Spermatogenesis following male germ-cell transplantation

In the male person, a population of diploid stem-cell spermatogonia unceasingly undergoes self-renewal and produces relation cells, that initiate the advanced method of cellular differentiation that ends up in mature spermatozoa. we have a tendency to report here that stem cells isolated from testes of donor male mice can repopulate sterile testes once injected into body fluid tubules. Donor cell gametogenesis in recipient testes showed traditional morpholigical characteristics and created mature spermatozoa. this system, besides gap new avenues of basic analysis into gametogenesis and stem-cell self-renewal, could prove helpful as a tool for life science and biotechnology. [1]

Estrogen and Spermatogenesis

Although it’s been celebrated for several years that oestrogen administration has injurious effects on male fertility, knowledge from transgenic mice deficient in oestrogen receptors or aromatase purpose to a necessary physiological role for estrogen in male fertility. This review summarizes the present information on the localization of oestrogen receptors and aromatase within the ballock in a shot to grasp the doubtless sites of estrogen action. The review additionally discusses the various studies that have used models using the administration of steroid hormone substances to point out that male fertility is alert to oestrogen, so providing a mechanism by that inappropriate exposure to steroid hormone substances might cause adverse effects on gametogenesis and male fertility. [2]

Spermatogenesis in fish

Spermatogenesis could be a organic process process throughout that alittle range of diploid spermatogonial stem cells manufacture an oversized number of extremely differentiated spermatozoa carrying a haploid, recombined order. we tend to characterise morphologically the various sex cell stages with specific attention for the spermatogonial generations, as well as the stem cells and their specific capability to colonise a recipient’s nut once transplantation. we tend to propose a word for fish germ cells to enhance the comparison among totally different teleost however additionally to higher vertebrates. Survival and development of germ cells depends on their continuous and shut contact to Sertoli cells, and that we review their multiple roles within the cystic mode of gametogenesis seen in fish. [3]

Spermatogenesis in haploid males of the jewel wasp Nasonia vitripennis

Males of hymenopter insects, that embrace ants, bees and wasps, develop as haploids from infertile eggs. so as to accommodate their lack of homologous body pairs, some hymenopterans like the Apis mellifera are shown to supply haploid spermatozoon through associate unsuccessful meiosis. we tend to used microscopic approaches to check landmark aspects of gametogenesis within the jewel wasp Nasonia vitripennis, a model for hymenopter replica and development. Our work demonstrates that N. [4]

A Study of Ginseng Effects on Spermatogenesis Multiplications (TDI, RI, SI) Proceeding Scrotal Heat Shock Induction in Rat

Objective: Ginseng could be a plant that has high inhibitor feature and contains Ginsenosides that encompasses a high affectivity on testicle’s tissue. This study is finished to extend the survival of germ cells and conjointly to search out out its effects on decreasing the restoration time of broken nut tissues continuing heat shock induction. [5]


[1] Brinster, R.L. and Zimmermann, J.W., 1994. Spermatogenesis following male germ-cell transplantation. Proceedings of the National Academy of Sciences, 91(24), pp.11298-11302. (Web Link)

[2] O’donnell, L., Robertson, K.M., Jones, M.E. and Simpson, E.R., 2001. Estrogen and spermatogenesis. Endocrine reviews, 22(3), pp.289-318. (Web Link)

[3] Schulz, R.W., de França, L.R., Lareyre, J.J., LeGac, F., Chiarini-Garcia, H., Nobrega, R.H. and Miura, T., 2010. Spermatogenesis in fish. General and comparative endocrinology, 165(3), pp.390-411. (Web Link)

[4] Spermatogenesis in haploid males of the jewel wasp Nasonia vitripennis
Patrick M. Ferree, John C. Aldrich, Xueyuan A. Jing, Christopher T. Norwood, Mary R. Van Schaick, Manjinder S. Cheema, Juan Ausió & Brent E. Gowen
Scientific Reportsvolume 9, Article number: 12194 (2019) (Web Link)

[5] Moradpour, H., Neshat, M. and Safavi, E. (2018) “A Study of Ginseng Effects on Spermatogenesis Multiplications (TDI, RI, SI) Proceeding Scrotal Heat Shock Induction in Rat”, Journal of Pharmaceutical Research International, 22(5), pp. 1-7. doi: 10.9734/JPRI/2018/42177. (Web Link)

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