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Идёт набор NCT04281979

Effects of a Specific Substance in Smokers

Без фазы С лечением Smoking

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают
В протоколе указаны: Study Agent, Placebo.
Кому может быть актуально
Состояния в реестре: Smoking. Базовые параметры: 21 лет — 40 лет · Все.
Что важно проверить
Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится
США
Следующий шаг
Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
Официальное название

An MRI Study of Neural Activity Following Exposure to a Specific Substance in Young Cigarette Smokers

Обзор

Although rates of cigarette use are declining, the proportion of nondaily smokers is rising, particularly among young adults. Among young adults, nondaily smoking is associated with negative health consequences and, for some, may lead to the establishment of life-long smoking patterns. The goal of this project is to understand the behavioral, psychological and neurobiological factors that contribute to cigarette use in nondaily smokers to aid the development of tailored evidence-based interventions.

Подробное описание

The purpose of this study is to investigate the neurobiological mechanisms associated with cigarette use in young nondaily smokers (ages 21-25). Nondaily smokers experience fewer symptoms of cigarette withdrawal than daily smokers; however, they still experience difficulty quitting. Since smoking cessation before the age of 30 substantially attenuates the long-term health consequences associated with smoking, understanding the factors that motivate cigarette use in young nondaily smokers and developing tailored interventions will be critical for curbing cigarette use and improving public health. The proposed project will use functional magnetic resonance imaging (fMRI) to examine how other substances (e.g. stimulates, sedatives, or analgesics) impact brain function and will assess the extent to which substance-induced changes in brain function correlate with impulsive choice, cigarette craving, and craving regulation in young adults. Furthermore, the investigators will assess how substance-induced changes in brain function, impulsivity, craving, and capacity for craving regulation predict cigarette use over the course of 1 year.

Вмешательства

  • Препарат Study Agent
    The study agent will be administered via beverages and/or a capsule. The substances used in the study are legal, non-prescription, and are proven safe for human consumption at the doses used. The study agent may be a depressant (such as alcohol), a stimulant (such as caffeine), or an analgesic (such as aspirin).
  • Препарат Placebo
    In the placebo conditions participants will consume beverages and capsules that contain no or very small quantities of the study agent.

Первичные конечные точки

  • Impulsivity [Срок оценки: Immediately after beverage/capsule consumption]
  • Resting State Functional Connectivity [Срок оценки: 35 minutes after beverage/capsule consumption]
  • Cigarette Craving and Associated Brain Activation [Срок оценки: 50 minutes after beverage/capsule consumption]
  • Symptoms of Cigarette Dependence [Срок оценки: 1 year follow-up from baseline]

Критерии участия

Критерии включения

  • Participants must be 21-40 years old
  • Right-handed
  • Fluent in English
  • Report smoking cigarettes or e-cigarettes 1-27 days in the past month
  • Report binge drinking based on NIAAA criteria (5 or more drinks per occasion for males, 4 or more drinks per occasion for females) at least 1 time in the past 90 days without adverse incident

Критерии исключения

  • Seeking treatment for substance use (e.g. nicotine or alcohol use)
  • Moderate or Severe Nicotine Dependence
  • Current alcohol use disorder
  • Illicit substance use other than marijuana use in the past year
  • Marijuana use more than 10 times in the past year
  • Major neurological or medical illness - Significant head trauma - Current use of medication affecting the central nervous system
  • MRI contraindications (e.g. irremovable metal on the body or pregnancy)

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Распределение
Рандомизированное
Модель
Перекрёстный дизайн
Маскирование
Простое слепое
Основная цель
Фундаментальное исследование

Центры проведения

США · 1 центр
  • Oregon Health and Science University — Portland

Идентификаторы

NCT: NCT04281979 · STUDY00018483 · K01DA046649

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗