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-Nearly a decade after the identification of the Alzheimer amyloid precursor protein (APP) gene several groups of investigators have created transgenic mice expressing APP that simulate some of the prominent behavioral and pathological features of Alzheimer's disease (Quon et al., 1991; Games et al., 1995; Hsiao et al., 1995, Hsiao et al., 1996; Moechars et al., 1996; Sturchler-Pierrat et al., 1997)...
-It is very well documented that plasma growth hormone (GH) levels decline with age in the human and in experimental animals, and there is considerable evidence that age-related changes in body composition may be caused by reduced function of the GH-IGF-I system. However, excessive GH levels are associated with reduced life expectancy in acromegalic patients and with symptoms of accelerated aging...
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