Cited by 398Cellular Mechanics and InteractionsBone Tissue Engineering MaterialsTissue Engineering and Regenerative Medicine

The DOI matches its Crossref record; 71 of the 73 references it cites were found in a registry or an index, and 1 are not checked yet; none of the 30 sources its claims cite is checked for support yet.

Characterization of topographical effects on macrophage behavior in a foreign body response model

Open access

Abstract

Current strategies to limit macrophage adhesion, fusion and fibrous capsule formation in the foreign body response have focused on modulating material surface properties. We hypothesize that topography close to biological scale, in the micron and nanometric range, provides a passive approach without bioactive agents to modulate macrophage behavior. In our study, topography-induced changes in macrophage behavior was examined using parallel gratings (250 nm-2 mum line width) imprinted on poly(epsilon-caprolactone) (PCL), poly(lactic acid) (PLA) and poly(dimethyl siloxane) (PDMS). RAW 264.7 cell adhesion and elongation occurred maximally on 500 nm gratings compared to planar controls over 48 h. TNF-alpha and VEGF secretion levels by RAW 264.7 cells showed greatest sensitivity to topographical effects, with reduced levels observed on larger grating sizes at 48 h. In vivo studies at 21 days showed reduced macrophage adhesion density and degree of high cell fusion on 2 mum gratings compared to planar controls. It was concluded that topography affects macrophage behavior in the foreign body response on all polymer surfaces examined. Topography-induced changes, independent of surface chemistry, did not reveal distinctive patterns but do affect cell morphology and cytokine secretion in vitro, and cell adhesion in vivo particularly on larger size topography compared to planar controls.

Checked 2026-10-05 · 1 reference not checked yet

Overview

Integrity signals

Registry

Crossref · 10.1016/j.biomaterials.2010.01.074

Cites

71 of 72 references verified0 citation errors · 0 not checkable

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Verification

Claims the paper makes

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Show all 54 claims

  • It may state two separate claims as one. 36
  • Probably not a substantial claim. 10
45 of 45
  • The paper relies on this without support.

    The RAW 264.7 murine macrophage cell line is a valid model for macrophage behavior in the foreign body response.

    “Adherent murine macrophage cell line, RAW 264.7 (ATCC, Manassas, VA), was grown in Dulbecco's Modified Eagle's Medium (DMEM) cell culture media supplemented with 10% fetal bovine serum, penicillin (100 μg/mL) and streptomycin (100 μg/mL).”
  • The paper relies on this without support.

    The rat cage implant model reflects the foreign body response relevant to clinical implants.

    “Samples of PCL gratings nanoimprinted on Mylar were evaluated in rats using the cage implant model to determine the effect of topography on foreign body reaction.”
  • The paper relies on this without support.

    Differences in surface chemistry among PCL, PLA, and PDMS do not confound the observed effects of topography.

    “RAW 264.7 was cultured on 3 different types of polymers, PCL, PLA and PDMS gratings, to examine macrophage response to topography independent of surface chemistry.”
3 of 3

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Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Day-21 adhesion trend is reversed in the abstract

    Major

    The abstract says macrophage adhesion density was lower on 2 μm gratings than on planar controls at 21 days. The results report a statistically significant increase on those gratings at Day 21, reversing the stated conclusion.

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Metadata

Authors
Chen, S., Jones, J. A., Xu, Y., Low, H.-Y., Anderson, J. M., & Leong, K. W.
Affiliations
  • Johns Hopkins University (US)
  • Case Western Reserve University (US)
  • Institute of Materials Research and Engineering (SG)
  • Duke University (US)
Corresponding author
Leong, Kam W.
Venue
Biomaterials
Publisher
Elsevier BV
Published
2010-05
Volume
31
Issue
13
Pages
3479-3491
ISSN
0142-9612 (ISSN-L)
OpenAlex
W2038846800
Cited by
389
References
73
Citations by year
2026: 13 · 2025: 21 · 2024: 21 · 2023: 24 · 2022: 30 · 2021: 38 · 2020: 28 · 2019: 31 · 2018: 23 · 2017: 32 · 2016: 24 · 2015: 24 · 2014: 30 · 2013: 16 · 2012: 15
FWCI
7.00
Type
journal article
Language
en
Open access
Locations
  • Biomaterials (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • DukeSpace (Duke University) (submittedVersion, cc-by-nc-nd)
Funders
National Institutes of Health (EB000282, HL83008)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Physical Sciences › Engineering › Biomedical Engineering › Bone Tissue Engineering Materials
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
Keywords
topography, foreign body reaction, cell adhesion, cell fusion, fibrous capsule formation, TNF-α, vascular endothelial growth factor, RAW 264.7 macrophages, polycaprolactone, polylactic acid, polydimethylsiloxane
MeSH terms
Animals, Cell Line, Foreign-Body Reaction, Macrophages, Microscopy, Electron, Scanning, Models, Biological, Polymers, Surface Properties, Tumor Necrosis Factor-alpha, Vascular Endothelial Growth Factor A, Mice

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