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Ovarial pathology

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https://www.readbyqxmd.com/read/28072594/genetics-consultation-rates-following-a-diagnosis-of-high-grade-serous-ovarian-carcinoma-in-the-canadian-province-of-ontario
#1
Jacob McGee, Karen Panabaker, Sean Leonard, Peter Ainsworth, Laurie Elit, Salimah Z Shariff
OBJECTIVE: In 2001, the province of Ontario expanded cancer genetic testing eligibility to include all women with high-grade serous ovarian carcinoma (HGSC) of the ovary, fallopian tube, and peritoneum. The aim of this study was to determine the proportion of women who attended genetics counseling for consideration of BRCA1/2 gene analysis. We also sought to examine if regional differences in consultation rate exist across administrative health regions in the province of Ontario. METHODS: We identified all women with a pathological diagnosis of HGSC in the province of Ontario between 1997 until 2011...
January 9, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28069449/a-model-of-ovulatory-regulation-examining-the-effects-of-insulin-mediated-testosterone-production-on-ovulatory-function
#2
Erica J Graham, James F Selgrade
Polycystic ovary syndrome (PCOS), a common cause of infertility in women, is often accompanied by abnormal reproductive and metabolic hormone levels. Specifically, androgens such as testosterone are elevated in many PCOS women, and the syndrome itself is frequently associated with insulin resistance, which leads to hyperinsulinemia, i.e., elevated insulin. Although the precise role of insulin in ovulatory function is unclear, its role in ovulatory dysfunction is often linked to the effects of increased ovarian androgen production...
January 6, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28067781/gestational-zearalenone-exposure-causes-reproductive-and-developmental-toxicity-in-pregnant-rats-and-female-offspring
#3
Xin Gao, Lvhui Sun, Niya Zhang, Chong Li, Jiacai Zhang, Zhuohui Xiao, Desheng Qi
Zearalenone (ZEN) is an oestrogenic mycotoxin commonly found in food and feed products and can affect reproduction and development in both humans and animals. This study aimed to determine the toxic effects of ZEN on maternal SD rats and the F1 female offspring. Sixty-four pregnant rats were divided into 4 groups and exposed to feed contaminated with ZEN (0, 5, 10, and 20 mg/kg feed) on gestational days (GDs) 0-21. Compared with the controls, the groups exposed to 10 and 20 mg/kg ZEN showed significantly decreased feed intake and body weight of pregnant rats and/or female offspring...
January 5, 2017: Toxins
https://www.readbyqxmd.com/read/28066838/neuroendocrine-carcinoma-of-the-ovotestis-a-case-report-and-review-of-literatures
#4
Tahereh Ashrafganjoei, Ainaz Sourati, Mahdiss Mohamadianamiri
BACKGROUND: Neuroendocine carcinoma of the gynecologic tract is rare and poses a significant clinical challenge because of tumor heterogeneity and lack of standardized guidelines for treatment. Ovotestis refers to the histology of a gonad that contains both ovarian follicles and testicular tubular elements. Ovotesticular disorder of sexual development occurs in fewer than 10% of all disorders of sexual development. Gonadal tumors with malignant potential occur in 2.6% of all cases of ovotesticular disorder of sexual development...
December 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28065618/pathological-features-and-clinical-behavior-of-lynch-syndrome-associated-ovarian-cancer
#5
N A J Ryan, D G Evans, K Green, E J Crosbie
OBJECTIVE: Lynch syndrome (LS) is an inherited tumor predisposition condition caused by mutations in the mismatch repair (MMR) genes. Mutation carriers are at increased risk of various malignancies, including ovarian cancer (OC). Relatively little is known about the pathological features and clinical behavior of LS associated OC. METHODS: We analyzed the data of 1047 proven MMR mutated individuals from a prospectively maintained database at a large referral center for genomic medicine in the North West of England...
January 5, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28060142/the-importance-of-appendectomy-in-surgery-for-mucinous-adenocarcinoma-of-the-ovary
#6
Mikkel Rosendahl, Laura Amalie Haueberg Oester, Claus Kim Høgdall
OBJECTIVE: The aim of this study was to assess the importance of appendectomy during surgery for mucinous ovarian cancer. It can be difficult to distinguish between primary ovarian and primary appendiceal cancers clinically, histologically, and immunohistochemically. Removal of the appendix may facilitate differential diagnosis, improve staging, and possibly increase 5-year survival but may also be associated with increased postsurgical morbidity. In the largest population published to date, we analyze and discuss these matters...
January 4, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28059101/steroid-hormone-synthesis-by-the-ovarian-stroma-surrounding-epithelial-ovarian-tumors-a-potential-mechanism-in-ovarian-tumorigenesis
#7
Luis Z Blanco, Elisabetta Kuhn, Jane C Morrison, Asli Bahadirli-Talbott, Anne Smith-Sehdev, Robert J Kurman
Epithelial ovarian tumors are responsive to steroid hormone stimulation and the ovarian stroma may have a direct role in this process. We evaluated immunohistochemical markers of sex-steroid differentiation and steroidogenesis (calretinin, inhibin, steroidogenic factor 1), steroid enzymes involved in hormone biosynthesis (CYP17, CYP19, HSD17β1, AKR1C3), and hormone receptors (estrogen receptor, progesterone receptor, and androgen receptor) in 101 epithelial ovarian tumors and in normal structures implicated in ovarian carcinogenesis (ovarian surface epithelium and cortical inclusion cysts) in an attempt to elucidate this process...
January 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28030919/cardiovascular-system-diseases-in-patients-with-polycystic-ovary-syndrome-the-role-of-inflammation-process-in-this-pathology-and-possibility-of-early-diagnosis-and-prevention
#8
REVIEW
Aleksandra Marciniak, Jolanta Nawrocka Rutkowska, Agnieszka Brodowska, Berenika Wiśniewska, Andrzej Starczewski
Polycystic ovary syndrome is a disorder which affects 5-10% of women in reproductive age. PCOS is a cause of hyperandrogenism, menstrual disorders and infertility. The most common clinical symptoms are hirsutism, acne and obesity. Patients often suffer from metabolic disorders: insulin resistance, hyperinsulinemia, dislipidemia, leading to atherosclerosis and others irregularities of the metabolic syndrome. Patients are in the high risk group for cardiovascular diseases (CVD) development because of the metabolic abnormalities...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28003536/deficient-melanocortin-4-receptor-causes-abnormal-reproductive-neuroendocrine-profile-in-female-mice
#9
Xiaolin Chen, Lili Huang, Hwee Y Tan, Hongzhuo Li, Ying Wan, Michael Cowley, Johannes D Veldhuis, Chen Chen
Deletion of the melanocortin-4-receptor (Mc4r) gene in mice causes hyperphagia, followed by hyperinsulinemia, obesity and progressive infertility. Evidence shows that the number of developed corpora lutea is reduced in obese MC4R-knockout (MC4R KO) female mice, but the mechanism is unclear. The effect of hyperphagia and obesity by MC4R KO on pulsatile luteinizing hormone (LH) secretion and ovulation remains unknown. In MC4R KO mice and wild-type littermates (WT LM) during the diestrus period throughout different ages, we examined and monitored their metabolic status, pulsatile LH profiles, follicular morphology and the number of corpora lutea...
March 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28002209/value-of-specialist-pathology-review-in-a-single-statewide-gynecologic-cancer-service
#10
Jerome Melon, Yee Leung, Stuart G Salfinger, Jason Tan, Ganendra Mohan, Paul A Cohen
OBJECTIVE: A case review by specialist diagnostic pathologists as part of a Gynecologic Oncology Multi-disciplinary Tumor group has the potential to influence the management of patients with cancer. The primary aim of this study was to determine the frequency of diagnostic discrepancies between the initial (nonspecialist) and final pathological diagnoses in cases referred to the Gynecologic Oncology Tumor Conference (TC) in Western Australia and the impact of such revised diagnosis on clinical management...
January 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/27993358/involvement-of-matrix-metalloproteinases-and-their-inhibitors-in-bovine-cystic-ovarian-disease
#11
M B Peralta, M E Baravalle, E M Belotti, A F Stassi, N R Salvetti, H H Ortega, F Rey, M M L Velázquez
The most important regulators of tissue remodelling during ovarian follicular growth, development, ovulation and atresia are gonadotropins, steroid hormones, growth factors and different proteolytic enzymes. Matrix metalloproteinases (MMPs) such as collagenase or gelatinase (i.e. MMP-1, -8, -2 and -9) and associated tissue inhibitors of metalloproteinases (TIMP-1, -2, -3 and -4) control connective tissue remodelling during follicular rupture. In this study, we hypothesized that an imbalance in the MMP-TIMP system may be an intra-ovarian component that contributes to the pathogenesis of cystic ovarian disease (COD) in cows...
December 16, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27993242/hiv-protease-inhibitors-alter-amyloid-precursor-protein-processing-via-%C3%AE-site-amyloid-precursor-protein-cleaving-enzyme-1-translational-up-regulation
#12
Patrick J Gannon, Cagla Akay-Espinoza, Alan C Yee, Lisa A Briand, Michelle A Erickson, Benjamin B Gelman, Yan Gao, Norman J Haughey, M Christine Zink, Janice E Clements, Nicholas S Kim, Gabriel Van De Walle, Brigid K Jensen, Robert Vassar, R Christopher Pierce, Alexander J Gill, Dennis L Kolson, J Alan Diehl, Joseph L Mankowski, Kelly L Jordan-Sciutto
Mounting evidence implicates antiretroviral (ARV) drugs as potential contributors to the persistence and evolution of clinical and pathological presentation of HIV-associated neurocognitive disorders in the post-ARV era. Based on their ability to induce endoplasmic reticulum (ER) stress in various cell types, we hypothesized that ARV-mediated ER stress in the central nervous system resulted in chronic dysregulation of the unfolded protein response and altered amyloid precursor protein (APP) processing. We used in vitro and in vivo models to show that HIV protease inhibitor (PI) class ARVs induced neuronal damage and ER stress, leading to PKR-like ER kinase-dependent phosphorylation of the eukaryotic translation initiation factor 2α and enhanced translation of β-site APP cleaving enzyme-1 (BACE1)...
January 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/27987343/mature-cystic-teratoma-coexisting-with-clear-cell-carcinoma-in-the-ovary
#13
Koki Shimura, Mariko Matsumoto, Takuya Sugahara, Takuro Yamamoto, Nozomi Ogiso, Yoji Urata, Tomoharu Okubo
Mature cystic teratoma (MCT) is the most common benign ovarian tumor; clear-cell carcinoma (CCC) is a relatively common malignant ovarian tumor in Japan, but there are few reports on the coexistence of MCT and CCC. Here we report a case of simultaneous MCT and CCC in the ovary and review the relevant literature. The patient was a 49-year-old woman. A 5-cm MCT was found in the left ovary on initial gynecological examination, and she was referred to hospital for treatment because it was expanding. Magnetic resonance imaging showed a multilocular cystic tumor 16 × 10 × 9...
December 17, 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27982680/distinct-response-of-fat-and-gastrointestinal-tissue-to-glucose-in-gestational-diabetes-mellitus-and-polycystic-ovary-syndrome
#14
D Vejrazkova, O Lischkova, M Vankova, S Stanicka, J Vrbikova, P Lukasova, J Vcelak, G Vacinova, B Bendlova
Gestational diabetes mellitus (GDM) and polycystic ovary syndrome (PCOS) are distinct pathologies with impaired insulin sensitivity as a common feature. The aim of this study was to evaluate the response of fat tissue adipokines and gastrointestinal incretins to glucose load in patients diagnosed with one of the two disorders and to compare it with healthy controls. Oral glucose tolerance test (oGTT) was performed in 77 lean young women: 22 had positive history of GDM, 19 were PCOS patients, and 36 were healthy controls...
December 16, 2016: Physiological Research
https://www.readbyqxmd.com/read/27967242/low-dose-dihydrotestosterone-drives-metabolic-dysfunction-via-cytosolic-and-nuclear-hepatic-androgen-receptor-mechanisms
#15
Stanley Andrisse, Shameka Childress, Yaping Ma, Katelyn Billings, Yi Chen, Ping Xue, Ashley Stewart, Momodou L Sonko, Andrew Wolfe, Sheng Wu
Androgen excess in women is associated with metabolic dysfunction (obesity, hyperinsulinemia, insulin resistance, and increased risk of type 2 diabetes (T2D)) and reproductive dysfunction (polycystic ovaries, amenorrhea, dysregulated gonadotropin release, and infertility). We sought to identify the effects of androgen excess on glucose metabolic dysfunction and the specific mechanisms of action by which androgens are inducing pathology. We developed a mouse model that displayed pathophysiological serum androgen levels with normal body mass/composition to ensure that the phenotypes were directly from androgens and not an indirect consequence of obesity...
December 14, 2016: Endocrinology
https://www.readbyqxmd.com/read/27960241/the-changing-landscape-of-gynaecological-cancer-diagnosis-implications-for-histopathological-practice-in-the-21st-century
#16
REVIEW
Naveena Singh, C Blake Gilks
The era of molecular medicine has led to dramatically improved understanding of the genetic events that give rise to different types of cancers. In the case of gynaecological malignancies, this has resulted in distinct shifts in how these tumours are diagnosed in routine surgical pathology practice, with an increased emphasis on accurate subtype diagnosis. This has happened across all sites in the gynaecological tract and for most cell types, but in ways that are site-specific and may appear to be subtle, as in most instances the diagnostic terminology has not changed...
January 2017: Histopathology
https://www.readbyqxmd.com/read/27959574/porcine-dorsal-root-ganglia-ovarian-neurons-are-affected-by-long-lasting-testosterone-treatment
#17
B Jana, K Palus, K Meller, J Całka
We studied the effect of testosterone overdose on the number, distribution and chemical coding of ovarian neurons in the dorsal root ganglia (DRGs) in pigs. On day 3 of the estrous cycle, the ovaries of both the control and experimental gilts were injected with retrograde tracer Fast Blue. From day 4 of the estrous cycle to the expected day 20 of the second studied cycle, the experimental gilts were injected with testosterone, while the control gilts received oil. After the completion of the protocol the Th16-L5 DRGs were collected...
December 13, 2016: Physiological Research
https://www.readbyqxmd.com/read/27925712/quantitative-assessment-of-nutrition-in-patients-with-polycystic-ovary-syndrome-pcos
#18
Małgorzata Szczuko, Magdalena Skowronek, Marta Zapałowska-Chwyć, Andrzej Starczewski
Background: PCOS (polycystic ovary syndrome) is called a pathology of the XX century and affects at least 10-15% women of childbearing age. The therapy involves pharmacotherapy of hormonal imbalance, as well as the change of lifestyle, including the diet. Objective: Performing the quantitative assessment of components of diets of women with PCOS, comparing the results with current dietary standards for Polish people and defining dietary requirements for the patients...
2016: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/27908216/circulating-omentin-1-levels-in-women-with-polycystic-ovary-syndrome-a-meta-analysis
#19
Yun-Liang Tang, Jiao Yu, Zhen-Guo Zeng, Ying Liu, Jian-Ying Liu, Ji-Xiong Xu
To investigate the association between circulating omentin-1 levels and polycystic ovary syndrome (PCOS) in women, a meta-analysis was performed. A systematic literature search using PubMed, Embase and Web of Science was carried out. Ten articles with 13 studies were included in this meta-analysis, which included a total of 1264 subjects (733 patients with PCOS and 531 controls). The pooled standard mean difference (SMD) and 95% confidence interval (CI) were used to estimate the association between omentin-1 levels and PCOS...
December 2, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27902972/unravelling-site-specific-breast-cancer-metastasis-a-microrna-expression-profiling-study
#20
Willemijne A M E Schrijver, Paul J van Diest, Dutch Distant Breast Cancer Metastases Consortium, Cathy B Moelans
Distant metastasis is still the main cause of death from breast cancer. MicroRNAs (miRs) are important regulators of many physiological and pathological processes, including metastasis. Molecular breast cancer subtypes are known to show a site-specific pattern of metastases formation. In this study, we set out to determine the underlying molecular mechanisms of site-specific breast cancer metastasis by microRNA expression profiling.To identify a miR signature for metastatic breast carcinoma that could predict metastatic localization, we compared global miR expression in 23 primary breast cancer specimens with their corresponding multiple distant metastases to ovary (n=9), skin (n=12), lung (n=10), brain (n=4) and gastrointestinal tract (n=10) by miRCURY microRNA expression arrays...
November 25, 2016: Oncotarget
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