Results 1 to 10 of about 11,074 (119)

Intracytoplasmic spermatid injection in non-obstructive azoospermia: a review of current evidence and future directions [PDF]

open access: yesAsian Journal of Andrology
Non-obstructive azoospermia (NOA) represents one of the most severe forms of male infertility, with spermatozoa retrieval only possible in about half of the cases.
Missy Savira   +4 more
doaj   +2 more sources

EFFECT OF ETHANOLIC NEEM (Azadirachta indica) LEAVES EXTRACT ON DEVELOPMENT OF SPERMATID AND ANDROGEN RECEPTOR EXPRESSION IN THE TESTIS OF RABBIT

open access: yesJurnal Kedokteran Hewan, 2023
The objective of this study was to determine the effect of ethanol extract of neem (Azadirachta indica) leaves on the number of spermatids and androgen receptor expression in the testicular tissue of New Zealand White (NZW) rabbits.
Usma Aulia   +6 more
doaj   +1 more source

Single-cell RNA-sequencing reveals the transcriptional landscape of ND-42 mediated spermatid elongation via mitochondrial derivative maintenance in Drosophila testes

open access: yesRedox Biology, 2023
During spermatogenesis, mitochondria extend along the whole length of spermatid tail and offer a structural platform for microtubule reorganization and synchronized spermatid individualization, that eventually helps to generate mature sperm in Drosophila.
Jun Yu   +13 more
doaj   +1 more source

Autophagy regulates plastid reorganization during spermatogenesis in the liverwort Marchantia polymorpha

open access: yesFrontiers in Plant Science, 2023
Autophagy is a highly conserved system that delivers cytoplasmic components to lysosomes/vacuoles. Plastids are also degraded through autophagy for nutrient recycling and quality control; however, the involvement of autophagic degradation of plastids in ...
Takuya Norizuki   +5 more
doaj   +1 more source

Rbp4-Gal4, a germline driver that activates in meiosis, reveals functions for VCP in spermatid development

open access: yesFly, 2023
Valosin-containing protein (VCP) is a versatile and ubiquitously expressed AAA+ ATPase that regulates multiple stages of Drosophila spermatogenesis. While VCP has documented roles in mitotic spermatogonia and meiotic spermatocytes, it is also highly ...
Tyler J. Butsch   +2 more
doaj   +1 more source

Oral Exposure to Genistein during Conception and Lactation Period Affects the Testicular Development of Male Offspring Mice

open access: yesAnimals, 2020
Sexual hormones are essential for the process of spermatogenesis in the testis. However, the effect of maternal genistein (GEN) on the pups’ testicular development remain-unclear.
Zhicheng Shi   +8 more
doaj   +1 more source

Exploring the role of mononuclear phagocytes in the epididymis

open access: yesAsian Journal of Andrology, 2015
The onslaught of foreign antigens carried by spermatozoa into the epididymis, an organ that has not demonstrated immune privilege, a decade or more after the establishment of central immune tolerance presents a unique biological challenge.
Nicolas Da Silva, Tegan B Smith
doaj   +1 more source

Negative biomarker based male fertility evaluation: Sperm phenotypes associated with molecular-level anomalies

open access: yesAsian Journal of Andrology, 2015
Biomarker-based sperm analysis elevates the treatment of human infertility and ameliorates reproductive performance in livestock. The negative biomarker-based approach focuses on proteins and ligands unique to defective spermatozoa, regardless of their ...
Peter Sutovsky   +3 more
doaj   +1 more source

Correlation between adjusted late spermatid score and sperm count in normozoospermic and oligozoospermic men

open access: yesMiddle 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

Protocol for isolation of spermatids from mouse testes

open access: yesSTAR 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

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