Permeability barrier in the mantle epithelium lining the testis in the apple-snail Pomacea canaliculata (GASTROPODA: AMPULLARIIDAE)

被引：7

作者：

Albrecht, EA ^{[1
]}

Cavicchia, JC ^{[1
]}

机构：

[1] Univ Nacl Cuyo, Fac Ciencias Med, CONICET, IHEM,Inst Histol & Embriol, RA-5500 Mendoza, Argentina

来源：

TISSUE & CELL | 2001年 / 33卷 / 02期

关键词：

permeability barrier; septate junctions; mantle; testis; molluscs; intercellular tracer;

D O I：

10.1054/tice.2000.0165

中图分类号：

R602 [外科病理学、解剖学]; R32 [人体形态学];

学科分类号：

100101 ;

摘要：

Intercellular junctions are studied in the epithelium lining the testis of the freshwater snail Pomacea canaliculata by conventional staining and lanthanum tracer techniques. The junctional complex consists of belt desmosomes and septate junctions. Septate junctions are of the pleated-sheet type and they are constantly associated with mitochondria. Gap and tight junctions appear to be absent. These septate junctions seem to be the structural correlate of an epithelial permeability barrier that separate the testis from the extrapallial space where the shell elements are deposited. These junctions may contribute to a functional barrier in the male gonad of Pomacea canaliculata. The results indicate that freshwater prosobranchs have junctional structures very close to those found in other molluscs. (C) 2001 Harcourt Publishers Ltd.

引用

页码：148 / 153

页数：6

共 44 条

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[2]

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