Endothelin-1 and Its Receptors ETA and ETB in Drug-Induced Gingival Overgrowth.

Abstract

BACKGROUND:

The purpose of this study was to study the expression of endothelin-1 (ET-1) and its receptors ETA and ETB in normal human gingiva and cyclosporin-induced gingival fibroblasts.

METHODS:

Gingival samples were collected from eight normal healthy individuals, eight patients with periodontitis, and eight patients with cyclosporin A (CsA)-induced gingival overgrowth. Total RNA was extracted from tissue samples, and reverse transcriptase-polymerase chain reaction was performed for ET-1, ETA , and ETB . ET-1 protein was estimated from the tissues by enzyme-linked immunosorbent assay. The expression of ET-1 and its receptors was also examined in gingival fibroblast cells treated with CsA.

RESULTS:

ET-1 mRNA expression was significantly higher in patients with CsA-induced gingival overgrowth (P <0.001) than in patients with periodontitis and the controls. ETA mRNA was expressed more than the ETB in all examined samples. In human gingival fibroblasts, ET-1 expression was increased with CsA incorporation compared to controls (P <0.001).

CONCLUSION:

These results suggest that CsA can modulate the expression of ET-1 in gingival fibroblasts and CsA-induced gingival overgrowth.

• Authors: S Tamilselvan, Surya Narayana Raju, D Loganathan, S Kamatchiammal, Georgie Abraham, R Suresh
• Journal: Journal of periodontology (J Periodontol) Vol. 78 Issue 2 Pg. 290-295 (Feb 2007) ISSN: 1943-3670 [Electronic] United States
• PMID: 29539178 (Publication Type: Journal Article)
• Copyright: © 2007 American Academy of Periodontology.