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Ovarian tissue cryopreservation

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https://www.readbyqxmd.com/read/27904170/twenty-five-year-old-woman-with-bilateral-borderline-ovarian-tumour-desiring-to-preserve-fertility-case-report-and-literature-review-on-the-current-state-of-fertility-preservation-in-women-with-borderline-ovarian-tumours
#1
S Findeklee, L Lotz, K Heusinger, I Hoffmann, R Dittrich, M W Beckmann
Borderline ovarian tumours are semimalignant tumours occurring unilaterally or bilaterally with a peak incidence among women of reproductive age. Since the affected women often wish to preserve fertility, particular precautions must be taken when counselling the patient and obtaining consent prior to planning an individual treatment. Options for preserving fertility include an organ-sparing surgical procedure and cryopreservation of oocytes and/or ovarian tissue. In this article, we report on a 25-year-old patient with a bilateral seromucinous borderline tumour who desired all fertility-preserving options...
November 2016: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/27892637/distribution-of-follicles-in-canine-ovarian-tissues-and-xenotransplantation-of-cryopreserved-ovarian-tissues-with-even-distribution-of-follicles
#2
I Wakasa, M Hayashi, Y Abe, H Suzuki
Ovarian follicles are not homogeneously distributed within the ovarian cortex in several species of mammals. Yet to maximize the reproducibility of experimental results of ovarian transplantation, it is essential to assess the degree of density and distribution of follicles in ovarian tissues before their transplantation. In this study, the ovarian cortex from 13 immature bitches (ten purebred and three mongrels) was sectioned into 1.0- to 1.5-mm(3) cubes, those were fixed, sectioned and stained with haematoxylin and eosin...
November 28, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27870915/effects-of-angiopoietin-2-on-transplanted-mouse-ovarian-tissue
#3
Hye Won Youm, Jaewang Lee, Eun Jung Kim, Hyun Sun Kong, Jung Ryeol Lee, Chang Suk Suh, Seok Hyun Kim
Transplantation of ovarian tissue (OT) is currently the only clinical option to restore fertility with cryopreserved OT. However, follicle loss caused by ischemia and slow revascularization occurs in transplanted OT. To shorten the ischemic period and promote angiogenesis, some angiogenic factors have been used. Angiopoietin-2 (Ang2) is one of the major angiogenic factors and has been reported to promote blood vessels and increase vascular permeability in ischemic and/or hypoxic environment. This study was performed to investigate the effects of Ang2 on follicle integrity and revascularization of transplanted mouse OT...
2016: PloS One
https://www.readbyqxmd.com/read/27852727/ovarian-tissue-culture-in-presence-of-vegf-and-fetuin-stimulates-follicle-growth-and-steroidogenesis
#4
Ebrahim Asadi, Atefeh Najafi, Ashraf Moeini, Reihaneh Pirjani, Gholamreza Hassanzadeh, Saideh Mikaeili, Ensieh Salehi, Emmanuel Adutwum, Mansoureh Soleimani, Fariba Khosravi, Mahmood Barati, Farid Abohassani
Ovarian tissue cryopreservation together with follicle culture provides a promising technique for fertility preservation in cancer patients. The study aimed to evaluate follicle parameters in a culture medium supplemented with VEGFA165 and/or fetuin. Vitrified-warmed ovarian cortical pieces were divided randomly into four culture groups consisting of basic culture medium (control), and the basic culture medium supplemented with VEGFA165, fetuin or both. After six days of culture, we evaluated the following: percentage of resting, primary and secondary growing follicles; survival rate; steroid hormones production; levels of reactive oxygen species, lipid peroxidation and total antioxidant capacity; and developmental and antioxidant gene expression...
November 16, 2016: Journal of Endocrinology
https://www.readbyqxmd.com/read/27832793/cryopreservation-and-xenografting-of-human-ovarian-fragments-medulla-decreases-the-phosphatidylserine-translocation-rate
#5
Vladimir Isachenko, Plamen Todorov, Evgenia Isachenko, Gohar Rahimi, Bettina Hanstein, Mahmoud Salama, Peter Mallmann, Andrey Tchorbanov, Paul Hardiman, Natalie Getreu, Markus Merzenich
BACKGROUND: Phosphatidylserine is the phospholipid component which plays a key role in cell cycle signaling, specifically in regards to necrosis and apoptosis. When a cell affected by some negative factors, phosphatidylserine is no longer restricted to the intracellular side of membrane and can be translocated to the extracellular surface of the cell. Cryopreservation can induce translocation of phosphatidylserine in response to hypoxia, increasing intracellular Ca(2+), osmotic disruption of cellular membranes, generation of reactive oxygen species and lipid peroxidation...
November 10, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27817861/-fertility-preservation-in-adolescents-and-young-adults-with-cancer
#6
REVIEW
Christine Rousset-Jablonski, Florian Chevillon, Nathalie Dhedin, Catherine Poirot
Fertility impairment due to treatments is a major concern for patients who have survived cancer in adolescence or as a young adult. The impact of cancer treatments on fertility depends on the age at treatments, types and cumulative doses of chemotherapy, radiation doses to organs at risk, and on surgeries conducted. Fertility preservation strategies have been developed for many years, and recently diversified thanks to advances in reproductive biology. In female adolescents and young adults, ovarian stimulation followed by oocyte (or embryo) vitrification, ovarian tissue cryopreservation, and sometimes oocyte vitrification after in vitro maturation are options that can be discussed...
November 3, 2016: Bulletin du Cancer
https://www.readbyqxmd.com/read/27816923/cryopreservation-of-ovarian-tissue-for-fertility-preservation-in-a-large-cohort-of-young-girls-focus-on-pubertal-development
#7
A K Jensen, C Rechnitzer, K T Macklon, M R S Ifversen, N Birkebæk, N Clausen, K Sørensen, J Fedder, E Ernst, C Yding Andersen
STUDY QUESTION: Is there an association between the need for medical puberty induction and the diagnosis or treatment received in girls who have undergone cryopreservation of ovarian tissue for fertility preservation? SUMMARY ANSWER: There was a clear association between the intensity of treatment received and requirement for medical puberty induction but no association with the diagnosis. WHAT IS KNOWN ALREADY: Although it cannot be predicted which girls will become infertile or develop premature ovarian insufficiency (POI) following intensive chemotherapy or irradiation, patients who are at high risk of POI should be offered ovarian tissue cryopreservation (OTC)...
November 5, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27787477/assessment-of-ovarian-reserve-and-fertility-preservation-strategies-in-children-treated-for-cancer
#8
Laura Guzy, Isabelle Demeestere
INTRODUCTION: The survival rate of chemotherapy treatments of malignant cancer or non- malignant conditions are continuously improving. As a result, there is an increased number of patients who received a gonadotoxic treatment during childhood and who later face fertility issues. Depending on the extent of the damage to the ovaries, acute or late complications may occur. Acute ovarian failure is defined by permanent amenorrhea after a high-risk treatment. When the drugs used are less gonadotoxic, ovarian insufficiency might appear later...
October 27, 2016: Minerva Ginecologica
https://www.readbyqxmd.com/read/27758003/evaluation-of-follicular-growth-and-tissue-viability-in-vitrified-warmed-domestic-dog-ovaries-after-in-vitro-culture
#9
C L Ackermann, C S Asa, R Krisher, K Bauman, S Casey, M D Lopes
Cryopreservation of gametes is an important tool to preserve fertility, but for most species, including domestic dogs, data regarding ovarian tissue cryopreservation are limited. We aimed to evaluate the follicular and tissue viability and follicular growth after in vitro culture of domestic dog ovarian cortical slices cryopreserved by vitrification. Ovarian cortex was obtained from ten pairs of ovaries from domestic dogs using two methods (A and B), one for each ovary from the same bitch. At least four slices for each method were obtained from each ovary, one was processed for histology and the other three were vitrified...
October 18, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27757998/presence-of-sucrose-in-the-vitrification-solution-and-exposure-for-longer-periods-of-time-improve-post-warming-follicle-integrity-in-cat-ovarian-tissues
#10
L Mouttham, P Comizzoli
Ovarian tissue cryopreservation followed by tissue culture is a promising approach to preserving the fertility of biomedical models and endangered species. The objective of this study was to investigate the impact of exposure time to vitrification solution and presence of sucrose using different exposure temperatures and base media on intra-ovarian follicle integrity. Peripubertal ovarian cortical pieces were obtained by isolating the cortex and dissecting it into 1 × 1 × 0.2 mm(3) pieces. The cortical pieces were then exposed to equilibration solution and then vitrification solutions (VS) in one of the conditions mentioned above, plunged directly into liquid nitrogen and stored for ≥24 hr in liquid nitrogen...
October 18, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27734578/highly-sensitive-assessment-of-neuroblastoma-minimal-residual-disease-in-ovarian-tissue-using-rt-qpcr-a-strategy-for-improving-the-safety-of-fertility-restoration
#11
Victoria Grèze, Florence Brugnon, Fanny Chambon, Pascale Halle, Michel Canis, Clotilde Amiot, Anne-Sophie Grémeau, Bruno Pereira, Yania Yáñez Peralta, Andrei Tchirkov, Justyna Kanold
BACKGROUND: Ovarian tissue cryopreservation (OTC) is the only option available to preserve fertility in prepubertal females with neuroblastoma (NB), a childhood solid tumor that can spread to the ovaries, with a risk of reintroducing malignant cells after an ovarian graft. PROCEDURE: We set out to determine whether the analysis of TH (tyrosine hydroxylase), PHOX2B (paired-like homeobox 2b), and DCX (doublecortin) transcripts using quantitative reverse transcriptase polymerase chain reaction (RT-qPCR) could be used to detect NB contamination in ovarian tissue...
October 12, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27722934/ovarian-tissue-cryopreservation-and-transplantation-scientific-implications
#12
Sherman Silber
After fresh or frozen ovary transplantation, FSH levels return to normal, and menstrual cycles resume by 150 days, coincident with anti-Müllerian hormone rising to higher than normal levels. AMH then returns to well below normal levels by 240 days, remaining as such for many years with nonetheless normal ovulation and fertility. To date, 20 babies have been born in our program from 11 fresh and 13 cryopreserved ovary transplant recipients with a live baby rate of over 70 % (11 babies from fresh and 9 from frozen)...
October 8, 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27717554/effect-of-first-line-cancer-treatment-on-the-ovarian-reserve-and-follicular-density-in-girls-under-the-age-of-18%C3%A2-years
#13
Meryam El Issaoui, Veronica Giorgione, Linn S Mamsen, Catherine Rechnitzer, Niels Birkebæk, Niels Clausen, Thomas W Kelsey, Claus Yding Andersen
OBJECTIVE: To study the impact of first-line antineoplastic treatment on ovarian reserve in young girls returning for ovarian tissue cryopreservation (OTC) in connection with a relapse. DESIGN: Retrospective case-control study. SETTING: University hospitals. PATIENT(S): Sixty-three girls under the age of 18 years who underwent OTC before (group 1: 31 patients) and after (group 2: 32 patients) their initial cancer treatment...
October 4, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27714478/clinically-applied-procedures-for-human-ovarian-tissue-cryopreservation-result-in-different-levels-of-efficacy-and-efficiency
#14
Lobke Bastings, Johan R Westphal, Catharina C M Beerendonk, Ruud L M Bekkers, Petra L M Zusterzeel, Jan C M Hendriks, Didi D M Braat, Ronald Peek
PURPOSE: Different protocols are being used worldwide for the cryopreservation of human ovarian tissue for fertility preservation purposes. The efficiency and efficacy of the majority of these protocols has not been extensively evaluated, possibly resulting in sub-optimally cryopreserved ovarian tissue. To address the impact of this issue, we assessed the effects of two clinically successful human ovarian tissue slow-freezing cryopreservation procedures on the quality of the cryopreserved tissue...
October 6, 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27702318/in-vitro-activation-a-dip-into-the-primordial-follicle-pool
#15
Ophelia Yin, Kamaria Cayton, James H Segars
CONTEXT: A current limitation of assisted reproduction is the number of available female gametes. This Commentary discusses in vitro activation (IVA), a technique that activates dormant ovarian follicles so that these follicles can become mature oocytes for fertilization. There is considerable evidence that mechanical signaling plays an important role in oocyte maturation and survival; manipulation of the mechanical environment is a key component of the IVA process. IVA acts on existing follicles and does not promote neo-oogenesis, which likely contributes little to the primordial follicle pool in the adult...
October 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27688360/egg-freezing-in-childhood-and-young-adult-cancer-survivors
#16
Francesca Filippi, Cristina Meazza, Alessio Paffoni, Francesco Raspagliesi, Monica Terenziani, Edgardo Somigliana
Fertility preservation in prepubertal and young adolescent girls scheduled for chemotherapy is a demanding situation. Despite the recent impressive improvements of ovarian cortex cryopreservation, significant limitations persist. The technique remains experimental, it exposes the girl to the risks of surgery and to an iatrogenic insult to the ovarian reserve, and there is no guarantee of use because not all girls will undergo re-implantation. Moreover, it is impossible to respect all the requested conditions for a valid informed consent...
September 29, 2016: Pediatrics
https://www.readbyqxmd.com/read/27684791/comparison-of-vitrification-and-conventional-slow-freezing-for-cryopreservation-of-ovarian-tissue-with-respect-to-the-number-of-intact-primordial-follicles-a-meta-analysis
#17
Xin-Hui Zhou, Dan Zhang, Jin Shi, Yi-Jun Wu
BACKGROUND: Vitrification is the standard method for cryopreserving human oocytes and embryos, but its effects on ovarian tissue are uncertain. The purpose of this meta-analysis was to compare the proportion of intact primordial follicles in ovarian tissue cryopreserved with vitrification versus slow freezing. METHODS: Medline, Cochrane, EMBASE, and Google Scholar databases were searched until November 11, 2014 using combinations of the search terms: ovarian tissue, cryopreservation, vitrification, follicle, follicles...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27670300/comparison-of-quartz-vials-with-polypropylene-vials-for-rapid-cryopreservation-of-human-ovarian-tissue
#18
D Scheiner, G Bracone, P Imesch, D Fink, J Hehl, B Imthurn
BACKGROUND: Because higher survival of follicles during the freezing/thawing procedure improves the quality of cryopreserved tissue reimplanted after oncological therapies, defining an optimal method for human ovarian tissue cryopreservation remains a major issue in this field. One option to improve the cryopreservation procedure is to use better materials, i.e., vials with better conductivity. The aim of this study was to compare polypropylene (PP) with quartz vials. Between September 2012 and January 2013, eight patients were recruited...
September 26, 2016: Journal of Ovarian Research
https://www.readbyqxmd.com/read/27644002/controversies-over-the-use-of-gnrh-agonists-for-reduction-of-chemotherapy-induced-gonadotoxicity
#19
M F Garrido-Oyarzún, C Castelo-Branco
The increase in cancer incidence in younger people and the significant improvement in long and permanent remission have brought concern about their reproductive future and quality of life. Up to two-thirds of adult female patients undergoing chemotherapy for malignancies eventually develop premature ovarian failure. This condition is related to many complaints including vasomotor symptoms, osteoporosis, increased risk of cardiovascular diseases, sexual dysfunction, and infertility. Therefore, protection against iatrogenic infertility and loss of endocrine ovarian function caused by chemotherapy is currently of high priority...
September 17, 2016: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/27639998/carbonyl-cyanide-4-trifluoromethoxy-phenylhydrazone-fccp-pre-exposure-ensures-follicle-integrity-during-in-vitro-culture-of-ovarian-tissue-but-not-during-cryopreservation-in-the-domestic-cat-model
#20
Nae Tanpradit, Kaywalee Chatdarong, Pierre Comizzoli
PURPOSE: Temporary and reversible downregulation of metabolism may improve the survival of tissues exposed to non-physiological conditions during transport, in vitro culture, and cryopreservation. The objectives of the study were to (1) optimize the concentration and duration of carbonyl cyanide 4-(trifluoromethoxy)phenylhydrazone (FCCP-a mitochondrial uncoupling agent) exposures for biopsies of domestic cat ovarian tissue and (2) examine the effects of FCCP pre-exposures on follicle integrity after tissue culture and/or cryopreservation...
September 17, 2016: Journal of Assisted Reproduction and Genetics
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