The epidermis of Timarete filigera (Polychaeta, Cirratulidae):: Histochemical and ultrastructural analysis of the gland cells

被引：10

作者：

Mastrodonato, M. ^{[1
]}

Gherardi, M. ^{[1
]}

Todisco, G. ^{[1
]}

Sciscioli, M. ^{[1
]}

Lepore, E. ^{[1
]}

机构：

[1] Univ Bari, Dipartimento Zool, I-70125 Bari, Italy

来源：

TISSUE & CELL | 2006年 / 38卷 / 05期

关键词：

Polychaeta; Timarete filigera; epidermis; lectins; mucous cells; ultrastructure;

D O I：

10.1016/j.tice.2006.06.003

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：

The aim of this study was to verify whether different living conditions of Polychaeta are correlated with morphological and functional differences in the organization of the integument. For this purpose, we decided to study the epidermis of Timarete filigera, a non-tubicolous polychaete. With this objective in mind, we have identified the various cellular types responsible for mucous secretion in the epidermis of this species and defined the histochemical composition of the mucus produced by different types of gland cells. Three types of gland cells have been identified by histochemical and ultrastructural studies in the epidermis of this polychaete. The histochemistry was carried out using standard techniques and peroxidase-labelled lectins. In type I cells, the secretory granules contain neutral glycoproteins with glucosidic residues of GaINAc, Gu1 beta 1,3 Ga1NAc, glucosidic and/or mannosidic residues. In type 2 cells, the secretory granules contain acid glycoproteins mainly sulphated with glucosidic residues of GaINAc, Gulp 1,3 Ga1NAc, glucosidic and/or mannosidic residues, and some terminal sialic acid. In type 3 cells, the residual granules have the same chemical composition as that of granules present in type 2 cells. The secretion of these glandular mucous cells consists of mainly sulphated acidic glycoproteins and GAG resistant to testis jaluronidase. In these cells, the residual granules have the same chemical composition as that of their secretion. The heterogeneity of mucus composition may be correlated with its different functions. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：279 / 284

页数：6

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