Evidence map›Paper›PMID 26462767›Full record

ArticleJournal of biomedical science2015

Vitamin A depletion induced by cigarette smoke is associated with an increase in lung cancer-related markers in rats.

Yuan Xue, Ethan Harris, Weiqun Wang, Richard C Baybutt

Open access · diamondAbstract read
In one paragraph

Article in Journal of biomedical science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.5field-weighted citation impact, top 34% 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

12 citing papers in PubMed, 15 citations in OpenAlex.

  1. Review
  2. Significance of Vitamins A and E in Cancer Progression and Prevention.International journal of molecular sciences · 2025
    Review
  3. Article
  4. Fat-soluble Vitamins and Lung Cancer: Where We Are?Recent patents on anti-cancer drug discovery · 2025
    Review
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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

4 authors at 2 institutions in 1 country.

Yuan XueDepartment of Human Nutrition, Kansas State University, 213 Justin Hall, Manhattan, KS, 66506, USA. Yuan.Xue@cshs.org.
Ethan HarrisDepartment of Applied Health Science, Wheaton College, 501 College Avenue, Wheaton, IL, 60187, USA. Ethan.Harris@my.wheaton.edu.
Weiqun WangDepartment of Human Nutrition, Kansas State University, 213 Justin Hall, Manhattan, KS, 66506, USA. wwang@k-state.edu.
Richard C BaybuttDepartment of Human Nutrition, Kansas State University, 213 Justin Hall, Manhattan, KS, 66506, USA. Richard.Baybutt@wheaton.edu.
Kansas State University · USWheaton College - Illinois · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe have previously demonstrated that cigarette smoke is associated with a significant reduction of retinoic acid in rat lungs and the formation of tracheal precancerous lesions. However, the underlying mechanism of cancer risk induced by vitamin A deficiency is unclear. The purpose of this study was to determine whether the cigarette smoke-induced depletion of vitamin A is related to changes in lung cancer risk-related molecular markers.

resultsWe investigated the roles of the retinoic acid receptors (RARs) as well as other biomarkers for potential cancer risk in the lungs of rats exposed to cigarette smoke. Twenty-four male weanling rats were fed a purified diet and divided equally into four groups. Three experimental groups were exposed to increasing doses of cigarette smoke from 20, 40 or 60 commercial cigarettes/day for 5 days/week. After 6 weeks, the retinoic acid concentrations in the lung tissue as measured via high performance liquid chromatography (HPLC) significantly decreased (P < 0.01) in cigarette smoke exposed groups. Western Blot analysis revealed that cigarette smoke exposure increased lung protein expression of RAR α in a threshold manner and decreased RAR β and RAR γ expression in a dose-dependent fashion. Protein expressions of cyclin E and proliferating cell nuclear antigen (PCNA) were increased significantly in a dose-dependent manner in cigarette smoke exposed-groups. Additionally, there was a significant increase in protein expression of cJun and cyclin D1 demonstrating a threshold effect similar to that exhibited by RARα, suggesting a potential independent signaling pathway for RARα in lung carcinogenesis.

conclusionsFindings from this study suggest that cigarette smoke-induced lung retinoic acid depletion may involve two independent pathways, RARα- and RARβ-mediated, responsible for the increased cancer risk associated with cigarette smoke-induced vitamin A deficiency.

Indexed as

AnimalsBiomarkers, TumorLung NeoplasmsMaleNeoplasm ProteinsRatsRats, Sprague-DawleyReceptors, Retinoic AcidRetinoic Acid Receptor alphaRetinoic Acid Receptor gammaSmokingVitamin ABiomarkers, TumorNeoplasm ProteinsRARA protein, humanRara protein, ratReceptors, Retinoic AcidRetinoic Acid Receptor alphaRetinoic Acid Receptor gammaVitamin A

Identifiers

PMID26462767
PMCPMC4605095
OpenAlexW2111430476

What OpenQuestion holds

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LicenceCC BY
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.