Fine Structue of the Parotid Gland of Djungarian Hamster (&lt;I&gt;Phodopus sungarvs&lt;/I&gt;)

Suzuki, Syusaku; Ando, Akio; Mohri, Shiro; Nishinakagawa, Hayao; Otsuka, Junichi

doi:10.1538/expanim1978.32.4_175

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…The parotid and mandibular intercalated duct cells of the cotton rat contained a few electron-dense granules and poorly developed cytoplasmic organelles. Their appearances were similar to those of parotid and mandibular glands of Chinese [14,16], Syrian [4], European [9] and Djungarian hamsters [11,12], mice and rats [6,7]. As regards the striated duct, that of the parotid gland of the cotton rat was similar to those of Syrian, Djungarian and European hamsters, mice and rats.…”

Section: Mandibular Glandsupporting

confidence: 57%

“…In the present study, nerve terminals were observed in the acini of the parotid gland. Concerning the nerve terminals, there are several reports on the intra-acinar nerve terminals of the parotid gland [6,7,11,14]. The existence of nerve terminals in the acini may provide morphological evidence of a direct, fast-acting response of the parotid acinar cells.…”

Section: Mandibular Glandmentioning

confidence: 99%

“…The acinar cells of the parotid gland were positive to PAS but were negative for AB staining, and the mandibular acinar cells were positive to PAS and were stained by AB. The parotid acini consisted of serous cells that are PAS-positive and AB-negative in Syrian hamsters [4], Chinese hamsters [14], mice [10], rats [10], and seromucous cells have a PAS-and ABpositive nature in Djungarian hamsters [11] and ginea pigs [3]. As for the mandibular gland in rodent species, there are several reports describing that the acinar cells are of a seromucous type with a PAS-and ABpositive nature [2,8,12,13,16].…”

Section: Mandibular Glandmentioning

confidence: 99%

“…From these reports and our observations, we categorized the parotid acinar cells as serous and the mandibular acinar cells as seromucous in type. As for secretory granules, the parotid acinar cells of the cotton rat had one granule type unlike Chinese [14], Djungarian [11], European and Syrian hamsters [4,9] which have several granule types. The mandibular acinar cells of the cotton rat contained 2 kinds of granules unlike Chinese hamsters [16], Djungarian hamsters [12] and Japanese field voles [13] contain at least 4 kinds of granules.…”

Section: Mandibular Glandmentioning

confidence: 99%

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Fine Structure of the Parotid and Mandibular Glands of the Cotton Rat (Sigmodon hispidus)

et al. 2003

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Abstract:The parotid and mandibular glands of the cotton rat were examined by light and transmission electron microscopy. Parotid gland: Acinar cells were serous in nature, and contained electron-dense granules. Intercalated duct cells contained electron-dense granules. Striated duct cells had small granules of moderate and high electron densities. Mandibular gland: Acinar cells were seromucous in nature, and contained granules of low and moderate electron densities. Intercalated duct cells contained granules of moderate and high electron densities. Striated ducts were comprised of two portions -a secretory portion and a striated portion without granules. The secretory portion had many electrondense granules. A sexual dimorphism was obserbed in these granules, which were smaller and fewer in females than in males.

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Section: Mandibular Glandsupporting

confidence: 57%

Section: Mandibular Glandmentioning

confidence: 99%

Section: Mandibular Glandmentioning

confidence: 99%

Section: Mandibular Glandmentioning

confidence: 99%

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Fine Structure of the Parotid and Mandibular Glands of the Cotton Rat (Sigmodon hispidus)

et al. 2003

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Comparative ultrastructure of intercalated ducts in major salivary glands: a review

et al. 1998

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Secretion by striated ducts of mammalian major salivary glands: Review from an ultrastructural, functional, and evolutionary perspective

et al. 2001

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In addition to their role in electrolyte homeostasis, striated ducts (SDs) in the major salivary glands of many mammalian species engage in secretion of organic products. This phenomenon usually is manifested as the presence of small serous-like secretory granules in the apical cytoplasm of SD cells. The composition of these granules is largely unknown, except in the case of the cat and rat submandibular gland, where the granules have unequivocally been shown to contain kallikrein. In some species, the apical cytoplasm of SD cells contains variable numbers of vesicles, both spherical and elongated, that vary in appearance from 'empty' to moderately dense. In the rat parotid gland, lucent vesicles transport glycoproteins to the luminal surface where they are incorporated into the apical plasmalemma and the glycocalyx. There is a strong possibility that in various species some of these vesicles are involved in transcytosis of antibodies to the saliva from their source (plasma cells) in the surrounding connective tissue. In addition, vesicles may engage in transfer of growth factors from the saliva to the interstitium. In a few species, conventional SDs have been replaced by ducts that are wholly given over to secretion, i.e., they entirely lack basal striations; although such ducts occupy the histological position of conventional SDs, it is not clear whether they represent a new type of duct or merely are modifications of SDs. Broad-based comparisons of ultrastructural and other data about SDs offer some insight into evolutionary history of salivary glands and their role in the adaptive radiation of mammals. Evolutionary patterns emerged when we made interspecific comparisons across mammalian orders. Among the bats, there is a clear relationship between SD secretion and general categories of diet. Anat Rec 264: 2001.

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Fine Structue of the Parotid Gland of Djungarian Hamster (<I>Phodopus sungarvs</I>)

Cited by 7 publications

References 25 publications

Fine Structure of the Parotid and Mandibular Glands of the Cotton Rat (Sigmodon hispidus)

Fine Structure of the Parotid and Mandibular Glands of the Cotton Rat (Sigmodon hispidus)

Comparative ultrastructure of intercalated ducts in major salivary glands: a review

Secretion by striated ducts of mammalian major salivary glands: Review from an ultrastructural, functional, and evolutionary perspective

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