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Ovarian failure

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https://www.readbyqxmd.com/read/28820624/retinopathy-and-optic-atrophy-expanding-the-phenotypic-spectrum-of-pathogenic-variants-in-the-aars2-gene
#1
Jason H Peragallo, Stephanie Keller, Marjo S van der Knaap, Bruno P Soares, Suma P Shankar
BACKGROUND: Optic atrophy may be the sequela of optic nerve injury due to any insult, including isolated and syndromic genetic diseases. Alanyl-tRNA synthetase 2 (AARS2) pathogenic variants have been reported to cause leukodystrophy with ovarian failure, and cardiomyopathy (#615889) as well as combined oxidative phosphorylation deficiency-8 (#614096). We report a young child who presented with decreased vision due to optic atrophy and was found to harbor missense variants in the AARS2 gene expanding the phenotypic expression of the AARS2 gene...
August 18, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28819364/the-crosstalk-between-ovarian-cancer-stem-cell-niche-and-the-tumor-microenvironment
#2
REVIEW
Manuel Varas-Godoy, Gregory Rice, Sebastián E Illanes
Ovarian cancer is one of the most important causes of cancer-related death among women in the world. Despite advances in ovarian cancer treatment, 70-80% of women who initially respond to therapy eventually relapse and die. There is evidence that a small population of cells within the tumors called cancer stem cells (CSCs) could be responsible for treatment failure due to their enhanced chemoresistance and tumorigenicity. These cells reside in a niche that maintains the principal properties of CSCs. These properties are associated with the capacity of CSCs to interact with different cells of the tumor microenvironment including mesenchymal stem cells, endothelial cells, immune cells, and fibroblasts, promoting cancer progression...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28816950/pemetrexed-carboplatin-with-intercalated-icotinib-in-the-treatment-of-patient-with-advanced-egfr-wild-type-lung-adenocarcinoma-a-case-report
#3
Tongpeng Xu, Hao Wu, Shidai Jin, Huang Min, Zhihong Zhang, Yongqian Shu, Wei Wen, Renhua Guo
RATIONALE: Tyrosine kinase inhibitors (TKIs) are known to have greater efficacy in epidermal growth factor receptor (EGFR) mutation nonsmall cell lung cancer (NSCLC). However, about 10% of EGFR wild-type (wt) patients respond to TKIs. PATIENT CONCERNS: Several strategies to increase the efficacy of TKIs in wt NSCLC are the subjects of ongoing investigations. One of them is combining EGFR TKI with intercalated chemotherapy. DIAGNOSES: We describe a patient with EGFR wt NSCLC, who was found with ovarian and lung metastasis, was treated with pemetrexed and intercalated icotinib...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28807003/overexpression-of-mir-21-in-stem-cells-improves-ovarian-structure-and-function-in-rats-with-chemotherapy-induced-ovarian-damage-by-targeting-pdcd4-and-pten-to-inhibit-granulosa-cell-apoptosis
#4
Xiafei Fu, Yuanli He, Xuefeng Wang, Dongxian Peng, Xiaoying Chen, Xinran Li, Qing Wang
BACKGROUND: Chemotherapy-induced premature ovarian failure (POF) is a severe complication affecting tumor patients at a childbearing age. Mesenchymal stem cells (MSCs) can partially restore the ovarian structure and function damaged by chemotherapy. miR-21 is a microRNA that can regulate cell apoptosis. This study discusses the repair effect and mechanism of MSCs overexpressing miR-21 on chemotherapy-induced POF. METHODS: Rat MSCs and granulosa cells (GCs) were isolated in vitro...
August 14, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28791387/atelocollagen-mediated-in-vivo-sirna-transfection-in-ovarian-carcinoma-is-influenced-by-tumor-site-sirna-target-and-administration-route
#5
Matthieu Meryet-Figuière, Charlotte Lecerf, Emilie Varin, Jean-Luc Coll, Marie-Hélène Louis, Soizic Dutoit, Florence Giffard, Cécile Blanc-Fournier, Siham Hedir, Nicolas Vigneron, Emilie Brotin, Laurent Pelletier, Véronique Josserand, Christophe Denoyelle, Laurent Poulain
Ovarian cancer is the leading cause of death from gynecological malignancies worldwide, and innate or acquired chemoresistance of ovarian cancer cells is the major cause of therapeutic failure. It has been demonstrated that the concomitant inhibition of Bcl-xL and Mcl-1 anti-apoptotic activities is able to trigger apoptosis in chemoresistant ovarian cancer cells. In this context, siRNA-mediated Bcl‑xL and Mcl-1 inhibition constitutes an appealing strategy by which to eliminate chemoresistant cancer cells...
August 4, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28770041/stromal-senp1-promotes-mouse-early-folliculogenesis-by-regulating-bmp4-expression
#6
Shu Tan, Boya Feng, Mingzhu Yin, Huanjiao Jenny Zhou, Ge Lou, Weidong Ji, Yonghao Li, Wang Min
BACKGROUND: Mammalian folliculogenesis, maturation of the ovarian follicles, require both growth factors derived from oocyte and surrounding cells, including stromal cells. However, the mechanism by which stromal cells and derived factors regulate oocyte development remains unclear. RESULTS: We observed that SENP1, a small ubiquitin-related modifier (SUMO)-specific isopeptidase, was expressed in sm22α-positive stromal cells of mouse ovary. The sm22α-positive stromal cells tightly associated with follicle maturation...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28766468/expectations-and-limitations-of-ovarian-tissue-transplantation
#7
N J Donfack, K A Alves, V R Araújo, A Cordova, J R Figueiredo, J Smitz, A P R Rodrigues
Constant progress in the diagnosis and treatment of cancer disease has increased the number and prognosis of cancer survivors. However, the toxic effects of chemotherapy and radiotherapy on ovarian function have resulted in premature ovarian failure. Patients are, therefore, still expecting methods to be developed to preserve their fertility successfully. Several potential options are available to preserve fertility in patients who face premature ovarian failure, including immature or mature oocyte and embryo cryopreservation...
August 2, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28763363/ovarian-cancer-in-elderly-patients-patterns-of-care-and-treatment-outcomes-according-to-age-and-modified-frailty-index
#8
Annamaria Ferrero, Luca Fuso, Elisa Tripodi, Roberta Tana, Alberto Daniele, Valentina Zanfagnin, Stefania Perotto, Angiolo Gadducci
OBJECTIVE: The present study assessed the predictive value of age and Modified Frailty Index (mFI) on the management of primary epithelial ovarian cancer (EOC) patients aged 70 years or older (elderly). METHODS: A retrospective multicenter study selected elderly EOC patients treated between 2006 and 2014. Treatments were analyzed according to the following age group categories: (1) 70 to 75 years versus (2) older than 75 years, and mFI of less than 4 (low frailty) versus greater than or equal to 4 (high frailty)...
August 1, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28752977/-correlation-between-dietary-nutrition-and-premature-ovarian-failure
#9
Hui Chen, Ran Cheng, Liang-Zhi Xu
OBJECTIVE: To explore the relationship between dietary nutrition and premature ovarian failure (POF). METHODS: A case control study was undertaken in 294 patients recruited from the reproductive endocrine clinic of our hospital over the period from November 2015 to January 2017. The POF group included women with premature ovarian failure , and women with normal menstruation were included as control group. The dietary and nutritional status of these patients were analyzed and compared...
July 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28750654/different-therapeutic-effects-of-cells-derived-from-human-amniotic-membrane-on-premature-ovarian-aging-depend-on-distinct-cellular-biological-characteristics
#10
Chenyue Ding, Hong Li, Yun Wang, Fuxin Wang, Huihua Wu, Rulei Chen, Jinghuan Lv, Wei Wang, Boxian Huang
BACKGROUND: Many reports have shown that various kinds of stem cells have the ability to recover premature ovarian aging (POA) function. Transplantation of human amniotic epithelial cells (hAECs) improves ovarian function damaged by chemotherapy in a mice model. Understanding of how to evaluate the distinct effects of adult stem cells in curing POA and how to choose stem cells in clinical application is lacking. METHODS: To build a different degrees of POA model, mice were administered different doses of cyclophosphamide: light dose (70 mg/kg, 2 weeks), medium dose (70 mg/kg, 1 week; 120 mg/kg, 1 week), and high dose (120 mg/kg, 2 weeks)...
July 27, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28744698/association-of-basal-serum-androgen-levels-with-ovarian-response-and-icsi-cycle-outcome
#11
C Abide Yayla, E Ozkaya, S Kayatas Eser, I Sanverdi, B Devranoglu, T Kutlu
BACKGROUND: The purpose of this study was to assess the predictive value of basal serum testosterone (T) and dehydroepiandrosterone sulfate (DHEAS) levels during follicular phase for ovarian response and outcome in intracytoplasmic sperm injection (ICSI) cycles of women with diminished ovarian reserve. METHODS: We prospectively gathered data of basal serum androgen levels and ICSI cycle characteristics of 120 women with diminished ovarian reserve. Association of basal serum T and DHEAS levels with ovarian response was analyzed...
July 25, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28733802/assisted-reproductive-technology-treatments-and-quality-of-life-a-longitudinal-study-among-subfertile-women-and-men
#12
Francesca Agostini, Fiorella Monti, Federica Andrei, Marcella Paterlini, Stefano Palomba, Giovanni Battista La Sala
PURPOSE: Quality of life (QoL) may represent a comprehensive indicator for the assessment of the psychological impact of complex clinical conditions, such as infertility. Infertile women have a worse QoL compared to both infertile men and non-infertile controls. However, the initial phases of infertility treatments have been frequently investigated using cross-sectional study designs. This prospective longitudinal study aimed at assessing the health-related QoL change across different phases of assisted reproductive technology (ART) treatments in subfertile women and men...
July 21, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28732531/endometrial-scratching-in-women-with-implantation-failure-after-a-first-ivf-icsi-cycle-does-it-lead-to-a-higher-live-birth-rate-the-scratch-study-a-randomized-controlled-trial-ntr-5342
#13
RANDOMIZED CONTROLLED TRIAL
N E van Hoogenhuijze, H L Torrance, F Mol, J S E Laven, E Scheenjes, M A F Traas, C Janssen, B Cohlen, G Teklenburg, J P de Bruin, R van Oppenraaij, J W M Maas, E Moll, K Fleischer, M H van Hooff, C de Koning, A Cantineau, C B Lambalk, M Verberg, M Nijs, A P Manger, M van Rumste, L F van der Voet, A Preys-Bosman, J Visser, E Brinkhuis, J E den Hartog, A Sluijmer, F W Jansen, W Hermes, M L Bandell, M J Pelinck, J van Disseldorp, M van Wely, J Smeenk, Q D Pieterse, J C Boxmeer, E R Groenewoud, M J C Eijkemans, J C Kasius, F J M Broekmans
BACKGROUND: Success rates of assisted reproductive techniques (ART) are approximately 30%, with the most important limiting factor being embryo implantation. Mechanical endometrial injury, also called 'scratching', has been proposed to positively affect the chance of implantation after embryo transfer, but the currently available evidence is not yet conclusive. The primary aim of this study is to determine the effect of endometrial scratching prior to a second fresh in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) cycle on live birth rates in women with a failed first IVF/ICSI cycle...
July 21, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28732324/anti-m%C3%A3-llerian-hormone-amh-levels-in-premenopausal-breast-cancer-patients-treated-with-taxane-based-adjuvant-chemotherapy-a-translational-research-project-of-the-success-a-study
#14
Elisabeth Trapp, J Steidl, B Rack, M S Kupka, U Andergassen, J Jückstock, A Kurt, T Vilsmaier, A de Gregorio, N de Gregorio, M Tzschaschel, C Lato, A Polasik, H Tesch, A Schneeweiss, M W Beckmann, P A Fasching, W Janni, V Müller
BACKGROUND: Premenopausal women undergoing chemotherapy are at high risk for premature ovarian failure and its long-term consequences. Data on potential markers to evaluate ovarian reserve pre- and posttreatment are limited. Anti-Müllerian hormone (AMH) known for ovarian reserve in reproductive medicine could be a surrogate marker and was assessed in premenopausal breast cancer patients of the SUCCESS A study (EUDRA-CT no. 2005-000490-21). METHODS: We identified 170 premenopausal patients, age ≤ 40 years at trial entry, who received FEC-Doc as taxane-anthracylince based chemotherapy...
July 18, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28730668/recurrent-triploid-digynic-conceptions-and-mature-ovarian-teratomas-are-they-different-manifestations-of-the-same-genetic-defect
#15
Yassemine Khawajkie, William Buckett, Ngoc Minh Phuong Nguyen, Nawel Mechtouf, Asangla Ao, Jocelyne Arseneau, Rima Slim
Miscarriages affect 15% of clinically recognized pregnancies. Recurrent miscarriage (RM) is defined by the occurrence of at least two consecutive pregnancy losses and affects 1% to 5% of couples trying to conceive. In an attempt to categorize patients with RM and identify the mechanisms leading to their miscarriages, we first used flow cytometry to assess the ploidy of 93 products of conception (POCs) from 53 patients with RM (≥ 3 miscarriages). We identified a single patient with four triploid POCs. We then used fluorescent in situ hybridization to confirm the triploidies and fluorescent microsatellite genotyping with distal and pericentromeric markers to determine their parental origin and the mechanisms leading to their formation...
July 21, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28721182/mitochondria-in-oocyte-aging-current-understanding
#16
REVIEW
D Zhang, D Keilty, Z F Zhang, R C Chian
The oocyte is the largest cell found in multicellular organisms. Mitochondria, as the energy factories for cells, are found in high numbers in oocytes, as they provide the energy for oocyte maturation, fertilization, and embryo formation via oxidative phosphorylation. Failure of assisted reproduction is mainly attributed to oocyte aging and increased aneuploidy. As the most numerous organelle in the oocyte, the mitochondrion has been confirmed as a crucial player in the process of oocyte aging, which is highly influenced by mitochondrion dysfunction...
March 2017: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/28721130/premature-ovarian-failure
#17
REVIEW
Katarzyna Jankowska
Premature ovarian failure (POF) is the term usually used to describe women aged younger than 40 years, who present with amenorrhoea, hypergonadotropic hypogonadism, and infertility. POF is a devastating diagnosis for reproductive-aged women. The clinical presentation is diverse, and several different disorders can lead to premature ovarian failure. POF has serious health consequences, including psychological distress, infertility, osteoporosis, autoimmune disorders, ischaemic heart disease, and increased risk of mortality...
June 2017: Przeglad Menopauzalny, Menopause Review
https://www.readbyqxmd.com/read/28721129/anti-m%C3%A3-llerian-hormone-amh-as-a-good-predictor-of-time-of-menopause
#18
REVIEW
Aleksandra Kruszyńska, Jadwiga Słowińska-Srzednicka
Anti-Müllerian hormone (AMH) in women is secreted by granulosa cells in late preantral and small antral follicles. AMH seems to be a very stable marker having some advantages over other biochemical and biophysical markers and is very useful in the assessment of ovarian reserve. AMH measurement may be used in cases of premature ovarian failure, including iatrogenic, due to treatment for cancer, hypogonadotropic hypogonadism, and lastly, in polycystic ovary syndrome (PCOS). It is also a very specific marker of ovarian tumors - folliculomas...
June 2017: Przeglad Menopauzalny, Menopause Review
https://www.readbyqxmd.com/read/28718444/tumor-host-cell-interactions-in-ovarian-cancer-pathways-to-therapy-failure
#19
REVIEW
Elke Pogge von Strandmann, Silke Reinartz, Uwe Wager, Rolf Müller
Although most ovarian cancer patients are highly responsive to chemotherapy, they frequently present with recurrent metastatic lesions that result in poor overall survival, a situation that has not changed in the last 20 years. This review discusses new insights into the regulation of ovarian cancer chemoresistance with a focus on the emerging role of immune and other host cells. Here, we summarize the complex molecular pathways that regulate the interaction between tumor and host cells, discuss the limitations of current in vitro and in vivo models for translational studies, and present perspectives for the development of innovative therapies...
February 2017: Trends in Cancer
https://www.readbyqxmd.com/read/28713273/inhibition-of-6-phosphogluconate-dehydrogenase-reverses-cisplatin-resistance-in-ovarian-and-lung-cancer
#20
Wujian Zheng, Qi Feng, Jiao Liu, Yanke Guo, Lvfen Gao, Ruiman Li, Meng Xu, Guizhen Yan, Zhinan Yin, Shuai Zhang, Shuangping Liu, Changliang Shan
Cisplatin (DDP) is currently one of the most commonly used chemotherapeutic drugs for treating ovarian and lung cancer. However, resistance to cisplatin is common and it often leads to therapy failure. In addition, the precise mechanism of cisplatin resistance is still in its infancy. In this study, we demonstrated that the oxidative pentose phosphate pathway enzyme 6-phosphogluconate dehydrogenase (6PGD) promotes cisplatin resistance. We showed that cisplatin-resistant cancer cells (C13(∗) and A549DDP), had higher levels of 6PGD compared to their cisplatin-sensitive counterparts (OV2008 and A549)...
2017: Frontiers in Pharmacology
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