BACKGROUND: Adipocytes regulate blood vessel formation, and in turn endothelial cells promote preadipocyte differentiation through the expression of proangiogenic factors, such as vascular endothelial growth factor (VEGF)-A. Some adipocytokines and hormones also have an effect on vascular development. OBJECTIVES: Our objectives were to analyze the relationship between weight and circulating VEGF-A in morbidly obese subjects before and after bariatric surgery, and investigate the relationship between circulating VEGF-A and certain adipocytokines and hormones regulating adipocytes. METHODS: A total of 45 morbidly obese women and nine lean females were included in the study. Patients underwent bariatric surgery: vertical banded gastroplasty (n=17), gastric bypass (n=17), and biliopancreatic diversion (n=11). Serum samples for VEGF-A, adiponectin, leptin, ghrelin, and insulin were obtained preoperatively and 9-12 months after surgery. RESULTS: Obese patients showed significantly higher VEGF-A levels than controls (306.3+/-170.3 vs. 187.6+/-91.9 pg/ml; P=0.04), decreasing to 246.1+/-160.4 after surgery (P<0.001), with no differences among surgical procedures. In controls there was an inverse correlation between VEGF-A and ghrelin (r=-0.85; P<.01), but not in obese patients. Leptin and insulin concentrations were increased in obese patients, with a significant decrease shown after weight loss with surgery. Conversely, adiponectin concentrations were lower in obese patients, with a significant increase shown after weight loss with surgery. Ghrelin was higher in controls than obese patients, decreasing after gastric bypass and biliopancreatic diversion, but not after vertical banded gastroplasty. CONCLUSION: Serum VEGF-A levels are significantly higher in obese patients than in lean controls, decreasing after weight loss with bariatric surgery, behaving similarly to other hormones related to adipose mass like leptin and insulin.
BACKGROUND: Adipocytes regulate blood vessel formation, and in turn endothelial cells promote preadipocyte differentiation through the expression of proangiogenic factors, such as vascular endothelial growth factor (VEGF)-A. Some adipocytokines and hormones also have an effect on vascular development. OBJECTIVES: Our objectives were to analyze the relationship between weight and circulating VEGF-A in morbidly obese subjects before and after bariatric surgery, and investigate the relationship between circulating VEGF-A and certain adipocytokines and hormones regulating adipocytes. METHODS: A total of 45 morbidly obesewomen and nine lean females were included in the study. Patients underwent bariatric surgery: vertical banded gastroplasty (n=17), gastric bypass (n=17), and biliopancreatic diversion (n=11). Serum samples for VEGF-A, adiponectin, leptin, ghrelin, and insulin were obtained preoperatively and 9-12 months after surgery. RESULTS:Obesepatients showed significantly higher VEGF-A levels than controls (306.3+/-170.3 vs. 187.6+/-91.9 pg/ml; P=0.04), decreasing to 246.1+/-160.4 after surgery (P<0.001), with no differences among surgical procedures. In controls there was an inverse correlation between VEGF-A and ghrelin (r=-0.85; P<.01), but not in obesepatients. Leptin and insulin concentrations were increased in obesepatients, with a significant decrease shown after weight loss with surgery. Conversely, adiponectin concentrations were lower in obesepatients, with a significant increase shown after weight loss with surgery. Ghrelin was higher in controls than obesepatients, decreasing after gastric bypass and biliopancreatic diversion, but not after vertical banded gastroplasty. CONCLUSION: Serum VEGF-A levels are significantly higher in obesepatients than in lean controls, decreasing after weight loss with bariatric surgery, behaving similarly to other hormones related to adipose mass like leptin and insulin.
Authors: K S Burgdorf; A P Gjesing; N Grarup; J M Justesen; C H Sandholt; D R Witte; T Jørgensen; S Madsbad; T Hansen; O Pedersen Journal: Diabetologia Date: 2011-09-28 Impact factor: 10.122
Authors: Carmine Finelli; Maria Carmela Padula; Giuseppe Martelli; Giovanni Tarantino Journal: World J Gastroenterol Date: 2014-11-28 Impact factor: 5.742
Authors: Ana Tellechea; Antonios Kafanas; Ermelindo C Leal; Francesco Tecilazich; Sarada Kuchibhotla; Michael E Auster; Iraklis Kontoes; Jacqueline Paolino; Eugenia Carvalho; Leena Pradhan Nabzdyk; Aristidis Veves Journal: Int J Low Extrem Wounds Date: 2013-02-26 Impact factor: 2.057
Authors: H E Bays; B Laferrère; J Dixon; L Aronne; J M González-Campoy; C Apovian; B M Wolfe Journal: Int J Clin Pract Date: 2009-09 Impact factor: 2.503