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Creation of a female rabbit model for intrauterine adhesions using mechanical and infectious injury

Fang Liu, Zhi-Jun Zhu, Peng Li, Yuan-Li He
Journal of Surgical Research 2013, 183 (1): 296-303

BACKGROUND: Intrauterine adhesions (IUA) are associated with secondary amenorrhea, infertility, and recurrent pregnancy loss. An IUA animal model would contribute to research on the pathogenesis and pathologic changes of IUA and the exploration of new treatments.

MATERIALS AND METHODS: Eighty female rabbits were randomly divided into five groups: mechanical injury (16), infectious injury (16), dual injury (16), experimental control (16), and normal (16). Three methods were applied to establish the model: uterine curettage, uterine cavity left alone, lipopolysaccharide surgical suture in place for 48 h, and suture retention for 48 h after curettage. A sterile surgical suture was left in the uterine cavity for 48 h in the experimental control group. Histologic changes were monitored at 0, 24, 48, and 72 h and 7, 14, and 28 d after operation.

RESULTS: The experiments revealed that endometrium injured by simple curettage or infection could be repaired. Although endometrial regeneration was severely impaired by dual injury, the ratio of the area with endometrial stromal fibrosis to total endometrial area significantly increased (P < 0.01), and the number of endometrial glands was significantly reduced (P < 0.01).

CONCLUSIONS: The method of dual injury can establish a stable rabbit IUA model.


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