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R Boni, A Gallo, S Cecchini
Owing to the progressive decline of sperm motility during storage there is a need to find substances capable of enhancing sperm energy metabolism and motility and/or preserving it from oxidative damage. The aim of this study was to evaluate in frozen/thawed bovine spermatozoa the effect of several compounds, such as myo-inositol, pentoxifylline, penicillamine + hypotaurine + epinephrine mixture (PHE), caffeine and coenzyme Q10+ zinc + d-aspartate mixture (CZA), on either kinetic or metabolic parameters. Sperm kinetics was evaluated by Sperm Class Analyser whereas specific fluorochromes were used to evaluated mitochondrial membrane potential (MMP), intracellular pH, intracellular calcium concentration and lipid peroxidation...
October 21, 2016: Andrology
Pearl L H Mok, Sussie Antonsen, Carsten Bøcker Pedersen, Roger T Webb
BACKGROUND: Younger or older parental age has been linked with a range of adverse offspring endpoints. We investigated associations between parental age and nine adverse offspring outcomes in three correlated domains: (i) Premature death: suicide, unnatural death, natural death; (ii) Psychiatric morbidity: any mental illness, suicide attempt, substance misuse; (iii) Criminality: violent offending, imprisonment, driving whilst intoxicated. METHODS: Persons born in Denmark 1966-1996 were followed from their 15th until 40th birthday or December 2011 (N=1,793,681)...
October 2, 2016: Journal of Affective Disorders
Adrian Meule, Martina de Zwaan, Astrid Müller
BACKGROUND: Impulsivity is a multifaceted construct and constitutes a common risk factor for a range of behaviors associated with poor self-control (e.g., substance use or binge eating). The short form of the Barratt Impulsiveness Scale (BIS-15) measures impulsive behaviors related to attentional (inability to focus attention or concentrate), motor (acting without thinking), and non-planning (lack of future orientation or forethought) impulsivity. Eating-related measures appear to be particularly related to attentional and motor impulsivity and recent findings suggest that interactive effects between these two facets may play a role in eating- and weight-regulation...
October 5, 2016: Comprehensive Psychiatry
Tian Hua, Kiran Vemuri, Mengchen Pu, Lu Qu, Gye Won Han, Yiran Wu, Suwen Zhao, Wenqing Shui, Shanshan Li, Anisha Korde, Robert B Laprairie, Edward L Stahl, Jo-Hao Ho, Nikolai Zvonok, Han Zhou, Irina Kufareva, Beili Wu, Qiang Zhao, Michael A Hanson, Laura M Bohn, Alexandros Makriyannis, Raymond C Stevens, Zhi-Jie Liu
Cannabinoid receptor 1 (CB1) is the principal target of Δ(9)-tetrahydrocannabinol (THC), a psychoactive chemical from Cannabis sativa with a wide range of therapeutic applications and a long history of recreational use. CB1 is activated by endocannabinoids and is a promising therapeutic target for pain management, inflammation, obesity, and substance abuse disorders. Here, we present the 2.8 Å crystal structure of human CB1 in complex with AM6538, a stabilizing antagonist, synthesized and characterized for this structural study...
October 20, 2016: Cell
Richard A Manderville, Stacey D Wetmore
The formation of DNA adducts by the attack of intermediates derived from toxic substances at the C8 position of 2-deoxyguanosine (dG) is a common damaging event. Although the majority of studies on C8-dG adducts have focused on lesions containing a C8-N-C tether between the bulky moiety and the nucleobase, the formation of O-linked lesions with a similar tether topology and C-linked adducts involving direct C8-C connectivity have also been uncovered. Several studies have been done to try to better understand the structural impact and mutagenicity of O-linked and C-linked aryl C8-dG adducts, including lesions arising from unsubstituted and chloro substituted phenols, and the food mutagen ochratoxin A (OTA)...
October 21, 2016: Chemical Research in Toxicology
Marion Tegethoff, Esther Stalujanis, Angelo Belardi, Gunther Meinlschmidt
BACKGROUND: The objective was to estimate temporal associations between mental disorders and physical diseases in adolescents with mental-physical comorbidities. METHODS: This article bases upon weighted data (N = 6483) from the National Comorbidity Survey Adolescent Supplement (participant age: 13-18 years), a nationally representative United States cohort. Onset of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition lifetime mental disorders was assessed with the fully structured World Health Organization Composite International Diagnostic Interview, complemented by parent report...
2016: PloS One
Lotta Walz, Anna K Jönsson, Brita Zilg, Carl Johan Östgren, Henrik Druid
AIMS/HYPOTHESIS: The aim of this study was to identify risk factors associated with confirmed fatal hyperglycaemia, which could predispose potentially preventable deaths in individuals on glucose lowering drugs. METHODS: A retrospective register-based case-control study conducted on a nationwide cohort with individuals who died due to hyperglycaemia as determined by forensic postmortem examination, in Sweden August 2006 to December 2012. Vitreous glucose was used to diagnose hyperglycaemia postmortem...
2016: PloS One
B Hehlen, M Al-Sabbagh, A Al-Zein, J Hlinka
The fluctuations of electric polarization in a disordered ferroelectric substance, relaxor crystal PbMg_{1/3}Nb_{2/3}O_{3} (PMN), were studied using a nonlinear inelastic light-scattering technique, hyper-Raman scattering, within a 5-100  cm^{-1} spectral interval and in a broad temperature range from 20 to 900 K. The split ferroelectric mode reveals a local anisotropy of up to about 400 K. Spectral anomalies observed at higher temperatures are explained as due to avoided crossing of the single primary polar soft mode with a temperature-independent, nonpolar spectral feature near 45  cm^{-1}, known from Raman scattering...
October 7, 2016: Physical Review Letters
Simon Felz, Salah Al-Zuhairy, Olav Andreas Aarstad, Mark C M van Loosdrecht, Yue Mei Lin
To evaluate and develop methodologies for the extraction of gel-forming extracellular polymeric substances (EPS), EPS from aerobic granular sludge (AGS) was extracted using six different methods (centrifugation, sonication, ethylenediaminetetraacetic acid (EDTA), formamide with sodium hydroxide (NaOH), formaldehyde with NaOH and sodium carbonate (Na2CO3) with heat and constant mixing). AGS was collected from a pilot wastewater treatment reactor. The ionic gel-forming property of the extracted EPS of the six different extraction methods was tested with calcium ions (Ca(2+))...
September 26, 2016: Journal of Visualized Experiments: JoVE
Tabitha Bucher, Elena Kartvelishvily, Ilana Kolodkin-Gal
This work assesses different methodologies to study the impact of small molecule biofilm inhibitors, such as D-amino acids, on the development and resilience of Bacillus subtilis biofilms. First, methods are presented that select for small molecule inhibitors with biofilm-specific targets in order to separate the effect of the small molecule inhibitors on planktonic growth from their effect on biofilm formation. Next, we focus on how inoculation conditions affect the sensitivity of multicellular, floating B...
October 9, 2016: Journal of Visualized Experiments: JoVE
Erik David Storholm, Michael J Silverberg, Derek D Satre
Access to substance use disorder (SUD) treatment is a critical issue for women with HIV. This study examined differences in SUD diagnoses, comorbid psychiatric diagnoses, and predictors of SUD treatment initiation among a diverse sample of HIV-positive women (n = 228) and a demographically similar cohort of HIV-negative women (n = 693). Diagnoses and service utilization data were obtained from electronic health records of members of a large integrated healthcare system in Northern California. HIV-positive women were less likely to initiate SUD treatment...
October 21, 2016: Journal of Psychoactive Drugs
Mansoo Yu, Paulette E Chavez, René Olate, Clark Peters
Although Latino/Hispanic adolescent substance use is a growing research area in the United States, there is little research examining the prevalence and factors associated with adolescent cigarette smoking status in this population. A nationally representative sample of 5,929 middle and high Latino/Hispanic students in the 2009 US National Youth Tobacco Survey was selected to assess the prevalence and various risk and protective factors associated with cigarette smoking status. Results revealed one in five (20%) were experimental smokers, nearly one in eleven (8...
October 21, 2016: Substance Use & Misuse
A Furuhama, T I Hayashi, N Tatarazako
We constructed models for acute to chronic estimation of the Daphnia magna reproductive toxicities of chemical substances from their Daphnia magna acute immobilization toxicities. The models combined the acute toxicities with structural and physicochemical descriptors. We used multiregression analysis and selected the descriptors for the models by means of a genetic algorithm. Of the best 100 models (as indicated by the lack of fit score), 90% included the following descriptors: acute toxicity (i.e. an activity parameter), distribution coefficient (log D) and structural indicator variables that indicate the presence of -NH2 attached to aromatic carbon and the presence of a chlorine atom...
October 21, 2016: SAR and QSAR in Environmental Research
Abdullah Turhan, Simone Onrust, Peter Ten Klooster, Marcel Pieterse
AIMS: To test effectiveness of the Healthy School and Drugs (HSD) program on tobacco and alcohol use in Dutch secondary special education (SE) schools, and whether this depends on subtypes of SE-schools and the level of implementation. DESIGN: In a quasi-experimental design with baseline and post-treatment follow-up 35 classes (N = 363) were allocated arbitrarily or depending on teacher motivation to either intervention condition (N = 205) or usual curriculum (N = 158)...
October 21, 2016: Addiction
Mutlu Mete, Unal Sakoglu, Jeffrey S Spence, Michael D Devous, Thomas S Harris, Bryon Adinoff
BACKGROUND: Neuroimaging studies have yielded significant advances in the understanding of neural processes relevant to the development and persistence of addiction. However, these advances have not explored extensively for diagnostic accuracy in human subjects. The aim of this study was to develop a statistical approach, using a machine learning framework, to correctly classify brain images of cocaine-dependent participants and healthy controls. In this study, a framework suitable for educing potential brain regions that differed between the two groups was developed and implemented...
October 6, 2016: BMC Bioinformatics
Alessandro Minarini, Silvia Ferrari, Martina Galletti, Nina Giambalvo, Daniela Perrone, Giulia Rioli, Gian Maria Galeazzi
N-acetylcysteine (NAC) is widely known for its role as a mucolytic and as an antidote to paracetamol overdose. There is increasing interest in the use of NAC in the treatment of several psychiatric disorders. The rationale for the administration of NAC in psychiatric conditions is based on its role as a precursor to the antioxidant glutathione, and its action as a modulating agent of glutamatergic, dopaminergic, neurotropic and inflammatory pathways. Areas covered: This study reviews the available data regarding the use of NAC in different psychiatric disorders including substance use disorders, autism, obsessive-compulsive spectrum disorders, schizophrenia, depression, bipolar disorder...
October 21, 2016: Expert Opinion on Drug Metabolism & Toxicology
Adeyemi S Adeleye, Arturo A Keller
The implications of engineered nanomaterials (ENMs) in the environment are often investigated using pristine particles. However, there are several biogenic and geogenic materials in natural waters that interact with and modify the surface of ENMs, thereby influencing their fate and effects. Here we studied the influence of soluble extracellular polymeric substances (sEPS) produced by freshwater and marine algae on the surface properties and fate of three commercial TiO2 nanoparticles (nTiO2) with different coatings...
October 21, 2016: Environmental Science & Technology
Jennifer L Pilgrim, Elizabeth L Jenkins, Yeliena Baber, David Caldicott, Olaf H Drummer
BACKGROUND AND AIMS: Fatal poisonings in children comprise a small proportion of cases investigated by an Australian coroner; however, they present a major opportunity for death prevention. This study aimed to examine fatal child poisonings in Australia to 1) estimate the rate of acute poisoning deaths in children; 2) describe the key characteristics of the cohort; and 3) describe the outcomes of coronial recommendations made as a death prevention measure. DESIGN: Retrospective case series...
October 21, 2016: Addiction
Andreas Arendt, El-Sayed Baz, Monika Stengl
The circadian pacemaker of the Madeira cockroach Rhyparobia (Leucophaea) maderae is located in the accessory medulla (AME). Ipsi- and contralateral histaminergic compound eyes are required for photic entrainment. Light pulses delayed locomotor activity rhythms during the early night and advanced during the late night. Thus, different neuronal pathways might relay either light-dependent delays or advances to the clock. Injections of neuroactive substances combined with running-wheel assays suggested that GABA, PDF, myoinhibitory peptides (MIPs), and orcokinins (ORCs) are part of both entrainment pathways, while allatotropin (AT) only delayed locomotor rhythms at the early night...
October 20, 2016: Journal of Comparative Neurology
Mingzhu Xia, Yuting Chu, Tianyi Wang, Wu Lei, Fengyun Wang
As a kind of promising energetic materials, the double furazan-based and furoxan-based compounds have raised concerns of many researchers in recent years. In this paper, the optimized structures, energetic properties, heat of formation (HOF), detonation properties, and bond dissociation energies of these compounds were calculated by density functional theory (DFT) method. The results show that the N-O bond, which is close to the adjacent coordinated oxygen atom in furoxan ring, is more fragile than the other N-O bonds in the ring...
November 2016: Journal of Molecular Modeling
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