OBJECTIVE To compare cryopreservation of mature human oocytes with slow-rate freezing and vitrification and determine which is most efficient at establishing a pregnancy. DESIGN Prospective randomized. SETTING Academically affiliated, private fertility center. PATIENT(S) Consenting patients with concerns about embryo cryopreservation and more than nine mature oocytes at retrieval were ran...

Ovariectomy and ovarian tissue cryopreservation has the potential to preserve the natural fertility of cancer patients prior to sterilizing chemo- and radiotherapies. Ovarian tissue cryopreservation with the conventional slow-freezing method has yielded limited success, partly because of oocyte loss during freeze-thaw and subsequent transplant. Based on the high-efficiency vitrification Cryotop...

Cryopreservation of embryos and gametes has become an indispensible service for infertility treatment. Vitrification is now a prevalent technique for cryopreservation in assisted reproductive technology (ART) replacing, in many cases, conventional slow cooling methodology. Fertility preservation in female patients has become a very topical issue. Various malignant and nonmalignant diseases have...

Both sperm and embryo cryopreservation have become routine procedures in human assisted reproduction and oocyte cryopreservation is being introduced into clinical practice and is getting more and more widely used. Embryo cryopreservation has decreased the number of fresh embryo transfers and maximized the effectiveness of the IVF cycle. The data shows that women who had transfers of fresh and f...

www.expert-reviews.com ISSN 1747-4108 © 2009 Expert Reviews Ltd 10.1586/EOG.09.24 It has been almost 50 years since the feasibility of oocyte cryopreservation was successfully demonstrated in mice [1]. Since then, many cryopreservation protocols have been introduced and tested in a wide range of mammalian species. The era of oocyte cryopreservation began with the announcement of the possible su...

Objective To provide evidence-based recommendations to practicing physicians and others regarding the efficacy of oocyte cryopreservation (OC) for donor in vitro fertilization planned OC. Methods The American Society Reproductive Medicine conducted a literature search, which included systematic reviews, meta-analyses, randomized controlled trials, prospective retrospective com...

INTRODUCTION Today, oocyte donation has become well established, giving rise to thousands of children born worldwide annually. The introduction of oocyte cryopreservation through vitrification allows the introduction of egg banking, improving the efficiency and comfort of oocyte donation. Moreover, the vitrification technique can now enable autologous donation of oocytes to prevent future infer...

In women, around 10% of cancers occur in those younger than 45 years old. Although aggressive chemotherapy/radiotherapy and bone marrow transplantation can cure more than 90% of girls and young women affected by disorders requiring such treatment, the ovaries are very sensitive to cytotoxic drugs, especially to alkylating agents. Therefore, these treatments can result in premature ovarian failu...