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Apata J, Oladele A, Fahimi S, Atanda F, Barsha RAA, Crowley M, Redmond Y, Rose J, Assari S, Cohen JE, Sheikhattari P. Monday-Enhanced CEASE Program for Underserved Ethnic Minorities: a Mixed-Methods Study. J Racial Ethn Health Disparities 2024; 11:885-899. [PMID: 36995578 PMCID: PMC10062259 DOI: 10.1007/s40615-023-01570-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 03/31/2023]
Abstract
BACKGROUND Due to the persistence of tobacco-related health disparities in the U.S., there is a need for innovative strategies to reach the underserved ethnic minority populations who are most at risk. As contemplations for health behavior modification tend to surge on Mondays, we explored the feasibility and effect of a Monday-enhanced smoking cessation program on quitting outcomes in a low-income ethnic minority community. AIMS To compare a Monday-enhanced with a standard Communities Engaged and Advocating for a Smoke-free Environment (CEASE) program and understand the overall experiences of participants in the program. METHODS In this mixed-methods study, affordable housing complexes (n = 4) and a church were randomly assigned either a Monday-enhanced (n = 3) or standard (n = 2) CEASE smoking cessation program. CEASE comprised twelve weekly group counseling sessions facilitated by trained peer motivators plus nicotine replacement products. Participants in the Monday-enhanced arm were encouraged to pick Mondays as a quitting day. Quantitative and qualitative data were collected during the program and at 3-month post-graduation. RESULTS Seventy-seven participants were enrolled in the study arms. In both groups combined, tobacco consumption reduced from 7.7 to 5.6 cig/day (mean reduction, 2.1; 95% CI: 0.9 to 5.1, p = 0.08). Although no significant difference in quit rate was observed between the two arms, more participants completed the follow-up survey in the Monday-enhanced than standard CEASE program [82.4% vs. 36.0%, p < 0.05]. While qualitative data suggested an overall satisfaction of participants with the program, motivation for quitting was higher in the Monday-enhanced CEASE program compared to the standard CEASE program. CONCLUSION The Monday-enhanced program is promising and may enhance participants' engagement and willingness to quit smoking, particularly in low-income ethnic minority communities. Further research should include larger sample sizes to better assess the efficacy of a Monday-enhanced program across diverse populations.
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Affiliation(s)
- Jummai Apata
- Center for Urban Health Disparities Research and Innovation, Morgan State University, Baltimore, MD USA
- The Prevention Sciences Research Center, School of Community Health and Policy, Morgan State University, Baltimore, MD USA
| | - Adewumi Oladele
- Center for Urban Health Disparities Research and Innovation, Morgan State University, Baltimore, MD USA
| | - Saman Fahimi
- Center for Urban Health Disparities Research and Innovation, Morgan State University, Baltimore, MD USA
| | - Fiyinfolu Atanda
- Center for Urban Health Disparities Research and Innovation, Morgan State University, Baltimore, MD USA
| | - Rifath Ara Alam Barsha
- Center for Urban Health Disparities Research and Innovation, Morgan State University, Baltimore, MD USA
| | | | - Yvonne Redmond
- Center for Urban Health Disparities Research and Innovation, Morgan State University, Baltimore, MD USA
| | | | - Shervin Assari
- Department of Family Medicine, Charles R Drew University of Medicine and Science, Los Angeles, CA USA
- Department of Urban Public Health, Charles R Drew University of Medicine and Science, Los Angeles, CA USA
| | - Joanna E. Cohen
- Institute for Global Tobacco Control, Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD USA
| | - Payam Sheikhattari
- Center for Urban Health Disparities Research and Innovation, Morgan State University, Baltimore, MD USA
- The Prevention Sciences Research Center, School of Community Health and Policy, Morgan State University, Baltimore, MD USA
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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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Taylor KL, Williams RM, Li T, Luta G, Smith L, Davis KM, Stanton C, Niaura R, Abrams D, Lobo T, Mandelblatt J, Jayasekera J, Meza R, Jeon J, Cao P, Anderson ED. A Randomized Trial of Telephone-Based Smoking Cessation Treatment in the Lung Cancer Screening Setting. J Natl Cancer Inst 2022; 114:1410-1419. [PMID: 35818122 DOI: 10.1093/jnci/djac127] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/06/2022] [Accepted: 06/28/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Lung cancer mortality is reduced via low-dose CT screening and treatment of early-stage disease. Evidence-based smoking cessation treatment in the lung screening setting can further reduce mortality. We report the results of a cessation trial from the NCI's SCALE collaboration. METHODS Eligible patients (N = 818) aged 50-80 were randomized (May 2017-January 2021) to the Intensive vs. Minimal arms (8 vs. 3 phone sessions plus 8 vs. 2 weeks of nicotine patches, respectively). Bio-verified (primary) and self-reported 7-day abstinence rates were assessed 3-, 6-, and 12-months post-randomization. Logistic regression analyses evaluated the effects of study arm. All statistical tests were two-sided. RESULTS Participants reported 48.0 (SD = 17.2) pack-years and 51.6% were not ready to quit in < 30 days. Self-reported 3-month quit rates were significantly higher in the Intensive vs. Minimal arm (14.3% vs. 7.9%; OR = 2.00, 95% confidence interval [CI] = 1.26,3.18). Bio-verified abstinence was lower but with similar relative differences between arms (9.1% vs. 3.9%; OR = 2.70, 95% CI = 1.44, 5.08). Compared to the Minimal arm, the Intensive arm was more effective among those with greater nicotine dependence (OR = 3.47, 95% CI = 1.55, 7.76), normal screening results (OR = 2.58, 95% CI = 1.32, 5.03), high engagement in counseling (OR = 3.03, 95% CI = 1.50, 6.14) and patch use (OR = 2.81, 95% CI = 1.39, 5.68). Abstinence rates did not differ significantly between arms at 6-months (OR = 1.2, 95% CI = 0.68, 2.11) or 12-months (OR = 1.4, 95% CI = 0.82, 2.42). CONCLUSIONS Delivering intensive telephone counseling and nicotine replacement with lung screening is an effective strategy to increase short-term smoking cessation. Methods to maintain short-term effects are needed. Even with modest quit rates, integrating cessation treatment into lung screening programs may have a large impact on tobacco-related mortality.
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Affiliation(s)
- Kathryn L Taylor
- Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Randi M Williams
- Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Tengfei Li
- Department of Biostatistics, Bioinformatics, and Biomathematics, Georgetown University Medical Center, Washington, DC, USA
| | - George Luta
- Department of Biostatistics, Bioinformatics, and Biomathematics, Georgetown University Medical Center, Washington, DC, USA
| | - Laney Smith
- Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Kimberly M Davis
- Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | | | - Raymond Niaura
- School of Global Public Health, New York University, NY, NY, USA
| | - David Abrams
- School of Global Public Health, New York University, NY, NY, USA
| | - Tania Lobo
- Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Jeanne Mandelblatt
- Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Jinani Jayasekera
- Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Rafael Meza
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA
| | - Jihyoun Jeon
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA
| | - Pianpian Cao
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA
| | - Eric D Anderson
- Department of Pulmonary and Sleep Medicine, Georgetown University Medical Center, Washington, DC, USA
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Bhide P, Timlick E, Kulkarni A, Gudi A, Shah A, Homburg R, Acharya G. Effect of cigarette smoking on serum anti-Mullerian hormone and antral follicle count in women seeking fertility treatment: a prospective cross-sectional study. BMJ Open 2022; 12:e049646. [PMID: 35361635 PMCID: PMC8971761 DOI: 10.1136/bmjopen-2021-049646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES The relationship between smoking and ovarian reserve markers is inconclusive. The primary objective of our study was to assess the effect of cigarette smoking on the quantitative ovarian reserve parameters, serum anti-Mullerian hormone (AMH) and antral follicle count (AFC) as relevant to prediction of fertility outcomes in women seeking fertility treatment. Our secondary aims were to validate self-reported smoking behaviour using biomarkers and evaluate the association between biomarkers of ovarian reserve (serum AMH and AFC) with biomarkers of smoking exposure (breath carbon monoxide (CO) and urine cotinine levels). DESIGN Prospective, cross-sectional study. SETTING Single tertiary care fertility centre. PARTICIPANTS Women ≤35 years seeking fertility treatment. PRIMARY OUTCOME MEASURES Serum AMH and AFC. RESULTS Significant differences were found among current smokers, ex-smokers and never smokers for breath CO (F(2,97)=33.32, p<0.0001) and urine cotinine levels (p<0.001). However, no significant differences were found either for serum AMH (F(2,91)=1.19, p=0.309) or total AFC (F(2,81)=0.403, p=0.670) among the three groups. There was no significant correlation between pack years of smoking and serum AMH (r=-0.212, n=23, p=0.166) or total AFC (r=-0.276, n=19, p=0.126). No significant correlation was demonstrated between breath CO and serum AMH (r=0.082, n=94, p=0.216) or total AFC (r=0.096, n=83, p=0.195). Similarly, no significant correlation was demonstrated between urine cotinine levels and serum AMH (r=0.146, n=83, p=0.095) or total AFC (r=-0.027, n=77, p=0.386). CONCLUSION We did not find a statistically significant difference in quantitative ovarian reserve markers between current smokers, ex-smokers and never smokers which would be clinically meaningful in our study population. We confirmed that self-reported smoking correlates well with quantitatively measured biomarkers of smoking. This validated the self-reported comparison groups to ensure a valid comparison of outcome measures. There was no significant association between biomarkers of smoking and biomarkers of ovarian reserve. We were also unable to demonstrate a correlation between the lifetime smoking exposure and ovarian reserve.
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Affiliation(s)
- Priya Bhide
- Faculty of Health Sciences, UiT The Arctic University of Norway, Tromso, Norway
- Homerton Fertility Centre, Homerton University Hospital, London, UK
| | | | - Abhijit Kulkarni
- Homerton Fertility Centre, Homerton University Hospital, London, UK
| | - Anil Gudi
- Homerton Fertility Centre, Homerton University Hospital, London, UK
| | - Amit Shah
- Homerton Fertility Centre, Homerton University Hospital, London, UK
| | - Roy Homburg
- Homerton Fertility Centre, Homerton University Hospital, London, UK
| | - Ganesh Acharya
- Faculty of Health Sciences, UiT The Arctic University of Norway, Tromso, Norway
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
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Nagao T, Fukuta J, Hanioka T, Nakayama Y, Warnakulasuriya S, Sasaki T, Shiota M, Ohno K, Ishigaki Y, Satomura K, Hashimoto S, Goto M, Seto K. A multicentre tobacco cessation intervention study in the dental setting in Japan. Int Dent J 2021; 72:123-132. [PMID: 33743994 PMCID: PMC9275313 DOI: 10.1016/j.identj.2021.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/08/2021] [Indexed: 12/23/2022] Open
Abstract
Objective The objective of this study was to assess the efficacy of a tobacco cessation intervention conducted by different dental specialists directed at a group of patients with tobacco-related oral diseases or undergoing implant treatment. Methods The study design was a multicentre, nonrandomized prospective cohort study to examine the effects of smoking cessation. The target patients were current smokers (aged ≥20 years) with an oral potentially malignant disorder or periodontitis and those seeking dental implants. A total of 74 patients were enrolled in the study. All dental specialists who participated in the trial completed an e-learning Japan Smoking Cessation Training Outreach Project (J-STOP) tobacco cessation education programme. Nicotine dependence was evaluated by the Fagerstrom Test for Nicotine Dependence. Cessation status was verified biochemically by measurement of salivary cotinine or exhaled carbon monoxide. Tobacco cessation intervention was implemented for 8 weeks with or without nicotine replacement therapy with follow-up for 12 months. Results A total of 61 patients agreed to the tobacco cessation intervention. The mean biochemically confirmed tobacco abstinence rate was 37.7% at month 3, 34.4% at month 6, and 32.8% at month 12. The highest rate of biochemically confirmed tobacco abstinence at month 12 was among patients receiving implant treatment (42.9%) followed by patients with oral potentially malignant disorder (37.1%), and those with periodontitis (21.1%). Conclusion This interventional study demonstrates the challenges encountered and the feasibility of tobacco cessation intervention among Japanese patients attending dental specialists who had completed an e-learning course on smoking cessation. Making tobacco cessation an integral part of patient management by dental specialists requires further evaluation.
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Affiliation(s)
- Toru Nagao
- Department of Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University, Nagoya, Japan.
| | - Jinichi Fukuta
- Department of Oral and Maxillofacial Surgery, Shin-Yurigaoka General Hospital, Kawasaki, Japan
| | - Takashi Hanioka
- Department of Preventive and Public Health Dentistry, Fukuoka Dental College, Fukuoka, Japan
| | - Yohei Nakayama
- Department of Periodontology and Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
| | - Saman Warnakulasuriya
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, WHO Collaborating Centre for Oral Cancer, London, UK
| | - Tadaaki Sasaki
- Department of Oral and Maxillofacial Surgery, Utsunomiya Memorial Hospital, Utsunomiya, Japan
| | - Makoto Shiota
- Department of Oral Implantology and Regenerative Medicine, Graduate School of Tokyo Medical and Dental University, Tokyo, Japan
| | - Keisuke Ohno
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Suidobashi Hospital, Tokyo, Japan
| | - Yoshiki Ishigaki
- Department of Oral and Maxillofacial Surgery, The Nippon Dental University Hospital, Tokyo, Japan
| | - Kazuhito Satomura
- Department of Oral Medicine and Stomatology, School of Dental Medicine, Tsurumi University, Yokohama, Japan
| | - Shuji Hashimoto
- Department of Hygiene, Faculty of Medicine, Fujita Health University, Toyoake, Japan
| | - Mitsuo Goto
- Department of Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Kanichi Seto
- Oral Cancer Center, Southern Tohoku General Hospital, Koriyama, Japan
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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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Hughes JR, Peters EN, Callas PW, Peasley-Miklus C, Oga E, Etter JF, Morley N. Withdrawal Symptoms From E-Cigarette Abstinence Among Former Smokers: A Pre-Post Clinical Trial. Nicotine Tob Res 2020; 22:734-739. [PMID: 31352486 DOI: 10.1093/ntr/ntz129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/26/2019] [Indexed: 12/14/2022]
Abstract
INTRODUCTION The major aim of this study was to test whether abstinence from e-cigarettes causes withdrawal symptoms in former smokers. METHODS We conducted an unblinded, within-participants, pre-post clinical trial in which 109 former smokers who were current daily electronic cigarette (e-cigarette) users used their own e-cigarette for 7 days followed by 6 days of biologically confirmed abstinence engendered via an escalating contingency payment system. Participants monitored symptoms of nicotine withdrawal daily via an Interactive Voice Response system. They also attended three laboratory visits per week for carbon monoxide and cotinine testing to verify abstinence. RESULTS Half of participants completely abstained for a week. All the Diagnostic and Statistical Manual, Fifth Edition (DSM-5) tobacco withdrawal symptoms, craving for e-cigarettes, craving for tobacco cigarettes, and the four possible new withdrawal symptoms (anhedonia, impulsivity, mood swings, and positive affect) increased during abstinence. Weight increased and heart rate decreased with abstinence. Symptoms showed the prototypical inverted U time pattern of a withdrawal state. The magnitude of withdrawal appeared to be somewhat less than that in a prior study of abstinent daily tobacco cigarette smokers. More severe withdrawal on the first 2 days of abstinence did not predict abstinence on the last day of the study. CONCLUSIONS Former smokers who are daily e-cigarette users transfer physical dependence on tobacco cigarettes to dependence on e-cigarettes. The severity of withdrawal from e-cigarettes appears to be only somewhat less than that from daily tobacco cigarette use. Replication tests that include placebo controls, testing for pharmacological specificity, and including never-smokers, non-daily e-cigarette users and dual users are indicated. IMPLICATIONS Our results indicate e-cigarettes can maintain physical dependence. This adverse effect should be included in any risk vs. benefit calculation. Also, potential and current e-cigarette users should be informed that abrupt cessation of e-cigarettes can cause withdrawal symptoms. TRIAL REGISTRATION NCT02825459.
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Affiliation(s)
- John R Hughes
- Department of Psychiatry, Vermont Center for Behavior and Health, University of Vermont, Burlington, VT.,Department of Psychological Science, Vermont Center for Behavior and Health, University of Vermont, Burlington, VT
| | - Erica N Peters
- Battelle Public Health Center for Tobacco Research, Baltimore, MD
| | - Peter W Callas
- Medical Biostatistics, University of Vermont, Burlington, VT
| | - Catherine Peasley-Miklus
- Department of Psychiatry, Vermont Center for Behavior and Health, University of Vermont, Burlington, VT.,Department of Psychological Science, Vermont Center for Behavior and Health, University of Vermont, Burlington, VT
| | - Emmanuel Oga
- Battelle Public Health Center for Tobacco Research, Baltimore, MD
| | - Jean-Francois Etter
- Institute of Global Health, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Nicholas Morley
- Department of Psychiatry, Vermont Center for Behavior and Health, University of Vermont, Burlington, VT.,Department of Psychological Science, Vermont Center for Behavior and Health, University of Vermont, Burlington, VT
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8
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Li X, Hartwell KJ, Henderson S, Badran BW, Brady KT, George MS. Two weeks of image-guided left dorsolateral prefrontal cortex repetitive transcranial magnetic stimulation improves smoking cessation: A double-blind, sham-controlled, randomized clinical trial. Brain Stimul 2020; 13:1271-1279. [PMID: 32534252 PMCID: PMC7494651 DOI: 10.1016/j.brs.2020.06.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 05/01/2020] [Accepted: 06/04/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Previous studies have found that repetitive transcranial magnetic stimulation (rTMS) to the left dorsal lateral prefrontal cortex (LDLPFC) transiently reduces smoking craving, decreases cigarette consumption, and increases abstinence rates. OBJECTIVE We investigated whether 10 daily MRI-guided rTMS sessions over two weeks to the LDLPFC paired with craving cues could reduce cigarette consumption and induce smoking cessation. METHODS We enrolled 42 treatment-seeking nicotine-dependent smokers (≥10 cigarettes per day) in a randomized, double-blind, sham-controlled trial. Participants received 10 daily sessions over 2 weeks of either active or sham MRI-guided rTMS (10Hz, 3000 pulses each session) to the LDLPFC concurrently with video smoking cues. The primary outcome was a reduction in biochemically confirmed cigarette consumption with a secondary outcome of abstinence on the target quit date. We also recorded cue-induced craving and withdrawal symptoms. RESULTS Compared to sham (n = 17), participants receiving active rTMS (n = 21) smoked significantly fewer cigarettes per day during the 2-week treatment (mean [SD], 13.73[9.18] vs. 11.06[9.29], P < .005) and at 1-month follow-up (12.78[9.53] vs. 7.93[7.24], P < .001). Active rTMS participants were also more likely to quit by their target quit rate (23.81%vs. 0%, OR 11.67, 90% CL, 0.96-141.32, x2 = 4.66, P = .031). Furthermore, rTMS significantly reduced mean craving throughout the treatments and at follow-up (29.93[13.12] vs. 25.01[14.45], P < .001). Interestingly across the active treatment sample, more lateral coil location was associated with more success in quitting (-43.43[0.40] vs. -41.79[2.24], P < .013). CONCLUSIONS Daily MRI-guided rTMS to the LDLPFC for 10 days reduces cigarette consumption and cued craving for up to one month and also increases the likelihood of smoking cessation. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT02401672.
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Affiliation(s)
- Xingbao Li
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA; Center for Biomedical Imaging, Medical University of South Carolina, Charleston, SC, 29425, USA.
| | - Karen J Hartwell
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA; Ralph H. Johnson VA Medical Center, Charleston, SC, 29401, USA
| | - Scott Henderson
- Center for Biomedical Imaging, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Bashar W Badran
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Kathleen T Brady
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA; Ralph H. Johnson VA Medical Center, Charleston, SC, 29401, USA
| | - Mark S George
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA; Ralph H. Johnson VA Medical Center, Charleston, SC, 29401, USA
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9
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Sierra MA, Li Q, Pushalkar S, Paul B, Sandoval TA, Kamer AR, Corby P, Guo Y, Ruff RR, Alekseyenko AV, Li X, Saxena D. The Influences of Bioinformatics Tools and Reference Databases in Analyzing the Human Oral Microbial Community. Genes (Basel) 2020; 11:genes11080878. [PMID: 32756341 PMCID: PMC7465726 DOI: 10.3390/genes11080878] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/11/2020] [Accepted: 07/29/2020] [Indexed: 12/20/2022] Open
Abstract
There is currently no criterion to select appropriate bioinformatics tools and reference databases for analysis of 16S rRNA amplicon data in the human oral microbiome. Our study aims to determine the influence of multiple tools and reference databases on α-diversity measurements and β-diversity comparisons analyzing the human oral microbiome. We compared the results of taxonomical classification by Greengenes, the Human Oral Microbiome Database (HOMD), National Center for Biotechnology Information (NCBI) 16S, SILVA, and the Ribosomal Database Project (RDP) using Quantitative Insights Into Microbial Ecology (QIIME) and the Divisive Amplicon Denoising Algorithm (DADA2). There were 15 phyla present in all of the analyses, four phyla exclusive to certain databases, and different numbers of genera were identified in each database. Common genera found in the oral microbiome, such as Veillonella, Rothia, and Prevotella, are annotated by all databases; however, less common genera, such as Bulleidia and Paludibacter, are only annotated by large databases, such as Greengenes. Our results indicate that using different reference databases in 16S rRNA amplicon data analysis could lead to different taxonomic compositions, especially at genus level. There are a variety of databases available, but there are no defined criteria for data curation and validation of annotations, which can affect the accuracy and reproducibility of results, making it difficult to compare data across studies.
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Affiliation(s)
- Maria A. Sierra
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Qianhao Li
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Smruti Pushalkar
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Bidisha Paul
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Tito A. Sandoval
- Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY 10065, USA;
| | - Angela R. Kamer
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Patricia Corby
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Yuqi Guo
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Ryan Richard Ruff
- Department of Epidemiology & Health Promotion, New York University College of Dentistry, New York, NY 10010, USA;
| | - Alexander V. Alekseyenko
- The Biomedical Informatics Center, Program for Human Microbiome Research, Department of Public Health Sciences, Department of Oral Health Sciences, Department of Healthcare Leadership and Management, Medical University of South Carolina, Charleston, SC 29425, USA;
| | - Xin Li
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Deepak Saxena
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
- S. Arthur Localio Laboratory, Departments of Surgery New York University School of Medicine, New York, NY 10016, USA
- Correspondence: ; Tel.: +1-212-9989256
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10
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Allen S, Petersen A, Harrison K, Tosun N, Cameron J. Response to nicotine following overnight smoking abstinence during short-term progesterone treatment in women. Exp Clin Psychopharmacol 2020; 28:306-316. [PMID: 31464476 PMCID: PMC7048655 DOI: 10.1037/pha0000312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Preclinical and clinical literature suggest that sex hormones impact tobacco use behaviors in women. The goal of this double-blind crossover laboratory study was to examine the effect of oral exogenous progesterone (200 mg twice per day) versus placebo on nicotine response using measures of motor speed and cognitive function in women following overnight smoking abstinence. We hypothesized that increased progesterone would blunt the nicotine response whereby producing less change in motor speed and cognition in response to nicotine exposure. Female smokers, age 18-35, were randomized to participate in two 9-day crossover testing weeks. Participants completed a lab session following overnight abstinence where they were administered nicotine nasal spray and asked to complete measures of immediate memory (IMT), delayed memory (DMT), word recall (WR), and finger tapping speed (FT). After the first 9-day testing week, participants resumed smoking and returned the following month to complete the identical lab session in the crossover condition. Forty-seven women were included in this analysis (n = 47). We found no differences in the magnitude of response for IMT, DMT, and WR between conditions. For FT, women had a blunted response to nicotine during the placebo condition. When examining the association between hormone levels and relative performance, we found increases in DMT, WR, and FT but decreases in IMT during the progesterone condition. We observed differences between progesterone versus placebo in relative change in some measures of nicotine response following overnight abstinence. Future studies are needed to further characterize this response. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Sharon Allen
- Department of Family Medicine & Community Health, University of Minnesota 516 Delaware Street SE, Minneapolis, MN 55455
| | - Ashley Petersen
- Division of Biostatistics, School of Public Health, University of Minnesota 420 Delaware Street SE, Minneapolis, MN 55455
| | - Katherine Harrison
- Department of Family Medicine & Community Health, University of Minnesota 717 Delaware Street SE, Minneapolis, MN 55414
| | - Nicole Tosun
- Department of Family Medicine & Community Health, University of Minnesota 717 Delaware Street SE, Minneapolis, MN 55414
| | - Jacquelyn Cameron
- William Beaumont School of Medicine, Oakland University 586 Pioneer Dr, Rochester, MI 48309
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Harrison K, Petersen A, Tosun N, Crist K, Allen AM, Allene S. Effect of exogenous progesterone administration on cigarette smoking-related symptomology in oral contraceptive users who smoke. Addict Behav 2020; 102:106148. [PMID: 31706140 DOI: 10.1016/j.addbeh.2019.106148] [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] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/02/2019] [Accepted: 09/25/2019] [Indexed: 12/29/2022]
Abstract
Cigarette smoking-related symptomatology (e.g., craving; SRS) is linked to relapse after a quit attempt. SRS varies by menstrual phase, possibly due to variations in sex hormones (e.g., progesterone), though much of the research to-date has relied on observations from the menstrual cycle acting as a proxy for hormone levels. The goal of this study was to examine the effect of exogenous progesterone on SRS during ad libitum smoking and following overnight abstinence. Oral contraceptive users who smoked completed two 9-day crossover testing periods (7 days of ad libitum smoking and 2 days following overnight abstinence) while taking double-blind active/placebo exogenous progesterone. Participants completed questionnaires to measure SRS. The effect of exogenous progesterone and endogenous hormones (progesterone, estradiol, and progesterone-to-estradiol [P/E2] ratio) on SRS was assessed with paired t-tests and linear mixed effect models. Participants (n = 53) were, on average, 24 years old and smoked 11 cigarettes per day. During ad libitum smoking, a doubling of the P/E2 ratio was associated with 0.09 points lower anticipated relief from negative affect (95% confidence interval [CI]: 0.03-0.15 points lower; p = 0.008) and 0.11 points lower psychological reward (95% CI: 0.03-0.18 points lower; p = 0.006). After correction for multiple testing, these associations were not statistically significant: anticipated relief from negative effect (p = 0.10) and psychological reward (p = 0.09). No other significant associations were observed. Although substantial previous literature indicates that progesterone influences SRS, exogenous progesterone administration did not alter SRS here. Additional research is needed to elucidate alternative mechanisms involved in menstrual phase effects on SRS.
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Affiliation(s)
- Katherine Harrison
- Department of Family Medicine & Community Health, Medical School, University of Minnesota, 717 Delaware Street SE, Room 261, Minneapolis, MN 55414, United States.
| | - Ashley Petersen
- Division of Biostatistics, School of Public Health, University of Minnesota, 420 Delaware Street SE, Minneapolis, MN 55455, United States.
| | - Nicole Tosun
- Department of Family Medicine & Community Health, Medical School, University of Minnesota, 717 Delaware Street SE, Room 261, Minneapolis, MN 55414, United States.
| | - Katherine Crist
- Department of Family Medicine & Community Health, Medical School, University of Minnesota, 717 Delaware Street SE, Room 261, Minneapolis, MN 55414, United States.
| | - Alicia M Allen
- Department of Family & Community Medicine, University of Arizona, 3950 South Country Club Drive, Tucson, AZ 85714, United States.
| | - Sharon Allene
- Department of Family Medicine & Community Health, Medical School, University of Minnesota, 717 Delaware Street SE, Room 261, Minneapolis, MN 55414, United States.
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12
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Tosun NL, Fieberg AM, Eberly LE, Harrison KA, Tipp AR, Allen AM, Allen SS. Exogenous progesterone for smoking cessation in men and women: a pilot double-blind, placebo-controlled randomized clinical trial. Addiction 2019; 114:1800-1813. [PMID: 31059177 PMCID: PMC6732045 DOI: 10.1111/add.14645] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/31/2019] [Accepted: 04/22/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIMS In some clinical studies men and women have been found to differ in their ability to quit smoking, perhaps as a result of progesterone. The primary aim of this study was to provide a preliminary test of whether progesterone (PRO), compared with placebo (PBO), was more effective for smoking cessation in men and women. DESIGN Pilot double-blind, placebo-controlled randomized clinical trial. SETTING Minneapolis/St Paul metro area, Minnesota, USA. PARTICIPANTS A total of 216 participants were randomized, including 113 men (18-60 years; PRO = 56, PBO = 57) and 103 women (18-50 years, pre-menopausal with self-reported regular menstrual cycles; PRO = 51, PBO = 52). INTERVENTION Participants were randomized (1 : 1 within sex group) to either PRO (200 mg twice daily) or PBO. Participants were assigned a quit date approximately 7 days after starting medication (luteal phase for women) and were followed for 12 weeks to assess relapse. MEASUREMENTS The primary outcome was self-reported 7-day point prevalence abstinence (PPA) at week 4. Secondary outcomes included 7-day PPA at weeks 8 and 12, prolonged abstinence, continuous abstinence, urine cotinine < 50 ng/ml, expired carbon monoxide ≤ 5 parts per million (p.p.m.) and days to relapse. FINDINGS There was a significant difference in 7-day PPA at week 4 among women [PRO: 18 (35.3%) versus PBO: 9 (17.3%), odds ratio (OR) = 2.61, 95% confidence interval (CI) = 1.04, 6.54, P = 0.041], but not among men [PRO: 13 (23.2%) versus PBO: 12 (21.1%), 1.13 (0.47, 2.76), P = 0.782]. There was some evidence that PRO delayed relapse in women (days to relapse; PRO: 20.5 ± 29.6 versus PBO: 14.3 ± 26.8, P = 0.03) but not in men (PRO: 13.4 ± 25.9 versus PBO: 13.3 ± 23.8, P = 0.69). CONCLUSIONS Oral micronized progesterone may aid smoking cessation in women.
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Affiliation(s)
- Nicole L Tosun
- Department of Family Medicine and Community Health, University of Minnesota, Minneapolis, MN, USA
| | - Ann M Fieberg
- Coordinating Center for Biometric Research, University of Minnesota, Minneapolis, MN, USA
| | - Lynn E Eberly
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, USA
| | - Katherine A Harrison
- Department of Family Medicine and Community Health, University of Minnesota, Minneapolis, MN, USA
| | - Angela R Tipp
- Department of Family Medicine and Community Health, University of Minnesota, Minneapolis, MN, USA
| | - Alicia M Allen
- Department of Family & Community Medicine, University of Arizona, Tucson, AZ, USA
| | - Sharon S Allen
- Department of Family Medicine and Community Health, University of Minnesota, Minneapolis, MN, USA
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13
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Tremblay A, Taghizadeh N, Huang J, Kasowski D, MacEachern P, Burrowes P, Graham AJ, Dickinson JA, Lam SC, Yang H, Koetzler R, Tammemagi M, Taylor K, Bédard ELR. A Randomized Controlled Study of Integrated Smoking Cessation in a Lung Cancer Screening Program. J Thorac Oncol 2019; 14:1528-1537. [PMID: 31077790 DOI: 10.1016/j.jtho.2019.04.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/15/2019] [Accepted: 04/22/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Smoking cessation activities incorporated into lung cancer screening programs have been broadly recommended, but studies to date have not shown increased quit rates associated with cessation programs in this setting. We aimed to determine the effectiveness of smoking cessation counseling in smokers presenting for lung cancer screening. METHODS This study is a randomized control trial of an intensive telephone-based smoking cessation counseling intervention incorporating lung cancer screening results versus usual care (information pamphlet). All active smokers enrolled in the Alberta Lung Cancer Screening Study cohort were randomized on a 1:1 ratio with a primary endpoint of self-reported 30-day abstinence at 12 months. RESULTS A total of 345 active smokers participating in the screening study were randomized to active smoking cessation counseling (n = 171) or control arm (n = 174). Thirty-day smoking abstinence at 12 months post-randomization was noted in 22 of 174 (12.6%) and 24 of 171 (14.0%) of participants in the control and intervention arms, respectively, a 1.4% difference (95% confidence interval: -5.9 to 8.7, p = 0.7). No statistically significant differences in 7-day or point abstinence were noted, nor were differences at 6 months or 24 months. CONCLUSIONS A telephone-based smoking cessation counseling intervention incorporating lung cancer screening results did not result in increased 12-month cessation rates versus written information alone in unselected smokers undergoing lung cancer screening. Routine referral of all current smokers to counseling-based cessation programs may not improve long-term cessation in this patient cohort. Future studies should specifically focus on this subgroup of older long-term smokers to determine the optimal method of integrating smoking cessation with lung cancer screening (clinicaltrials.govNCT02431962).
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Affiliation(s)
- Alain Tremblay
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
| | - Niloofar Taghizadeh
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jane Huang
- AlbertaQuits Helpline, Health Links - Alberta Health Services, Edmonton, Alberta, Canada
| | - Debra Kasowski
- AlbertaQuits Helpline, Health Links - Alberta Health Services, Edmonton, Alberta, Canada
| | - Paul MacEachern
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Paul Burrowes
- Department of Diagnostic Imaging, Foothills Medical Center, Alberta Health Services, Calgary, Alberta, Canada
| | - Andrew J Graham
- Department of Surgery, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - James A Dickinson
- Family Medicine and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Stephen C Lam
- Department of Integrative Oncology, The British Columbia Cancer Research Center, Vancouver, British Columbia, Canada
| | - Huiming Yang
- Population, Public and Indigenous Health, Alberta Health Services, Calgary, Alberta, Canada
| | - Rommy Koetzler
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Martin Tammemagi
- Department of Medical Sciences, Brock University, St. Catharines, Ontario, Canada
| | - Kathryn Taylor
- Department of Oncology, Georgetown University Medical Center, Washington, DC
| | - Eric L R Bédard
- Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
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Allen S, Harrison K, Petersen A, Goodson J. Smoking-related symptomatology in pregnant smokers during ad libitum smoking and following overnight smoking abstinence. BMC Res Notes 2019; 12:473. [PMID: 31370907 PMCID: PMC6669967 DOI: 10.1186/s13104-019-4503-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 07/20/2019] [Indexed: 12/02/2022] Open
Abstract
Objective Current literature suggests there may be a relationship between sex hormones, which dramatically increase during pregnancy, and nicotine use behaviors. We hypothesized that higher progesterone and progesterone:estradiol ratio (P/E2) would be associated with less smoking-related symptomatology (SRS), better mood and fewer cigarettes smoked per day (CPD) during ad libitum smoking and following overnight abstinence in pregnant women. Associations between SRS, mood, smoking behavior and sex hormones were estimated using multiple linear regression with adjustment for CPD and pregnancy trimester. Results There were 35 second trimester and 42 third trimester participants. Participants mean age was 26.2 (SD: 4.1), they smoked 11.3 CPD (SD: 4.4) and the mean nicotine dependence score was 4.94 (SD: 1.98). There were no statistically significant associations between progesterone levels, estradiol levels, or the P/E2 ratio and SRS or mood measures during ad libitum smoking or following overnight abstinence in this sample of pregnant women. Similarly, there were no associations between sex hormone levels and number of CPD smoked during the ad libitum period. Contrary to our hypothesis, we found no significant associations between sex hormones and SRS, mood or smoking behavior in this sample of pregnant women. Trial registration ClinicalTrials.gov (NCT01811225), December 6, 2012
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Affiliation(s)
- Sharon Allen
- Tobacco Research Programs, Department of Family Medicine & Community Health, University of Minnesota, 717 Delaware Street SE, Minneapolis, MN, 55414, USA
| | - Katherine Harrison
- Tobacco Research Programs, Department of Family Medicine & Community Health, University of Minnesota, 717 Delaware Street SE, Minneapolis, MN, 55414, USA.
| | - Ashley Petersen
- Division of Biostatistics, School of Public Health, University of Minnesota, 420 Delaware Street SE, Minneapolis, MN, 55455, USA
| | - Jane Goodson
- Tobacco Research Programs, Department of Family Medicine & Community Health, University of Minnesota, 717 Delaware Street SE, Minneapolis, MN, 55414, USA
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15
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Faro JM, Orvek EA, Blok AC, Nagawa CS, McDonald AJ, Seward G, Houston TK, Kamberi A, Allison JJ, Person SD, Smith BM, Brady K, Grosowsky T, Jacobsen LL, Paine J, Welch JM, Sadasivam RS. Dissemination and Effectiveness of the Peer Marketing and Messaging of a Web-Assisted Tobacco Intervention: Protocol for a Hybrid Effectiveness Trial. JMIR Res Protoc 2019; 8:e14814. [PMID: 31339104 PMCID: PMC6683651 DOI: 10.2196/14814] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/27/2019] [Accepted: 06/27/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Smoking continues to be the leading preventable cause of death. Digital Interventions for Smoking Cessation (DISCs) are health communication programs accessible via the internet and smartphones and allow for greater reach and effectiveness of tobacco cessation programs. DISCs have led to increased 6-month cessation rates while also reaching vulnerable populations. Despite this, the impact of DISCs has been limited and new ways to increase access and effectiveness are needed. OBJECTIVE We are conducting a hybrid effectiveness-dissemination study. We aim to evaluate the effectiveness of a machine learning-based approach (recommender system) for computer-tailored health communication (CTHC) over a standard CTHC system based on quit rates and risk reduction. In addition, this study will assess the dissemination of providing access to a peer recruitment toolset on recruitment rate and variability of the sample. METHODS The Smoker-to-Smoker (S2S) study is a 6-month hybrid effectiveness dissemination trial conducted nationally among English-speaking, current smokers aged ≥18 years. All eligible participants will register for the DISC (Decide2quit) and be randomized to the recommender system CTHC or the standard CTHC, followed by allocation to a peer recruitment toolset group or control group. Primary outcomes will be 7-day point prevalence and risk reduction at the 6-month follow-up. Secondary outcomes include recruitment rate, website engagement, and patient-reported outcomes collected via the 6-month follow-up questionnaire. All primary analyses will be conducted on an intent-to-treat basis. RESULTS The project is funded from 2017 to 2020 by the Patient Centered Outcomes Research Institute. Enrollment was completed in early 2019, and 6-month follow-ups will be completed by late 2019. Preliminary data analysis is currently underway. CONCLUSIONS Conducting a hybrid study with both effectiveness and dissemination hypotheses raises some unique challenges in the study design and analysis. Our study addresses these challenges to test new innovations and increase the effectiveness and reach of DISCs. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/14814.
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Affiliation(s)
- Jamie M Faro
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Elizabeth A Orvek
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Amanda C Blok
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
- Center for Healthcare Organization and Implementation Research, Bedford Veterans Affairs Medical Center, Bedford, MA, United States
| | - Catherine S Nagawa
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Annalise J McDonald
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Gregory Seward
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Thomas K Houston
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Ariana Kamberi
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Jeroan J Allison
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Sharina D Person
- Division of Biostatistics And Health Services Research, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Bridget M Smith
- Center of Innovation for Complex Chronic Healthcare, Spinal Cord Injury Quality Enhancement Research Initiative, Hines VA Medical Center, Chicago, IL, United States
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Evanston, IL, United States
| | | | - Tina Grosowsky
- S2S Patient Panel, Worcester, MA, United States
- Department of Psychiatry, University of Massachusetts Medical School, Worcester, MA, United States
| | | | | | | | - Rajani S Sadasivam
- Division of Health Informatics and Implementation Science, Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
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16
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Herbec A, Brown J, Shahab L, West R. Lessons learned from unsuccessful use of personal carbon monoxide monitors to remotely assess abstinence in a pragmatic trial of a smartphone stop smoking app - A secondary analysis. Addict Behav Rep 2019; 9:100122. [PMID: 31193683 PMCID: PMC6542188 DOI: 10.1016/j.abrep.2018.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 07/02/2018] [Accepted: 07/21/2018] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Verifying abstinence remotely in trials of digital cessation interventions remains a major challenge. This study reports on using personal carbon monoxide (CO) monitors to assess abstinence in a pragmatic trial of a standalone cessation app involving automated recruitment with no researcher contact. METHODS The study involved secondary data analysis of remote CO testing in a randomized trial (ISRCTN10548241) comparing two versions of a cessation app (BupaQuit). Trial participants were adult UK-based smokers interested in quitting, who were recruited online (02/2015-03/2016). Participants were followed-up through the app, email or phone at 4 weeks. Fifty-nine participants reporting not smoking were posted a personal CO monitor with instructions, and emailed two reminders. The monitors required installing software on a Windows PC. Participants were not reimbursed but retained the device. We recorded the proportion of CO tests returned, test results, self-reported ease of use, correct use, acceptability, and reasons for missing results. RESULTS Fifteen (25.4%) CO results were returned, of which 86.6% were <10 ppm and 53.3% were <5 ppm, indicating abstinence (corresponding to 20.9% and 12.9% of all trial participants self-reporting abstinence, respectively). These 15 participants found the test easy, acceptable and believed they conducted it correctly. Eight (18.2%) of the missing results were accounted for, including no access to a Windows PC, barriers to receiving packages, and unwillingness to share results. CONCLUSION Remote validation using personal CO monitors may not yet be feasible in pragmatic studies of cessation apps in which participants are recruited with no reimbursement or direct contact with researchers.
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Affiliation(s)
- Aleksandra Herbec
- Department of Behavioural Science and Health, University College London, London, UK
- UCL Tobacco and Alcohol Research Group (UTARG), UK
| | - Jamie Brown
- Department of Behavioural Science and Health, University College London, London, UK
- UCL Tobacco and Alcohol Research Group (UTARG), UK
| | - Lion Shahab
- Department of Behavioural Science and Health, University College London, London, UK
- UCL Tobacco and Alcohol Research Group (UTARG), UK
| | - Robert West
- Department of Behavioural Science and Health, University College London, London, UK
- UCL Tobacco and Alcohol Research Group (UTARG), UK
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17
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Study protocol for a telephone-based smoking cessation randomized controlled trial in the lung cancer screening setting: The lung screening, tobacco, and health trial. Contemp Clin Trials 2019; 82:25-35. [PMID: 31129371 DOI: 10.1016/j.cct.2019.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 05/10/2019] [Accepted: 05/22/2019] [Indexed: 01/01/2023]
Abstract
Lung cancer mortality can be reduced by 20% via low dose CT lung cancer screening (LCS) and treatment of early-stage disease. Providing tobacco use treatment to high risk cigarette smokers in the LCS setting may result in health benefits beyond the impact of LCS. As one of the nine trials in the National Cancer Institute's Smoking Cessation at Lung Examination (SCALE) collaboration, the goal of the Lung Screening, Tobacco, and Health (LSTH) trial is to develop a scalable and cost-effective cessation intervention for subsequent implementation by LCS programs. Guided by the RE-AIM Framework, the LSTH trial is a two-arm RCT (N = 1330) enrolling English- and Spanish-speaking smokers registered for LCS at one of seven collaborating sites. Participants are randomly assigned to Usual Care (UC; three proactive telephone counseling sessions/two weeks of nicotine patches) vs. Intensive Telephone Counseling (ITC; eight proactive sessions/eight weeks of nicotine patches, plus discussion of the LCS results to increase motivation to quit). Telephone counseling is provided by tobacco treatment specialists. To increase continuity of care, referring physicians are notified of participant enrollment and smoking status following the intervention. Outcomes include: 1) self-reported 7-day, 30-day, and sustained abstinence, and biochemically-verified at 3-, 6-, and 12-months post-randomization, 2) reach and engagement of the interventions, and 3) cost-effectiveness of the interventions. The Cancer Intervention and Surveillance Modeling Network (CISNET) will model long-term impacts of six SCALE trials on the cost per life year saved, quality-adjusted life years saved, lung cancer mortality reduction, and population mortality. CLINICAL TRIALS REGISTRATION: The trial is registered at clinical trials.gov: NCT03200236.
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Spears CA, Li L, Wu C, Vinci C, Heppner WL, Hoover DS, Lam C, Wetter DW. Mechanisms linking mindfulness and early smoking abstinence: An ecological momentary assessment study. PSYCHOLOGY OF ADDICTIVE BEHAVIORS 2019; 33:197-207. [PMID: 30829517 DOI: 10.1037/adb0000451] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Research has suggested that individuals with greater dispositional mindfulness (i.e., nonjudgmental, present-focused attention) are more likely to quit smoking, but the underlying mechanisms are unclear. This study investigated mechanisms linking mindfulness and early smoking abstinence using ecological momentary assessment (EMA). Participants were 355 smokers (33% Caucasian, 33% African American, 32% Latino; 55% female) receiving smoking cessation treatment. Mindfulness was assessed at baseline and on the quit date. For 4 days prequit and 1 week postquit, participants completed up to 4 EMAs per day indicating levels of negative affect (NA), positive affect (PA), smoking urges, and affect regulation expectancies. Mean, slope, and volatility were calculated for each prequit and postquit EMA variable. Associations among mindfulness, EMA parameters, and abstinence on the quit day and 7 days postquit, as well as indirect effects of mindfulness on abstinence through EMA parameters, were examined. Mindfulness predicted higher odds of abstinence in unadjusted but not covariate-adjusted models. Mindfulness predicted lower NA, higher PA, and lower affective volatility. Lower stress mediated the association between mindfulness and quit-day abstinence. Higher ratings of happy and relaxed, and lower ratings of bored, sad, and angry, mediated the association between mindfulness and postquit abstinence. Mindfulness appeared to weaken the association between craving and postquit abstinence. This study elucidates real-time, real-life mechanisms underlying dispositional mindfulness and smoking abstinence. During the early process of quitting smoking, more mindful individuals appeared to have more favorable emotional profiles, which predicted higher likelihood of achieving abstinence 1 week after the quit date. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
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Affiliation(s)
| | - Liang Li
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center
| | - Cai Wu
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center
| | | | - Whitney L Heppner
- Department of Psychological Science, Georgia College & State University
| | - Diana S Hoover
- Department of Health Disparities Research, The University of Texas MD Anderson Cancer Center
| | - Cho Lam
- Department of Population Health Sciences, University of Utah
| | - David W Wetter
- Department of Population Health Sciences, University of Utah
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Mundt MP, Baker TB, Fraser DL, Smith SS, Piper ME, Fiore MC. Paying Low-Income Smokers to Quit? The Cost-Effectiveness of Incentivizing Tobacco Quit Line Engagement for Medicaid Recipients Who Smoke. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2019; 22:177-184. [PMID: 30711062 PMCID: PMC6362459 DOI: 10.1016/j.jval.2018.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/20/2018] [Accepted: 08/03/2018] [Indexed: 06/09/2023]
Abstract
OBJECTIVES To determine the cost-effectiveness of an incentive-based stop-smoking intervention that paid Medicaid recipients who smoke to take calls from a tobacco quit line. METHODS A cost-effectiveness analysis was conducted alongside a randomized controlled trial. The analysis was conducted from a health care systems perspective on the basis of costs and effectiveness over a 6-month follow-up. Participants (n = 1900) were recruited from May 2013 to June 2015 through quit line (n = 980), clinic-based (n = 444), or community-based (n = 476) referrals. Incentive group participants (n = 948) received $30 a call for taking up to five tobacco quit line calls and $40 for biochemically verified tobacco abstinence at 6 months. Control group participants (n = 952) did not receive financial incentives for taking quit line calls. Intervention resource costs included incentive payments to participants, counselor and administrative staff time, and smoking cessation medications. Smoking status at baseline and 6 months was determined for all study participants via carbon monoxide (CO) breath tests (abstinence: CO < 7 ppm). Cost-effectiveness analysis calculated the incremental cost-effectiveness ratio (ICER). RESULTS Incentive treatment produced higher 6-month CO-confirmed 7-day point-prevalence abstinence than did the control treatment (21.6 vs. 13.8%; P < 0.001). The ICER of the financial incentives intervention was $2316 (95% confidence interval $1582-$4270) per additional person who quit. The study ICER compares favorably with other smoking treatments, such as varenicline combined with proactive telephone counseling, whose ICER has been estimated at $2600 per additional smoker who quits. CONCLUSIONS Use of financial incentives to engage with tobacco quit line treatment is a cost-effective option to enhance smoking cessation rates for low-income smokers.
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Affiliation(s)
- Marlon P Mundt
- Department of Family Medicine and Community Health, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Department of Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
| | - Timothy B Baker
- Center for Tobacco Research and Intervention, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - David L Fraser
- Center for Tobacco Research and Intervention, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Stevens S Smith
- Center for Tobacco Research and Intervention, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Megan E Piper
- Center for Tobacco Research and Intervention, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Michael C Fiore
- Center for Tobacco Research and Intervention, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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LaRowe LR, Kosiba JD, Zale EL, Ditre JW. Effects of nicotine deprivation on current pain intensity among daily cigarette smokers. Exp Clin Psychopharmacol 2018; 26:448-455. [PMID: 30035576 PMCID: PMC6162159 DOI: 10.1037/pha0000218] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Animal research has consistently demonstrated increased pain in the context of nicotine deprivation, and there is cross-sectional evidence that tobacco smokers may experience greater pain following periods of smoking abstinence. This study aimed to examine current pain intensity as a function of nicotine deprivation among 137 daily tobacco smokers who did not endorse chronic pain and were recruited to participate in a primary study of the effects of smoking abstinence on experimental pain reactivity. Participants were randomized to either deprivation (12-24 hr abstinence) or continued ad lib smoking conditions. Compliance with the manipulation was biochemically verified via expired carbon monoxide (CO). Current pain intensity was assessed at baseline (Session 1) and following the deprivation manipulation (Session 2) using a single item that asked participants to indicate their current level of pain on a scale ranging from 0 (no pain) to 10 (pain as bad as you can imagine). At baseline, the majority of participants (51.1%) reported no pain (M = 1.75). As hypothesized, participants randomized to nicotine deprivation (vs. continued smoking) reported greater current pain intensity following the manipulation. Among smokers who reported no pain at baseline, those who abstained from smoking were nearly 3.5 times more likely to endorse pain at Session 2. These results suggest that daily tobacco smokers may experience greater pain during the first 12-24 hr of smoking abstinence. Future research should examine the role of pain in nicotine withdrawal, and whether tailored interventions may be needed to account for nicotine deprivation-induced amplification of pain. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
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Affiliation(s)
- Lisa R. LaRowe
- Department of Psychology, Syracuse University, Syracuse, NY 13244, United States
| | - Jesse D. Kosiba
- Department of Psychology, Syracuse University, Syracuse, NY 13244, United States
| | - Emily L. Zale
- Department of Psychiatry, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, United States
| | - Joseph W. Ditre
- Department of Psychology, Syracuse University, Syracuse, NY 13244, United States
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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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Berger I, Mooney-Somers J. Smoking Cessation Programs for Lesbian, Gay, Bisexual, Transgender, and Intersex People: A Content-Based Systematic Review. Nicotine Tob Res 2018; 19:1408-1417. [PMID: 27613909 DOI: 10.1093/ntr/ntw216] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 08/26/2016] [Indexed: 12/24/2022]
Abstract
Introduction Tobacco use among lesbian, gay, bisexual, and transgender (LGBT) people is double the general population. Limited evidence suggests high smoking rates among intersex people. Lesbian, gay, bisexual, transgender, and intersex (LGBTI) people are a priority population in Australian health policy, particularly mental health and aging. Despite associations between smoking and noncommunicable diseases relevant to aging and mental health, LGBTI-targeted smoking cessation interventions in Australia have been limited to people living with HIV. Applying existing interventions to marginalized populations without modification and evaluation may fail and exacerbate inequities. Aims To assess outcomes and characterize the populations served, cultural modifications, and behavior change techniques (BCTs) of interventions to reduce LGBTI smoking. Methods We searched MEDLINE, six additional databases, and contacted authors to retrieve published and unpublished program evaluations. Results We retrieved 19 studies (3663 participants). None used control groups. Overall quit rate was 61.0% at the end of interventions and stabilized at 38.6% at 3-6 months. All studies included gay men, 13 included lesbians, 13 "LGBT," 12 bisexual people, five transgender people, and none included intersex people. Transgender people comprised 3% of participants. Of programs open to women, 27.8% of participants were women. Cultural modifications were used by 17 (89.5%) studies, commonly meeting in LGBT spaces, discussing social justice, and discussing LGBT-specific triggers. Common BCTs included providing normative information, boosting motivation/self-efficacy, relapse prevention, social support, action planning, and discussing consequences. Conclusions Quit rates were high; using control groups would improve evaluation. Existing programs may fail to reach groups other than gay men. Implications This review examines the evidence for LGBTI-targeted smoking cessation interventions. Populations within LGBTI are not proportionally represented in smoking cessation research, and no study addressed intersex smoking. Overall, LGBT-targeted interventions appear to be effective, and simply having an LGBT-specific group may be more effective than groups for the general population. More rigorous research is necessary to draw firm conclusions. Our study space analysis provides suggestions for areas of more targeted research on mechanisms underlying these complex interventions' success.
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Affiliation(s)
- Israel Berger
- Centre for Values, Ethics and Law in Medicine (VELiM), Sydney School of Public Health, University of Sydney, Sydney, NSW, Australia
| | - Julie Mooney-Somers
- Centre for Values, Ethics and Law in Medicine (VELiM), Sydney School of Public Health, University of Sydney, Sydney, NSW, Australia
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Cui Y, Engelmann JM, Xian J, Minnix JA, Lam CY, Karam-Hage M, Cinciripini PM, Robinson JD. Pharmacological intervention and abstinence in smokers undergoing cessation treatment: A psychophysiological study. Int J Psychophysiol 2018; 123:25-34. [PMID: 29223599 PMCID: PMC5759327 DOI: 10.1016/j.ijpsycho.2017.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/09/2017] [Accepted: 12/01/2017] [Indexed: 01/22/2023]
Abstract
As a composite concept, negative affect comprises various aversive emotional experiences, such as irritability and nervousness. It is a critical motivational factor that helps maintain smoking behavior, and contributes significantly to smoking cessation failure as a core withdrawal symptom. Prior research has indicated an important role of nicotinic mechanisms in negative affect processing. The most effective smoking cessation medication, varenicline, targets nicotinic acetylcholine receptors (nAChRs) as a partial agonist, while another first-line cessation medication, bupropion, has shown antagonistic effects on nAChRs. Therefore, it is possible that both medications work to reduce smoking behavior through modulating negative affect processing. To evaluate this hypothesis, we examined the impact of varenicline tartrate and bupropion hydrochloride sustained-release on electrophysiological responses to affective, cigarette-related, and neutral cues before and during smoking cessation treatment in a randomized placebo-controlled clinical trial. The participants were 206 smokers, a subset of 294 participants that were enrolled in a larger smoking cessation clinical trial who were randomly assigned to one medication group for 12weeks. Orbicularis oculi (startle eyeblink response) and corrugator supercilii facial electromyographic (EMG) reactivity toward emotional pictures (i.e., pleasant and unpleasant) in a picture-viewing task were measured before treatment and 2 and 6weeks after treatment was started. The startle and corrugator EMG activities increase with the exposure to unpleasant cues, and served as indices for negative emotional reactivity (NER). We found that after 6weeks, drug reduced startle-related NER in the varenicline group, but not in the bupropion or placebo group. Independent of medication treatment, lower baseline NER, as measured by the corrugator EMG activity, predicted a higher likelihood of smoking abstinence 1 and 3months after quitting smoking. These findings indicate the important roles of varenicline in negative affect processing and negative emotional reactivity in the course of smoking cessation.
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Affiliation(s)
- Yong Cui
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jeffrey M Engelmann
- Department of Psychiatry and Behavioral Medicine, Medial College of Wisconsin, Milwaukee, WI, United States
| | - Jonathan Xian
- Texas A&M Health Science Center College of Medicine, United States
| | - Jennifer A Minnix
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Cho Y Lam
- Department of Population Health Sciences, University of Utah, Salt Lake City, UT, United States
| | - Maher Karam-Hage
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Paul M Cinciripini
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jason D Robinson
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.
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Abstract
Objectives We examined the impact of cigarette filter collection on reports of cigarettes per day (CPD) versus self-reported CPD and to assess the utility of a pre-intervention baseline period in smoking studies. Methods Using baseline data from 522 non-treatment seeking smokers, we assessed differences in self-reported CPD via phone screen (CPD PS) and during baseline (CPD BL). We analyzed self-reported cigarette measures to predict carbon monoxide (CO), a measure of smoke exposure. Results On average, CPD PS was 2.8 CPD more than CPD BL, and reporting multiples of 10 were more often found in CPD PS compared with CPD BL (54.7% vs17.2%, respectively). CPD BL was more strongly associated with CO than self-report CPD. Number of cigarettes smoked today, time since last cigarette, and nicotine dependence were significantly associated with CO. Conclusions CPD BL using filter collection is a more accurate measure of cigarette consumption than self-report, which may have implications for assessment of nicotine dependence. When feasible, studies should include a pre-intervention baseline period for comparison data with study outcomes. In addition to CPD BL, studies should assess time since last cigarette and the number of cigarettes smoked today when using CO as a biological measure of smoke exposure.
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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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Okoli CTC, Anand V, Khara M. A Retrospective Analysis of the Outcomes of Smoking Cessation Pharmacotherapy Among Persons With Mental Health and Substance Use Disorders. J Dual Diagn 2017; 13:21-28. [PMID: 28166473 DOI: 10.1080/15504263.2017.1290860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES It is common practice to individualize smoking cessation pharmacotherapy based on clinical judgment and patient response. However, little has been documented about the use and outcomes of smoking cessation pharmacotherapy in real-world settings. This study examines factors associated with using smoking cessation pharmacotherapy and related outcomes among smokers with psychiatric and/or substance use disorders who completed an intensive tobacco treatment program within mental health and addiction services settings in Vancouver, Canada. METHODS A retrospective analysis was used to examine combined program participation data (N = 889) from two tobacco treatment programs (i.e., the Tobacco Dependence Clinic and the Butt Out group) between September 2007 and July 2013. Changes in smoking cessation pharmacotherapy from the initial to final treatment and seven-day point prevalence of smoking abstinence (verified by expired carbon monoxide) were assessed at the end of treatment. RESULTS During treatment, 60% of participants remained on the initial pharmacotherapy plan, 30% received adjunctive treatment, and 10% had treatment plans that were switched. Those whose pharmacotherapy was switched had higher cigarette consumption and nicotine dependence at baseline and were less likely to have a psychiatric disorder history. When comparing between pharmacotherapy groups, individuals who switched medications were less likely to achieve abstinence at the end of treatment as compared to those whose medication treatment plans remained the same or who received adjunctive treatment (unchanged = 36.8%, adjunctive = 38.1% vs. switched = 20.9%, χ2 = 9.59, df = 2, p = .008). In multivariate regression analysis, switching pharmacotherapy was associated with lower smoking cessation (OR = .33, 95% CI [.17, .63]) and significantly mediated the effectiveness of pharmacotherapy. As there were differences in medication switching rates at the clinical level, there were limitations in assessing the impact of mental illness or substance use disorder variables. CONCLUSIONS At least 40% of individuals may have their smoking cessation pharmacotherapy plan changed during treatment. Switching pharmacotherapy may indicate a subgroup of smokers characterized by greater challenges in smoking cessation. Our findings may enhance algorithms for using smoking cessation pharmacotherapy in clinical practice and provide directions for future research in treating tobacco use disorder among individuals with mental health and substance use disorders.
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Affiliation(s)
| | - Vivek Anand
- b East Carolina University, Brody School of Medicine , Greenville , North Carolina , USA
| | - Milan Khara
- c Tobacco Dependence Clinic, Vancouver Coastal Health Authority , Vancouver , British Columbia , Canada
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Blank MD, Breland AB, Cobb CO, Spindle T, Ramôa C, Eissenberg T. Clinical Laboratory Evaluation of Electronic Cigarettes/Electronic Nicotine Delivery Systems: Methodological Challenges. TOB REGUL SCI 2016; 2:426-439. [PMID: 28819633 PMCID: PMC5555604 DOI: 10.18001/trs.2.4.12] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Evaluating electronic cigarettes (ECIGs) in the clinical laboratory is critical to understanding their effects. However, laboratory evaluation of ECIGs can be challenging, as they are a novel, varied, and evolving class of products. The objective of this paper is to describe some methodological challenges to the clinical laboratory evaluation of ECIGs. METHODS The authors gathered information about challenges involved in the laboratory evaluation of ECIGs. Challenges were categorized and solutions provided when possible. RESULTS Methods used to study combustible cigarettes may need to be adapted to account for ECIG novelty and differences within the class. Challenges to ECIG evaluation can include issues related to 1) identification of ECIG devices and liquids, 2) determination of short -term ECIG abstinence, 3) measurement of use behavior, and 4) assessment of dependence. These challenges are discussed, and some suggestions to inform ECIG evaluation using clinical laboratory methods are provided. CONCLUSIONS Awareness of challenges and developing, validating, and reporting methods used to address them aids interpretation of results and replication efforts, thus enhancing the rigor of science used to protect public health through appropriate, empirically-based, ECIG regulation.
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Affiliation(s)
- Melissa D Blank
- Assistant Professor, West Virginia University, Morgantown, WV
| | - Alison B Breland
- Assistant Professor, Virginia Commonwealth University, Center for the Study of Tobacco Products, Richmond, VA
| | - Caroline O Cobb
- Assistant Professor, Virginia Commonwealth University, Center for the Study of Tobacco Products, Richmond, VA
| | - Tory Spindle
- Virginia Commonwealth University, Center for the Study of Tobacco Products, Richmond, VA
| | - Carolina Ramôa
- Post-Doctoral Fellow, Virginia Commonwealth University, Center for the Study of Tobacco Products, Richmond, VA
| | - Thomas Eissenberg
- Thomas Eissenberg, Professor, Virginia Commonwealth University, Center for the Study of Tobacco Products, Richmond, VA
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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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Engelmann JM, Versace F, Gewirtz JC, Cinciripini PM. Individual differences in brain responses to cigarette-related cues and pleasant stimuli in young smokers. Drug Alcohol Depend 2016; 163:229-35. [PMID: 27141838 PMCID: PMC4880545 DOI: 10.1016/j.drugalcdep.2016.04.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 03/30/2016] [Accepted: 04/20/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Decreased sensitivity to pleasant stimuli is associated with a higher vulnerability to nicotine dependence in youths and with difficulty quitting in adult smokers. Recently, we showed that smokers showing lower brain reactivity to non-cigarette-related pleasant images than to cigarette-related ones have lower chances of achieving long-term abstinence during a quit attempt. METHODS We tested whether individual differences in brain responses to cigarette-related and pleasant stimuli require a long history of smoking to develop by measuring the late positive potential (LPP) to cigarette cues, emotional, and neutral stimuli in 45 young, light smokers (ages 18-25). k-means cluster analysis was used to partition smokers into two groups based on the magnitude of their LPPs. RESULTS Group 1 was characterized by larger LPPs to pleasant pictures than cigarette-related pictures whereas Group 2 showed the opposite pattern. CONCLUSIONS Our results suggest that individual differences in brain responses to cigarette-related and pleasant cues do not require a long smoking history to develop.
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Affiliation(s)
- Jeffrey M Engelmann
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, United States.
| | - Francesco Versace
- Oklahoma Tobacco Research Center, Stephenson Cancer Center, and Department of Family & Preventive Medicine, University of Oklahoma Health Sciences Center, United States
| | | | - Paul M Cinciripini
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, United States
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Wang Y, Chen X, Gong J, Yan Y. Relationships Between Stress, Negative Emotions, Resilience, and Smoking: Testing a Moderated Mediation Model. Subst Use Misuse 2016; 51:427-38. [PMID: 26894428 PMCID: PMC4855524 DOI: 10.3109/10826084.2015.1110176] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE More effective tobacco prevention and cessation programs require in-depth understanding of the mechanism by which multiple factors interact with each other to affect smoking behaviors. Stress has long been recognized as a risk factor for smoking. However, the underlying mediation and moderation mechanisms are far from clear. The purpose of this study was to examine the role of negative emotions in mediating the link between stress and smoking and whether this indirect link was modified by resilience. METHODS Survey data were collected using audio computer-assisted self-interview (ACASI) from a large random sample of urban residents (n = 1249, mean age = 35.1, 45.3% male) in Wuhan, China. Perceived stress, negative emotions (anxiety, depression), resilience were measured with reliable instruments also validated in China. Self-reported smoking was validated with exhaled carbon monoxide. RESULTS Mediation analysis indicated that two negative emotions fully mediated the link between stress and intensity of smoking (assessed by number of cigarettes smoked per day, effect =.082 for anxiety and.083 for depression) and nicotine dependence (assessed by DSM-IV standard, effect =.134 for anxiety and.207 for depression). Moderated mediation analysis demonstrated that the mediation effects of negative emotions were negatively associated with resilience. CONCLUSIONS Results suggest resilience interacts with stress and negative emotions to affect the risk of tobacco use and nicotine dependence among Chinese adults. Further research with longitudinal data is needed to verify the findings of this study and to estimate the effect size of resilience in tobacco intervention and cessation programs.
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Affiliation(s)
- Yan Wang
- a Department of Epidemiology , University of Florida , Gainesville , Florida , USA
| | - Xinguang Chen
- a Department of Epidemiology , University of Florida , Gainesville , Florida , USA
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Emery RL, Levine MD. Optimal Carbon Monoxide Criteria to Confirm Smoking Status Among Postpartum Women. Nicotine Tob Res 2015; 18:966-70. [PMID: 26386471 DOI: 10.1093/ntr/ntv196] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 09/01/2015] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Although expired-air carbon monoxide (CO) is a well characterized biomarker of cigarette smoking, limited research has assessed whether the standard clinical CO cutoffs need to be altered for postpartum women and whether these cutoffs remain constant across the postpartum year. Accordingly, the present study evaluated the effectiveness of using CO as a method to confirm smoking status relative to salivary cotinine among postpartum women and assessed optimal CO criteria to confirm smoking status across the postpartum year. Differences in optimal CO criteria to confirm smoking status also were examined between black and white postpartum women. METHODS Women (N = 208) for the present study had quit smoking for their current pregnancy and were enrolled in a larger postpartum relapse prevention intervention. Smoking status was assessed at 12, 24, and 52 weeks postpartum using both expired-air CO and salivary cotinine. RESULTS Receiver-operating characteristic analyses indicated that CO provided moderately high diagnostic accuracy to distinguish between women who were and were not smoking when using salivary cotinine as the reference criterion to confirm smoking status. CO cutoffs of 2 and 3 parts per million (ppm) had the highest overall efficiency and combined sensitivity and specificity across the postpartum year. Results were consistent for black and white women. CONCLUSIONS These findings indicate that optimal CO criteria to confirm smoking status remains stable throughout the postpartum year and support a need to utilize CO cutoffs much lower than the standard clinical CO criterion of 8 ppm to confirm abstinence among postpartum women. IMPLICATIONS Findings from the present study confirm the value of CO as a biomarker of smoking status among postpartum women. Results indicate that CO cutoffs of 2 and 3 ppm were optimal for confirming smoking status across the entire postpartum year in both black and white women. These findings offer a replication and extension of previous work and indicate that optimal CO criteria to confirm smoking status remain stable throughout the postpartum period and further support a need to utilize CO cutoffs much lower than the standard clinical criterion of 8 ppm to confirm smoking status among postpartum women.
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Affiliation(s)
- Rebecca L Emery
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA;
| | - Michele D Levine
- Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA
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Cropsey KL, Trent LR, Clark CB, Stevens EN, Lahti AC, Hendricks PS. How low should you go? Determining the optimal cutoff for exhaled carbon monoxide to confirm smoking abstinence when using cotinine as reference. Nicotine Tob Res 2014; 16:1348-55. [PMID: 24891552 PMCID: PMC4207872 DOI: 10.1093/ntr/ntu085] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 04/15/2014] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Confirming abstinence during smoking cessation clinical trials is critical for determining treatment effectiveness. Several biological methods exist for verifying abstinence (e.g., exhaled carbon monoxide [CO], cotinine), and while cotinine provides a longer window of detection, it is not easily used in trials involving nicotine replacement therapy. The Society for Research on Nicotine and Tobacco's Subcommittee on Biochemical Verification cite 8-10 parts per million (ppm) for CO as a viable cutoff to determine abstinence; however, recent literature suggests this cutoff is likely too high and may overestimate the efficacy of treatment. METHODS This study examined the relationship between CO and cotinine in a sample of 662 individuals participating in a smoking cessation clinical trial. A receiver operating characteristics curve was calculated to determine the percentage of false positives and false negatives at given CO levels when using cotinine as confirmation of abstinence. Differences were also examined across race and gender. RESULTS A CO cutoff of 3 ppm (97.1% correct classification) most accurately distinguished smokers from nonsmokers. This same cutoff was accurate for both racial and gender groups. The standard cutoffs of 8 ppm (14.0% misclassification of smokers as abstainers) and 10 ppm (20.6% misclassification of smokers as abstainers) produced very high false-negative rates and inaccurately identified a large part of the sample as being abstinent when their cotinine test identified them as still smoking. CONCLUSIONS It is recommended that researchers and clinicians adopt a more stringent CO cutoff in the range of 3-4 ppm when complete abstinence from smoking is the goal.
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Affiliation(s)
- Karen L Cropsey
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL;
| | - Lindsay R Trent
- Department of Psychology, University of Mississippi, Oxford, Mississippi
| | - Charles B Clark
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL
| | - Erin N Stevens
- Department of Psychology, Northern Illinois University, DeKalb, IL
| | - Adrienne C Lahti
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL
| | - Peter S Hendricks
- Department of Health Behavior in the School of Public Health, University of Alabama at Birmingham, Birmingham, AL
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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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The role of participants' self-selected future smoking goals in adolescent smoking cessation interventions. Drug Alcohol Depend 2014; 141:118-23. [PMID: 24928478 DOI: 10.1016/j.drugalcdep.2014.05.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 05/16/2014] [Accepted: 05/18/2014] [Indexed: 11/21/2022]
Abstract
BACKGROUND There is an implicit assumption that abstinence is the treatment goal of young smokers that deliberately participate in cessation interventions, but this may not always be the case. To gain information on subgroups of adolescent intervention participants, we compare participants who want to achieve smoking abstinence (Abst) with those stating a non-abstinence future smoking goal (NAbst), with regard to baseline characteristics, reasons for participation, quit motivation, retention, goal attainment, and smoking abstinence. METHODS The sample consisted of 202 adolescent smokers (49.5% female). At baseline, 118 (58.4%) indicated abstinence as future smoking goal and 84 (41.6%) indicated non-abstinence. All participants received a behavioral smoking cessation intervention. Assessments took place before, during, and after treatment, and at 6-month follow-up. Regression analyses were conducted. RESULTS Abst and NAbst participants reported similar baseline characteristics. Abst participants, however, were more likely to report a previous quit attempt and indicated a higher quit motivation before and during treatment. Abst participants were more likely to participate based on own initiative and NAbst participants because of participating friends. Both groups attended a similar number of intervention sessions and were equally likely to attain their self-selected smoking goal. However, more Abst participants reported a successful quit attempt during treatment and abstinence at post-treatment and follow-up. CONCLUSIONS NAbst participants may represent a substantial subgroup in smoking cessation interventions for adolescents. Results indicate that future smoking goals can influence treatment outcomes. NAbst participants in treatment may benefit from additional information on the negative health consequences of light smoking.
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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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Okoli CTC, Khara M. Smoking cessation outcomes and predictors among individuals with co-occurring substance use and/or psychiatric disorders. J Dual Diagn 2014; 10:9-18. [PMID: 25392058 DOI: 10.1080/15504263.2013.866860] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Individuals with substance use and psychiatric disorders have a high prevalence of tobacco use disorders and are disproportionately affected by tobacco-related morbidity and mortality. However, it is unclear how having co-occurring disorders affects tobacco cessation. Our aim was to examine smoking cessation outcomes and relevant predictors of smoking cessation among smokers with substance use and/or psychiatric disorders. METHODS Data from medical records of 674 participants in a tobacco treatment program within mental health and addictions services in Vancouver, Canada, were analyzed. The 26-week treatment program included an 8-week structured behavioral counseling group, an 18-week support group, and 26 weeks of no-cost pharmacotherapy. Information on demographics, tobacco use and history, type of pharmacotherapy received, nicotine dependence, importance of and confidence in quitting smoking, expired carbon monoxide level, substance use and psychiatric disorder history, and total program visits were gathered. RESULTS Approximately 67% (n = 449) of participants had co-occurring substance use and psychiatric disorders, while 20% (n = 136) had substance use disorder only, 10% (n = 67) had psychiatric disorder only, and 3% (n = 22) had tobacco dependence only. Rates of tobacco cessation (i.e., 7-day point prevalence of abstinence verified by expired carbon monoxide of ≤8 ppm) by group in the 522 people who completed treatment were as follows: 38.2% for those with co-occurring disorders, 47.1% for those with tobacco dependence only, 47.1% for those with substance use disorder only, and 41.8% for those with psychiatric disorder only. Length of treatment was a significant predictor of smoking cessation for those with co-occurring disorders and substance use disorder only. In the final stratified multivariate analysis, for individuals with co-occurring disorders, having an opiate use disorder (as compared to an alcohol use disorder) and higher nicotine dependence scores at baseline were predictive of poor cessation outcomes, while greater length of treatment was predictive of successful smoking cessation. CONCLUSIONS Tobacco cessation treatment for individuals with co-occurring substance use and psychiatric disorders is likely to be as effective as for smokers with either disorder alone. Treatment duration predicts success among these smokers so strategies to enhance engagement and retention are needed.
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Zhang Q, Li L, Smith M, Guo Y, Whitlock G, Bian Z, Kurmi O, Collins R, Chen J, Lv S, Pang Z, Chen C, Chen N, Xiong Y, Peto R, Chen Z. Exhaled carbon monoxide and its associations with smoking, indoor household air pollution and chronic respiratory diseases among 512,000 Chinese adults. Int J Epidemiol 2013; 42:1464-75. [PMID: 24057999 PMCID: PMC3807615 DOI: 10.1093/ije/dyt158] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Exhaled carbon monoxide (COex) level is positively associated with tobacco smoking and exposure to smoke from biomass/coal burning. Relatively little is known about its determinants in China despite the population having a high prevalence of smoking and use of biomass/coal. METHODS The China Kadoorie Biobank includes 512,000 participants aged 30-79 years recruited from 10 diverse regions. We used linear regression and logistic regression methods to assess the associations of COex level with smoking, exposures to indoor household air pollution and prevalent chronic respiratory conditions among never smokers, both overall and by seasons, regions and smoking status. RESULTS The overall COex level (ppm) was much higher in current smokers than in never smokers (men: 11.5 vs 3.7; women: 9.3 vs 3.2). Among current smokers, it was higher among those who smoked more and inhaled more deeply. Among never smokers, mean COex was positively associated with levels of exposures to passive smoking and to biomass/coal burning, especially in rural areas and during winter. The odds ratios (OR) and 95% confidence interval (CI) of air flow obstruction (FEV1/FVC ratio<0.7) for never smokers with COex at 7-14 and ≥14 ppm, compared with those having COex<7, were 1.38 (1.31-1.45) and 1.65 (1.52-1.80), respectively (Ptrend<0.001). Prevalence of other self-reported chronic respiratory conditions was also higher among people with elevated COex (P<0.05). CONCLUSION In adult Chinese, COex can be used as a biomarker for assessing current smoking and overall exposure to indoor household air pollution in combination with questionnaires.
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Affiliation(s)
- Qiuli Zhang
- Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), University of Oxford, Oxford, UK, School of Public Health, Peking University Health Science Center, Beijing, China, Chinese Academy of Medical Sciences, Dong Cheng District, Beijing, China, China National Center For Food Safety Risk Assessment, Chaoyang District, Beijing, China, Licang Center for Disease Control and Prevention, Qingdao, Shandong, China, Heilongjiang Center for Disease Control and Prevention, Harbin, Heilongjiang, China, Meilan Center for Disease Control and Prevention, Haikou, Hainan, China, Guangxi Center for Disease Control and Prevention, Nanning, Guangxi, China and Liuyang Center for Disease Control and Prevention, Changsha, Hunan, China
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Bloom AJ, Baker TB, Chen LS, Breslau N, Hatsukami D, Bierut LJ, Goate A. Variants in two adjacent genes, EGLN2 and CYP2A6, influence smoking behavior related to disease risk via different mechanisms. Hum Mol Genet 2013; 23:555-61. [PMID: 24045616 DOI: 10.1093/hmg/ddt432] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Genome-wide significant associations with cigarettes per day (CPD) and risk for lung cancer and chronic obstructive pulmonary disease (COPD) were previously reported in a region of 19q13, including CYP2A6 (nicotine metabolism enzyme) and EGLN2 (hypoxia response). The associated single nucleotide polymorphisms (SNPs) were assumed to be proxies for functional variation in CYP2A6. Here, we demonstrate that when CYP2A6 and EGLN2 genotypes are analyzed together, the key EGLN2 variant, rs3733829, is not associated with nicotine metabolism independent of CYP2A6, but is nevertheless independently associated with CPD, and with breath carbon monoxide (CO), a phenotype associated with cigarette consumption and relevant to hypoxia. SNPs in EGLN2 are also associated with nicotine dependence and with smoking efficiency (CO/CPD). These results indicate a previously unappreciated novel mechanism behind genome-wide significant associations with cigarette consumption and disease risk unrelated to nicotine metabolism.
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Affiliation(s)
- A Joseph Bloom
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
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Kwok TC, Taggar J, Cooper S, Lewis S, Coleman T. Nicotine dependence and biochemical exposure measures in the second trimester of pregnancy. Nicotine Tob Res 2013; 16:145-54. [PMID: 23943839 PMCID: PMC3880232 DOI: 10.1093/ntr/ntt127] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Introduction: The Heaviness of Smoking Index (HSI) is validated to measure nicotine dependence in nonpregnant smokers, and in these smokers, mean salivary and serum cotinine levels are related by a ratio of 1.25. However, as nicotine metabolism increases during gestation, these findings may differ in pregnancy. We investigated the validity of HSI in pregnancy by comparing this with 3 biochemical measures; in a search for a less-invasive cotinine measure in pregnancy, we also explored the relationship between mean blood and salivary cotinine levels. Methods: Cross-sectional analyses using baseline data from the Smoking, Nicotine, and Pregnancy Trial. Participants were 16–46 years old, 12–24 weeks gestation, smoked more than 5 cigarettes per day, and had exhaled carbon monoxide (CO) readings of at least 8 ppm. Linear regression was used to examine correlations between HSI and blood cotinine and salivary cotinine and exhaled CO. Correlation between blood and salivary cotinine was investigated using linear regression through the origin. Results: HSI scores were associated with blood cotinine (R2 = 0.20, n = 662, p < .001), salivary cotinine (R2 = 0.11, n = 967, p < .001), and exhaled CO (R2 = 0.13, n = 1,050, p < .001). Salivary and blood cotinine levels, taken simultaneously, were highly correlated (R2 = 0.91, n = 628, p < .001) and the saliva:blood level ratio was 1.01 (95% CI 0.99–1.04). Conclusions: Correlations between HSI and biochemical measures in pregnancy were comparable with those obtained outside pregnancy, suggesting that HSI has similar validity in pregnant smokers. Salivary and blood cotinine levels are roughly equivalent in pregnant smokers.
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Affiliation(s)
- T'ng Chang Kwok
- Division of Primary Care, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, UK
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Nayan S, Gupta MK, Strychowsky JE, Sommer DD. Smoking Cessation Interventions and Cessation Rates in the Oncology Population. Otolaryngol Head Neck Surg 2013; 149:200-11. [DOI: 10.1177/0194599813490886] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objectives To evaluate tobacco smoking cessation interventions and cessation rates in the oncology population through a systematic review and meta-analysis. Data Sources The literature was searched using PubMed, Google Scholar, Medline, EMBASE, and the Cochrane Library (inception to October 2012) by 3 independent review authors. Review Methods Studies were included if they were randomized controlled trials (RCTs) or prospective cohort (PCs) studies evaluating tobacco smoking cessation interventions with patients assigned to a usual care or an intervention group. The primary outcome measure was smoking cessation rates. Two authors extracted data independently for each study. When applicable, disagreements were resolved by consensus. Results The systematic review identified 10 RCTs and 3 PCs. Statistical analysis was conducted using StatsDirect software (Cheshire, UK). Pooled odds ratios (ORs) for smoking cessation interventions were calculated in 2 groups based on follow-up duration. The therapeutic interventions included counseling, nicotine replacement therapy, buproprion, and varenicline. Smoking cessation interventions had a pooled odds ratio of 1.54 (95% confidence interval [CI], 0.909-2.64) for patients in the shorter follow-up group and 1.31 (95% CI, 0.931-1.84) in the longer follow-up group. Smoking cessation interventions in the perioperative period had a pooled odds ratio of 2.31 (95% CI, 1.32-4.07). Conclusion Our systematic review and meta-analysis demonstrate that tobacco cessation interventions in the oncology population, in both the short-term and long-term follow-up groups, do not significantly affect cessation rates. The perioperative period, though, may represent an important teachable moment with regard to smoking cessation.
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Affiliation(s)
- Smriti Nayan
- Division of Otolaryngology–Head and Neck Surgery, McMaster University, Ontario, Canada
| | - Michael K. Gupta
- Division of Otolaryngology–Head and Neck Surgery, McMaster University, Ontario, Canada
| | - Julie E. Strychowsky
- Division of Otolaryngology–Head and Neck Surgery, McMaster University, Ontario, Canada
| | - Doron D. Sommer
- Division of Otolaryngology–Head and Neck Surgery, McMaster University, Ontario, Canada
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Molony RD, Rice JM, Yuk JS, Shetty V, Dey D, Lawrence DA, Lynes MA. Mining the salivary proteome with grating-coupled surface plasmon resonance imaging and surface plasmon coupled emission microarrays. ACTA ACUST UNITED AC 2013; Chapter 18:Unit 18.16.1-19. [PMID: 22896008 DOI: 10.1002/0471140856.tx1816s53] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Biological indicators have numerous and widespread utility in personalized medicine, but the measurement of these indicators also poses many technological and practical challenges. Blood/plasma has typically been used as the sample source with which to measure these indicators, but the invasiveness associated with sample procurement has led to increased interest in saliva as an attractive alternative. However, there are unique issues associated with the measurement of saliva biomarkers. These issues are compounded by the imperfect correlation between saliva and plasma with respect to biomarker profiles. In this manuscript, we address the technical challenges associated with saliva biomarker quantification. We describe a high-content microarray assay that employs both grating-coupled surface plasmon resonance imaging and surface plasmon-coupled emission modalities in a highly sensitive assay with a large dynamic range. This powerful approach provides the tools to map the proteome of saliva, which in turn should greatly enhance the utility of salivary biomarker profiles in personalized medicine.
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Affiliation(s)
- Ryan D Molony
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut, USA
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Effects of Nicotine on Spinal Cord Injury Pain Vary Among Subtypes of Pain and Smoking Status: Results From a Randomized, Controlled Experiment. THE JOURNAL OF PAIN 2012; 13:1206-14. [DOI: 10.1016/j.jpain.2012.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 08/24/2012] [Accepted: 09/17/2012] [Indexed: 01/11/2023]
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de Dios MA, Anderson BJ, Stanton C, Audet DA, Stein M. Project Impact: a pharmacotherapy pilot trial investigating the abstinence and treatment adherence of Latino light smokers. J Subst Abuse Treat 2012; 43:322-30. [PMID: 22377389 PMCID: PMC3762477 DOI: 10.1016/j.jsat.2012.01.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Revised: 01/16/2012] [Accepted: 01/16/2012] [Indexed: 10/28/2022]
Abstract
Light smoking is particularly prevalent among Latino smokers. Nicotine replacement (NRT) and varenicline are effective medications for smoking cessation for moderate-heavy smokers but have not been tested in light smokers, and thus, there are no treatment guidelines for use with light smokers. This pilot trial tested the efficacy of NRT and varenicline in increasing smoking abstinence among Latino light smokers. A 3-group (NRT, varenicline, and varenicline-placebo) randomized design was used, and Latino light smokers (≤10 cigarettes per day) received 12 weeks of treatment, which included a culturally informed behavioral health session and ongoing medication management visits. At follow-up, there were no abstinent participants in the placebo and NRT groups. However, 30% of participants in the varenicline group were abstinent at the 3-, 4-, and 6-month follow-up. This study represents the only investigation that specifically targets Latino light smokers using these treatments and characterizing their treatment adherence.
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Affiliation(s)
- Marcel A de Dios
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI 02912, USA.
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Kim SS, Kim SH, Ziedonis D. Tobacco dependence treatment for Korean Americans: preliminary findings. J Immigr Minor Health 2012; 14:395-404. [PMID: 21785963 DOI: 10.1007/s10903-011-9507-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The study was conducted to examine the relative effectiveness of cognitive behavior therapy with a cultural tailoring intervention compared to brief medication management. The study used a two-arm randomized controlled trial in which participant assignment was stratified by gender. The intervention condition received eight weekly 40-min individualized counseling sessions of culturally tailored cognitive behavior therapy, while the control condition received eight weekly 10-min individualized counseling sessions of medication management. Both conditions received nicotine patches for 8 weeks. Data were collected at baseline and at four follow-up points (one and 4 weeks, and three and 6 months post-quit). Treatment outcomes were presented as an intention-to-treat analysis. Thirty Korean immigrants participated in the study. At 6-month follow-up, 57.1% of participants in the intervention and 18.8% of participants in the control had 7-day point prevalence abstinence (odds ratio = 5.8, 95% confidence interval = 1.12-26.04, P = 0.04). Participants' self-reported abstinence was biochemically verified with exhaled carbon monoxide and salivary cotinine levels. A combination of the culturally tailored cognitive behavior therapy and nicotine replacement therapy had a better treatment outcome compared to brief medication management. The promising result suggests a need to further test the intervention in larger samples and longer follow-up assessments before it can be adapted in clinical settings.
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Affiliation(s)
- Sun S Kim
- Department of Psychiatry, University of Massachusetts Medical School, Worcester, MA, USA.
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Assessing recent smoking status by measuring exhaled carbon monoxide levels. PLoS One 2011; 6:e28864. [PMID: 22194931 PMCID: PMC3241681 DOI: 10.1371/journal.pone.0028864] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Accepted: 11/16/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Cigarette smoke causes both acute and chronic changes of the immune system. Excluding recent smoking is therefore important in clinical studies with chronic inflammation as primary focus. In this context, it is common to ask the study subjects to refrain from smoking within a certain time frame prior to sampling. The duration of the smoking cessation is typically from midnight the evening before, i.e. 8 hours from sampling. As it has been shown that a proportion of current smokers underestimates or denies smoking, objective assessment of recent smoking status is of great importance. Our aim was to extend the use of exhaled carbon monoxide (CO(breath)), a well-established method for separating smokers from non-smokers, to assessment of recent smoking status. METHODS AND FINDINGS The time course of CO(breath) decline was investigated by hourly measurements during one day on non-symptomatic smokers and non-smokers (6+7), as well as by measurements on three separate occasions on non-smokers (n = 29), smokers with normal lung function (n = 38) and smokers with chronic obstructive pulmonary disease (n = 19) participating in a clinical study. We used regression analysis to model the decay, and receiver operator characteristics analysis for evaluation of model performance. The decline was described as a mono-exponential decay (r(2) = 0.7) with a half-life of 4.5 hours. CO decline rate depends on initial CO levels, and by necessity a generic cut-off is therefore crude as initial CO(breath) varies a lot between individuals. However, a cut-off level of 12 ppm could classify recent smokers from smokers having refrained from smoking during the past 8 hours with a specificity of 94% and a sensitivity of 90%. CONCLUSIONS We hereby describe a method for classifying recent smokers from smokers having refrained from smoking for >8 hours that is easy to implement in a clinical setting.
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Engelmann JM, Gewirtz JC, Cuthbert BN. Emotional reactivity to emotional and smoking cues during smoking abstinence: potentiated startle and P300 suppression. Psychophysiology 2011; 48:1656-68. [PMID: 24015407 PMCID: PMC3772548 DOI: 10.1111/j.1469-8986.2011.01235.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Negative affect is thought to be an important factor in the maintenance of cigarette smoking, and thus it is important to further develop objective measures of smoking-related emotional responses. Nonsmokers, non abstinent smokers, and abstinent smokers participated in a cue reactivity task where eyeblink startle amplitude and startle probe P300 (P3) suppression were measured during the presentation of emotional pictures.During unpleasant pictures, the amplitude of both measures was smaller in non abstinent smokers than in nonsmokers or abstinent smokers. P3 suppression, but not startle amplitude, was larger in abstinent smokers than in nonsmokers. Abstinence-induced increases in cigarette craving were associated with P3 suppression during tobacco-related pictures. Results suggest that tobacco abstinence increases emotional reactivity to unpleasant stimuli, which is consistent with negative reinforcement models of tobacco addiction.
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Affiliation(s)
- Jeffery M Engelmann
- Department of Psychology, University of Minnesota, Minneapolis, Minnesota, USA.
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Marrone GF, Shakleya DM, Scheidweiler KB, Singleton EG, Huestis MA, Heishman SJ. Relative performance of common biochemical indicators in detecting cigarette smoking. Addiction 2011; 106:1325-34. [PMID: 21438939 PMCID: PMC3137283 DOI: 10.1111/j.1360-0443.2011.03441.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS Many cities have banned indoor smoking in public places. Thus, an updated recommendation for a breath carbon monoxide (CO) cut-off is needed that optimally determines smoking status. We evaluated and compared the performance of breath CO and semiquantitative cotinine immunoassay test strips (urine and saliva NicAlert®) alone and in combination. DESIGN Cross-sectional study. SETTING Urban drug addiction research and treatment facility. PARTICIPANTS Ninety non-treatment-seeking smokers and 82 non-smokers. MEASUREMENTS Participants completed smoking histories and provided breath CO, urine and saliva specimens. Urine and saliva specimens were assayed for cotinine by NicAlert® and liquid chromatography-tandem mass spectrometry (LCMSMS). FINDINGS An optimal breath CO cut-off was established using self-report and LCMSMS analysis of cotinine, an objective indicator, as reference measures. Performance of smoking indicators and combinations were compared to the reference measures. Breath CO ≥5 parts per million (p.p.m.) optimally discriminated smokers from non-smokers. Saliva NicAlert® performance was less effective than the other indicators. CONCLUSIONS In surveys of smokers and non-smokers in areas with strong smoke-free laws, the breath carbon monoxide cut-off that discriminates most effectively appears to be ≥5 p.p.m. rather than the ≥10 p.p.m. cut-off often used. These findings may not generalize to clinical trials, regions with different carbon monoxide pollution levels or areas with less stringent smoke-free laws.
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Affiliation(s)
- Gina F. Marrone
- Nicotine Psychopharmacology Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - Diaa M. Shakleya
- Chemistry and Drug Metabolism Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - Karl B. Scheidweiler
- Chemistry and Drug Metabolism Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | | | - Marilyn A. Huestis
- Chemistry and Drug Metabolism Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - Stephen J. Heishman
- Nicotine Psychopharmacology Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
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Javors MA, Hatch JP, Lamb RJ. Sequential combination of self-report, breath carbon monoxide, and saliva cotinine to assess smoking status. Drug Alcohol Depend 2011; 113:242-4. [PMID: 20822867 PMCID: PMC3004995 DOI: 10.1016/j.drugalcdep.2010.07.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 07/19/2010] [Accepted: 07/22/2010] [Indexed: 11/27/2022]
Abstract
The purpose of this analysis was to develop an algorithm for the cost effective and accurate assessment of smoking during the previous few days by combining self-report, breath carbon monoxide (BCO), and saliva cotinine (sCOT). These measurements are convenient, quantitative, and do not require invasive procedures. The data used to devise the algorithm were gathered during a treatment trial of participants seeking to stop smoking. Self-report of smoking was determined using a written questionnaire, BCO was measured with a handheld breathalyzer, and sCOT was quantified using a high sensitivity ELISA. Participants were 130 males and 97 females between the ages of 19 and 67 years who reported smoking at least 15 cigarettes a day and had a BCO level ≥ 15 ppm. Self-reports and BCO levels were collected at each of 6 visits (V0-V5) and sCOT levels were determined at V0 and V5. Based on the data collected, we recommend that the sequential determination of self-reported smoking, BCO level, and sCOT level be employed to assess smoking during the previous few days to minimize the higher cost and longer turnaround time associated with the sCOT test while maximizing accuracy.
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Affiliation(s)
- M A Javors
- Department of Psychiatry, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA.
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Culbertson CS, Bramen J, Cohen MS, London ED, Olmstead RE, Gan JJ, Costello MR, Shulenberger S, Mandelkern MA, Brody AL. Effect of bupropion treatment on brain activation induced by cigarette-related cues in smokers. ACTA ACUST UNITED AC 2011; 68:505-15. [PMID: 21199957 DOI: 10.1001/archgenpsychiatry.2010.193] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
CONTEXT Nicotine-dependent smokers exhibit craving and brain activation in the prefrontal and limbic regions when presented with cigarette-related cues. Bupropion hydrochloride treatment reduces cue-induced craving in cigarette smokers; however, the mechanism by which bupropion exerts this effect has not yet been described. OBJECTIVE To assess changes in regional brain activation in response to cigarette-related cues from before to after treatment with bupropion (vs placebo). DESIGN Randomized, double-blind, before-after controlled trial. SETTING Academic brain imaging center. PARTICIPANTS Thirty nicotine-dependent smokers (paid volunteers). INTERVENTIONS Participants were randomly assigned to receive 8 weeks of treatment with either bupropion or a matching placebo pill (double-blind). MAIN OUTCOME MEASURES Subjective cigarette craving ratings and regional brain activations (blood oxygen level-dependent response) in response to viewing cue videos. RESULTS Bupropion-treated participants reported less craving and exhibited reduced activation in the left ventral striatum, right medial orbitofrontal cortex, and bilateral anterior cingulate cortex from before to after treatment when actively resisting craving compared with placebo-treated participants. When resisting craving, reduction in self-reported craving correlated with reduced regional brain activation in the bilateral medial orbitofrontal and left anterior cingulate cortices in all participants. CONCLUSIONS Treatment with bupropion is associated with improved ability to resist cue-induced craving and a reduction in cue-induced activation of limbic and prefrontal brain regions, while a reduction in craving, regardless of treatment type, is associated with reduced activation in prefrontal brain regions.
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