This study aimed to investigate the anti-inflammatory properties of sodium phenylbutyrate (SPB) against () lipoteichoic acid (LTA)-stimulated bovine mammary alveolar (MAC-T) cells. Quantitative PCR was performed to examine the effect of SPB on inflammatory cytokines and host defense peptide (HDP) gene expression. Western blot wanalysis was used to detect the effect of SPB on the TLR2/NF-κB/NLRP3 signaling pathway. The results showed that SPB significantly suppressed the expression of TNF-α, IL-1β, IL-6; meanwhile, the markedly decreased expression of LTA-stimulated TLR2, NLRP3, ASC, caspase-1, and IL-1β, and the inhibited IkBα and p65 phosphorylation were also observed. However, increased TAP and Bac5 expression in LTA-stimulated MAC-T cells was further detected. In summary, these results suggest that SPB ameliorates the inflammatory response induced by LTA via suppressing the TLR2/NF-κB/NLRP3 signaling pathway, which indicates that SPB may be a potential agent for the treatment of bovine mastitis.
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http://dx.doi.org/10.3390/molecules23123056 | DOI Listing |
Sci Rep
December 2024
College of Animal Science and Technology, Shandong Agricultural University, Tai'an, 271018, China.
VPS28 (vacuolar protein sorting 28) is a subunit of the endosomal sorting complexes required for transport (ESCRTs) and is involved in ubiquitination. Ubiquitination is a critical system for protein degradation in eukaryotes. Considering the recent findings on the role of ubiquitination in the regulation of lipid metabolism, we hypothesized that VPS28 might affect the expression of genes involved in milk fat synthesis.
View Article and Find Full Text PDFJ Agric Food Chem
December 2024
Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan West Road, Beijing 100193, China.
In clinical mastitis of dairy cows, the abnormal accumulation of apoptotic cells (ACs) and subsequent secondary necrosis and inflammation pose significant concerns, with macrophage-mediated efferocytosis, crucial for ACs clearance, remaining unexplored in this context. In nonruminants, MER proto-oncogene tyrosine kinase (MERTK) receptors are essential for efferocytosis and A Disintegrin and Metalloproteinase 17 (ADAM17) is thought to play a role in regulating MERTK integrity. This study aimed to delineate the in situ role of efferocytosis in clinical mastitis, with a particular focus on the interaction between MERTK and ADAM17 in bovine macrophages.
View Article and Find Full Text PDFJ Agric Food Chem
December 2024
Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, National Engineering Laboratory for Animal Breeding, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Heat stress negatively affects dairy cow production, and health, leading to significant losses. Identifying mechanisms associated with heat tolerance is crucial for developing breeding strategies. Circular RNAs (circRNAs), a type of noncoding RNA, regulate cell functions like autophagy, apoptosis and proliferation.
View Article and Find Full Text PDFCell Signal
December 2024
Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, Henan, China; Key Laboratory of Veterinary Biotechnology of Henan Province, College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, Henan, China; Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, Henan, China. Electronic address:
Sirtuin 5 (SIRT5) in mitochondria possesses a strong capacity for lysine desuccinylation, involving in various biological processes. Our previous research demonstrated that NH regulated autophagy dependent on SIRT5 in bovine mammary epithelial cells (bMECs). Interestingly, we discovered that SIRT5 reduced the content of NH and glutamate by inhibiting GLS activity in bMECs, the ratio of ADP/ATP also declined.
View Article and Find Full Text PDFACS Omega
November 2024
College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
Conjugated linoleic acid (CLA) can regulate fatty acid metabolism and increase the content of unsaturated fatty acids in milk during the nutritional regulation process in dairy cows. However, its effects on milk composition and milk energy output in dairy cows remain unclear. We aimed to investigate whether RP-CLA reduces milk energy output during early lactation while lowering milk fat, as well as whether it affects milk protein synthesis and the potential mechanisms.
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