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https://www.readbyqxmd.com/read/28821549/phosphate-catalyzed-hydrogen-peroxide-formation-from-agar-gellan-and-%C3%AE%C2%BA-carrageenan-and-recovery-of-microorganisms-cultivability-by-catalase-and-pyruvate
#1
Kosei Kawasaki, Yoichi Kamagata
Previously, we reported that when agar is autoclaved with phosphate buffer, H2O2 is formed in the resulting medium (PT) and the colony count on the medium inoculated with environmental samples becomes much lower than that on a medium in which agar and phosphate are autoclaved separately (PS) (Appl Environ Microbiol 80:7659-7666). However, the physicochemical mechanisms underlying this observation remain largely unknown. Here, we determined the factors affecting H2O2 formation in agar. The H2O2 formation was pH-dependent: H2O2 was formed at high concentrations in alkaline or neutral phosphate buffer, but not in acidic one...
August 18, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28821542/human-hepatocyte-metabolism-of-novel-synthetic-cannabinoids-mn-18-and-its-5-fluoro-analog-5f-mn-18
#2
Xingxing Diao, Jeremy Carlier, Mingshe Zhu, Marilyn A Huestis
BACKGROUND: In 2014, 2 novel synthetic cannabinoids, MN-18 and its 5-fluoro analog, 5F-MN-18, were first identified in an ongoing survey of novel psychoactive substances in Japan. In vitro pharmacological assays revealed that MN-18 and 5F-MN-18 displayed high binding affinities to human CB1 and CB2 receptors, with Ki being 1.65-3.86 nmol/L. MN-18 and 5F-MN-18 were scheduled in Japan and some other countries in 2014. Despite increasing prevalence, no human metabolism data are currently available, making it challenging for forensic laboratories to confirm intake of MN-18 or 5F-MN-18...
August 18, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28816367/the-in-vitro-and-in-vivo-antiangiogenic-effects-of-flavokawain-b
#3
Mariana C Rossette, Débora C Moraes, Erika K Sacramento, Marco Aurélio Romano-Silva, Juliana L Carvalho, Dawidson A Gomes, Hanna Caldas, Eitan Friedman, Luciana Bastos-Rodrigues, Luiz De Marco
Angiogenesis is implicated in the development of a variety of pathological processes, most commonly cancer. It is essential for tumor growth and metastasis, making it an important cancer therapeutic target. Naturally occurring substances have led to the discovery of anticancer agents. Flavokawain B (FKB), a chalcone isolated from the root extracts of kava-kava plant, inhibits proliferation and causes apoptosis in vitro and in vivo of various cancer cell lines. The antimetastatic potential of FKB has also been suggested...
August 17, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28815697/case-control-study-of-chronic-low-level-exposure-of-inorganic-arsenic-species-and-non-melanoma-skin-cancer
#4
Tae-Hoon Kim, Jeong-Wook Seo, Young-Seoub Hong, Ki-Hoon Song
A significant relationship between arsenic exposure and non-melanoma skin cancer (NMSC) is well known. The toxicity of arsenics which develop NMSC is dependent on their species. Accordingly, total arsenic levels are unreliable for risk assessment of NMSC. However, there are few studies on quantitative exposure assessment of arsenic species in NMSC patients. To validate the contribution of each arsenic species to NMSC, we compared the creatinine-adjusted urinary concentration of arsenic species in NMSC patients and community controls...
August 16, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28815629/impulsive-decision-making-in-young-adult-social-drinkers-and-detoxified-alcohol-dependent-patients-a-cross-sectional-and-longitudinal-study
#5
Nadine Bernhardt, Stephan Nebe, Shakoor Pooseh, Miriam Sebold, Christian Sommer, Julian Birkenstock, Ulrich S Zimmermann, Andreas Heinz, Michael N Smolka
BACKGROUND: Impulsive decision making relates to problematic substance use. Specifically, altered delay discounting has been suggested as a behavioral marker for addiction, while other relevant facets of choice impulsivity such as probability discounting or loss aversion are clearly understudied. METHODS: Two studies were performed collecting behavioral data on choice impulsivity with a value-based decision-making battery providing estimates of delay discounting, probability discounting for gains and losses, and loss aversion...
August 17, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28815091/-spice-synthetic-marijuana-induced-acute-myocardial-infarction-a-case-series
#6
E Ul Haq, A Shafiq, A A Khan, A A Awan, S Ezad, W J Minteer, B Omar
Marijuana is the most widely abused "recreational" substance in the United States, with highest prevalence in young adults. It is reported to cause ischemic strokes, hepatitis, anxiety, and psychosis. Although it is associated with dose dependent tachycardia and can lead to coronary vasospasm, it has not been directly related to acute myocardial infarction (AMI). Marijuana induced coronary vasospasm can result in endothelial denudation at the site of a vulnerable atherosclerotic plaque in response to hemodynamic stressors, potentially causing an AMI...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28814330/novel-remote-electronic-medication-supply-model-for-opioid-dependent-outpatients-with-polypharmacy-first-long-term-case-study
#7
Samuel S Allemann, Kenneth M Dürsteler, Johannes Strasser, Marc Vogel, Marcel Stoeckle, Kurt E Hersberger, Isabelle Arnet
BACKGROUND: Patients with substance use disorders grow older thanks to effective treatments. Together with a high prevalence of comorbidities, psychological problems, and low social support, these patients are at high risk for medication non-adherence. Established treatment facilities face challenges to accommodate these complex patients within their setting. Electronic medication management aids (e-MMAs) might be appropriate to simultaneously monitor and improve adherence for these patients...
August 16, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/28814121/perceptions-of-iranian-female-drug-users-toward-hiv-testing-a-qualitative-content-analysis
#8
Mansoureh Jamshidimanesh, Effat Merghati Khoie, Seyed Abbas Mousavi, Afsaneh Keramat, Mohammad Hassan Emamian
BACKGROUND: Drug-dependent women are the vulnerable population deprived of access to health services and also have particular relevance to public health perspective because they are important bridge population for driving HIV/AIDS epidemic. This qualitative study aimed to explore the perception of drug-dependent women regarding HIV testing. METHODS: In this qualitative study, we approached 23 women with substance use disorders in 2 of the selected drop-in centers in the south Tehran...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/28813562/polygenic-scores-for-major-depressive-disorder-and-risk-of-alcohol-dependence
#9
Allan M Andersen, Robert H Pietrzak, Henry R Kranzler, Li Ma, Hang Zhou, Xiaoming Liu, John Kramer, Samuel Kuperman, Howard J Edenberg, John I Nurnberger, John P Rice, Jay A Tischfield, Alison Goate, Tatiana M Foroud, Jacquelyn L Meyers, Bernice Porjesz, Danielle M Dick, Victor Hesselbrock, Eric Boerwinkle, Steven M Southwick, John H Krystal, Myrna M Weissman, Douglas F Levinson, James B Potash, Joel Gelernter, Shizhong Han
Importance: Major depressive disorder (MDD) and alcohol dependence (AD) are heritable disorders with significant public health burdens, and they are frequently comorbid. Common genetic factors that influence the co-occurrence of MDD and AD have been sought in family, twin, and adoption studies, and results to date have been promising but inconclusive. Objective: To examine whether AD and MDD overlap genetically, using a polygenic score approach. Design, Settings, and Participants: Association analyses were conducted between MDD polygenic risk score (PRS) and AD case-control status in European ancestry samples from 4 independent genome-wide association study (GWAS) data sets: the Collaborative Study on the Genetics of Alcoholism (COGA); the Study of Addiction, Genetics, and Environment (SAGE); the Yale-Penn genetic study of substance dependence; and the National Health and Resilience in Veterans Study (NHRVS)...
August 16, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28813208/substance-use-and-dependence-among-current-reserve-and-former-military-members-cross-sectional-findings-from-the-national-survey-on-drug-use-and-health-2010-2014
#10
Rachel A Hoopsick, Jennifer Fillo, Bonnie M Vest, D Lynn Homish, Gregory G Homish
BACKGROUND: Maladjustment after leaving the military may contribute to poor health outcomes, including increased risk for substance use and dependence. AIMS: We aimed to examine differences in substance use and dependence on the basis of military involvement in a large nationally representative sample. METHODS: Data are from a subset of the 2010-2014 waves of the National Survey on Drug Use and Health (N = 5,608). Our sample included men and women aged 20-49 years who had either separated/retired from the military (n = 4,862) or were a current reserve soldier (n = 746)...
August 16, 2017: Journal of Addictive Diseases
https://www.readbyqxmd.com/read/28812082/a-broader-view-on-ion-heating-in-traveling-wave-devices-using-fragmentation-of-csi-clusters-and-extent-of-h%C3%AB-migration-as-molecular-thermometers
#11
Frederik Lermyte, Frank Sobott
Electron transfer dissociation (ETD) is becoming increasingly important in mass spectrometry-based analysis of peptides and proteins. Supplemental collisional activation of undissociated electron transfer products can significantly increase fragmentation yield and sequence coverage, but hydrogen rearrangements - specifically, transfer of a hydrogen radical from a c to a z fragment - lead to distorted isotope distributions and increased potential for signal overlap. Concomitant collisional activation during the ion/ion reaction significantly reduces these rearrangements, but, in ion traps, also leads to lower reaction rates and reduced overlap of anion and cation clouds...
August 16, 2017: Analyst
https://www.readbyqxmd.com/read/28810899/chronic-pain-and-opioid-misuse-a-review-of-reviews
#12
REVIEW
Pauline Voon, Mohammad Karamouzian, Thomas Kerr
OBJECTIVE: The crisis of prescription opioid (PO) related harms has focused attention toward identifying and treating high-risk populations. This review aims to synthesize systematic reviews on the epidemiology and clinical management of comorbid chronic pain and PO or other substance misuse. METHODS: A systematic database search was conducted to identify systematic reviews published between 2000 and 2016. Eligible studies were systematic reviews related to chronic non-cancer pain and PO or other substance misuse...
August 15, 2017: Substance Abuse Treatment, Prevention, and Policy
https://www.readbyqxmd.com/read/28810753/dynamical-transition-in-molecular-glasses-and-proteins-observed-by-spin-relaxation-of-nitroxide-spin-probes-and-labels
#13
Elena A Golysheva, Georgiy Yu Shevelev, Sergei A Dzuba
In glassy substances and biological media, dynamical transitions are observed in neutron scattering that manifests itself as deviations of the translational mean-squared displacement, 〈x(2)〉, of hydrogen atoms from harmonic dynamics. In biological media, the deviation occurs at two temperature intervals, at ∼100-150 K and at ∼170-230 K, and it is attributed to the motion of methyl groups in the former case and to the transition from harmonic to anharmonic or diffusive motions in the latter case. In this work, electron spin echo (ESE) spectroscopy-a pulsed version of electron paramagnetic resonance-is applied to study the spin relaxation of nitroxide spin probes and labels introduced in molecular glass former o-terphenyl and in protein lysozyme...
August 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28810512/co-digestion-of-rice-straw-and-cow-dung-to-supply-cooking-fuel-and-fertilizers-in-rural-india-impact-on-human-health-resource-flows-and-climate-change
#14
Sophie Sfez, Steven De Meester, Jo Dewulf
Anaerobic digestion of cow dung with new feedstock such as crop residues to increase the biogas potential is an option to help overcoming several issues faced by India. Anaerobic digestion provides biogas that can replace biomass cooking fuels and reduce indoor air pollution. It also provides digestate, a fertilizer that can contribute to compensate nutrient shortage on agricultural land. Moreover, it avoids the burning of rice straw in the fields which contributes to air pollution in India and climate change globally...
August 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28809540/simplified-modeling-of-organic-contaminant-adsorption-by-activated-carbon-and-biochar-in-the-presence-of-dissolved-organic-matter-and-other-competing-adsorbates
#15
Kyle Koyu Shimabuku, Julian M Paige, Marisol Luna Agüero, R Scott Summers
Cyclohexanol, phenol, benzoic acid, and phenanthrene fractional removal (italicized words are defined within the main text) by pulverized granular activated carbon and biochar adsorption in deionized water and stormwater was independent of target-adsorbate initial concentrations (C0) when C0s were below concentration thresholds. This permits a simple-modeling approach. C0-independent removal in deionized water at low-target-adsorbate concentrations potentially suggests that DOM in the deionized water induce a competitive effect that causes deviations from the Freundlich model...
August 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28809444/circannual-variation-of-mitotane-and-its-metabolites-plasma-levels-in-patients-with-adrenocortical-carcinoma
#16
Jessica Cusato, Silvia De Francia, Sarah Allegra, Simona Carrella, Elisa Pirro, Francesca Maria Piccione, Francesca De Martino, Anna Ferrero, Fulvia Claudia Daffara, Massimo Terzolo, Alfredo Berruti, Francesco Di Carlo, Marco Tampellini, Antonio D'Avolio
OBJECTIVES: Mitotane is the reference drug for the adrenocortical carcinoma treatment; its pharmacological activity seems to depend on drug transformation in two active metabolites: o,p'-DDE (dichlorodiphenylethene) and o,p'-DDA (dichlorodiphenylacetate). Mitotane and metabolites are lipophilic agents; thus, they tend to accumulate into adipose tissues (white and brown), which change their prevalence seasonally. Aim of the work was to evaluate mitotane and metabolites plasma levels variation over the year, in adrenocortical cancer patients treated with Lysodren(®) for at least 6 months...
August 15, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28806734/mental-health-among-single-and-partnered-parents-in-south-korea
#17
Kyoung Ae Kong, Hee Yeon Choi, Soo In Kim
OBJECTIVE: This study compares the mental health of single parents relative to partnered parents and assesses the contribution of the social and demographic factors to this difference, examining the gender difference in it. METHODS: We analyzed 12,024 single and partnered subjects, aged 30-59 years, living with children, aged 0-19 years, drawn from the 4th, 5th, and 6th Korea National Health and Nutrition Examination Survey (KNHANES) dataset in South Korea conducted from 2007-2013...
2017: PloS One
https://www.readbyqxmd.com/read/28806640/the-importance-of-nutrition-in-aiding-recovery-from-substance-use-disorders-a-review
#18
REVIEW
Kendall D Jeynes, E Leigh Gibson
BACKGROUND: Nutrition is a prerequisite for health; yet, there is no special nutritional assessment or guidance for drug and alcohol dependent individuals, despite the fact that their food consumption is often very limited, risking malnutrition. Further, the premise is examined that malnutrition may promote drug seeking and impede recovery from substance use disorders (SUD). METHOD: A narrative review addressed the relationship between substance use disorders and nutrition, including evidence for malnutrition, as well as their impact on metabolism and appetite regulation...
August 4, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28805974/effect-of-single-nucleotide-polymorphisms-in-adh1b-adh4-adh1c-oprm1-drd2-bdnf-and-aldh2-genes-on-alcohol-dependence-in-a-caucasian-population
#19
Martha-Spyridoula Katsarou, Konstantinos Karakonstantis, Nikolaos Demertzis, Emmanouil Vourakis, Aspasia Skarpathioti, Aleksandr E Nosyrev, Aristidis Tsatsakis, Theodoris Kalogridis, Nikolaos Drakoulis
Alcohol is a frequently used addictive substance worldwide. Aim of this study is to determine the frequency distribution of SNPs within ADH1B, ADH4, ADH1C, ALDH2, BDNF, OPRM1, and DRD2 genes in a southeastern European Caucasian population from Greece. For this purpose samples of 1276 volunteers were analyzed after deidentification and anonymization. The allele distribution of the examined polymorphisms in the present Greek population cohort was as follows: rs1229984 (ADH1B): GG(wt) = 64.14%, GA = 29.86%, AA = 4...
August 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28805763/-angiogenesis-mechanisms-in-the-formation-of-structural-changes-of-brain-tissue-in-patients-with-progressive-cerebrovascular-disease
#20
O N Voskresenskaya, N B Zaharova, Yu S Tarasova, N E Tereshkina, V A Perepelov, E M Perepelova
AIM: To study the correlation between expressiveness of focal changes of brain tissue and VEGF and MCP-1 levels in plasma and blood serum of patients with chronic cerebral ischemia (CCI). MATERIAL AND METHODS: Markers of inflammation (MCP-1, CRP) and angiogenesis (VEGF) in serum and blood plasma of 35 patients with CCI depending on expressiveness of structural changes of brain substance according to MRI were investigated. RESULTS: The increase in MCP-1 and CRP content in blood serum and simultaneous decrease in VEGF level in serum and blood plasma were correlated with the increase in the number of focal changes of substance of the brain in patients with CCI...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
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