The clinical studies proved the adverse effect of Propranolol on sexual function. Regarding this issue, the key research question of this study was, whether the designed herbal nanohybrid formula EGCG-chitosan-alginate has an efficacy versus Propranolol, or not? The formula was optimized
according to the coacervation method. Its molecular structure and characteristics were confirmed. The entrapment efficiency was determined, and the stability, as well in vitro release study was conducted. The in vivo study was conducted for 65 days. To answer the raised question,
tissue weights of the testis, epididymis seminal vesicles, and prostate were determined. Oxidative stress markers as MDA and GSH were measured in testis and epididymis, while testosterone in blood serum. The semen analysis was performed. DNA damage was detected according to the comet assay
procedures. Conventional pathological examination was done in special concern to testis and epididymis. The characterization results reflected the good preparation of the formula with an amorphous structure in a range of 200 nm, high stability with ZP + 57.3 mV. The calculated EE was 84.10
± 1.19% and the release percent was 72.11 ± 0.77% for 24 hrs. All the rats increased in the weight with variations among the groups in the tissue organs. The finding exposed a significant decrease in the average of MDA in the rats' testes with a significant increase in GSH while
a non-significant difference in the epididymis, in both. The testosterone, the seminal parameters, and the DNA integrity significantly increased in the nano-formula compared to propranolol. Likewise, normal pathological findings of the nano-formula in the testis and Epididymis compared to
abnormal of propranolol. In total, the current research confirmed that EGCG had no toxic effects and able to promote fertility. The most important finding was the administration of EGCG either in normal or nano-form prior to propranolol alleviated the effects of propranolol. These findings
reflected the protection evident of EGCG versus propranolol.
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