Monitoring the Transition From Smoking to E-cigarettes
מילות מפתח
תַקצִיר
תיאור
Established smokers will completely stop smoking for 4 weeks and instead transition to nicotine use through an electronic cigarette as required. They will be free to purchase the e-cigarette and e-liquid/cartridges of their own choice.
Eligible subjects will be asked to visit St George's Clinical Research Facility to provide the following samples. Blood, saliva and buccal cells to be collected on screening day. 24hr urine, blood, saliva and buccal cells will be collected at baseline and on days 3, 7, 21 and 28 after the first transition to e-cigarette use.
Moreover, subjects will be breathalysed with carbon monoxide (CO) oximeter and their urine analysed for anatabine to assess compliance to the study protocol (complete refrain of use of tobacco cigarettes for 4 weeks while they use e-cigarettes).
Subjects will be monitored for craving, mood, social anxiety, sleep profile and quality of life on every visit to St George's Clinical Research Facility (quality of life will be assessed only at baseline and day 28 of e-cigarette use). The subjects will be followed up with a telephone call 6 and 12 months after the end of the e-cigarette intervention to monitor their smoking/e-cigarette use behaviour and participants craving, mood, social anxiety, sleep profile and quality of life.
תאריכים
| אומת לאחרונה: | 12/31/2018 |
| הוגש לראשונה: | 04/12/2016 |
| ההרשמה המשוערת הוגשה: | 04/20/2016 |
| פורסם לראשונה: | 04/25/2016 |
| העדכון האחרון הוגש: | 01/15/2019 |
| עדכון אחרון פורסם: | 01/16/2019 |
| תאריך תחילת לימוד בפועל: | 08/31/2016 |
| תאריך סיום משוער משוער: | 03/31/2019 |
| תאריך סיום משוער ללימודים: | 03/31/2019 |
מצב או מחלה
שלב
קבוצות זרועות
| זְרוֹעַ | התערבות / טיפול |
|---|---|
| Heavy smokers Heavy smokers (continuous smoking of >10 cigarettes per day) for at least 6 months who will give up smoking and switch to nicotine containing e-cigarettes for 28 days to help them quit smoking. |
קריטריונים לזכאות
| גילאים הזכאים ללימודים | 18 Years ל 18 Years |
| מינים הזכאים ללימודים | All |
| שיטת דגימה | Non-Probability Sample |
| מקבל מתנדבים בריאים | כן |
| קריטריונים | Inclusion Criteria: 1. Heavy smokers (continuous smoking of >10 cigarettes per day) for at least 6 months who are willing to give up smoking and switch to nicotine containing e-cigarettes to help them quit smoking. 2. Males and females aged 18-65 years 3. Subjects must be willing and able to give informed consent 4. Subjects must have understanding of English sufficient that they are able to read and understand the participant information sheet and the informed consent form 5. Subjects in the opinion of the Investigator are healthy on the basis of medical history questionnaire and vital signs 6. Subjects who will purchase their e-cigarettes kits, e-liquid and/or cartridges from a pharmacy, leading super market, established newsagent chain) Exclusion Criteria: 1. Severe psychosis, Bipolar Affective Disorder I, prostate cancer, Cushing's syndrome, severe depression with suicidal ideation and intention, brain trauma or other severe neurological disorders (e.g. pan-hypopituitarism) or taking antidepressants, anxiolytics antipsychotics 2. Pregnant females and lactating mothers 3. History of substance abuse and alcoholism 4. History of cardiovascular disease (heart disease, angina, heart attacks, high blood pressure, heart surgery) in the last 6 months. 5. Self-declared smokers with low or non-detectable CO readings in their breath when tested with the oxymeter will be excluded from further being studied 6. Smokers who are undergoing alternative Nicotine Replacement Therapy (NRT)/pharmacological treatment for smoking cessation (i.e. nicotine patches, nicotine gum, Champix, bupropion) 7. Any other condition that in the judgement of the investigator would preclude participation 8. Smokers who are unwilling to refrain from smoking for 4 weeks |
תוֹצָאָה
מדדי תוצאות ראשוניים
1. Change of levels of DNA adducts analysed by high resolution liquid chromatography [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
2. Change of levels of tobacco specific nitrosamines analysed by high resolution liquid chromatography [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
3. Change of levels of stress hormones analysed by ELISA [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
4. Change of levels of DNA methylation analysed by high pressure liquid chromatography-UV [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
אמצעי תוצאה משניים
1. Change of measures of withdrawal symptoms severity measured by the Fagerstrom test [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
2. Change of measures of craving analysed by Minnesota Nicotine Withdrawal Scale [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
3. Change of measures of mood analysed by Mood and Physical Symptoms Scale (MPSS) [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
4. Change of measures of anxiety analysed by State-Trait Anxiety Inventory [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
5. Change of measures of social anxiety analysed by Liebovitz Social Anxiety Test [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
6. Changes of measures of depression analysed by Beck Depression Inventory [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
7. Changes of measures of sleep analysed by Pittsburg Sleep Index or Karolinska sleep questionaire [Screening, baseline and 3, 7, 21 and 28 days following transition to e-cigarettes]
8. Changes of measure of quality of life analysed by the European Quality of Life Questionnaire (EuroQL-5D) [baseline and 28 days following transition to e-cigarettes]
9. Changes in brain electrical activity measured by EEG [baseline and 21 days following transition to e-cigarettes]
