019) when the n-3:n-6 ratio was >0.09. Two other MAT1A variants, d18777 and i15752, also showed significant PD98059 interactions with different constituents of dietary fat influencing Hcy concentrations. Furthermore,
haplotypes consisting of three variants displayed a strong interaction with n3:n6 ratio influencing Hcy concentrations.
Conclusions: Our results suggest that MAT1A genotypes appear to modulate effects of dietary fat on plasma Hcy. Published by Elsevier B.V.”
“Genetic selection for improved growth and overall meatiness has resulted in the occurrence of 2 major mutations in pigs, the Rendement Napole (RN) and Halothane (Hal) gene mutations. At the tissue level, these mutations influence energy metabolism in skeletal muscle and muscle fiber type composition, yet also influence total body composition. The RN mutation affects the adenosine monophosphate-activated protein kinase. subunit and results in increased glycogen deposition in the muscle, whereas the Hal mutation alters sarcoplasmic calcium release mechanisms and results Chk inhibitor in altered energy metabolism. From a meat quality standpoint, these mutations independently influence the extent and rate of muscle energy metabolism postmortem, respectively. Even though these mutations alter overall muscle energy metabolism and histochemically derived muscle fiber type independently, their effects have not been yet fully elucidated in respect to myosin heavy chain
(MyHC)isoform content and those enzymes responsible for defining energetics of the tissue. Therefore, the objective of this study was to determine the collective effects of the RN and Hal genes on genes and gene products associated with different muscle fiber types in
pig skeletal muscle. To overcome potential pitfalls associated with traditional muscle fiber typing, real-time PCR, gel electrophoresis, and Western blotting were used to evaluate MyHC composition and several energy-related gene expressions in muscles from wild-type, learn more RN, Hal, and Hal-RN mutant pigs. The MyHC mRNA levels displayed sequential transitions from IIb to IIx and IIa in pigs bearing the RN mutation. In addition, our results showed MyHC protein isoform abundance is correlated with mRNA level supporting the hypothesis that MyHC genes are transcriptionally controlled. However, transcript abundance of genes involved in energy metabolism, including lactate dehydrogenase, citrate synthase, glycogen synthase, and peroxisome proliferator-activated receptor a, was not different between genotypes. These data show that the RN and Hal gene mutations alter muscle fiber type composition and suggest that muscle fiber energy metabolism and speed of contraction, the 2 determinants of muscle fiber type, can be uncoupled.”
“Background and aims: The dietary habits defined as the Mediterranean diet have shown to be protective for coronary heart disease (CHD) and other morbid conditions.