Marbling Gene Expression

The present review will present the recent published results and discuss the main effects of nutrients mainly fatty acids on the expression of genes involved in lipid metabolism.

Marbling gene expression.

In conclusion the knowledge shows that gene expression is a metabolic factor affecting marbling and fatty acid profile in ruminant meat and diets and their nutrients have direct effect on how these genes are expressed. In the present study the hspa6 gene was expressed more in animals with a high marbling score. We confirmed many findings previously made at the biochemical level and made new discoveries. How it relates to marbling.

Fatty acid gene expression lipids lipogenesis membrane transporters implications. This study used a genome wide screen of gene expression to better understand the metabolic and functional differences between commercially valuable intramuscular fat imf and commercially wasteful subcutaneous sc fat depots in bos taurus beef cattle. The pearson s correlation coefficients of marbling and two gene s expression levels are highly correlated and also statistically significant by regression analysis tmem60. In this sense the review focuses in two phases.

Between breed and treatment on marbling score p 0 008 angus cross steers on the low vit a had the greatest marbling and resultantly the greatest quality grades p 0 02. Marbling is an important trait in characterization beef quality and a major factor for determining the price of beef in the korean beef market. In particular marbling is a complex trait and needs a system level approach for identifying candidate genes related to the trait. R 0 85 and p value 0 001.

Scd1 gene expression in lt muscle was positively correlated with lpl and fabp4 expression showing that the expression of scd1 in muscle tissue is directly related to mechanisms including the breakdown of triglycerides by lipoprotein lipase and the transport of fatty acid molecules to adipocytes by the fabp4 pathway jurie et al 2007. Differences were found in adipogenic gene expression including fabp4 rxr rxr and raldh1α1 p 0 05. Therefore we identified candidate genes associated with marbling and then confirmed candidate genes in imf. We measured carcass characteristics and gene expression in korean steers to clarify the molecular mechanism s underlying imf deposition in lm tissue by determining the correlation between imf content and gene expression abundance and by developing models to predict imf content using gene.

Intramuscular fat imf in cattle is an important component of traits that influence meat quality. In a gene expression study using blood cells from obese and normal weight humans this gene was expressed more in obese subjects. Prenatal life and finishing phase showing how nutrients can modulate gene expression affecting marbling and fatty. R 0 72 p value 0 013 dpyd.