scholarly journals Vitrification of in vitro matured oocytes collected from antral follicles at the time of ovarian tissue cryopreservation

2011 ◽  
Vol 9 (1) ◽  
pp. 150 ◽  
Author(s):  
Giovanna Fasano ◽  
Federica Moffa ◽  
Julie Dechène ◽  
Yvon Englert ◽  
Isabelle Demeestere
Keyword(s):  
Ovarian Tissue ◽  
Ovarian Tissue Cryopreservation ◽  
Antral Follicles ◽  
Tissue Cryopreservation

scholarly journals Successful in vitro culture of pre-antral follicles derived from vitrified murine ovarian tissue: oocyte maturation, fertilization, and live births

Reproduction ◽  
2011 ◽  
Vol 141 (2) ◽  
pp. 183-191 ◽  
Author(s):  
Xiaoqian Wang ◽  
Sally Catt ◽  
Mulyoto Pangestu ◽  
Peter Temple-Smith
Keyword(s):  
Cancer Patients ◽  
Oocyte Maturation ◽  
Ovarian Tissue ◽  
Blastocyst Stage ◽  
Ovarian Tissue Cryopreservation ◽  
Antral Follicles ◽  
Live Births ◽  
And Function ◽  
Tissue Cryopreservation

Cryopreservation of ovarian tissue is an important option for preserving the fertility of cancer patients undergoing chemotherapy and radiotherapy. In this study, we examined the viability and function of oocytes derivedin vitrofrom pre-antral follicles as an alternative method for restoring fertility. Pre-antral follicles (specified as secondary follicle with a diameter around 100–130 μm) were mechanically isolated from vitrified-warmed and fresh adult mouse ovarian tissues and cultured for 12 days followed by an ovulation induction protocol at the end of this period to initiate oocyte maturation. Oocytes were then released from these follicles, fertilizedin vitro, and cultured to the blastocyst stage and vitrified. After storage in liquid nitrogen for 2 weeks, groups of vitrified blastocysts were warmed and transferred into pseudo-pregnant recipient females. Although most of the isolated mouse pre-antral follicles from fresh (79.4%) and vitrified (75.0%) ovarian tissues survived the 12-dayin vitroculture period, significantly fewer mature oocytes developed from vitrified-warmed pre-antral follicles than from the fresh controls (62.2 vs 86.4%,P<0.05). No difference was observed in embryo cleavage rates between these two groups, but the proportion of embryos that developed into blastocysts in the vitrification group was only half that of the controls (24.2 vs 47.2%,P<0.05). Nevertheless, live births of healthy normal pups were achieved after transfer of vitrified blastocysts derived from both experimental groups. This study shows that successful production of healthy offspring using anin vitrofollicle culture system is feasible, and suggests that this procedure could be used in cancer patients who wish to preserve their fertility using ovarian tissue cryopreservation.

scholarly journals Function of Cryopreserved Cat Ovarian Tissue after Autotransplantation

Animals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1065 ◽  
Author(s):  
Janice M. V. Vilela ◽  
Ellen C. R. Leonel ◽  
Liudimila P. Gonçalves ◽  
Raísa E. G. Paiva ◽  
Rodrigo S. Amaral ◽  
...  
Keyword(s):  
Subcutaneous Tissue ◽  
Ovarian Tissue ◽  
Fibrous Tissue ◽  
Ovarian Tissue Cryopreservation ◽  
Post Transplantation ◽  
Fresh Tissue ◽  
Tissue Samples ◽  
Antral Follicles ◽  
Ovarian Cortex ◽  
Tissue Cryopreservation

The aim of this study was to assess a slow-freezing protocol of cat ovarian tissue cryopreservation using autotransplantation. Four adult queens were ovariohysterectomized and the ovaries were fragmented and cryopreserved. After one week, the grafts were thawed and autografted to the subcutaneous tissue of the dorsal neck of each queen, then randomly removed after 7, 14, 28, 49, and 63 days after transplantation. Percentages of morphologically normal primordial and growing follicles (MNFs) were 88% and 97%, respectively, in fresh tissue samples (fresh controls), and 74% and 100%, respectively, immediately after thawing (cryo D0). No MNFs were found after 49 days of transplantation. In both fresh control and cryo D0 fragments, granulosa cells were frequently in proliferation. Two morphologically normal antral follicles were detected in one queen on Day 28 post-transplantation. Connective tissue fibers increased, suggesting replacement of active ovarian cortex by fibrous tissue. Tissue vascularization was observed at 7 days after grafting, and wide blood vessels were clearly visible on Days 49 and 63. In conclusion, although follicular survival was low after cryopreservation and grafting of cat ovarian tissue, follicles were able to develop up to the antral stage, which is an encouraging outcome.

Female fertility preservation strategies: cryopreservation and ovarian tissuein vitroculture, current state of the art and future perspectives

Zygote ◽  
2016 ◽  
Vol 24 (5) ◽  
pp. 635-653 ◽  
Author(s):  
M.A. Filatov ◽  
Y.V. Khramova ◽  
M.V. Kiseleva ◽  
I.V. Malinova ◽  
E.V. Komarova ◽  
...  
Keyword(s):  
Fertility Preservation ◽  
State Of The Art ◽  
Ovarian Tissue ◽  
Female Fertility ◽  
Ovarian Tissue Cryopreservation ◽  
Future Perspectives ◽  
Current State ◽  
Female Fertility Preservation ◽  
Tissue Cryopreservation

SummaryIn the present review, the main strategies of female fertility preservation are covered. Procedures of fertility preservation are necessary for women who suffer from diseases whose treatment requires the use of aggressive therapies, such as chemotherapy and radiotherapy. These kinds of therapy negatively influence the health of gametes and their progenitors. The most commonly used method of female fertility preservation is ovarian tissue cryopreservation, followed by the retransplantation of thawed tissue. Another approach to female fertility preservation that has been actively developed lately is the ovarian tissuein vitroculture. The principal methods, advantages and drawbacks of these two strategies are discussed in this article.

Strategies to Preserve and Optimize Fertility for Patients with Endometriosis

2017 ◽  
Vol 9 (2) ◽  
pp. 98-104 ◽  
Author(s):  
Natalia Llarena ◽  
Rebecca Flyckt
Keyword(s):  
In Vitro Fertilization ◽  
Medical Therapy ◽  
Ovarian Reserve ◽  
Chronic Pelvic Pain ◽  
Ovarian Tissue ◽  
Ovarian Tissue Cryopreservation ◽  
Vitro Fertilization ◽  
Endometriosis Surgery ◽  
Tissue Cryopreservation

Endometriosis is commonly associated with dysmenorrhea, chronic pelvic pain, and infertility. When medical therapy fails, surgery is often recommended; unfortunately, endometriosis surgery can adversely impact fertility and ovarian reserve in women desiring future childbearing. This review will focus on mechanisms of infertility in endometriosis patients as well as strategies for optimizing fertility in endometriosis patients when surgery is indicated. In addition, fertility preserving techniques such as oocyte and ovarian tissue cryopreservation as well as issues relevant to in vitro fertilization for patients with endometriosis are discussed.

scholarly journals Follicle Rescue From Prepubertal Ovaries After Recent Treatment With Cyclophosphamide—An Experimental Culture System Using Mice to Achieve Mature Oocytes for Fertility Preservation

2021 ◽  
Vol 11 ◽  
Author(s):  
Xia Hao ◽  
Amandine Anastácio ◽  
Laia Viñals-Ribé ◽  
Ana Santamaria Lacuesta ◽  
Christina Diakaki ◽  
...  
Keyword(s):  
Fertility Preservation ◽  
Ovarian Tissue ◽  
Young Patients ◽  
Ovarian Tissue Cryopreservation ◽  
Ovarian Tissue Transplantation ◽  
Oocyte Competence ◽  
Patients With Cancer ◽  
Tissue Cryopreservation ◽  
Selection Of

Ovarian tissue cryopreservation is the only feasible method for fertility preservation in prepubertal girls that will undergo gonadotoxic chemotherapy. To date, the only clinical use of cryopreserved tissue is by a later tissue retransplantation to the patient. Clinical challenges in fertility preservation of very young patients with cancer include time constraints that do not allow to retrieve the tissue for cryopreservation before starting chemotherapy and the preclusion of future ovarian tissue transplantation due to the risk of reintroduction of malignant cells in patients with systemic diseases. To overcome these two challenges, we investigated using an experimental model the feasibility of retrieving secondary follicles from ovaries of prepubertal mice after cyclophosphamide (CPA) treatment in increasing doses of 50, 75, and 100 mg/kg. The follicles were thereafter cultured and matured in vitro. The main outcomes included the efficiency of the method in terms of obtained matured oocytes and the safety of these potentially fertility preservative procedures in terms of analyses of oocyte competence regarding normality of the spindle and chromosome configurations. Our findings demonstrated that it was feasible to isolate and culture secondary follicles and to obtain mature oocytes from prepubertal mice ovaries recently treated with CPA. The efficiency of this method was highly demonstrated in the 100 mg/kg CPA group, with near 90% follicle survival rate after 12 days’ culture, similarly to control. Around 80% of the follicles met the criteria to put into maturation, and more than 40% of them achieved metaphase II, with normal spindle and chromosome configurations observed. Suboptimal results were obtained in the 50 and 75 mg/kg CPA groups. These paradoxical findings towards CPA dose might probably reflect a more difficult selection of damaged growing follicles from ovaries recently treated with lower doses of CPA and a hampered ability to identify and discard those with reduced viability for the culture.

scholarly journals A STUDY ON THE NECESSITY OF TIME LAPSE MONITORING FOR IN VITRO MATURATION IN COMBINED PROCEDURE AT THE TIMING OF OVARIAN TISSUE CRYOPRESERVATION

2021 ◽  
Vol 116 (3) ◽  
pp. e162
Author(s):  
Hiromitsu Shirasawa ◽  
Yukiyo Kumazawa ◽  
Wataru Sato ◽  
Kazumasa Takahashi ◽  
Kazue Togashi ◽  
...  
Keyword(s):  
In Vitro Maturation ◽  
Ovarian Tissue ◽  
Time Lapse ◽  
Ovarian Tissue Cryopreservation ◽  
Combined Procedure ◽  
Tissue Cryopreservation
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