Results 71 to 80 of about 14,039 (215)

Developmental and Phenotypic Outcomes in Mild Phenylalanine Hydroxylase Deficiency

American Journal of Medical Genetics Part A, Volume 200, Issue 8, Page 1814-1820, August 2026.
ABSTRACT Benign hyperphenylalaninemia (bHPA) is defined as elevated phenylalanine (Phe) levels remaining ≤ 360 μmol/L (6 mg/dL) and not requiring medical intervention. Individuals with bHPA may demonstrate a rise in their Phe levels > 360 μmol/L, effectively developing a mild PKU phenotype requiring therapy to prevent neurocognitive complications. This
Aaron Williams, Kristian Divin, Lindsay C. Burrage, William J. Craigen, Fernando Scaglia, Claudia Soler‐Alfonso, V. Reid Sutton, Kevin E. Glinton, Ronit Marom   +8 more
wiley   +1 more source

Tetrahydrobiopterin and Endothelial Dysfunction in Cardiovascular Diseases

Pteridines, 2006
Endothelial vasodilator dysfunction is a characteristic feature of patients at risk for coronary atheroscierosis. We have reported that insulin resistance may be a pathogenic factor for endothehal dysfunction through impaired endothelial nitric oxide ...
Shinozaki Kazuya, Kashiwagi Atsunori, Masada Masahiro, Okamura Tomio   +3 more
doaj   +1 more source

Interaction of the Gut Microbiota and the Enteric Nervous System: Implications in Gastrointestinal Disorders Associated With Autism Spectrum Disorder

Autism Research, Volume 19, Issue 8, August 2026.
ABSTRACT Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by impairments in social interaction, restricted interests, and repetitive behaviors. In addition to these core behavioral symptoms, gastrointestinal (GI) disorders are frequently reported, ranging from severe constipation to diarrhea.
Baptiste Ganachaud, María José Mendoza‐León, Justine Marchix, Alonso Fernandez Tello, Catherine Le Berre Scoul, Ma Cecilia Opazo, Michel Neunlist, Claudia A. Riedel, Martial Caillaud, Hélène Boudin   +9 more
wiley   +1 more source

Stimulation of Tetrahydrobiopterin Synthesis by Basic Fibroblast Growth Factor in Vascular Endothelial Cells

Pteridines, 2003
The purpose of this study was to examine whether basic fibroblast growth factor (bFGF) stimulates tetrahydrobiopterin (BH4) synthesis in mouse brain microvascular endothelial cells.
Shimizu Shunichi, Miyasaka Yoshiyuki, Yamamoto Shinichiro, Ishii Masakazu, Kiuchi Yuji   +4 more
doaj   +1 more source

Treatment With Tetrahydrobiopterin Improves White Matter Maturation in a Mouse Model for Prenatal Hypoxia in Congenital Heart Disease

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2019
Background Reduced oxygen delivery in congenital heart disease causes delayed brain maturation and white matter abnormalities in utero. No treatment currently exists. Tetrahydrobiopterin (BH4) is a cofactor for neuronal nitric oxide synthase.
Jennifer Romanowicz, Camille Leonetti, Zaenab Dhari, Ludmila Korotcova, Shruti D. Ramachandra, Nemanja Saric, Paul D. Morton, Shivani Bansal, Amrita Cheema, Vittorio Gallo, Richard A. Jonas, Nobuyuki Ishibashi   +11 more
doaj   +1 more source

Overcoming Radiation Resistance: Ferroptosis Induction to Sensitize Solid Tumors to Radiation Therapy

Cancer Medicine, Volume 15, Issue 8, August 2026.
ABSTRACT Radiation therapy (RT) is a mainstay of treatment for a myriad of cancers, often utilized for tumors that are unable to be resected, as well as an adjunct to surgery and chemotherapy. Unfortunately, many cancers are resistant to RT‐induced damage and subsequent cell death.
Joseph Carmicheal, Caden M. Fritson, Alexandra Seas, Heidi Vieira, Surinder K. Batra   +4 more
wiley   +1 more source

Drug Resistance in Multiple Myeloma: Tumor‐Intrinsic Mechanisms and the Bone Marrow Microenvironment

Cell Biochemistry and Function, Volume 44, Issue 8, August 2026.
ABSTRACT Multiple myeloma (MM) is a malignant plasma cell disorder, and despite substantial improvements in prognosis achieved through chemotherapy, immunotherapy, and autologous stem cell transplantation, most patients ultimately develop relapsed or refractory disease. Drug resistance (DR) is increasingly recognized as a dynamically evolving ecosystem
Yixuan Chen, Wenming Huang, Mingxuan Tang, Xiaotao Wang   +3 more
wiley   +1 more source

Stimulation of human nitric oxide synthase by tetrahydrobiopterin and selective binding of the cofactor [PDF]

, 1992
To check the stimulatory potency of the tetrahydro forms of the two major pteridines occurring in human tissues, neopterin and biopterin, NO synthase was purified 6000-fold from human cerebellum. Tetrahydrobiopterin stimulated the activity up to 4.5-fold
Werner, Ernst R., Bernd Mayer, Ernst R. Werner, Werner-Felmayer, Gabriele, Helmut Wachter, Mayer, Bernd, Burghard Heinzel, Klatt, Peter, Peter Klatt, Edda Ambach, Ambach, Edda, Wachter, Helmut, Gabriele Werner-Felmayer, Heinzel, Burghard   +13 more
core   +1 more source

Early Diagnosis of 6-Pyruvoyl-tetrahydropterin Synthase Deficiency

Pteridines, 1994
6-Pyruvoyl-tetrahydropterin synthase (PTPS) deficiency, which used to be called dihydrobiopterin synthase deficiency, is the most common kind of tetrahydrobiopterin deficiency. Early treatment by administration of tetrahydrobiopterin and neurotransmitter
Shintaku Haruo
doaj   +1 more source

Linoleic acid-induced endothelial activation

Journal of Lipid Research, 2004
Hypertriglyceridemia, an important risk factor of atherosclerosis, is associated with increased circulating free fatty acids. Research to date indicates that linoleic acid (LA), the major fatty acid in the American diet, may be atherogenic by activating ...
Viswanathan Saraswathi, Guoyao Wu, Michal Toborek, Bernhard Hennig   +3 more
doaj   +1 more source