Epididymal Sperm
Epididymal Sperm - Related Videos
06:41
A Technique for Percutaneous Epididymal Spermatozoa Aspiration and Processing
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2026
Source:Li Xiaoming1, Liu Xiao1, Li Haiyang1, Cai Xiaohua1, Ou Jianping11Center for Reproductive Medicine, The Third Affiliated Hospital of Sun Yat-sen University.This video demonstrates the percutaneous aspiration of epididymal spermatozoa from a patient with azoospermia, a condition characterized by the absence of spermatozoa in the semen. The procedure involves disinfecting the scrotal area, aspirating epididymal fluid using a syringe with a specialized culture solution and processing the...
09:30
Phosphopeptide Analysis of Rodent Epididymal Spermatozoa
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Cited by 26 •
2014
Proteomic analysis of any cell type is highly dependent on both purity and pre-fractionation of the starting material in order to de-complexify the sample prior to liquid chromatography mass spectrometry (MS). By using back-flushing techniques, pure spermatozoa can be obtained from rodents. Following digestion, phosphopeptides can be enriched using TiO2.
10:00
Harvesting Sperm and Artificial Insemination of Mice
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Cited by 17 •
2007
This protocol demonstrates methods for extracting sperm from the testes of males and then inseminating female mice. This procedure is useful when precise time is needed in developmental studies as well as transgenic work.
10:02
Two Types of Assays for Detecting Frog Sperm Chemoattraction
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Cited by 5 •
2011
Eggs and the extracellular coatings around eggs frequently release peptides, proteins and small molecules that communicate with sperm to guide them to the egg thereby promoting fertilization. Using frog sperm we describe and compare two classes of assays used to detect sperm chemoattraction – sperm accumulation assays and sperm tracking assays.
05:46
Isolation and In vitro Activation of Caenorhabditis elegans Sperm
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Cited by 26 •
2011
A protocol for isolating and activating spermatids from male C. elegans is described here. Cutting the posterior end of male releases spermatids. The spermatids can be activated by addition of protease.
FAQs
Regional changes expose spermatozoa to different epithelial secretions and luminal conditions as they move through the epididymal duct. These changing environments remodel the sperm membrane and surface proteins, producing functional differences during transit. The cumulative effect is the development of progressive motility and preparation for later fertilization-related events.
Epididymal epithelial secretions provide environmental signals that modify sperm during post-testicular maturation. Their effects include remodeling the sperm membrane and altering surface proteins, changes that help sperm acquire progressive motility. Because these secretions act within a changing ductal environment, they are central to how epididymal transit prepares sperm for subsequent reproductive processes.
Epididymal maturation and capacitation occur at different stages and serve different purposes. Transit through the epididymis remodels the sperm membrane and surface proteins and supports the acquisition of progressive motility. Capacitation occurs subsequently, so epididymal maturation prepares sperm for fertilization without representing the final fertilization-related functional state.
Examination of epididymal sperm can provide information about post-testicular maturation and sperm quality, rather than focusing only on events in the testes. Researchers can use these observations to investigate whether sperm acquire progressive motility and undergo appropriate surface remodeling. This information supports the study and diagnosis of male infertility.
The distal epididymis serves as a storage site for mature sperm before ejaculation. This location allows researchers to examine sperm after they have completed the principal maturation changes associated with epididymal transit. Studying stored cells can therefore help evaluate mature sperm quality and distinguish storage-stage observations from earlier maturation events.
Epididymal sperm research identifies post-testicular maturation processes that influence sperm function and fertilization readiness. Those processes provide scientific context for developing improved contraceptive approaches that affect sperm maturation, as well as assisted-reproduction strategies that evaluate or use sperm quality. The work connects epithelial regulation, motility, and reproductive outcome without treating testicular production as the only determinant.