Evidence map›Paper›PMID 26122092›Full record

ArticleRespiratory research2015

A flavanone from Baccharis retusa (Asteraceae) prevents elastase-induced emphysema in mice by regulating NF-κB, oxidative stress and metalloproteinases.

Laura Taguchi, Nathalia M Pinheiro, Clarice R Olivo, Alessandra Choqueta-Toledo, Simone S Grecco, Fernanda D T Q S Lopes, Luciana C Caperuto, Mílton A Martins, Iolanda F L C Tiberio, Niels O Câmara and 2 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Respiratory research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

23 citing papers in PubMed, 42 citations in OpenAlex.

  1. Trial
  2. Article
  3. Flavonoids ofVeterinary sciences · 2025
    Article
  4. Investigating the Effects of a New Peptide, Derived from theInternational journal of molecular sciences · 2023
    Article
  5. Article
  6. Flavonoids as inhibitors of human neutrophil elastase.Journal of enzyme inhibition and medicinal chemistry · 2021
    Review
  7. Article
  8. Molecules (Basel, Switzerland) · 2021
    Review
  9. Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Osong public health and research perspectives · 2017
    Article
  17. Review
  18. Article
  19. Article
  20. Observational
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 3 institutions in 1 country.

Laura TaguchiDepartment of Biological Science, Universidade Federal de São Paulo, Rua Artur Riedel, 275 - Eldorado, Diadema, SP, Brazil.
Nathalia M PinheiroDepartment of Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
Clarice R OlivoDepartment of Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
Alessandra Choqueta-ToledoDepartment of Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
Simone S GreccoDepartment of Exact and Earth Sciences, Universidade Federal de São Paulo, Diadema, Brazil.
Fernanda D T Q S LopesDepartment of Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
Luciana C CaperutoDepartment of Biological Science, Universidade Federal de São Paulo, Rua Artur Riedel, 275 - Eldorado, Diadema, SP, Brazil.
Mílton A MartinsDepartment of Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
Iolanda F L C TiberioDepartment of Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
Niels O CâmaraDepartment of Immunology, Biological Institute, Universidade de São Paulo, São Paulo, Brazil.
João Henrique G LagoDepartment of Exact and Earth Sciences, Universidade Federal de São Paulo, Diadema, Brazil.
Carla M PradoDepartment of Biological Science, Universidade Federal de São Paulo, Rua Artur Riedel, 275 - Eldorado, Diadema, SP, Brazil. carla.prado@unifesp.br.
Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRUniversidade Federal de São Paulo · BRInstituto Biológico · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPulmonary emphysema is characterized by irreversible airflow obstruction, inflammation, oxidative stress imbalance and lung remodeling, resulting in reduced lung function and a lower quality of life. Flavonoids are plant compounds with potential anti-inflammatory and antioxidant effects that have been used in folk medicine. Our aim was to determine whether treatment with sakuranetin, a flavonoid extracted from the aerial parts of Baccharis retusa, interferes with the development of lung emphysema.

methodsIntranasal saline or elastase was administered to mice; the animals were then treated with sakuranetin or vehicle 2 h later and again on days 7, 14 and 28. We evaluated lung function and the inflammatory profile in bronchoalveolar lavage fluid (BALF). The lungs were removed to evaluate alveolar enlargement, extracellular matrix fibers and the expression of MMP-9, MMP-12, TIMP-1, 8-iso-PGF-2α and p65-NF-κB in the fixed tissues as well as to evaluate cytokine levels and p65-NF-κB protein expression.

resultsIn the elastase-treated animals, sakuranetin treatment reduced the alveolar enlargement, collagen and elastic fiber deposition and the number of MMP-9- and MMP-12-positive cells but increased TIMP-1 expression. In addition, sakuranetin treatment decreased the inflammation and the levels of TNF-α, IL-1β and M-CSF in the BALF as well as the levels of NF-κB and 8-iso-PGF-2α in the lungs of the elastase-treated animals. However, this treatment did not affect the changes in lung function.

conclusionThese data emphasize the importance of oxidative stress and metalloproteinase imbalance in the development of emphysema and suggest that sakuranetin is a potent candidate that should be further investigated as an emphysema treatment. This compound may be useful for counteracting lung remodeling and oxidative stress and thus attenuating the development of emphysema.

Indexed as

BaccharisAnimalsFlavanonesFlavonoidsMaleMatrix MetalloproteinasesMiceMice, Inbred C57BLNF-kappa BOxidative StressPancreatic ElastasePhytoalexinsPlant Components, AerialPlant ExtractsPulmonary EmphysemaSwineflavanoneFlavanonesFlavonoidsMatrix MetalloproteinasesNF-kappa BPancreatic ElastasePhytoalexinsPlant Extractssakuranetin

Identifiers

PMID26122092
PMCPMC4489216
OpenAlexW1700083195

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.