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https://www.readbyqxmd.com/read/28930786/the-relationship-between-2009-pandemic-h1n1-influenza-during-pregnancy-and-preterm-birth-a-population-based-cohort-study
#1
Deshayne B Fell, Robert W Platt, Olga Basso, Kumanan Wilson, Jay S Kaufman, David L Buckeridge, Jeffrey C Kwong
BACKGROUND: Previous studies of maternal influenza illness and preterm birth have yielded inconsistent results. Our objective was to assess the association between 2009 pandemic H1N1 (pH1N1) influenza during pregnancy and preterm birth in a large obstetrical population. METHODS: We linked a province-wide birth registry with health administrative databases to identify influenza-coded hospitalizations, emergency department visits, or physician visits among pregnant women during the 2009 H1N1 pandemic (our proxy for clinical pH1N1 influenza illness)...
September 19, 2017: Epidemiology
https://www.readbyqxmd.com/read/28930664/aryl-hydrocarbon-receptor-controls-monocyte-differentiation-into-dendritic-cells-versus-macrophages
#2
Christel Goudot, Alice Coillard, Alexandra-Chloé Villani, Paul Gueguen, Adeline Cros, Siranush Sarkizova, Tsing-Lee Tang-Huau, Mylène Bohec, Sylvain Baulande, Nir Hacohen, Sebastian Amigorena, Elodie Segura
After entering tissues, monocytes differentiate into cells that share functional features with either macrophages or dendritic cells (DCs). How monocyte fate is directed toward monocyte-derived macrophages (mo-Macs) or monocyte-derived DCs (mo-DCs) and which transcription factors control these differentiation pathways remains unknown. Using an in vitro culture model yielding human mo-DCs and mo-Macs closely resembling those found in vivo in ascites, we show that IRF4 and MAFB were critical regulators of monocyte differentiation into mo-DCs and mo-Macs, respectively...
September 19, 2017: Immunity
https://www.readbyqxmd.com/read/28928981/association-of-neovascular-glaucoma-with-risk-of-stroke-a-population-based-cohort-study
#3
Cheng-Wen Su, Yue-Cune Chang, Cheng-Li Lin, Hsin-Yi Chen
Neovascular glaucoma (NVG), caused by ocular ischemia, is a serious ocular disease complicated by intractably increased intraocular pressure. Cerebrovascular accidents are classified into ischemic and hemorrhagic stroke. Based on the similar pathogenic mechanisms of NVG and ischemic stroke, we investigated the relationship between NVG and stroke by using a nationally representative sample. This study included 416 NVG patients and 4160 controls. Medical comorbidities were also evaluated. The cumulative incidence of ischemic stroke was 15...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28925979/a-new-quaternion-based-kalman-filter-for-real-time-attitude-estimation-using-the-two-step-geometrically-intuitive-correction-algorithm
#4
Kaiqiang Feng, Jie Li, Xiaoming Zhang, Chong Shen, Yu Bi, Tao Zheng, Jun Liu
In order to reduce the computational complexity, and improve the pitch/roll estimation accuracy of the low-cost attitude heading reference system (AHRS) under conditions of magnetic-distortion, a novel linear Kalman filter, suitable for nonlinear attitude estimation, is proposed in this paper. The new algorithm is the combination of two-step geometrically-intuitive correction (TGIC) and the Kalman filter. In the proposed algorithm, the sequential two-step geometrically-intuitive correction scheme is used to make the current estimation of pitch/roll immune to magnetic distortion...
September 19, 2017: Sensors
https://www.readbyqxmd.com/read/28923576/dose-escalation-intensity-modulated-radiotherapy-based-concurrent-chemoradiotherapy-is-effective-for-advanced-stage-thoracic-esophageal-squamous-cell-carcinoma
#5
Chia-Lun Chang, Hsieh-Chih Tsai, Wei-Cheng Lin, Jer-Hwa Chang, Han-Lin Hsu, Jyh-Ming Chow, Kevin Sheng-Po Yuan, Alexander T H Wu, Szu-Yuan Wu
PURPOSE: No studies have investigated the effects of irradiation-dose escalation intensity-modulated radiotherapy (IMRT)-based concurrent chemoradiotherapy (CCRT) in patients with thoracic esophageal squamous cell carcinoma (TESCC). PATIENTS AND METHODS: We analyzed data from patients with TESCC who were enrolled in the Taiwan Cancer Registry database. To compare treatment outcomes, the patients were categorized into two groups according to their radiotherapy doses: group 1, who received CCRT<60Gy with IMRT, and group 2, who received CCRT≥60Gy with IMRT...
September 15, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28923513/a-dioxin-like-compound-induces-hyperplasia-and-branching-morphogenesis-in-mouse-mammary-gland-through-alterations-in-tgf-%C3%AE-1-and-aryl-hydrocarbon-receptor-signaling
#6
Miret Noelia, Rico-Leo Eva, Pontillo Carolina, Zotta Elsa, Fernández-Salguero Pedro, Randi Andrea
Hexachlorobenzene (HCB) is a widespread environmental pollutant and a dioxin-like compound that binds weakly to the aryl hydrocarbon receptor (AhR). Because AhR and transforming growth factor β1 (TGF-β1) converge to regulate common signaling pathways, alterations in this crosstalk might contribute to developing preneoplastic lesions. The aim of this study was to evaluate HCB action on TGF-β1 and AhR signaling in mouse mammary gland, through AhR+/+ and AhR-/- models. Results showed a differential effect in mouse mammary epithelial cells (NMuMG), depending on the dose: 0...
September 15, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28922406/loss-of-liver-specific-and-sexually-dimorphic-gene-expression-by-aryl-hydrocarbon-receptor-activation-in-c57bl-6-mice
#7
Rance Nault, Kelly A Fader, Jack R Harkema, Tim Zacharewski
The aryl hydrocarbon receptor (AhR) is a highly conserved transcription factor that mediates a broad spectrum of species-, strain-, sex-, age-, tissue-, and cell-specific responses elicited by structurally diverse ligands including 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Dose-dependent effects on liver-specific and sexually dimorphic gene expression were examined in male and female mice gavaged with TCDD every 4 days for 28 or 92 days. RNA-seq data revealed the coordinated repression of 181 genes predominately expressed in the liver including albumin (3...
2017: PloS One
https://www.readbyqxmd.com/read/28922086/assessment-of-ah-receptor-transcriptional-activity-mediated-by-halogenated-dibenzo-p-dioxins-and-dibenzofurans-pxdd-fs-in-human-and-mouse-cell-systems
#8
Kari L Organtini, Troy D Hubbard, Gary H Perdew, Frank L Dorman
Polybrominated and mixed bromo/chloro dibenzo-p-dioxins and dibenzofurans (PXDD/Fs) are emerging environmental contaminants of concern. Thus far, an understanding of the toxicological behavior of these chemical species and their impact upon human health is incomplete. Here we utilized human and mouse hepatocellular carcinoma cell lines to examine the ability of differentially halogenated PXDD/F congeners to induce aryl hydrocarbon receptor (AHR)-mediated transcriptional activity. Dose-response experiments in reporter cell lines identified varied potencies among differentially halogenated PXDD/F isomers by comparison of EC50 values relative to the prototypical AHR agonist, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)...
September 18, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28921036/long-term-outcomes-and-predictors-of-failure-after-surgery-for-stage-iv-apical-pelvic-organ-prolapse
#9
Brian J Linder, Sherif A El-Nashar, Alain A Mukwege, Amy L Weaver, Michaela E McGree, Deborah J Rhodes, John B Gebhart, Christopher J Klingele, John A Occhino, Emanuel C Trabuco
INTRODUCTION AND HYPOTHESIS: The aim of this study was to compare outcomes after uterosacral ligament suspension (USLS) or sacrocolpopexy for symptomatic stage IV apical pelvic organ prolapse (POP) and evaluate predictors of prolapse recurrence. METHODS: The medical records of patients managed surgically for stage IV apical POP from January 2002 to June 2012 were reviewed. A follow-up survey was sent to these patients. The primary outcome, prolapse recurrence, was defined as recurrence of prolapse symptoms measured by validated questionnaire or surgical retreatment...
September 18, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28920102/does-the-aryl-hydrocarbon-receptor-regulate-pluripotency
#10
Chia-I Ko, Alvaro Puga
Recent evidence from embryonic stem cells suggests that the aryl hydrocarbon receptor (AHR) plays a central role in the regulation of pluripotency, a short-lived property of cells in the early blastula inner cell mass (ICM). Four key observations support this conclusion. The first is the temporal association between upregulation of AHR expression and the onset of cell differentiation, which argues for the AHR as a determinant of cell fate decisions. The second is the repression of the pluripotency factors OCT4 and NANOG by the AHR, which depresses their function and contributes to the cell's exit from pluripotency...
February 2017: Current Opinion in Toxicology
https://www.readbyqxmd.com/read/28917384/serious-infections-among-a-large-cohort-of-subjects-with-systemically-treated-psoriasis
#11
Allison S Dobry, Charles P Quesenberry, G Thomas Ray, Jamie L Geier, Maryam M Asgari
BACKGROUND: Biologic therapy is effective for treatment of moderate-to-severe psoriasis but may be associated with an increased risk for serious infection. OBJECTIVE: To estimate the serious infection rate among patients with psoriasis treated with biologic as compared with nonbiologic systemic agents within a community-based health care delivery setting. METHODS: We identified 5889 adult Kaiser Permanente Northern California health plan members with psoriasis who had ever been treated with systemic therapies and calculated the incidence rates and 95% confidence intervals (CIs) for serious infections over 29,717 person-years of follow-up...
September 13, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28916285/profiling-of-bisphenol-s-towards-nuclear-receptors-activities-in-human-reporter-cell-lines
#12
Ondrej Zenata, Zdenek Dvorak, Radim Vrzal
Bisphenol S (BPS) is heat-stable structural analog of bisphenol A (BPA), a known endocrine disruptor. Due to the effort to replace BPA with BPS, it is essential to know if BPS is suitable non-toxic replacement without reported deleterious effects of BPA. Since most of the BPA effects are ascribed to its ability to activate nuclear receptors, we screened some prominent members of this family in order to confirm or refute some recent findings. We found that BPS insignificantly activated aryl hydrocarbon receptor (AhR) in reporter gene assay and no induction of AhR target gene CYP1A1 was observed in human hepatocytes (HH)...
September 12, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28913403/relative-impact-of-hospital-and-surgeon-procedure-volumes-on-primary-total-hip-arthroplasty-revision-a-nationwide-cohort-study-in-france
#13
Chloé Le Cossec, Sandrine Colas, Mahmoud Zureik
BACKGROUND: Both surgeon and hospital procedure volumes have been found to be associated with total hip arthroplasty (THA) outcomes. However, little research has been conducted on the relative influence. We studied the association between THA survivorship and both hospital and surgeon procedure volumes, considering their relative impact. METHODS: A population-based cohort included all patients aged ≥40 years having received a unilateral primary THA from 2010 to 2011, from the French National Health Insurance Database...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28911353/persistently-high-early-mortality-despite-rapid-diagnostics-for-drug-resistant-tuberculosis-cases-in-south-africa
#14
K Schnippel, C Firnhaber, N Ndjeka, F Conradie, L Page-Shipp, R Berhanu, E Sinanovic
OBJECTIVE: To describe the timing and predictors of mortality among multidrug- and rifampicin-resistant tuberculosis (MDR/RR-TB) patients reported in the South African electronic drug-resistant TB register (EDRweb), 2012-2014. DESIGN: We present time-to-event survival analysis and Cox proportional hazards regression. Identity numbers were matched to the National Vital Statistics Register. RESULTS: Of the 20 653 patients included in the analysis (median age 35 years, interquartile range 28-43), over half were male (n = 10 944, 53...
October 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28910589/persistent-organic-pollutants-and-related-biological-responses-measured-in-coastal-fish-using-chemical-and-biological-screening-methods
#15
Zhanna Tairova, Jakob Strand, Rossana Bossi, Martin M Larsen, Lars Förlin, Anders Bignert, Jenny Hedman, Jens Gercken, Thomas Lang, Nicolai F Fricke, Gert Asmund, Manhai Long, Eva C Bonefeld-Jørgensen
The aim of this study was to investigate the spatial distribution, levels of dioxin-like compounds (DLC), and biological responses in two fish species. The viviparous eelpout (Zoarces viviparus) was collected from various locations in the Baltic Sea and in fjords of Kattegat and Skagerrak, while shorthorn sculpin (Myoxocephalus scorpius) was obtained at the polychlorinated biphenyl (PCB) polluted site in North West Greenland. Significant differences were detected both in contaminant levels and relative contributions from either polychlorinated dibenzodioxins (PCDD) or polychlorinated dibenzofurans (PCDF or furans) and mono-ortho- and non-ortho (coplanar) polychlorinated biphenyls (dl-PCB)...
September 14, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28904176/the-crystal-structure-of-the-ahrr-arnt-heterodimer-reveals-the-structural-basis-of-the-repression-of-ahr-mediated-transcription
#16
Shunya Sakurai, Toshiyuki Shimizu, Umeharu Ohto
2,3,7,8-Tetrachlorodibenzo-p-dioxin and related compounds (TCDDs) are extraordinarily potent environmental toxic pollutants. Most of the TCDD toxicities are mediated by aryl hydrocarbon receptor (AhR), a ligand-dependent transcription factor belonging to the basic helix-loop-helix-Per-ARNT-Sim (bHLH-PAS) family. Upon ligand binding, AhR forms a heterodimer with AhR nuclear translocator (ARNT) and induces the expression of genes involved in various biological responses. One of the genes induced by AhR encodes AhR repressor (AhRR), which also forms a heterodimer with ARNT and represses the activation of AhR-dependent transcription...
September 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28903507/cd4-cd8-ratio-and-cd8-count-as-prognostic-markers-for-mortality-in-human-immunodeficiency-virus-infected-patients-on-antiretroviral-therapy-the-antiretroviral-therapy-cohort-collaboration-art-cc
#17
Adam Trickey, Margaret T May, Philipp Schommers, Jan Tate, Suzanne M Ingle, Jodie L Guest, M John Gill, Robert Zangerle, Mike Saag, Peter Reiss, Antonella d'Arminio Monforte, Margaret Johnson, Viviane D Lima, Tim R Sterling, Matthias Cavassini, Linda Wittkop, Dominique Costagliola, Jonathan A C Sterne
Background: We investigated whether CD4:CD8 ratio and CD8 count were prognostic for all-cause, AIDS, and non-AIDS mortality in virologically suppressed patients with high CD4 count. Methods: We used data from 13 European and North American cohorts of human immunodeficiency virus-infected, antiretroviral therapy (ART)-naive adults who started ART during 1996-2010, who were followed from the date they had CD4 count ≥350 cells/μL and were virologically suppressed (baseline)...
September 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28903447/locoregionally-recurrent-head-and-neck-squamous-cell-carcinoma-incidence-survival-prognostic-factors-and-treatment-outcomes
#18
Jer-Hwa Chang, Chia-Che Wu, Kevin Sheng-Po Yuan, Alexander T H Wu, Szu-Yuan Wu
PURPOSE: For locoregionally recurrent head and neck squamous cell carcinoma (HNSCC), appropriate therapeutic decisions remain unclear. We examined the treatment outcomes of a national cohort to determine suitable treatments for and prognostic factors in patients with locoregionally recurrent HNSCCs at different stages and sites. PATIENTS AND METHODS: We analyzed data of >20-year-old patients with HNSCC at American Joint Committee on Cancer clinical stages I-IV without metastasis from Taiwan National Health Insurance and cancer registry databases...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28903015/kept-clinical-visits-as-scheduled-in-the-first-6-months-of-antiretroviral-treatment-determine-long-term-treatment-outcomes-in-people-living-with-hiv-a-large-retrospective-cohort-study-in-china
#19
Shu Su, Limin Mao, Jianmei He, Xiuqing Wei, Jun Jing, Xi Chen, Lei Zhang
Background: Routine HIV clinical monitoring is vital for people living with HIV (PLHIV) after treatment initiation. The relationship between clinical visits during the first 6 months after initial antiretroviral therapy (ART) and long-term, HIV-related mortality and service retention was investigated. Methods: A retrospective ART observational research database was established based on de-identified data extracted from 6959 records of adult HIV-positive registrants held by Hunan CDC (Center for Disease Control and Prevention) between 2003 and 2013...
September 14, 2017: Sexual Health
https://www.readbyqxmd.com/read/28895118/distressing-symptoms-disability-and-hospice-services-at-the-end-of-life-prospective-cohort-study
#20
Thomas M Gill, Ling Han, Linda Leo-Summers, Evelyne A Gahbauer, Heather G Allore
OBJECTIVES: To evaluate the relationship between the presence and number of restricting symptoms and number of disabilities and subsequent admission to hospice at the end of life. DESIGN: Prospective cohort study. SETTING: Greater New Haven, Connecticut, from March 1998 to December 2014. PARTICIPANTS: Decedents from a cohort of 754 persons aged 70 and older (N = 56). MEASUREMENTS: Hospice admissions were identified primarily from Medicare claims, and 15 restricting symptoms and disability in 13 activities were assessed during monthly interviews...
September 12, 2017: Journal of the American Geriatrics Society
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