Evidence map›Paper›PMID 23758162›Full record

ArticleBritish journal of pharmacology2013

A novel macrolide/fluoroketolide, solithromycin (CEM-101), reverses corticosteroid insensitivity via phosphoinositide 3-kinase pathway inhibition.

Y Kobayashi, H Wada, C Rossios, D Takagi, C Charron, P J Barnes, K Ito

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
8.3field-weighted citation impact, top 2% 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

30 citing papers in PubMed, 80 citations in OpenAlex.

  1. Article
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  5. Clinical implications of asthma endotypes and phenotypes.Allergy and asthma proceedings · 2022
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  8. Review
  9. Progress in the mechanism and targeted drug therapy for COPD.Signal transduction and targeted therapy · 2020
    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

7 authors at 3 institutions in 3 countries.

Y KobayashiAirway Disease Section, National Heart and Lung Institute, Imperial College London, London, UK.
H Wada
C Rossios
D Takagi
C Charron
P J Barnes
K Ito
Imperial College London · GBLung Institute · USKyorin University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeCorticosteroid insensitivity is a major therapeutic problem for some inflammatory diseases including chronic obstructive pulmonary disease (COPD), and it is known to be induced by reduced histone deacetylase (HDAC)-2 activities via activation of the phosphoinositide 3-kinase (PI3K) pathway. The aim of this study is to evaluate effects of a novel macrolide/fluoroketolide, solithromycin (SOL, CEM-101), on corticosteroid sensitivity induced by oxidative stress. EXPERIMENTAL APPROACH: Corticosteroid sensitivity was determined by IC50/EC50 of dexamethasone (Dex) on TNF-α-induced CXCL8 production in U937 monocytic cell line and peripheral blood mononuclear cells (PBMC) from COPD patients. Activities of HDAC and protein phosphatase 2A (PP2A) were measured by fluorescence-based assay in cells exposed to hydrogen peroxide (H2O2). We also investigated steroid insensitive airway neutrophilia in cigarette smoke exposed mice in vivo. KEY

resultsSOL (10 μM) restored Dex sensitivity in PBMC from COPD patients, H2O2-treated U937 cells and phorbol 12-myristate 13-acetate-differentiated U937 cells. In addition, SOL restored HDAC activity with concomitant inhibition of Akt phosphorylation as surrogate marker of PI3K activation. The inhibition of Akt phosphorylation by SOL was due to increased PP2A phosphatase activity, which was reduced in COPD and oxidative stress model. Other known macrolides, such as eryhthromycin, clarithromycin and azithromycin, were significantly less effective in these responses. In cigarette smoke-exposed mice, SOL (100 mg kg(-1), po) showed significant but weak inhibition of neutrophilia, whereas Dex (10 mg kg(-1), p.o.) showed no such effect. However, a combination of SOL and Dex inhibited neutrophilia by over 50%. CONCLUSIONS AND IMPLICATIONS: SOL has potential as novel therapy for corticosteroid-insensitive diseases such as COPD.

Indexed as

Phosphoinositide-3 Kinase InhibitorsAdrenal Cortex HormonesAnimalsAnti-Bacterial AgentsCells, CulturedDexamethasoneDrug ResistanceHistone Deacetylase 2HumansHydrogen PeroxideInterleukin-8Leukocytes, MononuclearMacrolidesMaleMice, Inbred C57BLNeutrophilsAdrenal Cortex HormonesAnti-Bacterial AgentsCXCL8 protein, humanDexamethasoneHDAC2 protein, humanHistone Deacetylase 2Hydrogen PeroxideInterleukin-8MacrolidesPhosphoinositide-3 Kinase InhibitorsProtein Phosphatase 2Proto-Oncogene Proteins c-aktSmokesolithromycinTriazolesTumor Necrosis Factor-alpha

Identifiers

PMID23758162
PMCPMC3696326
OpenAlexW1499791383

What OpenQuestion holds

Textmetadata
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.