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https://www.readbyqxmd.com/read/28938783/phytochemicals-reduce-aflatoxin-induced-toxicity-in-chicken-embryos
#1
Hsin-Bai Yin, Chi-Hung Chen, Michael J Darre, Ann M Donoghue, Dan J Donoghue, Kumar Venkitanarayanan
Aflatoxins (AF) are toxic metabolites produced by molds, Aspergillus flavus and Aspergillus parasiticus, which frequently contaminate poultry feed ingredients. Ingestion of AF-contaminated feed by chickens leads to deleterious effects, including decreased bird performance and reduced egg production. Moreover, AF residues in fertilized eggs result in huge economic losses by decreasing embryo viability and hatchability. This study investigated the efficacy of 2 generally recognized as safe phytochemicals, namely carvacrol (CR) and trans-cinnamaldehyde (TC), in protecting chicken embryos from AF-induced toxicity...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938397/regulation-of-orbital-fibrosis-and-adipogenesis-by-pathogenic-th17-cells-in-graves-orbitopathy
#2
Sijie Fang, Yazhuo Huang, Sisi Zhong, Yangyang Li, Yidan Zhang, Yinwei Li, Jing Sun, Xingtong Liu, Yang Wang, Shuo Zhang, Tianle Xu, Xiaodong Sun, Ping Gu, Dan Li, Huifang Zhou, Bin Li, Xianqun Fan
Context: Th17 cells are correlated with many human autoimmune disorders including Graves' disease, and may play key roles in the pathogenesis of Graves' orbitopathy (GO). Objective: To study the phenotype of Th17 cells in patients with GO and healthy subjects, investigate the fibrosis and adipogenesis in orbital fibroblasts (OFs) modulated by IL-17A, and determine the interaction between Th17 cells and OFs. Design/Setting/Participants: Blood samples and orbital tissues from GO patients and healthy controls were collected...
August 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28937908/relationship-between-dental-procedures-and-shunt-infections-in-hydrocephalic-patients-a-narrative-review
#3
Chidambaram Ramasamy
Oral physicians frequently encounter medically compromised patients in their everyday practice and a sizable number of these patients are in urgent need of specialized care. One such medically specialized category is that of patients suffering from hydrocephalus. A large number of medical reports and citations in support of surgical care of the hydrocephalic disorder are available in literature. However, reports on dental studies offer contradictory statements on the relationship between hydrocephalic shunts and oral manoeuvres...
September 22, 2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28937582/design-of-the-exercise-mri-evaluation-of-hiv-pulmonary-arterial-hypertension-longitudinal-determinants-exhalted-trial
#4
Mohamad Amer Alaiti, Aditya Goud, Gautam Ramani, Sashwatee Bagchi, Sadeer Al-Kindi, Steven Sawicki, Christopher Longenecker, Trevor Jenkins, David Pauza, Myung Park, Grace McComsey, Orlando Simonetti, Brian Hoit, Sanjay Rajagopalan
BACKGROUND: Pulmonary arterial hypertension (PAH) is a potentially serious cause of dyspnea and exercise limitation in patients with HIV infection. In this trial, we propose using exercise MRI in conjunction with cardiopulmonary testing to delineate PAH from other causes of cardiovascular dysfunction, identify individuals with exercise-induced PAH who are at high risk of developing resting PAH, and provide longitudinal estimates of progression of PAH and right ventricular function. METHODS: In this prospective observational study, HIV patients with dyspnea and exercise limitation in the absence of identifiable causes and those who meet the inclusion criteria will be enrolled based on resting pulmonary artery pressure (≤ or >40 mmHg) on a screening echocardiogram and exercise limitation on the Modified Medical Research Council dyspnea scale...
September 20, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28937425/a-case-of-lymphomatoid-papulosis-type-e-with-an-unusual-exacerbated-clinical-course
#5
Irena E Belousova, Liubov Kyrpychova, Alexey V Samtsov, Dmitry V Kazakov
Lymphomatoid papulosis (LyP) type E is a recently delineated variant characterized by the occurrence of large necrotic "eschar"-like lesions displaying microscopically angioinvasive and angiodestructive infiltrates composed of CD30 lymphocytes, frequently coexpressing CD8. In contrast to other LyP variants where patients develop multiple lesions, most patients with LyP type E present with few lesions (often 1 or 2 at a given time). In this article, we describe a 34-year-old man with LyP type E with an exacerbated clinical course characterized by the occurrence of almost a hundred of lesions...
September 12, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28937345/practical-implications-of-the-minimally-conscious-state-diagnosis-in-adults
#6
Karola V Kreitmair, Katherine E Kruse
This article addresses questions surrounding the minimally conscious state (MCS) from the perspective of adult clinical ethics. It describes the background of the MCS diagnosis, analyzes phenomenological ambiguities inherent in the nature of MCS, and raises epistemological concerns surrounding its diagnosis. It argues that in many cases, the burdens of prolonging treatment for people who have sustained certain severe brain injuries (SBI) outweigh the benefits, even if they are in or have the prospect of entering into MCS...
October 2017: Cambridge Quarterly of Healthcare Ethics: CQ: the International Journal of Healthcare Ethics Committees
https://www.readbyqxmd.com/read/28936894/recent-advances-in-protein-engineering-and-biotechnological-applications-of-glutathione-transferases
#7
Fereniki Perperopoulou, Fotini Pouliou, Nikolaos E Labrou
Glutathione transferases (GSTs, EC 2.5.1.18) are a widespread family of enzymes that play a central role in the detoxification, metabolism, and transport or sequestration of endogenous or xenobiotic compounds. During the last two decades, delineation of the important structural and catalytic features of GSTs has laid the groundwork for engineering GSTs, involving both rational and random approaches, aiming to create new variants with new or altered properties. These approaches have expanded the usefulness of native GSTs, not only for understanding the fundamentals of molecular detoxification mechanisms, but also for the development medical, analytical, environmental, and agricultural applications...
September 22, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28936780/ct-based-spect-attenuation-correction-and-assessment-of-infarct-size-results-from-a-cardiac-phantom-study
#8
Alexander Stephan Kroiss, Stephan Gerhard Nekolla, Georg Dobrozemsky, Thomas Grubinger, Barry Lynn Shulkin, Markus Schwaiger
RATIONALE: Myocardial perfusion SPECT is a commonly performed, well established, clinically useful procedure for the management of patients with coronary artery disease. However, the attenuation of photons from myocardium impacts the quantification of infarct sizes. CT-Attenuation Correction (AC) potentially resolves this problem. This contention was investigated by analyzing various parameters for infarct size delineation in a cardiac phantom model. METHODS: A thorax phantom with a left ventricle (LV), fillable defects, lungs, spine and liver was used...
September 21, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28936564/adaptation-to-inflammatory-rheumatic-disease-do-illness-representations-predict-patients-physical-functioning-over-time-a-complex-relationship
#9
Evangelos C Karademas, Georgia Dimitraki, Emmanouil Papastefanakis, Georgia Ktistaki, Argyro Repa, Irini Gergianaki, George Bertsias, Prodromos Sidiropoulos, Panagiotis Simos
Patients with an inflammatory rheumatic disease (IRD), are often faced with significant limitations in physical functioning. Illness representations are a key-factor of their illness-related experience. Our aim was to examine (a) whether illness representations can predict or only reflect IRD patients' physical functioning over time, and (b) the specific pathways through which representations and physical functioning at baseline are associated with representations and functioning at follow-up. Patients with rheumatoid arthritis (N = 54) or systemic lupus erythematosus (N = 58) participated in the two phases of the study, 1 year apart...
September 21, 2017: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28935960/combined-activation-of-map-kinase-pathway-and-%C3%AE-catenin-signaling-cause-deep-penetrating-nevi
#10
Iwei Yeh, Ursula E Lang, Emeline Durieux, Meng Kian Tee, Aparna Jorapur, A Hunter Shain, Veronique Haddad, Daniel Pissaloux, Xu Chen, Lorenzo Cerroni, Robert L Judson, Philip E LeBoit, Timothy H McCalmont, Boris C Bastian, Arnaud de la Fouchardière
Deep penetrating nevus (DPN) is characterized by enlarged, pigmented melanocytes that extend through the dermis. DPN can be difficult to distinguish from melanoma but rarely displays aggressive biological behavior. Here, we identify a combination of mutations of the β-catenin and mitogen-activated protein kinase pathways as characteristic of DPN. Mutations of the β-catenin pathway change the phenotype of a common nevus with BRAF mutation into that of DPN, with increased pigmentation, cell volume and nuclear cyclin D1 levels...
September 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28935332/surveillance-is-important-after-surgical-excision-of-giant-fibrovascular-polyps-of-the-esophagus
#11
Andrew J Cockbain, Ruth England, Simon P L Dexter, Abeezar I Sarela
Giant fibrovascular polyps of the esophagus are rare benign tumors arising from the cervical esophagus or hypopharynx. Radiologic and endoscopic investigation may struggle to identify a stalk or to delineate the tumor as luminal or submucosal in origin. Excision is advised, although the diagnosis, and therefore the optimal operative approach, may not be apparent until the time of operation. Individual case reports describe the technical success of surgical excision but rarely include follow-up. Our case series highlights the range of approaches for surgical excision and also the importance of long-term follow-up because of the risk of recurrence and potential for airway obstruction...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28934917/sparse-supervised-classification-methods-predict-and-characterize-nanomaterial-exposures-independent-markers-of-mwcnt-exposures
#12
Naveena Yanamala, Marlene S Orandle, Vamsi K Kodali, Lindsey Bishop, Patti C Zeidler-Erdely, Jenny R Roberts, Vincent Castranova, Aaron Erdely
Recent experimental evidence indicates significant pulmonary toxicity of multiwalled carbon nanotubes (MWCNTs), such as inflammation, interstitial fibrosis, granuloma formation, and carcinogenicity. Although numerous studies explored the adverse potential of various CNTs, their comparability is often limited. This is due to differences in administered dose, physicochemical characteristics, exposure methods, and end points monitored. Here, we addressed the problem through sparse classification method, a supervised machine learning approach that can reduce the noise contained in redundant variables for discriminating among MWCNT-exposed and MWCNT-unexposed groups...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28934379/autotrophic-biorefinery-dawn-of-the-gaseous-carbon-feedstock
#13
Sai Kishore Butti, S Venkata Mohan
CO2 is a resource yet to be effectively utilized in the autotrophic biotechnology, not only to mitigate and moderate the anthropogenic influence on our climate, but also to steer CO2 sequestration for sustainable development and carbon neutral status. The atmospheric CO2 concentration has seen an exponential increase with the turn of the new millennia causing numerous environmental issues and also in a way feedstock crisis. To progressively regulate the growing CO2 concentrations and to incorporate the integration strategies to our existing CO2 capturing tools, all the influencing factors need to be collectively considered...
October 2, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28934205/a-rab5-gtpase-module-is-important-for-autophagosome
#14
Fan Zhou, Shenshen Zou, Yong Chen, Zhanna Lipatova, Dan Sun, Xiaolong Zhu, Rui Li, Zulin Wu, Weiming You, Xiaoxia Cong, Yiting Zhou, Zhiping Xie, Valeriya Gyurkovska, Yutao Liu, Qunli Li, Wenjing Li, Jie Cheng, Yongheng Liang, Nava Segev
In the conserved autophagy pathway, the double-membrane autophagosome (AP) engulfs cellular components to be delivered for degradation in the lysosome. While only sealed AP can productively fuse with the lysosome, the molecular mechanism of AP closure is currently unknown. Rab GTPases, which regulate all intracellular trafficking pathways in eukaryotes, also regulate autophagy. Rabs function in GTPase modules together with their activators and downstream effectors. In yeast, an autophagy-specific Ypt1 GTPase module, together with a set of autophagy-related proteins (Atgs) and a phosphatidylinositol-3-phosphate (PI3P) kinase, regulates AP formation...
September 21, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28933920/multi-tissue-transcriptomics-delineates-the-diversity-of-airway-t-cell-functions-in-asthma
#15
Akul Singhania, Joshua C Wallington, Caroline G Smith, Daniel Horowitz, Karl J Staples, Peter H Howarth, Stephan D Gadola, Ratko Djukanović, Christopher H Woelk, Timothy Sc Hinks
Asthma arises from the complex interplay of inflammatory pathways in diverse cell types and tissues. We sought to undertake a comprehensive transcriptomic assessment of the epithelium and airway T cells that remain understudied in asthma, and investigate interactions between multiple cells and tissues. Epithelial brushings and flow-sorted CD3+ T cells from sputum and bronchoalveolar lavage were obtained from healthy subjects (N=19) and asthmatic patients (mild, moderate and severe asthma; N=46). Gene expression was assessed using Affymetrix HT HG-U133+ PM GeneChips and results were validated by real-time quantitative PCR...
September 21, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28933678/medicine-madness-and-murderers-the-context-of-english-forensic-psychiatric-hospitals
#16
Ruth McDonald, Vivek Furtado, Birgit Völlm
Purpose The purpose of this paper is to add to the understanding of context by shedding light on the relationship between context and organisational actors' abilities to resolve ongoing challenges. Design/methodology/approach The authors used qualitative data collection (interviews and focus groups with staff and site visits to English forensic psychiatry hospitals) and the analysis was informed by Lefebvre's writings on space. Findings Responses to ongoing challenges were both constrained and facilitated by the context, which was negotiated and co-produced by the actors involved...
August 21, 2017: Journal of Health Organization and Management
https://www.readbyqxmd.com/read/28933595/phosphoproteome-based-kinase-activity-profiling-reveals-the-critical-role-of-map2k2-and-plk1-in-neuronal-autophagy
#17
Lei-Lei Chen, Yong-Bo Wang, Ju-Xian Song, Wan-Kun Deng, Jia-Hong Lu, Li-Li Ma, Chuan-Bin Yang, Min Li, Yu Xue
Recent studies have demonstrated that dysregulation of macroautophagy/autophagy may play a central role in the pathogenesis of neurodegenerative disorders, and the induction of autophagy protects against the toxic insults of aggregate-prone proteins by enhancing their clearance. Thus, autophagy has become a promising therapeutic target against neurodegenerative diseases. In this study, quantitative phosphoproteomic profiling together with a computational analysis was performed to delineate the phosphorylation signalling networks regulated by 2 natural neuroprotective autophagy enhancers, corynoxine (Cory) and corynoxine B (Cory B)...
September 21, 2017: Autophagy
https://www.readbyqxmd.com/read/28933495/interfacial-structure-and-structural-forces-in-mixtures-of-ionic-liquid-with-a-polar-solvent
#18
Samuel W Coles, Alexander M Smith, Maxim V Fedorov, Florian Hausen, Susan Perkin
Many applications of ionic liquids involve their mixtures with neutral molecular solvents. The chemical physics of these high-concentration electrolytes, in particular at interfaces, still holds many challenges. In this contribution we begin to unravel the relationship between measurements of structural ('solvation') forces in mixtures of ionic liquid with polar solvent and the corresponding structure determined by molecular dynamics simulations of the same mixtures. In order to make the quantitative link between experiments with mica surfaces and simulations with fixed-charge surfaces, we present an experimental procedure for determining the effective surface charge on mica in ionic liquid...
September 21, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28933324/photobacterium-toruni-sp-nov-a-bacterium-isolated-from-diseased-farmed-fish
#19
Alejandro M Labella, David R Arahal, Teresa Lucena, Manuel Manchado, Dolores Castro, Juan J Borrego
Three bacterial strains were isolated from liver and spleen of diseased farmed redbanded seabream (Pagrus auriga) in south-west Spain. Their partial 16S rRNA gene sequences clustered within those of the genus Photobacterium, showing high similarity (98.6-99.3 %) to the type strains of Photobacterium iliopiscarium, P. piscicola, P. kishitanii, P. aquimaris and P. phosphoreum. Multilocus sequence analysis using six housekeeping genes (gapA, topA, mreB, ftsZ, gyrB and 16S rRNA) confirmed the new strains as forming an independent branch with a bootstrap value of 100, likely to represent a novel species...
September 21, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28933253/the-role-of-p53-microrna-200-moesin-axis-in-invasion-and-drug-resistance-of-breast-cancer-cells
#20
Farheen Alam, Fatima Mezhal, Hussain El Hasasna, Vidhya A Nair, S R Aravind, Maha Saber Ayad, Ahmed El-Serafi, Wael M Abdel-Rahman
This study aimed to analyze the expression of microRNAs in relation to p53 status in breast cancer cells and to delineate the role of Moesin in this axis. We used three isogenic breast carcinoma cell lines MCF7 (with wild-type p53), 1001 (MCF7 with mutated p53), and MCF7-E6 (MCF7 in which p53 function was disrupted). MicroRNA expression was analyzed using microarray analysis and confirmed by real-time polymerase chain reaction. The 1001 clone with mutant p53 showed 22 upregulated and 25 downregulated microRNAs...
September 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
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