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Bildgebende Geschlechtsunterschiede bei rauchinduzierter Lungenentzündung

23. September 2026 aktualisiert von: University of Pennsylvania

Messung der Lungenentzündung mittels 18F-NOS-Positronen-Emissions-Tomographie (PET/CT) bei E-Zigaretten-Benutzern

The purpose of this research is to measure the extent of lung inflammation between different groups of participants using a radioactive tracer called [18F]NOS. A radioactive tracer is a type of imaging drug that is labeled with a radioactive tag and injected into the body.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This study will see how the tracer is taken up in the lungs using an imaging scan called Positron Emission Tomography / Computed Tomography (PET/CT). [18F]NOS is an experimental radioactive molecule used in PET imaging to measure inflammation in various organs in the body. Investigators are interested in studying whether there are differences in lung inflammation between E-cigarette users (vapers) cigarette smokers and non-smokers. [18F]NOS has not yet been approved by the Food and Drug Administration (FDA) for use except in a research study. The use of [18F]NOS in this study is allowed under an Investigational New Drug Application approved by the FDA.

Investigators are also going to be studying how the information from the PET/CT scan compares to other markers of inflammation in the blood. During the PET scan, Investigators will image Brain and Lungs in order to see if there is a difference between inflammation seen in the brain and the lungs and if these differences change depending on whether a subject is a smoker, e-cigarette user or non-smoker.

Consented participant in this study will undergo one (1) experimental [18F]NOS PET/CT scan. During the scan, PET/CT images will be taken of participant chest/torso in order to capture their lungs and a short image will be taken of their brain. Blood samples will be taken at various time points to test for markers of inflammation and to measure the concentration of the tracer in participants blood during the scan and participants will undergo some specific psychological questionnaires and tasks.

Studientyp

Interventionell

Einschreibung (Geschätzt)

100

Phase

  • Phase 1

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

    • Pennsylvania
      • Philadelphia, Pennsylvania, Vereinigte Staaten, 19104
        • Rekrutierung
        • University of Pennsylvania
        • Hauptermittler:
          • Jacob Dubroff, MD, PhD
        • Kontakt:

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre bis 45 Jahre (Erwachsene)

Akzeptiert gesunde Freiwillige

Ja

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  1. Participants will be 18-45 years of age

  2. Subject must meet one of the following criteria:

    NIC vapers: current e-cigarette use of nicotine at least 5 days per week for the past year, no current combustible cigarette use, cannabis vaping, or cannabis smoking during the 30 days prior to study enrollment

    CAN vapers: current e-cigarette use of cannabis at least 5 days per week for the past year, no current combustible cigarette use, cannabis smoking, or nicotine vaping during the 30 days prior to study enrollment

    Cigarette smokers: current cigarette smoking of at least 5 cigarettes per day, 4 days per week for the past year with no e-cigarette use (cannabis or nicotine) during the 30 days prior to study enrollment

    Dual combustible and e-cigarette users: current e-cigarette use of cannabis and/or nicotine at least 5 days per week for the past year with cigarette or cannabis smoking during the 30 day prior to study enrollment

    Non-Smokers: reported non-smoking history or < 100 lifetime cigarettes, < 100 e-cigarette use episodes, and < 100 lifetime cannabis use episodes

  3. Participants must be informed of the investigational nature of this study and be willing to provide written informed consent and participate in this study in accordance with institutional and federal guidelines prior to study-specific procedures.

Exclusion Criteria:

  1. Females who are pregnant or breast feeding at the time of screening will not be eligible for this study; a urine pregnancy test will be performed in women of child-bearing potential at screening and on scan day.
  2. Current untreated and unstable diagnosis of substance use disorder, except nicotine use disorder or cannabis use disorder
  3. Positive urine drug screen for opiates, methamphetamine or cocaine at screening
  4. Current unstable and/or untreated major depression or psychotic disorder per medical record review or self-reported
  5. Use of inhaled or oral corticosteroids or anti-inflammatory medications per medical record review or self-report
  6. History of lung trauma
  7. Active (or within the previous 4 weeks of screening) lung infection or lung disease that impact uptake of [18F]NOS (e.g. tuberculosis, cystic fibrosis)
  8. Inability to tolerate imaging procedures in the opinion of an investigator or treating physician
  9. Any current or past medical condition, illness, or disorder as assessed by medical record review and/or self-reported that is considered by a physician investigator to be a condition that could compromise participant safety or successful participation in the study

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Sonstiges
  • Zuteilung: Nicht randomisiert
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Traditional Cigarette Smokers

Reported current cigarette smoking of at least 5 cigarettes per day, 5 days per week for the past 1 year with no history of e-cigarette use (cannabis or nicotine) during the 30 days prior to study enrollment

[18F]NOS is an investigational radiotracer which each subject will have one [18F]NOS positron emission tomography/computed tomography (PET/CT) scan performed.

Andere Namen:
  • [18F]-6-(2-Fluorpropyl)-4-methylpyridin-2-amin
Experimental: Non-Smokers

Reported non-smoking history or < 100 lifetime cigarettes, < 100 e-cigarette use episodes and < 100 lifetime cannabis use episodes

[18F]NOS is an investigational radiotracer which each subject will have one [18F]NOS positron emission tomography/computed tomography (PET/CT) scan performed.

Andere Namen:
  • [18F]-6-(2-Fluorpropyl)-4-methylpyridin-2-amin
Experimental: Nicotine Vapers

Reported current e-cigarette use of nicotine at least 5 days per week for the past year with no current combustible cigarette use, cannabis vaping or cannabis smoking during the 30 days prior to study enrollment

[18F]NOS is an investigational radiotracer which each subject will have one [18F]NOS positron emission tomography/computed tomography (PET/CT) scan performed.

Andere Namen:
  • [18F]-6-(2-Fluorpropyl)-4-methylpyridin-2-amin
Experimental: Cannabis Vapers

Reported current e-cigarette use of cannabis at least 5 days per week for the past year, no current combustible cigarette use, cannabis smoking or nicotine vaping during the 30 days prior to study enrollment

[18F]NOS is an investigational radiotracer which each subject will have one [18F]NOS positron emission tomography/computed tomography (PET/CT) scan performed.

Andere Namen:
  • [18F]-6-(2-Fluorpropyl)-4-methylpyridin-2-amin
Experimental: Dual Smokers/Vapers

Reported current e-cigarette use of cannabis and/or nicotine at least 5 days per week for the past year with cigarette or cannabis smoking during the 30 days prior to study enrollment

[18F]NOS is an investigational radiotracer which each subject will have one [18F]NOS positron emission tomography/computed tomography (PET/CT) scan performed.

Andere Namen:
  • [18F]-6-(2-Fluorpropyl)-4-methylpyridin-2-amin
Experimental: Poly-use nicotine and cannabis group

Poly-use nicotine and cannabis group: current e-cigarette use of nicotine and/or cigarette use (5 cigarettes per day) and/or use of cannabis, at least 4 days per week during the 30 days prior to study enrollment.

[18F]NOS is an investigational radiotracer which each subject will have one [18F]NOS positron emission tomography/computed tomography (PET/CT) scan performed.

Andere Namen:
  • [18F]-6-(2-Fluorpropyl)-4-methylpyridin-2-amin

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
lung inflammation using [18F]NOS PET/CT
Zeitfenster: 3 years

lung inflammation using [18F]NOS PET/CT and compare uptake in ENDS users to traditional cigarette smokers and non-smokers.

3 years

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
relationship between [18F]NOS uptake and peripheral inflammatory biomarkers
Zeitfenster: 3 years

relationship between [18F]NOS uptake measures and established peripheral inflammatory biomarkers (e.g. C-reactive protein and Il-6).

3 years
differences in brain inflammation between three cohort using [18F]NOS PET/CT]
Zeitfenster: 3 years

Using [18F]NOS PET/CT to explore relative differences in brain inflammation between ENDS users, traditional cigarette smokers and non-smokers.

3 years

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Hauptermittler: Jacob Dubroff, MD, PhD, University of Pennsylvania

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

23. Oktober 2018

Primärer Abschluss (Geschätzt)

23. Oktober 2027

Studienabschluss (Geschätzt)

23. Oktober 2028

Studienanmeldedaten

Zuerst eingereicht

25. Oktober 2018

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

25. Oktober 2018

Zuerst gepostet (Tatsächlich)

26. Oktober 2018

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

24. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

23. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • 831205

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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