OBJECTIVE: To examine the up-regulation of vascular endothelial growth factor (VEGF) expression by hypoxia, a crucial event leading to neovascularization, as the reduction in VEGF expression may facilitate minimization of adhesion development. DESIGN: Prospective experimental study. SETTING: University medical center. PATIENT(S): Five patients with adhesions undergoing laparotomy with excision of adhesions and normal peritoneum. INTERVENTION(S): Adhesion and normal peritoneal fibroblasts were treated with dichloroacetic acid (DCA) or NS-398 (a cyclooxygenase-2 [COX-2] inhibitor) for 24 to 48 hours. MAIN OUTCOME MEASURE(S): A real-time reverse transcriptase polymerase chain reaction (RT-PCR) to quantify relative changes in mRNA levels of VEGF from each treatment. RESULT(S): In both normal peritoneal and adhesion fibroblasts, VEGF mRNA was present with statistically significantly higher levels in adhesion fibroblasts (32%). The DCA treatment resulted in a statistically significant decrease in VEGF mRNA levels in adhesion (20%) and normal peritoneal (18%) fibroblasts. The NS-398 treatment resulted in a statistically significant decrease in VEGF mRNA levels in adhesion (25%) and normal peritoneal (16%) fibroblasts. CONCLUSION(S): Stimulation of aerobic metabolism by DCA or inhibition of COX-2 by NS-398 reduces VEGF expression. Angiogenesis, which is an integral component in the development of dense vascular adhesions, may be reduced by either COX-2 inhibitors or stimulation of aerobic metabolism by DCA.
OBJECTIVE: To examine the up-regulation of vascular endothelial growth factor (VEGF) expression by hypoxia, a crucial event leading to neovascularization, as the reduction in VEGF expression may facilitate minimization of adhesion development. DESIGN: Prospective experimental study. SETTING: University medical center. PATIENT(S): Five patients with adhesions undergoing laparotomy with excision of adhesions and normal peritoneum. INTERVENTION(S): Adhesion and normal peritoneal fibroblasts were treated with dichloroacetic acid (DCA) or NS-398 (a cyclooxygenase-2 [COX-2] inhibitor) for 24 to 48 hours. MAIN OUTCOME MEASURE(S): A real-time reverse transcriptase polymerase chain reaction (RT-PCR) to quantify relative changes in mRNA levels of VEGF from each treatment. RESULT(S): In both normal peritoneal and adhesion fibroblasts, VEGF mRNA was present with statistically significantly higher levels in adhesion fibroblasts (32%). The DCA treatment resulted in a statistically significant decrease in VEGF mRNA levels in adhesion (20%) and normal peritoneal (18%) fibroblasts. The NS-398 treatment resulted in a statistically significant decrease in VEGF mRNA levels in adhesion (25%) and normal peritoneal (16%) fibroblasts. CONCLUSION(S): Stimulation of aerobic metabolism by DCA or inhibition of COX-2 by NS-398 reduces VEGF expression. Angiogenesis, which is an integral component in the development of dense vascular adhesions, may be reduced by either COX-2 inhibitors or stimulation of aerobic metabolism by DCA.
Authors: Christoph Brochhausen; Volker H Schmitt; Constanze N E Planck; Taufiek K Rajab; David Hollemann; Christine Tapprich; Bernhard Krämer; Christian Wallwiener; Helmut Hierlemann; Rolf Zehbe; Heinrich Planck; C James Kirkpatrick Journal: J Gastrointest Surg Date: 2012-06 Impact factor: 3.452
Authors: Awoniyi O Awonuga; Jimmy Belotte; Suleiman Abuanzeh; Nicole M Fletcher; Michael P Diamond; Ghassan M Saed Journal: Reprod Sci Date: 2014-02-11 Impact factor: 3.060
Authors: Sara McMaken; Matthew C Exline; Payal Mehta; Melissa Piper; Yijie Wang; Sara N Fischer; Christie A Newland; Carrie A Schrader; Shannon R Balser; Anasuya Sarkar; Christopher P Baran; Clay B Marsh; Charles H Cook; Gary S Phillips; Naeem A Ali Journal: PLoS One Date: 2011-05-09 Impact factor: 3.240