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https://www.readbyqxmd.com/read/29341878/concentrations-of-arsenic-and-lead-in-rice-oryza-sativa-l-in-iran-a-systematic-review-and-carcinogenic-risk-assessment
#1
Yadolah Fakhri, Geir Bjørklund, Anoushiravan Mohseni Bandpei, Salvatore Chirumbolo, Hassan Keramati, Rokhsane Hosseini Pouya, Anvar Asadi, Nazak Amanidaz, Mansour Sarafraz, Amir Sheikhmohammadi, Zahra Baninameh, Seyed Mohsen Mohseni, Maryam Sarkhosh, Seyed Mehdi Ghasemi
Exposure to heavy metals such as arsenic (As), lead (Pb), and cadmium (Cd) in either the short or the long term can cause cancers in humans. Dietary intake and consumption of rice (Oryza sativa L.) is increasing in Iran, and several studies on the concentration of heavy metals in rice have been carried out in this country in recent years. In this perspective, the main objective of the present study was to investigate, even via a meta-analysis of the existing literature, the presence of As and Pb in rice from many geographical areas in Iran, as well as to estimate the carcinogenic risk of these heavy metals in rice consumers...
January 13, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29336004/point-of-care-urine-ethyl-glucuronide-testing-to-detect-alcohol-use-among-hiv-hepatitis-b-virus-coinfected-adults-in-zambia
#2
Michael J Vinikoor, Zude Zyambo, Monde Muyoyeta, Geetanjali Chander, Michael S Saag, Karen Cropsey
In an HIV-hepatitis B virus (HIV-HBV) coinfection cohort in Zambia, we piloted a qualitative point-of-care (POC) test for urine Ethyl glucuronide (uEtG), assessed concordance between uEtG and alcohol use disorders identification test-consumption (AUDIT-C), and identified epidemiological factors associated with underreporting (defined as uEtG-positivity with last reported drink > 7 days prior). Among 211 participants (40.8% women), there were 44 (20.8%) lifetime abstainers, 32 (15.2%) former drinkers, and 135 (64...
January 15, 2018: AIDS and Behavior
https://www.readbyqxmd.com/read/29300055/structural-changes-of-water-molecules-during-photoelectrochemical-water-oxidation-on-tio2-thin-film-electrodes
#3
Chandana Sampath Kumara Ranasinghe, Akira Yamakata
Behaviors of photogenerated charge carriers and structural changes of water molecules on TiO2 photoelectrodes were investigated by using time-resolved visible to mid-IR absorption spectroscopy. From the spectra measured in the visible to NIR region, it was shown that the lifetime of trapped electrons and holes becomes longer upon applying more positive potentials. This result was reasonably explained by the enhancement of the upward band bending at the water/TiO2 interface. On the other hand, from the spectra measured in the mid-IR region, structural changes of the water molecules were observed...
January 4, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29299213/prevalence-of-substance-abuse-among-students-of-tehran-university-of-medical-sciences-iran
#4
Rosanna Mozafarinia, Mehrdad Assarian, Ahmad Ziaaddini
Background: The present study aimed to evaluate the prevalence of substance abuse among students of selected schools of Tehran University of Medical Sciences, Iran. Methods: This was a cross-sectional study among students in five schools of Tehran University of Medical Sciences in 2014. Data collection was conducted using a questionnaire which was designed by the researcher. Questionnaires were distributed among participants selected using stratified random sampling...
April 2017: Addiction & Health
https://www.readbyqxmd.com/read/29291509/cognitive-physical-and-mental-health-outcomes-between-long-term-cannabis-and-tobacco-users
#5
M E Lovell, R Bruno, J Johnston, A Matthews, I McGregor, D J Allsop, N Lintzeris
INTRODUCTION: Cannabis intoxication adversely affects health, yet persistent effects following short-term abstinence in long-term cannabis users are unclear. This matched-subjects, cross-sectional study compared health outcomes of long-term cannabis and long-term tobacco-only users, relative to population norms. METHODS: Nineteen long-term (mean 32.3years of use, mean age 55.7years), abstinent (mean 15h) cannabis users and 16 long-term tobacco users (mean 37.1years of use, mean age 52...
December 9, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/29285736/beyond-conventional-medicine-a-look-at-blueberry-a-cancer-fighting-superfruit
#6
REVIEW
Kristoffer T Davidson, Ziwen Zhu, Dean Balabanov, Lei Zhao, Mark R Wakefield, Qian Bai, Yujiang Fang
Nearly 40% of men and women will be diagnosed with cancer during their lifetime. Thus, there is a rapidly growing need for novel therapies to combat this deadly disease. One such method is the consumption of blueberries. Long coveted for their powerful antioxidant properties, more recent studies have demonstrated that blueberries also exhibit inherent abilities to prevent carcinogenesis, inhibit the proliferation of neoplastic cells, and reduce the risks of recurrence in patients in remission. This review will focus on the specific activities of blueberry derivatives in cancer cells across many different forms of cancer...
December 28, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29283977/divergent-effects-of-hypertonic-fluid-resuscitation-on-renal-pathophysiological-and-structural-parameters-in-rat-model-of-lower-body-ischemia-reperfusion-induced-sterile-inflammation
#7
Bulent Ergin, Coert J Zuurbier, Aysegul Kapucu, Can Ince
The pathogenesis of acute kidney injury (AKI) is characterized by the deterioration of tissue perfusion and oxygenation and enhanced inflammation. The purpose of this study was to investigate whether or not the hemodynamic and inflammatory effects of hypertonic saline (HS) protect the kidney by promoting renal microcirculatory oxygenation and possible deleterious effects of HS due to its high sodium content on renal functional and structural injury following ischemia/reperfusion. Mechanically ventilated and anesthetized rats were randomly divided into four groups (n = 6 per group): a sham-operated control group; a group subjected to renal ischemia for 45 min by supra-aortic occlusion followed by 2 h of reperfusion (I/R); and I/R group treated with a continuous i...
December 27, 2017: Shock
https://www.readbyqxmd.com/read/29249992/gender-differences-and-psychopathological-features-associated-with-addictive-behaviors-in-adolescents
#8
Marco Di Nicola, Vittoria Rachele Ferri, Lorenzo Moccia, Isabella Panaccione, Annamaria Miriam Strangio, Daniela Tedeschi, Paolo Grandinetti, Antonino Callea, Fabio De-Giorgio, Giovanni Martinotti, Luigi Janiri
Background: The aims of the study were to assess prevalence and gender differences of addictive behaviors (substance- and non-substance-related) in an adolescent population, and their association with psychopathological features and academic performance. Material and methods: A sample of high school Italian students (n = 996; M = 240, F = 756) was examined using a self-report survey concerning sociodemographic characteristics, cigarette smoking, alcohol and substance use, perceived academic performance, activities, and behaviors (Internet use, gambling, and physical exercising)...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29240695/energy-efficient-real-time-scheduling-using-dpm-on-mobile-sensors-with-a-uniform-multi-cores
#9
Youngmin Kim, Ki-Seong Lee, Chan-Gun Lee
In wireless sensor networks (WSNs), sensor nodes are deployed for collecting and analyzing data. These nodes use limited energy batteries for easy deployment and low cost. The use of limited energy batteries is closely related to the lifetime of the sensor nodes when using wireless sensor networks. Efficient-energy management is important to extending the lifetime of the sensor nodes. Most effort for improving power efficiency in tiny sensor nodes has focused mainly on reducing the power consumed during data transmission...
December 14, 2017: Sensors
https://www.readbyqxmd.com/read/29227894/substance-induced-psychotic-symptoms-in-borderline-personality-disorder-among-substance-use-disorder-samples-in-spain
#10
Carmen Barral, Laia Rodríguez-Cintas, Lara Grau-López, Constanza Daigre, Elena Ros-Cucurull, Natalia Calvo, Marc Ferrer, Carlos Roncero
Substance-induced psychosis (SIP) is frequent in substance use disorder patients. However, little is known about the presence of SIP in Borderline Personality Disorder (BPD) and what the risk factors for the development of SIP in this population would be. A sample of 91 BPD drug-dependent patients attending an outpatient substance use disorder unit was evaluated. Comorbidity with Axis I and II was assessed using SCID-I and SCID-II. Psychoactive drug related variables were registered as well as the presence of the ninth criterion of DSM-IV-TR as a code of psychotic symptoms...
December 6, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29226116/alcohol-consumption-in-diabetic-patients-with-nonalcoholic-fatty-liver-disease
#11
Preya J Patel, David Smith, Jason P Connor, Leigh U Horsfall, Kelly L Hayward, Fabrina Hossain, Suzanne Williams, Tracey Johnson, Katherine A Stuart, Nigel N Brown, Nivene Saad, Andrew D Clouston, Katharine M Irvine, Anthony W Russell, Patricia C Valery, Elizabeth E Powell
Aim: To examine the association between lifetime alcohol consumption and significant liver disease in type 2 diabetic patients with NAFLD. Methods: A cross-sectional study assessing 151 patients with NAFLD at risk of clinically significant liver disease. NAFLD fibrosis severity was classified by transient elastography; liver stiffness measurements ≥8.2 kPa defined significant fibrosis. Lifetime drinking history classified patients into nondrinkers, light drinkers (always ≤20 g/day), and moderate drinkers (any period with intake >20 g/day)...
2017: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29225356/quantitative-neurobiological-evidence-for-accelerated-brain-aging-in-alcohol-dependence
#12
Matthias Guggenmos, Katharina Schmack, Maria Sekutowicz, Maria Garbusow, Miriam Sebold, Christian Sommer, Michael N Smolka, Hans-Ulrich Wittchen, Ulrich S Zimmermann, Andreas Heinz, Philipp Sterzer
The premature aging hypothesis of alcohol dependence proposes that the neurobiological and behavioural deficits in individuals with alcohol dependence are analogous to those of chronological aging. However, to date no systematic neurobiological evidence for this hypothesis has been provided. To test the hypothesis, 119 alcohol-dependent subjects and 97 age- and gender-matched healthy control subjects underwent structural MRI. Whole-brain grey matter volume maps were computed from structural MRI scans using voxel-based morphometry and parcelled into a comprehensive set of anatomical brain regions...
December 11, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/29218577/street-foods-exacerbate-effects-of-the-environmental-burden-of-polycyclic-aromatic-hydrocarbons-pahs-in-nigeria
#13
Osazuwa Clinton Ekhator, Nnaemeka Arinze Udowelle, Sorbari Igbiri, Rose Ngozi Asomugha, Chiara Frazzoli, Orish Ebere Orisakwe
Polycyclic aromatic hydrocarbons (PAHs) are a large group of well-known toxicants with carcinogenic potential and other health effects including on the immune system. The high health risks of non-communicable diseases and relevant comorbidities in Africa, particularly in contaminated areas like e-waste and crude oil and gas exploration areas and for high consumers of food commodity groupings which are most critical for PAH exposure, are exacerbated by dietary exposure due to unsafe practices in commonly consumed foods, like those street vended...
December 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29207568/recent-advances-in-fluorescence-lifetime-analytical-microsystems-contact-optics-and-cmos-time-resolved-electronics
#14
REVIEW
Liping Wei, Wenrong Yan, Derek Ho
Fluorescence spectroscopy has become a prominent research tool with wide applications in medical diagnostics and bio-imaging. However, the realization of combined high-performance, portable, and low-cost spectroscopic sensors still remains a challenge, which has limited the technique to the laboratories. A fluorescence lifetime measurement seeks to obtain the characteristic lifetime from the fluorescence decay profile. Time-correlated single photon counting (TCSPC) and time-gated techniques are two key variations of time-resolved measurements...
December 4, 2017: Sensors
https://www.readbyqxmd.com/read/29193430/a-novel-sterically-bulky-hole-transporter-to-remarkably-improve-the-lifetime-of-thermally-activated-delayed-fluorescent-oleds-at-high-brightness
#15
Takahiro Kamata, Hisahiro Sasabe, Masahiro Igarashi, Junji Kido
For the practical application of organic light emitting devices (OLEDs) based on thermally activated delayed fluorescence (TADF) for large area TV and solid state lighting, low power consumption as well as the operation lifetime at high brightness over 1,000 cd m-2 must be improved. Here, we have developed a novel hexaphenylbenzene-based sterically bulky hole-transport layer named 4DBTHPB with deep ionization potential of 5.8 eV and high triplet energy of 2.7 eV. By using 4DBTHPB, we can realize a highly efficient and stable TADF OLED exhibiting external quantum efficiency of 21...
November 28, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29189204/optimized-efficiency-in-inp-nanowire-solar-cells-with-accurate-1d-analysis
#16
Yang Chen, Pyry Kivisaari, Mats-Erik Pistol, Nicklas Anttu
Semiconductor nanowire arrays are a promising candidate for next generation solar cells due to enhanced absorption and reduced material consumption. However, to optimize their performance, time consuming three-dimensional (3D) opto-electronics modeling is usually performed. Here, we develop an accurate one-dimensional (1D) modeling method for the analysis. The 1D modeling is about 400 times faster than 3D modeling and allows direct application of concepts from planar pn-junctions on the analysis of nanowire solar cells...
November 30, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29188855/ginkgo-biloba-extract-consumption-and-long-term-occurrence-of-death-and-dementia
#17
J F Dartigues, L Grasset, C Helmer, C Féart, L Letenneur, H Jacqmin-Gadda, P Joly, H Amieva
OBJECTIVES: To study the benefit of Ginkgo Biloba Extract (GBe) consumption on the long term risk of dementia and death in elderly people. DESIGN: The Paquid study is a population-based cohort with regular follow-up screenings up to twenty-two years and systematic detection of incident cases of dementia. Statistical analysis was conducted with an illness-death model dealing with interval censoring of dementia and competing risk of death. SETTING: The sample was randomly selected from electoral rolls in two administrative areas of southwestern France in 1988-1989...
2017: Journal of Prevention of Alzheimer's Disease
https://www.readbyqxmd.com/read/29186167/deployment-based-lifetime-optimization-for-linear-wireless-sensor-networks-considering-both-retransmission-and-discrete-power-control
#18
Ruiying Li, Wenting Ma, Ning Huang, Rui Kang
A sophisticated method for node deployment can efficiently reduce the energy consumption of a Wireless Sensor Network (WSN) and prolong the corresponding network lifetime. Pioneers have proposed many node deployment based lifetime optimization methods for WSNs, however, the retransmission mechanism and the discrete power control strategy, which are widely used in practice and have large effect on the network energy consumption, are often neglected and assumed as a continuous one, respectively, in the previous studies...
2017: PloS One
https://www.readbyqxmd.com/read/29185935/dha-mediates-the-protective-effect-of-fish-consumption-on-new-episodes-of-depression-among-women
#19
John L Reeves, Petr Otahal, Costan G Magnussen, Terry Dwyer, Antti J Kangas, Pasi Soininen, Mika Ala-Korpela, Alison J Venn, Kylie J Smith
In a longitudinal cohort study of young Australian adults, we reported that for women higher baseline levels of fish consumption were associated with reduced incidence of new depressive episodes during the 5-year follow-up. Fish are high in both n-3 fatty acids and tyrosine. In this study, we seek to determine whether n-3 fatty acids or tyrosine explain the observed association. During 2004-2006, a FFQ (nine fish items) was used to estimate weekly fish consumption among 546 women aged 26-36 years. A fasting blood sample was taken and high-throughput NMR spectroscopy was used to measure 233 metabolites, including serum n-3 fatty acids and tyrosine...
November 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29177068/carbonate-rich-dendrolitic-cones-insights-into-a-modern-analog-for-incipient-microbialite-formation-little-hot-creek-long-valley-caldera-california
#20
James A Bradley, Leslie K Daille, Christopher B Trivedi, Caitlin L Bojanowski, Blake W Stamps, Bradley S Stevenson, Heather S Nunn, Hope A Johnson, Sean J Loyd, William M Berelson, Frank A Corsetti, John R Spear
Ancient putative microbial structures that appear in the rock record commonly serve as evidence of early life on Earth, but the details of their formation remain unclear. The study of modern microbial mat structures can help inform the properties of their ancient counterparts, but modern mineralizing mat systems with morphological similarity to ancient structures are rare. Here, we characterize partially lithified microbial mats containing cm-scale dendrolitic coniform structures from a geothermal pool ("Cone Pool") at Little Hot Creek, California, that if fully lithified, would resemble ancient dendrolitic structures known from the rock record...
2017: NPJ Biofilms and Microbiomes
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