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https://www.readbyqxmd.com/read/28805353/the-role-of-melatonin-receptor-mtnr1a-in-the-action-of-melatonin-on-bovine-granulosa-cells
#1
Shu-Juan Wang, Wen-Ju Liu, Li-Ke Wang, Xun-Sheng Pang, Li-Guo Yang
Granulosa cells (GCs) play an important role in ovarian follicle growth, development, and follicular atresia. In the present study, we investigated the effects of Melatonin on bovine GCs, and asked if MTNR1A was involved in their response to this indole hormone. Our results indicated that Melatonin inhibited GC apoptosis by up-regulating the expression of BCL2, BCL-XL, GPX4, and SOD1, and down-regulating the expression of BAX, CASP3, and TP53. Moreover, Melatonin modulated bovine GC function by decreasing the expression of INHA, INHBB, FSHR, and TGFBR3, and the abundance of Inhibin β and Activin B, while increasing the expression of LHR, INHBA, and secretion of progesterone by GCs...
August 14, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28804932/kisspeptin-regulates-ovarian-steroidogenesis-during-delayed-embryonic-development-in-the-fruit-bat-cynopterus-sphinx
#2
Anuradha, Amitabh Krishna
Cynopterus sphinx, a fruit bat, undergoes delayed embryonic development during the winter months, a period that corresponds to low levels of progesterone and estradiol synthesis by the ovary. Kisspeptins (KPs) are a group of neuropeptide hormones that act via G-protein coupled receptor 54 (GPR54) to stimulate hypothalamic secretion of Gonadotropin-releasing hormone, thereby regulating ovarian steroidogenesis, folliculogenesis, and ovulation. GPR54 is also expressed in the ovary, suggesting a direct role for KPs in ovarian steroidogenesis...
August 14, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28801919/familial-associations-of-female-breast-cancer-with-other-cancers
#3
Guoqiao Zheng, Hongyao Yu, Akseli Hemminki, Asta Försti, Kristina Sundquist, Kari Hemminki
Familial risks of breast cancer (BC) are well established but whether BC clusters with other, i.e. discordant, cancers is less certain but of interest for the identification of common genetic and possible environmental factors contributing to a general cancer susceptibility. We apply a novel approach to search for familial associations of BC with other (discordant) cancers based on the Swedish Family-Cancer Database. Relative risks (RRs) were calculated for BC in families with increasing numbers of patients with discordant cancer X, and conversely, familial RRs for cancer X in families with increasing numbers of BC patients...
August 12, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28796317/mutation-status-of-rad51c-palb2-and-brip1-in-100-japanese-familial-breast-cancer-cases-without-brca1-and-brca2-mutations
#4
Katsutoshi Sato, Mio Koyasu, Sachio Nomura, Yuri Sato, Mizuho Kita, Yuumi Ashihara, Yasue Adachi, Shinji Ohno, Takuji Iwase, Dai Kitagawa, Eri Nakashima, Reiko Yoshida, Yoshio Miki, Masami Arai
In addition to BRCA1 and BRCA2, RAD51C, PALB2, and BRIP1 are known as breast cancer susceptibility genes. However, the mutation status of these genes in Japanese familial breast cancer cases has not been evaluated yet. To this end, we analyzed the exon sequence and genomic rearrangement of RAD51C, PALB2, and BRIP1 in 100 Japanese patients diagnosed with familial breast and ovarian cancer and without BRCA1 and BRCA2 mutations. We detected a large deletion from exon 6 to 9 in RAD51C, 4 novel BRIP1 missense variants containing 3 novel non-synonymous variants, c...
August 10, 2017: Cancer Science
https://www.readbyqxmd.com/read/28795770/a-national-prospective-observational-study-of-first-recurrence-after-primary-treatment-for-gynecological-cancer-in-norway
#5
Ingvild Vistad, Line Bjørge, Olesya Solheim, Bent Fiane, Kurt Sachse, Jostein Tjugum, Siri Skrøppa, Anne Gry Bentzen, Trine Stokstad, Grete A Iversen, Helga B Salvesen, Gunnar B Kristensen, Anne Dørum
INTRODUCTION: Gynecological cancer patients are routinely followed up for 5 years after primary treatment. However, the value of such follow-up has been debated, as retrospective studies indicate that first recurrence is often symptomatic and occurs within 2-3 years of primary treatment. We prospectively investigated time to first recurrence, symptoms at recurrence, diagnostic procedures, and recurrence treatment in gynecological cancer patients after primary curative treatment. MATERIAL AND METHODS: Clinicians from 21 hospitals in Norway interviewed 680 patients with first recurrence of gynecological cancer (409 ovarian, 213 uterine, and 58 cervical cancer patients) between 2012 and 2016...
August 10, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28791695/use-of-antidepressants-and-risk-of-epithelial-ovarian-cancer
#6
Lina S Mørch, Christian Dehlendorff, Louise Baandrup, Søren Friis, Susanne K Kjaer
Antidepressants are widely prescribed among women to treat depression and anxiety disorders, but studies of their effects on gynecological cancer risk are sparse. We assessed associations between various antidepressants and risk of epithelial ovarian cancer. By using Danish nationwide registers, we identified all women (cases) aged 30 to 84 years with incident epithelial (serous, endometrioid, clear cell or mucinous) ovarian cancer during 2000-2011 (n= 4,103) and matched each case to 20 population controls (n=58,706) by risk-set matching...
August 9, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28791295/fertility-preservation-in-endometriosis-patients-anti-m%C3%A3-llerian-hormone-is-a-reliable-marker-of-the-ovarian-follicle-density
#7
Elisabetta Garavaglia, Cinzia Sala, Gianluca Taccagni, Michela Traglia, Caterina Barbieri, Stefano Ferrari, Massimo Candiani, Paola Panina-Bordignon, Daniela Toniolo
OBJECTIVE: To analyze the ovarian reserve via measurement of follicular density and anti-Müllerian hormone (AMH) in endometriosis patients participating to a clinical program of cortical ovarian cryopreservation. DESIGN: Retrospective analysis of serum AMH levels and prospective investigation of ovarian follicle number. SETTING: University Hospital. PATIENTS: Two hundred and two women with endometriosis and 400 controls...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28789877/fertility-ovarian-reserve-and-cancer
#8
REVIEW
Neerujah Balachandren, Melanie Davies
Improvements in survival rates and the rise in the incidence of cancer, particularly in young people, has shifted the focus of treatment towards less gonadotoxic therapies, such that a larger number of survivors will remain fertile after treatment. Unfortunately, for the vast majority of cancer therapies, there is incomplete data on the extent of injury to the reproductive organs. This review uses case series and cohort studies on conception rates and menstrual cyclicity after gonadotoxic cancer therapies, and relevant studies on ovarian reserve assessment...
July 31, 2017: Maturitas
https://www.readbyqxmd.com/read/28771725/tlr4-and-nf%C3%AE%C2%BAb-signaling-is-critical-for-taxol-resistance-in-ovarian-carcinoma-cells
#9
Nian-Kang Sun, Shang-Lang Huang, Ting-Chang Chang, Chuck C-K Chao
We report here that toll-like receptor 4 (TLR4) and ABCB1 are upregulated in SKOV3 ovarian carcinoma cells that acquired resistance to the anticancer drug taxol. Silencing of TLR4 using short-hairpin RNA sensitized taxol-resistant SKOV3 cells to taxol (4.6 fold), whereas ectopic expression of TLR4 in parental, taxol-sensitive SKOV3 cells or TLR4-null HEK293 cells induced taxol resistance (∼2 fold). A sub-lethal dose of taxol induced ABCB1 protein expression in taxol-resistant SKOV3 cells. Inactivation of TLR4 using chemical inhibitors (CLI-095 and AO-I) downregulated ABCB1 protein expression and enhanced the cytotoxic activity of taxol in taxol-resistant SKOV3 cells...
August 3, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28771721/the-ubiquitin-ligase-trim56-inhibits-ovarian-cancer-progression-by-targeting-vimentin
#10
Lei Zhao, Ping Zhang, Xiao-Jie Su, Bing Zhang
Tumor metastasis is responsible for 90% of all cancer-related deaths. Epithelial to mesenchymal transition (EMT) is an important prerequisite for tumor metastasis. One of the important mediators of EMT and cancer progression in ovarian cancer is the vimentin protein. The objective of the current study was to evaluate the molecular mechanism that regulates vimentin expression in ovarian cancer cells. Vimentin was robustly induced in the ovarian cancer cell line SKOV-3 compared to normal ovarian epithelial cell line Moody and the induction was not due to transcriptional upregulation...
August 3, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28771225/the-ovarian-reserve-is-depleted-during-puberty-in-a-hormonally-driven-process-dependent-on-the-pro-apoptotic-protein-bmf
#11
Seng H Liew, Quynh-Nhu Nguyen, Andreas Strasser, Jock K Findlay, Karla J Hutt
In females, germ cells are maintained in ovarian structures called primordial follicles. The number of primordial follicles in the ovarian reserve is a critical determinant of the length of the fertile lifespan. Despite this significance, knowledge of the precise physiological mechanisms that regulate primordial follicle number is lacking. In this study we show that a wave of primordial follicle depletion occurs during the transition to adulthood in mice. We demonstrate that this sudden and dramatic loss of primordial follicles is hormonally triggered and identify the pro-apoptotic BH3-only protein, BCL-2 modifying factor (BMF), as essential for this process, implicating the intrinsic apoptotic pathway as a key mechanism...
August 3, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28768516/anti-mullerian-hormone-is-linked-to-the-type-of-early-pregnancy-loss-in-idiopathic-recurrent-miscarriage-a-retrospective-cohort-study
#12
Sophie Pils, Natalia Stepien, Christine Kurz, Kazem Nouri, Regina Promberger, Johannes Ott
We correlated Anti-Mullerian hormone (AMH) levels and other parameters for ovarian reserve to the gestational age at the time of pregnancy loss in women with idiopathic recurrent miscarriage. In a retrospective study, 79 patients had suffered a total of 266 miscarriages. When comparing women with an "unembryonic" to those with an "embryonic" most recent miscarriage, there was no difference in median age (36.3 years, IQR 31.6-40.1 versus 34.2 years, IQR 29.9-38.0; p = 0.303) but in median AMH levels (0.7, IQR 0...
August 2, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28760233/biochemical-and-imaging-diagnostics-in-endocrinology-predictors-of-fertility
#13
REVIEW
Erica B Mahany, John F Randolph
One of the limiting factors of fertility testing is the relative inefficiency of human reproduction. A careful history and physical examination must be performed on each patient to inform the particular diagnostic tests that are chosen and to create a meaningful treatment plan. Testing parameters, such as sensitivity, specificity, positive predictive value, and negative predictive value, can help to interpret test results, although there is no perfect screening test for the various causes of infertility. This article describes the 4 major categories of testing for infertility: ovarian reserve, ovulatory status, gamete transport, and male factor...
September 2017: Endocrinology and Metabolism Clinics of North America
https://www.readbyqxmd.com/read/28758506/exposure-to-modern-widespread-environmental-endocrine-disrupting-chemicals-and-their-effect-on-the-reproductive-potential-of-women-an-overview-of-current-epidemiological-evidence
#14
Anetta Karwacka, Dorota Zamkowska, Michał Radwan, Joanna Jurewicz
Growing evidence indicates that exposure to widespread, environmental contaminants called endocrine disruptors (EDCs) negatively affects animal and human reproductive health and has been linked to several diseases including infertility. This review aims to evaluate the impact of environmental exposure to endocrine disrupting chemicals [phthalates, parabens, triclosan, bisphenol A (BPA), organochlorine (PCBs) and perfluorinated (PFCs) compounds] on the reproductive potential among women, by reviewing most recently published literature...
July 31, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28755436/the-diagnostic-accuracy-of-haptoglobin-within-ovarian-cyst-fluid-as-a-potential-point-of-care-test-for-epithelial-ovarian-cancer-an-observational-study
#15
Aniza P Mahyuddin, Lin Liu, Chanqing Zhao, Kothandaraman Narasimhan, Manuel Salto-Tellez, Brendon Nghee Kheem Pang, Diana Gkeok Stzuan Lim, Loganath Annalamai, Jerry K Y Chan, Timothy Yong Kuei Lim, Arijit Biswas, Gregory Rice, Khalil Razvi, Mahesh Choolani
OBJECTIVE: To investigate haptoglobin within ovarian cyst fluid (OCF) as a diagnostic biomarker for epithelial ovarian cancer (EOC) and develop an in vitro diagnostic point-of-care device test (IVDPCT) for use in the operating theatre. DESIGN: Retrospective and prospective cohort study. SETTING: South-East-Asia. POPULATION: Women with suspicious ovarian cysts. METHODS: Proteomic, immunohistochemical and ELISA methods measured haptoglobin in OCF to differentiate benign and EOCs...
July 29, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28752542/steady-relentless-progress-towards-effective-safe-screening-for-early-detection-of-cancer-of-the-ovary
#16
Ian Jacobs
The quest for early detection of ovarian cancer (OC), in the hope of reducing mortality, began as soon as the correlation between stage and survival were documented >50 years ago. Research commenced in earnest in the 1980s when the CA 125 test became available(1) and ultrasound technology was able to image the ovary(2) . The challenges were quickly recognised. Alongside acceptability, compliance and cost two issues needed addressing before large randomised trials with mortality as an end point could be justified...
July 28, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28748634/timing-of-births-and-oral-contraceptive-use-influences-ovarian-cancer-risk
#17
Anna H Wu, Celeste L Pearce, Alice Lee, Chiuchen Tseng, Anjali Jotwani, Prusha Patel, Malcolm C Pike
Increasing parity and duration of combined oral contraceptive (COC) use provide substantial protection against ovarian carcinoma (cancer). There are limited data on the impact of the age of the births or of COC use on reducing ovarian cancer risk. Here, we examined the effects of age at first and last births and age at use of COCs using data from studies conducted in Los Angeles County, California, USA (1,632 cases, 2,340 controls). After adjusting for the number of births, every 5 years that a first birth was delayed reduced the risk of ovarian cancer by 13% (95% CI 5% - 21%; P = 0...
July 27, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28744854/bok-displays-cell-death-independent-tumor-suppressor-activity-in-non-small-cell-lung-carcinoma
#18
Erika Moravcikova, Evzen Krepela, Vera S Donnenberg, Albert D Donnenberg, Kamila Benkova, Tatiana Rabachini, Yuniel Fernandez-Marrero, Daniel Bachmann, Thomas Kaufmann
As the genomic region containing the Bcl-2-related ovarian killer (BOK) locus is frequently deleted in certain human cancers, BOK is hypothesized to have a tumor suppressor function. In the present study, we analyzed primary non-small-cell lung carcinoma (NSCLC) tumors and matched lung tissues from 102 surgically treated patients. We show that BOK protein levels are significantly downregulated in NSCLC tumors as compared to lung tissues (p < 0.001). In particular, we found BOK downregulation in NSCLC tumors of grades two (p = 0...
July 26, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28744698/association-of-basal-serum-androgen-levels-with-ovarian-response-and-icsi-cycle-outcome
#19
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/28742583/endometriosis-and-fertility-preservation
#20
Rebecca Barnett, Nicole Banks, Alan H Decherney
Endometriosis is common, affecting 5% to 10% of reproductive age women. Nearly half of women with surgical evidence of endometriosis fail to achieve spontaneous pregnancy. Surgical treatment of endometriosis can be detrimental to ovarian reserve. In the absence of surgical intervention, ovarian reserve may still be negatively impacted over time. Fertility preservation was developed for women requiring gonadotoxic treatments. Improved methods have led to greater consideration of offering these services to women with other disease processes that threaten ovarian reserve...
September 2017: Clinical Obstetrics and Gynecology
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