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Nicotine dependence

Indranil Saha, Kamirul Islam, Bobby Paul, Tapas Kumar Som
Background: Tobacco kills half of its users, with smoking and smokeless tobacco killing nearly 6 million people worldwide - one death every 6 s in each year. Use of tobacco over time causes a physical and psychological addiction due to the presence of nicotine. To find out the level of nicotine dependence among adult (18 years and above) tobacco users and the factors responsible for it. Materials and Methods: A cross-sectional community-based study was conducted among 128 current tobacco users in an urban slum of Burdwan District, West Bengal, India...
October 2017: Journal of Family Medicine and Primary Care
Andrine M Lemieux, Motohiro Nakajima, Riyadh Saif-Ali, Molham Al-Habori, Anisa Dokam, Mustafa al'Absi
INTRODUCTION: Glucocorticoid activity is disrupted in substance users including khat chewers who also use tobacco. Anger, dysphoria, and anxiety can mediate this relationship. The aim of this study was to contrast emotion dysregulation and substance use variables as predictors of post-stress cortisol output. MATERIALS AND METHODS: Comparable numbers of males (n = 90) and females (n = 85) including controls, khat only, and concurrent khat and tobacco users participated in a stress study...
March 2, 2018: Addictive Behaviors
Katherine A McDermott, Keanan J Joyner, Jahn K Hakes, Sarah A Okey, Jesse R Cougle
BACKGROUND: Pain interference is associated with substance use, but has yet to be considered as a potential indicator of SUDs among substance users. We sought to examine whether moderate and high pain interference would confer risk for SUDs in ever and weekly users. METHODS: Using data from the National Epidemiologic Survey on Alcohol and Related Conditions, logistic regression analyses were conducted to examine the association between pain interference and concurrent and prospective alcohol and nicotine dependence, as well as concurrent cannabis use disorder...
March 7, 2018: Drug and Alcohol Dependence
Ying Hu, Zhonghai Fang, Yichen Yang, Ting Fan, Ju Wang
Nicotine dependence is the primary addictive stage of cigarette smoking. Although a lot of studies have been performed to explore the molecular mechanism underlying nicotine dependence, our understanding on this disorder is still far from complete. Over the past decades, an increasing number of candidate genes involved in nicotine dependence have been identified by different technical approaches, including the genetic association analysis. In this study, we performed a comprehensive collection of candidate genes reported to be genetically associated with nicotine dependence...
March 16, 2018: Journal of Biomolecular Structure & Dynamics
Verena M Throm, David Männle, Thomas Giese, Andrea S Bauer, Matthias M Gaida, Juergen Kopitz, Thomas Bruckner, Konstanze Plaschke, Svetlana P Grekova, Klaus Felix, Thilo Hackert, Nathalia A Giese, Oliver Strobel
Smoking is associated with increased risk and poorer prognosis of pancreatic ductal adenocarcinoma (PDAC). Nicotine acts through cholinergic nicotinic receptors, preferentially α7 (CHRNA7) that also binds the endogenous ligand SLURP1 (Secreted Ly-6/uPAR-Related Protein 1). The clinical significance of SLURP1 and its interaction with nicotine in PDAC are unclear. We detected similar levels of SLURP1 in sera from healthy donors and patients with chronic pancreatitis or PDAC; higher preoperative values were associated with significantly better survival in patients with resected tumors...
February 20, 2018: Oncotarget
Israel Agaku, Satomi Odani, Constantine Vardavas, Linda Neff
BACKGROUND: We investigated tobacco-related self-identity and risk perceptions among adolescent tobacco users. METHODS: Data were analyzed for 20 675 US sixth- to 12th-graders from the 2016 National Youth Tobacco Survey. Students who reported past-30-day use of a specific tobacco product or ≥2 products but denied having used "any tobacco product" in the past 30 days were classified as not self-identifying as tobacco users. Tobacco product harm perceptions were further assessed across products...
March 15, 2018: Pediatrics
Neil Walker, Yaling Yang, Vasiliki Kiparoglou, Subhash Pokhrel, Hayley Robinson, Hugo van Woerden
BACKGROUND: Smoking cessation services provide support to smokers who desire to quit. Published studies to date have looked at the cost and benefit of service provision but typically focus on clinical trial data. Using routinely collected observational data, this study examined the costs involved in providing a service in terms of average health care expenditure per successful quit attempt in addition to population - level cost-effectiveness measures. METHODS: Data were analysed from Quit-51 smoking cessation service across five English regions between March 2013 and March 2016 (n = 9116)...
March 15, 2018: BMC Health Services Research
Samane Zare, Mehdi Nemati, Yuqing Zheng
OBJECTIVE: Systematic review of research examining consumer preference for the main electronic cigarette (e-cigarette) attributes namely flavor, nicotine strength, and type. METHOD: A systematic search of peer-reviewed articles resulted in a pool of 12,933 articles. We included only articles that meet all the selection criteria: (1) peer-reviewed, (2) written in English, and (3) addressed consumer preference for one or more of the e-cigarette attributes including flavor, strength, and type...
2018: PloS One
Rosalie C F Burdon, Robert R Junker, Douglas G Scofield, Amy L Parachnowitsch
Bacteria on floral tissue can have negative effects by consuming resources and affecting nectar quality, which subsequently could reduce pollinator visitation and plant fitness. Plants however can employ chemical defences to reduce bacteria density. In North American, bee-pollinated Penstemon digitalis , the nectar volatile S -(+)-linalool can influence plant fitness, and terpenes such as linalool are known for their antimicrobial properties suggesting that it may also play a role in plant-microbe interactions...
2018: Chemoecology
John T Mitchell, Andrea L Howard, Katherine A Belendiuk, Traci M Kennedy, Annamarie Stehli, James M Swanson, Lily Hechtman, L Eugene Arnold, Betsy Hoza, Benedetto Vitiello, Bo Lu, Scott H Kollins, Brooke S G Molina
Introduction: Children with attention-deficit/hyperactivity disorder (ADHD) are at increased risk for smoking cigarettes, but there is little longitudinal research on the array of smoking characteristics known to be prognostic of long-term smoking outcomes into adulthood. These variables were studied into early adulthood in a multi-site sample diagnosed with ADHD combined-type at ages 7-9.9 and followed prospectively alongside an age- and sex-matched local normative comparison group (LNCG)...
March 12, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
Jenni Hällfors, Teemu Palviainen, Ida Surakka, Richa Gupta, Jadwiga Buchwald, Anu Raevuori, Samuli Ripatti, Tellervo Korhonen, Pekka Jousilahti, Pamela A F Madden, Jaakko Kaprio, Anu Loukola
The heritability of nicotine dependence based on family studies is substantial. Nevertheless, knowledge of the underlying genetic architecture remains meager. Our aim was to identify novel genetic variants responsible for interindividual differences in smoking behavior. We performed a genome-wide association study on 1715 ever smokers ascertained from the population-based Finnish Twin Cohort enriched for heavy smoking. Data imputation used the 1000 Genomes Phase I reference panel together with a whole genome sequence-based Finnish reference panel...
March 13, 2018: Addiction Biology
John R Fedota, Xiaoyu Ding, Allison L Matous, Betty Jo Salmeron, Michael R McKenna, Hong Gu, Thomas J Ross, Elliot A Stein
BACKGROUND: Insular subdivisions show distinct patterns of resting-state functional connectivity (rsFC) with specific brain regions, each with different functional significance. Seeds in these subdivisions are employed to characterize the effects of acute nicotine abstinence on rsFC between insula subdivisions and brain networks implicated in addiction and attentional control. METHODS: In a within-subjects design, resting-state blood oxygen level-dependent data were collected from treatment-seeking smokers (N= 20) following smoking satiety and again following 48 hours of nicotine abstinence...
February 2018: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
Eun Mi Chun
Quitting smoking helps smokers maintain their health and extend their lifespan by 10 or more years. Treatment strategies for smoking cessation should be tailored to individual smokers with special needs based on their specific circumstances. It is recommended that pregnant women adopt smoking cessation through counseling and behavioral interventions because the safety of medications has yet to be established. Counseling is the main strategy for smoking cessation in adolescents and nicotine replacement therapy can be used with caution in individuals with serious nicotine dependence...
March 7, 2018: Tuberculosis and Respiratory Diseases
Yasmin Mashhoon, Jennifer Betts, Stacey L Farmer, Scott E Lukas
Adolescence is a period during which a number of critical neuromaturation processes occur and the vulnerability for developing nicotine dependence is extremely high. Thus, early-onset (EO; age < 16 years old), relative to late-onset (LO; age ≥ 16 years old), tobacco smoking may be uniquely deleterious for developmentally immature systems that regulate neural signaling reactivity. This study investigated how age of tobacco smoking onset affects neurophysiological measures of smoking cue reactivity and reported craving in adult smokers...
March 7, 2018: Brain Research
Dean F Wong, Hiroto Kuwabara, Andrew G Horti, Joshua M Roberts, Ayon Nandi, Nicola Casella, James Brasic, Elise M Weerts, Kelly Kitzmiller, Jenny A Phan, Lorena Gapasin, Akira Sawa, Heather Valentine, Gary Wand, Noble George, Michael McDonald, William Kem, Robert Freedman, Albert Gjedde
Background: The α7 nicotinic acetylcholine receptor (nAChR) increasingly has been implicated in normal brain physiology, as well as in neuropsychiatric disorders. The highly cortical distribution of α7-nAChR suggests a role in cognition. Methods: We expanded the first-in-human PET imaging of α7-nAChR with [18F]ASEM from five to 21 healthy non-smoking volunteers and added a feasibility study in six male patients with schizophrenia. Study aims included 1) confirmation of test-retest reproducibility of [18F]ASEM binding, 2) demonstration of specificity by competition with DMXB-A, an α7-nAChR partial agonist, 3) estimation of [18F]ASEM binding potentials and α7-nAChR density in vivo in humans, and 4) demonstrating the feasibility of studying α7-nAChR as a target for schizophrenia...
March 7, 2018: International Journal of Neuropsychopharmacology
Marie-Pierre Sylvestre, Miguel Chagnon, Robert J Wellman, Erika N Dugas, Jennifer O'Loughlin
No abstract text is available yet for this article.
March 7, 2018: American Journal of Epidemiology
Eric D Claus, Benjamin C Moeller, Darlene Harbour, Philip J Kuehl, Michael McGuire, Juan C Vivar, Megan J Schroeder
Objectives: To examine factors important to cigar smoking and subsequent nicotine exposure, we evaluated the impact of cigar type, cigarette smoking history, and inhalation behaviors on nicotine dependence, smoking topography, and biomarkers of exposure in current exclusive cigar smokers. Methods: Adult, exclusive cigar smokers (N = 77) were recruited based on cigar type, cigarette smoking history, and self-reported inhalation behaviors. Participants smoked their own brand product ad libitum for up to one hour; dependence symptoms, smoking topography, and biomarkers of exposure were assessed...
January 2018: Tobacco Regulatory Science
Yuan-Hao Chen, Tung-Tai Kuo, Eagle Yi-Kung Huang, Yu-Ching Chou, Yung-Hsiao Chiang, Barry J Hoffer, Jonathon Miller
Background: Traumatic brain injury is associated with substantial alterations in reward processing, but underlying mechanisms are controversial. Objective: A better understanding of alterations in dopamine (DA) release patterns from the dorsal striatum and nucleus accumbens shell (NAc) may provide insights into posttraumatic reward pathology. Materials and Methods: The patterns of DA release with or without exposure to nicotine in brain slices with striatum and NAc, isolated from Sprague-Dawley rats with 6 psi fluid percussion (FPI) or sham injury were analysis by using fast-scan cyclic voltammetry...
February 9, 2018: Oncotarget
Edward F Domino, Mika Hirasawa-Fujita
Introduction: The effects of smoking denicotinized (denic) and average nicotine (avnic) tobacco cigarettes were studied on brain mu opioid receptor binding by positron emission tomography with 11C carfentanil. The results indicated the importance of physiological and psychological effects induced by denic smoking. Methods: Regional mu opioid binding potential (non-displaceable binding potential, BPND) was measured in 20 adult male overnight abstinent chronic tobacco smokers...
March 5, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
Kenneth A Perkins, Joshua L Karelitz, Margaret C Boldry
Introduction: Confirming preclinical findings, nicotine in humans (via smoking) enhances reinforcement from non-drug rewards. Recent demonstration of similar effects with nicotine via e-cigarettes suggests they may also occur when using nicotine replacement therapies (NRT). Methods: Effects of nicotine via NRT patch or nasal spray were assessed on responding reinforced by music, video, or monetary rewards, or for no reward (control). Non-treatment seeking smokers (N=31) participated in three virtually identical experimental sessions, each following overnight abstinence (CO≤10 ppm)...
March 3, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
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