The effect of repeated immobilization (7 days for 2.5 hours a day) and 7-day hypokinetic exposure on the reproductive organs of male rats of Wistar strain was investigated. In immobilized rats the weight of reproductive organs (testes, epididymidis and seminal vesicles) was reduced. In animals of both subgroups the spermatozoid concentration in the epididymal suspension was lowered and the relative content of spermatozoids with morphologically abnormal heads in suspension smears was increased. Cytological analysis of cell elements of the spermatogenic epithelium revealed a slight decrease in the number of spermatogonia, spermatocytes and Leydig's cells. In all experimental animals the number of multinuclear sexual cells of essentially every generation was significantly increased. It is concluded that the above stressogenic conditions produce stronger changes in reproductive organs than space flight per se.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Ventral versus dorsal onlay buccal mucosal graft urethroplasty for non-traumatic proximal bulbar urethral strictures in sexually active men: erectile and urinary functions.
World J Urol
January 2025
Urology Department, Faculty of Medicine, Tanta University, Tanta, Egypt.
Purpose: To compare the erectile and urinary functions of ventral and dorsal onlay buccal mucosal graft (BMG) urethroplasty in the management of proximal bulbar urethral strictures (PBUS) in sexually active men.
Patients And Methods: We retrospectively included patients with primary non-traumatic PBUS who were treated with (BMG) urethroplasty at our department between March 2019 and March 2023 either ventral or dorsal approaches. Patients were assessed at 3- and 12-months postoperatively for urinary and erectile functions.
Dynamic Force Sensing for Continuous Scraping Towards Endometrium Repair Surgery.
Int J Med Robot
February 2025
Shenyang Jianzhu University, Shenyang, China.
Background: A surgical robot with force feedback can guarantee precise and gentle manipulation for endometrial repair, ensuring the effectiveness and safety of the manipulation. However, the design of force sensors for surgical robots is challenging due to the limited anatomical space and the requirement for continuous rotation.
Methods: This paper presents a novel force-sensing surgical instrument for endometrial repair, including an inner scraping instrument and an outer force sensing sheath.
Exploring the Interplay Between Cervicovaginal Microbiome, HPV Infection, and Cervical Intraepithelial Neoplasia in Taiwanese Women.
J Med Virol
February 2025
Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan.
This study examined the relationship between the vaginal microbiome, HPV infection, and cervical intraepithelial neoplasia (CIN) in 173 women. Subjects were grouped by HPV status and cervical lesion severity, ranging from HPV-negative to CIN Grade 2 or higher. Using VALENCIA classification, the study identified different community state types (CSTs) of vaginal microbiota, with CST IV subtypes (Staphylococcus dominated) showing high diversity and increased pathogenic bacteria.
View Article and Find Full Text PDFHypothermic machine perfusion in uterus transplantation in a porcine model: A proof of concept and the first results in graft preservation.
Acta Obstet Gynecol Scand
January 2025
Department of Gynecology, Rennes University Hospital, Hôpital Sud, Rennes, France.
Introduction: Graft optimization is a necessity in order to develop uterus transplantation from brain-dead donors, as a complement to living donors, as these grafts are rare and the last organs retrieved in multiple organ donation. The aim of this study was to assess the feasibility and interest of hypothermic machine perfusion (HMP) in uterus transplantation using a porcine model; secondary outcomes were the evaluation of the graft's tolerance to a prolonged cold ischaemia time and to find new biomarkers of uterus viability.
Material And Methods: Fifteen uterus allotransplantations were performed in a porcine model, after 18 h of cold ischaemia, divided in three groups: Static cold storage in a HTK solution, HMP (with the VitaSmart (™) machine Bridge to Life Ltd.
Fam170a deficiency causes male infertility by impairing histone-to-protamine exchange during mouse spermiogenesis.
Nucleic Acids Res
January 2025
Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong 226001, China.
Chromatin remodeling, which involves the histone-to-protamine exchange process during spermiogenesis, is crucial for sperm nuclear condensation and male fertility. However, the key regulators and underlying molecular mechanisms involved in this process remain largely unexplored. In this study, we discovered that deficiency in the family with sequence similarity 170 member A (Fam170a) led to abnormal sperm nuclear morphology and male infertility in mice, mirroring the observation of very low Fam170a transcription levels in sperm of infertile men with teratozoospermia.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!