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Written by Robbie Durand
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Sunday, 11 May 2008 |
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It's the
weekend...I time to get hammered! Acute
alcohol intoxication has been shown to decrease protein synthesis in a dose
dependent manner however gene expression in muscle is unknown.
It's the
weekend...I time to get hammered! Acute
alcohol intoxication has been shown to decrease protein synthesis in a dose
dependent manner however gene expression in muscle is unknown. Researchers examined gene expression in
muscle after rats were given an oral dose of alcohol equivalent to acute human
alcohol ingestion. Acute alcohol
intoxication dramatically up regulated the expression of MuRF1 (The MuRF1
protein was identified as an atrophy-specific factor, whose expression is
up-regulated in atrophying muscle.) and, to a lesser extent, atrogin-1
(atrogin-1 is very strongly induced in many catabolic states). The alcohol-induced increase in atrophy genes
expression appeared maximal between 4-8 hours after alcohol administration;
however, values had returned to basal levels by 24 hours. Moreover, food
restriction after alcohol administration was not responsible for this increase.
Of note, this increase in atrogin-1 and MuRF1 appeared restricted to
predominantly fast-twitch muscles, with no change detected in either the
slow-twitch muscles. Don't expect to
make gains in muscle if you are drinking and partying..
Vary TC, Frost RA, Lang CH. Acute Alcohol Intoxication
Increases Atrogin-1 and MuRF1 mRNA without Increasing
Proteolysis in Skeletal Muscle. Am J Physiol Regul Integr
Comp Physiol. 2008
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