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https://www.readbyqxmd.com/read/28651359/altered-mirna-and-pirna-profiles-in-cumulus-cells-from-patients-with-diminished-ovarian-reserve
#1
Dawei Chen, Zhiguo Zhang, Beili Chen, Dongmei Ji, Yan Hao, Ping Zhou, Zhaolian Wei, Yunxia Cao
Diminished ovarian reserve (DOR) is defined as decreased number or quality of follicles and oocytes in a woman at childbearing age. It is estimated that up to 10% of women in the general population may suffer from DOR. The present study aims to comprehensively characterize miRNA and piRNA expression profiles in cumulus cells of DOR patients. Cumulus cells were collected from 20 women of similar chronological age who received assisted reproductive technology treatment, 10 with diminished ovarian reserve (DOR), 10 with normal ovarian reserve (NOR)...
June 23, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28651210/associations-between-perfluorinated-alkyl-acids-in-blood-and-ovarian-follicular-fluid-and-ovarian-function-in-women-undergoing-assisted-reproductive-treatment
#2
Jessica A McCoy, Jacqueline T Bangma, Jessica L Reiner, John A Bowden, John Schnorr, Michael Slowey, Thomas O'Leary, Louis J Guillette, Benjamin B Parrott
Endocrine disrupting contaminants, in combination with other environmental variables, are associated with altered reproductive health. Assisted reproductive technology (ART) procedures offer valuable opportunities to explore the connections between environmental contaminants in the ovarian microenvironment and measures of fertility, including impaired responsiveness to gonadotropins. Here, we investigate an emerging class of environmental contaminants, the perfluorinated alkyl acids (PFAAs), to determine whether ovarian contaminant levels are associated with measures of ovarian responsiveness and fertility outcomes in a South Carolina population of women undergoing ART...
June 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28650975/defective-glucocorticoid-receptor-signaling-and-keratinocyte-autonomous-defects-contribute-to-skin-phenotype-of-mouse-embryos-lacking-the-hsp90-co-chaperone-p23
#3
Marta Madon-Simon, Iwona Grad, Pilar Bayo, Paloma Pérez, Didier Picard
p23 is a small acidic protein with intrinsic molecular chaperone activity. It is best known as a co-chaperone of the major cytosolic molecular chaperone Hsp90. p23 binds the N-terminus of Hsp90 and stabilizes the ATP-bound and N-terminally closed Hsp90 dimer. It is in this configuration that many Hsp90 clients are most stably bound. Considering the important role of p23 in the Hsp90 cycle, it came as a surprise that it is not absolutely essential for viability in the budding yeast or for mouse development. Mice without p23 develop quite normally until birth and then all die perinatally because of immature lungs...
2017: PloS One
https://www.readbyqxmd.com/read/28650599/anti-mullerian-hormone-a-marker-of-upcoming-menopause-or-a-questionable-guesswork
#4
(no author information available yet)
Anti-Müllerian hormone (AMH) is a protein produced by pre-antral and small antral ovarian follicles. It is an acknowledged marker of ovarian reserve and remaining reproductive capacity, commonly used in reproductive medicine. From the third decade of life, AMH serum levels decrease consecutively up to menopause. Since the standardization of commercial assays, novel contributions of that parameter are being observed. Up to date, there is no screening tool for predicting the age of natural menopause (ANM). The following literature review evaluates the utility of AMH measurement in predicting ANM...
May 26, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28649865/dental-stem-cells-recent-progresses-in-tissue-engineering-and-regenerative-medicine
#5
João Botelho, Maria Alzira Cavacas, Vanessa Machado, José João Mendes
Since the disclosure of adult mesenchymal stem cells (MSCs) there have been an intense investigation on the characteristics of these cells and their potentialities. Dental Stem Cells (DSCs) are MSC-like populations with self-renewal capacity and multidifferentiation potential. Currently, there are five main DSCs, dental pulp stem cells (DPSCs), stem cells from exfoliated deciduous teeth (SHED), stem cells from apical papilla (SCAP), periodontal ligament stem cells (PDLSCs), and Dental Follicle Precursor Cells (DFPCs)...
June 24, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28649748/sonographic-comparison-of-morphologic-characteristics-between-pilonidal-cysts-and-hidradenitis-suppurativa
#6
Ximena Wortsman, Ariel Castro, Claudia Morales, Carmen Franco, Andres Figueroa
OBJECTIVES: To compare the sonographic characteristics of pilonidal cysts and hidradenitis suppurativa. METHODS: A retrospective study of sonographic examinations was performed on 2 groups: 1 with pilonidal cysts and the other with hidradenitis suppurativa. The sonographic characteristics of the pilonidal cyst and hidradenitis suppurativa groups were analyzed, compared, and correlated, including an analysis of the histologic findings. For the pilonidal cyst group, the distribution, morphologic characteristics, location, shape, diameter, axis, vascularity, and scarring were also described...
June 26, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28649090/mirna-143-mediates-the-proliferative-signaling-pathway-of-fsh-and-regulates-estradiol-production
#7
Li Zhang, XiaoXin Zhang, Xuejing Zhang, Yu Lu, Lei Li, Sheng Cui
MicroRNAs (MiRNAs) play important regulatory roles in many cellular processes. MiR-143 is highly enriched in the mouse ovary, but its roles and underlying mechanisms are not well understood. In the current study, we show that miR-143 is located in granulosa cells of primary, secondary and antral follicles. To explore the specific functions of miR-143, we transfected miR-143 inhibitor into primary cultured granulosa cells to study the loss of function of miR-143 and the results showed that miR-143 silencing significantly increased estradiol production and steroidogenesis-related gene expression...
July 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28648634/impaired-ovarian-response-to-exogenous-gonadotropins-in-female-rat-offspring-born-to-mothers-perinatally-exposed-to-bisphenol-a
#8
C G Santamaría, H A Rodriguez, J E Abud, O E Rivera, M Muñoz-de-Toro, E H Luque
The ovary is sensitive to disruption by the environmental estrogen Bisphenol A (BPA). Our aim was to investigate whether perinatal exposure to BPA (50μg/kg.day), orally administered, affects ovarian response to exogenous gonadotrophins (PMSG or PMSG+hCG) in prepubertal female offspring. An altered response to gonadotrophins was observed in BPA-exposed rats. Increased proportion of antral follicles, altered levels of ovarian steroidogenic enzymes, gonadotropin receptors, AR and ERβ were observed in PMSG group...
June 22, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28648507/resistance-to-thyrotropin
#9
REVIEW
Helmut Grasberger, Samuel Refetoff
Resistance to thyrotropin (RTSH) is broadly defined as reduced sensitivity of thyroid follicle cells to stimulation by biologically active TSH due to genetic defects. Affected individuals have elevated serum TSH in the absence of goiter, with the severity ranging from nongoitrous isolated hyperthyrotropinemia to severe congenital hypothyroidism with thyroid hypoplasia. Conceptually, defects leading to RTSH impair both aspects of TSH-mediated action, namely thyroid hormone synthesis and gland growth. These include inactivating mutations in the genes encoding the TSH receptor and the PAX8 transcription factor...
March 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28647445/the-value-of-anti-m%C3%A3-llerian-hormone-in-predicting-clinical-pregnancy-after-intrauterine-insemination
#10
Yelena Dondik, Nassim Virji, Thomas S Butler, Jeremy T Gaskins, Kelly Pagidas, Linda Sung
OBJECTIVES: To evaluate the utility of anti-Müllerian hormone (AMH) in predicting clinical pregnancy with intrauterine insemination (IUI) and compare it to other markers of quantitative ovarian reserve. METHODS: Retrospective cohort study of women undergoing natural and stimulated IUI cycles. All patients achieved a clinical pregnancy within three IUI cycles or completed three IUI cycles without pregnancy. Receiver operating curves were generated to determine the ability of AMH, antral follicle count, age, BMI, and day 3 FSH to predict clinical pregnancy with IUI...
June 21, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28647027/targeting-of-stem-cell-niches-using-unconventional-genetic-tools
#11
Vasily V Shinin, Andrey A Panteleyev
Maintenance of hair follicle (HF) stem cell quiescence and self-renewal are key functions of a specific cellular niche represented by the HF bulge and adjacent cell populations. The unique context of this niche is crucial for normal HF functioning, but mechanisms implicated in its maintenance are still not quite clear. The Letter to the Editor by Sada et al. introduces a novel Slc1a3-CreER genetic mouse model which, in contrast to previously reported marking tools, selectively and highly efficiently demarcates the telogen bulge inner layer, one of the critical structural components of the bulge stem cell niche...
July 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28646941/postwash-total-motile-sperm-count-should-it-be-included-as-a-standard-male-infertility-work-up
#12
Khaled Madbouly, Ahmed Isa, Mohamad Habous, Raed Almannie, Basim Abu-Rafea, Saleh Binsaleh
INTRODUCTION: Pregnancy rates after intrauterine insemination (IUI) varies greatly. We aimed to identify pre and post processing semen analysis parameters that may be predictive of successful pregnancy in couples undergoing IUI. MATERIALS AND METHODS: A retrospective study of the records of all couples underwent IUI for a 2 year period at our infertility center. Different characteristics of female subjects, pre and post processing semen parameters and treatment parameters were compared statistically...
June 2017: Canadian Journal of Urology
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
#13
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/28646392/the-changing-landscape-of-alopecia-areata-the-translational-landscape
#14
REVIEW
Etienne C E Wang, Angela M Christiano
Recent genetic and preclinical studies have increased our understanding of the immunopathogenesis of alopecia areata (AA). This has allowed expedited development of targeted therapies for the treatment of AA, and a paradigm shift in our approach and understanding of autoimmunity and the hair follicle. The synergy between preclinical studies, animal models, and translational studies has led to unprecedented advances in the treatment options for AA, ultimately benefiting patients who have had little recourse...
June 23, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28646317/di-n-butyl-phthalate-prompts-interruption-of-spermatogenesis-steroidogenesis-and-fertility-associated-with-increased-testicular-oxidative-stress-in-adult-male-rats
#15
Giribabu Nelli, Sreenivasula Reddy Pamanji
Di-n-butyl phthalate (DBP) is extensively used as plasticizer, and it was ubiquitary released into the environment. The present study was aimed to investigate the effect of DBP on reproductive competence in adult male rats. Adult male rats were received corn oil or DBP injection intraperitoneally (ip) at 100 and 500 mg/kg body weight on 90, 97, 104, and 111 days. Following completion of the experimental period, adult male rats were cohabitated with untreated proestrus female rats for determination of fertilization capacity...
June 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28645781/immunomodulatory-mechanism-of-bushen-huoxue-recipe-alleviates-cyclophosphamide-induced-diminished-ovarian-reserve-in-mouse-model
#16
Cong Huang, Kunkun Song, Wenwen Ma, Jiahui Ding, Zhuo Chen, Mingmin Zhang
ETHNOPHARMACOLOGICAL RELEVANCE: Bushen Huoxue recipe (BHR) is a Chinese herbal prescription composed of ten herbs and it is widely used for the treatment of diminished ovarian reserve (DOR). This study investigates the potentially beneficial effects and underlying mechanism of BHR on a cyclophosphamide (CTX) induced model of DOR in mice. MATERIALS AND METHODS: Granules of BHR were first subjected to high performance liquid chromatography (HPLC) to determine the exact ingredients within the mixture...
June 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28645634/hormonal-behavior-correlates-with-follicular-recruitment-at-mid-gestation-in-the-south-american-plains-vizcacha-lagostomus-maximus-rodentia-caviomorpha
#17
Nicolas Alejandro Fraunhoffer, Federico Jensen, Noelia Leopardo, Pablo Ignacio Felipe Inserra, Analía Meilerman Abuelafia, María Beatriz Espinosa, Santiago Elías Charif, Verónica Berta Dorfman, Alfredo Daniel Vitullo
In mammals, hormonal regulation during gestation is crucial for embryo implantation and pregnancy success. This regulation is controlled through the level of progesterone (P4) that blocks the activity of the hypothalamic-hypophyseal-gonadal (HHG) axis. Previous studies in the pregnant South American plains vizcacha, Lagostomus maximus, have shown that the HHG axis activates around mid-gestation, promoting pre-ovulatory follicle formation. However, the characterization of the hormonal dynamics throughout gestation and its ovarian correlation has not been studied in depth...
June 20, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28645283/oocyte-polarized-light-microscopy-assay-of-specific-follicular-fluid-metabolites-and-gene-expression-in-cumulus-cells-as-different-approaches-to-predict-fertilization-efficiency-after-icsi
#18
Alberto Revelli, Stefano Canosa, Loredana Bergandi, Oleksii A Skorokhod, Valentina Biasoni, Andrea Carosso, Angela Bertagna, Milena Maule, Elisabetta Aldieri, Maria Diletta D'Eufemia, Francesca Evangelista, Nicola Colacurci, Chiara Benedetto
BACKGROUND: The complex relationship between oocyte morphology, specific follicular fluid metabolites, gene expression in cumulus granulosa cells, and oocyte competence toward fertilization and embryo development still needs further clarification. METHODS: Forty-six oocytes retrieved from the largest pre-ovulatory follicle of patients undergoing intra-cytoplasmic sperm injection (ICSI) were considered assessing: (a) oocyte morphological characteristics at polarized light microscopy (PLM), (b) specific follicular fluid (FF) metabolites previously suggested to influence oocyte competence (AMH, markers of redox status and of cytotoxicity), (c) transcription of AMH and AMH type II receptor genes in cumulus cells...
June 23, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28641997/uterine-artery-embolization-and-surgical-methods-for-the-treatment-of-symptomatic-uterine-leiomyomas-a-systemic-review-and-meta-analysis-followed-by-indirect-treatment-comparison
#19
REVIEW
Marcelo C M Fonseca, Rodrigo Castro, Marcio Machado, Tania Conte, Manoel J B C Girao
PURPOSE: There is significant discussion and uncertainty about the optimal management of symptomatic uterine leiomyomas (SULs). Nonsurgical procedures such as uterine artery embolization (UAE) have been developed. The goal of this study was to conduct a meta-analysis and an indirect treatment comparison to examine the comparative efficacy and safety of the surgical procedures to treat SULs compared with UAE. METHODS: MEDLINE, EMBASE, Lilacs, and the Cochrane Central Register of Controlled Trials databases were searched from inception to February 2016...
June 19, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28641706/delayed-onset-of-puberty-in-male-offspring-from-bisphenol-a-treated-dams-is-followed-by-the-modulation-of-gene-expression-in-the-hypothalamic-pituitary-testis-axis-in-adulthood
#20
Isabela M Oliveira, Renata M Romano, Patricia de Campos, Monica D Cavallin, Claudio A Oliveira, Marco A Romano
Bisphenol A (BPA) is a synthetic endocrine-disrupting chemical of high prevalence in the environment, which may affect the function of the hypothalamic-pituitary-testis (HPT) axis in adult rats. The aim of the present study was to evaluate whether exposure to BPA during hypothalamic sexual differentiation at doses below the reproductive no observable adverse effect level of the World Health Organization causes changes in the regulation of the HPT axis. For this, 0.5 or 5mgkg-1 BPA was injected subcutaneously to the mothers from gestational day 18 to postnatal day (PND) 5...
June 23, 2017: Reproduction, Fertility, and Development
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