Evidence map›Paper›PMID 32299413›Full record

ArticleBMC pulmonary medicine2020

Attenuation of intermittent hypoxia-induced apoptosis and fibrosis in pulmonary tissues via suppression of ER stress activation.

Zhihui Shi, Linhao Xu, Hui Xie, Ruoyun Ouyang, Ya Ke, Rui Zhou, Wing-Ho Yung

Open access · goldAbstract read
In one paragraph

Article in BMC pulmonary medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 12% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

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  6. [Aloe-emodin inhibits scar tissue fibrosis through thrombospondin-1-PI3k-Akt pathway].Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2025
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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 1 country.

Zhihui ShiDepartment of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central-South University, Changsha, China.
Linhao XuSchool of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China.
Hui XieSchool of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China.
Ruoyun OuyangDepartment of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central-South University, Changsha, China.
Ya KeSchool of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China.
Rui ZhouDepartment of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central-South University, Changsha, China. zhourui2355@sina.com.
Wing-Ho YungSchool of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China. whyung@cuhk.edu.hk.
Chinese University of Hong Kong · CNCentral South University · CNSecond Xiangya Hospital of Central South University · CN

Funding

Health and Medical Research Grant of the Hong Kong Government 04153446
6 · The paper itself

Abstract

backgroundObstructive sleep apnea (OSA) is associated with pulmonary fibrosis and endothelial apoptosis in pulmonary tissues. Chronic intermittent hypoxia (IH) is considered to be the primary player in OSA, but the mechanisms underlying its effect on pulmonary tissues are unknown. Endoplasmic reticulum (ER) stress induced by IH treatment plays an important role in accelerating the process of fibrosis and induction of apoptosis.

methodsMice were placed in IH chambers for 4 weeks with an oscillating oxygen (O

resultsAfter 4 weeks of IH treatment, the expressions of two ER stress markers, glucose regulated protein-78 (Grp78) and transcription factor C/EBP homologous protein (CHOP) were increased which was prevented by administration of the ER stress attenuator, TUDCA. The expressions of PERK, but not those of ATF-6 and IRE-1, were increased. The effects of IH were accompanied by an increased number of apoptotic cells and increased expressions of cleaved caspase-3 and caspase-12 in pulmonary tissues. In addition, histological examination suggested the presence of fibrosis after chronic IH treatment, indicated by increased expression of collagen, which was associated with the up-regulation of TGF-β1 and TSP-1 that are known to promote fibrosis. Similarly, TUDCA could reduce the extent of fibrotic area and the expression levels of these proteins.

conclusionsIt reveals the roles of ER stress, especially the PERK pathway, in IH induced apoptosis and fibrosis in pulmonary tissues that might underlie the pulmonary complications observed in OSA.

Indexed as

AnimalsApoptosisCaspase 12Caspase 3Endoplasmic Reticulum Chaperone BiPEndoplasmic Reticulum StressFibrosisHypoxiaLungMaleMiceMice, Inbred C57BLSignal TransductionTaurochenodeoxycholic AcidTranscription Factor CHOPCasp12 protein, mouseCasp3 protein, mouseCaspase 12Caspase 3Endoplasmic Reticulum Chaperone BiPHspa5 protein, mouseTaurochenodeoxycholic AcidTranscription Factor CHOPursodoxicoltaurineApoptosisEndoplasmic reticulum stressFibrosisIntermittent hypoxiaObstructive sleep apnea

Identifiers

PMID32299413
PMCPMC7161195
OpenAlexW3016416109

What OpenQuestion holds

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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.