Objectiye To study the effects of vitamin E on the proloferation and synthesis of collagen in rat hepatic stellate cells. Methods Hopatic stellate cells were isolated from a male Spraywe - Dawley rat by modified Fried...Objectiye To study the effects of vitamin E on the proloferation and synthesis of collagen in rat hepatic stellate cells. Methods Hopatic stellate cells were isolated from a male Spraywe - Dawley rat by modified Friedman’s method. In the isolated cells cultured and treated with interleukin - 2, we study the effects of vitamin E on their prolderation and collagen synthesis by using 3H- thymidine and 3H-proline incorporation assay, and observed these cells under inverted phase microscopy as well. ResuIts 1. The proloferation and collagen synthesis of hepatic stellate cells were increased by adding interleukin - 2. 2. Vitamin E has marked inhibitive effects on the abilities of proloferation and collagen synthesis in the cells treated with interleukin - 2. ConcIusion Vitamin E can inhibit the proliferation and collagen synthesis of hepatic stellate cells. It is possible that vitamin E affect liver fibrosis by these effects.展开更多
Background: Supplementing farm animals diet with functional ingredients may improve the nutritional quality of meat products.Diet composition has been also demonstrated to influence the gene expression with effect on ...Background: Supplementing farm animals diet with functional ingredients may improve the nutritional quality of meat products.Diet composition has been also demonstrated to influence the gene expression with effect on biological processes and pathways.However,the knowledge on the effect of nutrients at the molecular level is scant.In particular,studies on the effects of antioxidants and polyphenols dietary supplementation have been investigated mainly in rodents,and only scarcely in farm animals so far.RNA-Seq with next-generation sequencing is increasingly the method of choice for studying changes in the transcriptome and it has been recently employed also in pig nutrigenomics studies to identify diet-induced changes in gene expression.The present study aimed to investigate the effect of diets enriched with functional ingredients(linseed,vitamin E and plant extracts) on the transcriptome of pig Longissimus thoracis to elucidate the role of these compounds in influencing genes involved in muscle physiology and metabolism compared to a standard diet.Results: Eight hundred ninety-three significant differentially expressed genes(DEGs)(FDR adjusted P-value ≤ 0.05)were detected by RNA-Seq analysis in the three diet comparisons(D2-D1,D3-D1,D4-D1).The functional analysis of DEGs showed that the diet enriched with n-3 PUFA from linseed(D2) mostly downregulated genes in pathways and biological processes(BPs) related to muscle development,contraction,and glycogen metabolism compared to the standard diet.The diet supplemented with linseed and vitamin E/Selenium(D3) showed to mostly downregulate genes linked to oxidative phosphorylation.Only few genes involved in extracellular matrix(ECM)organization were upregulated by the D3.Finally,the comparison D4-D1 showed that the diet supplemented with linseed and plant extracts(D4) upregulated the majority of genes compared to D1 that were involved in a complex network of pathways and BPs all connected by hub genes.In particular,IGF2 was a hub gene connecting protein metabolism,ECM organization,immune system and lipid biosynthesis pathways.Conclusion: The supplementation of pig diet with n-3 PUFA from linseed,antioxidants and plant-derived polyphenols can influence the expression of a relevant number of genes in Longissimus thoracis muscle that are involved in a variety of biochemical pathways linked to muscle function and metabolism.展开更多
文摘Objectiye To study the effects of vitamin E on the proloferation and synthesis of collagen in rat hepatic stellate cells. Methods Hopatic stellate cells were isolated from a male Spraywe - Dawley rat by modified Friedman’s method. In the isolated cells cultured and treated with interleukin - 2, we study the effects of vitamin E on their prolderation and collagen synthesis by using 3H- thymidine and 3H-proline incorporation assay, and observed these cells under inverted phase microscopy as well. ResuIts 1. The proloferation and collagen synthesis of hepatic stellate cells were increased by adding interleukin - 2. 2. Vitamin E has marked inhibitive effects on the abilities of proloferation and collagen synthesis in the cells treated with interleukin - 2. ConcIusion Vitamin E can inhibit the proliferation and collagen synthesis of hepatic stellate cells. It is possible that vitamin E affect liver fibrosis by these effects.
基金funded by Regione Emilia-Romagna POR-FESR 2014-2020"Innovare la filiera suina mediante la valorizzazione di sottoprodotti vegetali e l’impiego di avanzate tecnologie "omiche" e di processo,per la produzione sostenibile di carne e salumi ad impatto positivo sulla salute"-Green Charcuterie grant n.PG/2015/730542
文摘Background: Supplementing farm animals diet with functional ingredients may improve the nutritional quality of meat products.Diet composition has been also demonstrated to influence the gene expression with effect on biological processes and pathways.However,the knowledge on the effect of nutrients at the molecular level is scant.In particular,studies on the effects of antioxidants and polyphenols dietary supplementation have been investigated mainly in rodents,and only scarcely in farm animals so far.RNA-Seq with next-generation sequencing is increasingly the method of choice for studying changes in the transcriptome and it has been recently employed also in pig nutrigenomics studies to identify diet-induced changes in gene expression.The present study aimed to investigate the effect of diets enriched with functional ingredients(linseed,vitamin E and plant extracts) on the transcriptome of pig Longissimus thoracis to elucidate the role of these compounds in influencing genes involved in muscle physiology and metabolism compared to a standard diet.Results: Eight hundred ninety-three significant differentially expressed genes(DEGs)(FDR adjusted P-value ≤ 0.05)were detected by RNA-Seq analysis in the three diet comparisons(D2-D1,D3-D1,D4-D1).The functional analysis of DEGs showed that the diet enriched with n-3 PUFA from linseed(D2) mostly downregulated genes in pathways and biological processes(BPs) related to muscle development,contraction,and glycogen metabolism compared to the standard diet.The diet supplemented with linseed and vitamin E/Selenium(D3) showed to mostly downregulate genes linked to oxidative phosphorylation.Only few genes involved in extracellular matrix(ECM)organization were upregulated by the D3.Finally,the comparison D4-D1 showed that the diet supplemented with linseed and plant extracts(D4) upregulated the majority of genes compared to D1 that were involved in a complex network of pathways and BPs all connected by hub genes.In particular,IGF2 was a hub gene connecting protein metabolism,ECM organization,immune system and lipid biosynthesis pathways.Conclusion: The supplementation of pig diet with n-3 PUFA from linseed,antioxidants and plant-derived polyphenols can influence the expression of a relevant number of genes in Longissimus thoracis muscle that are involved in a variety of biochemical pathways linked to muscle function and metabolism.
