Background Ovarian tissue cryopreservation is an option for patients who require immediate gonagonadotoxic treatment of cancers. when there is insufficient time to conduct ovulation induction This procedure can be used in patients with genetic mutations with a high risk for premature ovarian failure.This strategy is the only option for fertility preservation in prepubertal girls or in women who...

Advances in the diagnosis and treatment of cancer have resulted in a growing population of adolescent and adult long-term survivors of malignancies with infertility problems due to induced premature ovarian failure. Although several options are currently available to preserve fertility in cancer patients, cryopreservation of ovarian tissue is the only option available for prepubertal girls and ...

Background: Follicular pool is reduced after transplantation of vitrified ovary. Therefore, methods should be improved to accelerate ovarian function revival and maintain follicular reserve. In this study hyaluronic acid hydrogel as a scaffold was used to improve restoration of ovarian oestrous cycle. Materials and Methods: 79 mature (~8 weeks) rats having normal estrous cycles were divided int...

the majority of cancer treatments are invasive. gonadal injuries cause reductions in fertility which results in lack of hope for conception in cancer patients and frustration for their partners. fortunately, current advancements in cryopreservation and transplantation sciences regarding fertility preservation lead to cryostorage of gonads and preservation prior to the onset of chemo- and radiot...

background: ovarian tissue transplantation is emerging technologies for fertility preservation. in addition, in vitro maturation (ivm) of oocytes retrieved from ovarian tissues may overcome the fertility defects in certain cases. objective: the aim was to evaluate the best site for ovarian tissue transplantation in mice. also, feasibility of ivm of oocytes retrieved from auto grafted ovarian ti...

Background Although ovarian tissue cryopreservation and transplantation is used for fertility preservation in patient undergoing cytotoxic treatments but obtaining good quality oocyte is still a debate. Xenotransplantation has been introduced as a reliable technique for better understanding of the transplantation conditions, but to achieve healthy embryos, the quality of obtained oocytes need t...

Background: The functional longevity of ovarian transplant at present is one of the most challenging questions regarding ovary transplantation. So, we used hyaluronic acid (HA) hydrogel scaffold with combination of VEGF and bFGF for restoration of cyclical ovarian function after ovarian tissue transplantation in a rat model. Materials and Methods: A total of 25 Wistar female rats weighing betwe...

In recent years, advances in the diagnosis and treatment of childhood, adolescent and adult cancer have significantly improved the survival rate and life expectancy of cancer patients. However, chemotherapy and radiotherapy treatments are gonadotoxic and may induce the loss of ovarian function and fertility with consequent premature ovarian failure (POF). A number of factors determine the level...

Cryopreservation of ovarian tissue has been proposed for storing gametes of young patients at high risk of premature ovarian failure. Autotransplantation has recently provided some promising results and is still the unique option to restore ovarian function from cryopreserved ovarian tissue in humans. In this article, we analyse data from the combined orthotopic and heterotopic transplantation ...