Publication: Histochemical localization of glycosaminoglycans in the omasal papillae of sheep
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Date
1993
Authors
Yamamoto, Y. ; Kitamura, N. ; Yamada, J. ; Yamashita, T.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Histochemical localization of the
glycosaminoglycans in the omasal laminae were
examined at light and electron microscopic levels. The
core region of the omasal papillae was stained strongly
with alcian blue at pH 2.5 and 1.0. The staining was
degraded moderately and completely when tissue
sections were pretreated with mild and active
methylation, respectively. Alcianophilia was moderately
decreased with saponification. Furthermore, enzymatic
digestion procedures showed that these alcianophilic
substances contained a large amount of hyaluronic acid
and chondroitin sulphate. Ultrastructurally, a spider weblike
structure was widely distributed among the spindleshaped
fibroblast-like cells and fibrous networks of
collagen and elastin. These results suggest that the core
region of the omasal papillae not only acts as a physical
buffer resisting the local pressure from the lumen, but
may also influence material transport through the omasal
mucosa.
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