PMID- 11447936 OWN - NLM STAT- MEDLINE DCOM- 20010830 LR - 20061115 IS - 0340-2096 (Print) IS - 0340-2096 (Linking) VI - 30 IP - 3 DP - 2001 Jun TI - Mucous cells in micropogonias furnieri gills: histochemistry and ultrastructure. PG - 135-9 AB - The characteristics of the mucous cells located in the gills of the fish Micropogonias furnieri were investigated. Using histochemical procedures that included methods for localization and characterization of glycoproteins (GPs), no differences were detected between the mucous cell contents of the primary and secondary lamellae. The GPs were identified with (a) oxidizable vecinal diols; (b) sialic acids and some of their chain variants, C7 or C9; (c) carboxyl groups and (d) sulphate groups. The electron microscope showed large mucous globules of different electro densities from mucous cells located deep in the epithelium between the other epithelial cells; the release of mucus by exocytosis was observed. GPs secreted on the surface of the mucous cells was suggested to be important for the lubrication, protection and inhibition of microorganisms. It is possibility that GPs could have similar roles in Micropogonias furnieri gills. FAU - Diaz, A O AU - Diaz AO AD - Departamento de Biologia, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata. Funes 3250, 3o Piso. (7600) Mar del Plata. Argentina. adiaz@mdp.edu.ar FAU - Garcia, A M AU - Garcia AM FAU - Devincenti, C V AU - Devincenti CV FAU - Goldemberg, A L AU - Goldemberg AL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Anat Histol Embryol JT - Anatomia, histologia, embryologia JID - 7704218 RN - 0 (Glycoproteins) SB - IM MH - Animals MH - Fishes/*anatomy & histology MH - Gills/*anatomy & histology/cytology/ultrastructure MH - Glycoproteins/chemistry MH - Respiratory Mucosa/anatomy & histology/cytology/ultrastructure EDAT- 2001/07/13 10:00 MHDA- 2001/08/31 10:01 CRDT- 2001/07/13 10:00 PHST- 2001/07/13 10:00 [pubmed] PHST- 2001/08/31 10:01 [medline] PHST- 2001/07/13 10:00 [entrez] PST - ppublish SO - Anat Histol Embryol. 2001 Jun;30(3):135-9.