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https://www.readbyqxmd.com/read/28428364/role-of-oestrogen-receptor-signaling-in-skeletal-response-to-leptin-in-female-ob-ob-mice
#1
Russell T Turner, Kenneth A Philbrick, Amida Kuah, Adam J Branscum, Urszula T Iwaniec
Leptin, critical in regulation of energy metabolism, is also important for normal bone growth, maturation and turnover. Compared to wild type (WT) mice, bone mass is lower in leptin-deficient ob/ob mice; osteopenia in growing ob/ob mice is due to decreased bone accrual, and is associated with reduced longitudinal bone growth, impaired cancellous bone maturation and increased marrow adipose tissue (MAT). However, leptin deficiency also results in gonadal dysfunction, disrupting production of gonadal hormones which regulate bone growth and turnover...
April 20, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28427122/-application-on-the-quantitative-perfusion-parameters-of-dynamic-contrast-enhanced-mri-in-the-pathological-subtype-of-uterine-leiomyoma
#2
J Zheng, Z H Zhao, J F Yang, L Zhao, L M Yang, H J Hu
Objective: To analyze the value of the quantitative perfusion parameters of dynamic contrast-enhanced MRI(DCE-MRI) in the pathological subtype of uterine leiomyoma. Methods: A total of 35 cases of uterine leiomyoma confirmed by surgery and pathology were retrospectively analyzed in Shaoxing People's Hospital from October 2015 to May 2016.All cases underwent DCE-MRI. Quantitative perfusion parameters were prospectively measured and analyzed, including transfer constant (K(trans)) , efflux rate constant (K(ep)), extravascular extracellular space volume ratio (V(e)), blood plasma volume ratio (V(p)), permeability surface area product (PS) and plasma flow (F(p)) , using signal-input two-compartment tracer kinetic models (Extended Tofts model and Exchange model) in 35 leiomyoma cases...
April 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28417191/mapping-of-estradiol-binding-sites-through-receptor-micro-autoradiography-in-the-endometrial-stroma-of-early-pregnant-mice
#3
Telma M T Zorn, Rodolfo R Favaro, Mauricio Soto-Suazo, Walter E Stumpf
Estradiol triggers key biological responses in the endometrium, which rely on the presence and levels of its cognate receptors on target cells. Employing the receptor micro-autoradiography (RMAR) technique, we aimed to provide a temporal and spatial map of the functional binding sites for estradiol in the mouse endometrial stroma during early pregnancy. Uterine samples from days 1.5 to 7.5 of pregnancy were collected 1 h after tritiated- (3H-) estradiol administration and prepared for RMAR analysis. Autoradiographic incorporation of 3H-thymidine (after 1-h pulse) was evaluated over the same gestational interval...
April 17, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28413155/effects-of-natural-environment-on-reproductive-histo-morphometric-dynamics-of-female-dromedary-camel
#4
Hafiz Muhammad Ali, Anas Sarwar Qureshi, Riaz Hussain, Giorgia Urbinati, Mohammad Zahid Mustafa, Farah Ali, Abdul Manan, Liliane Massaad-Massade
Camel shows a seasonal breeding pattern with enhanced reproductive activity during the period of low climatic temperature, high rainfall and better food conditions. Therefore, the study was conducted to explore the underlying seasonal effects on histological dimensions of reproductive tract in adult female one-humped camel (Camelus dromedarius) kept in the natural environment of Pakistan. A total 25 reproductive tracts were collected during spring, summer, autumn and winter seasons and were analysed for histo-morphometric parameters during different environmental conditions...
March 29, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28394884/long-term-hormone-responsive-organoid-cultures-of-human-endometrium-in-a-chemically-defined-medium
#5
Margherita Y Turco, Lucy Gardner, Jasmine Hughes, Tereza Cindrova-Davies, Maria J Gomez, Lydia Farrell, Michael Hollinshead, Steven G E Marsh, Jan J Brosens, Hilary O Critchley, Benjamin D Simons, Myriam Hemberger, Bon-Kyoung Koo, Ashley Moffett, Graham J Burton
In humans, the endometrium, the uterine mucosal lining, undergoes dynamic changes throughout the menstrual cycle and pregnancy. Despite the importance of the endometrium as the site of implantation and nutritional support for the conceptus, there are no long-term culture systems that recapitulate endometrial function in vitro. We adapted conditions used to establish human adult stem-cell-derived organoid cultures to generate three-dimensional cultures of normal and decidualized human endometrium. These organoids expand long-term, are genetically stable and differentiate following treatment with reproductive hormones...
April 10, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28386692/the-usefulness-of-mr-defecography-in-the-evaluation-of-pelvic-floor-dysfunction-our-experience-using-3t-mri
#6
Mahasen S Al-Najar, Ahmed F Ghanem, Saif Aldeen S AlRyalat, Nosaiba T Al-Ryalat, Sultan O Alhajahjeh
PURPOSE: To assess the usefulness of MR defecography in evaluating pelvic floor dysfunction, and to correlate several pelvic organ abnormalities with each other and with patients' symptoms and characteristics. METHODS: MR defecographic examinations performed in 3T MRI machine of 95 patients (70 females, 25 males; mean age 48) were retrospectively reviewed. Pelvic organ abnormalities from all three compartments were recorded, including the anorectal junction descent, anterior rectocele, and cystocele...
April 6, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28373404/precancer-atlas-to-drive-precision-prevention-trials
#7
Avrum Spira, Matthew B Yurgelun, Ludmil Alexandrov, Anjana Rao, Rafael Bejar, Kornelia Polyak, Marios Giannakis, Ali Shilatifard, Olivera J Finn, Madhav Dhodapkar, Neil E Kay, Esteban Braggio, Eduardo Vilar, Sarah A Mazzilli, Timothy R Rebbeck, Judy E Garber, Victor E Velculescu, Mary L Disis, Douglas C Wallace, Scott M Lippman
Cancer development is a complex process driven by inherited and acquired molecular and cellular alterations. Prevention is the holy grail of cancer elimination, but making this a reality will take a fundamental rethinking and deep understanding of premalignant biology. In this Perspective, we propose a national concerted effort to create a Precancer Atlas (PCA), integrating multi-omics and immunity - basic tenets of the neoplastic process. The biology of neoplasia caused by germline mutations has led to paradigm-changing precision prevention efforts, including: tumor testing for mismatch repair (MMR) deficiency in Lynch syndrome establishing a new paradigm, combinatorial chemoprevention efficacy in familial adenomatous polyposis (FAP), signal of benefit from imaging-based early detection research in high-germline risk for pancreatic neoplasia, elucidating early ontogeny in BRCA1-mutation carriers leading to an international breast cancer prevention trial, and insights into the intricate germline-somatic-immunity interaction landscape...
April 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28345486/objective-analysis-of-vaginal-ultrasound-video-clips-for-exploring-uterine-peristalsis-post-vaginal-and-cesarean-section-deliveries
#8
Silvia Gora, David Elad, Ariel J Jaffa
The nonpregnant uterus is characterized by cyclic contractions that assist in sperm transport to the fallopian tube, embryo transport to implantation site, and expulsion of menstrual debris. The effect of post-Cesarean section (CS) scar on uterine peristalsis is unclear, while worldwide the prevalence of CS deliveries is increasing. In this study, we developed a new objective method for analysis of dynamic characteristics of the nonpregnant uterus from transvaginal ultrasound (TVUS) recordings when the uterine cavity is not clearly observed, as may be the case in post-CS uteri...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28323933/research-resource-transcriptional-dynamics-of-cultured-human-villous-cytotrophoblasts
#9
Joshua F Robinson, Mirhan Kapidzic, Matthew Gormley, Katherine Ona, Terrence Dent, Helia Seifikar, Emily G Hamilton, Susan J Fisher
During human pregnancy, cytotrophoblasts (CTBs) play key roles in uterine invasion, vascular remodeling, and anchoring of the feto-placental unit. Due to the challenges associated with studying human placentation in utero, cultured primary villous CTBs are used as a model of the differentiation pathway that leads to invasion of the uterine wall. In vitro, CTBs emulate in vivo cell behaviors, such as migration, aggregation and substrate penetration. While some of the molecular features related to these cell behaviors have been described, the underlying mechanisms, at a global level, remain undefined at mid-gestation...
March 8, 2017: Endocrinology
https://www.readbyqxmd.com/read/28303276/a-parameterized-ultrasound-based-finite-element-analysis-of-the-mechanical-environment-of-pregnancy
#10
Andrea R Westervelt, Michael Fernandez, Michael House, Joy Vink, Chia-Ling Nhan-Chang, Ronald Wapner, Kristin M Myers
Preterm birth is the leading cause of childhood mortality and can lead to health risks in survivors. The mechanical functions of the uterus, fetal membranes, and cervix have dynamic roles to protect the fetus during gestation. To understand their mechanical function and relation to preterm birth, we built a three-dimensional parameterized finite element model of pregnancy. This model is generated by an automated procedure that is informed by maternal ultrasound measurements. A baseline model at 25 weeks of gestation was characterized, and to visualize the impact of cervical structural parameters on tissue stretch, we evaluated the model sensitivity to (1) anterior uterocervical angle, (2) cervical length, (3) posterior cervical offset, and (4) cervical stiffness...
May 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28294441/accuracy-of-pre-operative-real-time-dynamic-transvaginal-ultrasound-sliding-sign-in-prediction-of-pelvic-adhesions-in-women-with-previous-abdominopelvic-surgery-a-prospective-multicenter-double-blinded-study
#11
Amira Ayachi, Rim Bouchahda, Sadok Derouich, Lassaad Mkaouer, Mehdi Kehila, Hassine Abouda, Badis Channoufi, Maha Bouyahia, Marouen Braham, Fethi Zhioua, Haifa Bouchahda, Mechaal Mourali
OBJECTIVE: To highlight the role of the transvaginal ultrasound sliding sign in predicting pelvic adhesions in women with a previous history of abdominopelvic surgery. METHODS: Multicenter prospective, interventional, double blinded study. Patients were examined before the laparoscopy or laparotomy, in gynaecological position, with transvaginal ultrasound (TVU) probe to assess vesico uterine pouch, uterus, ovaries, pouch of Douglas by analysing the gliding between two structures...
March 13, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28281300/the-effect-of-anatomical-placental-location-on-the-third-stage-of-labor
#12
Ulaş Fidan, Mustafa Ulubay, Serkan Bodur, Mehmet Ferdi Kinci, Kazim Emre KaraşahiN, Müfit Cemal Yenen
According to the lower uterine segment and trophotropism hypotheses of placental implantation, placentation occurs in uterine segments with a high blood supply. The present study was designed to determine the clinical implications of these hypotheses by assessing the dynamics of the third stage of labor. Two-hundred and ninety-two prospectively followed pregnant women were assessed at the time of delivery. The uterine locations of the placentas were determined according to the position of the main placental volume and mass under a sagittal view obtained using a centrally located ultrasonography probe...
March 9, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28280497/activation-of-blood-cd3-cd56-cd8-t-cells-during-pregnancy-and-multiple-sclerosis
#13
Clara de Andrés, Lidia Fernández-Paredes, Marta Tejera-Alhambra, Bárbara Alonso, Rocío Ramos-Medina, Silvia Sánchez-Ramón
A striking common feature of most autoimmune diseases is their female predominance, with at least twice as common among women than men in relapsing-remitting multiple sclerosis (MS), the prevailing MS clinical form with onset at childbearing age. This fact, together with the protective effect on disease activity during pregnancy, when there are many biological changes including high levels of estrogens and progesterone, puts sex hormones under the spotlight. The role of natural killer (NK) and NKT cells in MS disease beginning and course is still to be elucidated...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28278173/circulating-progenitor-and-angiogenic-cell-frequencies-are-abnormally-static-over-pregnancy-in-women-with-preconception-diabetes-a-pilot-study
#14
Patricia D A Lima, Zhilin Chen, Aysha Tayab, Malia S Q Murphy, Jessica Pudwell, Graeme N Smith, B Anne Croy
Type 1 and 2 diabetes decrease the frequencies and functional capacities of circulating angiogenic cells (CAC). Diabetes also elevates gestational complications. These observations may be interrelated. We undertook pilot studies to address the hypothesis that preconception diabetes deviates known gestational increases in CACs. Cross-sectional study of type 1 diabetic, type 2 diabetic and normoglycemic pregnant women was conducted at 1st, 2nd, and 3rd trimester and compared to a 6mo postpartum surrogate baseline...
2017: PloS One
https://www.readbyqxmd.com/read/28273332/comparison-between-model-predicted-tumor-oxygenation-dynamics-and-vascular-flow-related-doppler-indices
#15
Antonella Belfatto, Ailyn M Vidal Urbinati, Delia Ciardo, Dorella Franchi, Federica Cattani, Roberta Lazzari, Barbara A Jereczek-Fossa, Roberto Orecchia, Guido Baroni, Pietro Cerveri
PURPOSE: Mathematical modeling is a powerful and flexible method to investigate complex phenomena. It discloses the possibility of reproducing expensive as well as invasive experiments in a safe environment with limited costs. This makes it suitable to mimic tumor evolution and response to radiotherapy although the reliability of the results remains an issue. Complexity reduction is therefore a critical aspect in order to be able to compare model outcomes to clinical data. Among the factors affecting treatment efficacy, tumor oxygenation is known to play a key role in radiotherapy response...
March 8, 2017: Medical Physics
https://www.readbyqxmd.com/read/28256208/mu-opioid-receptor-in-the-human-endometrium-dynamics-of-its-expression-and-localization-during-the-menstrual-cycle
#16
Lide Totorikaguena, Estibaliz Olabarrieta, Roberto Matorras, Edurne Alonso, Ekaitz Agirregoitia, Naiara Agirregoitia
OBJECTIVE: To study the dynamics of the expression and localization of the mu opioid receptor (MOR) in human endometrium throughout the menstrual cycle. DESIGN: Analysis of human endometrial samples from different menstrual cycle phases (menstrual, early/midproliferative, late proliferative/early secretory, midsecretory, and late secretory) by reverse transcription-polymerase chain reaction, Western blot, and immunohistochemistry. SETTING: Academic research laboratory...
April 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28243063/novel-5-oxo-hexahydroquinoline-derivatives-design-synthesis-in-vitro-p-glycoprotein-mediated-multidrug-resistance-reversal-profile-and-molecular-dynamics-simulation-study
#17
Omolbanin Shahraki, Najmeh Edraki, Mehdi Khoshneviszadeh, Farshid Zargari, Sara Ranjbar, Luciano Saso, Omidreza Firuzi, Ramin Miri
Overexpression of the efflux pump P-glycoprotein (P-gp) is one of the important mechanisms of multidrug resistance (MDR) in many tumor cells. In this study, 26 novel 5-oxo-hexahydroquinoline derivatives containing different nitrophenyl moieties at C4 and various carboxamide substituents at C3 were designed, synthesized and evaluated for their ability to inhibit P-gp by measuring the amount of rhodamine 123 (Rh123) accumulation in uterine sarcoma cells that overexpress P-gp (MES-SA/Dx5) using flow cytometry...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28238320/-oxytocin-administration-during-spontaneous-labour-guidelines-for-clinical-practice-guidelines-short-text
#18
C Dupont, M Carayol, C Le Ray, C Barasinski, R Beranger, A Burguet, A Chantry, C Chiesa, B Coulm, A Evrard, C Fischer, L Gaucher, C Guillou, F Leroy, E Phan, A Rousseau, V Tessier, F Vendittelli, C Deneux-Tharaux, D Riethmuller
OBJECTIVES: To define the different stages of spontaneous labour. To determine the indications, modalities of use and the effects of administering synthetic oxytocin. And to describe undesirable maternal and perinatal outcomes associated with the use of synthetic oxytocin. METHOD: A systematic review was carried out by searching Medline database and websites of obstetrics learned societies until March 2016. RESULTS: The 1st stage of labor is divided in a latence phase and an active phase, which switch at 5cm of cervical dilatation...
January 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/28211648/cognitive-development-in-preterm-infants-multi-faceted-deficits-reflect-vulnerability-of-rigorous-neurodevelopmental-pathways
#19
Jessie R Maxwell, Tracylyn R Yellowhair, Akosua Y Oppong, Jenny E Camacho, Jean R Lowe, Lauren L Jantzie, Robin K Ohls
Prematurity remains the major cause of neonatal morbidity and mortality, with 15 million preterm births occurring worldwide in 2010. Infants born less than 37 weeks gestation are at high risk of abnormal neurodevelopmental outcomes, given that the central nervous system is extremely sensitive to an abnormal intra- and extra-uterine environment. Children born preterm have multiple neurodevelopmental sequelae involving dynamic and complex cognitive deficits. Former preterm infants have difficulty with each domain of cognition, including executive function, language, learning and memory, complex attention, perceptual-motor function and social cognition when compared to children born at term...
February 17, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28193233/tacrolimus-in-the-prevention-of-adverse-pregnancy-outcomes-and-diabetes-associated-embryopathies-in-obese-and-diabetic-mice
#20
Ahmad J H Albaghdadi, Melanie A Hewitt, Samantha M Putos, Michael Wells, Terence R S Ozolinš, Frederick W K Kan
BACKGROUND: T2DM is a high-risk pregnancy with adverse fetal and maternal outcomes including repeated miscarriages and fetal malformations. Despite the established association between placental insufficiency and poor maternal Th1-adaptability to the development of pregnancy complications in T2DM, there have been no established data to assess benefits of pre-pregnancy immunosuppression relative to gestational outcomes in T2DM. We hypothesized that pre-pregnancy macrolide immune suppression can re-establish normal placental development and uterine vascular adaptation in a mouse model of obesity-associated T2DM...
February 13, 2017: Journal of Translational Medicine
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