Minimally invasive colorectal resection for benign pathology is associated with persistent proangiogenic plasma...

Area of Science:

• Vascular Biology
• Surgical Oncology
• Gastroenterology

Background:

• Minimally invasive colorectal resection for cancer elevates proangiogenic proteins for 3-4 weeks.
• Postoperative plasma from cancer patients stimulates endothelial cell behavior in vitro.
• It remains unknown if similar changes occur after resection for benign pathology.

Purpose of the Study:

• To assess plasma levels of angiopoetin-2, placental growth factor, and soluble vascular cell adhesion molecule-1 after minimally invasive colorectal resection for benign pathology.
• To evaluate the effects of postoperative plasma on in vitro endothelial cell proliferation, migration, and invasion.

Main Methods:

• Prospective collection of plasma samples from patients undergoing minimally invasive colorectal resection for benign conditions.
• ELISAs were used to measure plasma levels of specific proangiogenic proteins.
• In vitro endothelial cell assays assessed proliferation, migration, and invasion using preoperative and postoperative plasma.

Main Results:

• Plasma levels of angiopoetin-2, placental growth factor, and soluble vascular cell adhesion molecule-1 were significantly increased for 3-4 weeks postoperatively.
• Postoperative plasma significantly enhanced endothelial cell branch point formation, invasion, and migration compared to preoperative plasma.
• These changes were observed in patients undergoing resection for diverticulitis and benign polyps.

Conclusions:

• Minimally invasive colorectal resection for benign pathology induces persistent proangiogenic plasma alterations.
• These alterations are similar to those observed in patients with colorectal cancer.
• Surgical trauma, rather than the specific pathology, is likely responsible for these observed proangiogenic changes.