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- W1515697505 abstract "It is well known that the epididymis is an excellent environment to maintain sperm viability. Therefore, we used different sections of bovine epididymis (caput, corpus, and cauda) to develop epithelial cell culture monolayers to identify factors that will increase sperm survival in the freezing-thawing process. Each epididymal section was dissected and treated with collagenase to obtain epithelial cell clusters. The cells were cultured in RPMI-1640 medium with 10% serum at 38.5 degrees C. A confluent monolayer was obtained after 5-7 days in culture and preliminary characterization using cytokeratin antibody indicated that the cell culture contained 85%-95% of epithelial cells. These cellular cultures were tested for their ability to maintain motility of epididymal and frozen-thawed spermatozoa. Washed spermatozoa were added to obtain a final dilution of 1 x 10(6) spermatozoa/mL. The motility of frozen-thawed spermatozoa was also recorded after incubation in conditioned media. Our results show that cocultures of spermatozoa and epididymal cell monolayers for 24 and 48 hours were beneficial for maintaining epididymal and frozen-thawed sperm motility (36.0% and 20.4%) compared with spermatozoa cultured with fibroblast cells or in the absence of a cell monolayer (0%; P < .01). The conditioned medium provides favorable conditions for sperm motility. Results with conditioned medium on maintenance of frozen-thawed sperm motility suggest that epididymal cells in vitro secrete beneficial factors that prolong the sperm survival." @default.
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- W1515697505 date "2000-12-06" @default.
- W1515697505 modified "2023-09-23" @default.
- W1515697505 title "Epididymal epithelial cells cultured in vitro prolong the motility of bovine sperm." @default.
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