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Ovarian tissue cryopreservation

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https://www.readbyqxmd.com/read/28647785/fertility-preservation-for-trans-men-frozen-thawed-in-vitro-matured-oocytes-collected-at-the-time-of-ovarian-tissue-processing-exhibit-normal-meiotic%C3%A2-spindles
#1
S Lierman, K Tilleman, K Braeckmans, K Peynshaert, S Weyers, G T'Sjoen, P De Sutter
PURPOSES: At the moment of sex reassignment surgery (SRS), the ovarian tissue is sometimes cryopreserved as fertility preservation option for female-to-male trans men, also called trans men. During this preparation, cumulus-oocyte-complexes (COCs) can be found and in vitro matured. It is not known if these oocytes are developmentally competent. In order to use these oocytes for fertility preservation and subsequent fertilization, a normal spindle structure before and after vitrification is necessary...
June 24, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28646900/human-umbilical-cord-stem-cell-conditioned-medium-versus-serum-free-culture-medium-in-the-treatment-of-cryopreserved-human-ovarian-tissues-in-in-vitro-culture-a-randomized-controlled-trial
#2
Yingxian Jia, Xiaohan Shi, Yidong Xie, Xiaochuan Xie, Yan Wang, Shangwei Li
BACKGROUND: To reduce young female fertility loss, the in-vitro culture of cryopreserved ovarian cortical tissues (OCTs) is considered an effective approach without delaying treatment and undergoing stimulation medicine. However, ischemic damage and follicular loss during the in-vitro culture of OCTs are major technical challenges. Human umbilical cord stem cells (HUMSCs) and their conditioned medium (HUMSC-CM) have been considered to be potential resources for regeneration medicine because they secrete cytokines and enhance cell survival and function...
June 24, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28645837/residual-ethylene-glycol-and-dimethyl-sulphoxide-concentration-in-human-ovarian-tissue-during-warming-thawing-steps-following-cryopreservation
#3
Yusuke Nakamura, Ryuichiro Obata, Noriyuki Okuyama, Nobuya Aono, Tomoko Hashimoto, Koichi Kyono
There have been 60 births after transplantation of cryopreserved ovarian tissue: 58 using the slow freezing method, and two using the vitrification method. DMSO and EG are widely used as cryoprotectants. However DMSO is a known epimutagen, and EG has been reported to be toxic in high concentrations. In this study, we measured residual DMSO and EG in ovarian tissue after vitrification and slow freezing. Cryoprotectants remained at a high concentration in the vitrified/warmed ovarian tissue just before transplantation (DMSO: 9...
June 6, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28645304/validation-of-an-automated-technique-for-ovarian-cortex-dissociation-isolation-of-viable-ovarian-cells-and-their-qualification-by-multicolor-flow-cytometry
#4
Tristan Zver, Elodie Mouloungui, Aurélie Berdin, Christophe Roux, Clotilde Amiot
BACKGROUND: Ovarian tissue cryopreservation is a technique for fertility preservation addressed to prepubertal girls or to patients for whom no ovarian stimulation is possible before initiation of gonadotoxic treatments. Autotransplantation of frozen-thawed ovarian tissue is the only available option for reuse but presents some limitations: ischemic tissue damages post-transplant and reintroduction of malignant cells in cases of cancer. It is therefore essential to qualify ovarian tissue before autograft on a functional and oncological point of view...
June 23, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28590419/melatonin-and-fertoprotective-adjuvants-prevention-against-premature-ovarian-failure-during-chemotherapy
#5
REVIEW
Hoon Jang, Kwonho Hong, Youngsok Choi
Premature ovarian failure is one of the side effects of chemotherapy in pre-menopausal cancer patients. Preservation of fertility has become increasingly important in improving the quality of life of completely recovered cancer patients. Among the possible strategies for preserving fertility such as ovarian tissue cryopreservation, co-treatment with a pharmacological adjuvant is highly effective and poses less of a burden on the human body. Melatonin is generally produced in various tissues and acts as a universally acting antioxidant in cells...
June 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28583597/equine-ovarian-tissue-viability-after-cryopreservation-and-in%C3%A2-vitro-culture
#6
G D A Gastal, F L N Aguiar, B G Alves, K A Alves, S G S de Tarso, G M Ishak, C A Cavinder, J M Feugang, E L Gastal
Ovarian tissue cryopreservation allows the preservation of the female fertility potential for an undetermined period. The objectives of this study were to compare the efficiency of cryoprotective agents (CPAs; dimethyl sulfoxide, DMSO; ethylene glycol, EG; and propylene glycol, PROH) using slow-freezing and vitrification methods, and evaluate the viability of cryopreserved equine ovarian tissue after 7 days of culture. Fresh and cryopreserved ovarian fragments were evaluated for preantral follicle morphology, stromal cell density, EGFR, Ki-67, Bax, and Bcl-2 protein expression, and DNA fragmentation...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28580514/complete-protection-against-cryodamage-of-cryopreserved-whole-bovine-and-human-ovaries-using-dmso-as-a-cryoprotectant
#7
Johan R Westphal, Renne Gerritse, Didi D M Braat, Catharina C M Beerendonk, Ronald Peek
PURPOSE: This study aims to determine the optimal cryopreservation protocol for whole ovaries intended for preservation of fertility in women. METHODS: We investigated the optimal cryopreservation procedure for whole ovaries in a bovine model. The following parameters were investigated to determine their effect on ovarian tissue viability: type of cryoprotectant, administration route of the cryoprotectant (perfusion and/or submersion), and the maximum tolerable interval between death of the animal and start of the cryopreservation process...
June 3, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28534057/the-effect-of-thawing-protocols-on-follicle-conservation-in-human-ovarian-tissue-cryopreservation
#8
T Morewood, N Getreu, B Fuller, J Morris, P Hardiman
BACKGROUND: Ovarian tissue cryopreservation has the potential to improve fertility preservation for a growing number of patients undergoing sterilising therapy, particularly where oocyte or embryo cryopreservation is not suitable. However, its success is limited by significant follicular apoptosis upon thawing, and there is wide variation in thawing protocols used with little evidence of efficacy. OBJECTIVE: To determine the best warming rates to maintain tissue viability...
March 2017: Cryo Letters
https://www.readbyqxmd.com/read/28510115/application-of-decellularized-tissue-scaffolds-in-ovarian-tissue-transplantation
#9
Enes Taylan, Kutluk Oktay
In tissue engineering, decellularized scaffolds have been proved to have remarkable capacity to promote regeneration in various organs such as kidney, heart, lung, and liver. Marrying the field of cryobiology and reproductive medicine resulted in considerable progress and breakthroughs, which led to the emergence of ovarian tissue cryopreservation and transplantation as a promising option for fertility preservation. Here we describe an innovative application of decellularized tissue scaffolds as a regenerative platform for reconstruction of ovarian grafts for auto-transplantation...
May 17, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28502527/effects-of-different-sucrose-concentrations-on-vitrified-porcine-preantral-follicles-qualitative-and-quantitative-analysis
#10
Paula Rocío Gabriel, Pablo Torres, María Celeste Fratto, Humberto Cisale, Juan Alberto Claver, Daniel Marcelo Lombardo, María Laura Fischman
The aim of the present study was to perform a qualitative and quantitative analysis of the effect of different sucrose concentrations combined with ethylene glycol in the preservation of vitrified porcine preantral follicles. Fragments of ovarian cortex were vitrified in cryotubes containing 200 μl of the vitrification solution (30% Ethylene Glycol; 20% Fetal Bovine Serum; 0 M-0.25 M - 0.75 M or 1 M sucrose) and stored in liquid nitrogen for a week. Histological analysis showed that after vitrification the number of normal follicles decreased compared to the fresh tissue (control)...
May 11, 2017: Cryobiology
https://www.readbyqxmd.com/read/28486360/ovarian-mucinous-cystadenoma-after-ovarian-graft
#11
Carole Fajau-Prevot, Yann Tanguy Le Gac, Christine Chevreau, Clémentine Cohade, Nicolas Gatimel, Jean Parinaud, Roger Leandri
BACKGROUND: Freezing strips of ovarian cortex before chemotherapy followed by transplantation is an experimental method to preserve fertility for reproductive-aged women with cancer. We report a case of a cancer patient who developed a mucinous cystadenoma in a grafted piece of ovarian cortex. CASE: A 32-year-old woman with a Ewing sarcoma had ovarian cryopreservation using cortical strip freezing before receiving chemotherapy. Five years later she had no ovarian function, and the strips were thawed and grafted back onto the ovary...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28459598/practices-and-attitudes-regarding-women-undergoing-fertility-preservation-a-survey-of-the-national-physicians-cooperative
#12
Pietro Bortoletto, Rafael Confino, Brigid M Smith, Teresa K Woodruff, Mary Ellen Pavone
PURPOSE: To describe physician attitudes and variations in oncofertility treatment strategies. METHODS: An exploratory online survey administered between December 1, 2014 and January 27, 2015 to 185 members of the National Physicians Cooperative (NPC). RESULTS: Twenty-eight percent (52 of 185) of NPC members responded to the online survey. Fifty percent of respondents were obstetrician-gynecologists working largely in academic medical centers...
May 1, 2017: Journal of Adolescent and Young Adult Oncology
https://www.readbyqxmd.com/read/28442066/characterisation-and-cryopreservation-of-the-ovarian-preantral-follicle-population-from-spix-s-yellow-toothed-cavies-galea-spixii-wagler-1831
#13
Érica C G Praxedes, Gabriela L Lima, Andréia M Silva, Carlos A C Apolinário, José A B Bezerra, Ana L P Souza, Moacir F Oliveira, Ana P R Rodrigues, Alexandre R Silva
The aim of the present study was to characterise the ovarian preantral follicle (PF) population and to establish a solid surface vitrification (SSV) process using dimethyl sulfoxide (DMSO) as a cryoprotectant for preservation of ovarian tissue from yellow-toothed cavies (Galea spixii). Ovaries were fixed for PF population analysis or were subjected to the SSV process. The mean (± s.e.m.) PF population per ovarian pair was estimated to be 416.0±342.8. There were 140.0±56.0 (63.4%) and 125.0±58.0 (64.0%) primary follicles on the right and left ovaries, respectively...
March 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28438562/first-successful-vitrification-of-salmonid-ovarian-tissue
#14
Jelena Lujić, Zoran Marinović, Simona Sušnik Bajec, Ida Djurdjevič, Eszter Kása, Béla Urbányi, Ákos Horváth
Due to a lack of cryopreservation protocols for fish eggs and embryos, alternative techniques which will enable storage of female genetic resources are crucial for future development of reproduction management in conservation biology and aquaculture. Experiments were conducted to develop an optimal vitrification protocol for cryopreservation of brown trout Salmo trutta juvenile ovarian tissue. Needle immersed vitrification (NIV) method was used where ovaries were pinned on an acupuncture needle, passaged through equilibration and vitrification solutions containing different combinations and concentrations of methanol (MeOH), propylene glycol (PG) and dimethyl sulfoxide (Me2SO) and subsequently plunged into liquid nitrogen...
April 21, 2017: Cryobiology
https://www.readbyqxmd.com/read/28433369/fertility-preservation-and-refreezing-of-transplanted-ovarian-tissue-a-potential-new-way-of-managing-patients-with-low-risk-of-malignant-cell-recurrence
#15
Stine Gry Kristensen, Veronica Giorgione, Peter Humaidan, Birgit Alsbjerg, Anne-Mette Bay Bjørn, Erik Ernst, Claus Yding Andersen
OBJECTIVE: To report the first successful refreezing of ovarian tissue recovered more than 3 years after transplantation in a woman previously treated for early-stage ovarian cancer. DESIGN: Evaluation of cryopreserved and grafted ovarian tissue. SETTING: University hospital. PATIENT(S): A 23-year-old woman diagnosed with stage 1C ovarian mucinous cystadenocarcinoma. INTERVENTION(S): The patient underwent ovarian tissue cryopreservation for fertility preservation and subsequent heterotopic transplantation for fertility restoration 9 years after freezing...
April 19, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28421499/chapter-15-development-of-a-nationwide-network-for-ovarian-tissue-cryopreservation
#16
Jana Liebenthron, Markus Montag
Ovarian tissue cryopreservation is gaining much interest since the publication of the first live birth after retransplantation of frozen-thawed tissue in 2004 (Donnez et al., Lancet 364:1405-1410, 2004). In contrast to cryopreservation of gametes and embryos, ovarian tissue freezing is a complex requiring a proper approach in order to make this a viable option for fertility preservation of cancer patients. Due to the need in terms of laboratory space, equipment, personnel, and adequate logistics, an ovarian tissue cryobank is most economic if managed as a centralized service unit that interacts with numerous clinics covering the surgical part...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28421496/chapter-12-human-ovarian-tissue-slow-freezing
#17
Debra A Gook
Cryopreservation of human ovarian tissue is now being accepted as a mainstream ART laboratory procedure. The procedure described has been validated for use at the histological and functional level, and, recently, unequivocal evidence of preservation of primordial follicles has been demonstrated following twin births from cryopreserved ovarian tissue grafted at a heterotopic site.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28421488/chapter-4-role-of-antioxidants-and-antifreeze-proteins-in-cryopreservation-vitrification
#18
Seul Ki Kim, Hye Won Youm, Jung Ryeol Lee, Chang Suk Suh
In recent years, supplementation of antioxidants and antifreeze proteins during cryopreservation/vitrification has significantly improved the survival and function of oocytes and ovarian tissues (OT) in animal models. In this chapter, the experimental protocols for the use of antioxidants and antifreeze proteins in cryopreservation/vitrification are described.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28421486/chapter-2-utility-of-animal-models-for-human-ovarian-tissue-cryopreservation
#19
Seul Ki Kim, Jung Ryeol Lee, S Samuel Kim
Success in cryopreservation of ovarian tissue (OT) in animal models has led to develop efficient cryo-technologies for human ovarian tissue. In this chapter, cryopreservation protocols developed for animal experiments are described.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28419412/eliminating-malignant-cells-from-cryopreserved-ovarian-tissue-is-possible-in-leukaemia-patients
#20
Michelle Soares, Pascale Saussoy, Mathilde Maskens, Hélène Reul, Christiani A Amorim, Jacques Donnez, Marie-Madeleine Dolmans
Reimplantation of cryopreserved ovarian tissue (OT) can successfully restore ovarian function in young cancer patients after gonadotoxic treatment. However, for patients with leukaemia, there is a risk of malignant cell transmission. Our objective was to evaluate minimal disseminated disease in OT from leukaemia patients and test a follicle isolation technique to obtain disease-free follicle suspensions. Cryopreserved OT from 12 leukaemia patients was thawed and analysed by histology and long-term xenografting in immunosuppressed mice...
April 17, 2017: British Journal of Haematology
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