BACKGROUND Oocyte vitrification is widely used throughout the world, but its clinical efficacy is inconsistent and depends on the vitrification media. This study compared the developmental potential and clinical results of in vivo matured oocytes cryopreserved with different vitrification media. METHODS This retrospective study involved vitrified-warmed oocytes at one in vitro fertilization l...

The aim of the present study was to investigate the effects of centrifugation pretreatment on the viability and nuclear status of porcine in vitro matured (IVM) oocytes and on the developmental competence of in vitro fertilized (IVF) oocytes (zygotes) after cryopreservation by vitrification (Solid Surface Vitrification; SSV). Mature oocytes having the first polar body after IVM and zygotes havi...

Background: Vitrification of oocyte is one of the most important topics in the field of assisted reproductive techniques (ART). Considering the importance of oocyte vitrification in clinics, in the present study the effect of vitrification on mouse oocytes survivale rate and apoptosis by cryotop were investigated. Materials and Methods: 200 GV oocytes and 200 MII oocytes were obtained respectiv...

Background: Ovarian tissue cryopreservation is a feasible method to preserve female reproductive potential, especially in young patients with cancer or in women at risk of premature ovarian failure. Vitrification has recently emerged as a new trend for biological specimen preservation. On the other hand, gene expression that changes during vitrification can influence oocyte maturation and need ...

Mesenchymal stem cells (MSCs) are one of the most promising adult stem cells for clinical application in a cell therapy. The development of large-scale cryopreservation techniques, such as vitrification, for MSCs is a prerequisite for clinical therapies. Dimethyl sulfoxide (DMSO) and ethylene glycol (EG) are two types of cryoprotectants widely used for cell vitrification. However, the effects o...

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...

BACKGROUND An estimated 3.5 million children have been born to date using assisted reproduction technologies. We reviewed the data in order to evaluate current knowledge of medical outcome for IVF/ICSI children born after cryopreservation, slow freezing and vitrification of early cleavage stage embryos, blastocysts and oocytes. METHODS A systematic review was performed. We searched the PubMed...

OBJECTIVE To investigate the effect of the dimethyl sulfoxide (DMSO) and EFS-40 during vitrification on the expression of angiogenic factors in vitrified mouse ovarian tissue. METHODS The ovarian tissues were obtained from 5 or 6 weeks aged ICR mouse. Ovarian tissues were divided into four groups: ovarian tissue without cryopreservation (control, group I), ovarian tissue vitrified with 15% DM...

Precision-cut tissue slices of both hepatic and extra-hepatic origin are extensively used as an in vitro model to predict in vivo drug metabolism and toxicity. Cryopreservation would greatly facilitate their use. In the present study, we aimed to improve (1) rapid freezing and warming (200 degrees C/min) using 18% Me(2)SO as cryoprotectant and (2) vitrification with high molarity mixtures of cr...

This study was carried out to establish an appropriate condition for the efficient cryopreservation of the mouse pronuclear embryo. In vitro cryopreservation of pronuclear embryos was carried out by slow freezing or vitrification methods and development rate of 2-cell, blastocyst and hatched blastocyst was measured as well as survival rate of the thawed pronuclear embryo. After slow freezing, v...