Evidence map›Paper›PMID 33310485›Full record

ArticleDrug and alcohol dependence2021

The reinforcement threshold and elasticity of demand for nicotine in an adolescent rat model of depression.

John R Smethells, Danielle Burroughs, Amy Saykao, Paul R Pentel, Amir H Rezvani, Mark G LeSage

Open access · greenAbstract read
In one paragraph

Article in Drug and alcohol dependence, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.4field-weighted citation impact, top 44% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 9 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

John R SmethellsHennepin Healthcare Research Institute, Minneapolis, MN, United States; Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, United States.
Danielle BurroughsHennepin Healthcare Research Institute, Minneapolis, MN, United States.
Amy SaykaoHennepin Healthcare Research Institute, Minneapolis, MN, United States.
Paul R PentelHennepin Healthcare Research Institute, Minneapolis, MN, United States; Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, United States; Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, United States.
Amir H RezvaniDepartment of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, United States.
Mark G LeSageHennepin Healthcare Research Institute, Minneapolis, MN, United States; Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, United States; Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, United States; Department of Psychology, University of Minnesota, Minneapolis, MN, United States. Electronic address: lesag002@umn.edu.
Hennepin Healthcare Research Institute · USUniversity of Minnesota Medical Center · USDuke University · USUniversity of Minnesota · US

Funding

Targeted tobacco regulatory science: Nicotine dose effects in animal models of smoking initiation in vulnerable adolescent subpopulationsR01DA042525 · NIDA · HENNEPIN HEALTHCARE RESEARCH INSTITUTE · PI LESAGE, MARK G · 2016 to 2018
$1.5M
NIDA NIH HHS R01 DA042525
6 · The paper itself

Abstract

backgroundThe Food and Drug Administration (FDA) is considering setting a nicotine standard for tobacco products to reduce their addictiveness. Such a standard should account for the apparent greater vulnerability to nicotine addiction in some subpopulations, such as adolescents with depression. The present study examined whether the reinforcement threshold and elasticity of demand (i.e., reinforcing efficacy) for nicotine in a genetic inbred rat model of depression (Flinders Sensitive Line [FSL]) differs from an outbred control strain.

methodsAcquisition of nicotine self-administration (NSA) across a wide range of nicotine doses was measured in both FSL and Sprague-Dawley (SD) control adolescent rats. At the highest dose, elasticity of demand was also measured. Nicotine pharmacokinetics was examined to determine whether it might modulate NSA, as it does smoking in humans.

resultsFSL rats acquired self-administration quicker and showed more inelastic demand (greater reinforcing efficacy) than SDs at the highest unit dose. However, there was no strain difference in the reinforcement threshold of nicotine. FSL rats exhibited faster nicotine clearance, larger volume of distribution, and lower plasma and brain nicotine concentrations. However, these differences were not consistently related to strain differences in NSA measures.

conclusionThese findings are consistent with studies showing greater dependence and reinforcing efficacy of cigarettes in smokers with depression and those with relatively fast nicotine metabolism. However, these findings also suggest that a nicotine standard to reduce initiation of tobacco use should be similarly effective in both the general adolescent population and those with depression.

Indexed as

AnimalsDepressionDisease Models, AnimalElasticityHumansNicotineRatsRats, Sprague-DawleyReinforcement, PsychologySelf AdministrationSmokersSmokingTobacco Use DisorderNicotineAbuse liabilityDepression modelNicotineRat

Identifiers

PMID33310485
PMCPMC7855441
OpenAlexW3108943759

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.