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Clujul Medical - Iuliu Haţieganu

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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 />

28

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