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From spermatogenesis to fertilisation: the role of melatonin on ram spermatozoa.
Domest Anim Endocrinol
January 2025
BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain. Electronic address:
This review presents recent findings on the effect of melatonin on ram spermatozoa. This hormone regulates seasonal reproduction in the ovine species through the hypothalamic-pituitary-gonadal axis, but it also exerts direct effects on spermatogenesis, seminal quality and fertility. In the testis, melatonin stimulates blood flow to this organ, but it also appears to be involved in the differentiation of spermatogonial stem cells and the secretion of testosterone through the MT1 and MT2 receptors.
View Article and Find Full Text PDFCritical Insights into LEAP2 Biology and Physiological Functions: Potential Roles Beyond Ghrelin Antagonism.
Endocrinology
January 2025
Grupo de Neurofisiología- Instituto Multidisciplinario de Biología Celular (IMBICE) (Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de La Plata, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires), La Plata, Argentina.
Liver-expressed antimicrobial peptide 2 (LEAP2) has recently emerged as a novel hormone that reduces food intake and glycemia by acting through the growth hormone secretagogue receptor (GHSR), also known as the ghrelin receptor. This discovery has led to a fundamental reconceptualization of GHSR's functional dynamics, now understood to be under a dual and opposing regulation. LEAP2 exhibits several distinctive features.
View Article and Find Full Text PDFLow-Intensity Pulsed Ultrasound Treatment Selectively Stimulates Senescent Cells to Promote SASP Factors for Immune Cell Recruitment.
Aging Cell
January 2025
Chemical and Biological Integrative Research Center, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, Republic of Korea.
As emerging therapeutic strategies for aging and age-associated diseases, various biochemical approaches have been developed to selectively remove senescent cells, but how physical stimulus influences senescent cells and its possible application in senolytic therapy has not been reported yet. Here we developed a physical method to selectively stimulate senescent cells via low-intensity pulsed ultrasound (LIPUS) treatment. LIPUS stimulation did not affect the cell cycle, but selectively enhanced secretion of specific cytokines in senescent cells, known as the senescence-associated secretory phenotype (SASP), resulting in enhanced migration of monocytes/macrophages and upregulation of phagocytosis of senescent cells by M1 macrophage.
View Article and Find Full Text PDFSkeletal muscle-specific Bambi deletion induces hypertrophy and oxidative switching coupling with adipocyte thermogenesis against metabolic disorders.
Sci China Life Sci
January 2025
Department of Endocrinology and Metabolism, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China.
Skeletal muscle plays a significant role in both local and systemic energy metabolism. The current investigation aims to explore the role of the Bambi gene in skeletal muscle, focusing on its implications for muscle hypertrophy and systemic metabolism. We hypothesize that skeletal muscle-specific deletion of Bambi induces muscle hypertrophy, improves metabolic performance, and activates thermogenic adipocytes via the reprogramming of progenitor of iWAT, offering potential therapeutic strategies for metabolic syndromes.
View Article and Find Full Text PDFMetabolome and RNA-seq reveal discrepant metabolism and secretory metabolism profile in skeletal muscle between obese and lean pigs at different ages.
Sci China Life Sci
January 2025
Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China.
Metabolites and metabolism-related gene expression profiles in skeletal muscle change dramatically under obesity, aging and metabolic disease. Since obese and lean pigs are ideal models for metabolic research. Here, we compared metabolome and transcriptome of Longissimus dorsi (LD) muscle between Taoyuan black (TB, obese) and Duroc (lean) pigs at different ages.
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