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<strong>Clujul</strong> <strong>Medical</strong> 2006 vol. LXXX - nr. 1<br />
16. JAFFE AB, TORAN- ALLERAND CD, GREENGARD P, GANDY SE.: Estrogen<br />
regulates metabolism of Alzheimer amyloid β precursor protein. J Biol Chem 1994;<br />
269: 13065-13068.<br />
17. PETANCESCA SS, NAGY V, FRAIL D, GANDY S.: Ovariectomy and 17 betaestradiol<br />
modulate the levels of Alzheimer’s amyloid beta peptides in brain. Exp<br />
Gerontol 2000; 35: 1317-1325<br />
18. PAGANINI- HILL A., HENDERSON VW.: Estrogen deficiency and risk ok<br />
Alzheimer’s disease in women. Am J Epidemiol 1994; 140: 256-261 .<br />
The influence of estrogen therapy on the brain: its<br />
implications in the neurodegenerative diseases<br />
FULGA FLORESCU, N.COSTIN<br />
Summary<br />
In the long term, the decrease of post-menopausal estrogen level increases<br />
depression and anxiety, the risk of Alzheimer’s disease and Parkinson, influences the<br />
rate of ischemic strokes.<br />
The studies of estrogen substitution treatment show benefic effects on the<br />
cognitive functions (especially on the memory), but also on motility and psychical state.<br />
The estrogen protects the brain from neuro-degenerescence, inducing the formation of<br />
novo-synapses, favoring the cholinergic transmission, and promoting neural survival.<br />
The estrogen treatment at menopause delays the age related cognitive<br />
alterations, influences the estrogen sensitive neuro-transmitters, regulates brain<br />
vascularization, and protects the brain from oxidating stress.<br />
The detection of the neuroprotective effect of estrogen offers new<br />
pharmaceutical opportunities when it comes to redefine the estrogen substitution<br />
therapy.<br />
Key words: neurotransmitters, neurodegenerescence, estrogen substitution<br />
therapy, cognitive function, motility.<br />
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