Abstract:
:Nonvascularized fat grafting is a valuable technique for soft tissue reconstruction but poor survival of fat in the host environment remains a problem. A process known as cell-assisted transfer is used to enhance fat graft retention by adding stromal vascular fraction, an adipose-derived stem cell (ASC) rich content to lipoaspirate. We have recently shown that the use of melatonin, a reactive oxygen species scavenger, protects human ASCs from hydrogen peroxide-induced oxidative stress and cell death in vitro but its role as a pharmacological adjunct in clinical fat grafting has not been studied. Herein, the effect of melatonin was examined on human ASCs in vitro using survival and functional assays including the MTT assay, CellTox Green assay, monolayer scratch assay as well as a human cytokine chemoluminescence, and tumour necrosis factor-α assay. Further, the effect of melatonin-treated fat grafts was tested in vivo with a murine model. Haematoxylin and eosin staining, perilipin and CD31 immunostaining were performed with morphometric analysis of adipose tissue. The results demonstrate that, in vitro, the addition of melatonin to ASCs significantly improved their cell-viability, promoted cell migration and preserved membrane integrity as compared to controls. In addition, it induced a potent anti-inflammatory response by downregulating acute inflammatory cytokines particularly tumour necrosis factor-α. For the first time, it is demonstrated in vivo that melatonin enhances fat graft volume retention by reducing inflammation and increasing the percentage of adipose volume within fat grafts with comparable volumes to that of cell-assisted lipotransfer. Based on these novel findings, melatonin may be a useful pharmacological adjunct in clinical fat grafting.
journal_name
J Tissue Eng Regen Medjournal_title
Journal of tissue engineering and regenerative medicineauthors
Tan SS,Zhan W,Poon CJ,Han X,Marre D,Boodhun S,Palmer JA,Mitchell GM,Morrison WAdoi
10.1002/term.2463subject
Has Abstractpub_date
2018-02-01 00:00:00pages
382-392issue
2eissn
1932-6254issn
1932-7005journal_volume
12pub_type
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journal_title:Journal of tissue engineering and regenerative medicine
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更新日期:2012-01-01 00:00:00
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journal_title:Journal of tissue engineering and regenerative medicine
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更新日期:2018-02-01 00:00:00
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更新日期:2012-05-01 00:00:00
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