Document Detail


Lectin histochemistry of gastrointestinal glycoconjugates in the greater horseshoe bat, Rhinolophus ferrumequinum (Schreber, 1774).
MedLine Citation:
PMID:  17570476     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Mucins in the gastrointestinal tract of Rhinolophus ferrumequinum were investigated by histochemistry and lectin histochemistry to evaluate morphofunctional variations of different regions and their possible physiological and evolutionary implications. Histochemical methods included periodic acid-Schiff (PAS), Alcian blue (AB) at pH 2.5 and 1.0 and high-iron-diamine AB pH 2.5. Binding of lectins Con A, DBA, WGA, LTA, LFA, PNA and SBA; LFA, PNA and SBA with prior sialidase treatment; and paradoxical Con A were evaluated. The oesophagus lacked glands. The stomach was divided into a short cardias, a wide fundus and a brief pylorus. The surface muciparous cells secreted sulpho- and sialomucins with N-acetylgalactosamine (GalNAc) residues, N-acetyllactosamine and (beta1,4 N-acetylglucosamine)(n) chains. Towards the pylorus, N-acetylgalactosamine residues disappeared and acidity decreased. Cardiac glands, neck cells in the fundic glands, pyloric and duodenal Brunner's glands all shared neutral, stable class-III mucins, mainly with N-acetylgalactosamine sequences. The intestine was divided into a duodenum, a jejuno-ileum and a short rectum. The goblet cells produced sulpho- and sialomucins with sialylated N-acetylgalactosamine sequences, (beta1,4 N-acetylglucosamine)(n) and N-acetyllactosamine, whose sialylation increased towards the rectum. The main features of the mucins are probably associated with the requirements of fast absorption and food passage and in protection against mechanical and pathogenic injuries.
Authors:
Giovanni Scillitani; Sara Zizza; Giuseppa Esterina Liquori; Domenico Ferri
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Publication Detail:
Type:  Journal Article     Date:  2007-06-13
Journal Detail:
Title:  Acta histochemica     Volume:  109     ISSN:  0065-1281     ISO Abbreviation:  Acta Histochem.     Publication Date:  2007  
Date Detail:
Created Date:  2007-10-05     Completed Date:  2008-03-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370320     Medline TA:  Acta Histochem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  347-57     Citation Subset:  IM    
Affiliation:
Dipartimento di Zoologia, Laboratorio di Istologia e Anatomia comparata, Università degli Studi di Bari, via Orabona 4/a, I-70125 Bari, Italy. g.scillitani@biologia.uniba.it
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MeSH Terms
Descriptor/Qualifier:
Animals
Chiroptera / metabolism*
Female
Gastrointestinal Tract / metabolism*
Glycoconjugates / metabolism*
Lectins / metabolism*
Male
Chemical
Reg. No./Substance:
0/Glycoconjugates; 0/Lectins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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