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Ovarian failure

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https://www.readbyqxmd.com/read/28208728/parabens-accelerate-ovarian-dysfunction-in-a-4-vinylcyclohexene-diepoxide-induced-ovarian-failure-model
#1
Jae-Hwan Lee, Myeongho Lee, Changhwan Ahn, Hee Young Kang, Dinh Nam Tran, Eui-Bae Jeung
Parabens are widely used preservatives in basic necessities such as cosmetic and pharmaceutical products. In previous studies, xenoestrogenic actions of parabens were reported in an immature rat model and a rat pituitary cell line (GH3 cells). The relationship between parabens and ovarian failure has not been described. In the present study, the influence of parabens on ovarian folliculogenesis and steroidogenesis was investigated. A disruptor of ovarian small pre-antral follicles, 4-vinylcyclohexene diepoxide (VCD, 40 mg/kg), was used to induce premature ovarian failure (POF)...
February 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28193729/sequential-divergent-and-cooperative-requirements-of-foxl2a-and-foxl2b-in-ovary-development-and-maintenance-of-zebrafish
#2
Yan-Jing Yang, Yang Wang, Zhi Li, Li Zhou, Jian-Fang Gui
Foxl2 is essential for mammalian ovary maintenance. Although sexually dimorphic expression of foxl2 was observed in many teleost, its role and regulative mechanism in fish remained largely unclear. In this study, we first identified two transcript variants of foxl2a and its homologous gene foxl2b in zebrafish, and revealed their specific expression in follicular layer cells in a sequential and divergent fashion during ovary differentiation, maturation and maintenance. Then, homozygous foxl2a mutants (foxl2a(-/-)) and foxl2b mutants (foxl2b(-/-)) were constructed, and detailed comparisons, such as sex ratio, gonadal histological structure, transcriptome profiling and dynamic expression of gonadal development-related genes, were carried out...
February 13, 2017: Genetics
https://www.readbyqxmd.com/read/28188718/-hematopoietic-stem-cells-transplant-in-patients-with-common-variable-immunodeficiency-is-a-therapeutic-option
#3
Julio César Cambray-Gutiérrez, Diana Andrea Herrera-Sánchez, Patricia López-Pérez, Aurora Chávez-García, Marco Antonio Yamazaki-Nakashimada
BACKGROUND: Patients with common variable immunodeficiency show higher incidence of sinopulmonary and gastrointestinal infections, as well as lymphoproliferative and autoimmune diseases. The treatment of choice is replacement therapy with human gamma-globulin. Hematopoietic stem cell transplantation is a non-conventional therapeutic modality. CASE REPORT: Twenty-six-year old woman with no family or hereditary history of primary immune deficiencies or consanguinity, with repeated episodes of otitis, sinusitis, gastroenteritis and bronchitis since childhood...
January 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/28186611/-ethical-issues-of-oocyte-donation
#4
Yanjin Liu, Libai Cai
The birth and development of oocyte donation technology have brought hope for women with poor ovarian reserve and repeated failure for in vitro fertilization, as well as for those with chromosomal abnormalities, premature ovarian failure, or at perimenopausal or menopausal stages. It has not only preserved their reproductive right, but also stabilized their families and increased social harmony. However, this technology does not only involve infertile couples themselves, but also social and ethical issues concerning their families and the society...
February 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28178855/ginsenoside-rg1-improves-fertility-and-reduces-ovarian-pathological-damages-in-premature-ovarian-failure-model-of-mice
#5
Lianli He, Li Ling, Tianqin Wei, Yaping Wang, Zhengai Xiong
This study aims to investigate the effect as well as mechanism of ginsenoside Rg1 (Rg1) on premature ovarian failure (POF) induced by d-galactose (d-gal) in mice. C57BL/6 female mice were divided into four groups randomly, which were the saline group, the d-gal group, the d-gal + Rg1 group, and the Rg1 group. Body weight was recorded. Overall ovarian function including estrous cycles, sex hormone secretion, ovarian follicle development, and ovarian morphology was analyzed by H&E staining and ELISA. Effect of Rg1 on aging was determined by analyzing the activities of oxidation-associated biomarkers, pro-inflammatory cytokine secretion, expression of senescence-associated proteins, and fertility...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28177223/facial-layer-by-layer-engineering-of-upconversion-nanoparticles-for-gene-delivery-nir-initiated-fret-tracking-and-overcoming-drug-resistance-in-ovarian-cancer
#6
Min Lin, Yan Gao, Thomas J Diefenbach, Jacson K Shen, Francis J Hornicek, Yong Il Park, Feng Xu, Tian Jian Lu, Mansoor M Amiji, Zhenfeng Duan
Development of multidrug resistance (MDR) contributes to the majority of treatment failures in clinical chemotherapy. We report facial layer-by-layer engineered upconversion nanoparticles (UCNPs) for near infrared (NIR) initiated tracking and delivery of small interfering RNA (siRNA) to enhance chemotherapy efficacy by silencing the MDR1 gene and re-sensitizing resistant ovarian cancer cells to drug. Layer-by-layer engineered UCNPs were loaded with MDR1 gene-silencing siRNA (MDR1-siRNA) by electrostatic interaction...
February 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28168125/role-of-gamma-knife%C3%A2-radiosurgery-for-the-treatment-of-brain-metastases-from-gynecological-cancers
#7
Andrew Keller, Rahim Ismail, Peter S Potrebko, Julie Pepe, Meiling Wu, Kunal Saigal, Matthew Biagioli, Ravi Shridhar, Robert Holloway, Melvin Field, Nikhil G Rao
OBJECTIVE: Gamma Knife(®) (GK) (Elekta Instruments, Stockholm, Sweden) radiosurgery is well established for treatment of brain metastases. There are limited data on patients treated with GK from gynecological cancers. The authors sought to determine the effectiveness of the GK in patients with brain metastases from gynecological cancers. METHODS: An IRB-approved database was queried for patients with gynecologic cancers treated with GK between June 1996 and May 2016...
December 31, 2016: Curēus
https://www.readbyqxmd.com/read/28154920/high-grade-serous-ovarian-cancer-the-clone-wars
#8
REVIEW
Aleksander Salomon-Perzyński, Magdalena Salomon-Perzyńska, Bogdan Michalski, Violetta Skrzypulec-Plinta
BACKGROUND: The last 5 years' studies using next-generation sequencing provided evidences that many types of solid tumors present spatial and temporal genetic heterogeneity and are composed of multiple populations of genetically distinct subclones that evolve over time following a pattern of branched evolution. The evolutionary nature of cancer has been proposed as the major contributor to drug resistance and treatment failure. In this review, we present the current state of knowledge about the clonal evolution of high-grade serous ovarian cancer and discuss the challenge that clonal evolution poses for efforts to achieve an optimal cancer control...
February 3, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28139522/ovarian-fibrosis-a-phenomenon-of-concern
#9
REVIEW
Feng Zhou, Li-Bing Shi, Song-Ying Zhang
OBJECTIVE: Ovarian fibrosis is characterized by excessive proliferation of ovarian fibroblasts and deposition of extracellular matrix (ECM) and it is one of the principal reasons for ovarian dysfunction. This review aimed to investigate the pathogenetic mechanism of ovarian fibrosis and to clarify the relationship between ovarian diseases and fibrosis. DATA SOURCES: We searched PubMed for English language articles published up to November 2016. The search terms included ovarian fibrosis OR fibrosis, ovarian chocolate cyst OR ovarian endometrioma, polycystic ovarian syndrome (PCOS), premature ovarian failure, ECM, matrix metalloproteinases (MMPs), tissue inhibitors of matrix metalloproteinases (TIMPs), transforming growth factor-beta 1 (TGF-β1), connective tissue growth factor (CTGF), peroxisome proliferator-activated receptor gamma (PPAR-γ), vascular endothelial growth factor (VEGF), endothelin-1 (ET-1), and combinations of these terms...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28137754/efficacy-and-safety-of-follitropin-alfa-lutropin-alfa-in-art-a-randomized-controlled-trial-in-poor-ovarian-responders
#10
P Humaidan, W Chin, D Rogoff, T D'Hooghe, S Longobardi, J Hubbard, J Schertz
STUDY QUESTION: How does the efficacy and safety of a fixed-ratio combination of recombinant human FSH plus recombinant human LH (follitropin alfa plus lutropin alfa; r-hFSH/r-hLH) compare with that of r-hFSH monotherapy for controlled ovarian stimulation (COS) in patients with poor ovarian response (POR)? SUMMARY ANSWER: The primary and secondary efficacy endpoints were comparable between treatment groups and the safety profile of both treatment regimens was favourable...
January 30, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28133606/hypothyroidism-reduces-the-size-of-ovarian-follicles-and-promotes-hypertrophy-of-periovarian-fat-with-infiltration-of-macrophages-in-adult-rabbits
#11
J Rodríguez-Castelán, M Méndez-Tepepa, Y Carrillo-Portillo, A Anaya-Hernández, J Rodríguez-Antolín, E Zambrano, F Castelán, E Cuevas-Romero
Ovarian failure is related to dyslipidemias and inflammation, as well as to hypertrophy and dysfunction of the visceral adipose tissue (VAT). Although hypothyroidism has been associated with obesity, dyslipidemias, and inflammation in humans and animals, its influence on the characteristics of ovarian follicles in adulthood is scarcely known. Control and hypothyroid rabbits were used to analyze the ovarian follicles, expression of aromatase in the ovary, serum concentration of lipids, leptin, and uric acid, size of adipocytes, and infiltration of macrophages in the periovarian VAT...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28123528/effects-of-anti-cd44-monoclonal-antibody-im7-carried-with-chitosan-polylactic-acid-coated-nano-particles-on-the-treatment-of-ovarian-cancer
#12
Yizhuo Yang, Xinghui Zhao, Xiuli Li, Zhifeng Yan, Zhongyu Liu, Yali Li
Failure in early diagnosis and ineffective treatment are the major causes of ovarian cancer mortality. Hyaluronan and its receptor, cluster of differentiation (CD)44, have been considered to be valid targets for treating cancer. The anti-CD44 monoclonal antibody IM7 is effective in treating ovarian cancer; however, its toxicity should not be ignored. The present study has developed a new drug carrier system composed of chitosan nano-particles coated with polylactic acid (PLA) to improve the treatment efficacy and reduce toxicity...
January 2017: Oncology Letters
https://www.readbyqxmd.com/read/28118836/the-impact-of-endometriosis-on-the-outcome-of-assisted-reproductive-technology
#13
Mireia González-Comadran, Juan Enrique Schwarze, Fernando Zegers-Hochschild, Maria do Carmo B Souza, Ramon Carreras, Miguel Ángel Checa
BACKGROUND: Endometriosis has been described to impair fertility through various mechanisms. However, studies evaluating the reproductive outcomes of women undergoing assisted reproductive technologies show controversial results. The aim of this study is to assess whether the reproductive outcome is impaired among women with endometriosis-associated infertility undergoing IVF. METHODS: A retrospective cohort study was performed, including women undergoing IVF reported by the Red Latinoamericana de Reproduccion Asistida (Redlara) registry, between January 2010 and December 2012...
January 24, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28118297/genetic-variants-of-age-at-menopause-are-not-related-to-timing-of-ovarian-failure-in-breast-cancer-survivors
#14
Michael V Homer, Lindsey M Charo, Loki Natarajan, Carolyn Haunschild, Karine Chung, Jun J Mao, Angela M DeMichele, H Irene Su
OBJECTIVE: To determine if interindividual genetic variation in single-nucleotide polymorphisms (SNPs) related to age at natural menopause is associated with risk of ovarian failure in breast cancer survivors. METHODS: A prospective cohort of 169 premenopausal breast cancer survivors recruited at diagnosis with stages 0 to III disease were followed longitudinally for menstrual pattern via self-reported daily menstrual diaries. Participants were genotyped for 13 SNPs previously found to be associated with age at natural menopause: EXO1, TLK1, HELQ, UIMC1, PRIM1, POLG, TMEM224, BRSK1, and MCM8...
January 23, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28114977/study-of-the-reparative-effects-of-menstrual-derived-stem-cells-on-premature-ovarian-failure-in-mice
#15
Zhen Wang, Yueling Wang, Ting Yang, Jing Li, Xinyuan Yang
BACKGROUND: Young female patients who receive chemotherapy frequently face premature ovarian failure (POF). The therapeutic potential of stem cells in these patients has been explored in stem cells derived from different sources. However, many of these types of stem cells are either difficult to obtain or obtaining them involves invasive procedures. Here, we show that menstrual-derived stem cells (MenSCs) are easy to access and exhibit mesenchymal stem cell-like properties. MenSCs are therefore a novel source of stem cells that can be used for tissue repair...
January 23, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28107821/effects-of-a-single-20%C3%A2-mg-dose-of-letrozole-on-ovarian-function-post-dominant-follicle-selection-an-exploratory-randomized-controlled-trial
#16
H C M Allaway, D R Chizen, G P Adams, R A Pierson
BACKGROUND: Our objective was to explore the impact of a single dose of an aromatase inhibitor (letrozole) administered at defined times of the follicular phase or immediately after ovulation on dominant follicle development, luteogenesis and new follicle wave emergence. METHODS: A prospective pilot study using a randomized complete block, controlled, open label design was conducted at an academic clinical research center. Forty-five healthy, female volunteers (25...
January 21, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28105091/effect-of-melatonin-on-the-peripheral-t-lymphocyte-cell-cycle-and-levels-of-reactive-oxygen-species-in-patients-with-premature-ovarian-failure
#17
Yanmin Li, Hongli Liu, Jing Sun, Yipeng Tian, Changzhong Li
The objective of the present study was to observe the curative effect and mechanism of melatonin for suppression of premature ovarian failure (POF). From December 2014 to June 2015, 128 patients were consecutively diagnosed with POF in the Department of Gynaecology and Obstetrics. The patients were randomly divided into the experimental and control groups. The experimental group received melatonin tablets (1-3 mg/day), while the control group received placebo tablets. The levels of six sex hormones, percentage of T lymphocytes in the G1/M phase, and levels of reactive oxygen species (ROS) were determined at four different time-points (1 day before treatment, and at 1, 3 and 6 months after treatment) in both groups...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104240/serum-and-follicular-fluid-monocyte-chemotactic-protein-1-levels-are-elevated-in-obese-women-and-are-associated-with-poorer-clinical-pregnancy-rate-after-in%C3%A2-vitro-fertilization-a%C3%A2-pilot-study
#18
Erkan Buyuk, Obehi A Asemota, Zaher Merhi, Maureen J Charron, Dara S Berger, Athena Zapantis, Sangita K Jindal
OBJECTIVE: To determine whether monocyte chemotactic protein-1 (MCP-1), a proinflammatory chemokine important in ovulation, is abnormally elevated in obese women undergoing IVF and whether serum and follicular fluid (FF) levels of MCP-1 are associated with IVF outcome. DESIGN: Prospective pilot study. SETTING: Academic center. PATIENT(S): Women undergoing IVF. INTERVENTION(S): Serum and FF were collected from women undergoing IVF...
January 16, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28099131/turner-syndrome-and-pituitary-adenomas-a-case-report-and-review-of-literature
#19
Tiffany Yeh, Angela Ganan Soto, Jose Bernardo Quintos, Lisa Swartz Topor
BACKGROUND: Turner syndrome (TS) is the most common sex chromosome abnormality in females, typically associated with primary amenorrhea and premature ovarian failure due to gonadal dysgenesis. The association of TS with hypopituitarism is an uncommon finding. The objective of the study was to describe an adolescent with TS with hypergonadotropic hypogonadism and subsequent hypogonadotropic hypogonadism. CASE PRESENTATION: A 16-year-old female with primary amenorrhea was diagnosed with TS based on karyotype 45,XO...
February 1, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28076512/mutation-analysis-of-nanos3-in-brazilian-women-with-primary-ovarian-failure
#20
Braian Lucas A Sousa, Mirian Yumie Nishi, Mariza Gerdulo Santos, Vinicius Nahime Brito, Sorahia Domenice, Berenice B Mendonca
OBJECTIVES: Primary ovarian failure is a rare disorder, and approximately 90% of cases are of unknown etiology. The aim of this study was to search for mutations in NANOS3, a gene that was recently related to the etiology of primary ovarian failure, in a group of Brazilian women. METHODS: We screened for NANOS3 DNA variants in 30 consecutive women who were previously diagnosed with primary ovarian failure, of unknown etiology and compared the results with those from 185 women with normal fertility...
December 1, 2016: Clinics
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