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LETTER TO THE EDITOR
Year : 2013  |  Volume : 17  |  Issue : 1  |  Page : 178

Evaluation of vildagliptin and fixed dose combination of vildagliptin and metformin on glycemic control and insulin dose over 3 months in patients with type 2 diabetes mellitus


1 Department of Medicine, Varun Hospital, Ghatkopar, Mumbai, Maharashtra, India
2 Sonal Clinic, Walkeshwar, Mumbai, Maharashtra, India

Date of Web Publication27-Feb-2013

Correspondence Address:
Paresh Ved
Varun Hospital, Ghatkopar, Mumbai
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2230-8210.107877

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How to cite this article:
Ved P, Shah S. Evaluation of vildagliptin and fixed dose combination of vildagliptin and metformin on glycemic control and insulin dose over 3 months in patients with type 2 diabetes mellitus. Indian J Endocr Metab 2013;17:178

How to cite this URL:
Ved P, Shah S. Evaluation of vildagliptin and fixed dose combination of vildagliptin and metformin on glycemic control and insulin dose over 3 months in patients with type 2 diabetes mellitus. Indian J Endocr Metab [serial online] 2013 [cited 2019 Nov 17];17:178. Available from: http://www.ijem.in/text.asp?2013/17/1/178/107877

Sir,

We thank Mundra for a detailed analysis of our paper, and for his attempt to improve the impact of our findings. [1] In our study, 152 subjects were on plain Vildagliptin while 148 were on a fixed dose combination of vildagliptin and metformin. The uptitration of the dose was based on the glycemic control achieved. There was no protocol followed for the uptitration of the dosages

A significant drop was reported in both the groups (on vildagliptin as well as vildagliptin and metformin combination). The baseline fasting plasma glucose in plain and combination groups was 195.61±57.91 and 194.26±54.56 mg% respectively, which came down to 121.84±27.52 and 128.11±32.33 mg% respectively. Also, the baseline postprandial glucose in plain and combination of 287.43±85.62 and 287.77±69.94 mg% came down to 165.60±34.00 and 178.67±39.65 mg% respectively. The HbA1c changes were significant: Values of 9.04±1.45 and 8.99±1.12% came down to levels of 7.61±1.04 and 7.69±0.99% respectively.

Dipeptidyl peptidase (DPP)-4 inhibitors are generally weight-neutral, although modest weight loss has been observed with the DPP-4 inhibitor, vildagliptin, in patients with relatively low baseline glycemia. The weight neutrality of vildagliptin likely results in part from its intrinsically low risk for hypoglycemia. Recent studies point to additional potential mechanisms. One study found that drug-naοve patients randomized to vildagliptin exhibited significantly lower chylomicron lipid and apolipoprotein levels than placebo patients, suggesting that vildagliptin may inhibit intestinal fat extraction. Another trial found that patients randomized to vildagliptin versus placebo experienced paradoxical postprandial increases in markers of fatty acid mobilization and oxidation, in conjunction with increased sympathetic stimulation. Elaboration of these and other pathways could further clarify the origins of the favorable weight profile of vildagriptin. [2]

Adverse event reporting was only kept for hypoglycaemia, which was not observed during the trial period in any of the group.

We agree with Dr. Mundra that we definitely need more randomized trials to further elucidate the role of DPP-IV inhibitors and their benefit in terms of cardiac, lipids and insulin sensitivity. [1]

 
   References Top

1.Mundra V. Letter to the editor in response to the study. Evaluation of vildagliptin and fixed dose combination of vildagliptin and metformin on glycemic control and insulin dose over 3 months in patients with type 2 diabetes mellitus. Ved and Shah; 2012.  Back to cited text no. 1
    
2.Foley JE, Jordan J. Weight neutrality with the DPP-4 inhibitor, vildagliptin: Mechanistic basis and clinical experience. Vasc Health Risk Manag 2010;6:541-8.  Back to cited text no. 2
    




 

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