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John L. Dart Library
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Wando Mount Pleasant Library
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Connexin 43 upregulation in burns promotes burn conversion through spread of apoptotic death signals.
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- Author(s): Feng, Jiajun1 (AUTHOR) ; Thangaveloo, Moogaambikai2 (AUTHOR); Ong, Yee Siang1 (AUTHOR); Chong, Si Jack1 (AUTHOR); Joethy, Janna-Vale1 (AUTHOR); Becker, David L.2,3 (AUTHOR)
- Source:
Burns (03054179). Sep2020, Vol. 46 Issue 6, p1389-1397. 9p.- Subject Terms:
*CONNEXIN 43; *HEAT shock proteins; *APOPTOSIS; *PROTEIN expression; *PROTEIN metabolism; *DISEASE progression; *RESEARCH; *FIBROBLASTS; *BURNS & scalds; *CELL membranes; *RESEARCH methodology; *CELL physiology; *MEDICAL cooperation; *EVALUATION research; *COMPARATIVE studies; *DERMIS; *MEMBRANE proteins - Source:
- Additional Information
- Abstract:
Background: Burn wounds continue to worsen after initial injury in a process known as burn conversion, which lasts about 3-5 days. It causes burn wounds to enlarge and deepen, leading to greater morbidity. Apoptosis is one of the factors contributing to the conversion of the zone of stasis into the zone of coagulation. Suppression of apoptosis has been associated with reducing burn conversion. Connexin 43 (Cx43) gap junctions facilitate the spread of apoptotic signals from dying cells to healthy neighbouring cells in injured tissues through the bystander effect.Objectives: The study is to understand the role of Cx43 in burn conversion.Methods: In our study, 15 burn tissue samples were arranged into three groups as early (beginning of burn conversion), intermediate (extensive burn conversion) and late (established burn conversion) burns.Results: We found a striking increase in the amount of Cx43 protein expressed in the dermal fibroblasts (identified with heat shock protein 47 (HSP47) staining) in the zone of stasis in early and intermediate burns. These dermal fibroblasts also express high levels of cleaved-Caspase 3 indicating on-going apoptosis.Conclusions: Our findings suggest that elevation of Cx43 may play an active role in burn conversion spreading apoptosis in the early and intermediate burn wound. [ABSTRACT FROM AUTHOR] - Abstract: Copyright of Burns (03054179) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Abstract:
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