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https://www.readbyqxmd.com/read/29913459/clinical-characteristics-and-prognosis-of-pregnancy-associated-breast-cancer-poor-survival-of-luminal-b-subtype
#1
Soo Youn Bae, Seung Pil Jung, Eun Sung Jung, Sung Min Park, Se Kyung Lee, Jong Han Yu, Jeong Eon Lee, Seok Won Kim, Seok Jin Nam
BACKGROUND: Pregnancy-associated breast cancer (PABC) is rare and is generally defined as breast cancer diagnosed during pregnancy or within 1 year of delivery. The average ages of marriage and childbearing are increasing, and PABC is expected to also increase. This study is intended to increase understanding of the characteristics of PABC. METHODS: A database of 2,810 patients with breast cancer diagnosed when they were less than 40 years of age was reviewed. The clinicopathological factors and survival of PABC (40 patients) were compared to those of patients with young breast cancer (YBC, non-pregnant or over 12 months after delivery; 2,770 patients)...
June 18, 2018: Oncology
https://www.readbyqxmd.com/read/29913172/physiological-impacts-of-housing-maned-wolves-chrysocyon-brachyurus-with-female-relatives-or-unrelated-males
#2
Marieke K Jones, Lauren E Reiter, Michael P Gilmore, Elizabeth W Freeman, Nucharin Songsasen
The maned wolf is a threatened canid species native to South America. Previous studies have suggested the species exhibits induced ovulation. In captive breeding facilities, reproductive success is low while rates of neonatal mortality are high. Females that are not recommended for breeding are frequently housed together. However there has never been a systematic study of the reproductive consequences of co-housing females. This study was conducted for three purposes, to: (1) corroborate the presence of induced ovulation, (2) determine whether elevated cortisol is implicated in neonatal pup mortality, and (3) evaluate the endocrine correlates of group housed females...
June 15, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29913170/seasonal-changes-in-plasma-concentrations-of-the-thyroid-glucocorticoid-and-reproductive-hormones-in-the-tegu-lizard-salvator-merianae
#3
Lucas A Zena, Danielle Dillon, Kathleen E Hunt, Carlos A Navas, Kênia C Bícego, C Loren Buck
The tegu lizard Salvator merianae is a large, widely distributed teiid lizard endemic to South America that exhibits annual cycles of high activity during the spring and summer, and hibernation during winter. This pattern of activity and hibernation is accompanied by profound seasonal changes in physiology and behavior, including endothermy during the austral spring. The unusual combination of seasonal endothermy, hibernation and oviparity, in a non-avian, non-mammalian species, makes S. merianae an interesting subject for study of comparative aspects of endocrine regulation of seasonal changes in physiology...
June 15, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29912292/oestrogen-fuels-the-growth-of-endometrial-hyperplastic-lesions-initiated-by-overactive-wnt-%C3%AE-catenin-signalling
#4
Jyoti Goad, Yi-An Ko, Manish Kumar, M Fairuz B Jamaluddin, Pradeep S Tanwar
Unopposed oestrogen results in approximately 80% of all the endometrial cancer patients. The relationship between unopposed oestrogen and endometrial cancer was indicated by the increase in the number of endometrial cancer cases due to the widespread use of oestrogen replacement therapy. Approximately 30% of the endometrial cancer patients have mutations in the Wnt signalling pathway. How the unbalanced ratios of ovarian hormones and the mutations in Wnt signalling pathway interact to cause endometrial cancer is currently unclear...
June 15, 2018: Carcinogenesis
https://www.readbyqxmd.com/read/29911998/hif2%C3%AE-in-the-uterine-stroma-permits-embryo-invasion-and-luminal-epithelium-detachment
#5
Leona Matsumoto, Yasushi Hirota, Tomoko Saito-Fujita, Norihiko Takeda, Tomoki Tanaka, Takehiro Hiraoka, Shun Akaeda, Hidetoshi Fujita, Ryoko Shimizu-Hirota, Shota Igaue, Mitsunori Matsuo, Hirofumi Haraguchi, Mayuko Saito-Kanatani, Tomoyuki Fujii, Yutaka Osuga
Although it has been reported that hypoxia inducible factor 2 α (Hif2a), a major transcriptional factor inducible by low oxygen tension, is expressed in the mouse uterus during embryo implantation, its role in pregnancy outcomes remains unclear. This study aimed to clarify functions of uterine HIF using transgenic mouse models. Mice with deletion of Hif2a in the whole uterus (Hif2a-uKO mice) showed infertility due to implantation failure. Supplementation with progesterone (P4) and leukemia inhibitory factor (LIF) restored decidual growth arrest and aberrant position of implantation sites in Hif2a-uKO mice, respectively, but did not rescue pregnancy failure...
June 18, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29911489/interleukin-13-receptor-alpha-2-expression-in-tumor-cells-is-associated-with-reduced-disease-free-survival-in-patients-with-luminal-subtype-invasive-breast-cancer
#6
Hee Jung Kwon, Jung Eun Choi, Young Kyung Bae
Interleukin-13 receptor alpha 2 is one of the subunits of transmembrane receptor for interleukin-13. The aim of this study was to investigate the prognostic value of interleukin-13 receptor alpha 2 expression in invasive breast cancer. Interleukin-13 receptor alpha 2 expressions were assessed by immunohistochemistry in tissue microarrays of 1283 invasive breast cancer samples, and associations between these expressions and clinicopathological variables and clinical outcomes were investigated. Interleukin-13 receptor alpha 2 expression was observed in 138 (10...
June 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29911323/regulation-of-p38-mitogen-activated-kinase-mediated-fetal-membrane-senescence-by-statins
#7
Martina T Ayad, Brandie D Taylor, Ramkumar Menon
PROBLEM: Oxidative stress (OS)-induced, p38 mitogen-activated protein kinase (p38MAPK)-mediated chorioamniotic senescence and inflammation (senescence-associated secretory phenotype [SASP]) are associated with parturition. In response to OS-inducing risk factors, premature senescence contributes to preterm premature rupture of the membranes (pPROM) and spontaneous preterm birth (PTB). We determined the effect of simvastatin, rosuvastatin, and progesterone in downregulating p38MAPK-mediated senescence and SASP...
June 17, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29910489/does-the-phase-of-the-menstrual-cycle-really-matter-to-anaesthesia
#8
Madhuri S Kurdi, Ashwini H Ramaswamy
The menstrual cycle is a physiological phenomenon that is accompanied by several hormonal fluctuations involving oestrogen and progesterone. Oestrogen and progesterone exert several physiological effects. There are many questions pertaining to the influence of the physiology of menstruation on anaesthesia. We attempted to find out whether the phase of the menstrual cycle can alter the physiological functions during anaesthesia, the perioperative management and outcomes. We performed a literature search in Google Scholar, PubMed and Cochrane databases for original and reviewed articles on the phases of the menstrual cycle and their relation to anaesthesia-related physiological parameters to find an answer to these questions...
May 2018: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/29909564/organized-screening-detects-breast-cancer-at-earlier-stage-regardless-of-molecular-phenotype
#9
Claire M B Holloway, Li Jiang, Marlo Whitehead, Jennifer M Racz, Patti A Groome
PURPOSE: Mortality reduction attributable to organized breast screening is modest. Screening may be less effective at detecting more aggressive cancers at an earlier stage. This study was conducted to determine the relative efficacy of screening mammography to detect cancers at an earlier stage by molecular phenotype. METHODS: We identified 2882 women with primary invasive breast cancer diagnosed between January 1, 2008 and December 31, 2012 and who had a mammogram through the Ontario Breast Screening Program in the 28 months before diagnosis...
June 16, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29907248/micro-rna-181a-suppresses-progestin-promoted-breast-cancer-cell-growth
#10
Muqing Gu, Lijuan Wang, Chun Yang, Xue Li, Chanwei Jia, Stephane Croteau, Xiangyan Ruan, Pierre Hardy
BACKGROUND: Recent investigations have indicated that hormone therapy may increase the risk of breast cancer (BC), and the addition of synthetic progestins may play a critical role in this. Several studies have pointed out the important role of progesterone receptor membrane component 1 (PGRMC1) in the development of BC, especially with hormone therapy using progestins. Although the deregulation of microRNA-181a (miR-181a) is often associated with human BC, the effect of miR-181a on PGRMC1 expression during hormone therapy has not been investigated...
August 2018: Maturitas
https://www.readbyqxmd.com/read/29907137/expression-of-the-glucagon-like-peptide-1-receptor-and-its-role-in-regulating-autophagy-in-endometrial-cancer
#11
Ranka Kanda, Haruko Hiraike, Osamu Wada-Hiraike, Takayuki Ichinose, Kazunori Nagasaka, Yuko Sasajima, Eiji Ryo, Tomoyuki Fujii, Yutaka Osuga, Takuya Ayabe
BACKGROUND: A previous report showed that a glucagon-like peptide-1 receptor (GLP-1R) agonist (exenatide) induced apoptosis in endometrial cancer cells. However, the pathophysiological role of GLP-1R in endometrial cancer has not been fully elucidated. Here, we investigated the effects of the GLP-1R agonist liraglutide in endometrial cancer cells and examined the association between GLP-1R expression and clinicopathological characteristics in endometrial cancer patients. METHODS: Human Ishikawa endometrial cancer cells were treated with different concentrations of liraglutide...
June 15, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29907135/doxorubicin-induced-cardiotoxicity-is-suppressed-by-estrous-staged-treatment-and-exogenous-17%C3%AE-estradiol-in-female-tumor-bearing-spontaneously-hypertensive-rats
#12
Kaytee L Pokrzywinski, Thomas G Biel, Elliot T Rosen, Julia L Bonanno, Baikuntha Aryal, Francesca Mascia, Delaram Moshkelani, Steven Mog, V Ashutosh Rao
BACKGROUND: Doxorubicin (DOX), an anthracycline therapeutic, is widely used to treat a variety of cancer types and known to induce cardiomyopathy in a time and dose-dependent manner. Postmenopausal and hypertensive females are two high-risk groups for developing adverse effects following DOX treatment. This may suggest that endogenous reproductive hormones can in part suppress DOX-induced cardiotoxicity. Here, we investigated if the endogenous fluctuations in 17β-estradiol (E2) and progesterone (P4) can in part suppress DOX-induced cardiomyopathy in SST-2 tumor-bearing spontaneously hypersensitive rats (SHRs) and evaluate if exogenous administration of E2 and P4 can suppress DOX-induced cardiotoxicity in tumor-bearing ovariectomized SHRs (ovaSHRs)...
June 15, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29906665/reproductive-performance-of-bos-indicus-beef-cows-treated-with-different-doses-of-equine-chorionic-gonadotropin-at-the-end-of-a-progesterone-estrogen-based-protocol-for-fixed-time-artificial-insemination
#13
Rafael Herrera Alvarez, Guilherme Pugliesi, Fabio Luis Nogueira Natal, Cecilia Constantino Rocha, Gilmar Arantes Ataide Júnior, Alfredo José Ferreira Melo, Ivani Posar Otzuk, Claudio Alvarenga de Oliveira, Patrice Humblot
Two experiments were performed to evaluate the reproductive performance of zebu beef cows treated with different doses of eCG at the end of a progesterone (P4)/estrogen based protocol for timed artificial insemination (TAI). In Experiment 1, suckling Bos indicus Nelore cows (n = 261) received, on day 0, a progesterone (P4) intravaginal device (PD) and an injection of 1 mg estradiol benzoate (EB). On day 8, the PD was removed, 500 μg of cloprostenol was injected, and cows were assigned to one of the following groups: Control (no treatment), 300 (300 IU of eCG), 600 (600 IU of eCG), and 900 (900 IU of eCG)...
June 8, 2018: Theriogenology
https://www.readbyqxmd.com/read/29906662/hormonal-stimulation-in-4-to-7-months-old-nelore-bos-taurus-indicus-females-improved-ovarian-follicular-responses-but-not-the-in-vitro-embryo-production
#14
Thaís Abritta Zacarias, Taynan Stonoga Kawamoto, João Ricardo Scaliante Júnior, Ana Luiza Silva Guimarães, Maurício Machaim Franco, Ricardo Alamino Figueiredo
The inclusion of pre-pubertal bovine females in reproductive management could allow in vitro embryo production and reduce generation interval, thereby causing faster genetic gain of the herd. However, oocytes of pre-pubertal females have lower competence, blastocyst production, and pregnancy rates than those collected from pubertal animals. This study aimed to evaluate the effect of an induced hormonal stimulation on the serum concentrations of Anti-Mullerian hormone (AMH) and FSH, ovarian responses, ovum pick up (OPU), and in vitro produced embryos (IVP) from oocytes obtained from four-to seven-months old Nelore female cattle...
May 31, 2018: Theriogenology
https://www.readbyqxmd.com/read/29906042/primary-umbilical-endometriosis-villar%C3%A2-s-nodule-case-report
#15
Denise Niza Benardete-Harari, José Manuel Muñoz-de Cote Frade, Jaime Antonio Hidalgo-Carrera, Alberto Felgueres-Hermida, Diego Meraz-Ávila
Background: Umbilical endometriosis or Villar’s nodule is uncommon. Incidence goes up to 0.5-1.2% of all patients with endometriosis. As far as 2012, only 109 cases of umbilical endometriosis have been reported worldwide, there is no incidence reports in Mexico. Clinically, it’s a solitary node, solid and well defined, colored red, blue or black and it’s ocassionally accompanied by bleeding and dysmenorrhea. The treatment can be medical or surgical and it consists of painkillers, and hormonal suppression using GnRH analogues, hormonal contraceptives, danazol or progesterone...
March 2018: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/29905829/two-hormones-for-one-receptor-evolution-biochemistry-actions-and-pathophysiology-of-lh-and-hcg
#16
Livio Casarini, Daniele Santi, Giulia Brigante, Manuela Simoni
Luteinizing hormone (LH) and chorionic gonadotropin (CG) are glycoproteins fundamental for sexual development and reproduction. Since they act on the same receptor (LHCGR), there is a general consensus that LH and hCG are equivalent. However, separate evolution of LHβ and hCGβ subunits occurred in primates, resulting in two molecules sharing ∼85% identity and regulating different physiological events. Pituitary, pulsatile LH production results in a ∼90 min half-life molecule targeting the gonads, to regulate gametogenesis and androgen synthesis...
June 13, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29904427/association-of-serum-interleukin-10-interleukin-17a-and-transforming-growth-factor-%C3%AE-levels-with-human-benign-and-malignant-breast-diseases
#17
Zhuangwei Lv, Min Liu, Jinghui Shen, Dong Xiang, Yunfeng Ma, Yanhong Ji
Interleukin-10 (IL-10), interleukin-17A (IL-17A) and transforming growth factor α (TGF-α) have been implicated in the progression of breast cancer. However, the diagnostic and prognostic roles of these cytokines in ductal carcinoma remain unclear. The present study therefore aimed to determine the serum levels of IL-10, IL-17 and TGF-α in subjects with benign and malignant breast diseases and to evaluate the clinical significance of these cytokines in ductal carcinoma. Pre-operative serum samples were collected from 378 patients with breast disease and 70 healthy subjects...
June 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29903343/amino-acid-transporter-expression-in-the-endometrium-and-conceptus-membranes-during-early-equine-pregnancy
#18
Charlotte Gibson, Marta de Ruijter-Villani, Jolanda Rietveld, Tom A E Stout
Maternally derived amino acids (AA) are essential for early conceptus development, and specific transporters enhance histotrophic AA content during early ruminant pregnancy. In the present study we investigated AA transporter expression in early equine conceptuses and endometrium, during normal pregnancy and after induction of embryo-uterus asynchrony. 'Normal' conceptuses and endometrium were recovered on Days 7, 14, 21 and 28 after ovulation. To investigate asynchrony, Day 8 embryos were transferred to recipient mares on Day 8 or Day 3, and conceptuses were recovered 6 or 11 days later...
June 15, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29903342/circadian-rhythms-of-factors-involved-in-luteal-regression-are-modified-in-p55-tumour-necrosis-factor-receptor-tnfrp55-deficient-mice
#19
Magali Del C de la Vega, María B Delsouc, Ivana Ponce, Vicente Ragusa, Sandra Vallcaneras, Ana C Anzulovich, Marilina Casais
The rhythm of factors involved in luteal regression is crucial in determining the physiological duration of the oestrous cycle. Given the role of tumour necrosis factor (TNF)-α in luteal function and circadian regulation and that most of the effects of TNF-α are mediated by p55 TNF receptor (TNFRp55), the aims of the present study were to analyse the following during the luteal regression phase in the ovary of mice: (1) whether the pattern of expression of progesterone (P4) and the enzymes involved in the synthesis and degradation of P4 is circadian and endogenous (the rhythm persists in constant conditions, (i...
June 15, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29902902/-effect-and-mechanism-of-yunkang-oral-liquid-in-regulating-endocrine-system-and-vegf-signaling-pathway-and-reducing-abortion-rate-in-recurrent-abortion-mice
#20
Bo Chen, Qiu-Qiu Shi, Kai-Lun Liang, Yu-Yue Xu, Ying-Ying Fang, Su-Hong Chen, Gui-Yuan Lyu
This experiment focuses on the effect of Yunkang oral liquid on abortion rate, endocrine system and VEGF signal pathway in Clark classical recurrent abortion model mice. RSA mice were randomly divded into model group, low, middle and high-dose groups and progesterone group. The normal pregnancy mice were included into normal group. Since the first day of pregnancy, the normal group and the RSA model group were given the same dose of distilled water, while low, middle and high-dose groups were given Yunkang oral liquid at the dose of 9, 18, 36 mL·kg¹·d⁻¹; progesterone group were given progesterone by 0...
May 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
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