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https://www.readbyqxmd.com/read/28931165/adolescents-and-young-adults-perceptions-of-electronic-cigarettes-as-a-gateway-to-smoking-a-qualitative-study-in-switzerland
#1
Christina Akre, Joan-Carles Suris
Electronic cigarettes (ECs) acting as a gateway to smoking traditional cigarettes (TCs) is a growing public health concern of EC use among youths. To gather the opinions and perceptions of adolescents and young adults (AYAs) on whether and how EC can act as a gateway to smoking TC among youths. A qualitative method included 42 AYAs. Participants identified a significant risk of EC acting as a gateway to TC use, several factors contributing to this phenomenon such as a facilitated transition to smoking or its perception as a harmless toy...
October 1, 2017: Health Education Research
https://www.readbyqxmd.com/read/28930436/development-of-a-cigarette-tobacco-filler-standard-reference-material
#2
Lane C Sander, Jeanita S Pritchett, Yasmine C Daniels, Laura J Wood, Brian E Lang, Stephen A Wise, James H Yen, Tricia L Johnson, Matthew J Walters, Tracy Phillips, Matthew R Holman, Grace E Lee, Joseph G Lisko, Brian Lane, Liza Valentin-Blasini, Clifford Watson
A new tobacco filler Standard Reference Material (SRM) has been issued by the National Institute of Standards and Technology (NIST) in September 2016 with certified and reference mass fraction values for nicotine, N-nitrosonornicotine, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, and volatiles. The constituents have been determined by multiple analytical methods with measurements at NIST and at the Centers for Disease Control and Prevention, and with confirmatory measurements by commercial laboratories. This effort highlights the development of the first SRM for reduced nicotine and reduced tobacco-specific nitrosamines with certified values for composition...
September 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28929692/-metabolomics-of-bovine-serum-albumin-induced-allergic-reactions-based-on-uplc-q-tof-ms
#3
Yuan-Yuan Gu, Dan-Dan Zhang, Cheng Feng, Yu Wang, Da-Zhong Chen, Yan-Hong Wang
The metabonomic techniques were used to study the changes in endogenous metabolites between urines of rats in normal physiological conditions and bovine serum albumin induced allergic reactions, identify potential biomarkers associated with allergic reactions, and then analyze the metabolic pathways and the metabolic mechanisms of allergic reactions. The bovine serum albumin-induced allergic reactions in rats were adopted as a model to detect histamine and tryptase in rat serum and observe the issue morphology of lungs and trachea in rats...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28928940/comparison-of-color-discrimination-in-chronic-heavy-smokers-and-healthy-subjects
#4
Thiago Monteiro de Paiva Fernandes, Natanael Antonio Dos Santos
Background: Cigarette smoke is probably the most significant source of exposure to toxic chemicals for humans, involving health-damaging components, such as nicotine, hydrogen cyanide and formaldehyde. The aim of the present study was to assess the influence of chronic heavy smoking on color discrimination (CD). Methods: All subjects were free of any neuropsychiatric disorder, identifiable ocular disease and had normal acuity. No abnormalities were detected in the fundoscopic examination and in the optical coherence tomography exam...
2017: F1000Research
https://www.readbyqxmd.com/read/28928637/alpha7-nicotinic-acetylcholine-receptors-play-a-predominant-role-in-the-cholinergic-potentiation-of-n-methyl-d-aspartate-evoked-firing-responses-of-hippocampal-ca1-pyramidal-cells
#5
Zsolt K Bali, Lili V Nagy, István Hernádi
The aim of the present study was to identify in vivo electrophysiological correlates of the interaction between cholinergic and glutamatergic neurotransmission underlying memory. Extracellular spike recordings were performed in the hippocampal CA1 region of anesthetized rats in combination with local microiontophoretic administration of N-methyl-D-aspartate (NMDA) and acetylcholine (ACh). Both NMDA and ACh increased the firing rate of the neurons. Furthermore, the simultaneous delivery of NMDA and ACh resulted in a more pronounced excitatory effect that was superadditive over the sum of the two mono-treatment effects and that was explained by cholinergic potentiation of glutamatergic neurotransmission...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28928312/getting-real-with-the-upcoming-challenge-of-electronic-nicotine-delivery-systems-the-way-forward-for-the-south-east-asia-region
#6
REVIEW
Jagdish Kaur, Arvind Vashishta Rinkoo
Electronic nicotine delivery systems (ENDS) are being marketed to tobacco smokers for use in places where smoking is not allowed or as aids similar to pharmaceutical nicotine products to help cigarette smokers quit tobacco use. These are often flavored to make them more attractive for youth - ENDS use may lead young nonsmokers to take up tobacco products. Neither safety nor efficacy as a cessation aid of ENDS has been scientifically demonstrated. The adverse health effects of secondhand aerosol cannot be ruled out...
September 2017: Indian Journal of Public Health
https://www.readbyqxmd.com/read/28928157/alteration-of-cholinergic-anti-inflammatory-pathway-in-rat-with-ischemic-cardiomyopathy-modified-electrophysiological-function-of-heart
#7
Shu-Jie Wu, Yue-Chun Li, Zhe-Wei Shi, Zhong-Hao Lin, Zhi-Heng Rao, Si-Chao Tai, Mao-Ping Chu, Lei Li, Jia-Feng Lin
BACKGROUND: With chronic ischemia after myocardial infarction, the resulting scar tissue result in electrical and structural remodeling vulnerable to an arrhythmogenic substrate. The cholinergic anti-inflammatory pathway elicited by vagal nerve via α7 nicotinic acetylcholine receptors (α7-nAChR) can modulate local and systemic inflammatory responses. Here, we aimed to clarify a novel mechanism for the antiarrhythmogenic properties of vagal nerve during the ischemic cardiomyopathy (ICM)...
September 19, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28927896/niacin-and-heart-disease-prevention-engraving-its-tombstone-is-a-mistake
#8
REVIEW
Harold Robert Superko, Xue-Qiao Zhao, Howard N Hodis, John R Guyton
Niacin (nicotinic acid) has been used for primary and secondary coronary heart disease prevention for over 40 years. Until recently clinical trials incorporating niacin as part of an intervention strategy consistently demonstrated reduction in clinical events and lesion improvement, including ≥6% absolute mortality reduction. Two large clinical event trials in 2011 (Atherothrombosis Intervention in Metabolic Syndrome With Low HDL/High Triglycerides and Impact on Global Health Outcomes) and 2014 (Heart Protection Study 2-Treatment of HDL to Reduce the Incidence of Vascular Events) concluded that niacin added to statin therapy did not provide clinical event benefit over statin alone...
August 24, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28925882/why-are-antidepressant-drugs-effective-smoking-cessation-aids
#9
Mohammed Shoaib, Yazead Buhidma
Before the advent of varenicline, antidepressant drugs were reported to exhibit better clinical efficacy than nicotine replacement therapy as smoking cessation aids. The most studied is bupropion, a clinically-effective antidepressant, the first to be marketed throughout Europe for smoking cessation. The mechanisms behind bupropion's efficacy as a smoking cessation compound remains unclear. Since depression and tobacco smoking have a high incidence of co-occurrence, this would implicate an underlying link between these two conditions...
September 15, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28923721/evidence-of-sexual-dimorphism-of-htr1b-gene-on-major-adult-adhd-comorbidities
#10
Diana Müller, Eugenio H Grevet, Alana C Panzenhagen, Renata B Cupertino, Bruna S da Silva, Djenifer B Kappel, Nina R Mota, Paula Blaya-Rocha, Stefania P Teche, Eduardo S Vitola, Luis A Rohde, Verônica Contini, Diego L Rovaris, Jaqueline B Schuch, Claiton H D Bau
Attention-deficit/hyperactivity disorder (ADHD) is a very common psychiatric disorder across the life cycle and frequently presents comorbidities. Since ADHD is highly heritable, several studies have focused in the underlying genetic factors involved in its etiology. One of the major challenges in this search is the phenotypic heterogeneity, which could be partly attributable to the sexual dimorphism frequently seen in psychiatric disorders. Taking into account the well-known sexual dimorphic effect observed in serotonergic system characteristics, we differentially tested the influence of HTR1B SNPs (rs11568817, rs130058, rs6296 and rs13212041) on ADHD susceptibility and on its major comorbidities according to sex...
September 8, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28922651/evaluating-the-effect-of-smoking-cessation-treatment-on-a-complex-dynamical-system
#11
Korkut Bekiroglu, Michael A Russell, Constantino M Lagoa, Stephanie T Lanza, Megan E Piper
OBJECTIVE: To understand the dynamic relations among tobacco withdrawal symptoms to inform the development of effective smoking cessation treatments. Dynamical system models from control engineering are introduced and utilized to evaluate complex treatment effects. We demonstrate how dynamical models can be used to examine how distinct withdrawal-related processes are related over time and how treatment influences these relations. METHOD: Intensive longitudinal data from a randomized placebo-controlled smoking cessation trial (N=1504) are used to estimate a dynamical model of withdrawal-related processes including momentary craving, negative affect, quitting self-efficacy, and cessation fatigue for each of six treatment conditions (nicotine patch, nicotine lozenge, bupropion, patch + lozenge, bupropion + lozenge, and placebo)...
August 25, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28922641/structural-luminescence-thermodynamic-and-theoretical-studies-on-mononuclear-complexes-of-eu-iii-with-pyridine-monocarboxylate-n-oxides-in-aqueous-solution
#12
Rama Mohana Rao Dumpala, Neetika Rawat, Anil Boda, Sk Musharaf Ali, B S Tomar
The mononuclear complexes formed by Eu(III) with three isomeric pyridine monocarboxylate-N-oxides namely picolinic acid-N-oxide (PANO), nicotinic acid-N-oxide (NANO) and isonicotinic acid-N-oxide (IANO) in aqueous solutions were studied by potentiometry, luminescence spectroscopy and isothermal titration calorimetry (ITC) to determine the speciation, coordination, luminescence properties and thermodynamic parameters of the complexes formed during the course of the reaction. More stable six membered chelate complexes with stoichiometry (MLi, i=1-4) are formed by Eu(III) with PANO while non chelating ML and ML2 complexes are formed by NANO and IANO...
September 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28922590/efficacy-and-safety-of-the-%C3%AE-7-nicotinic-acetylcholine-receptor-agonist-abt-126-in-the-treatment-of-cognitive-impairment-associated-with-schizophrenia-results-from-a-phase-2b-randomized-controlled-study-in-smokers
#13
George M Haig, Deli Wang, Jun Zhao, Ahmed A Othman, Earle E Bain
OBJECTIVE: To evaluate the efficacy and safety of the α₇-nicotinic receptor agonist ABT-126 for treatment of cognitive impairment in stable subjects with schizophrenia who smoke. METHODS: A 12-week double-blind, placebo-controlled, parallel-group study was conducted from August 2012 to March 2014. Subjects with a diagnosis of schizophrenia based on DSM-IV-TR criteria (confirmed by the Mini-International Neuropsychiatric Interview version 6.0.0) were randomized 1:1:1 to ABT-126 25 mg, ABT-126 75 mg, or placebo once daily while maintained on their background antipsychotic medication...
September 12, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28922393/a-set-of-nutrient-limitations-trigger-yeast-cell-death-in-a-nitrogen-dependent-manner-during-wine-alcoholic-fermentation
#14
Camille Duc, Martine Pradal, Isabelle Sanchez, Jessica Noble, Catherine Tesnière, Bruno Blondin
Yeast cell death can occur during wine alcoholic fermentation. It is generally considered to result from ethanol stress that impacts membrane integrity. This cell death mainly occurs when grape musts processing reduces lipid availability, resulting in weaker membrane resistance to ethanol. However the mechanisms underlying cell death in these conditions remain unclear. We examined cell death occurrence considering yeast cells ability to elicit an appropriate response to a given nutrient limitation and thus survive starvation...
2017: PloS One
https://www.readbyqxmd.com/read/28921760/genome-wide-association-study-of-a-nicotine-metabolism-biomarker-in-african-american-smokers-impact-of-chromosome-19-genetic-influences
#15
Meghan J Chenoweth, Jennifer J Ware, Andy Z X Zhu, Christopher B Cole, Lisa Sanderson Cox, Nikki Nollen, Jasjit S Ahluwalia, Neal L Benowitz, Robert A Schnoll, Larry W Hawk, Paul M Cinciripini, Tony P George, Caryn Lerman, Joanne Knight, Rachel F Tyndale
BACKGROUND AND AIMS: The activity of CYP2A6, the major nicotine-inactivating enzyme, is measurable in smokers using the nicotine metabolite ratio (NMR; 3'hydroxycotinine/cotinine). Due to its role in nicotine clearance, the NMR is associated with smoking behaviours and response to pharmacotherapies. The NMR is highly heritable (~80%), and on average lower in African Americans (AA) versus Whites. We previously identified several reduce and loss-of-function CYP2A6 variants common in individuals of African descent...
September 16, 2017: Addiction
https://www.readbyqxmd.com/read/28920040/parasympathetic-cholinergic-and-neuropeptide-mechanisms-of-migraine
#16
REVIEW
Nikita Mikhailov, Oleg V Mamontov, Alexei A Kamshilin, Rashid Giniatullin
CONTEXT: Migraine mechanisms remain largely uncovered for various reasons including a very high complexity of the neurophysiological mechanisms implicated in this disorder and a plethora of endogenous biologically active compounds involved in the pathological process. The functional role of parasympathetic innervation of meninges and cholinergic mechanisms of migraine are among little explored issues despite multiple evidence indirectly indicating the role of acetylcholine (ACh) and its analogues in migraine and other types of headache...
February 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28919445/cognitive-effects-of-labeled-addictolytic-medications
#17
REVIEW
Camille Noélie Pujol, Cecilia Paasche, Vincent Laprevote, Benoit Trojak, Pierre Vidailhet, Elisabeth Bacon, Laurence Lalanne
INTRODUCTION: Alcohol, tobacco, and illegal drug usage is pervasive throughout the world, and abuse of these substances is a major contributor to the global disease burden. Many pharmacotherapies have been developed over the last 50years to target addictive disorders. While the efficacy of these pharmacotherapies is largely recognized, their cognitive impact is less known. However, all substance abuse disorders are known to promote cognitive disorders like executive dysfunction and memory impairment...
September 14, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28919072/assessment-of-nicotine-withdrawal-induced-changes-in-sucrose-preference-in-mice
#18
Y Alkhlaif, D Bagdas, A Jackson, A J Park, M I Damaj
Anhedonia, induced by nicotine withdrawal, may serve as an important affective sign that reinforces tobacco use and smoking relapse rates in humans. Animal models provide a way to investigate the underlying neurobiological factors involved in the decrease in responding for positive affective stimuli during nicotine withdrawal and may aid in drug development for nicotine dependence. Thus, we explored the use of the sucrose preference test to measure nicotine withdrawal-induced reduction in response for positive affective stimuli in mice...
September 15, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28918668/current-status-and-future-prospects-for-the-development-of-substance-abuse-vaccines
#19
Thomas R Kosten, Daryl Shorter, David Heekin
Substance use disorders (SUD) are a significant threat to both individual and public health. To date, SUD pharmacotherapy has focused primarily on agonist medications (i.e., nicotine replacement therapy for tobacco use disorder; methadone and buprenorphine for opioid use disorder), antagonist medications (i.e., naltrexone for opioid use disorder), and aversive therapy (i.e., disulfiram for alcohol use disorder). Pharmacotherapeutic approaches utilizing an immunological framework for medication development represent an important focus of study for treatment of these illnesses...
September 18, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28918457/effects-of-menthol-and-its-interaction-with-nicotine-conditioned-cue-on-nicotine-seeking-behavior-in-rats
#20
Erin Harrison, Lisa Biswas, Ramachandram Avusula, Meiyu Zhang, Yongzhen Gong, Xiu Liu
RATIONALE: Increasing clinical evidence suggests that menthol, a significant flavoring additive in tobacco products, may contribute to smoking and nicotine dependence. Relapse to smoking behavior presents a formidable challenge for the treatment of tobacco addiction. An unresolved issue is whether the mentholation of tobacco products precipitates relapse to tobacco use in abstinent smokers. OBJECTIVES: The present study examined the effects of menthol on the perseverance and relapse of nicotine-seeking behavior in rats...
September 16, 2017: Psychopharmacology
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