Intercellular junctions in salivary glands: Freeze-fracture and tracer studies of normal rat sublingual gland

Shimono, Masaki; Yamamura, Takeo; Fumagalli, Guido Francesco

doi:10.1016/s0022-5320(80)90065-9

Cited by 36 publications

(29 citation statements)

References 40 publications

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“…Preliminary experiment showed that CX2G-reactive spots were also absent in duct regions (unpublished data). These findings support the results of electron microscopic and freeze-fracturing studies by Shimono et al (1980). who showed the presence of GJs between acinar cells, between myoepithelial cells, and also between acinar cells and myoepithelial cells, but not between duct cells.…”

Section: Discussionsupporting

confidence: 92%

“…Many morphological investigations on GJs in salivary glands have been reported using electron microscopy and freeze-fracturing (Nagato and Tandler, 1986;Shimono et al, 1980;Nishihara, 1978;Sugiura, 1978;Young and Van Lennep, 1978). Moreover, Young and Van Lennep (1978) have suggested the presence of GJs between ductal cells.…”

Section: Discussionmentioning

confidence: 99%

“…who demonstrated the existence of lowresistance coupling between salivary gland cells of Drosophila. Ultrastructurally, it also has been shown that GJs occur between acinar cells, between myoepithelial cells, and between acinar cells and myoepithelial cells in rat salivary glands (Shimono et al, 1980(Shimono et al, ,1992Fumagalli and Shimono, 1990;Dunn and Revel, 1984;Tandler and Cohan, 1984).…”

Section: Introductionmentioning

confidence: 99%

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Differential expression of gap junction proteins connexin32 and 43 in rat submandibular and sublingual glands.

Muramatsu¹,

Hashimoto²,

Shimono³

1996

J Histochem Cytochem.

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We examined the expression and localization of the gap junction proteins connexin32 and 43 in rat submandibular and sublingual glands. Westem blot analysis with anti-conne~in32 and 43 antibodies showed bands of approximately 27 KD and 43 KD, respectively, in both glands. Immunofluorescence microscopy demonstrated the presence of reactive spots for connexin32 between acinar cells in both glands. The frequency of connexin32-positive spots in the submandibular glands was approximately equal to that in the sublingual glands. In contrast, reactive spots for connexin43 were observed at the periphery of the alveolar structures in both glands. The connexin43-positive spots in the sublingual glands were more frequent and larger than those in the sub-

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Differential expression of gap junction proteins connexin32 and 43 in rat submandibular and sublingual glands.

Muramatsu¹,

Hashimoto²,

Shimono³

1996

J Histochem Cytochem.

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show abstract

“…There have been many morphological investigations on GJs in the salivary glands [18,21,22,25]. GJs exist between acinar cells, between myoepithelial cells, and also between acinar cells and myoepithelial cells, but not between ductal cells [21].…”

Section: Discussionmentioning

confidence: 99%

“…GJs often are abundant in exocrine glands. It has been ultrastructurally confirmed that GJs are present between secretory cells in rat parotid (PGs) [6,8], submandibular [5], and sublingual glands [18,21,22] as well as in bat PGs [24].…”

Section: Introductionmentioning

confidence: 99%