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https://www.readbyqxmd.com/read/29156538/combined-effects-of-simulated-microgravity-and-radiation-exposure-on-osteoclast-cell-fusion
#1
Srinivasan Shanmugarajan, Ye Zhang, Maria Moreno-Villanueva, Ryan Clanton, Larry H Rohde, Govindarajan T Ramesh, Jean D Sibonga, Honglu Wu
The loss of bone mass and alteration in bone physiology during space flight are one of the major health risks for astronauts. Although the lack of weight bearing in microgravity is considered a risk factor for bone loss and possible osteoporosis, organisms living in space are also exposed to cosmic radiation and other environmental stress factors. As such, it is still unclear as to whether and by how much radiation exposure contributes to bone loss during space travel, and whether the effects of microgravity and radiation exposure are additive or synergistic...
November 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29156432/the-effects-of-human-drugs-in-corbicula-fluminea-assessment-of-neurotoxicity-inflammation-gametogenic-activity-and-energy-status
#2
G V Aguirre-Martínez, C André, F Gagné, L M Martín-Díaz
The constant release of pharmaceuticals products to aquatic environment even at low concentrations (ng L(-1) to µg L(-1)) could lead to unknown chronic effects to non-target organisms. The aim of this study was to evaluate neurotoxic responses, inflammation, gametogenic activity and energy status on the fresh water clam C. fluminea after exposure to different concentrations of caffeine (CAF), ibuprofen (IBU), carbamazepine (CBZ), novobiocin (NOV) and tamoxifen (TMX) for 21 days under laboratory conditions...
November 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29156331/may-humic-acids-or-mineral-fertilisation-mitigate-arsenic-mobility-and-availability-to-carrot-plants-daucus-carota-l-in-a-volcanic-soil-polluted-by-as-from-irrigation-water
#3
Antonio G Caporale, Paola Adamo, Shah M G G Azam, Maria A Rao, Massimo Pigna
Carrot (Daucus carota L.) is a widely consumed root vegetable, whose growth and safety might be threatened by growing-medium arsenic (As) contamination. By this work, we evaluated the effects of humic acids from Leonardite and NPK mineral fertilisation on As mobility and availability to carrot plants grown for 60 days in a volcanic soil irrigated with As-contaminated water - representing the most common scenario occurring in As-affected Italian areas. As expected, the irrigation with As-contaminated water caused a serious toxic effect on plant growth and photosynthetic rate; the highest rate of As also inhibited soil enzymatic activity...
November 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/29156284/temporal-characterization-and-statistical-analysis-of-flowback-and-produced-waters-and-their-potential-for-reuse
#4
Karl Oetjen, Kevin E Chan, Kristoffer Gulmark, Jan H Christensen, Jens Blotevogel, Thomas Borch, John R Spear, Tzahi Y Cath, Christopher P Higgins
Hydraulic fracturing (HF) has allowed for the utilization of previously unattainable shale oil and gas (O&G) resources. After HF is complete, the waters used to increase the facies' permeability return uphole as wastewaters. When these waters return to the surface, they are characterized by complex organic and inorganic chemistry, and can pose a health risk if not handled correctly. Therefore, these waters must be treated or disposed of properly. However, the variability of these waters' chemical composition over time is poorly understood and likely limits the applicability of their reuse...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156231/acute-organoaxial-gastric-volvulus-a-massive-problem-with-a-twist-case-report
#5
Fadi Al Daoud, Gul Sachwani Daswani, Vinu Perinjelil, Tina Nigam
INTRODUCTION: Gastric volvulus (GV) is a rare and life threatening condition if not treated promptly or wrongly diagnosed. The main complication of gastric volvulus is foregut obstruction. The extreme rotation can cut off blood supply to the stomach and even distal organs, which can lead to ischemia and necrosis of the affected area. PRESENTATION OF CASE: We report a case of a 41yo female that complained of severe abdominal pain, nausea and vomiting for approximately 3days after eating a large meal...
November 13, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29156081/cervical-hpv-prevalence-and-genotype-distribution-in-immunosuppressed-danish-women
#6
Mette T Roensbo, Jan Blaakaer, Karin Skov, Anne Hammer
INTRODUCTION: Women receiving immunosuppressive treatment due to organ transplantation are at increased risk of Human papilloma virus (HPV)-related diseases, including cervical neoplasia. This pilot study aimed to describe the cervical HPV prevalence and genotype distribution in immunosuppressed Danish women. MATERIAL AND METHODS: We included women who underwent renal- (RTR) or bone marrow transplantation (BMTR) in 2009-2012 or 2014 at Aarhus University Hospital, Denmark...
November 20, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29156018/risk-factors-of-myasthenic-crisis-after-thymectomy-for-thymoma-patients-with-myasthenia-gravis
#7
Liang Xue, Lin Wang, Jihong Dong, Yunfeng Yuan, Hong Fan, Yi Zhang, Qun Wang, Jianyong Ding
OBJECTIVES: Total thymectomy should be performed on thymoma patients with myasthenia gravis. The aim of the present study was to investigate the risk factors of postoperative myasthenic crisis (POMC) occurrence in these patients. METHODS: The clinical records of 127 thymoma patients with myasthenia gravis (68 men, 59 women; median age, 50 years) who underwent total thymectomy at our institution from 2005 to 2014 were retrospectively reviewed. The following factors were analysed in relation to POMC: gender, age, duration of symptoms, bulbar symptoms, smoking history, history of myasthenic crisis, comorbidities, perioperative pyridostigmine and prednisolone therapy, spirometric and blood gas parameters, Osserman stage, operation approach, major complications, World Health Organization (WHO) histologic classification, Masaoka stage and use of immunoglobulins or plasmapheresis...
October 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29155673/strengthening-global-surveillance-for-antimicrobial-drug-resistant-neisseria-gonorrhoeae-through-the-enhanced-gonococcal-antimicrobial-surveillance-program
#8
Emily J Weston, Teodora Wi, John Papp
Monitoring trends in antimicrobial drug-resistant Neisseria gonorrhoeae is a critical public health and global health security activity because the number of antimicrobial drugs available to treat gonorrhea effectively is rapidly diminishing. Current global surveillance methods for antimicrobial drug-resistant N. gonorrhoeae have many limitations, especially in countries with the greatest burden of disease. The Enhanced Gonococcal Antimicrobial Surveillance Program is a collaboration between the World Health Organization and the Centers for Disease Control and Prevention...
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29155668/responding-to-communicable-diseases-in-internationally-mobile-populations-at-points-of-entry-and-along-porous-borders-nigeria-benin-and-togo
#9
Rebecca D Merrill, Kimberly Rogers, Sarah Ward, Olubumni Ojo, Clement Glele Kakaī, Tamekloe Tsidi Agbeko, Hassan Garba, Amanda MacGurn, Marydale Oppert, Idrissa Kone, Olutola Bamsa, Dana Schneider, Clive Brown
Recent multinational disease outbreaks demonstrate the risk of disease spreading globally before public health systems can respond to an event. To ensure global health security, countries need robust multisectoral systems to rapidly detect and respond to domestic or imported communicable diseases. The US Centers for Disease Control and Prevention International Border Team works with the governments of Nigeria, Togo, and Benin, along with Pro-Health International and the Abidjan-Lagos Corridor Organization, to build sustainable International Health Regulations capacities at points of entry (POEs) and along border regions...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29155339/body-mass-index-predicts-risk-of-complications-in-lumbar-spine-surgery-based-on-surgical-invasiveness
#10
Olivia J Bono, Gregory W Poorman, Norah Foster, Cyrus M Jalai, Samantha R Horn, Jonathan Oren, Alexandra Soroceanu, Subaraman Ramachandran, Taylor E Purvis, Deeptee Jain, Shaleen Vira, Bassel G Diebo, Breton Line, Daniel M Sciubba, Themistocles S Protopsaltis, Aaron J Buckland, Thomas J Errico, Virginie Lafage, Shay Bess, Peter G Passias
BACKGROUND CONTEXT: Obesity as a comorbidity in spine pathology may increase the risk of complications following surgical treatment. The BMI threshold at which obesity becomes clinically relevant, and the exact nature of that effect, remains poorly understood. PURPOSE: Identify the body mass index (BMI) that independently predicts risk of postoperative complications following lumbar spine surgery. STUDY DESIGN/SETTING: Retrospective review of the National Surgery Quality Improvement Program (NSQIP) years 2011-2013...
November 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29155020/the-uk-dcd-risk-score-a-new-proposal-to-define-futility-in-donation-after-circulatory-death-liver-transplantation
#11
Andrea Schlegel, Marit Kalisvaart, Irene Scalera, Richard W Laing, Hynek Mergental, Darius F Mirza, Thamara Perera, John Isaac, Philipp Dutkowski, Paolo Muiesan
OBJECTIVES: To design a new score on risk assessment in liver transplantation donated after circulatory death (DCD) based on donor and recipient parameters. BACKGROUND: Primary-non-function (PNF) and ischemic cholangiopathy (IC) are the most feared complications following DCD liver transplantation. METHODS: Using the United Kingdom (UK) national DCD database, a risk analysis was performed in adult recipients of DCD liver grafts in UK between 2000 and 2015 (n=1153)...
November 15, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29154398/community-data-collection-with-children-of-mothers-living-with-hiv-boundaries-of-the-researcher-role
#12
Rebecca Hill LeCroix, Nada M Goodrum, Schell Hufstetler, Lisa P Armistead
The TRACK-II program is a multi-site, community-based randomized controlled trial evaluating an intervention to assist mothers living with HIV (MLH) in disclosing their HIV status to their young children. Many participants-both mothers and children-reported significant depression and/or suicidal ideation, a phenomenon that presented ethical challenges. This article focuses on participants at one site (Atlanta). Through the vignette of "Jordan," we describe ethical challenges that may arise when faced with the responsibility of maximizing participants' safety while maintaining the boundaries of the researcher role...
November 20, 2017: American Journal of Community Psychology
https://www.readbyqxmd.com/read/29154302/don-t-abandon-hope-all-ye-who-enter-here-the-protective-role-of-formal-mentoring-and-learning-processes-on-burnout-in-correctional-officers
#13
M L Farnese, B Barbieri, B Bellò, P T Bartone
BACKGROUND: Within a Job Demands-Resources Model framework, formal mentoring can be conceived as a job resource expressing the organization's support for new members, which may prevent their being at risk for burnout. OBJECTIVE: This research aims at understanding the protective role of formal mentoring on burnout, through the effect of increasing learning personal resources. Specifically, we hypothesized that formal mentoring enhances newcomers' learning about job and social domains related to the new work context, thus leading to lower burnout...
2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/29154248/the-late-results-of-4000-hz-frequency-bone-conduction-after-tympanoplasty
#14
Joanna Janiak-Kiszka, Wojciech Kaźmierczak
INTRODUCTION: Surgical treatment of conductive hearing loss runs the risk of damage to the inner ear in the mechanism of acoustic trauma. AIM: The aim of this study was to evaluate the function of the organ of Corti, expressed as bone conduction threshold at the frequency of 4000 Hz for selected operations: mastoidectomy and canal-wall-down procedure. MATERIAL AND METHODS: The material was collected from patients with chronic otitis media in the Department of Otolaryngology and ENT Oncology, Collegium Medicum of Nicolaus Copernicus University in Bydgoszcz in 2004-2009...
October 30, 2017: Otolaryngologia Polska
https://www.readbyqxmd.com/read/29154139/perfluorinated-compounds-in-surface-waters-of-shanghai-china-source-analysis-and-risk-assessment
#15
Rui Sun, Minghong Wu, Liang Tang, Jiajun Li, Zhaoqiu Qian, Tao Han, Gang Xu
17 perfluorinated compounds (PFCs) were systematically investigated in the surface water from principal watersheds of Shanghai, China. 10 PFCs were above the detection limit (0.08-0.28ng/L) in 39 surface water samples. The perfluorooctanoic acid (PFOA) and perfluorobutanesulfonate (PFBS) were the two dominant compounds with a median concentration 50.67ng/L and 29.84ng/L, respectively. Concentrations of perfluorooctanesulfonate (PFOS) were generally less than PFBS, which might result from the global phase-out of PFOS production and the use of PFBS as a substitute for PFOS-based products...
November 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29154115/ecological-risk-assessment-of-microcystin-lr-in-the-upstream-section-of-the-haihe-river-based-on-a-species-sensitivity-distribution-model
#16
Zhiguang Niu, Lei Du, Jiafu Li, Ying Zhang, Zhiwei Lv
The eutrophication of surface water has been the main problem of water quality management in recent decades, and the ecological risk of microcystin-LR (MC-LR), which is the by-product of eutrophication, has drawn more attention worldwide. The aims of our study were to determine the predicted no effect concentration (PNEC) of MC-LR and to assess the ecological risk of MC-LR in the upstream section of the Haihe River. HC5 (hazardous concentration for 5% of biological species) and PNEC were obtained from a species sensitivity distribution (SSD) model, which was constructed with the acute toxicity data of MC-LR on aquatic organisms...
November 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/29153534/configuration-affects-parallel-stent-grafting-results
#17
Adam Tanious, Mathew Wooster, Paul A Armstrong, Bruce Zwiebel, Shane Grundy, Martin R Back, Murray L Shames
OBJECTIVE: A number of adjunctive "off-the-shelf" procedures have been described to treat complex aortic diseases. Our goal was to evaluate parallel stent graft configurations and to determine an optimal formula for these procedures. METHODS: This is a retrospective review of all patients at a single medical center treated with parallel stent grafts from January 2010 to September 2015. Outcomes were evaluated on the basis of parallel graft orientation, type, and main body device...
November 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29153466/focal-boost-to-residual-gross-tumor-volume-in-brachytherapy-for-cervical-cancer-a-feasibility-study
#18
Niluja Thiruthaneeswaran, Nicki Groom, Gerry Lowe, Linda Bryant, Peter J Hoskin
PURPOSE: Image-guided plan optimization with MRI and CT for interstitial and intracavitary brachytherapy is an established technique in treating cervical cancer. The purpose of this study was to assess the feasibility of boosting the dose to the residual gross tumor volume (GTV-Tres) to 140% of the high-risk clinical target volume (HR-CTV) prescription. METHODS AND MATERIALS: Brachytherapy plans from 50 consecutive patients were analyzed in this study. All received external beam radiotherapy followed by brachytherapy (6 Gy × 4 fraction or 7 Gy × 4 fraction to HR-CTV)...
November 15, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29153462/health-related-quality-of-life-and-toxicity-after-single-fraction-19%C3%A2-gy-high-dose-rate-prostate-brachytherapy-phase-ii-trial
#19
Alfonso Gomez-Iturriaga, Francisco Casquero, Jose Ignacio Pijoan, Pablo Minguez, Jose Maria Espinosa, Ana Irasarri, Andrea Bueso, Jon Cacicedo, David Buchser, Pedro Bilbao
PURPOSE: To evaluate the safety, tolerance and impact on health-related-quality-of-life (HRQoL) of the high-dose-rate brachytherapy of 19 Gy (BRT-HDR-19 Gy) single fraction in prostate cancer. METHODS: From January 2014 to July 2016, 43 patients with low/intermediate risk were treated with BRT-HDR-19 Gy. The patients were monitored prospectively for toxicity and HRQoL. RESULTS: The median age, initial PSA and the International Prostate Symptom Score (IPSS) were 71 years (55-78), 7...
November 15, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29152846/on-the-geud-biological-optimization-objective-for-organs-at-risk-in-photon-optimizer-of-eclipse-treatment-planning-system
#20
Antonella Fogliata, Stephen Thompson, Antonella Stravato, Stefano Tomatis, Marta Scorsetti, Luca Cozzi
Inverse planning optimization using biologically based objectives is becoming part of the intensity modulated optimization process. The performances and efficacy of the biologically based gEUD (generalized Equivalent Uniform Dose) objective implemented in the Photon Optimizer (PO) of Varian Eclipse treatment planning system have been here analyzed. gEUD is associated with the parameter a that accounts for the seriality of a structure, being higher for more serial organs. The PO was used to optimize volumetric modulated arc therapy (VMAT) plans on a virtual homogeneous cylindrical phantom presenting a target and an organ at risk (OAR)...
November 20, 2017: Journal of Applied Clinical Medical Physics
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