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Coleman SR, Higgins ST, Smyth JM, Rodriguez BL, Loganathan M, Gaalema DE. Extending contingency management for smoking cessation to patients with or at risk for cardiovascular disease: A preliminary trial of a home-based intervention. Exp Clin Psychopharmacol 2024; 32:270-276. [PMID: 37602999 PMCID: PMC10879453 DOI: 10.1037/pha0000677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Cigarette smoking puts individuals with or at risk for developing cardiovascular disease (CVD) in jeopardy of experiencing a major cardiovascular event. Contingency management (CM) for smoking cessation is an intervention wherein financial incentives are provided contingent on biochemically verified smoking abstinence. Conventional CM programs typically require frequent clinic visits for abstinence monitoring, a potential obstacle for patients with medical comorbidities who may face barriers to access. This preliminary study examined the feasibility and comparative efficacy of (a) usual care (UC; advice to quit smoking, self-help materials, quitline referral) versus (b) UC plus home-based CM for smoking cessation (UC + HBCM). HBCM entailed earning monetary-based vouchers contingent on self-reported 24-hr smoking abstinence biochemically verified by a breath carbon monoxide (CO) sample ≤ 6 ppm. Participants were 20 outpatients with a CVD diagnosis or qualifying CVD risk factor randomly assigned 1:1 to the two conditions. Intervention participants received 14 in-home abstinence visits over 6 weeks. Voucher monetary value started at $10 and escalated by $2.50 for each subsequent negative sample (maximum earnings: $367.50). Positive samples earned no vouchers and reset voucher value to $10, but two negative samples following a positive allowed participants to continue earning vouchers at the prereset value. Primary outcome was point-prevalence smoking abstinence at Week 6 assessment. More participants assigned to UC + HBCM than UC were smoking abstinent at that Week 6 assessment (90% vs. 30%), χ²(1, N = 20) = 7.5, p < .01. These results provide initial evidence that HBCM can effectively promote smoking abstinence in CVD outpatients. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
- Sulamunn R.M. Coleman
- Vermont Center on Behavior and Health, University of Vermont
- Departments of Psychiatry, University of Vermont
- Psychological Science, University of Vermont
| | - Stephen T. Higgins
- Vermont Center on Behavior and Health, University of Vermont
- Departments of Psychiatry, University of Vermont
- Psychological Science, University of Vermont
| | - Joshua M. Smyth
- The Pennsylvania State University, Department of Biobehavioral Health, University of Vermont
| | | | | | - Diann E. Gaalema
- Vermont Center on Behavior and Health, University of Vermont
- Departments of Psychiatry, University of Vermont
- Psychological Science, University of Vermont
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Salloum RG, Bricker JB, Lee JH, Theis RP, Pluta K, Williams MP, Naous J, Mulani SR, Cogle CR, Rubin DA, Fahnlander AM, Nordelo B, Sullivan BM, Bloodworth S, Corbin L, Siler K, Willis D, Carrasquillo O, Dallery J. Comparative effectiveness of mobile health smoking cessation approaches among underserved patients in primary care: Study protocol for the PROMOTE-UP trial. Contemp Clin Trials 2023; 127:107120. [PMID: 36804046 DOI: 10.1016/j.cct.2023.107120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023]
Abstract
INTRODUCTION Tobacco smoking is the leading cause of preventable disease, disability, and premature death in the United States. Recent advances have led to two efficacious mobile health (mHealth) treatments for smoking cessation: iCanQuit, an Acceptance and Commitment Therapy-based behavioral treatment promoting cessation through accepting triggers and committing to values; and Motiv8, a contingency management intervention promoting smoking cessation with financial incentives via biochemically verified abstinence. This study will evaluate the comparative effectiveness of the Florida Quitline, iCanQuit alone, and iCanQuit+Motiv8 in a pragmatic trial among patients who smoke in underserved primary care settings. METHODS The study will be an individually-randomized controlled trial with three arms (Florida Quitline, iCanQuit alone, iCanQuit+Motiv8 combined) conducted in multiple primary care practices affiliated with the OneFlorida+ Clinical Research Consortium. Adult patients who smoke will be randomized to one of the 3 study arms (n = 444/arm), stratified by healthcare setting (academic vs. community). The primary outcome will be 7-day point prevalence smoking abstinence at 6 months post-randomization. Secondary outcomes will be 12-month smoking abstinence, patient satisfaction with the interventions, and changes in patient quality of life and self-efficacy. The study will also assess how and for whom the interventions help sub-group patients in achieving smoking abstinence by measuring theory-derived factors that mediate smoking outcome-specific baseline moderators. CONCLUSIONS Results from this study will provide evidence for the comparative effectiveness of mHealth smoking cessation interventions in healthcare settings. Use of mHealth interventions can make smoking cessation resources more equitably accessible and have far-reaching impact on community and population health. TRIAL REGISTRATION ClinicalTrials.gov, NCT05415761, Registered 13 June 2022.
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Affiliation(s)
- Ramzi G Salloum
- Department of Health Outcomes and Biomedical Informatics, University of Florida College of Medicine, Gainesville, FL, USA; University of Florida Health Cancer Center, Gainesville, FL, USA
| | - Jonathan B Bricker
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Ji-Hyun Lee
- University of Florida Health Cancer Center, Gainesville, FL, USA; Department of Biostatistics, College of Medicine and College of Public Health and Health Professions, Gainesville, FL, USA
| | - Ryan P Theis
- Department of Health Outcomes and Biomedical Informatics, University of Florida College of Medicine, Gainesville, FL, USA
| | - Kathryn Pluta
- Department of Health Outcomes and Biomedical Informatics, University of Florida College of Medicine, Gainesville, FL, USA; University of Florida Health Cancer Center, Gainesville, FL, USA
| | - Maribeth P Williams
- Department of Community Health and Family Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Jihane Naous
- Department of Community Health and Family Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Shaunak R Mulani
- Department of Community Health and Family Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Christopher R Cogle
- Division of Hematology/Oncology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Daniel A Rubin
- Department of Community Health and Family Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Alexandra M Fahnlander
- Department of Health Outcomes and Biomedical Informatics, University of Florida College of Medicine, Gainesville, FL, USA
| | - Brianna Nordelo
- Department of Health Outcomes and Biomedical Informatics, University of Florida College of Medicine, Gainesville, FL, USA
| | - Brie M Sullivan
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | - Laura Corbin
- Bureau of Tobacco Free Florida, Florida Department of Health, Tallahassee, FL, USA
| | - Kendra Siler
- CommunityHealth IT, Kennedy Space Center, FL, USA
| | - David Willis
- CommunityHealth IT, Kennedy Space Center, FL, USA
| | - Olveen Carrasquillo
- Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Jesse Dallery
- Department of Psychology, University of Florida, Gainesville, FL, USA.
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Nollen NL, Cox LS, Mayo MS, Ellerbeck EF, Arnold MJ, Salzman G, Shanks D, Woodward J, Greiner KA, Ahluwalia JS. Protocol from a randomized clinical trial of multiple pharmacotherapy adaptations based on treatment response in African Americans who smoke. Contemp Clin Trials Commun 2022; 30:101032. [DOI: 10.1016/j.conctc.2022.101032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 10/04/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
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Ray LA, Green R, Enders C, Leventhal AM, Grodin EN, Li G, Lim A, Hartwell E, Venegas A, Meredith L, Nieto SJ, Shoptaw S, Ho D, Miotto K. Efficacy of Combining Varenicline and Naltrexone for Smoking Cessation and Drinking Reduction: A Randomized Clinical Trial. Am J Psychiatry 2021; 178:818-828. [PMID: 34080890 PMCID: PMC8999864 DOI: 10.1176/appi.ajp.2020.20070993] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Pharmacological treatments that can concomitantly address cigarette smoking and heavy drinking stand to improve health care delivery for these highly prevalent co-occurring conditions. This superiority trial compared the combination of varenicline and naltrexone against varenicline alone for smoking cessation and drinking reduction among heavy-drinking smokers. METHODS This was a phase 2 randomized double-blind clinical trial. Participants (N=165) who were daily smokers and drank heavily received either 2 mg/day of varenicline plus 50 mg/day of naltrexone or 2 mg/day of varenicline plus matched placebo pills for 12 weeks. Primary outcomes were 7-day point prevalence of nicotine abstinence (bioverified by a breath CO reading ≤5 ppm) at the 26-week follow-up and number of drinks per drinking day during the 12-week treatment phase. RESULTS Smoking abstinence at week 26 was significantly higher in the varenicline plus placebo condition than in the varenicline plus naltrexone condition (N=37 [45.1%] compared with N=22 [26.5%]). For drinks per drinking day, there was a medication effect favoring the combination of varenicline and naltrexone over varenicline alone across the 12-week treatment phase, although it did not meet the significance threshold. CONCLUSIONS These findings suggest that smoking cessation and drinking reduction can be concomitantly targeted with pharmacotherapy and that while varenicline alone may be sufficient as a smoking cessation aid in heavy-drinking smokers, the combination of varenicline and naltrexone may confer benefits with regard to drinking outcomes, particularly during the 12-week period of active medication treatment.
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Affiliation(s)
- Lara A. Ray
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA,Department of Psychiatry and Biobehavioral Sciences, University of California at Los Angeles, Los Angeles, CA
| | - ReJoyce Green
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Craig Enders
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Adam M. Leventhal
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | - Erica N. Grodin
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Gang Li
- Department of Biostatistics, University of California at Los Angeles, Los Angeles, CA
| | - Aaron Lim
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Emily Hartwell
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Alex Venegas
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Lindsay Meredith
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Steven J. Nieto
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Steven Shoptaw
- Department of Family Medicine, University of California at Los Angeles, Los Angeles, CA
| | - Diana Ho
- Department of Psychology, University of California at Los Angeles, Los Angeles, CA
| | - Karen Miotto
- Department of Psychiatry and Biobehavioral Sciences, University of California at Los Angeles, Los Angeles, CA
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McConaghy K, Kunze KN, Murray T, Molloy R, Piuzzi NS. Smoking Cessation Initiatives in Total Joint Arthroplasty: An Evidence-Based Review. JBJS Rev 2021; 9:01874474-202108000-00012. [PMID: 34449441 DOI: 10.2106/jbjs.rvw.21.00009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
» As smoking increases the risk of adverse events and leads to increased hospital costs following total joint arthroplasty (TJA), many institutions have introduced perioperative smoking cessation initiatives. Although such programs have been demonstrated to improve outcomes for smokers undergoing TJA, the optimal approach, duration, and timing of smoking cessation models have not been well-defined. » Overall, initiating a smoking cessation program 4 weeks preoperatively is likely adequate to provide clinically meaningful reductions in postoperative complications for smokers following TJA, although longer periods of cessation should be encouraged if feasible. » Patients brought in for emergency surgical treatment who cannot participate in a preoperative intervention may still benefit from an intervention instituted in the immediate postoperative period. » Cotinine testing may provide some benefit for encouraging successful smoking cessation and validating self-reported smoking status, although its utility is limited by its short half-life. Further study is needed to determine the value of other measures of cessation such as carbon monoxide breath testing. » Smoking cessation programs instituted prior to TJA have been demonstrated to be cost-effective over both the short and long term.
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Affiliation(s)
- Kara McConaghy
- Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Kyle N Kunze
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY
| | - Trevor Murray
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Robert Molloy
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Nicolas S Piuzzi
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
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Endrighi R, Rueras N, Dunsiger SI, Borrelli B. Perceived Pain and Smoking Interrelations and Expectancies Are Associated With Pain and Smoking Cessation in Individuals With Mobility Impairments. Nicotine Tob Res 2021; 23:179-185. [PMID: 31287549 DOI: 10.1093/ntr/ntz111] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 07/08/2019] [Indexed: 01/27/2023]
Abstract
INTRODUCTION Smoking and pain are highly prevalent among individuals with mobility impairments (MIs; use assistive devices to ambulate). The role of pain-related smoking motives and expectancies in smoking cessation is unknown. We examined cross-sectional and prospective associations between a novel measure of pain-related smoking motives (how smokers with pain perceive their pain and smoking to be interrelated) and pain and smoking behavior in smokers with MI. METHODS This is a secondary data analysis of a smoking cessation induction trial (N = 263; 55% female) in smokers with MI. Participants did not have to want to quit to enroll. Pain-related smoking motives and expectancies were assessed at baseline with the pain and smoking inventory (PSI) which measures perceived pain and smoking interrelations in three distinct but related domains (smoking to cope with pain, pain as a motivator of smoking and as a barrier to cessation). Other measures included pain occurrence and interference, nicotine dependence, motivation and self-efficacy to quit smoking, and number of cigarettes per day. Biochemically verified smoking abstinence was assessed at 6 months. RESULTS PSI scores were significantly higher among smokers with chronic pain occurrence compared to occasional and to no occurrence (p < .002) and were associated with greater pain interference (ps < .01) and lower self-efficacy to quit smoking (ps < .01). In prospective analyses adjusted for age, treatment group, and chronic pain, only expectancies of smoking to help cope with pain predicted lower odds of abstinence. CONCLUSIONS Targeting expectancies of smoking as a mechanism to cope with pain may be useful in increasing smoking cessation in pain populations. IMPLICATIONS Individuals with MI have a high prevalence of smoking and pain, yet the extent to which this population perceives pain and smoking to be interrelated is unknown. This is the first article to examine prospective associations between a novel measure of perceived pain and smoking interrelations (PSI) and smoking outcomes. The PSI was associated with greater pain and lower self-efficacy for quitting. Prospectively, the PSI subscale tapping into expectancies that smoking help coping with pain predicted a lower probability of smoking abstinence. In smokers with MI, expectancies of smoking as pain-coping mechanism may be an important clinical target.
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Affiliation(s)
- Romano Endrighi
- Center for Behavioral Science Research, Henry M. Goldman School of Dental Medicine, Boston University, Boston, MA
| | - Nicolle Rueras
- Center for Behavioral Science Research, Henry M. Goldman School of Dental Medicine, Boston University, Boston, MA
| | - Shira I Dunsiger
- Department of Behavioral and Social Sciences, Brown School of Public Health, Brown University, Providence, RI.,Centers for Behavioral and Preventive Medicine, The Miriam Hospital, Providence, RI
| | - Belinda Borrelli
- Center for Behavioral Science Research, Henry M. Goldman School of Dental Medicine, Boston University, Boston, MA
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Determining Optimal Cutoffs for Exhaled Carbon Monoxide and Salivary Cotinine to Identify Smokers among Korean Americans in a Smoking Cessation Clinical Trial. J Smok Cessat 2021; 2021:6678237. [PMID: 34306232 PMCID: PMC8279201 DOI: 10.1155/2021/6678237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/11/2021] [Indexed: 11/17/2022] Open
Abstract
Introduction It is critical to accurately identify individuals who continue to smoke even after treatment, as this may prompt the use of more intensive and effective treatment strategies to help them attain complete abstinence. Aims This study examined optimal cutoffs for exhaled carbon monoxide (CO) and salivary cotinine to identify smokers among Korean Americans in a smoking cessation clinical trial. Methods CO and cotinine were measured three to four times over 12 months from the quit day. Statistical analysis was conducted using Receiver Operating Characteristic (ROC) curves. Results A CO cutoff of 5 parts per million provided robust sensitivity (80.8-98.3%) and perfect specificity (100%), and a salivary cotinine cutoff of level 2 (30-100 ng/ml) provided the best sensitivity (91.2-95.6%) and perfect specificity (100%). Using these cutoffs, the agreement between self-reports and the two biomarkers ranged from 88.6% to 97.7%. The areas under ROC curves (AUCs) of exhaled CO ranged from 0.90 to 0.99, all of which were significant (all p values < 0.001), and the AUCs of salivary cotinine ranged from 0.96 to 0.98 (all p values < 0.001). Conclusion Exhaled CO and salivary cotinine are complementary, and they should be used together to verify smoking abstinence for smokers in a clinical trial.
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Dallery J, Stinson L, Bolívar H, Modave F, Salloum RG, Viramontes TM, Rohilla P. mMotiv8
: A smartphone‐based contingency management intervention to promote smoking cessation. J Appl Behav Anal 2020; 54:38-53. [DOI: 10.1002/jaba.800] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 10/19/2020] [Accepted: 10/19/2020] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - François Modave
- Department of Health Outcomes & Biomedical Informatics University of Florida
| | - Ramzi G. Salloum
- Department of Health Outcomes & Biomedical Informatics University of Florida
| | | | - Pulkit Rohilla
- Department of Health Outcomes & Biomedical Informatics University of Florida
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Benowitz NL, Bernert JT, Foulds J, Hecht SS, Jacob P, Jarvis MJ, Joseph A, Oncken C, Piper ME. Biochemical Verification of Tobacco Use and Abstinence: 2019 Update. Nicotine Tob Res 2020; 22:1086-1097. [PMID: 31570931 DOI: 10.1093/ntr/ntz132] [Citation(s) in RCA: 295] [Impact Index Per Article: 73.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/31/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND The changing prevalence and patterns of tobacco use, the advent of novel nicotine delivery devices, and the development of new biomarkers prompted an update of the 2002 Society for Research on Nicotine and Tobacco (SRNT) report on whether and how to apply biomarker verification for tobacco use and abstinence. METHODS The SRNT Treatment Research Network convened a group of investigators with expertise in tobacco biomarkers to update the recommendations of the 2002 SNRT Biochemical Verification Report. RESULTS Biochemical verification of tobacco use and abstinence increases scientific rigor and is recommended in clinical trials of smoking cessation, when feasible. Sources, appropriate biospecimens, cutpoints, time of detection windows and analytic methods for carbon monoxide, cotinine (including over the counter tests), total nicotine equivalents, minor tobacco alkaloids, and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol are reviewed, as well as biochemical approaches to distinguishing cigarette smoking from use of electronic nicotine delivery devices (ENDS). CONCLUSIONS Recommendations are provided for whether and how to use biochemical verification of tobacco use and abstinence. Guidelines are provided on which biomarkers to use, which biospecimens to use, optimal cutpoints, time windows to detection, and methodology for biochemical verifications. Use of combinations of biomarkers is recommended for assessment of ENDS use. IMPLICATIONS Biochemical verification increases scientific rigor, but there are drawbacks that need to be assessed to determine whether the benefits of biochemical verification outweigh the costs, including the cost of the assays, the feasibility of sample collection, the ability to draw clear conclusions based on the duration of abstinence, and the variability of the assay within the study population. This paper provides updated recommendations from the 2002 SRNT report on whether and how to use biochemical markers in determining tobacco use and abstinence.
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Affiliation(s)
- Neal L Benowitz
- Division of Clinical Pharmacology and Experimental Therapeutics, Departments of Medicine and Biopharmaceutical Sciences; Center for Tobacco Control Research and Education, University of California San Francisco, San Francisco, CA
| | - John T Bernert
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA
| | - Jonathan Foulds
- Departments of Public Health Sciences and Psychiatry, Penn State College of Medicine, Hershey, PA
| | - Stephen S Hecht
- Departments of Laboratory Medicine and Pathology, Pharmacology, and Medicinal Chemistry, University of Minnesota, Masonic Cancer Center, Minneapolis, MN
| | - Peyton Jacob
- Departments of Medicine and Psychiatry, University of California San Francisco, San Francisco, CA
| | - Martin J Jarvis
- Department of Behavioural Science and Health, University College London, London, UK
| | - Anne Joseph
- Department of Medicine, University of Minnesota Medical School, Minneapolis, MN
| | - Cheryl Oncken
- Department of Medicine, University of Connecticut, Farmington, CT
| | - Megan E Piper
- Center for Tobacco Research and Intervention, Department of Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI
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McCarthy DE, Versella MV. Quitting Failure and Success With and Without Using Medication: Latent Classes of Abstinence and Adherence to Nicotine Monotherapy, Combination Therapy, and Varenicline. Nicotine Tob Res 2020; 21:1488-1495. [PMID: 30107419 DOI: 10.1093/ntr/nty157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 08/08/2017] [Indexed: 11/12/2022]
Abstract
INTRODUCTION Nonadherence to pharmacotherapies complicates studies of comparative pharmacotherapy effectiveness. Modeling adherence and abstinence simultaneously may facilitate analysis of both treatment acceptability and effectiveness. METHODS Secondary analyses of a three-arm randomized comparative trial of nicotine patch, varenicline, and combination nicotine patch and lozenge among adult daily smokers (N = 1086) were conducted. Adherence rates collected via interactive voice response systems during the first 27 days of quitting were compared across treatment conditions. Repeated measures latent class analyses of adherence and abstinence in 3-day parcels through 27 days of a quit attempt were conducted with treatment, demographic, and smoking history covariates. RESULTS Adherence varied across treatments and was lowest for nicotine lozenge use in combination nicotine replacement therapy (NRT). Five latent classes that differed significantly in 6-month abstinence rates were retained, including three subgroups of adherent participants varying in treatment response and two nonadherent groups varying in abstinence probabilities. Nonadherence was more likely among those receiving varenicline and combination NRT, relative to patch monotherapy. Varenicline and combination NRT did not promote abstinence among adherent latent classes but did promote abstinence among those partially adherent, relative to patch alone. Combination therapy attenuated increased risk of treatment disengagement with more years smoking. Minority smokers, those high in dependence, and those with shorter past abstinence were at increased risk for low-adherence and low-abstinence latent classes. CONCLUSIONS Varenicline and combination nicotine patch and lozenge are less likely to be used as directed and may not increase first-month abstinence better than patch alone when taken adherently. IMPLICATIONS This secondary analysis of adherence and abstinence in a comparative effectiveness trial shows that adherence is highest for the nicotine patch, next highest for varenicline, and lowest for combination nicotine patch and lozenge therapy due to low lozenge use. Distinct latent classes were found that varied in both first-month abstinence and adherence. Varenicline and combination NRT may not enhance abstinence over patch alone among smokers who take medication adherently. Adherent use of medication especially benefits those who are low in dependence and have positive quitting histories; it is less beneficial to at-risk smokers and members of racial minorities.
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Affiliation(s)
- Danielle E McCarthy
- Center for Tobacco Research and Intervention, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI.,Division of General Internal Medicine, Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI
| | - Mark V Versella
- Department of Psychology, School of Arts and Science, Rutgers, the State University of New Jersey, New Brunswick, NJ.,Institute for Health, Health Care Policy and Aging Research, Rutgers, The State University of New Jersey, New Brunswick, NJ
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Bohadana A, Freier-Dror Y, Peles V, Babai P, Izbicki G. Extending varenicline preloading to 6 weeks facilitates smoking cessation: A single-site, randomised controlled trial. EClinicalMedicine 2020; 19:100228. [PMID: 32055787 PMCID: PMC7005428 DOI: 10.1016/j.eclinm.2019.11.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 11/21/2019] [Accepted: 11/28/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Initiating varenicline use 4 weeks before the target quit date (TQD) reduces smoking in the run-in phase and increases end-treatment cessation rates; however, the lack of a smoke intake plateau suggests longer preloading periods are required. This study assessed whether varenicline preloading for 6 weeks reduced pre-quit smoke intake and enhanced 6-month abstinence outcomes compared with the standard 1-week preloading. METHODS In this randomised single-centre controlled trial, (ClinicalTrials.gov identifier: NCT02634281), conducted between February 2016 and July 2018 in Israel, daily smokers (n = 242) aged ≥ 18 years were randomly assigned (1:1) to receive varenicline preloading for 6 weeks (n = 121) or a placebo for 5 weeks followed by varenicline for 1 week (n = 121) before the TQD. Participants and researchers were masked to both group assignment and treatment allocation. Both groups received standard 12-week post-TQD varenicline treatment. The primary outcome was the 24-week biochemically verified continuous abstinence rate (CAR) from weeks 6 (TQD)-30. Secondary outcomes included the 23-week CAR from 1-week post-TQD (week 7) to week 30, and the 7-day point-prevalence (PP) abstinence at week 30. Other measures included pre- and post-quit rewards, smoking urges, nausea, aversion, and markers of cigarette consumption. FINDINGS By intention-to-treat, the 24-week CAR, weeks 6-30 with extended preloading was significantly higher than with standard preloading (23·1% vs. 4·1%; risk reduction [RR]: -0·19 [95% confidence interval [CI]:-0·10-0·24]; p < 0·001). Extended preloading also showed better secondary outcomes. Extended preloading significantly decreased pre-quit rewards, urges, and smoke intake, including unsolicited smoking abstinence. Post-quit urges remained remarkably lower with extended preloading. Participants receiving extended preloading reported more nausea at week 4 (39.6% vs 11.5%) and abnormal dreams at week 6 (7.7% vs. 0%). Participants receiving standard preloading reported more constipation at week 7 (7.6% vs. 0%) and dizziness at weeks 7 (12.1% vs. 2.5%) and 12 (10.7% vs 1.4%). INTERPRETATION Extended preloading reduced ad lib smoking, enhanced cessation rates at 3 and 6 months, and decreased pre- and post-quit rewards and smoking drive in a pattern compatible with a reinforcement-reduction mechanism. These data substantiate extending the standard pre-treatment period, and suggest that targeting pre-quit smoking sensations should be a treatment priority, although confirmatory evidence is needed from larger clinical trials. FUNDING This study was funded by a 2013 Global Research Award for Nicotine Dependence (GRAND) supported by Pfizer, Inc. (#WI182915).
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Affiliation(s)
- Abraham Bohadana
- Respiratory Research Unit, Pulmonary Institute, Shaare Zedek Medical Center, Affiliated with the Hadassah School of Medicine, Hebrew University of Jerusalem, 12 Baiyt Street, Jerusalem 91031, Israel
- Corresponding author.
| | - Yossi Freier-Dror
- Mashav Applied Research, 5 Chail Nashim Street, Jerusalem 9332005, Israel
| | - Vardit Peles
- Respiratory Research Unit, Pulmonary Institute, Shaare Zedek Medical Center, Affiliated with the Hadassah School of Medicine, Hebrew University of Jerusalem, 12 Baiyt Street, Jerusalem 91031, Israel
| | - Polina Babai
- Mashav Applied Research, 5 Chail Nashim Street, Jerusalem 9332005, Israel
| | - Gabriel Izbicki
- Respiratory Research Unit, Pulmonary Institute, Shaare Zedek Medical Center, Affiliated with the Hadassah School of Medicine, Hebrew University of Jerusalem, 12 Baiyt Street, Jerusalem 91031, Israel
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Pericot-Valverde I, Yoon JH, Gaalema DE. Single- and cross-commodity delay discounting of money and e-cigarette liquid in experienced e-cigarette users. Drug Alcohol Depend 2020; 206:107740. [PMID: 31778948 PMCID: PMC7250042 DOI: 10.1016/j.drugalcdep.2019.107740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 11/05/2019] [Accepted: 11/11/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND Delay discounting (DD) research has improved our understanding of important behavioral processes associated with tobacco use. Little research has explored DD among e-cigarette users, and these studies have exclusively examined money as the only available commodity. This secondary analysis of a laboratory study explored discounting for money and e-liquid among e-cigarette users using two single-commodity discounting (SCD) tasks and one cross-commodity discounting (CCD) task. A secondary goal was to explore the extent to which results from the SCD and CCD tasks were correlated to each other and with measures of e-cigarette use. METHODS E-cigarette users (N = 27) completed two SCD tasks and one CCD task. The SCD tasks assessed choices between various amounts of either money now versus money later (M-M) or e-liquid now versus e-liquid later (mL-mL). The CCD task assessed choices between e-liquid now versus money later (mL-M). Discounting results were compared using logk and AUClog. RESULTS Discounting was greatest in the mL-mL task, followed by the M-M task, and then the mL-M task. AUClog and logk were significantly correlated across all discounting tasks. Attempts to quit vaping was positively associated with logk and negatively associated with AUClog and in both SCD tasks. CONCLUSIONS E-cigarette users discount e-liquid more than money in a SCD task. However, when the two commodities, money and e-liquid (CCD), are compared the substance of abuse is discounted to a lesser extent. Interventions that provide alternative reinforcers to compete with the reinforcing effects of nicotine intake may be especially indicated for treating e-cigarette dependence.
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Affiliation(s)
- Irene Pericot-Valverde
- School of Health Research, Clemson University, 605 Grove Road, Greenville, SC 29605, United States; Prisma Health-Upstate, Department of Internal Medicine, 701 Grove Road, Greenville, SC 29605, United States.
| | - Jin H Yoon
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston, 1941 East Road, Houston, TX 77054, United States
| | - Diann E Gaalema
- Vermont Center on Behavior and Health, 1 South Prospect Street, University of Vermont, Burlington, VT 05401, United States; Departments of Psychology and Psychiatry, 1 South Prospect Street, University of Vermont, Burlington, VT 05401, United States
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Achilihu H, Feng J, Wang L, Bernert JT. Tobacco Use Classification by Inexpensive Urinary Cotinine Immunoassay Test Strips. J Anal Toxicol 2019; 43:149-153. [PMID: 30395272 DOI: 10.1093/jat/bky075] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/30/2018] [Accepted: 09/11/2018] [Indexed: 01/10/2023] Open
Abstract
Urinary cotinine is one of the most commonly measured biomarkers reflecting recent exposure to nicotine. In some cases a simple qualitative dichotomization of smokers and non-smokers is all that is required. NicAlert® test strips have been evaluated for this purpose, but other recently introduced, inexpensive single-line test strips have not. In this study we evaluated two such strips with nominal cutoffs of 200 and 10 ng/mL. A total of 800 urine samples with known cotinine concentrations determined by an LC-MS-MS method were examined, including 400 urine samples ranging from 0.23 to more than 24,000 ng/mL by the 200 ng/mL strip, and 400 samples with concentrations <200 ng/mL by the 10 ng/mL cutoff strip. Both test strips performed well in these evaluations. Classification relative to LC-MS-MS by the 200 ng/mL strips had a sensitivity of 99.5% and specificity of 92%, with 95.8% accuracy. The 10 ng/mL strips had a sensitivity of 98.7% and specificity of 90.1%, with 93.3% accuracy. The positive predictive value for the 200 ng/mL strips was 92.6% and the negative predictive value was 99.5%. For the 10 ng/mL strips, the corresponding values were 85.4 and 99.2%, respectively. The prevalence of positive samples was 50% in the 200 ng/mL group, and 37% in the 10 ng/mL set. Each strip was read by two readers with an overall agreement of >98%. Our results suggest that these simple and inexpensive lateral flow immunoassay test strips can provide useful qualitative estimates of nicotine exposures for appropriate applications within the inherent limitations of sensitivity and precision of the immunoassay test strip format.
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Affiliation(s)
- Honest Achilihu
- Tobacco Exposure Biomarkers Laboratory, Tobacco and Volatile Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Chamblee, Bldg 102, Atlanta, GA, USA
| | - June Feng
- Tobacco Exposure Biomarkers Laboratory, Tobacco and Volatile Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Chamblee, Bldg 102, Atlanta, GA, USA
| | - Lanqing Wang
- Tobacco Exposure Biomarkers Laboratory, Tobacco and Volatile Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Chamblee, Bldg 102, Atlanta, GA, USA
| | - John T Bernert
- Tobacco Exposure Biomarkers Laboratory, Tobacco and Volatile Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Chamblee, Bldg 102, Atlanta, GA, USA
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Etter JF. Assessment of the accuracy of salivary cotinine readings from NicAlert strips against a liquid chromatography tandem mass spectrometry assay in self-reported non-smokers who passed carbon monoxide but failed NicAlert validation. Addiction 2019; 114:2252-2256. [PMID: 31408237 DOI: 10.1111/add.14775] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/18/2018] [Accepted: 08/02/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIMS NicAlert produces semi-quantitative assessments of cotinine levels in saliva or urine for verification of smoking abstinence. This study aimed to assess the accuracy of NicAlert readings against a liquid chromatography tandem mass spectrometry assay in smokers who had passed expired-air carbon monoxide (CO) verification but failed NicAlert verification. DESIGN Comparison of NicAlert readings against readings from a reference assay using liquid chromatography tandem mass spectrometry. SETTING Geneva, Switzerland. PARTICIPANTS Self-reported non-smokers (n = 92) who in previous testing had CO of 0-3 parts per million (indicating no recent smoking) and reported not using any nicotine product, but had NicAlert readings ≥ 1 (indicating smoking). MEASUREMENTS NicAlert produces readings of 0, 1 and 2+, which are reported by the manufacturer to correspond to saliva cotinine concentrations of 0-10 ng/ml (indicating not smoking), 10-30 ng/ml and 30+ ng/ml, respectively. Liquid chromatography tandem mass spectrometry was used as the reference. FINDINGS For 82 participants with a NicAlert reading of 1, only two of the liquid chromatography tandem mass spectrometry values were within the purported range of 10-30 ng/ml; 71 were below 4 ng/ml and half the values were below 0.5 ng/ml. Two of the eight participants with NicAlert readings of 2 had laboratory values within the designated range. Neither of the two participants with NicAlert readings of 3 had a cotinine value within the designated range. CONCLUSIONS In people who had passed carbon monoxide verification, NicAlert readings yielded a very high false-positive rate in detecting levels of cotinine indicative of smoking.
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Affiliation(s)
- Jean-François Etter
- Institute of Global Health, Faculty of Medicine, University of Geneva, Switzerland
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15
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Heffner JL, Evins AE, Russ C, Lawrence D, Ayers CR, McRae T, Aubin LS, Krishen A, West R, Anthenelli RM. Safety and efficacy of first-line smoking cessation pharmacotherapies in bipolar disorders: Subgroup analysis of a randomized clinical trial. J Affect Disord 2019; 256:267-277. [PMID: 31195244 PMCID: PMC8936081 DOI: 10.1016/j.jad.2019.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/17/2019] [Accepted: 06/02/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Post hoc analyses of EAGLES data to examine safety and efficacy of first-line smoking cessation pharmacotherapies in smokers with bipolar disorders (BD). METHODS Smokers with BD I/II (n = 285; 81.4% with BD I) and a comparison nonpsychiatric cohort (NPC; n = 2794) were randomly assigned to varenicline, bupropion, nicotine replacement therapy (NRT), or placebo for 12 weeks, plus weekly counseling. Primary outcomes were occurrence of moderate to severe neuropsychiatric adverse events (NPSAEs) and Weeks 9-12 biochemically-confirmed continuous abstinence (CA) rates. RESULTS For BD smokers, NPSAE risk differences versus placebo were: varenicline, 6.17 (95% CI: -7.84 to 20.18); bupropion, 4.09 (-8.82 to 16.99); NRT, -0.56 (-12.34 to 11.22). ORs for Weeks 9-12 CA, comparing active medication to placebo among BD smokers were: varenicline, 2.61 (0.68-9.95); bupropion, 1.29 (0.31-5.37), NRT, 0.71 (0.14-3.74). Pooling across treatments, NPSAE occurrence was higher (10.7% versus 2.3%; P < 0.001) and CA rates were lower (22.8% versus 13.3%; P = 0.008) in BD than NPC. LIMITATIONS Study not powered to detect differences in safety and efficacy in the BD subcohort; generalizability limited to stably treated BD without current substance use disorders. CONCLUSIONS Smokers with BD had higher risk of NPSAEs and were less likely to quit overall than NPC smokers. Among smokers with BD, NPSAE risk difference estimates for active treatments versus placebo ranged from 1% lower to 6% higher. Efficacy of varenicline in smokers with BD was similar to EAGLES main outcomes; bupropion and NRT effect sizes were descriptively lower. Varenicline may be a tolerable and effective cessation treatment for smokers with BD. TRIAL REGISTRATION ClinicalTrials.gov identifier (https://clinicaltrials.gov/): NCT01456936.
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Affiliation(s)
- Jaimee L Heffner
- Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, M3-B232; PO Box 19024; Seattle, WA 98109, USA.
| | - A Eden Evins
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | | | | | | | | | | | - Alok Krishen
- PAREXEL International on behalf of GlaxoSmithKline, Research Triangle Park, NC, USA
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Gendy MNS, Di Ciano P, Kowalczyk WJ, Barrett SP, George TP, Heishman S, Le Foll B. Testing the PPAR hypothesis of tobacco use disorder in humans: A randomized trial of the impact of gemfibrozil (a partial PPARα agonist) in smokers. PLoS One 2018; 13:e0201512. [PMID: 30260990 PMCID: PMC6160014 DOI: 10.1371/journal.pone.0201512] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/12/2018] [Indexed: 11/19/2022] Open
Abstract
Previous pre-clinical studies demonstrated a promising role of alpha-type peroxisome proliferator-activated receptors (PPARα) agonists in decreasing nicotine self-administration and nicotine-seeking behavior in animals. Our goal was to investigate the potential of gemfibrozil, a PPARα agonist, on reducing tobacco smoking in humans. Methods: This was a double-blind, placebo-controlled, crossover study evaluating the effects of gemfibrozil (1200 mg/day) on smoking in 27 treatment-seeking smokers. The study had two 2-week phases separated by a washout period of at least 1 week. In each phase and after 1 week on medication, participants underwent a lab session where cue reactivity and forced choice paradigms were conducted. Physiological responses and self-reported craving were monitored during the presentation of smoking and neutral cues. In addition, two types of cigarettes were used in the forced choice paradigms: the Nicotinized cigarettes (Nic) and the Denicotinized cigarettes (Denic). The goal of the forced choice was to calculate the percentage of choice of Nic cigarettes while taking gemfibrozil or placebo. The number of quit days was calculated during the two quit attempts weeks (one while taking gemfibrozil and one while taking placebo) of the study. Results: There were no significant differences between gemfibrozil and placebo groups in the percentage of choice of Nic cigarettes, the cue-reactivity (both physiological and subjective measures), or in the number of days of abstinence. Conclusions: Although preclinical studies with PPAR α agonists showed promising results, this preliminary study did not demonstrate positive effect of gemfibrozil on tobacco use and cessation indices.
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Affiliation(s)
- Marie N. S. Gendy
- Translational Addiction Research Laboratory, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Pharmacology, University of Toronto, Toronto, Ontario, Canada
| | - Patricia Di Ciano
- Translational Addiction Research Laboratory, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - William J. Kowalczyk
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, United States of America
- Department of Psychology, Hartwick College, Oneonta, New York, United States of America
| | - Sean P. Barrett
- Department of Psychology & Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Tony P. George
- Addictions Division, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, Division of Brain and Therapeutics, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
- Biobehavioural Addictions and Concurrent Disorders Research Laboratory (BACDRL) Centre for Addiction and Mental Health (CAMH), Toronto, Ontario, Canada
| | - Stephen Heishman
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, United States of America
| | - Bernard Le Foll
- Translational Addiction Research Laboratory, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Pharmacology, University of Toronto, Toronto, Ontario, Canada
- Addictions Division, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, Division of Brain and Therapeutics, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
- Alcohol Research and Treatment Clinic, Addiction Medicine Services, Ambulatory Care and Structured Treatments, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
- * E-mail:
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Shaikh RB, Sreedharan J, Al Sharbatti S, Muttappallymyalil J, Lee L, Weitzman M. Salivary cotinine concentration and carbon monoxide levels in young adults smoking midwakh in comparison with cigarette smokers. Tob Control 2018; 28:141-145. [DOI: 10.1136/tobaccocontrol-2017-054202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 05/19/2018] [Accepted: 06/05/2018] [Indexed: 11/03/2022]
Abstract
ObjectivesTo estimate and compare the salivary cotinine levels using a semiquantitative method, called NicAlert, between three groups: non-smokers, daily smokers of cigarettes and daily smokers of midwakh, and to compare the carbon monoxide (CO) levels among these groups.Materials and methodsA total of 159 adult male volunteers aged 20 and above were included, with 54 current cigarette smokers, 52 current midwakh smokers and 53 non-smokers. Estimate of breath carbon monoxide and salivary cotinine were collected, as well as sociodemographic characteristics and details of smoking habits and second-hand smoke exposure among participants. Institutional review board approval was obtained and data were analysed using SPSS V.21 with the Kruskal-Wallis test used to obtain differences in the distribution.ResultsThere was no significant difference in the median breath CO and salivary cotinine levels between cigarette and midwakh smokers. Levels of breath CO were significantly higher in cigarette and midwakh smokers as compared with non-smokers (19.5, 17.5 and 6.0, respectively, p<0.05); the same relationship was observed for cotinine levels among cigarette and midwakh smokers as compared with non-smokers (4.0, 3.0 and 0.0, respectively, p≤0.05). Additionally, the values of both salivary cotinine and breath CO increased with the frequency of tobacco use.ConclusionThese are the first data that we are aware of that demonstrate that in terms of at least two key biomarkers of tobacco use, there are comparable levels of exposure between cigarettes and midwakh users, demonstrating a need for intensified attention to the use of midwakh.
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Wong J, Raveendran R, Chuang J, Friedman Z, Singh M, Patras J, Wong DT, Chung F. Utilizing Patient E-learning in an Intervention Study on Preoperative Smoking Cessation. Anesth Analg 2018. [DOI: 10.1213/ane.0000000000002885] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Biospecimens and the ABCD study: Rationale, methods of collection, measurement and early data. Dev Cogn Neurosci 2018; 32:97-106. [PMID: 29606560 PMCID: PMC6487488 DOI: 10.1016/j.dcn.2018.03.005] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 02/07/2018] [Accepted: 03/06/2018] [Indexed: 01/23/2023] Open
Abstract
Biospecimen collection in the Adolescent Brain Cognitive Development (ABCD) study – of hair samples, shed deciduous (baby) teeth, and body fluids – will serve dual functions of screening for study eligibility, and providing measures of biological processes thought to predict or correlate with key study outcomes on brain and cognitive development. Biosamples are being collected annually to screen for recency of drug use prior to the neuroimaging or cognitive testing visit, and to store for the following future studies: (1) on the effects of exposure to illicit and recreational drugs (including alcohol and nicotine); (2) of pubertal hormones on brain and cognitive developmental trajectories; (3) on the contribution of genomics and epigenomics to child and adolescent development and behavioral outcomes; and (4) with pre- and post-natal exposure to environmental neurotoxicants and drugs of abuse measured from novel tooth analyses. The present manuscript describes the rationales for inclusion and selection of the specific biospecimens, methodological considerations for each measure, future plans for assessment of biospecimens during follow-up visits, and preliminary ABCD data to illustrate methodological considerations.
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20
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Goldstein AO, Gans SP, Ripley-Moffitt C, Kotsen C, Bars M. Use of Expired Air Carbon Monoxide Testing in Clinical Tobacco Treatment Settings. Chest 2017; 153:554-562. [PMID: 29137909 DOI: 10.1016/j.chest.2017.11.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 10/12/2017] [Accepted: 11/04/2017] [Indexed: 11/26/2022] Open
Abstract
Carbon monoxide (CO) testing is considered an easy, noninvasive, and objective contribution to the assessment of smoking behavior, as CO is rapidly absorbed into the bloodstream when lit cigarettes or cigars are inhaled. CO testing is a medically important billable outpatient service that can contribute to sustainability of face to face tobacco use treatment services by clinicians. This article reviews research on the clinical use of CO testing to provide biomedical feedback in assessing smoking behavior, educating smokers on tobacco health effects, assisting with treatment planning, and as a motivational tool to encourage people to become tobacco free. Further research can focus on how to best incorporate CO testing into clinical practice, including more research on outcomes and methods to ensure that insurers reimburse for testing and improved ways to use CO testing to initiate attempts to quit tobacco use, to maintain cessation, and to prevent relapse.
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Affiliation(s)
- Adam O Goldstein
- Department of Family Medicine, University of North Carolina, Chapel Hill, NC.
| | - Stephanie P Gans
- Department of Family Medicine, University of North Carolina, Chapel Hill, NC
| | | | - Chris Kotsen
- Robert Wood Johnson University Hospital Somerset, Somerville, NJ
| | - Matthew Bars
- IQuit Smoking Program, Jersey City Medical Center, Jersey City, NJ
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21
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Schick SF, Blount BC, Jacob P, Saliba NA, Bernert JT, El Hellani A, Jatlow P, Pappas RS, Wang L, Foulds J, Ghosh A, Hecht SS, Gomez JC, Martin JR, Mesaros C, Srivastava S, St Helen G, Tarran R, Lorkiewicz PK, Blair IA, Kimmel HL, Doerschuk CM, Benowitz NL, Bhatnagar A. Biomarkers of exposure to new and emerging tobacco delivery products. Am J Physiol Lung Cell Mol Physiol 2017; 313:L425-L452. [PMID: 28522563 PMCID: PMC5626373 DOI: 10.1152/ajplung.00343.2016] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 04/18/2017] [Accepted: 05/09/2017] [Indexed: 12/20/2022] Open
Abstract
Accurate and reliable measurements of exposure to tobacco products are essential for identifying and confirming patterns of tobacco product use and for assessing their potential biological effects in both human populations and experimental systems. Due to the introduction of new tobacco-derived products and the development of novel ways to modify and use conventional tobacco products, precise and specific assessments of exposure to tobacco are now more important than ever. Biomarkers that were developed and validated to measure exposure to cigarettes are being evaluated to assess their use for measuring exposure to these new products. Here, we review current methods for measuring exposure to new and emerging tobacco products, such as electronic cigarettes, little cigars, water pipes, and cigarillos. Rigorously validated biomarkers specific to these new products have not yet been identified. Here, we discuss the strengths and limitations of current approaches, including whether they provide reliable exposure estimates for new and emerging products. We provide specific guidance for choosing practical and economical biomarkers for different study designs and experimental conditions. Our goal is to help both new and experienced investigators measure exposure to tobacco products accurately and avoid common experimental errors. With the identification of the capacity gaps in biomarker research on new and emerging tobacco products, we hope to provide researchers, policymakers, and funding agencies with a clear action plan for conducting and promoting research on the patterns of use and health effects of these products.
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Affiliation(s)
- Suzaynn F Schick
- Division of Occupational and Environmental Medicine, Department of Medicine, University of California, San Francisco, California;
| | | | - Peyton Jacob
- Division of Clinical Pharmacology and Experimental Therapeutics, Department of Medicine, University of California, San Francisco, California
| | - Najat A Saliba
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
- Center for the Study of Tobacco Products, Virginia Commonwealth University, Richmond, Virginia
| | - John T Bernert
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Ahmad El Hellani
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
- Center for the Study of Tobacco Products, Virginia Commonwealth University, Richmond, Virginia
| | - Peter Jatlow
- Departments of Laboratory Medicine and Psychiatry, Yale University, New Haven, Connecticut
| | - R Steven Pappas
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Lanqing Wang
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Jonathan Foulds
- Tobacco Center of Regulatory Science, College of Medicine, Pennsylvania State University, Hershey, Pennsylvania
| | - Arunava Ghosh
- Marsico Lung Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Stephen S Hecht
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - John C Gomez
- Marsico Lung Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jessica R Martin
- Marsico Lung Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Clementina Mesaros
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Sanjay Srivastava
- Department of Medicine, Institute of Molecular Cardiology and Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
| | - Gideon St Helen
- Division of Clinical Pharmacology and Experimental Therapeutics, Department of Medicine, University of California, San Francisco, California
| | - Robert Tarran
- Marsico Lung Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Pawel K Lorkiewicz
- Department of Medicine, Institute of Molecular Cardiology and Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
| | - Ian A Blair
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Heather L Kimmel
- Division of Epidemiology, Services and Prevention Research, National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland
| | - Claire M Doerschuk
- Marsico Lung Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Neal L Benowitz
- Division of Clinical Pharmacology and Experimental Therapeutics, Departments of Medicine and Bioengineering and Therapeutic Sciences, University of California, San Francisco, California; and
| | - Aruni Bhatnagar
- Department of Medicine, Institute of Molecular Cardiology and Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
- American Heart Association Tobacco Regulation and Addiction Center, University of Louisville, Louisville, Kentucky
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Saliva Cotinine as a Measure of Smoking Abstinence in Contingency Management – A Feasibility Study. PSYCHOLOGICAL RECORD 2017. [DOI: 10.1007/s40732-017-0240-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Berndt N, de Vries H, Lechner L, Van Acker F, Froelicher ES, Verheugt F, Mudde A, Bolman C. High intensity smoking cessation interventions: Cardiac patients of low socioeconomic status and low intention to quit profit most. Neth Heart J 2016; 25:24-32. [PMID: 27752966 PMCID: PMC5179363 DOI: 10.1007/s12471-016-0906-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background Without assistance, smokers being admitted to the hospital for coronary heart disease often return to regular smoking within a year. Objective This study assessed the 12-month effectiveness of a telephone and a face-to-face counselling intervention on smoking abstinence among cardiac patients. Differential effects for subgroups varying in their socioeconomic status and intention to quit smoking were also studied. Methods A randomised controlled trial was used. During hospital stay, smokers hospitalised for coronary heart disease were assigned to usual care (n = 245), telephone counselling (n = 223) or face-to-face counselling (n = 157). Eligible patients were allocated to an intervention counselling group and received nicotine patches. After 12 months, self-reported continued abstinence was assessed and biochemically verified in quitters. Effects on smoking abstinence were tested using multilevel logistic regression analyses applying the intention-to-treat approach. Results Compared with usual care, differential effects of telephone and face-to-face counselling on continued abstinence were found in patients with a low socioeconomic status and in patients with a low quit intention. For these patients, telephone counselling increased the likelihood of abstinence threefold (OR = 3.10, 95 % CI 1.32–7.31, p = 0.01), whereas face-to-face counselling increased this likelihood fivefold (OR = 5.30, 95 % CI 2.13–13.17, p < 0.001). Considering the total sample, the interventions did not result in stronger effects than usual care. Conclusion Post-discharge telephone and face-to-face counselling interventions increased smoking abstinence rates at 12 months compared with usual care among cardiac patients of low socioeconomic status and low quit intentions. The present study indicates that patients of high socioeconomic status and high quit motivation require different cessation approaches.
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Affiliation(s)
- N Berndt
- Department of Psychology and Educational Sciences, Open University of the Netherlands, Heerlen, the Netherlands. .,Cellule d'Expertise Médicale, General Inspectorate of Social Security, Ministry of Social Security, Luxembourg, Luxembourg.
| | - H de Vries
- Department of Health Promotion, Caphri School for Public Health and Primary Care, Maastricht University, Maastricht, the Netherlands
| | - L Lechner
- Department of Psychology and Educational Sciences, Open University of the Netherlands, Heerlen, the Netherlands
| | - F Van Acker
- Department of Psychology and Educational Sciences, Open University of the Netherlands, Heerlen, the Netherlands.,Department of Remedial Education, Artesis Plantijn Hogeschool Antwerpen, Antwerpen, Belgium
| | - E S Froelicher
- Department of Physiological Nursing, School of Nursing, and Department of Epidemiology and Biostatistics, School of Medicine, University of California San Francisco, California, USA
| | - F Verheugt
- Department of Cardiology, Onze Lieve Vrouwe Gasthuis, Amsterdam, the Netherlands
| | - A Mudde
- Department of Psychology and Educational Sciences, Open University of the Netherlands, Heerlen, the Netherlands
| | - C Bolman
- Department of Psychology and Educational Sciences, Open University of the Netherlands, Heerlen, the Netherlands
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Fellows JL, Mularski RA, Leo MC, Bentz CJ, Waiwaiole LA, Francisco MC, Funkhouser K, Stoney CM. Referring Hospitalized Smokers to Outpatient Quit Services: A Randomized Trial. Am J Prev Med 2016; 51:609-19. [PMID: 27647061 PMCID: PMC5031367 DOI: 10.1016/j.amepre.2016.06.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 05/27/2016] [Accepted: 06/17/2016] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Linking outpatient cessation services to bedside counseling for hospitalized smokers can improve long-run quit rates. Adding an assisted referral (AR) offer to a tobacco treatment specialist consult service fits the team approach to care in U.S. hospitals. DESIGN A two-arm patient-randomized trial tested the effectiveness of adding an AR offer to outpatient smoking-cessation services and interactive voice recognition (AR+IVR) follow-up to a usual care (UC) tobacco-cessation consult for hospitalized smokers. SETTING/PARTICIPANTS Over 24 months (November 2011-November 2013), 898 hospitalized adult smokers interested in quitting smoking were recruited from three large hospitals in the Portland, Oregon, area: an integrated group model HMO (n=622), a community hospital (n=195), and an academic health center (n=81). INTERVENTION Tobacco treatment specialists identified smokers and provided an intensive bedside tobacco use assessment and cessation consultation (UC). AR+IVR recipients also received proactive ARs to available outpatient counseling programs and medications, and linked patients to a tailored IVR telephone follow-up system. MAIN OUTCOME MEASURES The primary outcome was self-reported 30-day abstinence at 6-month follow-up. Secondary outcomes included self-reported and continuous abstinence and biochemically confirmed 7-day abstinence at 6 months. Follow-up was completed in September 2014; data were analyzed in 2015. RESULTS A total of 597 and 301 hospitalized smokers were randomized to AR+IVR and UC, respectively. AR+IVR and UC recipients received 19.3 and 17.0 minutes of bedside counseling (p=0.372), respectively. Most (58%) AR+IVR patients accepted referrals for counseling, 43% accepted medications, and 28% accepted both. Self-reported 30-day abstinence for AR+IVR (17.9%) and UC (17.3%) were not statistically significant (p=0.569). Differences in 7-day, continuous, and biochemically confirmed abstinence by treatment group also were insignificant, overall and adjusting for site. CONCLUSIONS Adding an AR to outpatient counseling and medications did not increase cigarette abstinence at 6 months compared to UC alone.
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Affiliation(s)
| | | | - Michael C Leo
- Kaiser Permanente Center for Health Research, Portland, Oregon
| | - Charles J Bentz
- Tobacco Cessation and Prevention, Legacy Health System, Portland, Oregon
| | | | | | | | - Catherine M Stoney
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland
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Morris MC, Mielock AS, Rao U. Salivary stress biomarkers of recent nicotine use and dependence. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2016; 42:640-648. [PMID: 27463324 DOI: 10.1080/00952990.2016.1202263] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Although stress plays a critical role in vulnerability to nicotine use and dependence, the stress response factors that contribute to smoking behaviors remain poorly elucidated. To minimize the confounding effects of chronic nicotine use, assessing individuals with relatively short smoking histories is critical for characterizing the neurobiological substrates associated with nicotine dependence early in the course of illness. OBJECTIVES This pilot study examined sympathetic nervous system (alpha-amylase) and hypothalamic-pituitary-adrenal axis (cortisol, dehydroepiandrosterone) responses to the Trier Social Stress Test (TSST) in young adult smokers. Associations among objective indices of recent smoking (salivary cotinine, carbon monoxide in the breath [CO]), behavioral measures of nicotine dependence and withdrawal, and salivary biomarkers in response to the TSST were investigated. METHODS Smokers (N = 64; 28 males, 36 females) provided saliva samples at 30 min intervals for 2 h prior to the TSST and every 10 min for 1 h following the TSST. RESULTS Alpha-amylase responses to the TSST were positively associated with salivary cotinine levels but negatively associated with CO levels. Individuals with a lower level of nicotine dependence had increased cortisol responses to the stressor, whereas those with a higher level of nicotine dependence did not show any cortisol changes in response to the stressor. CONCLUSIONS These findings indicate that different mechanisms may be involved at different levels of nicotine dependence severity. Recent nicotine use and lower dependence severity may be associated with increased activation of the stress response systems. In contrast, more severe levels of dependence may downregulate stress response systems.
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Affiliation(s)
- Matthew C Morris
- a Department of Family and Community Medicine , Meharry Medical College , Nashville , TN , USA
| | - Alyssa S Mielock
- a Department of Family and Community Medicine , Meharry Medical College , Nashville , TN , USA
| | - Uma Rao
- b University of Tennessee , Knoxvillle , TN , USA
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Self-Reporting of Smoking Cessation in Cardiac Patients: How Reliable Is It and Is Reliability Associated With Patient Characteristics? J Addict Med 2016; 9:308-16. [PMID: 26083956 DOI: 10.1097/adm.0000000000000137] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The objectives of this study were to determine the accuracy of smoking cessation self-reports by cardiac patients who participated in a smoking cessation program, and to determine which patient characteristics are associated with an inaccurate self-report during a follow-up interview 12 months after the start of the program. METHODS Smoking cessation self-reports (point prevalence abstinence) were validated against salivary cotinine levels. Using χ analyses, patients who reported accurately being a nonsmoker were compared with those who reported inaccurately being a nonsmoker (biochemically verified as smokers) on factors the literature has indicated to be associated with inaccurate self-report in smoking. Potential predictors of inaccurate self-report of smoking (P ≤ 0.20 in univariate analyses) were subsequently tested in a multivariate logistic regression analysis. RESULTS Of the 95 patients tested, almost 25% inaccurately reported having quit smoking at a cutoff of 10-ng/mL cotinine in saliva. The data show more underreporting of smoking among patients who received a face-to-face counseling intervention and among patients with an intermediate education level. There was significantly less underreporting among patients characterized as having a Type D personality. CONCLUSIONS These findings suggest that underreporting of smoking status in cardiac patients who participate in a smoking cessation program is high, especially in those who receive intensive face-to-face counseling. Having a Type D personality seems to be a protective factor, whereas having an intermediate level of education is a risk factor for inaccurate reporting. Biochemical validation in high-risk populations is highly needed, ideally accompanied by alternative forms of verification. Optimal validation testing in smoking cessation studies of cardiac patients is difficult because of high refusal rates, no-show, and organizational difficulties.
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Baker TB, Piper ME, Stein JH, Smith SS, Bolt DM, Fraser DL, Fiore MC. Effects of Nicotine Patch vs Varenicline vs Combination Nicotine Replacement Therapy on Smoking Cessation at 26 Weeks: A Randomized Clinical Trial. JAMA 2016; 315:371-9. [PMID: 26813210 PMCID: PMC4824537 DOI: 10.1001/jama.2015.19284] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE Smoking cessation medications are routinely used in health care; it is vital to identify medications that most effectively treat this leading cause of preventable mortality. OBJECTIVE To compare the efficacies of varenicline, combination nicotine replacement therapy (C-NRT), and the nicotine patch for 26-week quit rates. DESIGN, SETTING, AND PARTICIPANTS Three-group randomized intention-to-treat clinical trial occurring from May 2012 to November 2015 among smokers recruited in the Madison, Wisconsin, and Milwaukee, Wisconsin, communities; 65.5% of smokers offered the study (2687/4102) refused participation prior to randomization. INTERVENTIONS Participants were randomized to one of three 12-week open-label smoking cessation pharmacotherapy groups: (1) nicotine patch only (n = 241); (2) varenicline only (including 1 prequit week; n = 424); and (3) C-NRT (nicotine patch + nicotine lozenge; n = 421). Six counseling sessions were offered. MAIN OUTCOMES AND MEASURES The primary outcome was carbon monoxide-confirmed self-reported 7-day point-prevalence abstinence at 26 weeks. Secondary outcomes were carbon monoxide-confirmed self-reported initial abstinence, prolonged abstinence at 26 weeks, and point-prevalence abstinence at weeks 4, 12, and 52. RESULTS Among 1086 smokers randomized (52% women; 67% white; mean age, 48 years; mean of 17 cigarettes smoked per day), 917 (84%) provided 12-month follow-up data. Treatments did not differ on any abstinence outcome measure at 26 or 52 weeks, including point-prevalence abstinence at 26 weeks (nicotine patch, 22.8% [55/241]; varenicline, 23.6% [100/424]; and C-NRT, 26.8% [113/421]) or at 52 weeks (nicotine patch, 20.8% [50/241]; varenicline, 19.1% [81/424]; and C-NRT, 20.2% [85/421]). At 26 weeks, the risk differences for abstinence were, for patch vs varenicline, -0.76% (95% CI, -7.4% to 5.9%); for patch vs C-NRT, -4.0% (95% CI, -10.8% to 2.8%); and for varenicline vs C-NRT, -3.3% (95% CI, -9.1% to 2.6%). All medications were well tolerated, but varenicline produced more frequent adverse events than did the nicotine patch for vivid dreams, insomnia, nausea, constipation, sleepiness, and indigestion. CONCLUSIONS AND RELEVANCE Among adults motivated to quit smoking, 12 weeks of open-label treatment with nicotine patch, varenicline, or C-NRT produced no significant differences in biochemically confirmed rates of smoking abstinence at 26 weeks. The results raise questions about the relative effectiveness of intense smoking pharmacotherapies. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT01553084.
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Affiliation(s)
- Timothy B. Baker
- University of Wisconsin School of Medicine and Public Health, Center for Tobacco Research and Intervention, 1930 Monroe St., Suite 200, Madison, WI 53711
- University of Wisconsin School of Medicine and Public Health, Department of Medicine, 1685 Highland Avenue, 5158 Medical Foundation Centennial Building, Madison, WI 53705
| | - Megan E. Piper
- University of Wisconsin School of Medicine and Public Health, Center for Tobacco Research and Intervention, 1930 Monroe St., Suite 200, Madison, WI 53711
- University of Wisconsin School of Medicine and Public Health, Department of Medicine, 1685 Highland Avenue, 5158 Medical Foundation Centennial Building, Madison, WI 53705
| | - James H. Stein
- University of Wisconsin School of Medicine and Public Health, Department of Medicine, Cardiovascular Medicine, 600 Highland Avenue, Madison, WI 53792
| | - Stevens S. Smith
- University of Wisconsin School of Medicine and Public Health, Center for Tobacco Research and Intervention, 1930 Monroe St., Suite 200, Madison, WI 53711
- University of Wisconsin School of Medicine and Public Health, Department of Medicine, 1685 Highland Avenue, 5158 Medical Foundation Centennial Building, Madison, WI 53705
| | - Daniel M. Bolt
- University of Wisconsin-Madison, Educational Psychology, 1025 West Johnson Street, Madison, WI 53706
| | - David L. Fraser
- University of Wisconsin School of Medicine and Public Health, Center for Tobacco Research and Intervention, 1930 Monroe St., Suite 200, Madison, WI 53711
| | - Michael C. Fiore
- University of Wisconsin School of Medicine and Public Health, Center for Tobacco Research and Intervention, 1930 Monroe St., Suite 200, Madison, WI 53711
- University of Wisconsin School of Medicine and Public Health, Department of Medicine, 1685 Highland Avenue, 5158 Medical Foundation Centennial Building, Madison, WI 53705
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Morgan H, Hoddinott P, Thomson G, Crossland N, Farrar S, Yi D, Hislop J, Moran VH, MacLennan G, Dombrowski SU, Rothnie K, Stewart F, Bauld L, Ludbrook A, Dykes F, Sniehotta FF, Tappin D, Campbell M. Benefits of Incentives for Breastfeeding and Smoking cessation in pregnancy (BIBS): a mixed-methods study to inform trial design. Health Technol Assess 2016; 19:1-522, vii-viii. [PMID: 25897655 DOI: 10.3310/hta19300] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Smoking in pregnancy and/or not breastfeeding have considerable negative health outcomes for mother and baby. AIM To understand incentive mechanisms of action for smoking cessation in pregnancy and breastfeeding, develop a taxonomy and identify promising, acceptable and feasible interventions to inform trial design. DESIGN Evidence syntheses, primary qualitative survey, and discrete choice experiment (DCE) research using multidisciplinary, mixed methods. Two mother-and-baby groups in disadvantaged areas collaborated throughout. SETTING UK. PARTICIPANTS The qualitative study included 88 pregnant women/recent mothers/partners, 53 service providers, 24 experts/decision-makers and 63 conference attendees. The surveys included 1144 members of the general public and 497 health professionals. The DCE study included 320 women with a history of smoking. METHODS (1) Evidence syntheses: incentive effectiveness (including meta-analysis and effect size estimates), delivery processes, barriers to and facilitators of smoking cessation in pregnancy and/or breastfeeding, scoping review of incentives for lifestyle behaviours; (2) qualitative research: grounded theory to understand incentive mechanisms of action and a framework approach for trial design; (3) survey: multivariable ordered logit models; (4) DCE: conditional logit regression and the log-likelihood ratio test. RESULTS Out of 1469 smoking cessation and 5408 breastfeeding multicomponent studies identified, 23 smoking cessation and 19 breastfeeding studies were included in the review. Vouchers contingent on biochemically proven smoking cessation in pregnancy were effective, with a relative risk of 2.58 (95% confidence interval 1.63 to 4.07) compared with non-contingent incentives for participation (four studies, 344 participants). Effects continued until 3 months post partum. Inconclusive effects were found for breastfeeding incentives compared with no/smaller incentives (13 studies) but provider commitment contracts for breastfeeding show promise. Intervention intensity is a possible confounder. The acceptability of seven promising incentives was mixed. Women (for vouchers) and those with a lower level of education (except for breastfeeding incentives) were more likely to disagree. Those aged ≤ 44 years and ethnic minority groups were more likely to agree. Agreement was greatest for a free breast pump and least for vouchers for breastfeeding. Universal incentives were preferred to those targeting low-income women. Initial daily text/telephone support, a quitting pal, vouchers for > £20.00 per month and values up to £80.00 increase the likelihood of smoking cessation. Doctors disagreed with provider incentives. A 'ladder' logic model emerged through data synthesis and had face validity with service users. It combined an incentive typology and behaviour change taxonomy. Autonomy and well-being matter. Personal difficulties, emotions, socialising and attitudes of others are challenges to climbing a metaphorical 'ladder' towards smoking cessation and breastfeeding. Incentive interventions provide opportunity 'rungs' to help, including regular skilled flexible support, a pal, setting goals, monitoring and outcome verification. Individually tailored and non-judgemental continuity of care can bolster women's capabilities to succeed. Rigid, prescriptive interventions placing the onus on women to behave 'healthily' risk them feeling pressurised and failing. To avoid 'losing face', women may disengage. LIMITATIONS Included studies were heterogeneous and of variable quality, limiting the assessment of incentive effectiveness. No cost-effectiveness data were reported. In surveys, selection bias and confounding are possible. The validity and utility of the ladder logic model requires evaluation with more diverse samples of the target population. CONCLUSIONS Incentives provided with other tailored components show promise but reach is a concern. Formal evaluation is recommended. Collaborative service-user involvement is important. STUDY REGISTRATION This study is registered as PROSPERO CRD42012001980. FUNDING The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
- Heather Morgan
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Pat Hoddinott
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Gill Thomson
- Maternal and Infant Nutrition and Nurture Unit, University of Central Lancashire, Preston, UK
| | - Nicola Crossland
- Maternal and Infant Nutrition and Nurture Unit, University of Central Lancashire, Preston, UK
| | - Shelley Farrar
- Health Economics Research Unit, University of Aberdeen, Aberdeen, UK
| | - Deokhee Yi
- Health Economics Research Unit, University of Aberdeen, Aberdeen, UK
| | - Jenni Hislop
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Victoria Hall Moran
- Maternal and Infant Nutrition and Nurture Unit, University of Central Lancashire, Preston, UK
| | - Graeme MacLennan
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | | | - Kieran Rothnie
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Fiona Stewart
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Linda Bauld
- The Institute of Social Marketing, University of Stirling, Stirling, UK
| | - Anne Ludbrook
- Health Economics Research Unit, University of Aberdeen, Aberdeen, UK
| | - Fiona Dykes
- Maternal and Infant Nutrition and Nurture Unit, University of Central Lancashire, Preston, UK
| | - Falko F Sniehotta
- Institute of Health and Society, University of Newcastle, Newcastle, UK
| | - David Tappin
- Perinatal Epidemiology and Child Health Unit, School of Medicine, University of Glasgow, Glasgow, UK
| | - Marion Campbell
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
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Effectiveness of video- versus text-based computer-tailored smoking cessation interventions among smokers after one year. Prev Med 2016; 82:42-50. [PMID: 26577867 DOI: 10.1016/j.ypmed.2015.11.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 10/23/2015] [Accepted: 11/04/2015] [Indexed: 11/21/2022]
Abstract
BACKGROUND In western countries, smoking prevalence rates are high among smokers unmotivated to quit and those with a lower socioeconomic status (LSES). Multiple computer tailoring and the use of audio-visual aids may improve such interventions and increase cessation in LSES smokers. This study assessed the 12-month effectiveness of a video- and text-based computer-tailored intervention. METHODS A randomized controlled trial in the Netherlands was used in which smokers were allocated to the video-based condition (VC) (N=670), the text-based condition (TC) (N=708) or the control condition (CC) (brief generic text advice) (N=721). After 12months, self-reported prolonged abstinence was assessed and biochemically verified in respondents indicating to have quit smoking. Three analysis strategies were used to assess the effects: (1) multiple imputation (MI); (2) intention-to-treat (ITT); (3) complete case analysis (CC). RESULTS VC was more effective in prolonged abstinence compared to CC (odds ratio (OR)=1.90, p=.005) and the text-based condition (OR=1.71, p=.01). VC was furthermore more effective than TC. No differences were found for SES and motivational levels. Results were similar when using ITT and CC. For our secondary outcome seven-day point prevalence abstinence; however, neither VC (OR=1.17, p=.34) or TC (OR=0.91, p=.52) outperformed the CC. CONCLUSION The video-based computer-tailored intervention was effective in obtaining substantial long-term abstinence compared to the text-based version and a brief generic text advice.
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Alberg AJ, Worley ML, Tooze JA, Hatcher JL, Carpenter MJ, Day TA, Sullivan CA, Warren GW, Sterba KR, Weaver KE. The Validity of Self-reported Recent Smoking in Head and Neck Cancer Surgical Patients. Otolaryngol Head Neck Surg 2015. [PMID: 26195573 DOI: 10.1177/0194599815594385] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE In cancer patients, cigarette smoking causes poorer response to treatment, treatment toxicity, increased risk of recurrence, higher surgical complication rates, and poorer overall survival. As such a significant determinant of patient prognosis, accurate classification of current smoking status is important. Self-reported smoking status may lead to misclassification if patients conceal their true status. The purpose of this study was to assess the validity of self-reported tobacco use during the previous 48 hours in head and neck cancer patients on the day of surgery. STUDY DESIGN Cross-sectional. SETTING Two academic medical centers in the southeastern United States. SUBJECTS AND METHODS On the day of surgery, 108 head and neck cancer patients completed a survey asking about tobacco use during the past 48 hours and had semi-quantitative levels of urinary cotinine measured to biochemically validate self-reported recent smoking. RESULTS Self-reported smoking yielded a sensitivity of 60.9% (95% CI, 45.4%-74.9%) and a specificity of 98.4% (95% CI, 91.3%-100.0%). The sensitivity increased to 76.1% (95% CI, 61.2%-87.4%) when allowing for the possibility that exposure to secondhand smoke or use of nicotine-containing products could have caused a positive cotinine test. CONCLUSION In this patient population, self-reported recent smoking yielded a high (39%) proportion of false-negatives, and even 24% remained false-negatives after allowing for other sources of nicotine exposure. This magnitude of underreporting combined with the importance of tobacco use to patient prognosis supports the need for routinely biochemically verifying recent tobacco use in self-reported nonsmokers within the clinical setting.
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Affiliation(s)
- Anthony J Alberg
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina, USA.,Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Mitchell L Worley
- Department of Otolaryngology-Head and Neck Surgery, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA.,Wake Forest Comprehensive Cancer Center, Wake Forest University, Winston Salem, North Carolina, USA
| | - Janet A Tooze
- Wake Forest Comprehensive Cancer Center, Wake Forest University, Winston Salem, North Carolina, USA.,Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
| | - Jeanne L Hatcher
- Department of Otolaryngology, Emory University, Atlanta, Georgia, USA
| | - Matthew J Carpenter
- Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA.,Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Terry A Day
- Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA.,Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Christopher A Sullivan
- Department of Otolaryngology-Head and Neck Surgery, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA.,Wake Forest Comprehensive Cancer Center, Wake Forest University, Winston Salem, North Carolina, USA
| | - Graham W Warren
- Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA.,Department of Radiation Oncology, Medical University of South Carolina, Charleston, South Carolina, USA.,Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Katherine R Sterba
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina, USA.,Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Kathryn E Weaver
- Wake Forest Comprehensive Cancer Center, Wake Forest University, Winston Salem, North Carolina, USA.,Department of Social Sciences and Public Policy, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
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Beyond cigarettes per day. A genome-wide association study of the biomarker carbon monoxide. Ann Am Thorac Soc 2015; 11:1003-10. [PMID: 25072098 DOI: 10.1513/annalsats.201401-010oc] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
RATIONALE The CHRNA5-CHRNA3-CHRNB4 locus is associated with self-reported smoking behavior and also harbors the strongest genetic associations with chronic obstructive pulmonary disease (COPD) and lung cancer. Because the associations with lung disease remain after adjustment for self-reported smoking behaviors, it has been asserted that CHRNA5-CHRNA3-CHRNB4 variants increase COPD and lung cancer susceptibility independently of their effects on smoking. OBJECTIVES To compare the genetic associations of exhaled carbon monoxide (CO), a biomarker of current cigarette exposure, with self-reported smoking behaviors. METHODS A total of 1,521 European American and 247 African American current smokers recruited into smoking cessation studies were assessed for CO at intake before smoking cessation. DNA samples were genotyped using the Illumina Omni2.5 microarray. Genetic associations with CO and smoking behaviors (cigarettes smoked per day, Fagerstrom test for nicotine dependence) were studied. MEASUREMENTS AND MAIN RESULTS Variants in the CHRNA5-CHRNA3-CHRNB4 locus, including rs16969968, a nonsynonymous variant in CHRNA5, are genomewide association study-significantly associated with CO (β = 2.66; 95% confidence interval [CI], 1.74-3.58; P = 1.65 × 10(-8)), and this association remains strong after adjusting for smoking behavior (β = 2.18; 95% CI, 1.32-3.04; P = 7.47 × 10(-7)). The correlation between CO and cigarettes per day is statistically significantly lower (z = 3.43; P = 6.07 × 10(-4)) in African Americans (r = 0.14; 95% CI, 0.02-0.26; P = 0.003) than in European-Americans (r = 0.36; 95% CI, 0.31-0.40; P = 0.0001). CONCLUSIONS Exhaled CO, a biomarker that is simple to measure, captures aspects of cigarette smoke exposure in current smokers beyond the number of cigarettes smoked per day. Behavioral measures of smoking are therefore insufficient indices of cigarette smoke exposure, suggesting that genetic associations with COPD or lung cancer that persist after adjusting for self-reported smoking behavior may still reflect genetic effects on smoking exposure.
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Al-Sheyab N, Kheirallah KA, Mangnall LJT, Gallagher R. Agreement between exhaled breath carbon monoxide threshold levels and self-reported cigarette smoking in a sample of male adolescents in Jordan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:841-54. [PMID: 25599375 PMCID: PMC4306896 DOI: 10.3390/ijerph120100841] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Accepted: 01/13/2015] [Indexed: 12/13/2022]
Abstract
This study aimed to measure the percent agreement between Exhaled Breath Carbon Monoxide (eBCO) measure using a piCO+ smokerlyzer® and self-reported cigarette smoking status and to determine the optimal thresholds for definite identification of cigarette smokers of male school students in Jordan. A descriptive, cross sectional, study of a random sample of male adolescents in grades 7 and 8 from four public high schools in Irbid, completed an adaptation of a standardized Arabic-language tobacco smoking questionnaire and an eBCO measure. Sensitivity and specificity of the eBCO were calculated against self-reported cigarette smoking. Participants (n = 439) had a mean age of 12.5 years (SD = 0.50) and 174 (39.9%) reported being an ever smoker of whom 59 (33.9%) reported being a recent (30-day) smoker. The optimal eBCO cut-off point for recent smoking was 4.5 ppm with a sensitivity of 84.7% and specificity of 65.5%. Overall, eBCO can accurately identify recent smokers and distinguish them from non-smokers. The eBCO use enables healthcare professionals and researchers to assess efficacy of smoking cessation and prevention programs without necessarily relying on self-report. Further research is indicated to validate our findings and should be expanded to include females, detailed characteristics of cigarette and waterpipe smoking.
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Affiliation(s)
- Nihaya Al-Sheyab
- Faculty of Nursing, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan.
| | - Khalid A Kheirallah
- Department of Public Health, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan.
| | - Linda J Thomson Mangnall
- Charles Perkins Centre, Faculty of Nursing and Midwifery, the University of Sydney, Sydney 2007, Australia.
| | - Robyn Gallagher
- Faculty of Health, University of Technology, Sydney 2007, Australia.
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Brotman RM, He X, Gajer P, Fadrosh D, Sharma E, Mongodin EF, Ravel J, Glover ED, Rath JM. Association between cigarette smoking and the vaginal microbiota: a pilot study. BMC Infect Dis 2014; 14:471. [PMID: 25169082 PMCID: PMC4161850 DOI: 10.1186/1471-2334-14-471] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 08/18/2014] [Indexed: 12/02/2022] Open
Abstract
Background Smoking has been identified in observational studies as a risk factor for bacterial vaginosis (BV), a condition defined in part by decimation of Lactobacillus spp. The anti-estrogenic effect of smoking and trace amounts of benzo[a]pyrene diol epoxide (BPDE) may predispose women to BV. BPDE increases bacteriophage induction in Lactobacillus spp. and is found in the vaginal secretions of smokers. We compared the vaginal microbiota between smokers and non-smokers and followed microbiota changes in a smoking cessation pilot study. Methods In 2010–2011, 20 smokers and 20 non-smokers were recruited to a cross-sectional study (Phase A) and 9 smokers were enrolled and followed for a 12-week smoking cessation program (Phase B). Phase B included weekly behavioral counseling and nicotine patches to encourage smoking cessation. In both phases, participants self-collected mid-vaginal swabs (daily, Phase B) and completed behavioral surveys. Vaginal bacterial composition was characterized by pyrosequencing of barcoded 16S rRNA genes (V1-V3 regions). Vaginal smears were assigned Nugent Gram stain scores. Smoking status was evaluated (weekly, Phase B) using the semi-quantitative NicAlert® saliva cotinine test and carbon monoxide (CO) exhalation. Results In phase A, there was a significant trend for increasing saliva cotinine and CO exhalation with elevated Nugent scores (P value <0.005). Vaginal microbiota clustered into three community state types (CSTs); two dominated by Lactobacillus (L. iners, L. crispatus), and one lacking significant numbers of Lactobacillus spp. and characterized by anaerobes (termed CST-IV). Women who were observed in the low-Lactobacillus CST-IV state were 25-fold more likely to be smokers than those dominated by L. crispatus (aOR: 25.61, 95 % CI: 1.03-636.61). Four women completed Phase B. One of three who entered smoking cessation with high Nugent scores demonstrated a switch from CST-IV to a L.iners-dominated profile with a concomitant drop in Nugent scores which coincided with completion of nicotine patches. The other two women fluctuated between CST-IV and L. iners-dominated CSTs. The fourth woman had low Nugent scores with L. crispatus-dominated CSTs throughout. Conclusion Smokers had a lower proportion of vaginal Lactobacillus spp. compared to non-smokers. Smoking cessation should be investigated as an adjunct to reducing recurrent BV. Larger studies are needed to confirm these findings. Electronic supplementary material The online version of this article (doi:10.1186/1471-2334-14-471) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rebecca M Brotman
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA.
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Persistent disparity in prevalence of current cigarette smoking between US adolescents with vs. without a past-year major depressive episode. Community Ment Health J 2014; 50:179-84. [PMID: 24337521 DOI: 10.1007/s10597-013-9676-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/03/2013] [Indexed: 10/25/2022]
Abstract
Using data from annual (2004-2010) cross-sectional surveys of nationally representative samples, the prevalence rate of current (i.e., past 30 days) cigarette smoking among US adolescents age 12-17 years was twice as high for those with vs. without a past-year major depressive episode (PYMDE) (22 vs. 11% in the 2004 survey and 16 vs. 8% in the 2010 survey). The proportion of all US adolescent current smokers who had a PYMDE was about 24% for females; 70-80% of all smokers with PYMDE were females. The persistently higher smoking rates in US adolescents with vs. without PYMDE emphasizes the need for interventions.
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The Accuracy of a Lower-Cost Breath Carbon Monoxide Meter in Distinguishing Smokers from Non-smokers. J Smok Cessat 2014. [DOI: 10.1017/jsc.2013.37] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Abstract
INTRODUCTION Oral fluid collection is noninvasive and easily observed making it an attractive matrix for objectively determining smoking status. Despite large intersubject variability, cotinine oral fluid concentrations correlate with cigarettes smoked per day (CPD). Few studies, however, assessed nicotine markers in oral fluid other than cotinine; other markers might improve smoking status assessment and/or time of last cigarette. MATERIALS AND METHODS Smoking histories and oral fluid specimens were collected from nontreatment-seeking light (1-10 CPD) and heavy smokers (greater than 10 CPD) and from environmentally exposed and nonexposed nonsmokers who provided written informed consent for this Institutional Review Board-approved study. Nicotine, cotinine, hydroxycotinine (OH-cotinine), and norcotinine oral fluid concentrations were quantified by liquid chromatography tandem mass spectrometry. RESULTS Comparison of 1, 3, and 10 ng/mL oral fluid liquid chromatography tandem mass spectrometry cutoffs demonstrated that 10-ng/mL cutoffs performed optimally for cotinine, OH-cotinine, nicotine, and norcotinine identifying 98%, 97%, 88%, and 15% of self-reported smokers; 1% nonsmokers had greater than 10 ng/mL cotinine. No self-reported nonsmoker had greater than 10 ng/mL OH-cotinine, nicotine, or norcotinine. Norcotinine was only identified in smokers' oral fluid. Oral fluid nicotine, cotinine, and nicotine/cotinine ratios were correlated with time of last smoking (r = -0.53, -0.23, and -0.51; P < 0.05) and CPD (r = 0.35, 0.26, and 0.33; P < 0.01), respectively. DISCUSSION AND CONCLUSION OH-cotinine performed slightly better than cotinine for distinguishing smokers from nonsmokers and should be considered as an additional oral fluid smoking indicator. Further research is required to determine if oral fluid norcotinine is a marker for distinguishing light and heavy smokers. Moderate correlations suggest nicotine, cotinine, and nicotine/cotinine ratios may be useful for determining smoking recency in "spot samples" collected during nicotine cessation treatment.
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