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A recurrent loss-of-function variant in DRC1 causes non-syndromic severe asthenozoospermia with favorable intracytoplasmic sperm injection and pregnancy outcomes.
Andrology
January 2025
Institute for Advanced Biosciences, Team Genetics Epigenetics and Therapies of Infertility, University of Grenoble Alpes, Grenoble, France.
Background: Asthenozoospermia, characterized by reduced sperm motility, is a common cause of male infertility. Multiple morphological abnormalities of the sperm flagella (MMAF) represent a severe and genetically heterogeneous form of asthenozoospermia. Over 50 genes have been associated, but approximately half of MMAF cases remain unexplained.
View Article and Find Full Text PDFSpermatozoa and Spermatogenesis in the Ribbon Worm Asteronemertes gibsoni (Hoplonemertea, Oerstediidae), a Symbiont of Sea Stars.
J Morphol
December 2024
A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia.
In the phylum Nemertea, the class Hoplonemertea (former Enopla) comprises the largest number of studied species with complex spermatozoa. Asteronemertes gibsoni Chernyshev, 1991, a nemertean species having a symbiotic relationship with sea stars, is characterized by complex filiform spermatozoa. Here, spermatogenesis and spermatozoon structure in A.
View Article and Find Full Text PDFProtective effect of epidermal growth factor on cryopreservation of dromedary camel epididymal spermatozoa: Evidence from in vitro and in silico studies.
Anim Reprod Sci
January 2025
Evaluation of Natural Resources Department, Environmental Studies and Research Institute, University of Sadat City, Minufiya 32897, Egypt. Electronic address:
Epidermal growth factor (EGF) plays a crucial role in maintaining male reproductive capacity in mammals, however, its protective effects on cryopreserved dromedary camel epididymal spermatozoa have not been thoroughly investigated. This study aims to investigate the potential protective role of EGF on cryopreserved camel epididymal spermatozoa, supported by evidence from a molecular docking study. We assessed sperm motility, kinematics parameters, oxidative stress, ultrastructural changes, apoptosis, and molecular docking markers in camel epididymal spermatozoa following cryopreservation.
View Article and Find Full Text PDFThe male reproductive system of the sea spider Phoxichilidium femoratum (Rathke, 1799).
Arthropod Struct Dev
November 2024
Department of Invertebrates Zoology, Faculty of Biology, Moscow State University, Vorob'evy gory 1, building 12, Moscow, 119992, Russia. Electronic address:
Article Synopsis
- - Sea spiders (Pycnogonida) are a unique group of marine animals related to horseshoe crabs, but there's limited information on their anatomy and biology, particularly regarding reproduction.
- - This research focuses on the male reproductive system of the sea spider P. femoratum, detailing its U-shaped testis with specific features like pedal outgrowths and reduced reproductive sinus, which supports sperm development.
- - The study highlights the structure of sperm from P. femoratum, noting its lack of typical euchelicerate traits and suggesting that the associated sex-specific glands may have functions in reproduction, with ovigeral glands possibly providing antifungal substances.
Oxidative stress and energy metabolism in male reproductive damage from single and combined high-power microwave exposure at 1.5 and 4.3GHz.
Reprod Toxicol
November 2024
Beijing Institute of Radiation Medicine, Beijing 100850, PR China. Electronic address:
The effect of multi-frequency electromagnetic environments on male reproduction has attracted the medical community's interest. Studies have investigated the effects and mechanisms of single-frequency microwave exposure on male reproduction, but comparative research on high-power microwave (HPM) composite and single exposure remains scarce. This study aimed to examine the effects and mechanisms of combined 1.
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