Testosterone profile in older men with Alzheimer's disease.

Autor:	Dusi CRA; Department of Geriatric, School of Medicine of University of São Paulo, Brazil., Morillo LS; Department of Geriatric, School of Medicine of University of São Paulo, Brazil., Magaldi RM; Department of Geriatric, School of Medicine of University of São Paulo, Brazil., Machado AN; Department of Geriatric, School of Medicine of University of São Paulo, Brazil., Liberman S; Department of Geriatric, School of Medicine of University of São Paulo, Brazil., Jacob Filho W; Department of Geriatric, School of Medicine of University of São Paulo, Brazil.
Jazyk:	angličtina
Zdroj:	Dementia & neuropsychologia [Dement Neuropsychol] 2008 Oct-Dec; Vol. 2 (4), pp. 289-293.
DOI:	10.1590/S1980-57642009DN20400010
Abstrakt:	Evidence suggests low testosterone levels in Alzheimer's disease. Objectives: To compare testosterone levels between older men with and without Alzheimer's disease. Methods: Fourteen men with Alzheimer's disease were compared with twenty eight men without dementia. Demographic variables and clinical profiles were analyzed. Within fifteen days before or after the described evaluation, measures of total testosterone and Sex Hormone Binding Globulin (SHBG) were performed. Free testosterone level was calculated based on total testosterone and SHBG. Quantitative variables were analyzed using Student's t test or Kruskal-Wallis test, while qualitative variables were analyzed using chi-square or Fisher test. Results: Mean age in the Control and Alzheimer's disease groups were 72.0 (SD±4.8) years and 79.3(SD±5.9) years, respectively (p=0.001). Mean schooling between these two groups were 8.78 and (±5.86) years, respectively (p=0.022). There were no statistically significant differences between the two groups for testosterone levels, although a trend was observed for the Alzheimer's disease group to present lower levels than the control group (p=0.066). There was no direct correlation between free testosterone and age, although a trend was evident (p=0.068). Conclusions: There was no significant difference in testosterone between men with AD and those without dementia.
Databáze:	MEDLINE
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