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Therefore, differences in the magnitude and pattern of these primary signals generated by endurance and resistance exercise will result in the activation of different signaling pathways and different gene-expression and protein-synthesis responses in skeletal muscle. Although acute resistance and endurance-type exercise result in a similar global anabolic response in untrained skeletal muscle, increases in muscle mass (i.e., hypertrophy) and strength are significantly greater following ...
MicroRNAs (miRNAs) are a class of short, noncoding RNA molecules that bind to mRNA molecules and play a central role in regulating gene expression through posttranscriptional gene silencing (reviewed in Bushati and Cohen 2007). Most miRNAs are encoded in introns of protein-coding genes and are transcribed by RNA polymerase II as long primary-miRNAs (pri-miRNA) that encode a single miRNA or a cluster of miRNA species. Processing of pri-miRNA species in the nucleus produces stem-loop ...
Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are sometimes collectively referred to as reactive oxygen and nitrogen species (RONS). RONS, and particularly the highly reactive hydroxyl radical, can react with many molecules in cells, including DNA, proteins, and lipids. Aging is also characterized by increased RONS production and oxidative stress, and increased RONS are associated with various diseases of senescence (Pourova et al.
**Boston Bruins goalie Tim Thomas skipped the team’s visit to the White House to protest the state of American politics. **At least 20 groups submitted bids to buy the Los Angeles Dodgers, with several opening bids reportedly in excess of $1 billion. 2. With owners Fred Wilpon and Saul Katz mired in the Bernie Madoff scandal, the New York Mets’ Opening Day payroll is expected to drop to $90 million from $119 million last season.
