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Parasitology. 2008 Apr;135(4):427-31. doi: 10.1017/S0031182007004064. Epub 2008 Jan 21.

Sex-dependent toxoplasmosis-associated differences in testosterone concentration in humans.

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1
Department of Parasitology, Faculty of Sciences, Charles University, Vinicná 7, 128 44 Prague 2, Czech Republic. flegr@cesnet.cz

Abstract

Several lines of indirect evidence suggest that subjects with latent infection of the coccidian parasite Toxoplasma gondii have a higher concentration of testosterone than uninfected controls. Here, we searched for direct evidence of latent toxoplasmosis-associated differences in testosterone concentration among a population of 174 female and 91 male students screened for Toxoplasma infection. We have found Toxoplasma-infected men to have a higher concentration of testosterone and Toxoplasma-infected women to have a lower concentration of testosterone than Toxoplasma-free controls. The opposite direction of the testosterone shift in men compared to women can explain the observed gender specificity of behavioural shifts in Toxoplasma-infected subjects.

PMID:
18205984
DOI:
10.1017/S0031182007004064
[Indexed for MEDLINE]
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