Results 91 to 100 of about 31,775 (244)

Production of mouse offspring from zygotes fertilized with freeze-dried spermatids

Scientific Reports, 2022
Mouse cloning by nuclear transfer using freeze-drying (FD) somatic cells is now possible, but the success rate is significantly lower than that of FD spermatozoa.
Sayaka Wakayama, Daiyu Ito, Masatoshi Ooga, Teruhiko Wakayama   +3 more
doaj   +1 more source

Testicular endocrine activity is upregulated by D-Aspartic acid in the green frog Rana esculenta [PDF]

, 2004
This study investigated the involvement of D-aspartic acid (D-Asp) in testicular steroidogenesis of the green frog Rana esculenta and its effect on stimulation of thumb pad morphology and glandular activity, a typical testosterone-dependent secondary ...
ASSISI, LOREDANA, F. Raucci, M. M. Di Fiore, P. Spinelli, S. D’Aniello, V. Botte   +5 more
core   +1 more source

The role of iron in normal and impaired testicular function

Andrology, EarlyView.
Abstract Iron plays a critical role in testicular physiology, impacting spermatogenesis, testosterone production, and overall testicular function. Iron homeostasis is maintained through systemic and cellular regulatory mechanisms, including hepcidin‐mediated systemic iron control and the iron‐responsive element/iron regulatory protein (IRE/IRP) system ...
Aileen Harrer, Esther G. Meyron‐Holtz, Andreas Meinhardt   +2 more
wiley   +1 more source

CRISPR/Cas9‐mediated Genome‐editing Reveals 10 Testis‐enriched Genes and One Non‐testis‐enriched Gene are Dispensable for Male Fecundity in Mice

Andrology, EarlyView.
ABSTRACT Background More than 1000 genes have been identified as predominantly expressed in the human testis. Advances in gene editing technologies have enabled the rapid and efficient generation of genetically engineered mice. This approach facilitates the screening of genes essential for spermatogenesis by analyzing knockout mouse models.
Yumiao Qiu, Keisuke Shimada, Masahito Ikawa   +2 more
wiley   +1 more source

Deficiency of Mkrn2 causes abnormal spermiogenesis and spermiation, and impairs male fertility. [PDF]

, 2016
Although recent studies have shed insights on some of the potential causes of male infertility, new underlining molecular mechanisms still remain to be elucidated.
Ge, Xin, Guo, Xue-Jiang, He, Jun, Jiang, Bing-Hua, Jiang, Cheng-Fei, Li, Dong-Mei, Li, Wei, Lin, Marie, Liu, Ling-Zhi, Liu, Xue, Qian, Xu, Qian, Ying-Chen, Sha, Jia-Hao, Shen, Hua, Shi, Zhu-Mei, Wang, Lin, Wang, Min, Yin, Yu, Zheng, Bo, Zheng, Ji-Tai   +19 more
core   +2 more sources

Human fertilization with round and elongated spermatids [PDF]

Human Reproduction, 1997
Human spermatids from ejaculate and testicular tissue have been utilized for evaluating human fertilization by intracytoplasmic sperm injection (ICSI) and, where possible, compared with spermatozoa utilizing sibling oocytes. Round and elongated spermatids obtained from ejaculates were either prepared through Percoll gradients or isolated and washed ...
S, Fishel, S, Green, A, Hunter, F, Lisi, L, Rinaldi, R, Lisi, H, McDermott   +6 more
openaire   +2 more sources

Microtubule Inner Protein CFAP77 Contributes to Sperm Motility and Male Fertility in Mice

Andrology, EarlyView.
ABSTRACT Background Sperm motility is essential for male fertility, and its regulation is dependent on the structural integrity of the axoneme. The axoneme consists of a conserved “9+2” microtubule arrangement and is supported by microtubule inner proteins. However, the functional significance of many microtubule inner proteins remains unclear.
Haoting Wang, Anh Hoang Pham, Mengjiao Luo, Masahito Ikawa, Haruhiko Miyata   +4 more
wiley   +1 more source

Testicular SIRT1 Loss Reveals an Aging‐Like Proteomic Landscape and Precipitates Reproductive Deterioration

Andrology, EarlyView.
ABSTRACT Background Advanced paternal age is associated with reduced male fertility and testicular dysfunction. Among the molecular regulators involved in aging, SIRT1, a NAD+‐dependent deacetylase, plays a pivotal role in maintaining oxidative balance and cellular homeostasis.
María Iniesta‐Cuerda, Jiřina Havránková, Hedvika Řimnáčová, Jiří Moravec, František Liška, Martin Knytl, Milena Králíčková, Jan Nevoral   +7 more
wiley   +1 more source

Direct Differentiation of Human Pluripotent Stem Cells into Haploid Spermatogenic Cells

Cell Reports, 2012
Human embryonic stem cells (hESCs) and induced pluripotent stem cells (hiPSCs) have been shown to differentiate into primordial germ cells (PGCs) but not into spermatogonia, haploid spermatocytes, or spermatids.
Charles A. Easley, IV, Bart T. Phillips, Megan M. McGuire, Jennifer M. Barringer, Hanna Valli, Brian P. Hermann, Calvin R. Simerly, Aleksander Rajkovic, Toshio Miki, Kyle E. Orwig, Gerald P. Schatten   +10 more
doaj   +1 more source

Defending the genome from the enemy within:mechanisms of retrotransposon suppression in the mouse germline [PDF]

, 2013
The viability of any species requires that the genome is kept stable as it is transmitted from generation to generation by the germ cells. One of the challenges to transgenerational genome stability is the potential mutagenic activity of transposable ...
A Aravin, A Dupressoir, A Dupressoir, A Dupressoir, A Fadloun, A Inagaki, A Inoue, A Inoue, A Meissner, A Prokhortchouk, A Puech, A Sookdeo, A Tsumura, A Vourekas, AA Aravin, AA Aravin, AA Aravin, AA Zabolotneva, AE Peaston, AR Muotri, AR Muotri, B Hendrich, BH Schrans-Stassen, C Chen, C Lu, C Popp, C-X Song, C-X Song, CE Nestor, CG Lian, CM Davis, CP Walsh, D Bourc’his, D Bourc’his, D Branciforte, D Guallar, D Haig, D Lucifero, D Lucifero, D Reiss, D Ribet, D Ribet, D Ribet, D Sproul, D Wolf, D Wolf, DA Kramerov, DC Hancks, DJ Lees-Murdock, DM Maatouk, Donncha S. Dunican, DS Dunican, DT Ting, E Beyret, E Beyret, E Khazina, E Li, EB Chuong, EL Kuff, ES Lander, F Santos, F Yang, FD Araujo, G Hutvagner, G Velasco, GD Evrony, H Cedar, H Cedar, H Heyn, H Kano, H Khan, H Kobayashi, H Stroud, HJ Cooke, HM Rowe, HM Rowe, HM Rowe, I Cantone, I Martín Caballero, I Suetake, IA Maksakova, Ian R. Adams, J Borgel, J Brennecke, J Chen, J Gimenez, J Lange, J Reichmann, J Reichmann, J Rossant, J Sharif, J Xiol, J-H Ng, JA Hackett, JA Hackett, JA Yoder, James H. Crichton, JD Lewis, JK Baillie, JL Garcia-Perez, JL Goodier, JN Athanikar, JO Kriegs, JP Reddington, JP Reddington, JP Thomson, JP Thomson, JV Moran, K Dennis, K Hata, K Hayashi, K Hisada, K Kurimoto, K Myant, K Zheng, K Zheng, KP Koh, L Jackson-Grusby, L Ma, L Piko, L Shen, L-Q Sun, LK Hutnick, M Abe, M Chotalia, M Denne, M Dewannieux, M Dewannieux, M Dewannieux, M Freitag, M Kaneda, M Kaneda, M Ko, M Ko, M Leeb, M Okano, M Reuter, M Reuter, M Ruggiu, M Saitou, M Shoji, M Tachibana, M Tahiliani, M Weber, M Wiench, M Xu, MA Carmell, Marie MacLennan, MC Ward, MM Dawlaty, MM Dawlaty, MM Karimi, MT Romanish, N Bannert, N Gilbert, N Lane, N Mathioudakis, N Reynolds, N Yang, N Zamudio, OH Tam, P Hajkova, P Hajkova, PJ Skene, Q Feng, Q Yan, R Brunmeir, R Burdick, R Fuente De La, R Illingworth, R Lister, R Rebollo, R Shukla, R Yaman, R Öllinger, RH Waterston, Richard R. Meehan, RJ DeBerardinis, RJA Frost, RR Meehan, S Chuma, S Fazio De, S Guibert, S Ito, S Ito, S Kagiwada, S Kaufmann, S Kuntz, S Kuramochi-Miyagawa, S Kuramochi-Miyagawa, S Kuramochi-Miyagawa, S Kuramochi-Miyagawa, S Mi, S Milutinovic, S Salle La, S Schütt, S Seisenberger, S Solyom, S Takebayashi, S Yamaguchi, S-H Lee, SA Smallwood, SA Trelogan, SB Rothbart, SFC Soper, SK Mahadevaiah, SL Martin, SL Martin, SL Martin, SL Mathias, SP Sripathy, SS Tanaka, ST Grivna, T Matsui, T Singer, T Tanaka, T Watanabe, T Watanabe, T Watanabe, T-P Gu, TS Macfarlan, UM Galli, V Chapman, VV Vagin, W Deng, W Filipowicz, W Seifarth, W Wei, W Yan, WA Pastor, X Cai, X Nan, Y Kato, Y Seki, Y Tao, Y Unhavaithaya, Y Yabuta, Y Yotsuyanagi, Y-Q Su, Z Li, ZD Smith, ZD Smith   +241 more
core   +2 more sources