Results 21 to 30 of about 184,876 (205)

Spermatogonial stem cells as a source for regenerative medicine

Middle East Fertility Society Journal, 2012
Several researchers have reported the derivation of multipotent cells from both mouse and human spermatogonial stem cells. These spermatogonia-derived stem cells show similarities with embryonic stem cells both for phenotype and functionality, indicating
Liang Ning, Ellen Goossens, Mieke Geens, Dorien Van Saen, Herman Tournaye   +4 more
doaj   +1 more source

Comparative Transcriptome Analysis of Differentially Expressed Genes and Signaling Pathways between XY and YY Testis in Yellow Catfish. [PDF]

PLoS ONE, 2015
YY super-males have rarely been detected in nature and only been artificially created in some fish species including tilapia and yellow catfish (Pelteobagrusfulvidraco), which provides a promising model for testis development and spermatogenesis.
Junjie Wu, Shuting Xiong, Jing Jing, Xin Chen, Weimin Wang, Jian-Fang Gui, Jie Mei   +6 more
doaj   +1 more source

Y/X-Chromosome-Bearing Sperm Shows Elevated Ratio in the Left but Not the Right Testes in Healthy Mice

Life, 2021
The sex chromosomes play central roles in determining the sex of almost all of the multicellular organisms. It is well known that meiosis in mammalian spermatogenesis produces ~50% Y- and ~50% X-chromosome-bearing sperm, a 1:1 ratio. Here we first reveal
Chengqing Hu, Jiangcheng Shi, Yujing Chi, Jichun Yang, Qinghua Cui   +4 more
doaj   +1 more source

The Importance of Follow-Up and Evaluation of Intraoperative Findings to Determine Surgical Indications for Retractile Testis

Advances in Urology, 2023
Objectives. Ascending testis or acquired undescended testis develops in approximately 30% of cases of retractile testis, and orchiopexy is recommended for these cases.
Kazuro Kikkawa, Yuko Ueda, Shimpei Yamashita, Yasuo Kohjimoto, Isao Hara   +4 more
doaj   +1 more source

Setting Up a Cryopreservation Programme for Immature Testicular Tissue: Lessons Learned After More Than 15 Years of Experience

Clinical Medicine Insights: Reproductive Health, 2019
Young boys undergoing gonadotoxic treatments are at high risk of spermatogonial stem cell (SSC) loss and fertility problems later in life. Stem cell loss can also occur in specific genetic conditions, eg, Klinefelter syndrome (KS).
Aude Braye, Herman Tournaye, Ellen Goossens   +2 more
doaj   +1 more source

Testosterone and androstenedione concentrations in human testis and epididymis during the first two years of life [PDF]

, 1983
Testosterone and androstenedione were measured in testicular and epididymal tissue of 37 previously healthy infants between 1 and 24 months of age who died suddenly. In half of the patients elevated plasma levels of cortisol and androstenedione suggested
Eisenmenger, Wolfgang, Dörr, H. G., Bidlingmaier, F., Kuhnle, U., Knorr, D.   +4 more
core   +1 more source

Testis single-cell RNA-seq reveals the dynamics of de novo gene transcription and germline mutational bias in Drosophila

bioRxiv, 2019
The testis is a peculiar tissue in many respects. It shows patterns of rapid gene evolution and provides a hotspot for the origination of genetic novelties such as de novo genes, duplications and mutations.
Evan Witt, Sigi Benjamin, N. Svetec, Li Zhao   +3 more
semanticscholar   +1 more source

Response to Comments of Peter G. Mantle. [PDF]

, 2010
The apparently high yield of testis tumors (25%) in rats exposed long-term to Ochratoxin A (OTA) is uninterpretable without data on tumor yield in unexposed rats.
Annie Pfohl-Leszkowicz, Gary G. Schwartz, Schwartz, Gary G., Manderville, Richard A., Pfohl-Leszkowicz, Annie, Richard A. Manderville   +5 more
core   +1 more source

Abdominal wall ectopic testis - Case report and review of literature

Journal of Pediatric Surgery Case Reports, 2018
Undescended testis is a common condition which affects about 2–4% of male infants and more commonly seen in preterm infants. The descent of testis is a complex process which requires cross talk between various hormones and testes.
Vinod Raj, Rajeev Redkar, Shirin Joshi
doaj   +1 more source

Cancer-Testis Gene Expression in Hepatocellular Carcinoma: Identification of Prognostic Markers and Potential Targets for Immunotherapy

Technology in Cancer Research & Treatment, 2020
Background: Cancer-testis genes can serve as prognostic biomarkers and valuable targets for immunotherapy in multiple tumors because of their restricted expression in testis and cancer.
Yan-Peng Zhang MD, Zhi-Wei Bao PhD, Jing-Bang Wu PhD, Yun-Hao Chen PhD, Jun-Ru Chen PhD, Hai-Yang Xie PhD, Lin Zhou PhD, Jian Wu PhD, Shu-Sen Zheng PhD   +8 more
doaj   +1 more source