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The protective effect of zinc oxide nanoparticles on boar sperm during preservation at 17 °C.
Anim Reprod
January 2025
Hebei Key Laboratory of Animal Diversity, College of Life Sciences, Langfang Normal University, Hebei Langfang, China.
More than 90% of spermatozoa of boars in pork producing countries is stored in liquid at 17 °C; however, the quality of these spermatozoa is affected by bacterial breeding and oxidative damage. This study analyzed sperm quality and sperm capacitation after storage to study the effects of the effects of ZnO nanoparticles (ZnO NPs) supplementation on seminal plasma (SP)-free sperm preservation. We investigated the effects of adding 20, 50, 100 and 200 μg/mL of ZnO NPs to a seminal free boar sperm diluent over a 7-day period at 17 °C to assess the changes in non-capacitated/capacitated sperm quality parameters, antioxidant capacity, ATP content and extent of protein tyrosine phosphorylation.
View Article and Find Full Text PDFEffect of Cashew Nut Consumption on Biomarkers of Copper and Zinc Status in Adolescents with Obesity: A Randomized Controlled Trial.
Nutrients
December 2024
Health Sciences Center, Universidade Estadual do Ceará, Fortaleza 60714-903, Brazil.
Article Synopsis
- Adolescents with obesity often have imbalanced copper and zinc levels that can impact their health, and including cashew nuts in their diet may offer improvements.
- A study was conducted where participants were divided into a control group and a cashew nut group; the latter consumed 30 g/day of roasted cashews for 12 weeks, alongside receiving nutritional counseling.
- Results showed that the cashew nut group had reduced plasma copper and increased superoxide dismutase levels, while both groups experienced increased plasma zinc and a decreased copper-to-zinc ratio, indicating potential health benefits from cashew nut consumption.
Do oxidized low-density lipoproteins link to extra hepatic manifestations in chronic, non-cirrhotic HCV patients?
Metabol Open
March 2025
Hepatogastroenterology and Infectious Diseases Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt.
Background: Tissue damage by viral hepatitis is a major cause of morbidity and mortality worldwide. Oxidation reactions and reactive oxygen species (ROS) transform proteins and lipids in plasma low-density lipoproteins (LDL) into the abnormal oxidized LDL (ox-LDL). Hepatitis C virus (HCV) infection induces oxidative/nitrosative stress from multiple sources, including the inducible nitric oxide synthase (iNOS), the mitochondrial electron transport chain, hepatocyte NAD(P)H oxidases (NOX enzymes), and inflammation.
View Article and Find Full Text PDFRegulation of sod1 mRNA and protein abundance by zinc in fission yeast is dependent on the CCR4-NOT complex.
J Biol Chem
January 2025
Department of Human Nutrition, Ohio State University, Columbus, OH, 43210; Department of Molecular Genetics, Ohio State University, Columbus, OH, 43210; Center for RNA Biology, Ohio State University, Columbus, OH, 43210.
Zinc is an essential micronutrient that serves as a cofactor in a wide variety of enzymes, including Cu-Zn Superoxide Dismutase 1 (Sod1). We have discovered in Schizosaccharomyces pombe that Sod1 mRNA and protein levels are regulated in response to cellular zinc availability. We demonstrate that lower levels of Sod1 mRNA and protein accumulate under low zinc conditions, and that this regulation does not require the sod1 promoter or known factors that regulate transcription of sod1 in response to zinc and other environmental stresses.
View Article and Find Full Text PDFTransduction of jellyfish superoxide dismutase mediated by TAT peptide ameliorates HO-induced oxidative stress in HaCaT cells.
Sci Rep
December 2024
Naval Special Medical Center, Naval Medical University, Shanghai, 200433, China.
Superoxide dismutase (SOD) plays important roles in the balance of oxidation and antioxidation in body mostly by scavenging superoxide anion free radicals (O). Previously, we reported a novel Cu/Zn SOD from jellyfish Cyanea capillata, named CcSOD1, which exhibited excellent SOD activity and high stability. TAT peptide is a common type of cell penetrating peptides (CPPs) that efficiently deliver extracellular biomacromolecules into cytoplasm.
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