Evidence map›Paper›PMID 26846335›Full record

ArticleRespiratory research2016

Pirfenidone and nintedanib modulate properties of fibroblasts and myofibroblasts in idiopathic pulmonary fibrosis.

Siri T Lehtonen, Anniina Veijola, Henna Karvonen, Elisa Lappi-Blanco, Raija Sormunen, Saara Korpela, Ulrika Zagai, Magnus C Sköld, Riitta Kaarteenaho

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed, 1 pooled it
15.4field-weighted citation impact, top 1% 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

57 citing papers in PubMed, 1 synthesis or guideline pooled it, 125 citations in OpenAlex.

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  19. Upcoming treatments for morphea.Immunity, inflammation and disease · 2021
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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

9 authors at 4 institutions in 3 countries.

Siri T LehtonenDepartment of Anatomy and Cell Biology, Cancer and Translational Medicine Research Unit, University of Oulu, Aapistie 7 A, FIN-90 220, Oulu, Finland. siri.lehtonen@oulu.fi.
Anniina VeijolaDepartment of Internal Medicine, Respiratory Research Unit and Medical Research Center, Oulu University Hospital, Aapistie 5 A, FIN-90220, Oulu, Finland. anniveijo@windowslive.com.
Henna KarvonenDepartment of Internal Medicine, Respiratory Research Unit and Medical Research Center, Oulu University Hospital, Aapistie 5 A, FIN-90220, Oulu, Finland. Henna.Karvonen@oulu.fi.
Elisa Lappi-BlancoDepartment of Pathology, Oulu University Hospital, P.O. Box 50, FIN90029, Oulu, Finland. elisa.lappi-blanco@ppshp.fi.
Raija SormunenDepartment of Pathology, Oulu University Hospital, P.O. Box 50, FIN90029, Oulu, Finland. raija.sormunen@oulu.fi.
Saara KorpelaDepartment of Anatomy and Cell Biology, Cancer and Translational Medicine Research Unit, University of Oulu, Aapistie 7 A, FIN-90 220, Oulu, Finland. o3kosa01@students.oamk.fi.
Ulrika ZagaiDepartment of Medical Epidemiology & Biostatistics, Karolinska Institutet, SE-17177, Stockholm, Sweden. Ulrika.Zagai@ki.se.
Magnus C SköldRespiratory Medicine Unit, Department of Medicine Solna and Centre for Molecular Medicine, Karolinska Institutet, SE-17177, Stockholm, Sweden. Magnus.Skold@ki.se.
Riitta KaarteenahoDepartment of Internal Medicine, Respiratory Research Unit and Medical Research Center, Oulu University Hospital, Aapistie 5 A, FIN-90220, Oulu, Finland. Riitta.Kaarteenaho@kuh.fi.
Oulu University Hospital · FIKarolinska Institutet · SEUniversity of Eastern Finland · FIUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIdiopathic pulmonary fibrosis (IPF) is an incurable lung disease with a poor prognosis. Fibroblasts and myofibroblasts are the key cells in the fibrotic process. Recently two drugs, pirfenidone and nintedanib, were approved for clinical use as they are able to slow down the disease progression. The mechanisms by which these two drugs act in in vitro cell systems are not known. The aim of this study was therefore to examine the effects of pirfenidone and nintedanib on fibroblasts and myofibroblasts structure and function established from patients with or without IPF.

methodsStromal cells were collected and cultured from control lung (n = 4) or IPF (n = 7). The cells were treated with pirfenidone and/or nintedanib and the effect of treatment was evaluated by measuring cell proliferation, alpha smooth muscle actin (α-SMA) and fibronectin expression by Western analysis and/or immunoelectron microscopy, ultrastructural properties by transmission electron microscopy and functional properties by collagen gel contraction and invasion assays.

resultsBoth pirfenidone and nintedanib reduced in vitro proliferation of fibroblastic cells in a dose dependent manner. The number of cells from control lung was reduced to 47 % (p = 0.04) and of IPF cells to 42 % (p = 0.04) by 1 mM pirfenidone and correspondingly to 67 % (p = 0.04) and 68 % (p = 0.04), by 1 μM nintedanib. If both drugs were used together, a further reduced proliferation was observed. Both pirfenidone and nintedanib were able to reduce the amount of α-SMA and the myofibroblastic appearance although the level of reduction was cell line dependent. In functional assays, the effect of both drugs was also variable.

conclusionsWe conclude that the ultrastructure and function of fibroblasts and myofibroblasts are affected by pirfenidone and nintedanib. Combination of the drugs reduced cell proliferation more than either of them individually. Human lung derived cell culture systems represent a potential platform for screening and testing drugs for fibrotic diseases.

Indexed as

Anti-Inflammatory Agents, Non-SteroidalCell ProliferationCells, CulturedDose-Response Relationship, DrugDrug Therapy, CombinationFibroblastsHumansIdiopathic Pulmonary FibrosisIndolesMyofibroblastsPyridonesTreatment OutcomeAnti-Inflammatory Agents, Non-SteroidalIndolesnintedanibpirfenidonePyridones

Identifiers

PMID26846335
PMCPMC4743320
OpenAlexW2267777024

What OpenQuestion holds

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Registered trials

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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.