Cited by 520Sirtuins and Resveratrol in MedicineChronic Obstructive Pulmonary Disease (COPD) ResearchSmoking Behavior and Cessation

SIRT1, an antiinflammatory and antiaging protein, is decreased in lungs of patients with chronic obstructive pulmonary disease

Open access
Rajendrasozhan, Saravanan, Yang, Se-Ran, Kinnula, Vuokko L., Rahman, Irfan·2008·American Journal of Respiratory and Critical Care Medicine

Abstract

Rationale: Abnormal inflammation and accelerated decline in lung function occur in patients with chronic obstructive pulmonary disease (COPD). Human sirtuin (SIRT1), an antiaging and antiinflammatory protein, is a metabolic NAD+-dependent protein/histone deacetylase that regulates proinflammatory mediators by deacetylating histone and nonhistone proteins. Objectives: To determine the expression of SIRT1 in lungs of smokers and patients with COPD, and to elucidate the regulation of SIRT1 in response to cigarette smoke in macrophages, and its impact on nuclear factor (NF)-κB regulation. Methods: SIRT1 and NF-κB levels were assessed in lung samples of nonsmokers, smokers, and patients with COPD. Human monocyte–macrophage cells (MonoMac6) were treated with cigarette smoke extract (CSE) to determine the mechanism of CSE-mediated regulation of SIRT1 and its involvement in RelA/p65 regulation and IL-8 release. Measurements and Main Results: Peripheral lungs of smokers and patients with COPD showed decreased levels of nuclear SIRT1, as compared with nonsmokers, associated with its post-translational modifications (formation of nitrotyrosine and aldehyde carbonyl adducts). Treatment of MonoMac6 cells with CSE showed decreased levels of SIRT1 associated with increased acetylation of RelA/p65 NF-κB. Mutation or knockdown of SIRT1 resulted in increased acetylation of nuclear RelA/p65 and IL-8 release, whereas overexpression of SIRT1 decreased IL-8 release in response to CSE treatment in MonoMac6 cells. Conclusions: SIRT1 levels were reduced in macrophages and lungs of smokers and patients with COPD due to its post-translational modifications by cigarette smoke–derived reactive components, leading to increased acetylation of RelA/p65. Thus, SIRT1 plays a pivotal role in regulation of NF-κB–dependent proinflammatory mediators in lungs of smokers and patients with COPD.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1164/rccm.200708-1269oc

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Exposure to cigarette smoke oxidatively decreases SIRT1 levels and concomitantly increases NF-κB-dependent release of pro-inflammatory mediators in MonoMac6 cells and in mouse lungs.

    “Exposure to cigarette smoke oxidatively decreases SIRT1 levels and concomitantly increases NF-κB-dependent release of pro-inflammatory mediators in MonoMac6 cells and in mouse lungs [198], [199].”

    From Redox control of senescence and age-related disease. (2017) · cites this paper as [199]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Dail DH, Liebow AA, Gmelich JT, Friedman PJ, Miyai K, Myer W, Patterson SD, Hammar SP. Intravascular, bronchiolar, and alveolar tumor of the lung (IVBAT): an analysis of twenty cases of a peculiar sclerosing endothelial tumor. Cancer 1983;51:452-464.

Cited by

Sorted by citations

Authors
Rajendrasozhan, S., Yang, S.-R., Kinnula, V. L., & Rahman, I.
Affiliations
  • University of Rochester Medicine (US)
  • University of Helsinki (FI)
Venue
American Journal of Respiratory and Critical Care Medicine
Published
2008-04
Volume
177
Issue
8
Pages
861-870
ISSN
  • 1073-449X (ISSN-L)
  • 1535-4970
OpenAlex
W2123193437
Cited by
520
References
49
Citations by year
2026: 15 · 2025: 15 · 2024: 19 · 2023: 28 · 2022: 20 · 2021: 27 · 2020: 33 · 2019: 29 · 2018: 28 · 2017: 34 · 2016: 29 · 2015: 35 · 2014: 30 · 2013: 37 · 2012: 37
FWCI
13.95
Type
journal article
Language
en
Open access
Locations
  • American Journal of Respiratory and Critical Care Medicine (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
Funders
  • Pfizer
  • National Institute of Environmental Health Sciences (ES-01247, P30ES001247)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
Keywords
SIRT1, chronic obstructive pulmonary disease, cigarette smoke, NF-κB, macrophages, interleukin-8, nitrotyrosine, post-translational modification, inflammation, aging, smokers
MeSH terms
Acetylation, Adult, Aged, Female, Humans, Macrophages, Male, Middle Aged, Protein Processing, Post-Translational, Smoke, Smoking, Nicotiana, Pulmonary Disease, Chronic Obstructive, Sirtuins, Cell Line, Tumor, Sirtuin 1

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review