Physical Exercise Mitigates the Disturbs Caused in Ventral Prostate by High Fat Diet, Clarifying the Role of PPAR-Alpha

Body fat resulting from the consumption of fatty foods develops inflammation, a precursor to obesity, diabetes mellitus and prostatic diseases, causing tissue changes. On the other hand, aerobic physical exercise in conjunction with PPARα promotes an increase in energy expenditure, modulating cellular metabolism by altering prostate cell metabolism. This study aimed to elucidate the effect of the gene transcription factor PPARα as a prostatic regulator associated with the effects of aerobic physical exercise in mice fed to a high-fat diet. Wild Type and PPARα -/- mice (C57BL/6J) were fed a high-fat diet and submitted to aerobic physical training for 8 weeks. Prostates of male mice were analyzed histologically and metabolically for PIN progression. These findings suggest that the absence of PPARα reduces adiposity and but does not modify the expression AR and GR, up-regulate prostate inflammation, and suppresses Fas (CD95/Apo-1) increase in TNF-α, induced by prostatic lesions. On the other hand, aerobic physical exercise was effective in protecting prostatic damage induced by a high-fat diet, both in wild type and in PPARα-/- animals. The absence PPARα induces an inflammatory process and prostatic changes and associated with a high-fat diet, however, these inflammatory processes induce increased apoptosis and may further inhibit cell growth associated with physical exercise.