Avaliação funcional do transplante autólogo heterotópico de ovários: estudo experimental em ratas / Functional assessment of autologous heterotopic transplant of ovaries: An experimental study on female mice

ABSTRACT

Introduction: Two facts have been constantly reported in the literature over the lastdecades, namely the increased number of reproductive-age women with cancer and theincreased age of primiparas. Both facts have encouraged studies on strategies to preserve women?s fertility. Objectives: To perform vaginal swab and morphological study to assess the functional viability of transplanted ovarian tissue. Methods: 30 female Wistar ablbinus mice with preserved hormonal function were randomly distributed in six groups G1. Control ? laparotomy; G2. Bilateral oophorectomy. G3. Bilateral oophorectomy with intact ovarian implant in the femoral region; G4. Bilateral oophorectomy, with sliced ovarian implant in the femoral region; G5. Bilateral oophorectomy with intact ovarian implant in the great epiploon; G6. Bilateral oophorectomy with sliced ovarian implantat in the great epiploon. Vaginal swab and removal for morphological study of the transplanted ovaries were carried out on the 35th and 120th days after surgery. Groups G3 and G6 were submitted to new vaginal swab on the 150th day. Results: All G1 mice had hormonal function. All G2mice remained in diestrus. The patterns of four G3 mice were consistent with estrus on the 35th day, and one mouse ovulated on the 120th day. Only one G4 mouse remained in diestrus after transplantation. All G5 had functioning ovary. Four G6 mice manifested hormonal function on the 35th day and only three on the 120th day. All the 150th-day swabs were classified as diestrus.Conclusions: Autologous ovarian transplant is technically feasible in female mice as much as vaginal swab for hormonal function assessment.