caa a22 4500 386345236 CHVBK 20180307111809.0 cr unu---uuuuu 161130e198902 xx s 000 0 eng 10.1017/S0022215100108308 doi S0022215100108308 pii (NATIONALLICENCE)cambridge-10.1017/S0022215100108308 Barbara M. Department of Otolaryngology, University ‘La Sapienza', Rome, Italy Department of Otolaryngology, Karolinska Hospital and Karolinska Institute, Stockholm, Sweden Carbohydrate content of the endolymphatic sac. A histochemical and lectin-labelling study in the mongolian gerbil [Elektronische Daten] [M. Barbara] A secretory activity has recently been attributed to the endolymphatic sac (ES), as a possible way to contribute to the fluid balance of the entire endolymphatic compartment. Previous histochemical studies have indicated the existence of carbohydrate complexes in the secretory product, both neutral and acidic in nature. A thorough analysis of these compounds in the gerbilline ES was carried out using both transmission electron microscopic (TEM) histochemistry, using dialyzed iron and periodic acid—chromic—silver staining techniques, as well as immunoflourescence with fluorescein-labelled lectins (FITC-lectins). N-acetylglucosamine was found to be one of the major carbodhydrate components both of the epithelial layer of the ES and of the luminal precipitate. Proofs for a local secretory activity and its intracellular pathway are presented, suggesting to be involved in the regulation of pressure and volume of inner ear fluids. Copyright © JLO (1984) Limited 1989 The Journal of Laryngology & Otology Cambridge University Press 103/2(1989-02), 137-142 0022-2151 103:2<137 1989 103 JLO https://doi.org/10.1017/S0022215100108308 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022215100108308 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Barbara M. Department of Otolaryngology, University ‘La Sapienza', Rome, Italy Department of Otolaryngology, Karolinska Hospital and Karolinska Institute, Stockholm, Sweden NATIONALLICENCE 773 0- The Journal of Laryngology & Otology Cambridge University Press 103/2(1989-02), 137-142 0022-2151 103:2<137 1989 103 JLO CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge