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https://www.readbyqxmd.com/read/28645064/heroin-and-saccharin-demand-and-preference-in-rats
#1
Lindsay P Schwartz, Jung S Kim, Alan Silberberg, David N Kearns
BACKGROUND: Several recent studies have investigated the choice between heroin and a non-drug alternative reinforcer in rats. A common finding in these studies is that there are large individual differences in preference, with some rats preferring heroin and some preferring the non-drug alternative. The primary goal of the present study was to determine whether individual differences in how heroin or saccharin is valued, based on demand analysis, predicts choice. METHODS: Rats lever-pressed for heroin infusions and saccharin reinforcers on fixed-ratio schedules...
June 13, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28645056/serious-delinquency-and-later-schizophrenia-a-nationwide-register-based-follow-up-study-of-finnish-pretrial-15-to-19-year-old-offenders-sent-for-a-forensic-psychiatric-examination
#2
N Lindberg, J Miettunen, A Heiskala, R Kaltiala-Heino
BACKGROUND: Aggressive and disruptive behaviors often precede the onset of schizophrenia. In this register-based follow-up study with a case-control design, we wanted to investigate if serious delinquency was associated with future diagnoses of schizophrenia or schizoaffective disorder (here, broadly defined schizophrenia) among a nationwide consecutive sample of 15- to 19-year-old Finnish delinquents sent for a forensic psychiatric examination in 1989-2010. METHODS: The sample comprised 313 delinquents with no past or current psychotic disorder...
May 15, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28645051/enantioselective-disturbance-of-chiral-herbicide-dichlorprop-to-nitrogen-metabolism-of-arabidopsis-thaliana-regular-analysis-and-stable-isotope-attempt
#3
Zunwei Chen, Jia Wang, Siyu Chen, Yuezhong Wen
As the most essential element, nitrogen play a pivotal role in plant physiological process, which is susceptible to contaminants. However, the enantioselective effects of chiral herbicides on nitrogen metabolism have not been comprehensively understood. In this study, effects of chiral herbicide dichlorprop (DCPP) on the nitrogen behaviors in Arabidopsis thaliana were investigated. The results revealed that the uptakes of inorganic nitrogen (NO3(-) and NH4(+)) were preferentially impacted by herbicidal active (R)-DCPP, where the transportation of beneficial NO3(-) was inhibited but the toxic NH4(+) was accumulated...
June 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28645029/phytoavailability-of-cr-in-silene-vulgaris-the-role-of-soil-plant-genotype-and-bacterial-rhizobiome
#4
P García-Gonzalo, A E Pradas Del Real, M Pirredda, M J Gismera, M C Lobo, A Pérez-Sanz
Understanding the metal behavior at the soil-root interface is of utmost significance for a successful implementation of phytoremediation. In this study, we investigated the differences in chromium (Cr) uptake, chemical changes in soil solution and the shifts in rhizosphere bacterial communities of two genotypes of Silene vulgaris (SV21, SV38) with different tolerance to Cr. A greenhouse experiment was performed in two soils that differed on pH and organic matter (OM) content. An industrial sludge with high content in Cr was used as pollution source...
June 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28645020/do-we-see-how-they-perceive-risk-an-integrated-analysis-of-risk-perception-and-its-effect-on-workplace-safety-behavior
#5
Nini Xia, Xueqing Wang, Mark A Griffin, Chunlin Wu, Bingsheng Liu
While risk perception is a key factor influencing safety behavior, the academia lacks specific attention to the ways that workers perceive risk, and thus little is known about the mechanisms through which different risk perceptions influence safety behavior. Most previous research in the workplace safety domain argues that people tend to perceive risk based on rational formulations of risk criticality. However, individuals' emotions can be also useful in understanding their perceptions. Therefore, this research employs an integrated analysis concerning the rational and emotional perspectives...
June 20, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28644933/survey-of-hand-and-upper-extremity-injuries-among-rock-climbers
#6
Clayton E Nelson, Ghazi M Rayan, Dustin I Judd, Kai Ding, Julie A Stoner
BACKGROUND: Rock climbing first evolved as a sport in the late 18th century. With its growing popularity, the number of rock climbing-related injuries has potential to increase, spurring a rise in the number of articles associated with it. Despite the available literature, there remains a paucity of information about upper extremity injuries sustained by rock climbers, and no studies to date have focused on gender-specific injuries. METHODS: A 24-question online survey was distributed to rock climbers about upper extremity injuries sustained during rock climbing...
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28644835/physician-assessments-of-drug-seeking-behavior-a-mixed-methods-study
#7
Michael A Fischer, John B McKinlay, Jeffrey N Katz, Eric Gerstenberger, Felicia Trachtenberg, Lisa D Marceau, Lisa C Welch
BACKGROUND: Pain complaints are common, but clinicians are increasingly concerned about overuse of opioid pain medications. This may lead patients with actual pain to be stigmatized as "drug-seeking," or attempting to obtain medications they do not require medically. We assessed whether patient requests for specific opioid pain medication would lead physicians to classify them as drug-seeking and change management decisions. METHODS AND FINDINGS: Mixed-methods analysis of interviews with 192 office-based primary care physicians after viewing video vignettes depicting patients presenting with back pain...
2017: PloS One
https://www.readbyqxmd.com/read/28644817/graphene-based-humidity-sensors-the-origin-of-alternating-resistance-change
#8
Vasilii I Popov, Danil Nikolaev, Vladimir B Timofeev, Svetlana Smagulova, Irina Antonova
The response of graphene based humidity sensor is considered as a function of film structures. Analysis of resistance changes due to water molecule adsorption on graphene or multigraphene (MLG) surface is performed for films with a different resistivity from hundreds of Ohm/sq to hundreds of kOhm/sq. It has revealed a possible increase, decrease and non monotonous behavior of resistance. Adsorption of water molecules at grain boundary defects is supposed to lead to an increase in film resistivity due to the donor property of water and p-type conductivity of graphene...
June 23, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28644754/expression-of-enzymes-related-to-glucose-metabolism-in-non-small-cell-lung-cancer-and-prognosis
#9
Alexandra Giatromanolaki, Efthimios Sivridis, Stella Arelaki, Michael I Koukourakis
Purpose/Aim: Cancer cells are addicted to glycolytic anaerobic pathways, in presence or in absence of a functional Krebs' cycle (phenomenon Warburg). This metabolic predilection relies on both extracellular (impaired vascularization and oxygenation) and intracellular (oncogenic activation of genes) causes. MATERIALS AND METHODS: We investigated the expression and prognostic relevance of enzymes involved in the glucose absorption and metabolism, monocarboxylate transporter (MCT) expression, MCT1 and MCT2, pentose pathway (Glucose-6-phospahte dehydrogenase G6PD), glycogene synthesis (glycogene synthase GYS1), glycolysis (Hexokinase HXKII, phosphofructokinase PFK1, fructose biphosphate aldolase), fate of pyruvate (pyruvate dehydrogenase PDH, phosphorylated pPDH, PDH kinase PDK1, lactate dehydrogenase LDH5 and LDH1) and key Kreb's cycle enzymes (citrate synthase CSynth and isocitrate dehydrogenase IDH)...
June 23, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28644712/comparative-analysis-of-behavioral-and-transcriptional-variation-underlying-co2-sensory-neuron-function-and-development-in-drosophila
#10
Jia Wern Pan, Joi McLaughlin, Haining Yang, Charles Leo, Paula Rambarat, Sumie Okuwa, Anaïs Monroy-Eklund, Sabrina Clark, Corbin D Jones, Pelin Cayirlioglu Volkan
Carbon dioxide is an important environmental cue for many insects, regulating many behaviors including some that have direct human impacts. To further improve our understanding of how this system varies among closely related insect species, we examined both the behavioral response to CO2 as well as the transcriptional profile of key developmental regulators of CO2 sensory neurons in the olfactory system across the Drosophila genus. We found that CO2 generally evokes repulsive behavior across most of the Drosophilids we examined, but this behavior has been lost or reduced in several lineages...
June 23, 2017: Fly
https://www.readbyqxmd.com/read/28644662/novel-metal-insulator-transition-at-the-smtio_-3-srtio_-3-interface
#11
Kaveh Ahadi, Susanne Stemmer
We report on a metal-insulator transition (MIT) that is observed in an electron system at the SmTiO_{3}/SrTiO_{3} interface. This MIT is characterized by an abrupt transition at a critical temperature, below which the resistance changes by more than an order of magnitude. The temperature of the transition systematically depends on the carrier density, which is tuned from ∼1×10^{14} to 3×10^{14}  cm^{-2} by changing the SmTiO_{3} thickness. An analysis of the transport properties shows non-Fermi-liquid behavior and mass enhancement as the carrier density is lowered...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644655/formation-of-vacancies-in-si-and-ge-based-clathrates-role-of-electron-localization-and-symmetry-breaking
#12
Amrita Bhattacharya, Christian Carbogno, Bodo Böhme, Michael Baitinger, Yuri Grin, Matthias Scheffler
The formation of framework vacancies in Si- and Ge-based type-I clathrates is studied using density-functional theory as a function of filling the cages with K and Ba atoms. Our analysis reveals the relevance of structural disorder, geometric relaxation, and electronic saturation as well as vibrational and configurational entropy. In the Si clathrates, we find that vacancies are unstable, but very differently, in Ge clathrates, up to three vacancies per unit cell can be stabilized. This contrasting behavior is largely driven by the different energy gain on populating the electronic vacancy states, which originates from the different degree of localization of the valence orbitals of Si and Ge...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644565/long-term-risk-of-infection-in-patients-with-crohn-s-disease-on-anti-tnf-treatment-a-prospective-single-center-cohort-study-in-china
#13
Yue Li, Hui Jun Shu, Hong Lu, Hong Yang, Ji Li, Bei Tan, Jiaming Qian
BACKGROUND: Anti-TNF agents have demonstrated to greatly improve management strategies for inflammatory bowel disease (IBD). Clinical trials and registry studies in Western countries have shown that infections and malignancy are the most concerned complications of anti-TNF treatment. However, data derived from clinical practice in China are limited. The aim of this study is to explore the long-term infection risk of infliximab (IFX) in treating patients with Crohn's disease (CD) from a tertiary IBD center in China...
June 23, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28644551/erythema-multiforme-like-lesions-in-primary-cutaneous-aggressive-cytotoxic-epidermotropic-cd8-t-cell-lymphoma-a-diagnostic-and-therapeutic-challenge
#14
Carlo Tomasini, Mauro Novelli, Daniele Fanoni, Emilio Francesco Berti
Primary cutaneous aggressive epidermotropic CD8+ cytotoxic T-cell lymphoma (pCAECD8+ CTCL), is an extremely rare, rapidly progressing cutaneous lymphoma, with frequent systemic involvement, first recognized as a distinct clinicopathologic entity by Berti et al in 1999. (1) As the name suggests, this entity has an aggressive behavior and exhibits marked epidermotropism on histopathologic analysis. Conventional treatment modalities for classic CTCL are often ineffective and the prognosis is poor with a median survival of 12 months...
June 23, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28644530/long-term-outcome-of-anorexia-nervosa-results-from-a-large-clinical-longitudinal-study
#15
Manfred Maximilian Fichter, Norbert Quadflieg, Ross D Crosby, Sonja Koch
OBJECTIVE: Assessment of the long-term outcome of anorexia nervosa (AN) in a very large sample of inpatients (N = 1,693) and identification of predictors for poor outcome. METHOD: Over 25 years (mean 10 years), consecutively admitted inpatients of a specialized hospital were followed. A subsample of 112 patients with 20-year follow-up was defined. Bivariate comparisons and logistic regression analysis identified risk factors of poor outcome. RESULTS: Body mass index (BMI) increased during the follow-up period...
June 23, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/28644255/periodic-paralysis-and-encephalopathy-as-initial-manifestations-of-graves-disease-case-report-and-review-of-the-literature
#16
Theocharis Tsironis, Athanasios Tychalas, Dimitrios Kiourtidis, Jannis Kountouras, Georgia Xiromerisiou, Jobst Rudolf, Georgia Deretzi
BACKGROUND: Thyrotoxic periodic paralysis (TPP) is an uncommon complication of Graves' disease, characterized by the triad of acute hypokalemia without total body potassium deficit, episodic muscle paralysis, and thyrotoxicosis. Graves' encephalopathy is an extremely rare form of encephalopathy associated with autoimmune thyroid disease (EAATD), characterized by neuropsychiatric symptoms, increased antithyroid antibodies and cerebrospinal fluid protein concentration, nonspecific electroencephalogram abnormalities, and cortico-responsiveness...
July 2017: Neurologist
https://www.readbyqxmd.com/read/28643834/understanding-the-remarkable-luminescence-enhancement-via-sio2-coating-on-tio2-eu-3-nanofibers
#17
Meiqi Chang, Yanhua Song, Ye Sheng, Jie Chen, Haifeng Zou
TiO2:Eu(3+) nanofibers diameters can be tuned by changing the mixed solvent ratio are synthesized via the electrospinning technique. Concentration quenching phenomena and the relationship of the PL intensity ratio I((5)D0-(7)F2)/I((5)D0-(7)F1) with the Eu doping concentration are discussed. Notably, the luminescence intensity is enhanced by about 7.8 fold by coating SiO2 gel layer on the TiO2:Eu(3+) nanofibers, which is successfully performed via a sol-gel process followed by calcination. Furthermore, these fibers are characterized systematically via X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), Fourier transform infrared spectroscopy (FT-IR), and photoluminescence (PL) spectroscopy...
June 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28643615/migrant-caregiving-for-family-members-with-mild-cognitive-impairment-an-ethnographic-study
#18
Eleanor Holroyd, Jed Montayre, Sienna Ramsey, Victoria Egli
BACKGROUND: Migrant families caring for family members with mild cognitive impairment (MCI) face considerable socioeconomic burden and isolation. AIM: To examine the cultural needs, beliefs and health seeking behaviours of migrant Turkish family member caregivers. DESIGN: An ethnographic approach was used employing in depth interviews. METHODS: Turkish caregivers residing in Melbourne, Australia were purposively sampled...
June 23, 2017: Contemporary Nurse
https://www.readbyqxmd.com/read/28643406/prussian-blue-nanocubes-with-an-open-framework-structure-coated-with-pedot-as-high-capacity-cathodes-for-lithium-sulfur-batteries
#19
Dawei Su, Michael Cortie, Hongbo Fan, Guoxiu Wang
It is shown that Prussian blue analogues (PBAs) can be a very competitive sulfur host for lithium-sulfur (Li-S) batteries. Sulfur stored in the large interstitial sites of a PBA host can take advantage of reversible and efficient insertion/extraction of both Li(+) and electrons, due to the well-trapped mobile dielectron redox centers in the well-defined host. It is demonstrated that Na2 Fe[Fe(CN)6 ] has a large open framework, and as a cathode, it both stores sulfur and acts as a polysulfide diffusion inhibitor based on the Lewis acid-base bonding effect...
June 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28643242/what-influences-linkage-to-care-after-home-based-hiv-counseling-and-testing
#20
Reshma Naik, Wanga Zembe, Fatima Adigun, Elizabeth Jackson, Hanani Tabana, Debra Jackson, Frank Feeley, Tanya Doherty
To maximize the benefits of test and treat strategies that utilize community-based HIV testing, clients who test positive must link to care in a timely manner. However, linkage rates across the HIV treatment cascade are typically low and little is known about what might facilitate or hinder care-seeking behavior. This qualitative study was conducted within a home-based HIV counseling and testing (HBHCT) intervention in South Africa. In-depth interviews were conducted with 30 HBHCT clients who tested HIV positive to explore what influenced their care-seeking behavior...
June 22, 2017: AIDS and Behavior
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