Aitken, R. J. & Roman, S. D. (2008). Antioxidant systems and oxidative stress in the testes. Oxidative Medicine and Cellular Longevity, 1, 15-24.
Ali, E. A., Zhandi, M., Towhidi, A., Zaghari, M., Ansari, M., Najafi, M. & Deldar, H. (2017). Letrozole, an aromatase inhibitor, reduces post-peak age-related regression of rooster reproductive performance. Animal Reproduction Science, 183, 110-117.
Amin Altawash, A. S., Shahneh, A. Z., Moravej, H. & Ansari, M. (2017). Chrysin-induced sperm parameters and fatty acid profile changes improve reproductive performance of roosters. Theriogenology, 104, 72-79.
Borghei-Rad, S. M., Zeinoaldini, S., Zhandi, M., Moravej, H. & Ansari, M. (2017). Feeding rosemary leaves powder ameliorates rooster age-related subfertility. Theriogenology, 101, 35-43.
Campbell, D. R., & Kurzer, M. S. (1993). Flavonoid inhibition of aromatase enzyme activity in human preadipocytes. The Journal of Steroid Biochemistry and Molecular Biology, 46, 381-8.
Ciftci, O., Ozdemir, I., Aydin, M. & Beytur, A. (2012). Beneficial effects of chrysin on the reproductive system of adult male rats. Andrologia, 44, 181-6.
Dhawan, K., Kumar, S. & Sharma, A. (2002). Beneficial effects of chrysin and benzoflavone on virility in 2-year-old male rats. Journal of Medicinal Food,5, 43-8.
Dimitriadis, F., Tsiampali, C., Chaliasos, N., Tsounapi, P., Takenaka, A. & Sofikitis, N. (2015). The Sertoli cell as the orchestra conductor of spermatogenesis: spermatogenic cells dance to the tune of testosterone. Hormones (Athens), 14, 479-503.
Giudice, M. G., de Michele, F., Poels, J., Vermeulen, M. & Wyns, C. (2017). Update on fertility restoration from prepubertal spermatogonial stem cells: How far are we from clinical practice? Stem Cell Research, 21, 171-177.
Ikeda, M., Kodama, H., Fukuda, J., Shimizu, Y., Murata, M., Kumagai, J. & Tanaka, T. (1999). Role of radical oxygen species in rat testicular germ cell apoptosis induced by heat stress. Biology of Reproduction, 61, 393-399.
Islam, M. N., Zhu, Z. B., Aoyama, M. & Sugita, S. (2010). Histological and morphometric analyses of seasonal testicular variations in the Jungle Crow (Corvus macrorhynchos). Anatomical Science International, 85, 121-129.
Jana, K., Yin, X., Schiffer, R. B., Chen, J. J., Pandey, A. K., Stocco, D. M., Grammas, P. & Wang, X. (2008). Chrysin, a natural flavonoid enhances steroidogenesis and steroidogenic acute regulatory protein gene expression in mouse Leydig cells. Journal of Endocrinology, 197, 315-23.
Livak, K. J. & Schmittgen, T. D. (2001). Analysis of relative gene expression data using real-time quantitative 2 -∆∆Ct Method. Methods, 25, 402-8.
Luo, L., Chen, H., Trush, M. A., Show, M. D., Anway, M. D. & Zirkin, B. R. (2006). Aging and the brown Norway rat Leydig cell antioxidant defense system. Journal of Andrology, 27, 240-7.
Luo, L., Chen, H. & Zirkin, B. R. (2001) Leydig cell aging: steroidogenic acute regulatory protein (StAR) and cholesterol side-chain cleavage enzyme. Journal of Andrology,22, 149-56.
Mantawy, E. M., El-Bakly, W. M., Esmat, A., Badr, A. M. & El-Demerdash, E. (2014). Chrysin alleviates acute doxorubicin cardiotoxicity in rats via suppression of oxidative stress, inflammation and apoptosis. European Journal of Pharmacology, 728, 107-18.
Midzak, A. S., Chen, H., Papadopoulos, V. & Zirkin, B. R. (2009). Leydig cell aging and the mechanisms of reduced testosterone synthesis. Molecular and Cellular Endocrinology, 299, 23-31
Rosenstrauch, A., Weil, S., Degen, A. A. & Friedländer, M. (1998). Leydig cell functional structure and plasma androgen level during the decline in fertility in aging roosters. General and Comparative Endocrinology, 109, 251-258.
Sanderson, J. T., Hordijk, J., Denison, M. S., Springsteel, M. F., Nantz, M. H. & van den Berg, M. (2004). Induction and inhibition of aromatase (CYP19) activity by natural and synthetic flavonoid compounds in H295R human adrenocortical carcinoma cells. Toxicological Sciences, 82, 70-79.
Sarabia Fragoso, J., Pizarro Diaz, M., Abad Moreno, J. C., Casanovas Infesta, P., Rodriguez-Bertos, A. & Barger, K. (2013). Relationships between fertility and some parameters in male broiler breeders (body and testicular weight, histology and immunohistochemistry of testes, spermatogenesis and hormonal levels). Reproduction in Domestic Animals, 48, 345-52
Surai, P., Noble, R., Sparks, N. & Speake, B. (2000). Effect of long-term supplementation with arachidonic or docosahexaenoic acids on sperm production in the broiler chicken. Journal of Reproduction and Fertility, 120, 257-264.
Thurston, R. J. & Korn, N. (2000). Spermiogenesis in commercial poultry species: anatomy and control. Poultry Science, 79, 1650-68.
Turner, T. T. & Lysiak, J. J. (2008). Oxidative stress: a common factor in testicular dysfunction. Journal of Andrology, 29, 488-98.
Weil, S., Degen, A. A., Friedlander, M. & Rosenstrauch, A. (1999a). Low fertility in aging roosters is related to a high plasma concentration of insulin and low testicular contents of ACTH and lactate. General and Comparative Endocrinology, 115, 110-5.
Weil, S., Rozenboim, I., Degen, A.A., Dawson, A., Friedländer, M. & Rosenstrauch, A. (1999b). Fertility decline in aging roosters is related to increase testicular and plasma levels of estradiol. General and Comparative Endocrinology, 115, 23-28.
Xu, Y., Li, J., Liang, W. & Zhu, W. (2013). Evaluation on Changes of Testicular Histology in Aging Men. Journal of Reproduction and Contraception, 24, 199-204.
Zirkin, B. R. & Chen, H. (2000). Regulation of Leydig cell steroidogenic function during aging. Biology of Reproduction, 63, 977-81.
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