Background Skeletal muscle mass and function are partly maintained by the supply of amino acids, altered acid transport is an important cause frailty that can lead to decreased independence with increasing age slow trauma recovery. The system-A sodium coupled neutral transporter (SNAT)-2 coded gene family SLC38A2 generates a 506 56 kDa protein acids in skeletal muscle. Ageing associated decreas...

Previous work has shown that the activity of the melatonin-forming enzyme in the rat pineal gland is elevated in rats kept in continuous darkness as compared to those kept in continuous light. Information about environmental lighting reaches the pineal gland via nerves that liberate noradrenaline. Rat pineal glands in organ culture can form C(14)-melatonin from C(14)-tryptophan as follows: tryp...