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Effects of thymosin β4 on wound healing of rat palatal mucosa

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The objective of the present study was to investigate the effect of thymosin β4 (Tβ4) on the wound healing of rat palatal (RP) mucosa and related cellular properties. Cell viability, adhesion and migration of primary cultured RP cells were observed in the presence of Tβ4 at various concentrations ranging from 1 to 1,000 ng/ml. The mRNA and protein expression of matrix metalloproteinase 2 (MMP2) and vascular endothelial growth factor (VEGF) in Tβ4-treated RP cells was assessed by quantitative polymerase chain reaction (RT-qPCR) and western blot analysis, respectively. For the in vivo assay, Tβ4 was applied to excisional wounds (3 mm in diameter) that were made in the center of the palate (n=6). Images of the wound areas were captured and assessed histologically one week after surgery. Tβ4 did not affect cell viability and adhesion, but RP cell migration was stimulated by Tβ4 at concentrations of 100 and 1,000 ng/ml. Tβ4 also increased the mRNA and protein expression of MMP2 and VEGF in RP cells. In the animal model, palatal wound closure was significantly enhanced in rats treated with Tβ4. The results of the present study indicated that Tβ4 promotes the wound healing of RP mucosa. Enhancement of RP cell migration and angiogenesis is likely to be involved in the promotion of wound healing.
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Document Type: Research Article

Affiliations: 1: Department of Dental Biomaterials Science and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea 2: Department of Medical Engineering, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea

Publication date: January 1, 2014

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  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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