An ultrastructural study of testes permeability in sea urchins,Strongylocentrotus intermedius |
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| Institution: | 1. University of Silesia, Department of Animal Histology and Embryology, Bankowa 9, 40-007 Katowice, Poland;2. Charles University, Faculty of Science, Department of Zoology, Vinicna 7, 128 44 Prague 2, Czech Republic;3. Institute of Soil Biology, Biology Centre AS CR, Na Sadkach 7, CZ-370 05 Ceske Budejovice, Czech Republic;1. Shanghai Key Laboratory of Advanced High Temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Canadian Centre of Electron Microscopy and Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada;1. NEBECC (Crustacean Biology, Ecology and Culture Study Group), Departamento de Zoologia, Instituto de Biociências, UNESP, CP. 510, CEP 18.618-000 Botucatu, São Paulo, Brazil;2. NEBECC (Crustacean Biology, Ecology and Culture Study Group), Departamento de Ciências Biológicas, Faculdade de Ciências, UNESP, CEP 17.033-360 Bauru, São Paulo, Brazil;1. Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo Health Sciences Campus, 3000 Arlington Avenue, Toledo, OH 43614, United States;2. Department of Neurosciences, University of Toledo Health Sciences Campus, 3000 Arlington Avenue, Toledo, OH 43614, United States;3. Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN 55455, United States |
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| Abstract: | Permeability of testes in sea urchins, Strongylocentrotus intermedius, was investigated by using an electron-opaque tracer, lanthanum nitrate. This tracer is able to enter the basal compartment of germinative epithelium, where developing germ cells are located. However, its ability to penetrate the gonadal lumen was reduced. An incomplete permeability barrier between the basal compartment and the gonadal lumen is supposed to exist in testes of S. intermedius. |
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| Keywords: | Sea urchins Spermatogenesis Permeability barrier Blood–testis barrier Lanthanum nitrate |
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