J Korean Assoc Oral Maxillofac Surg.  2008 Aug;34(4):405-411.

The mRNA expression of MMP-1, TIMP-1, TGF-beta1 in gingival keratocytes from gingival hyperplasia induced by cyclosporine A

• Kang HS
• Lee JS
• Bing JH
• Park CJ
• Im JJ
• Hwang KG
• Shim KS

Abstract

PURPOSE
Cyclosporine A (CsA) is a versatile immunosuppresive agent used to prevent graft rejection syndrome and treat autoimmune disease. One of the major side effects associated with CsA is the abnormal gingival hyperplasia. The purpose of this study was to investigate the relationship between the mRNA expression of the MMP-1, TIMP-1, and TGF-beta1 and the concentration of CsA in cultured human gingival keratinocytes.
MATERIALS AND METHODS
Gingival keratocytes were obtained from gingival tissues of 4 healthy donors. The cultured gingival keratocytes were incubated with increasing concentrations of CsA (0-2000 ng/ml) for 24 hours and the expression of MMP-1, TIMP-1, and TGF-beta1 were determined by reverse transcription-polymerase chain reaction (RT-PCR).
RESULTS
The expressions of MMP-1 and TGF-beta1 were not significantly different according to the concentrations of CsA. The expression of TIMP-1 was significantly increased at the CsA concentration of 500 ng/ml.
CONCLUSION
We concluded that the gingival hyperplasia induced by CsA was more related with TIMP-1 than MMP-1 or TGF-beta1 on gingival collagen metabolism in patients treated with CsA.

Keyword

MMP-1; TIMP-1; TGF-beta1; cyclosporine A; gingival keratinocyte

MeSH Terms

Autoimmune Diseases
Collagen
Cyclosporine
Gingival Hyperplasia
Graft Rejection
Humans
Keratinocytes
RNA, Messenger
Tissue Donors
Tissue Inhibitor of Metalloproteinase-1
Transforming Growth Factor beta1
Collagen
Cyclosporine
RNA, Messenger
Tissue Inhibitor of Metalloproteinase-1
Transforming Growth Factor beta1