Results 61 to 70 of about 6,561 (161)

THE EFFECT OF SINGLE-NUCLEOTIDE POLYMORPHISMS IN THE GENES ENCODING METHYLENETETRAHYDROFOLATE REDUCTASE, METHIONINE SYNTHASE, BETAINE-HOMOCYSTEINE S-METHYLTRANSFERASE, AND CYSTATHIONINE BETA-SYNTHASE ON HOMOCYSTEINE LEVELS AND THE RISK OF ISCHEMIC STROKE

Медична наука України
Aim: to analyze the impact of single nucleotide polymorphisms in the genes encoding methylenetetrahydrofolate reductase, methionine synthase, betaine-homocysteine S-methyltransferase, and cystathionine beta-synthase on homocysteine levels and stroke risk
I.G. Strokina, N.V. Motorna
doaj   +1 more source

Strain‐Specific Biotransformation of Grape Marc by Lactic Acid Bacteria: Genomic Validation and Gut Microbiota Modulation

Food Frontiers, Volume 7, Issue 4, July 2026.
ABSTRACT Grape marc (GM) is a polyphenol‐rich winery byproduct that remains underutilized due to its complex fiber matrix, which limits the bioaccessibility of bound phenolics. While lactic acid fermentation (LAF) can enhance the release of these compounds, the strain‐specific metabolic fate of GM phenolics during digestion and colonic fermentation ...
Ziyao Liu, Hanjing Wu, Brendan Holland, Colin J. Barrow, Hafiz A. R. Suleria   +4 more
wiley   +1 more source

First Revision of the Guidelines for the Diagnosis and Management of Remethylation Disorders

Journal of Inherited Metabolic Disease, Volume 49, Issue 4, July 2026.
ABSTRACT This guideline summarizes diagnostic and therapeutic approaches based on a systematic literature review and evidence evaluation using the GRADE methodology. Given the limited high‐quality data, expert consensus was additionally obtained through a modified Delphi process.
Giorgia Olivieri, Andrea Bordugo, Birute Burnyte, Alessandro Costetti, Maria‐Luz Couce, Luisa Diogo, Francois Feillet, D. Sean Froese, Benedetta Greco, Jean‐Louis Gueant, Luciana Hannibal, Friederike Hörster, Viktor Kožich, Giancarlo La Marca, Irini Manoli, Fanny Mochel, Lorenzo Orazi, Belén Pérez, Manuel Schiff, Bernd C. Schwahn, Ida Schwartz, Karolina M. Stepien, Jolanta Sykut‐Cegielska, Trine Tangeraas, Rolf H. Zetterström, Carlo Dionisi‐Vici, Martina Huemer   +26 more
wiley   +1 more source

Structural basis for a filamentous morpheein model of human cystathionine beta-synthase

Nature Communications
Human cystathionine beta-synthase (CBS) is a vital enzyme that regulates sulfur amino acid metabolism, hydrogen sulfide production, and cellular redox balance.
Inayathulla Mohammed, Ela Mijatovic, Thilo Magnus Philipp, Lucia Janickova, Kelly Ascencao, Francisco J. Asturias, Luis Alfonso Martinez-Cruz, Csaba Szabo, Henning Stahlberg, Tomas Majtan   +9 more
doaj   +1 more source

Vitamin‐Responsive Disorders: From Molecular Basis to Clinical Presentation and Therapy

Journal of Inherited Metabolic Disease, Volume 49, Issue 4, July 2026.
ABSTRACT Vitamin‐dependent cofactors are essential for numerous metabolic reactions, and defects affecting their uptake, conversion, utilisation, or regeneration constitute a heterogeneous group of inherited metabolic disorders (IMDs). Although dietary vitamin intake is sufficient to sustain coenzyme synthesis in healthy individuals, it is insufficient
Cécile Acquaviva, Yann Nadjar, Manuel Schiff, Christine Vianey‐Saban, Alain Fouilhoux, Jean‐François Benoist   +5 more
wiley   +1 more source

Methionine Synthase Interacts With the Methionine Adenosyl‐Transferase MATα2 and the DNA Methyltransferase DNMT3b in the Nucleus

Journal of Inherited Metabolic Disease, Volume 49, Issue 4, July 2026.
This study shows that methionine synthase (MS) interacts with MATα2, responsible for SAM production, and the methyltransferase DNMT3b in the nucleus. These results support the idea that spatial compartmentalization of one‐carbon metabolism could play a major role in regulating the epigenome.
Manon Jeandel, Jean‐Marc Alberto, Okan Baspinar, Aurélie Robert, Natacha Dreumont, Zeinab Alsahly, David Meyre, Jean‐Louis Guéant, David Coelho   +8 more
wiley   +1 more source

Cystathionine beta synthase modulates senescence of human endothelial cells

Aging, 2012
Availability of methionine is known to modulate the rate of aging in model organisms, best illustrated by the observation that dietary methionine restriction extends the lifespan of rodents. However, the underlying mechanisms are incompletely understood.
Albertini, Eva, Koziel, Rafal, Dürr, Angela, Neuhaus, Michael, Jansen-Dürr, Pidder   +4 more
openaire   +3 more sources

Inactivation of cystathionine β-synthase with peroxynitrite [PDF]

Archives of Biochemistry and Biophysics, 2009
Cystathionine beta-synthase (CBS) is a homocysteine metabolizing enzyme that contains pyridoxal phosphate (PLP) and a six-coordinate heme cofactor of unknown function. CBS was inactivated by peroxynitrite, the product of nitric oxide and superoxide radicals. The IC(50) was approximately 150microM for 5microM ferric CBS.
Laura, Celano, Magdalena, Gil, Sebastián, Carballal, Rosario, Durán, Ana, Denicola, Ruma, Banerjee, Beatriz, Alvarez   +6 more
openaire   +2 more sources

Delay in Diagnosis of Classical Homocystinuria

JIMD Reports, Volume 67, Issue 4, July 2026.
ABSTRACT Classical homocystinuria (HCU) is an autosomal recessive disorder of methionine metabolism with a wide spectrum of severity and clinical presentation. Timely diagnosis facilitates prompt initiation of treatment, which reduces complications. Our aim was to identify the nature of the first clinical manifestation and time to subsequent diagnosis ...
Subadra Wanninayake, Reena Sharma, Diane Green, John Bassett, Tarekegn Geberhiwot, Charlotte Dawson   +5 more
wiley   +1 more source

Effect of Cysteine on Expression of Cystathionine .BETA.-Synthase in the Rat Liver.

Journal of Nutritional Science and Vitaminology, 1995
Hepatic cystathionine beta-synthase activity is decreased by the addition of cysteine to the diet. This effect of cysteine was slightly greater in diets containing 0.25% methionine than in those containing 1% methionine, and was reduced during aging.
YAMAMOTO, Nobuko, TANAKA, Takehiko, NOGUCHI, Tamio   +2 more
openaire   +3 more sources