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https://www.readbyqxmd.com/read/28651369/reduced-thalamus-volume-may-reflect-nicotine-severity-in-young-male-smokers
#1
Dahua Yu, Kai Yuan, Jiadong Cheng, Yanyan Guan, Yangding Li, Yanzhi Bi, Jinquan Zhai, Lin Luo, Bo Liu, Ting Xue, Xiaoqi Lu
Introduction: Nicotine acts as an agonist at presynaptic nicotinic acetylcholine receptors (nAChRs) and to facilitate synaptic release of several neurotransmitters including dopamine and glutamate. The thalamus has the highest density of nAChRs in the brain, which may make this area be more vulnerable to the addictive effects of nicotine. However, the volume of thalamus abnormalities and the association with smoking behaviors in young smokers remains unknown. Methods: Thirty-six young male smokers and 36 age-, gender- and education-matched nonsmokers participated in current study...
June 23, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28651337/preliminary-validation-of-a-method-combining-cultivation-and-cloning-based-approaches-to-monitor-airborne-bacteria
#2
Jenny Schäfer, Sarah Weiß, Udo Jäckel
It is already known that occupational exposure to bioaerosols or organic dust could be harmful for occupants, but mostly the correlation to occurring bacteria is missing. Especially, cultivation of bacteria from bioaerosols is important to get an insight on occurring and possibly infectious bacteria. These measures are highly time consuming and cost intensive. Therefore, to monitor bacterial diversity in bioaerosol samples and to avoid isolation procedures, an approach was applied using a combination of cultivation and cloning-based approach...
June 23, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28651231/evaluation-of-in-vitro-anticancer-activity-of-1-8-cineole-containing-n-hexane-extract-of-callistemon-citrinus-curtis-skeels-plant-and-its-apoptotic-potential
#3
Sowndarya Sampath, Vidhya Veeramani, Gopal Shankar Krishnakumar, Udhayakumar Sivalingam, Suguna Lakshmi Madurai, Rose Chellan
Plants are the source of a variety of secondary metabolites, which are often used in the anticancer activity. Discovering new anticancer drug from herbal source is more important in both biological and pharmacological activities. Hence, the objective of this study is to identify the anticancer agent in Callistemon citrinus (Curtis) Skeels (CC) for the treatment of cancer. Very recently we have reported an increased antioxidant activity in the ethanolic and methanolic extracts (EE and ME) of CC but significantly reduced activity (rather increased cytotoxicity), in the n-hexane extract (HE)...
June 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28651226/insight-in-body-dysmorphic-disorder-bdd-relative-to-obsessive-compulsive-disorder-ocd-and-psychotic-disorders-revisiting-this-issue-in-light-of-dsm-5
#4
Wei Lin Toh, David J Castle, Rachel L Mountjoy, Ben Buchanan, John Farhall, Susan L Rossell
INTRODUCTION: In DSM-5, body dysmorphic disorder (BDD) was reclassified under the obsessive-compulsive and related disorders (OCRDs), but little is known about the nature of BDD beliefs. This study aimed to compare level of insight in BDD and consider related implications for DSM-5 classification. METHOD: Participants were 27 BDD, 19 obsessive-compulsive disorder (OCD), and 20 psychosis (SZ) participants as well as 42 non-clinical controls (NC), who completed the Brown Assessment of Beliefs Scale (BABS) and Peters Delusions Inventory (PDI)...
June 8, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28651214/dna-methylation-and-the-preservation-of-cell-identity
#5
REVIEW
Ozren Bogdanović, Ryan Lister
DNA methylation is a major epigenetic modification of vertebrate genomes that is mostly associated with transcriptional repression. During embryogenesis, DNA methylation together with other epigenetic factors plays an essential role in selecting and maintaining cell identity. Recent technological advances are now allowing for the exploration of this mark at unprecedented resolution. This has resulted in a wealth of studies describing the developmental roles of DNA methylation in various vertebrate model systems...
June 23, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28651209/removal-of-pharmaceuticals-and-personal-care-products-by-ammonia-oxidizing-bacteria-acclimated-in-a-membrane-bioreactor-contributions-of-cometabolism-and-endogenous-respiration
#6
Junwon Park, Naoyuki Yamashita, Guangxue Wu, Hiroaki Tanaka
We carried out batch experiments using biomass from a membrane bioreactor (MBR) to study the influence of ammonia oxidizing bacteria (AOB) on the removal of 45 pharmaceuticals and personal care products (PPCPs). Kinetic parameters such as biodegradation constants and adsorption coefficients with and without AOB inhibition were estimated. No significant differences in adsorption tendency were found, but the biodegradability of most compounds was enhanced when ammonia was completely oxidized, indicating that AOB present in MBR played a critical role in eliminating the PPCPs...
June 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28651171/the-relevance-of-inter-and-intrastrain-differences-in-mice-and-rats-and-their-implications-for-models-of-seizures-and-epilepsy
#7
REVIEW
Wolfgang Löscher, Russell J Ferland, Thomas N Ferraro
It is becoming increasingly clear that the genetic background of mice and rats, even in inbred strains, can have a profound influence on measures of seizure susceptibility and epilepsy. These differences can be capitalized upon through genetic mapping studies to reveal genes important for seizures and epilepsy. However, strain background and particularly mixed genetic backgrounds of transgenic animals need careful consideration in both the selection of strains and in the interpretation of results and conclusions...
June 23, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28651162/antibacterial-activity-corrosion-resistance-and-wear-behavior-of-spark-plasma-sintered-ta-5cu-alloy-for-biomedical-applications
#8
Jing Cui, Liang Zhao, Weiwei Zhu, Bi Wang, Cancan Zhao, Liming Fang, Fuzeng Ren
Tantalum has been widely used in orthopedic and dental implants. However, the major barrier to the extended use of such medical devices is the possibility of bacterial adhesion to the implant surface which will cause implant-associated infections. To solve this problem, bulk Ta-5Cu alloy has been fabricated by a combination of mechanical alloying and spark plasma sintering. The effect of the addition of Cu on the hardness, antibacterial activity, cytocompatibility, corrosion resistance and wear performance was systematically investigated...
June 21, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28651108/synchronous-characterization-of-carbohydrates-and-ginsenosides-yields-deeper-insights-into-the-processing-chemistry-of-ginseng
#9
Shan-Shan Zhou, Jun Xu, Ming Kong, Ka-Man Yip, Jin-Di Xu, Hong Shen, Zhong-Zhen Zhao, Song-Lin Li, Hu-Biao Chen
Carbohydrates and ginsenosides in ginseng are biologically interrelated. Their synchronous analysis is therefore essential in chemical research on ginseng to characterize its "holistic" quality. Here we investigated the processing chemistry of red ginseng (RG), a ginseng product processed by water-steaming, for which both carbohydrates and ginsenosides were qualitatively and quantitatively determined through multiple analytical techniques. Results revealed that the steam-processing not only qualitatively and quantitatively altered the ginsenosides but also affected the polymeric carbohydrates via changing their physiochemical parameters, i...
June 19, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28651083/characterization-of-organic-precursors-in-dbp-formation-and-aoc-in-urban-surface-water-and-their-fate-during-managed-aquifer-recharge
#10
Hyun-Chul Kim, Won Mo Lee, Seunghak Lee, Jaewon Choi, Sung Kyu Maeng
In this study, the organic components were identified that are mainly responsible for the formation of disinfection byproducts (DBPs) and for the biostability of urban surface water. The compositional distribution of dissolved organic matter (DOM) was strongly associated with the potential for both DBP formation and bacterial growth. Further evaluation was carried out (1) to compare the potential for DBP formation upon chlorination of treated water, (2) to determine the biostability that might result from minimizing assimilable organic carbon (AOC), and (3) to use laboratory-scale soil-column experiments to compare the effects of removal of trace organic chemicals (TOrCs) between managed aquifer recharge (MAR) hybrid systems (such as bank filtration followed by artificial recharge and recovery: ARR), and ozonation followed by ARR...
June 14, 2017: Water Research
https://www.readbyqxmd.com/read/28651070/assessment-of-temporal-predictive-models-for-health-care-using-a-formal-method
#11
Ward van Breda, Mark Hoogendoorn, A E Eiben, Matthias Berking
Recent developments in the field of sensor devices provide new possibilities to measure a variety of health related aspects in a precise and fine-grained manner. Subsequently, more empirical data will be generated than ever before. While this greatly improves the opportunities for creating accurate predictive models, other types of models besides the more traditional machine learning approaches can provide insights into temporal relationships in the data. Models that express temporal relationships between states in a mathematical manner are examples of such models...
June 17, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28651020/the-nervous-system-of-the-adult-ascidian-ciona-intestinalis-type-a-ciona-robusta-insights-from-transgenic-animal-models
#12
Tomohiro Osugi, Yasunori Sasakura, Honoo Satake
The nervous system of ascidians is an excellent model system to provide insights into the evolutionary process of the chordate nervous system due to their phylogenetic positions as the sister group of vertebrates. However, the entire nervous system of adult ascidians has yet to be functionally and anatomically investigated. In this study, we have revealed the whole dorsal and siphon nervous system of the transgenic adult ascidian of Ciona intestinalis Type A (Ciona robusta) in which a Kaede reporter gene is expressed in a pan-neuronal fashion...
2017: PloS One
https://www.readbyqxmd.com/read/28651019/in-silico-genomic-insights-into-aspects-of-food-safety-and-defense-mechanisms-of-a-potentially-probiotic-lactobacillus-pentosus-mp-10-isolated-from-brines-of-naturally-fermented-alore%C3%A3-a-green-table-olives
#13
Hikmate Abriouel, Beatriz Pérez Montoro, María Del Carmen Casado Muñoz, Charles W Knapp, Antonio Gálvez, Nabil Benomar
Lactobacillus pentosus MP-10, isolated from brines of naturally fermented Aloreña green table olives, exhibited high probiotic potential. The genome sequence of L. pentosus MP-10 is currently considered the largest genome among lactobacilli, highlighting the microorganism's ecological flexibility and adaptability. Here, we analyzed the complete genome sequence for the presence of acquired antibiotic resistance and virulence determinants to understand their defense mechanisms and explore its putative safety in food...
2017: PloS One
https://www.readbyqxmd.com/read/28651014/a-decade-of-haart-in-latin-america-long-term-outcomes-among-the-first-wave-of-hiv-patients-to-receive-combination-therapy
#14
Marcelo J Wolff, Mark J Giganti, Claudia P Cortes, Pedro Cahn, Beatriz Grinsztejn, Jean W Pape, Denis Padgett, Juan Sierra-Madero, Eduardo Gotuzzo, Stephany N Duda, Catherine C McGowan, Bryan E Shepherd
BACKGROUND: In Latin America, the first wave of HIV-infected patients initiated highly active antiretroviral therapy (HAART) 10 or more years ago. Characterizing their treatment experience and corresponding outcomes across a decade of HAART may yield insights relevant to the ongoing care of such patients and those initiating HAART more recently in similar clinical settings. METHODS: This retrospective study included adults initiating HAART before 2004 at 8 sites in Argentina, Brazil, Chile, Haiti, Honduras, and Mexico...
2017: PloS One
https://www.readbyqxmd.com/read/28651010/macrophages-but-not-neutrophils-are-critical-for-proliferation-of-burkholderia-cenocepacia-and-ensuing-host-damaging-inflammation
#15
Jennifer Mesureur, Joana R Feliciano, Nelly Wagner, Margarida C Gomes, Lili Zhang, Monica Blanco-Gonzalez, Michiel van der Vaart, David O'Callaghan, Annemarie H Meijer, Annette C Vergunst
Bacteria of the Burkholderia cepacia complex (Bcc) can cause devastating pulmonary infections in cystic fibrosis (CF) patients, yet the precise mechanisms underlying inflammation, recurrent exacerbations and transition from chronic stages to acute infection and septicemia are not known. Bcc bacteria are generally believed to have a predominant extracellular biofilm life style in infected CF lungs, similar to Pseudomonas aeruginosa, but this has been challenged by clinical observations which show Bcc bacteria predominantly in alveolar macrophages...
June 26, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28650998/functional-annotation-of-alzheimer-s-disease-associated-loci-revealed-by-gwass
#16
Zengpeng Han, Han Huang, Yue Gao, Qingyang Huang
Genome-wide association studies (GWASs) discovered a number of SNPs and genes associated with Alzheimer's disease (AD). However, how these SNPs and genes influence the liability to AD is not fully understood. We deployed computational approaches to explore the function and action mechanisms of AD -related SNPs and genes identified by GWASs, including the effects of 195 GWAS lead SNPs and 338 proxy SNPs on miRNAs binding and protein phosphorylation, their RegulomeDB and 3DSNP scores, and gene ontology, pathway enrichment and protein-protein interaction network of 126 AD-associated genes...
2017: PloS One
https://www.readbyqxmd.com/read/28650977/leishmania-donovani-resides-in-modified-early-endosomes-by-upregulating-rab5a-expression-via-the-downregulation-of-mir-494
#17
Jitender Kumar Verma, Ruchir Rastogi, Amitabha Mukhopadhyay
Several intracellular pathogens arrest the phagosome maturation in the host cells to avoid transport to lysosomes. In contrast, the Leishmania containing parasitophorous vacuole (PV) is shown to recruit lysosomal markers and thus Leishmania is postulated to be residing in the phagolysosomes in macrophages. Here, we report that Leishmania donovani specifically upregulates the expression of Rab5a by degrading c-Jun via their metalloprotease gp63 to downregulate the expression of miR-494 in THP-1 differentiated human macrophages...
June 26, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28650973/interferon-signaling-in-peromyscus-leucopus-confers-a-potent-and-specific-restriction-to-vector-borne-flaviviruses
#18
Adaeze O Izuogu, Kristin L McNally, Stephen E Harris, Brian H Youseff, John B Presloid, Christopher Burlak, Jason Munshi-South, Sonja M Best, R Travis Taylor
Tick-borne flaviviruses (TBFVs), including Powassan virus and tick-borne encephalitis virus cause encephalitis or hemorrhagic fevers in humans with case-fatality rates ranging from 1-30%. Despite severe disease in humans, TBFV infection of natural rodent hosts has little noticeable effect. Currently, the basis for resistance to disease is not known. We hypothesize that the coevolution of flaviviruses with their respective hosts has shaped the evolution of potent antiviral factors that suppress virus replication and protect the host from lethal infection...
2017: PloS One
https://www.readbyqxmd.com/read/28650848/ser-thr-protein-kinase-b2-nadph-oxidase-2-signaling-in-thromboinflammation
#19
Jing Li, Jaehyung Cho
PURPOSE OF REVIEW: Interactions between neutrophils and platelets contribute to the progression of thromboinflammatory disease. However, the regulatory mechanism governing these interactions is poorly understood. The present review focuses on the crucial role of Ser/Thr protein kinase B (AKT)2-NADPH oxidase 2 (NOX2) signaling in regulating neutrophil and platelet activation and their heterotypic interactions under thromboinflammatory conditions. RECENT FINDINGS: Growing evidence has shown that platelets, leukocytes, and blood coagulation need to be considered to treat thromboinflammatory disease in which inflammation and thrombosis occur concurrently...
June 24, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28650828/convex-formulation-for-kernel-pca-and-its-use-in-semisupervised-learning
#20
Carlos M Alaiz, Michael Fanuel, Johan A K Suykens
In this brief, kernel principal component analysis (KPCA) is reinterpreted as the solution to a convex optimization problem. Actually, there is a constrained convex problem for each principal component, so that the constraints guarantee that the principal component is indeed a solution, and not a mere saddle point. Although these insights do not imply any algorithmic improvement, they can be used to further understand the method, formulate possible extensions, and properly address them. As an example, a new convex optimization problem for semisupervised classification is proposed, which seems particularly well suited whenever the number of known labels is small...
June 23, 2017: IEEE Transactions on Neural Networks and Learning Systems
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