Brazilian Berry Extract Chemopreventive Action: Hormone Receptors as a Target to Mitigate Aging Prostatic Disorders.

Abstract

The Brazilian berry, also known as jaboticaba, has a great antioxidant and anti-inflammatory potential, besides demonstrating positive effects on hormonal regulation and weight loss. Nowadays, both aging and overweight are considered public health issues, promoting metabolic and hormonal changes that have a substantial role in prostate injury. We demonstrated herein that a low dose of jaboticaba peel extract (PJE) is enough to limit the onset of damages and hormone receptor alterations on the anterior prostate in the senile or high-fat diet (HFD) groups. The senile mice (11-months old) received the PJE and/or a HFD for 60 days. The anterior prostates were collected for histopathological, immunohistochemistry and western-blotting analysis. The PJE treatment reduced the epithelium atrophy and inflammatory infiltrate frequencies besides decreasing the androgen receptor (AR); estrogen receptor alpha (ERα); and insulin-like growth factor 1 receptor (IGFR-1) immunoexpression; in the anterior prostate of both senile and HFD-senile mice. However, low prostatic intraepithelial neoplasia (PIN) frequency, reduced immunoexpression of stromal AR and epithelium IGFR-1 were only observed in the anterior prostate of the PJE and HFD-treated groups. HFD intake intensified the aging-induced histopathological and hormonal alterations by further increasing the AR, ERα and IGFR-1 immunoexpression, as well as the PIN lesion incidence in the anterior prostate. Thus, the PJE was able to interfere in the hormonal signaling mediators, protecting the anterior prostate microenvironment and preventing lesion development due to aging associated or not with HFD intake.

Keywords:
Jaboticaba; High-fat diet; Prostate; Androgen receptor; Estrogen receptor; Insulin-like growth factor.

HIGHLIGHTS

• Brazilian berry mitigate the disorder onset in prostate of senile/high-fat mice.

• Brazilian berry reduced AR/ERα/IGFR-1 labeling in prostate of senile/high-fat mice.

• Brazilian berry preventive effect increases according to the prostatic damages rise.