Search results
Results from the WOW.Com Content Network
Cryopreservation of ovarian tissue is of interest to women who want fertility preservation beyond the natural limit, or whose reproductive potential is threatened by cancer therapy, [1] for example in hematologic malignancies or breast cancer. [2]
The same study found that, of 65 patients referred to the program, 28% declined to undergo embryo, oocyte, or tissue cryopreservation. 9% were found not to be eligible for medical reasons. Of the remaining 41 patients, 85% chose to cryopreserve embryos, 10% chose to cryopreserve oocytes, and 5% chose to undergo ovarian tissue freezing. [9]
Ideally, the artificial ovary should contain follicles or oocytes obtained from ovarian tissue cryopreservation, as well as other ovarian cells to provide growth factors. [3] Isolated follicles are then transplanted (either at the normal site of the ovary or elsewhere in the body) in a delivery scaffold. [ 4 ]
Tissue samples like tumors and histological cross sections; Eggs in oocyte cryopreservation; Embryos at cleavage stage (that are 2, 4, 8 or 16 cells) or at early blastocyst stage, in embryo cryopreservation; Ovarian tissue in ovarian tissue cryopreservation; Plant seeds, callus, shoots tips or dormant buds are cryopreserved for conservation ...
Thus, ovarian tissue cryopreservation is an alternative to oocyte cryopreservation which requires a preceding controlled ovarian hyperstimulation. In vitro maturation allows oocytes from the ovarian tissue to be used directly for in vitro fertilization, as an alternative to surgical re-insertion of the tissue into the body. [14]
Assisted reproductive technology (ART) includes medical procedures used primarily to address infertility.This subject involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), cryopreservation of gametes or embryos, and/or the use of fertility medication.
TVOR is typically performed after ovarian hyperstimulation, where oocytes are pharmacologically stimulated to mature. When the ovarian follicles have reached a certain degree of development, induction of final oocyte maturation is performed, generally by an intramuscular or subcutaneous injection of human chorionic gonadotropin (hCG). [10]
An ova bank, or cryobank, or egg cell bank is a facility that collects and stores human ova, mainly from ova donors, primarily for the purpose of achieving pregnancies of either the donor, at a later time (i.e. to overcome issues of infertility), or through third party reproduction, notably by artificial insemination.