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https://www.readbyqxmd.com/read/28431351/role-of-membrane-fouling-substances-on-the-rejection-of-n-nitrosamines-by-reverse-osmosis
#1
Takahiro Fujioka, Hitoshi Kodamatani, Hidenobu Aizawa, Stephen Gray, Kenneth P Ishida, Long D Nghiem
The impact of fouling substances on the rejection of four N-nitrosamines by a reverse osmosis (RO) membrane was evaluated by characterizing individual organic fractions in a secondary wastewater effluent and deploying a novel high-performance liquid chromatography-photochemical reaction-chemiluminescence (HPLC-PR-CL) analytical technique. The HPLC-PR-CL analytical technique allowed for a systematic examination of the correlation between the fouling level and the permeation of N-nitrosamines in the secondary wastewater effluent and synthetic wastewaters through an RO membrane...
April 3, 2017: Water Research
https://www.readbyqxmd.com/read/28431345/insights-into-targeting-young-male-drivers-with-anti-speeding-advertising-an-application-of-the-step-approach-to-message-design-and-testing-satmdt
#2
I Lewis, K M White, B Ho, B Elliott, B Watson
In Australia, young drivers aged 17-25 years comprise 13% of the population yet account for 22% of all road deaths with young males over-represented in such trauma. Speeding represents a major contributing factor and advertising campaigns have long focused on promoting anti-speeding messages in the effort to reduce drivers' speeds. Positioned within a larger program of research aimed at developing, piloting, and evaluating a range of theoretically-informed anti-speeding messages, the current study reports results relating to the final phase of the research, the evaluation...
April 18, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28431270/clinicians-conflicting-emotional-responses-to-high-suicide-risk-patients-association-with-short-term-suicide-behaviors-a-prospective-pilot-study
#3
Zimri S Yaseen, Igor I Galynker, Lisa J Cohen, Jessica Briggs
BACKGROUND: Clinician's emotional responses to patients have been recognized as potentially relating to treatment outcome, however they have received little attention in the literature on suicide risk. We examine the relationship between a novel targeted measure of clinicians' emotional responses to high-risk psychiatric inpatients and their short-term post-discharge suicide behavior. METHODS: First-year psychiatry residents' emotional responses to their patients were assessed anonymously with the novel self-report 'Therapist Response Questionnaire-Suicide Form' (TRQ-SF)...
April 6, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28430833/on-the-need-for-quantitative-bias-analysis-in-the-peer-review-process
#4
Matthew P Fox, Timothy L Lash
Peer review is central to the process through which epidemiologists generate evidence to inform public health and medical interventions. Reviewers thereby act as critical gatekeepers to high-quality research. They are asked to carefully consider the validity of the proposed work or research findings by paying careful attention to the methodology and critiquing the importance of the insight gained. However, although many have noted problems with the peer-review system for both manuscripts and grant submissions, few solutions have been proposed to improve the process...
April 18, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28430784/non-invasive-quantification-of-collagen-turnover-in-renal-transplant-recipients
#5
Elisabeth G D Stribos, Signe Holm Nielsen, Susanne Brix, Morten Asser Karsdal, Marc A Seelen, Harry van Goor, Stephan J L Bakker, Peter Olinga, Henricus A M Mutsaers, Federica Genovese
Kidney allograft failure due to chronic injury/rejection remains the main cause of graft loss in renal transplant recipients (RTR). Here, we investigated whether specific biomarkers of extracellular matrix (ECM) turnover are associated with allograft function and chronic kidney disease (CKD) stage in RTR. Seventy-eight patients who attended the University Medical Center Groningen for a routine check-up after kidney transplantation were enrolled in the study. Plasma and/or 24h-urine samples were collected and specific matrix-metalloproteinase-generated neo-epitope fragments of collagens were measured by enzyme-linked immunosorbent assay...
2017: PloS One
https://www.readbyqxmd.com/read/28429535/a-cross-circulated-bicephalic-model-of-head-transplantation
#6
Peng-Wei Li, Xin Zhao, Yun-Long Zhao, Bing-Jian Wang, Yang Song, Zi-Long Shen, Hong-Jun Jiang, Hai Jin, Sergio Canavero, Xiao-Ping Ren
AIMS: A successful cephalosomatic anastomosis ("head transplant") requires, among others, the ability to control long-term immune rejection and avoidance of ischemic events during the head transference phase. We developed a bicephalic model of head transplantation to study these aspects. METHODS AND RESULTS: The thoracic aorta and superior vena cava of a donor rat were anastomosed with the carotid artery and extracorporeal veins of a recipient rat by vascular grafts...
April 21, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28429390/microporous-polyamide-membranes-for-molecular-sieving-of-nitrogen-from-volatile-organic-compounds
#7
Haoli Zhou, Fei Tao, Quan Liu, Chunxin Zong, Wenchao Yang, Xingzhong Cao, Wanqin Jin, Nanping Xu
Microporous polymer membranes continue to receive tremendous attention for energy-efficient gas separation processes owing to their high separation performances. A new network microporous polyamide membrane with good molecular-sieving performance for the separation of N2 from a volatile organic compound (VOC) mixture is described. Triple-substituted triptycene was used as the main monomer to form a fisherman's net-shaped polymer, which readily forms a composite membrane by solution casting. This membrane exhibited outstanding separation performance and good stability for the molecular-sieving separation of N2 over VOCs such as cyclohexane...
April 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28429139/rates-of-parasitism-but-not-allocation-of-egg-resources-vary-among-and-within-hosts-of-a-generalist-avian-brood-parasite
#8
Loren Merrill, Scott J Chiavacci, Ryan T Paitz, Thomas J Benson
Brown-headed cowbirds (Molothrus ater) deposit their eggs into the nests of other birds, which then raise the cowbird chick. Female cowbirds thus have limited options for impacting their offspring's development via maternal effects compared to most other passerines. Cowbirds can impact their offspring's phenotype by choosing among potential host nests, and by adjusting egg resources based on host characteristics. To examine whether cowbirds exhibit either or both of these strategies, we investigated rates of cowbird parasitism and egg investment (egg size, yolk-to-albumen ratio, and yolk testosterone and androstenedione) among and within host species in a shrubland bird community...
April 20, 2017: Oecologia
https://www.readbyqxmd.com/read/28428891/dietary-inclusion-effects-of-phytochemicals-as-growth-promoters-in-animal-production
#9
REVIEW
Nidia Vanessa Valenzuela-Grijalva, Araceli Pinelli-Saavedra, Adriana Muhlia-Almazan, David Domínguez-Díaz, Humberto González-Ríos
Growth promoters have been widely used as a strategy to improve productivity, and great benefits have been observed throughout the meat production chain. However, the prohibition of growth promoters in several countries, as well as consumer rejection, has led industry and the academy to search for alternatives. For decades, the inclusion of phytochemicals in animal feed has been proposed as a replacement for traditional growth promoters. However, there are many concerns about the application of phytochemicals and their impact on the various links in the meat production chain (productive performance, carcass and meat quality)...
2017: Journal of Animal Science and Technology
https://www.readbyqxmd.com/read/28428556/treatment-of-donor-corneal-tissue-with-immunomodulatory-cytokines-a-novel-strategy-to-promote-graft-survival-in-high-risk-corneal-transplantation
#10
Maryam Tahvildari, Parisa Emami-Naeini, Masahiro Omoto, Alireza Mashaghi, Sunil K Chauhan, Reza Dana
Antigen-presenting cells (APCs) play an important role in transplant rejection and tolerance. In high-risk corneal transplantation, where the graft bed is inflamed and vascularized, immature APCs in the donor corneal stroma quickly mature and migrate to lymphoid tissues to sensitize host T cells. In this study, using a mouse model of corneal transplantation, we investigated whether enrichment of tolerogenic APCs (tolAPCs) in donor corneas can enhance graft survival in corneal allograft recipients with inflamed graft beds...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28426987/a-review-on-nitrous-oxide-n2o-emissions-during-biological-nutrient-removal-from-municipal-wastewater-and-sludge-reject-water
#11
REVIEW
Theoni Maria Massara, Simos Malamis, Albert Guisasola, Juan Antonio Baeza, Constantinos Noutsopoulos, Evina Katsou
Nitrous oxide (N2O) is an important pollutant which is emitted during the biological nutrient removal (BNR) processes of wastewater treatment. Since it has a greenhouse effect which is 265 times higher than carbon dioxide, even relatively small amounts can result in a significant carbon footprint. Biological nitrogen (N) removal conventionally occurs with nitrification/denitrification, yet also through advanced processes such as nitritation/denitritation and completely autotrophic N-removal. The microbial pathways leading to the N2O emission include hydroxylamine oxidation and nitrifier denitrification, both activated by ammonia oxidizing bacteria, and heterotrophic denitrification...
April 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28426902/hepatic-steatosis-after-pediatric-liver-transplant
#12
Emily R Perito, Tabitha Vase, Rageshree Ramachandran, Andrew Phelps, Kuang-Yu Jen, Robert H Lustig, Vickie A Feldstein, Philip Rosenthal
RATIONALE: Hepatic steatosis develops after liver transplant in 30% of adults, and non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease in non-transplanted children. However, post-transplant steatosis has been minimally studied in pediatric liver transplant recipients. We explored the prevalence, persistence, and association with chronic liver damage of hepatic steatosis in these children. RESULTS: In this single-center study of pediatric patients transplanted 1988-2015 (n=318), 31% of those with any post-transplant biopsy (n=271) had ≥1 biopsy with steatosis...
April 20, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28426684/long-term-results-after-transplantation-of-pediatric-liver-grafts-from-donation-after-circulatory-death-donors
#13
Rianne van Rijn, Pieter E R Hoogland, Frank Lehner, Ernest L W van Heurn, Robert J Porte
BACKGROUND: Liver grafts from donation after circulatory death (DCD) donors are increasingly accepted as an extension of the organ pool for transplantation. There is little data on the outcome of liver transplantation with DCD grafts from a pediatric donor. The objective of this study was to assess the outcome of liver transplantation with pediatric DCD grafts and to compare this with the outcome after transplantation of livers from pediatric donation after brain death (DBD) donors. METHOD: All transplantations performed with a liver from a pediatric donor (≤16 years) in the Netherlands between 2002 and 2015 were included...
2017: PloS One
https://www.readbyqxmd.com/read/28426313/substance-use-criteria-to-restrict-medicaid-coverage-of-hepatitis-c-treatment-cost-versus-ethics
#14
Joshua M Liao, Michael A Fischer
Medicaid programs provide health insurance coverage for many patients with hepatitis C, a public health problem for which effective but very expensive treatments are now available. Facing constrained budgets, most states adopted prior authorization criteria for sofosbuvir, the first of these agents. Using fee-for-service utilization data from 42 Medicaid programs in 2014, we found that strict behavioral criteria-those that limited coverage on the basis of drug or alcohol use and included specific abstinence or treatment requirements-were associated with significantly less spending on sofosbuvir...
April 20, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28426152/donor-specific-alloreactive-t-cells-can-be-quantified-from-whole-blood-and-may-predict-cellular-rejection-after-renal-transplantation
#15
Michaela Fischer, Sarah Leyking, Marco Schäfer, Julia Elsäßer, Martin Janssen, Janine Mihm, Kai van Bentum, Danilo Fliser, Martina Sester, Urban Sester
Preformed cellular alloreactivity can exist prior to transplantation and may contribute to rejection. Here, we used a rapid flow-cytometric whole-blood assay to characterize the extent of alloreactive T cells among 1491 stimulatory reactions from 61 renal transplant candidates and 75 controls. The role of preformed donor-specific alloreactive T cells in cellular rejection was prospectively analyzed in 21 renal transplant recipients. Alloreactive CD8(+) T cells were more frequent than respective CD4(+) T cells, and these levels were stable over time...
April 20, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28425766/update-in-the-treatment-of-non-influenza-respiratory-virus-infection-in-solid-organ-transplant-recipients
#16
Shellee A Grim, Gail E Reid, Nina M Clark
Despite the improved outcomes in solid organ transplantation with regard to prevention of rejection and increased patient and graft survival, infection remains a common cause of morbidity and mortality. Respiratory viruses are a frequent and potentially serious cause of infection after solid organ transplantation. Furthermore, clinical manifestations of respiratory virus infection (RVI) may be more severe and unusual in solid organ transplant recipients (SOTRs) compared with the non-immunocompromised population...
April 20, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28425200/high-dose-calcineurin-inhibitor-free-everolimus-as-a-maintenance-regimen-for-heart-transplantation-may-be-a-risk-factor-for%C3%A2-pneumocystis-pneumonia
#17
Yu-Ning Hu, Nan-Yao Lee, Jun-Neng Roan, Chi-Hsin Hsu, Chwan-Yao Luo
BACKGROUND: Everolimus reduces the incidence of cardiac-allograft vasculopathy (CAV) and is less renally toxic than are calcineurin inhibitors (CNIs). We evaluated the safety of CNI-free everolimus for post-heart transplant (HTx) patients. METHODS: We retrospectively reviewed the records of 36 consecutive patients who had undergone an HTx between January 2006 and December 2013 in National Cheng Kung University Hospital. All patients initially had been treated with the standard tacrolimus regimen...
April 20, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28424956/removal-of-selected-pesticides-from-groundwater-by-membrane-distillation
#18
Julia Plattner, Christian Kazner, Gayathri Naidu, Thomas Wintgens, Saravanamuthu Vigneswaran
The removal of five selected pesticide compounds in a brackish model groundwater solution was examined using a bench scale direct contact membrane distillation (DCMD) system. It was found that the rejection rate of the pesticides in DCMD is mainly influenced by its properties. Compounds with low hydrophobic characteristics and low vapour pressure showed a high rejection rate (70-99%), whereas compounds with a high vapour pressure or high hydrophobicity (LogD) showed a reduced rejection (30-50%) at a water recovery of 75%...
April 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28423197/diabetic-kidney-transplant-recipients-impaired-infection-control-and-increased-alloreactivity
#19
Thomas Schachtner, Maik Stein, Petra Reinke
BACKGROUND: Posttransplantation diabetes mellitus (PTDM) has been associated with inferior patient and allograft outcomes. However, previous studies didn't identify differences in infection control and alloreactivity. METHODS: We studied 449 kidney transplant recipients (KTRs) between 2005 and 2013. 50 (11.1%) KTRs were diagnosed with PTDM and 60 (13.4%) KTRs with pre-existing diabetes. Samples were collected pretransplantation, at +1, +2, +3 months posttransplantation...
April 19, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28422926/targeting-high-calcineurin-inhibitor-levels-after-acute-rejection-with-less-tremor-a-new-strategy
#20
Tarek Alhamad, Karthikeyan Venkatachalam, Reem Daloul, Daniel Brennan, Andrew Malone
No abstract text is available yet for this article.
April 18, 2017: Transplantation
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