Cherlhyun Kim

Dankook University, Yŏng-dong, North Chungcheong, South Korea

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Publications (3)5.9 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Recently, many plastic surgeons have been using adipogenic-differentiated cell implantation for remodeling scars in patients. However, this technique is not a long-term solution because implanted cells disappear gradually. Therefore, we investigated a method to increase the grafted cell preservation rate by using an effective adjuvant, botulinum toxin. The adipogenic-differentiated cells were subcutaneously injected in the dorsal area of C57/BL6 mice with or without botulinum toxin. Two and six weeks later we analyzed the residual volume and confirmed the characteristics of the implanted cells by real-time RT-PCR and immunohistochemistry. Two and six weeks after transplantation we found that the residual volume of the transplantation site was higher in the botulinum toxin-treated group than in the untreated group. We also confirmed that the residual transplanted area has characteristics of adipogenic tissue by histological analysis. Next, to determine the mechanism related to the enhanced preservation rate of grafted cells via treatment with botulinum toxin, we performed immunohistochemical staining for the angiogenesis-related marker CD31. We found that CD31 expression was higher in the botulinum toxin-treated group than in the untreated group. We have shown that in vivo grafted adipocyte cell preservation can be enhanced by treatment with botulinum toxin as an adjuvant. We suggest that botulinum toxin further increases this graft preservation rate by enhancing angiogenesis.
    Aesthetic Plastic Surgery 08/2009; 33(5):722-9. · 1.26 Impact Factor
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    ABSTRACT: Transferrin is an iron carrier protein involved in iron uptake and the regulation of cell growth. Although highly proliferative cells express transferrin and its receptor, little is known about the role of transferrin in the cellular response to cytokine production. The non-iron-bound form of transferrin (apo-transferrin) was administered to human chronic myeloid leukemia cell line, K-562 cells to assess whether it could induce interleukin-18 (IL-18). Apo-transferrin enhanced IL-18 mRNA and protein and, moreover, IL-18 secretion was increased by treatment with apo-transferrin. In conclusion, apo-transferrin regulates IL-18 expression and we suggest that it is involved in cytokine production.
    Leukemia research 11/2008; 33(2):315-20. · 2.36 Impact Factor
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    ABSTRACT: IL-18 is a pleiotropic cytokine that is produced by many cancer cells. A recent report suggested that IL-18 plays a key role in regulating the immune escape of melanoma and gastric cancer cells. Thrombospondin (TSP-1) is known to inhibit angiogenesis in several cancers but some studies have reported that it stimulates angiogenesis in some cancers such as gastric cancer. IL-18 and TSP-1 are related to tumor proliferation and metastasis. This study investigated the relationship between IL-18 and TSP-1 in gastric cancer. RT-PCR and ELISA showed that after the cells had been treated with IL-18, the level of TSP-1 mRNA expression and TSP-1 protein production by IL-18 increased in both a dose- and time-dependent manner. The cells were next treated with specific inhibitors in order to determine the signal pathway involved in IL-18-enhanced TSP-1 production. IL-18-enhanced TSP-1 expression was blocked by SP600125, a c-Jun N-terminal kinase (JNK) specific inhibitor. In addition, Western blot showed that IL-18 enhanced the expression of phosphorylated JNK. Overall, these results suggest that IL-18 plays a key role in TSP-1 expression involving JNK.
    Biochemical and Biophysical Research Communications 07/2006; 344(4):1284-9. · 2.28 Impact Factor

Publication Stats

29 Citations
5.90 Total Impact Points

Institutions

  • 2009
    • Dankook University
      • Department of Animal Resource and Science
      Yŏng-dong, North Chungcheong, South Korea
  • 2006
    • Korea Food Research Institute
      Sŏul, Seoul, South Korea