Evidence map›Paper›PMID 19175913›Full record

ArticleRespiratory research2009

Exercise intolerance and systemic manifestations of pulmonary emphysema in a mouse model.

Lars Lüthje, Tobias Raupach, Hellmuth Michels, Bernhard Unsöld, Gerd Hasenfuss, Harald Kögler, Stefan Andreas

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

34 citing papers in PubMed, 74 citations in OpenAlex.

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  16. Mouse Models of COPD.Methods in molecular biology (Clifton, N.J.) · 2018
    Article
  17. The Role of Regulatory T Cell in NontypeableMediators of inflammation · 2018
    Article
  18. Article
  19. Article
  20. Review
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

7 authors at 1 institution in 1 country.

Lars LüthjeKardiologie und Pneumologie, Georg-August-Universität, Göttingen, Germany. larsluethje@med.uni-goettingen.de
Tobias Raupach
Hellmuth Michels
Bernhard Unsöld
Gerd Hasenfuss
Harald Kögler
Stefan Andreas
University of Göttingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSystemic effects of chronic obstructive pulmonary disease (COPD) significantly contribute to severity and mortality of the disease. We aimed to develop a COPD/emphysema model exhibiting systemic manifestations of the disease.

methodsFemale NMRI mice were treated 5 times intratracheally with porcine pancreatic elastase (emphysema) or phosphate-buffered saline (control). Emphysema severity was quantified histologically by mean linear intercept, exercise tolerance by treadmill running distance, diaphragm dysfunction using isolated muscle strips, pulmonary hypertension by measuring right ventricular pressure, and neurohumoral activation by determining urinary norepinephrine concentration.

resultsMean linear intercept was higher in emphysema (260.7 +/- 26.8 microm) than in control lungs (24.7 +/- 1.7 microm). Emphysema mice lost body weight, controls gained weight. Running distance was shorter in emphysema than in controls. Diaphragm muscle length was shorter in controls compared to emphysema. Fatigue tests of muscle strips revealed impaired relaxation in emphysema diaphragms. Maximum right ventricular pressure and norepinephrine were elevated in emphysema compared to controls. Linear correlations were observed between running distance changes and intercept, right ventricular weight, norepinephrine, and diaphragm length.

conclusionThe elastase mouse model exhibited severe emphysema with consecutive exercise limitation, and neurohumoral activation. The model may deepen our understanding of systemic aspects of COPD.

Indexed as

Exercise ToleranceAnimalsBody WeightDiaphragmDisease Models, AnimalFemaleHemodynamicsHypertension, PulmonaryLungLung ComplianceMiceMuscle FatigueMuscle RelaxationNorepinephrinePancreatic ElastasePulmonary Disease, Chronic ObstructiveNorepinephrinePancreatic Elastase

Identifiers

PMID19175913
PMCPMC2644670
OpenAlexW1989807292

What OpenQuestion holds

Textmetadata
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.