Unique features of the cauda epididymidal epithelium of hibernating bats may promote sperm longevity
| Autor: | Elizabeth G. Crichton, Roy H. Hammerstedt, Fumie Suzuki, Philip H. Krutzsch |
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| Rok vydání: | 1993 |
| Předmět: |
Male
Cell Membrane Permeability media_common.quotation_subject Biology Cell junction Epithelium Osmotic Pressure Chiroptera Hibernation Testis medicine Animals Freeze Fracturing Osmotic pressure Cellular Senescence media_common Epididymis Tight junction Longevity Spermatozoa Agricultural and Biological Sciences (miscellaneous) Sperm Cell biology Microscopy Electron Intercellular Junctions medicine.anatomical_structure Paracellular transport Immunology Seasons Anatomy |
| Zdroj: | The Anatomical Record. 237:475-481 |
| ISSN: | 1097-0185 0003-276X |
| DOI: | 10.1002/ar.1092370406 |
| Popis: | Measurements of extremely high osmolalities in cauda epididymidal fluids of hibernating bat species led to an investigation of the junctional complex morphology of the epithelium of this sperm storage site. Freeze fracture replicas revealed the presence, at certain times of the year, of a tight junction architecture that resembled that traditionally thought to be exclusive to the blood-testis barrier, the strongest permeability barrier in the body. It is hypothesized that seasonal establishment of these specialized Sertoli cell-like tight junctions is necessary to the maintenance of the high osmotic state of the luminal environment, allowing for the prevention of dilution of its contents by paracellular routes and its protection from bursting under the osmotic pressure contained within. © 1993 Wiley-Liss, Inc. |
| Databáze: | OpenAIRE |
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