Results 61 to 70 of about 51,909 (235)
Loss of Cx43 in Murine Sertoli Cells Leads to Altered Prepubertal Sertoli Cell Maturation and Impairment of the Mitosis-Meiosis Switch. [PDF]
, 2020 Male factor infertility is a problem in today's society but many underlying causes are still unknown. The generation of a conditional Sertoli cell (SC)-specific connexin 43 (Cx43) knockout mouse line (SCCx43KO) has provided a translational model ...
Behr, Rüdiger +10 more
core +1 more source
Small RNA pathways in mammalian oocytes
FEBS Open Bio, EarlyView.Three distinct small RNA pathways operate in mammalian oocytes: RNAi interference (RNAi), the microRNA (miRNA) pathway, and the PIWI‐associated RNA (piRNA) pathway. These pathways use small RNAs to guide sequence‐specific repression and contribute to oocyte biology by targeting genes and mobile elements or appear insignificant since different ...
Petr Svoboda, Josef Pasulka
wiley +1 more source
Spermatogonial stem cells and in vitro spermatogenesis [PDF]
Reproductive Medicine and Biology, 2011 AbstractSpermatogonial stem cells (SSCs) provide the basis for the life‐long production of enormous numbers of sperm. The nature of these mysterious cells is being clarified. Although they were regarded to be mostly dormant, dividing rarely and remaining static in a niche, their rather dynamic behavior in the seminiferous tubules has been disclosed ...
openaire +2 more sources
Selenoproteins in mammalian spermatogenesis:role of the nuclear GPx4 [PDF]
, 2011 The selenoprotein Phospholipid Hydroperoxide Glutathione Peroxidase (PHGPx/GPx4) is an enzyme unique among the various GPxs, because it is able to use protein thiols, beside glutathione, The GPx4 gene encodes for three isoforms having different ...
Maccari, Irene
core
Peripheral and central mechanisms involved in hormonal control of male and female reproduction [PDF]
, 2016 Reproduction involves the integration of hormonal signals acting across multiple systems togenerate a synchronized physiological output. A critical component of reproduction is the luteinizinghormone (LH) surge, which is mediated by estradiol (E2) and ...
Bentley, G. E. +6 more
core +1 more source
Advanced Healthcare Materials, EarlyView.An in vitro testicular model is developed by generating connective tissue equivalents from human dermal fibroblast‐derived microtissues and coupling them with human Sertoli cells or human Sertoli cell spheroids. This engineered microenvironment supports Sertoli cell maturation and functionality, providing a promising platform for studying human ...
Annachiara Scalzone +4 more
wiley +1 more source
Biology, 2022 Opsariichthys bidens belongs to the family Cyprinidae and is a small freshwater economic fish widely distributed in China. In recent years, the natural resources of O.
Xiao Chen +7 more
doaj +1 more source
Sperm chromatin dispersion test before sperm preparation is predictive of clinical pregnancy in cases of unexplained infertility treated with intrauterine insemination and induction with clomiphene citrate [PDF]
, 2016 Background/aims: A large proportion of men with normal sperm results as analyzed using conventional techniques have fragmented DNA in their spermatozoa.
De Croo, Ilse +4 more
core +2 more sources
Advanced Science, EarlyView.We identify a Lepidoptera‐conserved testis‐specific arylalkylamine N‐acetyltransferase (LTNAT) that governs male moth fertility via a novel mechanism. LTNAT loss disrupts eupyrene sperm mitochondrial derivatives and impairs apyrene sperm motility, offering a safe molecular target for innovative pesticides and genetic pest control.
Hao Sun +5 more
wiley +1 more source
Ex Vivo Spatiotemporal Characterization of Spermatogenesis in Mouse Testicular Organoids
Advanced ScienceTesticular organoids (TOs) offer an opportunity to preserve fertility, but current TO protocols are limited by suboptimal maintenance of the organoid structure, meiotic defects, and incomplete in vitro spermatogenesis (IVS). Here, a strategy is developed
Jiachen Sun +9 more
doaj +1 more source