2010 to till date: Dean of Research Studies & Senior Scientist, Madras Diabetes Research Foundation, Chennai, India 2007 to 2010: Assistant Director & Senior Scientist, Madras Diabetes Research Foundation, Chennai, India 1999 to August 2007: Senior Scientist, Madras Diabetes Research Foundation, Chennai 1996-1999: Faculty, Centre for Biotechnology, Anna University, Chennai 1991-1996: Post Doctoral Fellow, American Heart Association Affiliate, New Jersey Medical School, New Jersey, USA 1988-1991: Research Associate (CSIR), S.V.University, Tirupati 1986-1988: Senior Research Fellow (CSIR), S.V.University, Tirupati 1984-1986: Junior Research Fellow, S.V.University, Tirupati.

Disease Biology; Molecular pathogenesis of diabetes and its vascular complications including diabetic retinopathy; Vascular Biology and signaling studies on VSMC; Clinical significance and subclinical relevance of cellular and molecular alterations in metabolic diseases; Mechanisms of accelerated senescence (ageing) and telomere biology; Insulin signaling & Proteomics; Epigenetics; RNAi and miRNA, gut microbiome (metagenomics) and metabolomics aspects of diabetes, Stem cell applications including immunomodulation; Unraveling mechanisms of hyperglycemic memory, Calcium & Redox signaling, Proinflammation, Oxidative stress, ER stress, AGE pathway and biomarker(s) identification; Role of Endocrine Disruptors in diabetes; Bioprospecting herbal molecules; Complementary medicine including molecular benefits of Yoga; Non-invasive point-of-care (POC) clinical measures and medical devices.