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Human Reproduction, Vol. 16, No. 2, 353-356, February 2001
© 2001 European Society of Human Reproduction and Embryology

Cross-linked hyaluronate hydrogel prevents adhesion formation and reformation in mouse uterine horn model

Tomio Sawada1, Kazuhiko Tsukada1, Kiyoshi Hasegawa1, Yoshimasa Ohashi1, Yasuhiro Udagawa1 and Victor Gomel2,,3

1 Department of Obstetrics and Gynecology, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan and 2 Department of Obstetrics and Gynecology, Faculty of Medicine University of British Colombia, Vancouver Hospital and Health Sciences Centre, Vancouver BC, Canada

The aim of this study was to evaluate the efficacy of cross-linked hyaluronate hydrogel (HA gel) as an adjuvant for postoperative adhesion prevention, in a mouse uterine horn model. In experiment 1 uterine horns were abrased with iodine. HA gel was applied to the injured surface before closure in the treatment group. In experiment 2, after injuring the uterine horns, three stitches were placed at equal distances around the uterine horns to appose the injured medial surfaces of the two horns during healing. HA gel was inserted between the uterine horns in the treatment group. In experiment 3 prevention of adhesion reformation was assessed. After lysis of adhesions that were induced as in experiment 2, HA gel was introduced between the serosal surfaces of apposing uterine horns. Untreated animals served as controls in each experiment. Statistical analysis was carried out using Student's t-test. The adhesion score was significantly lower in the HA gel group on the 14th day compared with controls in all the experiments: in experiment 1, 0.3 ± 0.4 versus 1.7 ± 1.2; in experiment 2, 0.9 ± 1.0 versus 2.6 ± 0.5; and in experiment 3, 1.5 ± 0.9 versus 2.2 ± 0.6 respectively. Cross-linked HA gel significantly reduced de-novo adhesions (P < 0.03) and adhesion reformation (P < 0.03).

Key words: adhesion prevention/adhesion reformation/hyaluronate hydrogel/mouse uterine horn model/reproductive surgery

3 To whom correspondence should be addressed at: Department of Obstetrics and Gynecology, Fujita Health University, School of Medicine, 1–98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan 470-1192.


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