The morphological structure of prostate gland under the condition of experimental prostatopathy and after using of cholecalciferol in the different schemes of hypofertility correction

The impact of negative factors, stress, and modern living conditions damages men's health and leads to infertility. Prostatitis is often a cause of hypofertility. It is now shown that vitamin D may play a role in regulating the functioning of reproductive system organs. The aim of the study was to determine the effect of cholecalciferol on the histological structure of the prostate gland in rats with experimental prostatitis and after its application alone or in combination with a prostate protector. Experimental prostatitis was induced by cold intraoperative damage to the prostate gland. To correct prostatitis, vitamin D3 (cholecalciferol) was administered orally at a dose of 4000 IU. The prostate protector (Prostatilen, Pr) and its pharmaceutical composition, as well as vitamin D3, were administered rectally. Rats with modeled prostatitis were divided into groups: EP (cold experimental prostatitis without treatment); EP + seed oil (on the background of experimental prostatitis, animals received a solvent – apricot kernel oil); EP + vit D3 (per os) (on the background of experimental prostatitis, animals received vitamin D3); EP + Pr (rec) (on the background of experimental prostatitis, males were administered Prostatilen per rectum); EP + vit. D3 (per os) + Pr (rec) (on the background of experimental prostatitis, animals received vitamin D3 (per os) and Prostatilen gel (per rectum)); EP + (vit. D3 + Pr) (rec) (on the background of experimental prostatitis, rats were administered Prostatilen gel with vitamin D3 per rectum). Intact animals (Intact group) and sham-operated rats (Control group) were used as controls. Paraffin sections of the prostate gland were stained with hematoxylin, eosin, and Van Gieson's method. In addition to the review microscopy of the ventral lobes of the prostate gland and the isthmus between them, the power of histochemical reactions was measured, the severity of inflammation and fibrosis was assessed, the number of terminal sections of the prostatic glands with a visually unchanged state, with lumen expansion, and with wall destruction was counted, the longitudinal diameter of the acini and the height of the epithelial cells of the prostatic glands were measured. Statistical analysis of the results was performed using the standard software package "Statistica 6.0" with the use of Student's t-test and nonparametric analog of one-way analysis of variance – Kruskal-Wallis test, as well as Mann-Whitney test. It was found that rats with experimental prostatitis exhibit pronounced changes in the morphological structure of the prostate gland. The prostate-protective effect of vitamin D per os at a dose of 4000 IU was established, which reduced the manifestations of atrophic and destructive processes, signs of tissue inflammation, and coarsening of the prostate gland stroma. Signs of fibrosis development in the prostate gland in males of this group were reduced, and the number of destructive changes and the longitudinal diameter of the terminal sections of the prostatic glands of prostate ventral lobe in rats with experimental prostatitis were decreased. Thus, the addition of cholecalciferol to the basic therapy for infertility has a more pronounced corrective effect on the morphological structure of the prostate than the separate use of cholecalciferol and the prostate protector. Combining basic therapy with vitamin D enhances the prostate-protective properties of the latter and is promising for restoring reproductive function overall.