Epididymal Maturation
Epididymal Maturation - 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.
01:28
Maturation of Endosomes
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2023
The early endosome containing internalized molecules matures through transformations in its location, morphology, intraluminal pH, and membrane protein composition. Together, these changes result in a more acidic late endosome that contains multiple intraluminal vesicles; therefore, the late endosome is also called a multivesicular body (MVB). Changes in location The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
10:23
Analysis of Epididymal Protein Synthesis and Secretion
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Cited by 14 •
2018
Here, we report the immunofluorescence localization of dynamin to illustrate the protocols for the detection of proteins in paraffin-embedded mouse epididymal sections and those of an immortalized epididymal cell line (mECap18). We also describe the protocols for the isolation of secretory proteins from both epididymal fluid and conditioned cell media.
08:12
In Vitro Differentiation of Mature Myofibers for Live Imaging
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Cited by 38 •
2017
Muscle cells are among the most complex eukaryotic cells. We present a protocol for the in vitro differentiation of highly mature myofibers that allows for genetic manipulation and clear imaging during all developmental stages.
FAQs
Specialized epithelial cells shape maturation by releasing proteins, lipids, and extracellular vesicles into the epididymal lumen. These secretions interact with sperm as they move through the duct and remodel the sperm surface. The epithelial contribution therefore connects the local biology of the epididymis with later changes in motility and fertilization capacity.
The epididymal lumen is not simply a passageway; its environment changes as sperm travel through the duct. Those local conditions, together with epithelial secretions, help regulate how sperm surfaces are modified and how functional development proceeds. This makes the lumen a central biological context for understanding why sperm properties change during epididymal transit.
Extracellular vesicles are one class of epithelial secretion involved in remodeling the sperm surface and regulating functional development. Their effects occur alongside the contributions of proteins and lipids within the epididymal environment. Studying these vesicles helps researchers examine how secreted material contributes to the acquisition of motility and fertilization capacity.
Research on epididymal maturation connects sperm changes within the epididymis to male fertility and infertility. By examining motility, membrane properties, and fertilization capacity, investigators can assess how the epididymal environment contributes to reproductive function. These outcomes provide a biological framework for understanding reproductive problems associated with sperm that have not acquired full functional competence.
Knowledge of the epididymal environment supports research on sperm preservation and assisted reproduction because these applications require attention to sperm functional properties. Studying the proteins, lipids, and extracellular vesicles associated with maturation may clarify which surface and functional changes are biologically important when researchers seek to maintain or evaluate reproductive capacity.
Because sperm function depends on interactions with the epididymal environment, maturation-related components may provide targets for nonhormonal contraception. Research can examine whether disrupting surface remodeling or functional development affects reproductive capacity. This strategy focuses on the epididymis and sperm maturation mechanisms, offering a contraceptive direction distinct from approaches based on hormonal regulation.