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https://www.readbyqxmd.com/read/29051105/nicotine-and-autoimmunity-the-lotus-flower-in-tobacco
#1
REVIEW
João Pedro Gomes, Abdulla Watad, Yehuda Shoenfeld
Nicotine, the major component of cigarettes, has demonstrated conflicting impact on the immune system: some authors suggest that increases pro-inflammatory cytokines and provokes cellular apoptosis of neutrophils, releasing intracellular components that act as auto-antigens; others claimed that nicotine has a protective and anti-inflammatory effects, especially by binding to α7 subunit of nicotinic acetylcholine receptors. The cholinergic pathway contributes to an anti-inflammatory environment characterized by increasing T regulatory cells response, down-regulating of pro-inflammatory cytokines and a pro-inflammatory cells apoptosis...
October 16, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29049971/food-addiction-prevalence-psychopathological-correlates-and-associations-with-quality-of-life-in-a-large-sample
#2
Paulo R Nunes-Neto, Cristiano A Köhler, Felipe B Schuch, Marco Solmi, João Quevedo, Michael Maes, Andrea Murru, Eduard Vieta, Roger S McIntyre, Susan L McElroy, Ashley N Gearhardt, Brendon Stubbs, André F Carvalho
OBJECTIVE: To determine the prevalence of food addiction in a large Brazilian non-clinical sample. Sociodemographic and psychopathological correlates of food addiction as well as associations with quality (QoL) domains were also investigated. METHODS: This cross-sectional study obtained data from a Brazilian anonymous web-based research platform (N = 7639; 71.3% females). Participants provided sociodemographic data and completed the modified Yale Food Addiction Scale 2...
October 12, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29048454/are-the-school-prevention-programmes-aimed-at-de-normalizing-smoking-among-youths-beneficial-in-the-long-term-an-example-from-the-smoke-free-class-competition-in-italy
#3
V Zagà, F Giordano, P Gremigni, D L Amram, A De Blasi, M Amendola, J F Osborn, M S Cattaruzza
Tobacco smoking by young people is of great concern because it usually leads to regular smoking, nicotine addiction and quitting difficulties. Young people "hooked" by tobacco maintain the profits of the tobacco industry by replacing smokers who quit or die. If new generations could be tobacco-free, as supported by tobacco endgame strategies, the tobacco epidemic could end within decades. Smoking prevention programmes for teens are offered by schools with the aim to prevent or delay smoking onset. Among these, the Smoke Free Class Competition (SFC) was widely implemented in Europe...
November 2017: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/29046158/e-cigarettes-impact-of-e-liquid-components-and-device-characteristics-on-nicotine-exposure
#4
Elise E DeVito, Suchitra Krishnan-Sarin
Electronic cigarettes (e-cigarettes) use has increased substantially in recent years. While e-cigarettes have been proposed as a potentially effective smoking cessation tool, dual-use in smokers is common and e-cigarettes are widely used by non-smokers, including youth and young-adult non-smokers. Nicotine, the primary addictive component in cigarettes, is present at varying levels in many e-liquids. E-cigarettes may lead to initiation of nicotine use in adult and youth non-smokers, re-initiation of nicotine dependence in ex-smokers or increased severity of nicotine dependence in dual-users of cigarettes and e-cigarettes...
October 16, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/29042244/selectivity-of-coronaridine-congeners-at-nicotinic-acetylcholine-receptors-and-inhibitory-activity-on-mouse-medial-habenula
#5
Hugo R Arias, Xiaotao Jin, Dominik Feuerbach, Ryan M Drenan
The inhibitory activity of coronaridine congeners on human (h) α4β2 and α7 nicotinic acetylcholine receptors (AChRs) is determined by Ca(2+) influx assays, whereas their effects on neurons in the ventral inferior (VI) aspect of the mouse medial habenula (MHb) are determined by patch-clamp recordings. The Ca(2+) influx results clearly establish that coronaridine congeners inhibit hα3β4 AChRs with higher selectivity compared to hα4β2 and hα7 subtypes, and with the following potency sequence, for hα4β2: (±)-18-methoxycoronaridine [(±)-18-MC]>(+)-catharanthine>(±)-18-methylaminocoronaridine [(±)-18-MAC] ∼ (±)-18-hydroxycoronaridine [(±)-18-HC]; and for hα7: (+)-catharanthine>(±)-18-MC>(±)-18-HC>(±)-18-MAC...
October 14, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29040827/effects-of-lorcaserin-belviq-%C3%A2-on-nicotine-and-food-maintained-responding-in-non-human-primates
#6
David S Jacobs, Claire E Barkin, Michelle R Kohut, Jack Bergman, Stephen J Kohut
BACKGROUND: Accumulating evidence suggests that the FDA-approved serotonin 5-HT2C receptor agonist, lorcaserin (Belviq(®)), may be a promising candidate for the management of substance use disorders, including nicotine addiction. The present study was conducted to determine the efficacy and selectivity of acute or continuous lorcaserin treatment for decreasing the reinforcing effects of nicotine in a primate species. METHODS: Adult rhesus monkeys (n=4) with a history of nicotine self-administration (>2years) responded for injections of nicotine (0...
October 10, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29039152/evaluation-of-the-neuropathic-pain-in-the-smokers
#7
Sercan Bulut Çelik, Hüseyin Can, Melih Kaan Sözmen, Tijen Şengezer, Yusuf Cem Kaplan, Gökçenur Utlu, Alp Şener, Arzu Aybek Yılmaz, Olgu Aygün
OBJECTIVES: Nicotine addiction is one of the most important causes of the general failure of treatment and keeping the habit of smoking. Peripheral neuropathy is a leading factor of smoking. This study aimed to analyze the association of neuropathic pain and addiction levels of individuals. METHODS: The study was performed on the day on which the smokers visited the hospital for any reason. The Douleur Neuropathique 4 (DN-4) Scale and Fagerström Addiction Survey were administered to the individuals after obtaining their consent...
July 2017: Aǧrı: Ağrı (Algoloji) Derneği'nin Yayın Organıdır, the Journal of the Turkish Society of Algology
https://www.readbyqxmd.com/read/29038792/neuroanatomical-relationships-between-orexin-hypocretin-containing-neurons-nerve-fibers-and-nicotine-induced-c-fos-activated-cells-of-the-reward-addiction-neurocircuitry
#8
Ozra Dehkordi, Jed E Rose, Martha I Dávila-García, Richard M Millis, Samar Ali Mirzaei, Kebreten F Manaye, Annapurni Jayam-Trouth
Orexin/hypocretin-containing neurons in lateral hypothalamus (LH) are implicated in the neurobiology of nicotine addiction. However, the neuroanatomical relationships between orexin-neurons/nerve fibers and nicotine-activated cells within the reward-addiction neurocircuitry is not known. In the present study in mice, we first used c-Fos immunohistochemistry to identify CNS cells stimulated by an acute single injection of nicotine (NIC, 2 mg/kg, IP). Sequential double-labelling was then performed to identify the location of orexin-containing neurons and nerve fibers with respect to NIC-induced c-Fos activated cells and/or tyrosine hydroxylase (TH) immunoreactive (IR) cells of the mesocorticolimbic reward-addiction pathways...
August 2017: Journal of Alcoholism and Drug Dependence
https://www.readbyqxmd.com/read/29037662/effects-of-pharmacological-manipulation-of-the-kappa-opioid-receptors-on-the-aversive-effects-of-nicotine
#9
Melissa Ward, Haval Norman, Manoranjan S D'Souza
Nicotine, an addictive component of tobacco smoke, produces both rewarding and aversive effects. Increasing the aversive effects of nicotine may help in promoting smoking cessation. However, neural targets mediating the aversive effects of nicotine have not been fully identified. In this study, we evaluated the role of kappa opioid receptors (KORs) in the aversive effects of nicotine (0.4 mg/kg, base; s.c.) using the nicotine-induced conditioned taste aversion (CTA) model in Wistar rats. The KORs were activated using the selective KOR agonist (±)U-50,488H (0, 0...
October 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29023906/influence-of-risk-perception-on-attitudes-and-norms-regarding-electronic-cigarettes
#10
Craig W Trumbo
The use of electronic cigarettes has grown substantially over the last few years. Currently, about 4% of adults use electronic cigarettes, about 16% of high school students report use in the past 30 days, as do approximately 11-25% of college students. A hallmark of the reduction in tobacco use has been the shift in social norms concerning smoking in public. Such norms may also drive views on acceptability of public electronic cigarette use. While normative factors have been given attention, little substantive application of the literature on risk perception has been brought to bear...
October 11, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/29020601/pioglitazone-a-ppar%C3%AE-agonist-reduces-nicotine-craving-in-humans-with-marginal-effects-on-abuse-potential
#11
Jermaine D Jones, Sandra D Comer, Verena E Metz, Jeanne M Manubay, Shanthi Mogali, Roberto Ciccocioppo, Suky Martinez, Mudassir Mumtaz, Adam Bisaga
Possibly through their actions upon glia, peroxisome proliferator-activated receptor agonists (PPAR) have been shown to alter the abuse potential of addictive drugs in several preclinical models. The current study extends this research into the human laboratory as the first clinical study into the effects of the PPAR gamma agonist, pioglitazone, on the abuse potential of nicotine. Heavy smokers were recruited for this 3-week study. Upon admission, participants were randomized to either active (45mg, n=14) or placebo (0mg, n=13) PIO maintenance conditions for the duration of the study...
October 8, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28986279/progressive-modulation-of-accumbal-neurotransmission-and-anxiety-like-behavior-following-protracted-nicotine-withdrawal
#12
Julia Morud, Joakim Strandberg, Anna Andrén, Mia Ericson, Bo Söderpalm, Louise Adermark
Due to the highly addictive properties of nicotine, a low percentage of users successfully maintain cessation for longer periods of time. This might be linked to neuroadaptations elicited by the drug, and understanding progressive changes in neuronal function might provide critical insight into nicotine addiction. We have previously shown that neurotransmission in the nucleus accumbens (nAc), a key brain region with respect to drug reinforcement and relapse, is suppressed for as long as seven months after a brief period of nicotine treatment...
October 3, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28981306/unpacking-smokers-beliefs-about-addiction-and-nicotine-a-qualitative-study
#13
Sarah E Johnson, Blair Coleman, Greta K Tessman, Denise M Dickinson
Evidence suggests that consumers correctly identify nicotine as addictive; however, many may also harbor misconceptions about its harmfulness. The majority of this evidence is based on survey data, however, which may be prone to some limitations. In the current study, we employed qualitative methods to examine, in their own words, smokers' beliefs about nicotine and addiction. Twelve 1-hr focus groups were conducted in 3 cities in the United States (Columbus, OH; New Orleans, LA; and Washington, DC) from October to November, 2014...
October 5, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28977763/convergent-neuronal-plasticity-and-metaplasticity-mechanisms-of-stress-nicotine-and-alcohol
#14
Alexey Ostroumov, John A Dani
Stress and tobacco smoking are risk factors for alcoholism, but the underlying neural mechanisms are not well understood. Although stress, nicotine, and alcohol have broad, individual effects in the brain, some of their actions converge onto the same mechanisms and circuits. Stress and nicotine augment alcohol-related behaviors, in part via modulation of alcohol-evoked neuronal plasticity and metaplasticity mechanisms. Stress modulates alcoholevoked plasticity via the release of signaling molecules that influence synaptic transmission...
October 4, 2017: Annual Review of Pharmacology and Toxicology
https://www.readbyqxmd.com/read/28961314/key-issues-surrounding-the-health-impacts-of-electronic-nicotine-delivery-systems-ends-and-other-sources-of-nicotine
#15
REVIEW
Jeffrey Drope, Zachary Cahn, Rosemary Kennedy, Alex C Liber, Michal Stoklosa, Rosemarie Henson, Clifford E Douglas, Jacqui Drope
Answer questions and earn CME/CNE Over the last decade, the use of electronic nicotine delivery systems (ENDS), including the electronic cigarette or e-cigarette, has grown rapidly. More youth now use ENDS than any tobacco product. This extensive research review shows that there are scientifically sound, sometimes competing arguments about ENDS that are not immediately and/or completely resolvable. However, the preponderance of the scientific evidence to date suggests that current-generation ENDS products are demonstrably less harmful than combustible tobacco products such as conventional cigarettes in several key ways, including by generating far lower levels of carcinogens and other toxic compounds than combustible products or those that contain tobacco...
September 29, 2017: CA: a Cancer Journal for Clinicians
https://www.readbyqxmd.com/read/28958601/ghrelin-receptor-antagonism-of-morphine-induced-conditioned-place-preference-and-behavioral-and-accumbens-dopaminergic-sensitization-in-rats
#16
Pavel Jerabek, Tereza Havlickova, Nina Puskina, Chrysostomos Charalambous, Marek Lapka, Petr Kacer, Magdalena Sustkova-Fiserova
An increasing number of studies over the past few years have demonstrated ghrelin's role in alcohol, cocaine and nicotine abuse. However, the role of ghrelin in opioid effects has rarely been examined. Recently we substantiated in rats that ghrelin growth hormone secretagogue receptors (GHS-R1A) appear to be involved in acute opioid-induced changes in the mesolimbic dopaminergic system associated with the reward processing. The aim of the present study was to ascertain whether a ghrelin antagonist (JMV2959) was able to inhibit morphine-induced biased conditioned place preference and challenge-morphine-induced accumbens dopaminergic sensitization and behavioral sensitization in adult male rats...
September 27, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28948816/the-influence-of-smoking-and-cessation-on-the-human-reproductive-hormonal-balance
#17
H Jandíková, M Dušková, L Stárka
Smoking is the most widespread substance dependence in the world. Nicotine and some other components of the cigarette smoke cause various endocrine imbalances, and have negative effects on pituitary, thyroid, adrenal, testicular and ovarian functions. Here, we examined studies that describe the influence of smoking and smoking cessation on the male and female reproductive systems. We also focused on studies providing an account of differences in cessation success rates between men and women. In men, the most common effects associated with smoking are erectile dysfunction and decreasing spermiogram quality...
September 26, 2017: Physiological Research
https://www.readbyqxmd.com/read/28947995/significantly-more-intense-pain-in-methadone-maintained-patients-who-are-addicted-to-nicotine
#18
Lian-Zhong Liu, Lin-Xiang Tan, Yan-Min Xu, Xue-Bing Liu, Wen-Cai Chen, Jun-Hong Zhu, Jin Lu, Bao-Liang Zhong
Pain and cigarette smoking are very common in heroin-dependent patients (HDPs) receiving methadone maintenance treatment (MMT) and both have substantial negative effects on HDPs' physical and mental health. Nevertheless, very few studies have assessed the relationship between the two in HDPs. This study examined the association between pain intensity and smoking in Chinese methadone-maintained HDPs. A total of 603 HDPs were consecutively recruited from three MMT clinics in Wuhan, China, and administered with a socio-demographic and drug use questionnaire, a smoking questionnaire concerning average number of cigarettes smoked daily and Heaviness of Smoking Index, and Zung's Self-rating Depression Scale...
September 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28944090/rapid-identification-of-buprenorphine-in-patient-saliva
#19
Stuart Farquharson, Kathryn Dana, Chetan Shende, Zachary Gladding, Jenelle Newcomb, Jessica Dascher, Ismene L Petrakis, Albert J Arias
Buprenorphine is becoming the medication of choice to help patients withdraw from opioid addiction. However, treatment is compromised by the inability of physicians to assess patient usage during scheduled examinations. Here we describe the development of a point-of-care (POC) analyzer that can rapidly measure both illicit and treatment drugs in patient saliva, ideally in the physician's office, and with a degree of accuracy similar to chromatography. The analyzer employs a relatively simple supported liquid extraction to isolate the drugs from the saliva and surface-enhanced Raman spectroscopy (SERS) to detect the drugs...
June 2017: Journal of Analytical & Bioanalytical Techniques
https://www.readbyqxmd.com/read/28943284/evaluating-oral-flavorant-effects-on-nicotine-self-administration-behavior-and-phasic-dopamine-signaling
#20
Robert J Wickham, Eric J Nunes, Shannon Hughley, Phillip Silva, Sofia N Walton, Jinwoo Park, Nii A Addy
Understanding how tobacco product flavor additives, such as flavorants in electronic cigarettes, influence smoking behavior and addiction is critical for informing public health policy decisions regarding tobacco product regulation. Here, we developed a combined intraoral (i.o.) and intravenous (i.v.) self-administration paradigm in rats to determine how flavorants influence self-administration behavior. By combining i.o. flavorant delivery with fast scan cyclic voltammetry (FSCV) or i.v. nicotine self-administration in adult, male rats, we examined whether flavors alter phasic dopamine (DA) signaling and nicotine self-administration...
September 21, 2017: Neuropharmacology
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