Results 81 to 90 of about 216,536 (392)

Single-cell analysis of [Ca²⁺]i signalling in sub-fertile men:characteristics and relation to fertilization outcome [PDF]

, 2018
STUDY QUESTIONWhat are the characteristics of progesterone-induced (CatSper-mediated) single cell [Ca2+]i signals in spermatozoa from sub-fertile men and how do they relate to fertilizing ability?SUMMARY ANSWERSingle cell analysis of progesterone-induced
Barratt, Christopher L.R., Brown, Sean G., Costello, Sarah M., Drew, Ellen, Kelly, Mark C., Martins da Silva, Sarah, Publicover, Stephen J., Ramalingam, Mythili   +7 more
core   +4 more sources

Stage‐Resolved Phosphoproteomic Landscape of Mouse Spermiogenesis Reveals Key Kinase Signaling in Sperm Morphogenesis

Advanced Science, EarlyView.
The quantitative proteomic and phosphoproteomic profiling reveals dynamic phosphorylation regulation of sperm morphogenesis. Kinase‐substrate phosphorylation network and phosphorylation module analysis, followed by in vivo knockdown and knockout analysis, identify TTBK2 and CSNK1G1 as key regulators of morphogenesis, including head, flagellar, and ...
Tianyu Zhu, Yan Zhu, Xinyi Jiang, Xiangzheng Zhang, Bing Wang, Yu Chen, Yichen Zhao, Yulian Wang, Qi Zhou, Zhongyan Han, Yaling Qi, Mengjiao Luo, Haixia Tu, Bingjie Hao, Mengmeng Gao, Jie Ren, Xin Zhou, Xingyu Zhang, Xu Chen, Haojie Li, Qian Huang, Chenghao Situ, Yueshuai Guo, Hui Zhu, Yan Li, Xuejiang Guo   +25 more
wiley   +1 more source

The battle of the sexes starts in the oviduct: modulation of oviductal transcriptome by X and Y-bearing spermatozoa

BMC Genomics, 2014
BackgroundSex allocation of offspring in mammals is usually considered as a matter of chance, being dependent on whether an X- or a Y-chromosome-bearing spermatozoon reaches the oocyte first.
C. Almiñana, I. Caballero, P. Heath, S. Maleki-Dizaji, I. Parrilla, C. Cuello, M. Gil, J. L. Vázquez, J. M. Vázquez, J. Roca, E. Martinez, W. Holt, A. Fazeli   +12 more
semanticscholar   +1 more source

Hi‐LabSpermTracking: A Novel and High‐Quality Sperm Tracking Dataset with an Advanced Ensemble Detection and Tracking Approach for Real‐World Clinical Scenarios

Advanced Intelligent Systems, EarlyView.
This study presents Hi‐LabSpermTracking, a long‐duration, expert‐annotated sperm motility dataset for detection and tracking. It evaluates You Only Look Once version 8, Real‐Time Detection Transformer, and Simple Online and Realtime Tracking with a Deep Association Metric in three scenarios. The mean ensemble method improves tracking performance. Sperm
Abdulsamet Aktas, Gorkem Serbes, Hakkı Uzun, Merve Huner Yigit, Nizamettin Aydin, Hamza Osman Ilhan   +5 more
wiley   +1 more source

Successful ICSI in Mice Using Caput Epididymal Spermatozoa

Frontiers in Cell and Developmental Biology, 2019
Spermatozoa undergo their last phase of spermiogenesis, known as maturation, as they pass through the epididymis. A recent report indicates that mouse immature spermatozoa retrieved from the caput epididymis for intracytoplasmic sperm injection (ICSI ...
Raúl Fernández-González, Ricardo Laguna, Priscila Ramos-Ibeas, Eva Pericuesta, Víctor Alcalde-Lopez, Serafín Perez-Cerezales, Alfonso Gutierrez-Adan   +6 more
doaj   +1 more source

Non-Sinusoidal Bending Waves of Sperm Flagella [PDF]

, 1965
The analyses of flagellar movement stimulated by Sir James Gray's (1955) photographic study of the movement of sea-urchin spermatozoa have used sine waves as a convenient mathematical model for the active bending waves of flagella.
Brokaw, C. J.
core  

Validation of a method for measuring sperm quality and quantity in reproductive toxicity tests with pair-breeding male fathead minnows (Pimephales promelas) [PDF]

, 2009
This article originally appeared in the ILAR e-Journal. It is reprinted with permission from the ILAR Journal, Institute for Laboratory Animal Research, National Research Council, Washington DC (www.nationalacademies.org/ilar).The fathead minnow ...
Hala, D, Holt, WV, Jobling, S, Van Look, K   +3 more
core   +1 more source

Loss‐Based Ensemble Generative Adversarial Network Model for Enhancing the Sperm Morphology Classification

Advanced Intelligent Systems, EarlyView.
A loss‐based ensemble generative adversarial network (GAN) framework is proposed to address mode collapse in sperm morphology classification. By integrating spatial augmentation and multiple GAN models, the study enhances synthetic data quality. The Shifted Window Transformer achieves 95.37% accuracy on the HuSHeM dataset, outperforming previous ...
Berke Cansiz, Hamza Osman Ilhan, Gorkem Serbes   +2 more
wiley   +1 more source

Characteristics and in Vitro Fertilization Ability of Ram Spermatozoa: Comparison of Epididymal and Ejaculated Spermatozoa

Media Peternakan, 2012
The characteristics and in vitro fertilization (IVF) ability of ram spermatozoa collected from cauda epididymal was examined. Ejaculated spermatozoa was used as control group in this experiment.
F. A. Pamungkas, M. A. Setiadi, N. W. K. Karja   +2 more
doaj  

Seasonal variations of cauda epididymal spermatozoa of bucks

Journal of Advanced Veterinary and Animal Research, 2016
Objective: The study was conducted to evaluate the influence of season on cauda epididymal spermatozoa isolated from bucks. Materials and methods: Testes of 30 mature bucks were collected from local slaughter house, and were processed for the retrieval ...
Dilip Kumar Swain, Sarvajeet Yadav, Vijay Pandey   +2 more
doaj   +1 more source