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https://www.readbyqxmd.com/read/28110498/neutral-losses-of-sodium-benzoate-and-benzoic-acid-in-the-fragmentation-of-the-m%C3%A2-%C3%A2-na-ions-of-methoxyfenozide-and-tebufenozide-via-intramolecular-rearrangement-in-electrospray-ionization-tandem-mass-spectrometry
#1
Yunfeng Chai, Guanwei Gao, Shanshan Shen, Xin Liu, Chengyin Lu
RATIONALE: Electrospray ionization (ESI) tandem mass spectrometry can be applied to determine structural information about organic compounds. The [M + Na](+) ion is one of the major precursor ions in ESI mass spectrometry, but its fragmentation mechanism study is still insufficient. This study reveals the interesting fragmentation reactions of the [M + Na](+) ions of methoxyfenozide and tebufenozide. METHODS: The fragmentations of the [M + Na](+) , [M + Li](+) , and [M + H](+) ions of methoxyfenozide and tebufenozide were studied using a hybrid quadrupole-orbitrap mass spectrometer and an ion trap mass spectrometer...
February 15, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28110488/examining-mortality-and-rejection-in-combined-heart-lung-transplantations
#2
Sagar Kadakia, Sharven Taghavi, Senthil Jayarajan, Vishnu Ambur, Grayson Wheatley, Larry Kaiser, Yoshiya Toyoda
Background There is a paucity of data on outcomes related to combined heart-lung transplantations (HLTs). Our objective was to identify variables associated with mortality and rejection in HLT. Methods The United Network for Organ Sharing database was reviewed for HLT performed between 1993 and 2008. Long-term survivors (survival > 5 years) were compared with short-term survivors (survival < 5 years). Factors associated with rejection were examined. Risk-adjusted multivariable Cox's proportional hazards regression analysis was performed to examine variables associated with mortality and rejection...
January 22, 2017: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/28110467/an-overview-of-autosomal-dominant-tumour-syndromes-with-prominent-features-in-the-oral-and-maxillofacial-region
#3
REVIEW
Robert A Kennedy, Selvam Thavaraj, Salvador Diaz-Cano
Several autosomal dominant inherited tumour syndromes demonstrate prominent features in the oral and maxillofacial region. Although multiple organ systems are frequently involved, the target organs more frequently affected are the skin (nevoid basal cell carcinoma syndrome, Brooke-Spiegler syndrome, Birt-Hogg-Dube syndrome and Muir-Torre syndrome), gastrointestinal tract (Peutz-Jegher syndrome and Gardner syndrome) or endocrine system (multiple endocrine neoplasia type 2b and hyperparathyroidism-jaw tumour syndrome)...
January 21, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28110447/hemispheric-lateralization-of-resting-state-functional-connectivity-of-the-ventral-striatum-an-exploratory-study
#4
Sheng Zhang, Sien Hu, Herta H Chao, Chiang-Shan R Li
Resting-state functional connectivity (rsFC) is widely used to examine cerebral functional organization. The ventral striatum (VS) is critical to motivated behavior, with extant studies suggesting functional hemispheric asymmetry. The current work investigated differences in rsFC between the left (L) and right (R) VS and explored gender differences in the extent of functional lateralization. In 106 adults, we computed a laterality index (fcLI) to query whether a target region shows greater or less connectivity to the L vs R VS...
January 21, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28110405/cyanotoxins-producing-organisms-occurrence-toxicity-mechanism-of-action-and-human-health-toxicological-risk-evaluation
#5
REVIEW
Franca M Buratti, Maura Manganelli, Susanna Vichi, Mara Stefanelli, Simona Scardala, Emanuela Testai, Enzo Funari
Cyanobacteria were present on the earth 3.5 billion years ago; since then they have colonized almost all terrestrial and aquatic ecosystems. They produce a high number of bioactive molecules, among which some are cyanotoxins. Cyanobacterial growth at high densities, forming blooms, is increasing in extension and frequency, following anthropogenic activities and climate changes, giving rise to some concern for human health and animal life exposed to cyanotoxins. Numerous cases of lethal poisonings have been associated with cyanotoxins ingestion in wild animal and livestock...
January 21, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28110397/enhancement-of-acetate-productivity-in-a-thermophilic-55%C3%A2-%C3%A2-c-hollow-fiber-membrane-biofilm-reactor-with-mixed-culture-syngas-h2-co2-fermentation
#6
Yun-Qi Wang, Shi-Jin Yu, Fang Zhang, Xiu-Yang Xia, Raymond J Zeng
Conversion of organic wastes to syngas is an attractive way to utilize wastes. The produced syngas can be further used to produce a variety of chemicals. In this study, a hollow-fiber membrane biofilm reactor with mix cultures was operated at 55 °C to convert syngas (H2/CO2) into acetate. A high concentration of acetate (42.4 g/L) was reached in batch experiment while a maximum acetate production rate of 10.5 g/L/day was achieved in the continuous-flow mode at hydraulic retention time (HRT) of 1 day. Acetate was the main product in both batch and continuous-flow experiments...
January 21, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28110396/application-of-%C3%AE-glucuronidase-gusa-as-an-effective-reporter-for-extremely-acidophilic-acidithiobacillus-ferrooxidans
#7
Huiyan Wang, Liangyan Fang, Qing Wen, Jianqun Lin, Xiangmei Liu
Acidithiobacillus ferrooxidans is a model organism for investigating metal sulfide bioleaching. The regulatory mechanism of gene expression by metabolizing various substrates is critical for understanding its role in bioleaching processes. However, no reporter has been successfully employed to study gene expression in A. ferrooxidans to date. In this study, a sensitive and robust reporter system based on β-glucuronidase (GusA) was described for feasible application in A. ferrooxidans. A set of vectors, which contained the transcriptional and translational fusions of gusA, were constructed and employed to analyze promoter activity and efficiency of translation initiation in A...
January 21, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28110370/multidetector-ct-findings-of-histopathologically-proven-peritoneal-tuberculous-cold-abscesses
#8
Jae-Joon Chung, Jeong Min Choi, Eun-Suk Cho, Joo Hee Kim, Jeong-Sik Yu
PURPOSE: To evaluate the characteristic multidetector CT findings of peritoneal tuberculous (TB) cold abscesses. PATIENTS AND METHODS: The morphological characteristics of 48 peritoneal TB cold abscesses in 29 patients (male:female = 13:16; age range 16-75 years) were retrospectively evaluated. TB infection was histologically proven by acid fast bacilli (AFB) smear or culture, TB-polymerase chain reaction (PCR), or histopathological specimen diagnosis. RESULTS: Seventeen abscesses (35...
January 21, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28110361/the-impact-of-routine-whole-spine-mri-screening-in-the-evaluation-of-spinal-degenerative-diseases
#9
Rishi Mugesh Kanna, Younis Kamal, Anupama Mahesh, Prakash Venugopal, Ajoy Prasad Shetty, S Rajasekaran
PURPOSE: Magnetic resonance imaging (MRI) of the spine is a sensitive investigation, which not only provides detailed images of the spinal column but also adjacent spinal regions and para-vertebral organ systems. Such incidental findings (IF) can be asymptomatic but significant. The efficacy of whole spine T2 sagittal screening in providing additional information has been demonstrated in several spinal diseases but its routine use in patients with spinal degenerative diseases has not been studied...
January 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28110358/pollution-assessment-of-the-biob%C3%A3-o-river-chile-prioritization-of-substances-of-concern-under-an-ecotoxicological-approach
#10
Álvaro Alonso, Ricardo Figueroa, Pilar Castro-Díez
The water demand for human activities is rapidly increasing in developing countries. Under these circumstances, preserving aquatic ecosystems should be a priority which requires the development of quality criteria. In this study we perform a preliminary prioritization of the risky substances based on reported ecotoxicological studies and guidelines for the Biobío watershed (Central Chile). Our specific aims are (1) reviewing the scientific information on the aquatic pollution of this watershed, (2) determining the presence and concentration of potential toxic substances in water, sediment and effluents, (3) searching for quality criteria developed by other countries for the selected substances and (4) prioritizing the most risky substances by means of deterministic ecotoxicological risk assessment...
January 21, 2017: Environmental Management
https://www.readbyqxmd.com/read/28110349/organochlorine-pesticides-in-gonad-brain-and-blood-of-mice-in-two-agricultural-areas-of-sinaloa
#11
Ernestina Perez-Gonzalez, Ulises-Giovanni Osuna-Martinez, Maria-Nancy Herrera-Moreno, Guadalupe-Durga Rodriguez-Meza, Hector-A Gonzalez-Ocampo, Marcos Bucio-Pacheco
The adverse effect of pesticides on non-target wildlife and human health is a primary concern in the world, but in Mexico, we do not know which wildlife species are at the greatest risk. The aim of this study was to determine organochlorine pesticides in mice of two agricultural fields in Sinaloa, Culiacan and Guasave. Procedures of extraction, analysis, and quantification were followed according to the modified EPA 8081b method. In three mouse tissues (gonad, brain, and blood), γBHC and decachlorobiphenyl with a frequency higher than 50% and endosulfan sulfate with 43% were observed...
January 21, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28110320/acute-on-chronic-liver-failure-recent-update
#12
Alam Azeem, Chun Suen Ka, Ma Daqing
Acute on chronic liver failure (ACLF) was first described in 1995 as a clinical syndrome distinct to classic acute decompensation. Characterized by complications of decompensation, ACLF occurs on a background of chronic liver dysfunction and is associated with high rates of organ failure and significant short-term mortality estimated between 45% and 90%. Despite the clinical relevance of the condition, it still remains largely undefined with continued disagreement regarding its precise etiological factors, clinical course, prognostic criteria and management pathways...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110319/perioperative-remote-acute-lung-injury-recent-update
#13
Jin Zhaosheng, Suen Ka Chun, Ma Daqing
Perioperative acute lung injury (ALI) is a syndrome characterised by hypoxia and chest radiograph changes. It is a serious post-operative complication, associated with considerable mortality and morbidity. In addition to mechanical ventilation, remote organ insult could also trigger systemic responses which induce ALI. Currently, there are limited treatment options available beyond conservative respiratory support. However, increasing understanding of the pathophysiology of ALI and the biochemical pathways involved will aid the development of novel treatments and help to improve patient outcome as well as to reduce cost to the health service...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110298/idh1-mutation-in-diffuse-gliomas-in-persons-age-55-years-and-over
#14
Chase Robinson, B K Kleinschmidt-DeMasters
Diffuse astrocytoma (DA), anaplastic astrocytoma (AA), and glioblastoma (GBM) are defined by the World Health Organization (WHO) based on IDH-mutational status. The vast majority of IDH-mutated gliomas (90% of which involve a mutation in IDH1 R132H, which can be assessed by IDH1 immunohistochemistry [IHC]) occur in persons younger than 55 years of age. This raises the question as to the prevalence of IDH-mutant tumors in older persons and whether the gliomas in older patients should be routinely tested. Since January 1, 2014, we have employed a standard screening panel for all gliomas regardless of patient age...
January 21, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28110269/genetic-predictors-of-long-term-graft-function-in-kidney-and-pancreas-transplant-patients
#15
Claire E Duff, Matthew J Simmonds
Kidney and pancreas transplantation have helped transform the lives of people with end-stage renal failure and individuals with type 1 diabetes who have poor glycaemic control/severe secondary complications, respectively. Despite an improvement in immunosuppressive regimes, operative techniques and decreased initial rejection rates, there has been little improvement in long-term graft survival rates over the past decade. Whilst limited progress has been made in establishing clinical markers of graft function, several genetic markers of long-term graft function have been identified...
January 20, 2017: Briefings in Functional Genomics
https://www.readbyqxmd.com/read/28110257/acidification-with-nitric-acid-improves-chemical-characteristics-and-reduces-phytotoxicity-of-alkaline-chars
#16
Fernando Fornes, Rosa Maria Belda
Charred organic matter is recently receiving attention for its potential use as soilless growth medium. However, depending on its origin and on the manufacturing technology, it can result toxic for plants. This fact implies that a detoxifying treatment ought to be devised in order to reclaim char in this way. We have studied three materials which combine these factors: two pyrolyzed biochars, one from forest waste (BCH-FW) and another from olive mill waste (BCH-OMW), and one hydrothermally carbonized hydrochar from forest waste (HYD-FW)...
January 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28110246/fe-fe2o3-promoted-electrochemical-mineralization-of-atrazine-via-a-triazinon-ring-opening-mechanism
#17
Xing Ding, Shengyao Wang, Wanqiu Shen, Yi Mu, Li Wang, Hao Chen, Lizhi Zhang
In this study, an electrochemical/electro-Fenton oxidation (EC/EF) system was designed to degrade atrazine, by utilizing boron-doped diamond (BDD) and Fe@Fe2O3 core-shell nanowires loaded active carbon fiber (Fe@Fe2O3/ACF) as the anode and the cathode, respectively. This EC/EF system exhibited much higher degradation rate, decholorination and mineralization efficiency of atrazine than the electrochemical (EC) and electrochemical/traditional electro-Fenton (EC/TEF) oxidation counterpart systems without Fe@Fe2O3 core-shell nanowires...
January 16, 2017: Water Research
https://www.readbyqxmd.com/read/28110230/identification-of-the-autotrophic-denitrifying-community-in-nitrate-removal-reactors-by-dna-stable-isotope-probing
#18
Wei Xing, Jinlong Li, Yuan Cong, Wei Gao, Zhongjun Jia, Desheng Li
Autotrophic denitrification has attracted increasing attention for wastewater with insufficient organic carbon sources. Nevertheless, in situ identification of autotrophic denitrifying communities in reactors remains challenging. Here, a process combining micro-electrolysis and autotrophic denitrification with high nitrate removal efficiency was presented. Two batch reactors were fed organic-free nitrate influent, with H(13)CO3(-) and H(12)CO3(-) as inorganic carbon sources. DNA-based stable-isotope probing (DNA-SIP) was used to obtain molecular evidence for autotrophic denitrifying communities...
January 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28110229/aerobic-granular-sludge-inoculated-microbial-fuel-cells-for-enhanced-epoxy-reactive-diluent-wastewater-treatment
#19
Kai Cheng, Jingping Hu, Huijie Hou, Bingchuan Liu, Qin Chen, Keliang Pan, Wenhong Pu, Jiakuan Yang, Xu Wu, Changzhu Yang
Microbial consortiums aggregated on the anode surface of microbial fuel cells (MFCs) are critical factors for electricity generation as well as biodegradation efficiencies of organic compounds. Here in this study, aerobic granular sludge (AGS) was assembled on the surface of the MFC anode to form an AGS-MFC system with superior performance on epoxy reactive diluent (ERD) wastewater treatment. AGS-MFCs successfully shortened the startup time from 13d to 7d compared to the ones inoculated with domestic wastewater...
January 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28110200/soil-soil-solution-distribution-coefficient-of-soil-organic-matter-is-a-key-factor-for-that-of-radioiodide-in-surface-and-subsurface-soils
#20
Yusuke Unno, Hirofumi Tsukada, Akira Takeda, Yuichi Takaku, Shun'ichi Hisamatsu
We investigated the vertical distribution of the soil-soil-solution distribution coefficients (Kd) of (125)I, (137)Cs, and (85)Sr in organic-rich surface soil and organic-poor subsurface soil of a pasture and an urban forest near a spent-nuclear-fuel reprocessing plant in Rokkasho, Japan. Kd of (137)Cs was highly correlated with water-extractable K(+). Kd of (85)Sr was highly correlated with water-extractable Ca(2+) and SOC. Kd of (125)I(-) was low in organic-rich surface soil, high slightly below the surface, and lowest in the deepest soil...
January 19, 2017: Journal of Environmental Radioactivity
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