B K Mishra1, B D Banerjee2, V Agrawal3, S V Madhu4. 1. Department of Endocrinology, University College of Medical Sciences, University of Delhi, Delhi, India. 2. Department of Biochemistry, University College of Medical Sciences, University of Delhi, Delhi, India. 3. Department of Surgery, University College of Medical Sciences, University of Delhi, Delhi, India. 4. Department of Endocrinology, University College of Medical Sciences, University of Delhi, Delhi, India. drsvmadhu@gmail.com.
Abstract
PURPOSE: Peroxisome proliferator-activated receptor γ (PPARγ) gene is strongly associated with type 2 diabetes mellitus, as well as postprandial lipemia, and plays an important role in Wnt dependent adipogenesis in subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT). We aimed to study the expression of PPARγ gene in SAT and VAT to find out its correlation with postprandial hypertriglyceredemia and glucose intolerance. METHODS: Thirty subjects who were scheduled to undergo abdominal surgery were recruited in three groups (n = 10 in NGT, n = 10 in prediabetes, and n = 10 in T2DM). A standardized oral fat challenge was performed. Anthropometry, plasma glucose, HbA1c, and fasting serum insulin were also measured. SAT and VATs were collected during surgery for PPARγ gene expression studies by real-time PCR. RESULTS: PPARγ gene expression was 5.5-fold lower in T2DM and 1.7-fold lower in prediabetes as compared with NGT subjects in VAT. There was a significant negative correlation of expression of PPARγ gene in VAT {Tgauc (r = -0.57, p < 0.007), Peak Tg (r = -0.51, p < 0.01)} as well as in subcutaneous adipose tissue {Tgauc (r = -0.45, p < 0.02)} with PPTg responses measures. CONCLUSION: Reduced adipocyte expression of PPARγ gene and the resultant postprandial hypertriglyceredemia is associated with greater risk of diabetes and prediabetes.
PURPOSE: Peroxisome proliferator-activated receptor γ (PPARγ) gene is strongly associated with type 2 diabetes mellitus, as well as postprandial lipemia, and plays an important role in Wnt dependent adipogenesis in subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT). We aimed to study the expression of PPARγ gene in SAT and VAT to find out its correlation with postprandial hypertriglyceredemia and glucose intolerance. METHODS: Thirty subjects who were scheduled to undergo abdominal surgery were recruited in three groups (n = 10 in NGT, n = 10 in prediabetes, and n = 10 in T2DM). A standardized oral fat challenge was performed. Anthropometry, plasma glucose, HbA1c, and fasting serum insulin were also measured. SAT and VATs were collected during surgery for PPARγ gene expression studies by real-time PCR. RESULTS: PPARγ gene expression was 5.5-fold lower in T2DM and 1.7-fold lower in prediabetes as compared with NGT subjects in VAT. There was a significant negative correlation of expression of PPARγ gene in VAT {Tgauc (r = -0.57, p < 0.007), Peak Tg (r = -0.51, p < 0.01)} as well as in subcutaneous adipose tissue {Tgauc (r = -0.45, p < 0.02)} with PPTg responses measures. CONCLUSION: Reduced adipocyte expression of PPARγ gene and the resultant postprandial hypertriglyceredemia is associated with greater risk of diabetes and prediabetes.
Authors: Blanca E Ríos-González; Karla E Luévano-Ortega; Ana M Saldaña-Cruz; Juan R González-García; María Teresa Magaña-Torres Journal: J Genet Date: 2011-12-16 Impact factor: 1.166
Authors: Struan F A Grant; Gudmar Thorleifsson; Inga Reynisdottir; Rafn Benediktsson; Andrei Manolescu; Jesus Sainz; Agnar Helgason; Hreinn Stefansson; Valur Emilsson; Anna Helgadottir; Unnur Styrkarsdottir; Kristinn P Magnusson; G Bragi Walters; Ebba Palsdottir; Thorbjorg Jonsdottir; Thorunn Gudmundsdottir; Arnaldur Gylfason; Jona Saemundsdottir; Robert L Wilensky; Muredach P Reilly; Daniel J Rader; Yu Bagger; Claus Christiansen; Vilmundur Gudnason; Gunnar Sigurdsson; Unnur Thorsteinsdottir; Jeffrey R Gulcher; Augustine Kong; Kari Stefansson Journal: Nat Genet Date: 2006-01-15 Impact factor: 38.330
Authors: Pablo Perez-Martinez; Javier Delgado-Lista; Francisco Perez-Jimenez; Jose Lopez-Miranda Journal: Atheroscler Suppl Date: 2010-06 Impact factor: 3.235
Authors: Qiu Guo; Soumya P Sahoo; Pei-Ran Wang; Denise P Milot; Marc C Ippolito; Margaret S Wu; Joanne Baffic; Chhabi Biswas; Melba Hernandez; My-Hanh Lam; Neelam Sharma; Wei Han; Linda J Kelly; Karen L MacNaul; Gaochao Zhou; Ranjit Desai; James V Heck; Thomas W Doebber; Joel P Berger; David E Moller; Carl P Sparrow; Yu-Sheng Chao; Samuel D Wright Journal: Endocrinology Date: 2003-12-30 Impact factor: 4.736