Results 41 to 50 of about 1,140 (181)

Tetrahydrobiopterin Responsive Hyperphenylalaninemia without Biopterin Deficiency

pteridines, 2000
Hyperphenylalaninemia (HPA) results from a deficiency of the enzyme phenylalanine hydroxylase (PAH) or of its cofactor, tetrahydrobiopterin (BH4). In 1999, Kure et al reported that some patients with PAH deficiency showed lowering of blood Phe levels after BH4 loading (1). We found several patients with HPA whose serum phenylalanine levels decreased at
Shintaku Haruo, Asada Minoru, Sawada Yoshitomo, Yamano Tsunekazu   +3 more
openaire   +2 more sources

Leishmania donovani's protein tyrosine phosphatases interact with DUF21 and respond to environmental magnesium

The FEBS Journal, Volume 293, Issue 6, Page 1754-1770, March 2026.
The Leishmania phosphatase PTP1, and possibly the genetically similar PTP2, interacts with the Leishmania transmembrane protein DUF21. When both ptp1 and ptp2 are knocked out of Leishmania (LdΔPTP1/2), the parasite can no longer survive without magnesium in vitro and has reduced viability in the host macrophage. Conversely, in duf21 knockout (LdΔDUF21),
Kayla Paulini, Hira Khursheed, Wen Wei Zhang, Isabelle Aubry, Greg Matlashewski, Michel L. Tremblay, Patrick Lypaczewski   +6 more
wiley   +1 more source

Metabolomic Analysis of Phytophthora parasitica Growth in the Presence of β‐sitosterol Indicates Adaptive Mechanisms Modulated by Sterols

Journal of Basic Microbiology, Volume 66, Issue 2, February 2026.
ABSTRACT Phytophthora parasitica is a generalist phytopathogenic oomycete that infects a series of crops with great economic interest, including tomato, tobacco, and citrus species. Sterols are essential lipids in eukaryotic organisms, playing a fundamental role in the structure and function of the cell membrane.
Pâmela Ponce Martins, Evandro Silva, Marcus Vinicius Fernandes Prior, João Marcos Martins Ferreira, Marina Erê Pimenta Santos, Flavia Rodrigues Alves Patrício, Taicia Pacheco Fill, Jorge Maurício Costa Mondego   +7 more
wiley   +1 more source

Enhanced Monacolin K Production in Monascus purpureus Via Mutagenesis and Nitrogen Source Optimization

Journal of Basic Microbiology, Volume 66, Issue 2, February 2026.
ABSTRACT Monascus fungi are valued for their production of Monacolin K (MK), a bioactive compound with recognized lipid‐lowering and multifunctional properties. To enhance MK yield in solid‐state fermentation, this study combined atmospheric and room‐temperature plasma (ARTP) mutagenesis with L‐arginine supplementation.
Chen Yang, Yang Yajing, Hong Housheng
wiley   +1 more source

Further Insights Into Anticholinergic Action Informed by Japanese Anticholinergic Risk Scale

Geriatrics &Gerontology International, Volume 26, Issue 1, January 2026.
ABSTRACT The increased anticholinergic burden caused by medications in older adults is one of the adverse drug reactions of particular concern, as it can exacerbate the onset of geriatric syndromes or induce cognitive dysfunction, and is also related to the issue of polypharmacy.
Masaki Mogi, Shuang Liu, Yasuyuki Suzuki, Yuuka Shibata, Shizuo Yamada   +4 more
wiley   +1 more source

Genome‐Wide Protein Interaction Analysis in Parasitic Gyrodactylus Flatworms–Fish Hosts System and Drug Target Identification

Advanced Science, Volume 12, Issue 45, December 4, 2025.
Genomic data offer a powerful tool for studying the molecular interactions between parasites and their hosts, but they remain scarce for parasitic monogenean flatworms. This study presents the first high‐quality phased genome assembly for monogeneans (Gyrodactylus kobayashii), and uses it to predict key interacting proteins between monogenean parasite ‐
Dong Zhang, Jie‐Mei Zhao, Chuan‐Yu Xiang, Yi‐Wen Ma, Hong‐Peng Lei, Yu‐Ying Shi, Shun Zhou, Xiaofei Zeng, Jinsong Chen, Fei Liu, Benhe Zeng, Rui Song, Ye Hu, Feng Zhang, Xiang Liu, Wen‐Xiang Li, Gui‐Tang Wang, Ivan Jakovlić   +17 more
wiley   +1 more source

Neurological aspects of biopterin metabolism. [PDF]

Archives of Disease in Childhood, 1986
Plasma total biopterin concentration was measured by bioassay in 59 infants with hyperphenylalaninaemia and in 50 children with developmental regression and or movement disorder with normal plasma phenylalanine concentrations. In infants with raised phenylalanine concentrations plasma biopterin concentrations were significantly raised in proportion to ...
I, Smith, R J, Leeming, N P, Cavanagh, K, Hyland   +3 more
openaire   +2 more sources

Tetrahydrobiopterin Role in human umbilical vein endothelial dysfunction in maternal supraphysiological hypercholesterolemia [PDF]

, 2016
Maternal physiological hypercholesterolemia (MPH) allows a proper foetal development; however, maternal supraphysiological hypercholesterolemia (MSPH) associates with foetal endothelial dysfunction and early development of atherosclerosis.
Barros, Eric, Fuenzalida, Barbara, Gutierrez, Jaime, Leiva, Andrea, Pardo, Fabian, Salsoso, Rocio, Sobrevia, Luis, Toledo, Fernando   +7 more
core   +1 more source

Consensus Guideline for the Diagnosis and Treatment of Tyrosine Hydroxylase (TH) Deficiency

Journal of Inherited Metabolic Disease, Volume 48, Issue 6, November 2025.
ABSTRACT Tyrosine hydroxylase (TH) catalyses the rate‐limiting step in dopamine biosynthesis. Autosomal recessive tyrosine hydroxylase deficiency (THD) leads to clinical phenotypes reflecting the deficiency of dopamine, norepinephrine, or epinephrine in the central nervous system (CNS), presenting along a continuous spectrum from mild to severe forms ...
Mariya Sigatullina Bondarenko, Oya Kuseyri Hübschmann, Jan Kulhánek, Roser Pons, Toni S. Pearson, Kathrin Jeltsch, Ivana Badnjarevic, Tessa Wassenberg, Gabriella Horvath, Galina Stevanovic, Manju A. Kurian, Elisenda Cortès‐Saladelafont, Agathe Roubertie, Vincenzo Leuzzi, Mariarita Bertoldi, Mario Mastrangelo, Birgit Assmann, THD Guidelines Working Group, Ines Denzler, Clarisa Maxit, Natalia Alexandra Julia‐Palacios, Shekeeb Mohammad, Helly Goez, Wai‐Ian Yeung, Tomáš Honzík, Ivana Kavecan, Alba Tristán‐Noguero, Alberto Burlina, Daniela Gueraldi, Sushil Bandodkar, Willemsen Michel, Francesco Porta, Sheila Wong, Filippo Manti, Reem Alkhater, Chris Mühlhausen, Alice Kuster, Dimitrios Zafeiriou, Paulo Sgobbi, Wladimir Bocca Vieira de Rezende Pinto, Angeles Garcia‐Cazorla, Thomas Opladen   +41 more
wiley   +1 more source

Tetrahydrobiopterin protects against hypertrophic heart disease independent of myocardial nitric oxide synthase coupling [PDF]

, 2016
Nitric oxide synthase uncoupling occurs under conditions of oxidative stress modifying the enzyme's function so it generates superoxide rather than nitric oxide.
Bedja, D, Carnicer, R, Casadei, Barbara, Channon, KM, Duglan, D, Hahn, VS, Hashimoto, T, Kass, DA, Recalde, A, Sivakumaran, V, Zhu, G   +10 more
core   +3 more sources