Murine peritoneal injury and de novo adhesion formation caused by oxidized-regenerated cellulose (Interceed [TC7]) but not expanded polytetrafluoroethylene (Gore-Tex Surgical Membrane)
A F Haney , E Doty
Author affiliations (2)
Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710.
To evaluate the impact of the materials contained in the available adhesion prevention barriers on the peritoneum.
STUDY DESIGN, SETTING,
Patients
A murine paradigm was used, placing oxidized-regenerated cellulose (Interceed [TC7]) and expanded polytetrafluoroethylene (PTFE; Gore-Tex Surgical Membrane) in the peritoneal cavity for intervals up to 14 days.
INTERVENTIONS AND
Main Outcome Measures
The appearance of the peritoneum on scanning and transmission electron microscopy and the presence of de novo adhesions were the end-points used.
Results
Oxidized-regenerated cellulose caused localized sloughing of the mesothelial cell layer and leukocyte infiltration of the deeper tissue leading to the formation of adhesions to the bowel and liver in 58% of the animals. The surface of the oxidized-regenerated cellulose-injured peritoneum healed in 5 to 7 days. Neither peritoneal injury nor adhesions were noted in sham-operated animals or animals with PTFE.
Conclusions
Oxidized-regenerated cellulose but not PTFE has a localized injurious effect on the peritoneum of the mouse, resulting in de novo adhesions. The impact of the barrier material itself on normal peritoneum may be an important consideration in designing surgical barriers for the prevention of postoperative adhesions.
Interceed peritoneal injury de novo adhesion formation, oxidized regenerated cellulose peritoneal damage mesothelial, Gore-Tex PTFE no peritoneal injury adhesion prevention, Haney Doty adhesion barrier peritoneal injury murine model, Interceed TC7 versus Gore-Tex peritoneal safety comparison, adhesion barrier material peritoneal toxicity scanning electron microscopy, oxidized regenerated cellulose mesothelial sloughing leukocyte infiltration, de novo adhesion formation surgical barrier material, expanded polytetrafluoroethylene peritoneal safety adhesion prevention, adhesion prevention barrier peritoneal biocompatibility study
PMID 1730318 1730318 DOI 10.1016/s0015-0282(16)54802-x 10.1016/s0015-0282(16)54802-x
Cite this article
Haney, A. F., & Doty, E. (1992). Murine peritoneal injury and de novo adhesion formation caused by oxidized-regenerated cellulose (Interceed [TC7]) but not expanded polytetrafluoroethylene (Gore-Tex Surgical Membrane). Fertility and sterility, 57(1), 202-208. https://doi.org/10.1016/s0015-0282(16)54802-x
Haney AF, Doty E. Murine peritoneal injury and de novo adhesion formation caused by oxidized-regenerated cellulose (Interceed [TC7]) but not expanded polytetrafluoroethylene (Gore-Tex Surgical Membrane). Fertil Steril. 1992;57(1):202-208. doi:10.1016/s0015-0282(16)54802-x
Haney, A. F., and E. Doty. "Murine peritoneal injury and de novo adhesion formation caused by oxidized-regenerated cellulose (Interceed [TC7]) but not expanded polytetrafluoroethylene (Gore-Tex Surgical Membrane)." Fertility and sterility, vol. 57, no. 1, 1992, pp. 202-208.
To compare the impact of expanded polytetrafluoroethylene (PTFE; Gore-Tex Surgical Membrane; W. L. Gore & Associates, Inc., Flagstaff, AZ) and oxidized regenerated cellulose (Interceed TC7, Johnson & Johnson Medical, Inc., Arlington, TX) on the development of postsurgical adhesions. A multicenter, nonblinded, randomized clinical trial. University medical centers. Each barrier was allocated randomly to the left or right sidewall of every patient. Thirty-two women with bilateral pelvic sidewall adhesions undergoing reconstructive surgery and second-look laparoscopy. Adhesion score (on a 0- to 11-point scale), the area of adhesion (cm2), and the likelihood of no adhesions. The use of both barriers was associated with a lower adhesion score and area of adhesion postoperatively. However, those sidewalls covered with PTFE had a significantly lower adhesion score (0.97 +/- 0.30 versus 4.76 +/- 0.61 points, mean +/- SEM) and area of adhesion (0.95 +/- 0.35 versus 3.25 +/- 0.62 cm2). Overall, more sidewalls covered with PTFE had no adhesions (21 versus 7) and, when adhesions were present on the contralateral sidewall, the number of sidewalls covered with PTFE without adhesions was greater than those covered with oxidized regenerated cellulose (16 versus 2). Expanded polytetrafluoroethylene was associated with fewer postsurgical adhesions to the pelvic sidewall than oxidized regenerated cellulose.
To evaluate the ability of the two currently available surgical barriers, oxidized regenerated cellulose and expanded-polytetrafluoroethylene (PTFE), to prevent postsurgical adhesions.
Murine uterine horns were approximated in the midline and the contacting uterine surfaces injured by electrocautery, cutting, and scratching, with and without barriers interposed. Sham-operated and experimental animals had adhesions assessed visually and histologically 7 days postoperatively. In another group, adhesions were created and then lysed 7 days later with barriers interposed. Readhesion formation was assessed 14 days after lysis with the PTFE being removed 7 days after lysis.
Adhesions occurred at 58.5% of the electrocautery sites without barriers, 100% of the readhesion sites with recautery for hemostasis, and 92% of the recautery sites without hemostasis. None of the sham-operated sites developed adhesions. When oxidized regenerated cellulose was interposed, adhesions were observed at 36% of uninjured uterine horn sites, 62% with single and 92% with double electrocautery injuries and 90% of the reformation sites. The PTFE did not cause adhesions in uninjured controls and completely prevented adhesion formation and reformation, regardless of the type of injury or whether hemostasis was achieved. A thin cellular membrane, continuous with the uterine serosa, enveloped the PTFE. Expanded-polytetrafluoroethylene, but not oxidized regenerated cellulose, prevents adhesion formation and reformation in this murine uterine horn model. Additionally, oxidized regenerated cellulose was adhesiogenic even without surgical injury.
To evaluate the effects of Ringer's lactate instillation, Interceed(TC7) (Johnson and Johnson Medical, Inc., New Brunswick NJ), and Gore-Tex Surgical Membrane (W. L. Gore and Associates, Inc., Flagstaff, AZ) in a rat uterine horn model. Rats were in a conventional laboratory setting. Sprague-Dawley white rats, weighing 225 to 250 g. The left uterine horn was subjected to a standardized lesion by serosal denudation and devascularization. The rats were randomly assigned into control group, Interceed(TC7) group, Gore-Tex group, and Ringer's lactate group. Degree of adhesions was evaluated 2 weeks after the initial surgery. Adhesion score after Ringer's lactate instillation was significantly lower than those of control, Interceed(TC7), and Gore-Tex groups. Gore-Tex was associated with less adhesion formation than control. No difference was found in the adhesion formation between the Interceed(TC7) group and the control group. Confirming our previous observations, Ringer's lactate instillation is effective in decreasing adhesion formation. Gore-Tex reduces adhesion formation, but its efficacy is inferior to those of Ringer's lactate. Contrary to previous reports, Interceed(TC7) is ineffective in our animal model.
Adhesion re-formation after a reproductive operation, particularly involving the pelvic sidewall, is a prominent cause of failure in the surgical treatment of infertility. This study was done to evaluate the impact of standard microsurgery through laparotomy and the additional benefit of an oxidized regenerated cellulose adhesion barrier (INTERCEED [TC7] Absorbable Adhesion Barrier [Ethicon Inc.]), in reducing pelvic sidewall adhesion re-formation. One hundred and thirty-four patients with bilateral pelvic sidewall adhesions undergoing adhesiolysis by standard microsurgical techniques through laparotomy were treated during a prospective randomized trial involving 13 centers. After adhesiolysis, the deperitonealized surface of one pelvic sidewall was randomly assigned to be covered with INTERCEED Barrier, the contralateral sidewall serving as control. A second-look laparoscopy was performed ten days to 14 weeks postoperatively. Microsurgical adhesiolysis alone resulted in 24 percent of the sidewalls becoming free of adhesions and a 55.6 percent reduction in the area of adherent peritoneum. With microsurgery alone, 60 and 39 percent of adhesions initially characterized as filmy or severe, respectively, were not seen at second-look laparoscopy. The use of INTERCEED Barrier increased the incidence of adhesion-free sidewalls twofold. The treatment was also associated with a statistically significant reduction in the area of peritoneum affected by adhesion re-formation, compared with the control wall. Of the adhesions originally graded as severe, 61 percent of those treated with INTERCEED Barrier did not re-form at all. When evaluated on filmy adhesions, the use of the barrier was associated with a 72 percent reduction in adhesion re-formation. A measurable reduction in adhesion re-formation was found, depending on the initial adhesion type, with microsurgery alone. The addition of INTERCEED Barrier further reduced the incidence, extent and severity of postoperative adhesion re-formation. In this study, 90 percent of the patients benefited from the use of INTERCEED Barrier.