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LETTER
Year : 2013  |  Volume : 5  |  Issue : 4  |  Page : 327  

Osteogenic action of anti-diabetic drug metformin in periodontal disease


Department of Periodontology, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India

Date of Web Publication19-Oct-2013

Correspondence Address:
Ashish Agarwal
Department of Periodontology, Institute of Dental Sciences, Bareilly, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0975-7406.120070

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How to cite this article:
Agarwal A. Osteogenic action of anti-diabetic drug metformin in periodontal disease. J Pharm Bioall Sci 2013;5:327

How to cite this URL:
Agarwal A. Osteogenic action of anti-diabetic drug metformin in periodontal disease. J Pharm Bioall Sci [serial online] 2013 [cited 2020 Jul 7];5:327. Available from: http://www.jpbsonline.org/text.asp?2013/5/4/327/120070

Sir,

Metformin (MF) a biguanide, is widely prescribed as the first line anti-diabetic agent for the treatment of type 2 diabetes mellitus. MF is considered an insulin-sensitizing drug, lowering glycemic level without increasing insulin secretion. Cortizo et al. investigated action of MF on the development of osteoblasts like cell lines and showed for the first time a direct osteogenic effect of MF of osteoblast in cell culture. [1]

Recent studies have demonstrated that MF is useful for improvement in clinical and radiological parameter of chronic periodontitis as compared with the placebo group in randomized clinical trials. [2] Histopathologic and micro-computed tomography findings, which suggest that MF may reduce inflammatory cell infiltration and alveolar bone loss in periodontal tissues, indicate that MF may exert a beneficial effect on periodontitis. [3]

It was reported that MF can induce MC3T3-E1 osteoblastic cells differentiation and bone matrix synthesis through adenosine 5'-monophosphate-activated protein kinase activation and subsequent induction of endothelial nitric oxide synthase and bone morphogenetic protein-2 (BMP-2) expression. [4] The action of MF on bone marrow mesenchymal progenitors BMP cells (BMPCs) has also been investigated and MF caused an osteogenic effect, suggesting a possible action in promoting a shift of BMPCs toward osteoblastic differentiation. In contrast, in vitro studies have shown no effect of MF on the osteogenic differentiation of bone marrow derived mesenchymal stem cells and matrix mineralization of both MC3T3-E1 cells and primary osteoblasts. A high concentration of MF (2 mm) even clearly inhibited osteoblast differentiation. [4]

Since MF benefits on fracture reduction and takes positive action on osteoblasts, it appears possible that this agent may have protective effects on bone loss. Recent in vivo and in vitro studies suggest that MF reduces receptor activator for nuclear factor-kappa B ligand and stimulates osteoprotegerin expression in osteoblasts, further inhibits osteoclast differentiation and prevents bone loss in ovariectomized rats. In a recent study, MF treatment of rats induced a significant reduction in alveolar bone loss compared with vehicle treated rats. A possible bone sparing and bone formative effect of MF has been shown to postulated as MF has been shown to significantly decrease the intracellular reactive oxygen species and apoptosis and also have a direct osteogenic effect on osteoblasts, which could be partially mediated through promotion of Runx 2 and insulin-like growth factor-1 expression. [5] Further more studies in periodontal environment should carry out for exploring the beneficial role of MF in periodontal therapy.

 
   References Top

1.Cortizo AM, Sedlinsky C, McCarthy AD, Blanco A, Schurman L. Osteogenic actions of the anti-diabetic drug metformin on osteoblasts in culture. Eur J Pharmacol 2006;536:38-46.  Back to cited text no. 1
    
2.Pradeep AR, Rao NS, Naik SB, Kumari M. Efficacy of varying concentrations of subgingivally delivered metformin in the treatment of chronic periodontitis: A randomized controlled clinical trial. J Periodontol 2013;84:212-20.  Back to cited text no. 2
    
3.Bak EJ, Park HG, Kim M, Kim SW, Kim S, Choi SH, et al. The effect of metformin on alveolar bone in ligature-induced periodontitis in rats: A pilot study. J Periodontol 2010;81:412-9.  Back to cited text no. 3
    
4.Kanazawa I, Yamaguchi T, Yano S, Yamauchi M, Sugimoto T. Metformin enhances the differentiation and mineralization of osteoblastic MC3T3-E1 cells via AMP kinase activation as well as eNOS and BMP-2 expression. Biochem Biophys Res Commun 2008;375:414-9.  Back to cited text no. 4
    
5.Mai QG, Zhang ZM, Xu S, Lu M, Zhou RP, Zhao L, et al. Metformin stimulates osteoprotegerin and reduces RANKL expression in osteoblasts and ovariectomized rats. J Cell Biochem 2011;112:2902-9.  Back to cited text no. 5
    



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