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Huang, X. et al.

Expression of connexin43 in rat epithelial cells and fibroblasts.

To explore the role of connexin43 (Cx43) in gap junctional intercellular communication (GJIC) and propagated sensation along meridians, the expression of Cx43 in the rat epithelial cells and fibroblasts was studied both in vitro and in vivo. With the in vitro study, the rat epithelial cells and fibroblasts were cultured together, and the localization of Cx43 was detected by immunohistochemistry and indirect immunofluorescent cytochemistry and under confocal microscopy. And the expression of Cx43 on the surface of the cells was examined by flow cytometry. With the in vivo examination, 20 SD rats were randomized into control group (n = 10) and electrical acupuncture group (EA group, n = 10). EA ( 0.5-1. 5 V, 4-16 Hz , 30 min) was applied to "Zusanli" acupoint for 30 min at rat's hind paw, the localization of Cx43 was immunohistochemically detected. The immunohistochemical staining and indirect immunfluorescent cytochemistry showed that Cx43 was localized on the surface of the cells and in the cytoplasm. The relative expression level of Cx43 on the cellular membrane surfaces of the rat epithelial cells and fibroblasts, as determined by FACS, were 13.91% and 29.53% respectively. Our studied suggested that Cx43 might be involved in GJIC and propagated sensation along meridians.[1]

References

Expression of connexin43 in rat epithelial cells and fibroblasts. Huang, X., Huang, G., Zheng, C. Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban. (2005) [Pubmed]

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