Results 21 to 30 of about 155,517 (152)

Astrocytes produce nitric oxide via nitrite reduction in mitochondria to regulate cerebral blood flow during brain hypoxia

open access: yesCell Reports, 2023
Summary: During hypoxia, increases in cerebral blood flow maintain brain oxygen delivery. Here, we describe a mechanism of brain oxygen sensing that mediates the dilation of intraparenchymal cerebral blood vessels in response to reductions in oxygen ...
Isabel N. Christie   +14 more
doaj   +1 more source

The Mechanisms of Thiosulfate Toxicity against Saccharomyces cerevisiae

open access: yesAntioxidants, 2021
Elemental sulfur and sulfite have been used to inhibit the growth of yeasts, but thiosulfate has not been reported to be toxic to yeasts. We observed that thiosulfate was more inhibitory than sulfite to Saccharomyces cerevisiae growing in a common yeast ...
Zhigang Chen   +4 more
doaj   +1 more source

Effect of l-Cysteine on Enzymatic Browning, Antioxidant Activity, and GSH Stability in Fresh-Cut Quince: A Comparative Evaluation With Potassium Metabisulfite. [PDF]

open access: yesFood Sci Nutr
This study investigates the effectiveness of l‐cysteine and sodium metabisulfite (1% solutions) in reducing enzymatic browning and preserving antioxidant properties in fresh‐cut quince slices stored at 4°C for 9 days. l‐cysteine proved more effective than sodium metabisulfite in maintaining color brightness and enhancing antioxidant activity by ...
Demirkol O, Cerit İ, Gümüşay ÖA.
europepmc   +2 more sources

Sulfite Alters the Mitochondrial Network in Molybdenum Cofactor Deficiency

open access: yesFrontiers in Genetics, 2021
Molybdenum cofactor deficiency (MoCD) is an autosomal recessive disorder belonging to the large family of inborn errors in metabolism. Patients typically present with encephalopathy and seizures early after birth and develop severe neurodegeneration ...
Anna-Theresa Mellis   +5 more
doaj   +1 more source

Advancing the Resolution of the Sulfur Compound Disproportionation Puzzle in Dissulfuribacter Thermophilus S69ᵀ Through Quantitative Label-Free Comparative Proteomics. [PDF]

open access: yesEnviron Microbiol Rep
To date, only three microorganisms have been functionally characterised for sulfur disproportionation. Our work identifies a fourth example and provides novel proteomic insights into its underlying pathways. These findings advance our understanding of microbial sulfur catabolism and highlight the ecological role of D.
Fernandez M   +8 more
europepmc   +2 more sources

Genetic variation in ZmSO contributes to ABA response and drought tolerance in maize seedlings

open access: yesCrop Journal, 2023
Water scarcity impairs maize growth and yield. Identification and deployment of superior drought-tolerance alleles is desirable for the genetic improvement of stress tolerance in maize.
Zongliang Xia   +5 more
doaj   +1 more source

Molybdenum Cofactor Deficiency in Humans

open access: yesMolecules, 2022
Molybdenum cofactor (Moco) deficiency (MoCD) is characterized by neonatal-onset myoclonic epileptic encephalopathy and dystonia with cerebral MRI changes similar to hypoxic–ischemic lesions.
Lena Johannes   +2 more
doaj   +1 more source

Processing Strategies to Enhance the Structural and Functional Properties of Proteins From Sweet Potato By-Products. [PDF]

open access: yesJ Food Sci
ABSTRACT Sweet potato by‐products are a potential source of proteins and phenolic compounds with valuable functional properties. However, enzymatic browning driven by polyphenol oxidase (PPO) limits their stability and utilization. In this study, processing conditions were designed to achieve controlled partial PPO inactivation using ascorbic acid (AA),
Pina IA   +3 more
europepmc   +2 more sources

How are ‘atypical’ sulfite dehydrogenases linked to cell metabolism? – Interactions between the SorT sulfite deydrogenase and small redox proteins

open access: yesFrontiers in Microbiology, 2011
Sulfite dehydrogenases are enzymes that catalyze the oxidation of the toxic and mutagenic compound sulfite to sulfate, thereby protecting cells from adverse effects associated with sulfite exposure.
Louie eLow   +3 more
doaj   +1 more source

Isolated sulfite oxidase deficiency

open access: yes, 2005
Isolated sulfite oxidase deficiency is a very rare autosomal recessive disorder associated with metabolism of sulfur containing amino acids. A 4-month-old girl with intractable seizures and feeding difficulty diagnosed as isolated sulfite oxidase ...
Senbil, Nesrin   +3 more
core   +1 more source

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