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Uterine activity

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https://www.readbyqxmd.com/read/29453654/uterine-electrical-activity-oxytocin-and-labor-translating-electrical-into-mechanical
#1
Anat Lavie, S Shinar, L Hiersch, E Ashwal, Y Yogev, A Aviram
PURPOSE: Uterine activity plays a crucial role in labor, especially when utero-tonic materials are administered. We aimed to determine the electrical responsiveness of the uterine musculature to labor augmentation with oxytocin using electrical uterine myography (EUM) technology, and to assess whether the kinetics of the EUM device may serve as a predictor for successful vaginal delivery. METHODS: EUM prospectively measured electrical uterine activity in women with singleton gestations at term (≥ 37 + 0 weeks) undergoing labor augmentation by oxytocin administration...
February 16, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29452885/somatolactogens-and-diabetic-retinopathy
#2
REVIEW
Kevin Christian Bermea, Alejandro Rodríguez-García, Andrew Tsin, Hugo Alberto Barrera-Saldaña
IMPORTANCE: Diabetic retinopathy (DR) is one of the most common of all diabetic complications. The number of people with DR in the United States is expected to increase to 16 million by 2050. DR is the leading cause of blindness among working-age adults in many different countries, including the United States. In later DR stages, neovascularization is associated with extensive retinal capillary non-perfusion and vitreo-proliferation leading to retinal detachment. This neovascularization is orchestrated by an imbalance of growth factors in the retina from which somatolactogens (pituitary growth hormone, GH-N; placental growth hormone, GH-V; prolactin, PRL; and placental lactogen, PL, also referred as chorionic somatomammotropin, CSH), may play an important role...
February 6, 2018: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29448806/endovascular-treatment-for-the-control-of-active-vaginal-bleeding-from-uterine-cervical-cancer-treated-with-radiotherapy
#3
Cheng Shi Chen, Sohee Park, Ji Hoon Shin, Yasir Nouri, Jong-Woo Kim, Hyun-Ki Yoon, Gi-Young Ko
Background Endovascular treatment has become a significant therapeutic option for the management of intractable bleeding in gynecologic malignancies. However, the endovascular treatment types were almost never mentioned when active bleeding from different arteries was identified. Purpose To present angiographic details and evaluate clinical efficacy of endovascular treatments to control active vaginal bleeding in uterine cervical cancer patients treated with radiotherapy. Material and Methods In this retrospective study, six, consecutive cervical cancer patients treated with radiotherapy who underwent endovascular treatment for active vaginal bleeding were included...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29447043/re-engineering-the-interpretation-of-electronic-fetal-monitoring-to-identify-reversible-risk-for-cerebral-palsy-a-case-control-series
#4
Mark I Evans, Robert D Eden, David W Britt, Shara M Evans, Barry S Schifrin
BACKGROUND: Even Key Opinion leaders now concede that electronic fetal monitoring (EFM) cannot reliably identify fetal acidemia which many vouch as the only labor mediated pathophysiologic precursor for cerebral palsy (CP). We have developed the "Fetal Reserve Index" - an algorithm combining five dynamic components of EFM (1. Rate, 2. Variability, 3. Accelerations, 4. Decelerations, and 5. Excessive uterine activity) considered individually that are combined with the presence of: 6...
February 15, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29440396/oncogenic-exon-2-mutations-in-mediator-subunit-med12-disrupt-allosteric-activation-of-cyclin-c-cdk8-19
#5
Min Ju Park, Hailian Shen, Jason M Spaeth, Jaana H Tolvanen, Courtney Failor, Jennifer F Knudtson, Jessica McLaughlin, Sunil K Halder, Qiwei Yang, Serdar E Bulun, Ayman Al-Hendy, Robert S Schenken, Lauri A Aaltonen, Thomas G Boyer
Somatic mutations in exon 2 of the RNA polymerase II transcriptional Mediator subunit MED12 occur at high frequency in uterine fibroids (UFs) and breast fibroepithelial tumors as well as recurrently, albeit less frequently, in malignant uterine leimyosarcomas, chronic lymphocytic leukemias, and colorectal cancers. Previously, we reported that UF-linked mutations in MED12 disrupt its ability to activate CycC-dependent kinase 8 (CDK8), implicating impaired Mediator-associated CDK8 activity in the pathogenesis of these clinically significant lesions...
February 13, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29440294/in-vitro-and-in-vivo-activity-of-imgn853-an-antibody-drug-conjugate-targeting-folate-receptor-alpha-linked-to-dm4-in-biologically-aggressive-endometrial-cancers
#6
Gary Altwerger, Elena Bonazzoli, Stefania Bellone, Tomomi Egawa-Takata, Gulden Menderes, Francesca Pettinella, Anna Bianchi, Francesco Riccio, Jacqueline Feinberg, Luca Zammataro, Chanhee Han, Ghanshyam Yadav, Katherine Dugan, Ashley Morneault, Jose F Ponte, Natalia Buza, Pei Hui, Serena Wong, Babak Litkouhi, Elena Ratner, Dan-Arin Silasi, Gloria S Huang, Masoud Azodi, Peter E Schwartz, Alessandro D Santin
Grade 3 endometrioid and uterine serous carcinomas (USC) account for the vast majority of endometrial cancer deaths. The purpose of this study was to determine folic acid receptor alpha (FR⍺) expression in these biologically aggressive (Type II) endometrial cancers,and evaluate FR⍺ as a targetable receptor for IMGN853 (Mirvetuximab soravtansine). The expression of FR⍺ was evaluated by immunohistochemistry (IHC) and flow cytometry in 90 endometrioid and USC samples. The in vitro cytotoxic activity and bystander effect were studied in primary uterine cancer cell lines expressing differential levels of FR⍺...
February 13, 2018: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29439620/acute-drug-effects-on-the-human-placental-tissue-the-development-of-a-placental-murine-xenograft-model
#7
Magali Verheecke, Els Hermans, Sandra Tuyaerts, Erika Souche, Rita Van Bree, Godelieve Verbist, Tina Everaert, Jeroen Van Houdt, Kristel Van Calsteren, Frederic Amant
OBJECTIVE: A pilot study was conducted to establish a human placental xenograft, which could serve as a model to evaluate the effect of toxic exposures during pregnancy. STUDY DESIGN: The protocol consisted of engraftment of third-trimester human placental tissue in immunocompromised mice, after induction of a pseudo-pregnancy state by ovariectomy and progesterone supplementation. To validate the model, the placental tissue before and after engraftment was examined by immunohistochemistry, fluorescence-activated cell sorting (FACS), single-nucleotide polymorphism (SNP) genotyping, and whole transcriptome sequencing (WTSS)...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29439094/uterine-and-placental-distribution-of-selected-extracellular-matrix-ecm-components-in-the-dog
#8
Felix R Graubner, Alois Boos, Selim Aslan, Ibrahim Kücükaslan, Mariusz P Kowalewski
For many years, modifications of the uterine extracellular matrix (ECM) during gestation have not been considered as critical for successful canine (Canis lupus familiaris) pregnancy. However previous reports indicated an effect of free-floating blastocysts on the composition of the uterine ECM. Here, the expression of selected genes involved in structural functions, cell-to-cell communication and inhibition of matrix metalloproteinases were targeted utilizing qPCR and immunohistochemistry. We found that canine free-floating embryos affect gene expression of FN1, ECM1 and TIMP4...
February 9, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29434755/anti-tumour-effects-of-polysaccharide-extracted-from-acanthopanax-senticosus-and-cell-mediated-immunity
#9
Qinglong Meng, Jingzhi Pan, Yajing Liu, Li Chen, Yueying Ren
Acanthopanax senticosus, also known as Siberian ginseng, is widely distributed throughout northern Asia and used in traditional Chinese medicine; it has been reported to prevent a number of diseases. However, the association between the antitumour and immunostimulatory activities of polysaccharide extracted from A. senticosus (ASPS) remains to be elucidated. The aim of the present study was to investigate the anti-tumour and immunomodulatory effects of polysaccharide extracted from ASPS on Crocker sarcoma S180, hepatic carcinoma H22 and uterine cervical carcinoma U14 tumour cell lines implanted in mice...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434492/sr-16234-a-novel-selective-estrogen-receptor-modulator-for-pain-symptoms-with-endometriosis-an-open-label-clinical-trial
#10
Tasuku Harada, Ikuko Ohta, Yusuke Endo, Hiroshi Sunada, Hisashi Noma, Fuminori Taniguchi
Background: SR-16234 is a selective estrogen receptor modulator (SERM) structurally different from approved SERM and has been reported to have estrogen receptor (ER) α antagonistic activity and strong affinity with a weak partial agonistic activity to ERβ receptor. SR-16234 showed strong inhibitory effects on transplanted endometrial cysts in the endometriosis model of rat and mouse. In this clinical trial, efficacy and safety of SR-16234 have been evaluated in endometriosis patients...
December 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/29430972/the-behaviour-of-pelvic-floor-muscles-during-uterine-contractions-in-spontaneous-and-oxytocin-induced-labour
#11
Nazan Karahan, Hediye Arslan, Çetin Çam
Term pregnant women were divided into oxytocin infusion and control groups. The electrical activities of pelvic floor muscles (PFM) were recorded at rest and during contractions electromyographically. The beginning and the end of each contraction were marked on the recorded electromyographic trace. A trace was regarded as 'negative' if no increase in electrical activity was observed and 'positive' if increased electrical activity was observed during the contractions. To evaluate the relative frequency of the areas of electrical activity during uterine contractions (UC) a 'positive electrical activity percentage' was used and calculated as: (total count of positive electrical activity areas)/(total count of UC) × 100...
February 12, 2018: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29430878/placental-implantation-over-prior-cesarean-scar-causes-activation-of-fetal-regulatory-t-cells
#12
Tina A Nguyen, Daniel A Kahn, Andrea I Loewendorf
INTRODUCTION: Maternal-fetal chimerism is miniscule, a testament to the integrity of the uteroplacental interface. The soundness of this border region is potentially altered through cesarean delivery of prior babies with uncertain consequences for the following pregnancies. METHODS: Using multicolor flow cytometry and quantitative PCR of non-inherited maternal antigens we performed a retrospective case control pilot study and formulated the null hypothesis that placental implantation over a prior uterine scar does not result in the presence of memory Treg (CD45RO+) in the fetus...
February 12, 2018: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29423040/systematic-analysis-of-gene-expression-alterations-and-clinical-outcomes-of-stat3-in-cancer
#13
Xiangrong Cui, Xuan Jing, Qin Yi, Chunlan Long, Bin Tan, Xin Li, Xueni Chen, Yue Huang, Zhongping Xiang, Jie Tian, Jing Zhu
Accumulated studies have provided controversial evidences of prognostic value for signal transducer and activator of transcription proteins 3 (STAT3) in cancers. To address this inconsistency, we performed a systematic analysis to determine whether STAT3 can serve as a prognostic marker in human cancers. STAT3 expression was assessed using Oncomine analysis. cBioPortal, Kaplan-Meier Plotter, and Prognoscan were performed to identify the prognostic roles of STAT3 in human cancers. The copy number alteration, mutation, interactive analysis, and visualize the altered networks were performed by cBioPortal...
January 9, 2018: Oncotarget
https://www.readbyqxmd.com/read/29422866/the-balance-of-formula-see-text-secretion-vs-reabsorption-in-the-endometrial-epithelium-regulates-uterine-fluid-ph
#14
Zhang-Dong Xie, Yi-Min Guo, Mei-Juan Ren, Jichun Yang, Shao-Fang Wang, Tong-Hui Xu, Li-Ming Chen, Ying Liu
Uterine fluid contains a high concentration of [Formula: see text] which plays an essential role in sperm capacitation and fertilization. In addition, the [Formula: see text] concentration in uterine fluid changes periodically during the estrous cycle. It is well-known that the endometrial epithelium contains machineries involving the apical SLC26 family anion exchangers for secreting [Formula: see text] into the uterine fluid. In the present study, we find for the first time that the electroneutral Na+/[Formula: see text] cotransporter NBCn1 is expressed at the apical membrane of the endometrial epithelium...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29422210/pathophysiology-of-placental-derived-fetal-growth-restriction
#15
REVIEW
Graham J Burton, Eric Jauniaux
Placental-related fetal growth restriction arises primarily due to deficient remodeling of the uterine spiral arteries supplying the placenta during early pregnancy. The resultant malperfusion induces cell stress within the placental tissues, leading to selective suppression of protein synthesis and reduced cell proliferation. These effects are compounded in more severe cases by increased infarction and fibrin deposition. Consequently, there is a reduction in villous volume and surface area for maternal-fetal exchange...
February 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29420395/ulipristal-acetate-for-treatment-of-symptomatic-uterine-leiomyomas-a-randomized-controlled-trial
#16
James A Simon, William Catherino, James H Segars, Rick E Blakesley, Anna Chan, Vilma Sniukiene, Ayman Al-Hendy
OBJECTIVE: To assess efficacy and tolerability of ulipristal acetate, a selective progesterone receptor modulator, for treatment of symptomatic uterine leiomyomas. METHODS: This phase 3, double-blind, placebo-controlled study enrolled premenopausal women (aged 18-50 years) with abnormal uterine bleeding, one or more discrete leiomyomas, and uterine size 20 weeks of gestation or less. Patients were randomized 1:1:1 to 5 mg ulipristal, 10 mg ulipristal, or placebo once daily for 12 weeks followed by 12-week drug-free follow-up...
February 5, 2018: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29417283/depleted-lamin-b1-a-possible-marker-of-the-involvement-of-senescence-in-endometriosis
#17
Helena Malvezzi, Bruno Gallani Viana, Cristine Dobo, Renee Zon Filippi, Sérgio Podgaec, Carla Azevedo Piccinato
PROPOSE: Endometriosis is a benign disease characterized by implantation and the growth of endometrial tissue outside the uterine cavity and it shares similarities with cancer. Lamin B1, p16 and p21 play a role on cell cycle regulation, development, cell repair and its activities are related to cancers. Considering the similarities between endometriosis and cancer, the aim of the present cross-sectional study is to detect p16, p21 and Lamin B1 in the ectopic endometrium of patients with endometriosis (n = 8) with eutopic (n = 8) and control endometrium (n = 8) and relate them to the maintenance and development of endometriosis...
February 7, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29416642/progesterone-inhibits-contraction-and-increases-trek-1-potassium-channel-expression-in-late-pregnant-rat-uterus
#18
Zongzhi Yin, Yun Li, Wenzhu He, Dan Li, Hongyan Li, Yuanyuan Yang, Bing Shen, Xi Wang, Yunxia Cao, Raouf A Khalil
Objective: The aim of this study was to investigate the effect and mechanism by which progesterone regulates uterine contraction in late pregnant rats. Results: Progesterone caused concentration-dependent relaxation of uterine strips that was enhanced compared with control nontreated uterine strips. Uterine strips incubated with progesterone showed a significant increase in TREK-1 mRNA expression and protein level. TREK-1 inhibitor L-methionine partly reversed uterine relaxation caused by the progesterone, while TREK-1 activator arachidonic acid did not cause significant change in progesterone-induced relaxation...
January 2, 2018: Oncotarget
https://www.readbyqxmd.com/read/29409786/cine-mri-during-spontaneous-cramps-in-women-with-menstrual-pain
#19
Kevin M Hellman, Caroline S Kuhn, Frank F Tu, Katlyn E Dillane, Nathan A Shlobin, Sangeeta Senapati, Xiaojie Zhou, Wei Li, Pottumarthi V Prasad
BACKGROUND: The lack of non-invasive methods to study dysmenorrhea has resulted in poor understanding of the mechanisms underlying pain, insufficient diagnostic tests, and limited treatment options. To address this knowledge gap, we have developed an MRI-based strategy for continuously monitoring the uterus in relation to participants' spontaneous pain perception. OBJECTIVE: The study objective was to evaluate whether MRI can detect real-time changes in myometrial activity during cramping episodes in women with dysmenorrhea, with a hand-held squeeze bulb for pain reporting...
January 31, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29409562/birth-weight-is-associated-with-dietary-factors-at-the-age-of-6-8-years-the-physical-activity-and-nutrition-in-children-panic-study
#20
Aino-Maija Eloranta, Jarmo Jääskeläinen, Taisa Venäläinen, Henna Jalkanen, Sanna Kiiskinen, Aino Mäntyselkä, Ursula Schwab, Virpi Lindi, Timo A Lakka
OBJECTIVE: Low and high birth weight have been associated with increased risk of type 2 diabetes and CVD. Diet could partly mediate this association, e.g. by intra-uterine programming of unhealthy food preferences. We examined the association of birth weight with diet in Finnish children. DESIGN: Birth weight standard deviation score (SDS) was calculated using national birth register data and Finnish references. Dietary factors were assessed using 4 d food records...
February 7, 2018: Public Health Nutrition
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