He has muscles twice the size of other kids his age and half their body fat. DNA testing showed why: The boy has a genetic mutation that boosts muscle growth. The discovery, reported in Thursday's New England Journal of Medicine, represents the first documented human case of such a mutation. 23 июн. 2004 г.
Can you genetically have more muscle?
Muscle mass can be increased if a person undertakes strength exercise, but genetic factors play an equally important role in determining how much muscle mass a person can have.
Can humans have myostatin?
Myostatin (also known as growth differentiation factor 8, abbreviated GDF8) is a protein that in humans is encoded by the MSTN gene.. Myostatin is a myokine that is produced and released by myocytes and acts on muscle cells to inhibit muscle growth.
What causes double muscle?
Double muscling is a partially recessive trait present in some beef breeds. It shows a high frequency in some breeds, while in others the frequency is low, and double-muscled individuals are rare. The double muscling is caused by an allelic series of mutations that cause a loss of function of the myostatin gene (GDF8).
Can people be born with muscles?
Finding might lead to new treatments for muscle-wasting diseases. WEDNESDAY, June 23, 2004 (HealthDayNews) -- A German child born with unusually well-developed muscles has prompted researchers to study the child's genes and follow his growth and development.
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