Evidence map›Paper›PMID 34078598›Full record

ArticleScience advances2021

Ultrafast self-gelling powder mediates robust wet adhesion to promote healing of gastrointestinal perforations.

Xin Peng, Xianfeng Xia, Xiayi Xu, Xuefeng Yang, Boguang Yang, Pengchao Zhao, Weihao Yuan, Philip Wai Yan Chiu, Liming Bian

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
37.4field-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

69 citing papers in PubMed, 280 citations in OpenAlex.

  1. Article
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  7. Recent advances onFundamental research · 2026
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  8. Bioabsorbable Endovascular Adhesive Tape (BEAT) for Improving Vascular Regeneration.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
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  19. Article
  20. Charge balance transition enabledBioactive materials · 2025
    Article

9 more citing papers are in PubMed but not listed here.

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 2 institutions in 2 countries.

Xin PengDepartment of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR 999077, China.ORCID 0000-0003-3003-6023
Xianfeng XiaDepartment of Endoscopy, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.ORCID 0000-0003-4718-8189
Xiayi XuDepartment of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR 999077, China.ORCID 0000-0003-4946-9478
Xuefeng YangDepartment of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR 999077, China.ORCID 0000-0003-3134-2065
Boguang YangDepartment of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR 999077, China.ORCID 0000-0003-2142-9319
Pengchao ZhaoDepartment of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR 999077, China.ORCID 0000-0003-4987-5513
Weihao YuanDepartment of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR 999077, China.ORCID 0000-0002-5417-5813
Philip Wai Yan ChiuChow Yuk Ho Technology Center for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong SAR 999077, China. philipchiu@surgery.cuhk.edu.hk lbian@cuhk.edu.hk.ORCID 0000-0001-9292-112X
Liming BianDepartment of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR 999077, China. philipchiu@surgery.cuhk.edu.hk lbian@cuhk.edu.hk.ORCID 0000-0003-4739-0918
Chinese University of Hong Kong · HKSun Yat-sen University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Achieving strong adhesion of bioadhesives on wet tissues remains a challenge and an acute clinical demand because of the interfering interfacial water and limited adhesive-tissue interactions. Here we report a self-gelling and adhesive polyethyleneimine and polyacrylic acid (PEI/PAA) powder, which can absorb interfacial water to form a physically cross-linked hydrogel in situ within 2 seconds due to strong physical interactions between the polymers. Furthermore, the physically cross-linked polymers can diffuse into the substrate polymeric network to enhance wet adhesion. Superficial deposition of PEI/PAA powder can effectively seal damaged porcine stomach and intestine despite excessive mechanical challenges and tissue surface irregularities. We further demonstrate PEI/PAA powder as an effective sealant to enhance the treatment outcomes of gastric perforation in a rat model. The strong wet adhesion, excellent cytocompatibility, adaptability to fit complex sites, and easy synthesis of PEI/PAA powder make it a promising bioadhesive for numerous biomedical applications.

Identifiers

PMID34078598
PMCPMC8172133
OpenAlexW3163954240

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.