Testicular expression of TDRD1, TDRD5, TDRD9 and TDRD12 in azoospermia. [PDF]
, 2020 BACKGROUND: Tudor domain-containing proteins (TDRDs) play a critical role in piRNA biogenesis and germ cell development. piRNAs, small regulatory RNAs, act by silencing of transposons during germline development and it has recently been shown in animal ...
Aghaei, M +9 more
core +1 more source
A genetic basis for a postmeiotic X versus Y chromosome intragenomic conflict in the mouse. [PDF]
, 2012 Intragenomic conflicts arise when a genetic element favours its own transmission to the detriment of others. Conflicts over sex chromosome transmission are expected to have influenced genome structure, gene regulation, and speciation.
Affara, Nabeel A. +5 more
core +4 more sources
Nejire/dCBP-mediated control of H3 acetylation and transcriptional regulation by testis-specific Plus3 domain proteins during Drosophila spermatogenesis [PDF]
, 2018 Spermatogenesis describes the development from germ line stem cells to highly specialized sperm. Drosophila melanogaster spermatogenesis is a good model system for chromatin remodelling processes as many of these processes are similar in mammals and in ...
Hundertmark, Tim
core +1 more source
Intracytoplasmic Injection Using Spermatids and Subsequent Pregnancies: Round Versus Elongated Spermatids [PDF]
Journal of Assisted Reproduction and Genetics, 2002 The purpose of this clinical trial study was to report the outcome of intracytoplasmic injection of round (RS) and elongated (ES) spermatids retrieved from the testis of nonobstructive men. Seven and three cycles using RS and ES injections were performed, respectively.
Mohammad A, Khalili +2 more
openaire +2 more sources
Developmental changes in the histological structure of the testes, and testosterone profiles in male guinea fowls (Numida meleagris) [PDF]
, 2017 Owing to the paucity of information on the reproductive biology of guinea fowls, a study involving a total of 66 males was conducted, and documented the developmental changes in histological structure of the testes of guinea cocks from hatching until ...
Abdul-Rahman, Iddriss I. +2 more
core +1 more source
Protocol for isolation of spermatids from mouse testes
STAR Protocols, 2021 Summary: Post-meiotic spermatids become spermatozoa through developmental stages during spermiogenesis. Isolation of spermatid fractions is required to examine the change of protein expression during spermiogenesis.
Chang Rok Kim +4 more
doaj +1 more source
Cell proliferation and differentiation kinetics during spermatogenesis in Hydra carnea [PDF]
, 1985 Spermatogenesis inHydra carnea was investigated. The cell proliferation and differentiation kinetics of intermediates in the spermatogenesis pathway were determined, using quantitative determinations of cell abundance, pulse and continuous labelling ...
A Brauer +17 more
core +1 more source
Middle East Fertility Society Journal, 2013 Objective: To correlate late spermatid score and sperm count in men with normal semen analysis and oligozoospermia undergoing intracytoplasmic sperm injection (ICSI) to set the average threshold of spermatids/tubule of testicular tissue needed for normal
Ibrahim Fahmy +3 more
doaj +1 more source
Successful pregnancy after spermatid injection [PDF]
Human Reproduction, 1998 We present nine cases of spermatid intracytoplasmic injection for the treatment of non-obstructive azoospermia. In eight cases, no elongated spermatids or spermatozoa were found in previous spermiograms or testicular biopsies. In these patients, treatment was performed using ejaculated (n = 6) and testicular (n = 2) retrieved round spermatids (Sa type).
R, Bernabeu +3 more
openaire +2 more sources
An orchestrated intron retention program in meiosis controls timely usage of transcripts during germ cell differentiation [PDF]
, 2017 Global transcriptome reprogramming during sper-matogenesis ensures timely expression of factors in each phase of male germ cell differentiation. Sper-matocytes and spermatids require particularly exten-sive reprogramming of gene expression to switch from
Alberdi, Antonio J. +9 more
core +2 more sources