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10.4103/1008-682X.155255 http://scihub22266oqcxt.onion/10.4103/1008-682X.155255 C4577580!4577580!26112475     free     free     free Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=26112475&cmd=llinks): Failed to open stream: HTTP request failed! 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Epididymosomes: a heterogeneous population of microvesicles with multiple functions in sperm maturation and storage |pdf=|usr=}}{{26112475}} gab.com Text Epididymosomes: a heterogeneous population of microvesicles with multiple functions in sperm maturation and storage JO: Asian J Androl http://www.kidney.de/pget.php?&tw=1&pmid=26112475 #FOAvip Extracellular microvesicles present in the epididymal fluid have been named epididymosomes. Many epididymosome-associated proteins are transferred to spermatozoa during their maturation in the excurrent duct. Epididymosomes are heterogeneous, with their size varying between 50 and 250 nm. Two distinct population of epididymosomes characterized by different protein compositions and diameters have been isolated from the bovine epididymal fluid using different centrifugation protocols. One subpopulation of epididymosomes was characterized by CD9 and other tetraspanin partners. Transfer of proteins from these epididymosomes to maturing spermatozoa in co-incubation experiments was inhibited by antibodies against tetraspanin proteins. This suggests that this subpopulation of epididymosomes is involved in the acquisition of proteins involved in maturation by spermatozoa in the epididymis. The other population of epididymosomes was characterized by ELSPBP1 (epididymal sperm binding protein 1), known for its affinity for the phospholipid choline group. Flow cytometric analyses showed that ELSPBP1-positive epididymosomes only interacted with dying or dead epididymal spermatozoa in a Zn2 +-dependent manner. BLVRA (biliverdin reductase) was identified as a partner of ELSPBP1. This enzyme reduces biliverdin to bilirubin: two molecules with powerful anti-oxidant properties. We hypothesize that BLVRA is involved in an ROS-scavenging mechanism protecting live epididymal spermatozoa against detrimental molecules (ROS) released by dying cells. Therefore, it appears that there are at least two epididymosome population with distinct functions: targeting specific proteins to transiting spermatozoa by tetraspanin-mediated membrane fusion, and protection of epididymal spermatozoa against ROS released from dying cells. Further work is needed to understand functions of epididymosomes in epididymal physiology and sperm maturation and storage. Twit Text FOAVip Epididymosomes: a heterogeneous population of microvesicles with multiple functions in sperm maturation and storage ????Asian J Androl http://www.kidney.de/pget.php?&tw=1&pmid=26112475 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26112475 #FOAvip English Wikipedia <ref>{{Cite pmid|26112475}}</ref> Epididymosomes: a heterogeneous population of microvesicles with multiple functions in sperm maturation and storage #MMPMID26112475 Sullivan R Asian J Androl 2015[Sep]; 17 (5): 726-9 PMID26112475show ga Extracellular microvesicles present in the epididymal fluid have been named epididymosomes. Many epididymosome-associated proteins are transferred to spermatozoa during their maturation in the excurrent duct. Epididymosomes are heterogeneous, with their size varying between 50 and 250 nm. Two distinct population of epididymosomes characterized by different protein compositions and diameters have been isolated from the bovine epididymal fluid using different centrifugation protocols. One subpopulation of epididymosomes was characterized by CD9 and other tetraspanin partners. Transfer of proteins from these epididymosomes to maturing spermatozoa in co-incubation experiments was inhibited by antibodies against tetraspanin proteins. This suggests that this subpopulation of epididymosomes is involved in the acquisition of proteins involved in maturation by spermatozoa in the epididymis. The other population of epididymosomes was characterized by ELSPBP1 (epididymal sperm binding protein 1), known for its affinity for the phospholipid choline group. Flow cytometric analyses showed that ELSPBP1-positive epididymosomes only interacted with dying or dead epididymal spermatozoa in a Zn2 +-dependent manner. BLVRA (biliverdin reductase) was identified as a partner of ELSPBP1. This enzyme reduces biliverdin to bilirubin: two molecules with powerful anti-oxidant properties. We hypothesize that BLVRA is involved in an ROS-scavenging mechanism protecting live epididymal spermatozoa against detrimental molecules (ROS) released by dying cells. Therefore, it appears that there are at least two epididymosome population with distinct functions: targeting specific proteins to transiting spermatozoa by tetraspanin-mediated membrane fusion, and protection of epididymal spermatozoa against ROS released from dying cells. Further work is needed to understand functions of epididymosomes in epididymal physiology and sperm maturation and storage. äEpididymosomes: a heterogeneous population of microvesicles with multi(epmc).pdf DeepDyve Pubget Overpricing