Results 21 to 30 of about 109,586 (294)

Spermatogenesis without spermiogenesis in Laudakia caucasia (Reptilia: Agamidae): the role of hibernation [PDF]

open access: yesIranian Journal of Animal Biosystematics, 2007
During hibernation period from Mid October to Late March, we removed testis of Laudakia caucasia. Based on histological and statistical analyses we obtained two phases in spermatogenesis in this lizard as follows: (a) from October to December, in which ...
N. Rastegar-Pouyani, F. Torki
doaj   +1 more source

Pathological and molecular examinations of postmortem testis biopsies reveal SARS-CoV-2 infection in the testis and spermatogenesis damage in COVID-19 patients

open access: yesCellular & Molecular Immunology, 2020
In late December 2019, the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19), was identi fi ed in Wuhan, China, and the ensuing pandemic has led to more than 50 million infected ...
Xixiang Ma   +13 more
semanticscholar   +1 more source

Multipathway synergy promotes testicular transition from growth to spermatogenesis in early-puberty goats

open access: yesBMC Genomics, 2020
Background The microscopic process of postnatal testicular development in early-puberty animals is poorly understood. Therefore, in this study, 21 male Yiling goats with average ages of 0, 30, 60, 90, 120, 150 and 180 days old (each age group comprised ...
Dongdong Bo   +9 more
doaj   +1 more source

Gene expression profiles of mouse spermatogenesis during recovery from irradiation

open access: yesReproductive Biology and Endocrinology, 2009
Background Irradiation or chemotherapy that suspend normal spermatogenesis is commonly used to treat various cancers. Fortunately, spermatogenesis in many cases can be restored after such treatments but knowledge is limited about the re-initiation ...
Skakkebæk Niels E   +7 more
doaj   +1 more source

In Vitro Spermatogenesis in Explanted Adult Mouse Testis Tissues. [PDF]

open access: yesPLoS ONE, 2015
Research on in vitro spermatogenesis is important for elucidating the spermatogenic mechanism. We previously developed an organ culture method which can support spermatogenesis from spermatogonial stem cells up to sperm formation using immature mouse ...
Takuya Sato   +5 more
doaj   +1 more source

Multi-omics analysis reveals that iron deficiency impairs spermatogenesis by gut-hormone synthesis axis

open access: yesEcotoxicology and Environmental Safety, 2022
Considering that research has mainly focussed on how excessive iron supplementation leads to reproductive cytotoxicity, there is a lack of in-depth research on reproductive system disorders caused by iron deficiency. To gain a better understanding of the
Fa-Li Zhang   +6 more
doaj   +1 more source

Testicular miRNAs in relation to spermatogenesis, spermatogonial stem cells and cancer/testis genes

open access: yesScientific African, 2019
The process of spermatogenesis in human involves three organized biological processes, through which spermatogonia cells undergo mitosis, meiosis and finally differentiation into mature spermatozoa.
Maryam Beigom Mobasheri   +1 more
doaj   +1 more source

Follicle-Stimulating Hormone (FSH) Action on Spermatogenesis: A Focus on Physiological and Therapeutic Roles

open access: yesJournal of Clinical Medicine, 2020
Background: Human reproduction is regulated by the combined action of the follicle-stimulating hormone (FSH) and the luteinizing hormone (LH) on the gonads.
D. Santi   +7 more
semanticscholar   +1 more source

Chromatin-Associated Protein Sugp2 Involved in mRNA Alternative Splicing During Mouse Spermatogenesis

open access: yesFrontiers in Veterinary Science, 2021
Mammalian spermatogenesis is a highly ordered process that is determined by chromatin-associated moderators which still remain poorly understood. Through a multi-control group proteomics strategy, we confirmed that Sugp2 was a chromatin-associated ...
Junfeng Zhan   +22 more
doaj   +1 more source

Long non-coding RNAs (lncRNAs) in spermatogenesis and male infertility

open access: yesReproductive Biology and Endocrinology, 2020
Background Long non-coding RNAs (lncRNAs) have a size of more than 200 bp and are known to regulate a host of crucial cellular processes like proliferation, differentiation and apoptosis by regulating gene expression.
Meghali Joshi, S. Rajender
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy