- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT05205382
Att bedöma effekten av nikotinreduktion på ENDS Användares beroende och exponeringar
Studieöversikt
Status
Betingelser
Detaljerad beskrivning
Användningen av elektroniska nikotinleveranssystem (ENDS eller e-cigaretter) har nått epidemiska nivåer bland unga människor i USA (USA). ENDS avger giftiga ämnen, inklusive nikotin som irreversibelt påverkar den utvecklande hjärnan och leder till beroende och ökad risk för att börja röka cigarett. Bevis tyder på att unga människor som använder ENDS sannolikt kommer att påskynda användningen och bli nikotinberoende. Några av de mest populära ENDS bland ungdomar (t.ex. JUUL med 5 % nikotinvätska) levererar i en patron en nikotindos lika med ett helt paket cigaretter, och många användare är omedvetna om denna betydande exponering och den relaterade risken för beroende. Å andra sidan har nikotinreduktion (NR) ansetts av US Food and Drug Administration (FDA) som en viktig strategi för att begränsa beroendeframkallande och användning av tobaksprodukter.
Nu när FDA reglerar ENDS under "deeming rule" kan en sådan strategi övervägas för dessa framväxande tobaksprodukter. Utredarna saknar dock fortfarande bevis på de förväntade effekterna av en rad NR-nivåer på ENDS-användare i olika skeden av användningsbanan. Med hjälp av kliniska och analytiska labbmetoder planerar utredarna att bland 5 % nikotin ENDS-användare jämföra effekten av partiell (3 %) eller total (nikotinfri, 0 %) NR på användarnas beroende, tillfredsställelse, kliniska (t.ex. BP, oximetri, lungfunktioner, symtom), uppblåst beteende och exponering för giftiga ämnen. Utredarna kommer att rekrytera nuvarande ENDS-användare (n=120; 21-35 år), för en 2X2-studie inom ämnesövergångslabb. Nikotintillstånden (5 %, 3 %) eller (0 %, 5 %) x 2 gånger (före efter) är faktorer inom ämnet.
Därför är studien uppdelad i 2 delar, där den första delen kommer att vara 2x2 som jämför NJOY 5% och 3% för att testa effekterna av partiell nikotinreduktion, och den andra delen kommer att använda NIDA Standardized Research Electronic Cigarette (SREC) för Clinical Research 5% och 0% (placebo), för att testa effekten av den totala minskningen med samma baljor och juicer från samma tillverkare.
Utredarna antar att NR kommer att förknippas med mindre tillfredsställelse, abstinensundertryckande och avsikt att använda och att en sådan effekt kommer att vara mer uttalad totalt sett jämfört med partiell NR och bland högt jämfört med lågberoende användare. De föreslagna studierna syftar till att besvara tre huvudsakliga regulatoriska frågor: 1) är NR ett lovande regulatoriskt alternativ för att minska ENDS beroendeframkallande och användning; 2) vad är effekten av partiell vs. total NR på kompenserande svullnad och exponering för nikotin och luftvägsgifter, och 3) vad är effekten av NR på ENDS-användare i olika skeden av deras användning. Tillsammans kommer dessa studier att ge direkta och standardiserade bevis på potentialen av NR-regler för att begränsa beroendeframkallande och användning av ENDS, och för att hjälpa till att förutsäga eventuella biverkningar av NR på ENDS-användares exponering för skadliga giftiga ämnen.
Studietyp
Inskrivning (Faktisk)
Fas
- Inte tillämpbar
Kontakter och platser
Studieorter
-
-
Florida
-
Miami, Florida, Förenta staterna, 33199
- Florida International University
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Beskrivning
Inklusionskriterier:
- Generellt friska individer (bestäms genom fysisk undersökning).
- Ålder 21-35 år.
- Är villig att ge informerat samtycke.
- Är villig att delta i labbet enligt studieprotokollet.
- Användare av elektronisk cigarett (definieras som att använda elektronisk cigarett antingen dagligen eller ibland under de senaste 30 dagarna)
- Har avstått från användning av elektroniska cigaretter i 12 timmar före varje session
Exklusions kriterier:
- Anmäl rökning av cigaretter regelbundet (> 5 cigaretter/månad under det senaste året).
- Rapportera regelbunden användning av andra tobaks-/nikotinprodukter (t.ex. vattenpipa, pipor, cigarrer) under det senaste året.
- Kvinnor som ammar eller testar positivt för graviditet (genom urinanalys vid screening).
- Individer med självrapporterad historia av kronisk sjukdom eller aktuella psykiatriska tillstånd.
- Individer med historia av eller aktiv hjärt-kärlsjukdom, lågt eller högt blodtryck, kramper och regelbunden användning av receptbelagda mediciner (andra än vitaminer eller preventivmedel).
- Individer som rapporterar aktuell THC (marijuana) rökning/vaping.
- Individer som rapporterar användning av icke-kommersiell (d.v.s. gatu) vätska eller produkter av e-cigarett
- Individer som rapporterar aktuella EVALI- eller COVID-19-relaterade symtom (d.v.s. hosta, andfåddhet, bröstsmärtor, illamående, kräkningar, buksmärtor, diarré, feber, frossa eller viktminskning)
- Individer som har eller har exponerats för covid-19 under de senaste 14 dagarna.
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Förebyggande
- Tilldelning: Randomiserad
- Interventionsmodell: Crossover tilldelning
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Experimentell: Partial Nicotine Reduction: Electronic cigarette pods with 5% nicotine concentration
For the partial nicotine reduction study, participants will complete a lab visit where they will use 5% nicotine electronic cigarette pods (JUUL/NJOY) ad libitum for up to 60 minutes.
|
Partial Nicotine Reduction: Effects of e-cigarette pods (JUUL/NJOY) with 5% nicotine concentration nicotine concentration
|
|
Experimentell: Partial Nicotine Reduction: Electronic cigarette pods with 3% or 2.4% nicotine concentration
For the partial nicotine reduction study, participants will complete a lab visit where they will use 3% or 2.4% nicotine electronic cigarette pods (JUUL/NJOY) ad libitum for up to 60 minutes.
|
Partial Nicotine Reduction: Effects of e-cigarette pods (JUUL/NJOY) with 3% or 2.4% nicotine concentration
|
|
Experimentell: Total Nicotine Reduction: Electronic cigarette pods with 5% nicotine concentration
For the total nicotine reduction study, participants will complete a lab visit where they will use 5% nicotine electronic cigarette pods (SREC) ad libitum for up to 60 minutes.
|
Total Nicotine Reduction: Effects of e-cigarette pods (SREC) with 5% nicotine concentration
|
|
Experimentell: Total Nicotine Reduction: Electronic cigarette pods with 0% nicotine concentration
For the total nicotine reduction study, participants will complete a lab visit where they will use 0% nicotine electronic cigarette pods (SREC) ad libitum for up to 60 minutes.
|
Total Nicotine Reduction: Effects of e-cigarette pods (SREC) with 0% nicotine concentration nicotine concentration
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Plasma Nicotine Boost
Tidsram: During the 2 participant visits, blood was taken 2 times in each session: before and after approximately 60 minutes ad lib use.
|
Change in plasma nicotine level.
The plasma nicotine boost was calculated by subtracting the preplasma nicotine value from the postplasma value.
|
During the 2 participant visits, blood was taken 2 times in each session: before and after approximately 60 minutes ad lib use.
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Puff Topography (Total Puffing Time)
Tidsram: During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
Measurement of puffing behavior in total puffing time
|
During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
|
Puff Topography (Average Puff Duration)
Tidsram: During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
Measurement of puffing behavior in average puffing duration
|
During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
|
Puff Topography (Puff Number)
Tidsram: During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
Measurement of puffing behavior; mean of the number of puffs taken during the ad-libitum smoking session
|
During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
|
Puff Topography (Inhaled Volume)
Tidsram: During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
Measurement of puffing behavior; mean volume of puffs inhaled during the ad-libitum smoking session
|
During participants' 2 study visits. Puffing behavior is continuously measured during each electronic cigarette use session (an approximately 60 minutes ad lib use period)
|
|
Toxicants (Carcinogenic and Probably or Possibly Carcinogenic) Exposure
Tidsram: During the 2 participant visits for both trials (partial and total). Toxicant exposure was measured after an approximately 60 minutes ad lib electronic cigarette use period.
|
This aim elucidates how compensatory puffing behavior in response to NR affects exposure to pulmonary toxicants.
The analytical assessments were conducted at the AUB Aerosol Research Laboratory (ARL) using the Aerosol Lab Vaping Instrument (ALVIN).
The ALVIN is programmed to playback participants' puffing behavior recorded during their two sessions (for both partial and total nicotine reduction studies) to generate and sample the e-cigarette aerosol for analysis.
The ARL is equipped with gas chromatographs with a flame ionization detector and a mass spectrometer (GC-FID, GC-MS), as well as and High-performance liquid chromatography Mass Spectrometry (HPLC-MS) for aldehydes analysis.
ARL optimized analytical methods have been used in several NIH-funded studies of ENDS nicotine and aldehydes emissions.
|
During the 2 participant visits for both trials (partial and total). Toxicant exposure was measured after an approximately 60 minutes ad lib electronic cigarette use period.
|
|
TPM (Total Particular Matter) Exposure
Tidsram: During the 2 participant visits for both trials (partial and total). Total Particular Matter exposure was measured after an approximately 60 minutes ad lib electronic cigarette use period.
|
This aim elucidates how compensatory puffing behavior in response to NR affects exposure to pulmonary toxicants.
The analytical assessments were conducted at the AUB Aerosol Research Laboratory (ARL) using the Aerosol Lab Vaping Instrument (ALVIN).
The ALVIN is programmed to playback participants' puffing behavior recorded during their two sessions (for both partial and total nicotine reduction studies) to generate and sample the e-cigarette aerosol for analysis.
The ARL is equipped with gas chromatographs with a flame ionization detector and a mass spectrometer (GC-FID, GC-MS), as well as and High-performance liquid chromatography Mass Spectrometry (HPLC-MS) for aldehydes analysis.
ARL optimized analytical methods have been used in several NIH-funded studies of ENDS nicotine and aldehydes emissions.
|
During the 2 participant visits for both trials (partial and total). Total Particular Matter exposure was measured after an approximately 60 minutes ad lib electronic cigarette use period.
|
|
Lung Function Tests (LFTs) Change
Tidsram: During participants' 2 study visits. Lung function tests will be measured 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
LFTs (i.e., lung volume testing, airway resistance, specific airway conductance) will be measured before and immediately after ENDS use.
According to 2019 American Thoracic Society and European Respiratory Society recommendation simple spirometry (e.g., change in FVC and FEV1) will be performed.
Note: This outcome is not involved in multiple assessments since all the values will appear on the spirometry at the same time.
|
During participants' 2 study visits. Lung function tests will be measured 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
|
Lung Function Tests (LFTs) (% Predicted Change)
Tidsram: During participants' 2 study visits. Lung function tests will be measured 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
LFTs (i.e., lung volume testing, airway resistance, specific airway conductance) will be measured before and immediately after ENDS use.
According to 2019 American Thoracic Society and European Respiratory Society recommendation simple spirometry (e.g., % predicted value pred (FVC), FEV1 % pred FEV1/FVC, % pred) will be performed.
Note: This outcome is not involved in multiple assessments since all the values will appear on the spirometry at the same time.
|
During participants' 2 study visits. Lung function tests will be measured 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
|
Minnesota Nicotine Withdrawal Scale (MNWS)
Tidsram: During participants' 2 study visits. Questionnaire will be administered 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
Nicotine withdrawal symptoms were measured using the Minnesota Nicotine Withdrawal Scale (MNWS) before and after each vaping session.
MNWS evaluates 11 withdrawal-related symptoms, including depressed mood, irritability, restlessness, hunger, and difficulty concentrating, using scale from "0" (not at all) to "100" (extremely).
For each session and condition, change scores were calculated by subtracting pre-session from post-session scores for each individual item
|
During participants' 2 study visits. Questionnaire will be administered 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
|
Tiffany-Drobes Questionnaire of Smoking Urges (QSU)
Tidsram: During participants' 2 study visits. Questionnaire will be administered 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
The Tiffany-Drobes Questionnaire of Smoking Urges-Brief (QSU-Brief) is a 10-item self-report measure of cigarette craving and urge to smoke. It consists of two subscales representing distinct dimensions of craving: Factor 1 (Desire and Intention to Smoke): assesses desire, intention, and anticipation of pleasure associated with smoking. Factor 2 (Anticipation of Relief from Negative Affect and Withdrawal): assesses expectations that smoking will relieve withdrawal symptoms or negative affect. Each item is rated on a 7-point Likert scale ranging from 1 = strongly disagree to 7 = strongly agree. Subscale scores were calculated by averaging the items within each factor. Higher scores on either factor indicate greater smoking urge or craving, representing a worse outcome, whereas lower scores indicate lower craving or urge to smoke, representing a better outcome. Pre- to post-session change scores were calculated as pre-session score minus post-session score for each factor. |
During participants' 2 study visits. Questionnaire will be administered 2 times in each electronic cigarette use session: before and after an approximately 60 minutes ad lib use period
|
|
Duke Sensory Questionnaire (DSQ)
Tidsram: During participants' 2 study visits. Questionnaire will be administered after each of the 2 electronic cigarette use sessions. Each session is approximately 60 minutes ad lib use period
|
This scale will assess participants sensory experience of the inhaled product.
The scale has nine items.
All items will be scored on a 7-point Likert scale anchored at the extremes (1= not at all; 7=extremely).
|
During participants' 2 study visits. Questionnaire will be administered after each of the 2 electronic cigarette use sessions. Each session is approximately 60 minutes ad lib use period
|
|
Modified Cigarette Evaluation Questionnaire (mCEQ)
Tidsram: During participants' 2 study visits. Questionnaire will be administered after each of the 2 electronic cigarette use sessions. Each session is approximately 60 minutes ad lib use period
|
Modified Cigarette Evaluation Questionnaire (mCEQ) is used to assess subjective effects associated with ENDS use. The 11-item questionnaire evaluates satisfaction, psychological reward, enjoyment of respiratory tract sensations, craving reduction and aversion. Individual item scores were reported (not subscales). Each item was rated using 7-point Likert scale; 1 = not at all to 7 = extremely. For all items, higher scores indicate greater endorsement of the measured subjective experience, while lower scores indicate less endorsement of that experience. The interpretation depends on the construct being measured: For items assessing satisfaction, enjoyment, psychological reward, sensory experiences, and craving reduction, higher scores indicate greater product reinforcement or abuse liability. For items assessing aversion, higher scores indicate greater unpleasant effects or product aversiveness. |
During participants' 2 study visits. Questionnaire will be administered after each of the 2 electronic cigarette use sessions. Each session is approximately 60 minutes ad lib use period
|
|
Visual Analogue Scale (VAS)
Tidsram: During participants' 2 study visits. Questionnaire will be administered after each of the 2 electronic cigarette use sessions. Each session is approximately 60 minutes ad lib use period
|
This scale contains 10-item questions to assess users' pleasure and enjoyment using the validated Visual Analog Scale (VAS) post ENDS use sessions.
The scale includes items to assess user's desire, pleasure, satisfaction, future use, and other information rated on an analog scale (0 not at all to 100 extremely).
|
During participants' 2 study visits. Questionnaire will be administered after each of the 2 electronic cigarette use sessions. Each session is approximately 60 minutes ad lib use period
|
Andra resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Heart Rate
Tidsram: During participants' 2 study visits. Heat rate will be measured from baseline and subsequently every 10 minutes until end of vaping session.
|
Change in heart rate, measured in beats per minute (bpm).
|
During participants' 2 study visits. Heat rate will be measured from baseline and subsequently every 10 minutes until end of vaping session.
|
|
Blood Pressure (Systolic)
Tidsram: During participants' 2 study visits. Blood pressure will be measured from baseline and subsequently every 10 minutes until end of vaping session.
|
Change in systolic blood pressure, measured in mm/hg.
|
During participants' 2 study visits. Blood pressure will be measured from baseline and subsequently every 10 minutes until end of vaping session.
|
|
Blood Pressure (Diastolic)
Tidsram: During participants' 2 study visits. Blood pressure will be measured from baseline and subsequently every 10 minutes until end of vaping session.
|
Change in diastolic blood pressure, measured in mm/hg.
|
During participants' 2 study visits. Blood pressure will be measured from baseline and subsequently every 10 minutes until end of vaping session.
|
Samarbetspartners och utredare
Sponsor
Utredare
- Huvudutredare: Wasim Maziak, PhD, MD, Florida International University
Publikationer och användbara länkar
Allmänna publikationer
- Ferdous T, Roy S, Chowdhury S, Jebai R, Maya L, DeCaprio AP, Bursac Z, Maziak W. Partial Nicotine Reduction and E-Cigarette Users' Puffing Behaviors Among Adults Aged 21 to 35 Years: A Randomized Crossover Clinical Trial. JAMA Netw Open. 2024 Jul 1;7(7):e2422954. doi: 10.1001/jamanetworkopen.2024.22954.
- Roy S, Chowdhury S, Ferdous T, Shihadeh A, Salman R, El Hage R, Salam S, Bursac Z, Maziak W. Predicting nicotine emissions and plasma nicotine boost in E-cigarette users using machine learning. Sci Rep. 2026 Jun 13. doi: 10.1038/s41598-026-57341-4. Online ahead of print.
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- R01DA053587 (U.S.S. NIH-anslag/kontrakt)
Plan för individuella deltagardata (IPD)
Planerar du att dela individuella deltagardata (IPD)?
Läkemedels- och apparatinformation, studiedokument
Studerar en amerikansk FDA-reglerad läkemedelsprodukt
Studerar en amerikansk FDA-reglerad produktprodukt
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .