The concentration of androgen receptor and protein kinase A in male chicken following the administration of a combination of the epididymis and testicular extracts

Abstract

Background and Aim: Testis (T) and epididymis (E) are waste from the abattoir that is rarely used. In fact, both organs contain important chemicals needed for spermatogenesis (e.g., hormones, proteins, and other molecules). Therefore, administration of a combination of testis and epididymis (CTE) extracts may activate androgen receptors (AR) and protein kinase A (PKA) molecules that play a prominent role in spermatogenesis. We, therefore, aimed at investigating the influence of the CTE extracts on the concentration of AR and PKA in male chicken. Materials and Methods: This study used a completely randomized design with four treatment groups (K0, K1, K2, and K3) and five replications per group. K0 is a control group that received 1 mL normal saline, whereas K1, K2, and K3 are the test groups that received 1, 2, and 3 mL of CET extracts, respectively. Twenty male chickens (strain: broiler Mb 89), 3 weeks of age, weighing 500-700 g were used. We administered the injections in a 13-day period and on the 14th day; we collected and processed blood samples as serum to measure the AR and PKA concentrations using commercial chicken AR and PKA enzyme-linked immunosorbent assay kits, respectively. We performed analyses by analysis of variance using SPSS 20.0. Results: The AR concentrations in K1, K2, and K3 groups increased by 4.26%, 10.97%, and 28.04%, respectively, compared to the K0 (control group). However, this increase was not significantly different between the groups (p>0.05). Moreover, the PKA concentrations increased by 2.97%, 2.60%, and 4.08% in K1, K2, and K3 groups, respectively, compared to the control group. However, this increase was not significantly different between the groups as well (p>0.05). Conclusion: The CTE extracts tended to increase the AR and PKA concentrations even though it is not significant. Therefore, it needs further study when using the CTE extracts for spermatogenesis in male chicken.

The Prominent Role of Pituitary Adenylate Cyclase-Activating Polypeptide in Spermatogenesis and Function of Spermatozoa: A Mini Review

“…The previous study showed that administration of epididymis extract which in rich concentration of PACAP have potency in the increase of T concentration [43], FSH, LH, and follicle stimulating hormone-receptor expression [44], estrogen [45], dihydrotestosterone [46] and capable to increase the quality of spermatozoa in male local goat [47]. Furthermore, the study in male chicken showed that administration of epididymis and testicular extract combination influence the concentration of androgen receptor, protein kinase A [48], PACAP, protamine 1 and increase significantly the concentration of T [49].…”