production of monoamine neurotransmitters and nitric oxide.
Frye, MD, PhD, Richard E.
core