TY - JOUR
T1 - A comparison of gene expression of decorin and MMP13 in hypertrophic scars treated with calcium channel blocker, steroid, and interferon
T2 - A human-scar-carrying animal model study
AU - Yang, Shih Yi
AU - Yang, Jui Yung
AU - Hsiao, Yen Chang
AU - Chuang, Shiow Shuh
N1 - Publisher Copyright:
© 2016 by the American Society for Dermatologic Surgery, Inc.
PY - 2017
Y1 - 2017
N2 - Background: The formation of hypertrophic scaring (HSc) is an abnormal wound-healing response. In a previous study, an animal model with human scar tissue implanted into nude mice (BALB/c) has been successfully established. The effects of verapamil as well as combination therapy with verapamil and kenacort have been studied and compared. Objective: To treat persistent hypertrophic scars, local injection of drugs composed of steroids, calcium channel blockers (CCBs), and interferon might be a good method. What is the best dose of the regimen and what are the mechanisms are also a worthwhile study. Materials and methods: Scar specimens were harvested from patients with HSc or Keloid resulting from burn injury, and then implanted to BALB/c-nu nude mice for 4 weeks. Before implantation, the specimen was either injected with or without drugs such as steroids (kenacort), CCBs (verapamil), and interferons (INFa2b), respectively. After the removal of implants, quantitative gene expressions of decorin and collagenase (MMP13) were measured using a real-time polymerase chain reaction to detect their mRNAs. Two way-ANOVA and Post Hoc were used for statistical analysis using the software SPSS 15.0. RESULTS All drug-treated groups increased the expressions of decorin and MMP13 in comparison with those in noninjected group (p < .001) in a dose-dependent manner. Comparing equal amounts of individual drugs, gene expression of decorin was increased with increasing injection amount, and the best result in low amount of injection (0.02 mL of each) was shown in the group injected with INFa2b followed by kenacort and verapamil. However, the results were changed while injection amount was up to 0.04 mL and the strongest decorin gene expression was found in kenacort injection. Regarding MMP-13 expression, low-amount injection (0.02 mL) of INFa2b has strongest gene expression followed by kenacort and verapamil, but in the largeamount regimes (0.04 mL), verapamil had strongest gene expression followed by INFa2b and kenacort. Conclusion: This study showed that the kenacort, verapamil, and INFa2b all inhibited HSc in a dosedependent manner through the evidence of gene expression of decorin and MMP13. In comparison with the injections between small amounts of drugs, INFa2b potentiated the strongest decorin and MMP13 expression. On the contrary, among the large-amount injection regimes, kenacrot was more effective on decorin expression as verapamil to MMP13 expression. To decrease side effects from the drugs and produce promising results for the clinical practice, it is suggested to maintain the dose of INFa2b along with an increased dose of verapamil for HSc improvement.
AB - Background: The formation of hypertrophic scaring (HSc) is an abnormal wound-healing response. In a previous study, an animal model with human scar tissue implanted into nude mice (BALB/c) has been successfully established. The effects of verapamil as well as combination therapy with verapamil and kenacort have been studied and compared. Objective: To treat persistent hypertrophic scars, local injection of drugs composed of steroids, calcium channel blockers (CCBs), and interferon might be a good method. What is the best dose of the regimen and what are the mechanisms are also a worthwhile study. Materials and methods: Scar specimens were harvested from patients with HSc or Keloid resulting from burn injury, and then implanted to BALB/c-nu nude mice for 4 weeks. Before implantation, the specimen was either injected with or without drugs such as steroids (kenacort), CCBs (verapamil), and interferons (INFa2b), respectively. After the removal of implants, quantitative gene expressions of decorin and collagenase (MMP13) were measured using a real-time polymerase chain reaction to detect their mRNAs. Two way-ANOVA and Post Hoc were used for statistical analysis using the software SPSS 15.0. RESULTS All drug-treated groups increased the expressions of decorin and MMP13 in comparison with those in noninjected group (p < .001) in a dose-dependent manner. Comparing equal amounts of individual drugs, gene expression of decorin was increased with increasing injection amount, and the best result in low amount of injection (0.02 mL of each) was shown in the group injected with INFa2b followed by kenacort and verapamil. However, the results were changed while injection amount was up to 0.04 mL and the strongest decorin gene expression was found in kenacort injection. Regarding MMP-13 expression, low-amount injection (0.02 mL) of INFa2b has strongest gene expression followed by kenacort and verapamil, but in the largeamount regimes (0.04 mL), verapamil had strongest gene expression followed by INFa2b and kenacort. Conclusion: This study showed that the kenacort, verapamil, and INFa2b all inhibited HSc in a dosedependent manner through the evidence of gene expression of decorin and MMP13. In comparison with the injections between small amounts of drugs, INFa2b potentiated the strongest decorin and MMP13 expression. On the contrary, among the large-amount injection regimes, kenacrot was more effective on decorin expression as verapamil to MMP13 expression. To decrease side effects from the drugs and produce promising results for the clinical practice, it is suggested to maintain the dose of INFa2b along with an increased dose of verapamil for HSc improvement.
UR - http://www.scopus.com/inward/record.url?scp=85010223678&partnerID=8YFLogxK
U2 - 10.1097/DSS.0000000000000990
DO - 10.1097/DSS.0000000000000990
M3 - 文章
C2 - 28009689
AN - SCOPUS:85010223678
SN - 1076-0512
VL - 43
SP - S37-S46
JO - Dermatologic Surgery
JF - Dermatologic Surgery
ER -