Prevention of abdominal adhesion formation by thermosensitive PECE-hydrogel in a rat uterine horn model.
In this work, we investigated the efficacy of PECE-hydrogel in preventing postsurgical peritoneal adhesions in the rat uterine horn model. Standardized surgical traumas were applied to the peritoneum of the abdominal wall and the uterine horns. PECE hydrogel was applied to the two wound surfaces. Animals were euthanized at different times after surgery, and the gross necropsy findings were documented. Adhesion formation was assessed according to adhesion extent and adhesion severity, and the hydrogel degradation and healing of peritoneal wounds were observed. The remesothelialization was dynamically observed by scanning electron microscope. The results showed that none of the animals in the hydrogel-treated group (n = 12) developed adhesion. In contrast, all untreated animals (n = 12) had adhesions that could only be separated by sharp dissection (p < 0.001). The hydrogel could adhere to the peritoneal wounds and gradually disappear from the wounds within 7-9 days and transformed into viscous fluid being completely absorbed within 12 days. The injured parietal and visceral peritoneum was remesothelialized in about 7 and 9 days, respectively. This work confirmed that PECE hydrogel holds promise as a novel absorbable biomaterial for the reduction of postoperative adhesions after laparotomy.
Department of Gynecology and Obstetrics, Second West China Hospital, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People's Republic of China.
Bing
B
Yang
Chang
C
Yang Gong
Zhi
Z
Yong Qian
Xia
X
Zhao
Zheng
Z
Yu Li
Sheng
S
Tao Zhou
Xiao
X
Rong Qi
Qian
Q
Zhong
Feng
F
Luo
Yu
Y
Quan Wei
D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry / Q000494:pharmacology*; D005260:Female; D020100:Hydrogels / Q000737:chemistry / Q000494:pharmacology*; D008422:Materials Testing; D051381:Rats; D017208:Rats, Wistar; D013997:Time Factors; D014014:Tissue Adhesives / Q000737:chemistry / Q000494:pharmacology*; D014599:Uterus / Q000473:pathology / Q000601:surgery*; D014945:Wound Healing / Q000187:drug effects; D014947:Wounds and Injuries / Q000628:therapy
D001672:Biocompatible Materials; D020100:Hydrogels; D014014:Tissue Adhesives