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Copper excess induces autophagy dysfunction and mitochondrial ROS-ferroptosis progression, inhibits cellular biosynthesis of milk protein and lipid in bovine mammary epithelial cells.
Ecotoxicol Environ Saf
January 2025
College of Animal Science, Jilin University, Jilin Provincial Key Laboratory of Livestock and Poultry Feed and Feeding In Northeastern Frigid Area, Changchun 130062, China. Electronic address:
Excessive copper (Cu) has the potential risk to ecosystems and organism health, with its impact on dairy cow mammary glands being not well-defined. This study used a bovine mammary epithelial cell (MAC-T) model to explore how copper excess affects cellular oxidative stress, autophagy, ferroptosis, and protein and lipid biosynthesis in milk. Results showed the increased intracellular ROS, MDA, and CAT (P < 0.
View Article and Find Full Text PDFParadoxical effects of inhibition of Δ14-reductase and Δ7-reductase on porcine oocyte maturation and subsequent embryo development after parthenogenetic activation.
Theriogenology
January 2025
Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, 08826, Seoul, Republic of Korea. Electronic address:
Follicular fluid-derived meiosis-activating sterol (FF-MAS), an intermediate in the cholesterol biosynthesis pathway, plays a crucial role in the meiotic resumption of mammalian oocytes. Maintaining a high concentration of FF-MAS in vitro is challenging; therefore, AY9944 A-7, an inhibitor of Δ14-reductase [which converts FF-MAS to testis meiosis-activating sterol (T-MAS)] and Δ7-reductase (which converts T-MAS to cholesterol), has been used to enhance oocyte maturation. This study examined the effects of various concentrations (0, 10, 20, and 40 μM) of AY9944 A-7 on porcine oocyte maturation and subsequent embryo development.
View Article and Find Full Text PDFValorization of Macroalgal Hydrolysate for the Production of Lipids and DHA by Marine Microbes.
J Oleo Sci
January 2025
Botany and Microbiology Department, Faculty of Science, King Saud University.
The present study aimed to explore the potential of macroalgal hydrolysate to serve as an economical substrate for the growth of the oleaginous microbes Aspergillus sp. SY-70, Rhizopus arrhizus SY-71 and Aurantiochytrium sp. YB-05 for lipid and DHA production under laboratory conditions.
View Article and Find Full Text PDFEnhancing immunotherapy efficacy in oral cancer through AKB-9778-mediated vascular normalization.
Int Immunopharmacol
January 2025
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China. Electronic address:
Tumor vasculature exhibit numerous abnormal features distinct from those of healthy vessels, potentially advancing tumor development by establishing an aberrant microenvironment. Therefore, vascular normalization has proven to be an effective tactic for substantially enhancing treatment efficacy across multiple tumors. However, the methods to attain vascular normalization may vary among tumor types.
View Article and Find Full Text PDFReconstruction of a microbial TNT deep degradation system and its mechanism for reshaping microecology.
J Hazard Mater
January 2025
State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China. Electronic address:
This study is the first to use synthetic biological omics technology to analyze the molecular mechanism underlying deep degradation of TNT, to construct an artificial transformation system to create engineered Escherichia coli bacteria, and to use Bacillus subtilis as an expression host to explore the mechanism driving the reshaping of the deep degradation platform on microecology. Nitroreductase family protein, 2-oxoacid:acceptor oxidoreductase, NADPH-cytochrome P450 reductase, monooxygenase, ring-cleaving dioxygenase, and RraA family protein significantly participated in the reduction-hydroxylation-ring opening cleavage of TNT, achieving deep transformation of TNT to produce pyruvic acid and other products that entered the cellular metabolic cycle. The key toxic metabolic pathways of TNT, 2,4-diamino-6-nitrotoluene, 2,4,6-triaminotoluene, and 2,4,6-trihydroxytoluene are pantothenate and CoA biosynthesis.
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