Publication: Comparison of ultrastructure and lectin histochemistry on the anterior medial gland of nasal septum in rat and gerbil
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Date
2010
Authors
Chang, Chi-Fen ; Chau, Yat-Pang ; Lu, Kuo-Shyan
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
The anterior medial gland (AMG), located in
the submucosa of rodent nasal septum, is suggested to
provide fluid for humidification of inspired air.
Tremendous variation of the environmental air humidity,
on which rats and gerbils depend to live, leads us to
expect a multiplicity on ultrastructure and various
subcellular glycoconjugate distribution within the AMG
acinar cells between these two species. Electron
microscopy revealed that: (1) The nucleus of AMG
acinar cells in rat was irregular-shaped, but that in gerbil
was round or elliptical; (2) Secretory granules in rat
AMG acinar cells contained homogenous content with
various electron density. However, two types of
secretory granules in gerbil AMG acinar cells were
found: one with lamellated-structure and high electron
density, while the others had particulate materials; (3)
Myoepithelial cells were present in the acinus of medial
and posterior regions in rat AMG, but absent in gerbil;
and (4) Nerve terminals were present only in the medial
and posterior rat AMG, but in all three regions of the
gerbil AMG. Lectin histochemistry demonstrated that:
(1) Rat and gerbil AMG acinar cells expressed strong
affinity toward Con A and WGA, but neither showed
any reactivity toward UEA and PNA; and (2) Varying
degrees of reactivity toward different lectins, including
DBA, PNA, SBA and EBL, were recognized in rat and
gerbil AMG acinar cells.
We confirm the species variation on the
ultrastructure and lectin histochemistry of AMG in rats
and gerbils, and speculate that these variations may be due to the different living environment.
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