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https://www.readbyqxmd.com/read/28715276/cancer-incidence-after-in-utero-exposure-to-ionizing-radiation-in-techa-river-residents
#1
L Yu Krestinina, Yu E Kharyuzov, S B Epiphanova, E I Tolstykh, I Deltour, J Schüz, A V Akleyev
Health effects of in utero exposure to ionizing radiation, especially among adults, are still unclear. The aim of this study was to analyze cancer risk in a cohort of subjects exposed in utero due to releases of nuclear waste into the Techa River in the Southern Urals, taking into account additional postnatal exposure. Analysis for solid cancer was based on 242 cases among 10,482 cohort members, accumulating 381,948 person-years at risk, with follow-up from 1956-2009, while analysis for hematological malignancies was based on 26 cases among 11,070 persons, with 423,502 person-years at risk, with follow-up from 1953-2009...
July 17, 2017: Radiation Research
https://www.readbyqxmd.com/read/28692406/mortality-from-circulatory-diseases-and-other-non-cancer-outcomes-among-nuclear-workers-in-france-the-united-kingdom-and-the-united-states-inworks
#2
Michael Gillies, David B Richardson, Elisabeth Cardis, Robert D Daniels, Jacqueline A O'Hagan, Richard Haylock, Dominique Laurier, Klervi Leuraud, Monika Moissonnier, Mary K Schubauer-Berigan, Isabelle Thierry-Chef, Ausrele Kesminiene
Positive associations between external radiation dose and non-cancer mortality have been made in a number of published studies, primarily of populations exposed to high-dose, high-dose-rate ionizing radiation. The goal of this study was to determine whether external radiation dose was associated with non-cancer mortality in a large pooled cohort of nuclear workers exposed to low-dose radiation accumulated at low dose rates. The cohort comprised 308,297 workers from France, United Kingdom and United States. The average cumulative equivalent dose at a tissue depth of 10 mm [Hp(10)] was 25...
July 10, 2017: Radiation Research
https://www.readbyqxmd.com/read/28685638/a-review-of-dosimetry-used-in-epidemiological-studies-considered-to-evaluate-the-linear-no-threshold-lnt-dose-response-model-for-radiation-protection
#3
John E Till, Harold L Beck, Helen A Grogan, Emily A Caffrey
BACKGROUND: Accurate dosimetry is key to deriving the dose response from radiation exposure in an epidemiological study. It becomes increasingly important to estimate dose as accurately as possible when evaluating low dose and low dose rate as the calculation of excess relative risk per Gray (ERR/Gy) is very sensitive to the number of excess cancers observed, and this can lead to significant errors if the dosimetry is of poor quality. By including an analysis of the dosimetry, we gain a far better appreciation of the robustness of the work from the standpoint of its value in supporting the shape of the dose response curve at low doses and low dose rates...
July 7, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28676789/importance-of-the-sequence-directed-dna-shape-for-specific-binding-site-recognition-by-the-estrogen-related-receptor
#4
Kareem Mohideen-Abdul, Karima Tazibt, Maxime Bourguet, Isabelle Hazemann, Isabelle Lebars, Maria Takacs, Sarah Cianférani, Bruno P Klaholz, Dino Moras, Isabelle M L Billas
Most nuclear receptors (NRs) bind DNA as dimers, either as hetero- or as homodimers on DNA sequences organized as two half-sites with specific orientation and spacing. The dimerization of NRs on their cognate response elements (REs) involves specific protein-DNA and protein-protein interactions. The estrogen-related receptor (ERR) belongs to the steroid hormone nuclear receptor (SHR) family and shares strong similarity in its DNA-binding domain (DBD) with that of the estrogen receptor (ER). In vitro, ERR binds with high affinity inverted repeat REs with a 3-bps spacing (IR3), but in vivo, it preferentially binds to single half-site REs extended at the 5'-end by 3 bp [estrogen-related response element (ERREs)], thus explaining why ERR was often inferred as a purely monomeric receptor...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28676139/object-decision-and-multiple-sclerosis-a-preliminary-study
#5
N Caputi, A Matrella, Rocco Totaro, C Raparelli, S Pontecorvo, D Di Giacomo, D Passafiume
The aim of this research was to study cognitive dysfunctions in multiple sclerosis (MS) by exploring subtle cognitive tasks, usually not included in the standard neuropsychological assessment. We wished to investigate whether it is possible to identify object decision deficits in MS patients without evident cognitive impairment; secondary objectives were to understand whether these deficits can be detected in the early stages of the disease and whether there are differences related to different phenotypes. Participants were divided into four groups: (a) 12 patients with early relapsing-remitting MS [ERR]; (b) 14 with late relapsing-remitting MS [LRR]; (c) 10 with secondary progressive MS [SP]; (d) 36 healthy controls [HCs]...
April 2017: Functional Neurology
https://www.readbyqxmd.com/read/28675939/homoisoflavanones-with-estrogenic-activity-from-the-rhizomes-of-polygonatum-sibiricum
#6
Hui Chen, Yu-Jie Li, Xiao-Fei Li, Yan-Jun Sun, Hong-Wei Li, Fang-Yi Su, Yan-Gang Cao, Yan-Li Zhang, Xiao-Ke Zheng, Wei-Sheng Feng
A new homoisoflavanone, (3R)-5-hydroxy-7-methoxyl-3-(2'-hydroxy-4'- methoxybenzyl)-chroman-4-one (1), together with six known analogs, were isolated from the rhizomes of Polygonatum sibiricum. Their structures were elucidated on the basis of extensive spectroscopic analysis. All compounds were tested for their estrogenic activity using the MCF-7 estrogenresponsive human breast cancer cell lines. At a dose of 0.1 μmol/L, compounds 1-7 exhibited significant proliferative effects on MCF-7 cells compared with E2...
July 4, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28668911/recognizing-the-ordinary-as-extraordinary-insight-into-the-way-we-work-to-improve-patient-safety-outcomes
#7
Elizabeth A Henneman
The Institute of Medicine (now National Academy of Medicine) reports "To Err is Human" and "Crossing the Chasm" made explicit 3 previously unappreciated realities: (1) Medical errors are common and result in serious, preventable adverse events; (2) The majority of medical errors are the result of system versus human failures; and (3) It would be impossible for any system to prevent all errors. With these realities, the role of the nurse in the "near miss" process and as the final safety net for the patient is of paramount importance...
July 2017: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/28655179/to-err-is-perfectly-human-behavioural-and-neural-correlates-of-error-processing-and-perfectionism
#8
Antonia Barke, Stefan Bode, Peter Dechent, Carsten Schmidt-Samoa, Christina Van Heer, Jutta Stahl
The attitude towards one's own imperfection strongly varies between individuals. Here, we investigated variations in error-related activity depending on two sub-traits of perfectionism, Personal Standard Perfectionism (PSP) and Evaluative Concern Perfectionism (ECP) in a large scale functional magnetic resonance imaging study (N = 75) using a digit-flanker task. Participants with higher PSP scores showed both more post-error slowing and more neural activity in the medial-frontal gyrus including anterior cingulate cortex after errors...
June 26, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28643457/eradication-of-hepatitis-c-virus-profoundly-prolongs-survival-in-hepatocellular-carcinoma-patients-receiving-transarterial-chemoembolization
#9
Wei Teng, Yi-Chung Hsieh, Kar-Wai Lui, Wei-Ting Chen, Chien-Fu Hung, Chien-Hao Huang, Yi-Cheng Chen, Wen-Juei Jeng, Chen-Chun Lin, Chun-Yen Lin, Shi-Ming Lin, I-Shyan Sheen
Adjuvant pegylated interferon plus ribavirin treatment (PegIFN/RBV) reduces recurrence and prolongs survival in early stage hepatocellular carcinoma (HCC) patients with chronic hepatitis C (CHC) infection receiving resection or ablation. However, the impact of antiviral therapy in intermediate and advanced stage of CHC-HCC patients is uncertain. This study aimed to investigate the impact PegIFN/RBV treatment on recurrence free interval and survival in HCC patients receiving transarterial chemoembolization (TACE) METHODS: From 2010 to 2013, 274 CHC patients from a 1073-patients based cohort composed of freshly diagnosed HCC and receiving TACE treatment the Chang Gung Memorial Hospital, Linkou Medical Center were recruited...
June 22, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28633732/to-err-is-human-can-american-medicine-learn-from-past-mistakes
#10
Jeffrey B Ritterman
The history of medicine includes many errors. Some persisted for decades and caused great harm. Several are highlighted in this article, including the mythical thymic diseases: thymic asthma and status thymicolymphaticus. Some medical mistakes, such as the diet-heart hypothesis of Ancel Keys, continue to cause harm. To avoid future errors and their associated harm, I suggest a cultural shift encouraging professional humility and greater questioning of medical dogma. Medical education focused on teaching students this history may help with this cultural shift...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28630197/pharmacodynamics-of-cefepime-combined-with-tazobactam-against-clinically-relevant-enterobactereaceae-in-a-neutropenic-mouse-thigh-model
#11
Maria J Melchers, Anita C van Mil, Claudia Lagarde, Jan den Hartigh, Johan W Mouton
The lack of new antibiotics prompted the investigation of the combination of two existing agents cefepime, a broad-spectrum cephalosporin and tazobactam to broaden its efficacy against extended-spectrum beta-lactamase producing Enterobacteriaceae. We determined the pharmacokinetic and pharmacodynamic properties of the combination in a murine neutropenic thigh model in order to establishing its exposure- response relationships (ERR). The PK of cefepime was determined for five doses; that of tazobactam was determined in earlier studies (Melchers et al Antimicrob...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28595581/a-strategy-to-estimate-the-rate-of-recruitment-of-inflammatory-cells-during-bovine-intramammary-infection-under-field-management
#12
J Detilleux
BACKGROUND: In most infectious diseases, among which bovine mastitis, promptness of the recruitment of inflammatory cells (mainly neutrophils) in inflamed tissues has been shown to be of prime importance in the resolution of the infection. Although this information should aid in designing efficient control strategies, it has never been quantified in field studies. METHODS: Here, a system of ordinary differential equations is proposed that describes the dynamic process of the inflammatory response to mammary pathogens...
June 8, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28570333/response-to-medical-errors
#13
Adam Webb
Despite improvements in patient safety science over the past 15 years since the Institute of Medicine's publication of To Err Is Human, medical errors remain a major contributor to adverse patient outcomes and mortality. In the aftermath of a harmful medical error, providers often face dilemmas regarding how to best report and disclose errors.
June 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28558759/the-danish-regions-pediatric-triage-model-has-a-limited-ability-to-detect-both-critically-ill-children-as-well-as-children-to-be-sent-home-without-treatment-a-study-of-diagnostic-accuracy
#14
Lotte Høeg Hansen, Christian Backer Mogensen, Lena Wittenhoff, Helene Skjøt-Arkil
BACKGROUND: The Danish Regions Pediatric Triage model (DRPT) was introduced in 2012 and subsequent implemented in most Danish acute pediatric departments. The aim was to evaluate the validity of DRPT as a screening tool to detect both the most serious acute conditions and the non-serious conditions in the acute referred patients in a pediatric department. METHOD: The study was prospective observational, with follow-up on all children with acute referral to pediatric department from October to December 2015...
May 30, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28542008/radiation-risk-of-cardiovascular-diseases-in-the-cohort-of-russian-emergency-workers-of-the-chernobyl-accident
#15
V V Kashcheev, S Yu Chekin, S V Karpenko, M A Maksioutov, A N Menyaylo, K A Tumanov, E V Kochergina, P V Kashcheeva, A I Gorsky, N V Shchukina, S S Lovachev, O K Vlasov, V K Ivanov
This paper continues a series of publications that analyze the impact of radiation on incidence of circulatory system diseases in the cohort of Russian recovery operation workers (liquidators) and presents the results of the analysis of cardiovascular disease (CVD) incidence. The studied cohort consists of 53,772 liquidators who arrived in the Chernobyl accident zone within the first year after the accident (26 April 1986 to 26 April 1987). The individual doses varied from 0.0001 Gy to 1.42 Gy, and the mean external whole body dose in the cohort was 0...
July 2017: Health Physics
https://www.readbyqxmd.com/read/28537704/selective-etching-of-silicon-in-preference-to-germanium-and-si0-5ge0-5
#16
Christopher F Ahles, Jong Youn Choi, Steven Wolf, Andrew C Kummel
The selective etching characteristics of silicon, germanium, and Si0.5Ge0.5 subjected to a downstream H2/CF4/Ar plasma have been studied using a pair of in situ quartz crystal microbalances (QCMs) and X-ray photoelectron spectroscopy (XPS). At 50 °C and 760 mTorr, Si can be etched in preference to Ge and Si0.5Ge0.5, with an essentially infinite Si/Ge etch-rate ratio (ERR), whereas for Si/Si0.5Ge0.5, the ERR is infinite at 22 °C and 760 mTorr. XPS data showed that the selectivity is due to the differential suppression of etching by a ∼2 ML thick CxHyFz layer formed by the H2/CF4/Ar plasma on Si, Ge, and Si0...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28525844/the-discovery-of-novel-potent-err-alpha-inverse-agonists-for-the-treatment-of-triple-negative-breast-cancer
#17
Yongli Du, Lianhua Song, Liudi Zhang, Hao Ling, Yanhui Zhang, Haifei Chen, Huijie Qi, Xiaojin Shi, Qunyi Li
The estrogen-related receptor α (ERRα) is an orphan receptor and a novel target for solid tumor therapy, conceivably through effects on the regulation of tumor cell energy metabolism associated with energy stress within solid tumor micro environments. Here we describe the discovery of novel potent inverse agonists of ERRα. In vitro, compound 11 potently inhibits ERRα's transcriptional activity by preventing endogenous PGC-1α and ERRα binding and suppresses the proliferation of different human cancer cell lines and the migration of breast cancer cells (MDA-MB-231)...
April 22, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28512482/effect-of-field-of-view-on-detection-of-external-root-resorption-in-cone-beam-computed-tomography
#18
(no author information available yet)
INTRODUCTION: Conventional methods for diagnosis of external root resorption (ERR) are based on clinical findings and x-ray observations which are not appropriate for early diagnosis. The present study assessed the effect of different sizes and field of views (FOVs) in the diagnosis of simulated external root resorption by cone-beam computed tomography (CBCT). METHODS AND MATERIALS: In this diagnostic in vitro trial, 100 human extracted mandibular central incisors were collected and marked in 3 apical, middle and coronal areas...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28510140/nuclear-receptors-ecr-usp-e75-dhr3-and-err-regulate-transcription-of-ecdysone-cascade-genes
#19
M Yu Mazina, E V Kocheryzhkina, J V Nikolenko, A N Krasnov, S G Georgieva, N E Vorobyeva
We found that an increase in the expression level of E75, DHR3, and ERR increases the degree of activation of dhr3 and hr4 genes in Drosophila S2 cells. We also detected a repressing effect of these nuclear receptors on the basal transcription level of these genes. This is the first study to show the ability of nuclear receptors E75, DHR3, and ERR to function as activators or repressors depending on external conditions. We also confirmed the existence of the interaction of all studied nuclear receptors with the promoters of dhr3 and hr4 genes of the ecdysone cascade in vivo...
March 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28504525/introspection-of-subjective-feelings-is-sensitive-and-specific
#20
Laurence Questienne, Jean-Philippe van Dijck, Wim Gevers
Conversely to behaviorist ideas, recent studies suggest that introspection can be accurate and reliable. However, an unresolved question is whether people are able to report specific aspects of their phenomenal experience, or whether they report more general nonspecific experiences. To address this question, we investigated the sensitivity and validity of our introspection for different types of conflict. Taking advantage of the congruency sequence effect, we dissociated response conflict while keeping visual conflict unchanged in a Stroop and in a priming task...
May 15, 2017: Journal of Experimental Psychology. Human Perception and Performance
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