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New experimental approach to study host tissue response to surgical mesh materials in vivo

Laschke, MW; Haufel, JM; Thorlacius, Henrik LU and Menger, MD (2005) In Journal of Biomedical Materials Research. Part A 74A(4). p.696-704
Abstract
Implantation of surgical meshes is a common procedure to increase abdominal wall stability in hernia repair. To improve biocompatibility of the implants, sophisticated in vivo animal models are needed to study inflammation and incorporation of biomaterials. Herein, we have established a new model that allows for the quantitative analysis of host tissue response and vascular ingrowth into surgical mesh materials in vivo. Ultrapro meshes were implanted into dorsal skinfold chambers of Syrian golden hamsters. Angiogenesis, microhemodynamics, microvascular permeability, and leukocyte-endothelial cell interaction of the host tissue were analyzed in response to material implantation over a 2-week period using intravital fluorescence microscopy.... (More)
Implantation of surgical meshes is a common procedure to increase abdominal wall stability in hernia repair. To improve biocompatibility of the implants, sophisticated in vivo animal models are needed to study inflammation and incorporation of biomaterials. Herein, we have established a new model that allows for the quantitative analysis of host tissue response and vascular ingrowth into surgical mesh materials in vivo. Ultrapro meshes were implanted into dorsal skinfold chambers of Syrian golden hamsters. Angiogenesis, microhemodynamics, microvascular permeability, and leukocyte-endothelial cell interaction of the host tissue were analyzed in response to material implantation over a 2-week period using intravital fluorescence microscopy. Mesh implantation resulted in a short-term activation of leukocytes, reflected by leukocyte accumulation and adherence in postcapillary venules. This cellular inflammatory response was accompanied by an increase of mac-romolecular leakage, indicating loss of integrity of venular endothelial cells. Angiogenesis started at day 3 after implantation by protrusion of capillary sprouts, originating from the host microvasculature. Until day 10, these sprouts interconnected with each other to form a new microvascular network. At day 14, the inflammatory response had disappeared and the vascular ingrowth was completed. Histology confirmed the formation of granulation tissue with adequate incorporation of the mesh filaments within the host tissue. We conclude that this novel model of surgical mesh implantation is a useful experimental approach to analyze host tissue response and vascular ingrowth of newly devised materials for hernia repair. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
angiogenesis, inflammation, surgical mesh implant, biocompatibility, dorsal skinfold chamber
in
Journal of Biomedical Materials Research. Part A
volume
74A
issue
4
pages
696 - 704
publisher
John Wiley & Sons
external identifiers
  • wos:000231513000021
  • pmid:16037956
  • scopus:24044520995
ISSN
1552-4965
DOI
10.1002/jbm.a.30371
language
English
LU publication?
yes
id
ed4df4ed-1a67-4439-a32c-b95b865734a2 (old id 226291)
date added to LUP
2007-08-20 13:23:37
date last changed
2017-08-27 04:25:48
@article{ed4df4ed-1a67-4439-a32c-b95b865734a2,
  abstract     = {Implantation of surgical meshes is a common procedure to increase abdominal wall stability in hernia repair. To improve biocompatibility of the implants, sophisticated in vivo animal models are needed to study inflammation and incorporation of biomaterials. Herein, we have established a new model that allows for the quantitative analysis of host tissue response and vascular ingrowth into surgical mesh materials in vivo. Ultrapro meshes were implanted into dorsal skinfold chambers of Syrian golden hamsters. Angiogenesis, microhemodynamics, microvascular permeability, and leukocyte-endothelial cell interaction of the host tissue were analyzed in response to material implantation over a 2-week period using intravital fluorescence microscopy. Mesh implantation resulted in a short-term activation of leukocytes, reflected by leukocyte accumulation and adherence in postcapillary venules. This cellular inflammatory response was accompanied by an increase of mac-romolecular leakage, indicating loss of integrity of venular endothelial cells. Angiogenesis started at day 3 after implantation by protrusion of capillary sprouts, originating from the host microvasculature. Until day 10, these sprouts interconnected with each other to form a new microvascular network. At day 14, the inflammatory response had disappeared and the vascular ingrowth was completed. Histology confirmed the formation of granulation tissue with adequate incorporation of the mesh filaments within the host tissue. We conclude that this novel model of surgical mesh implantation is a useful experimental approach to analyze host tissue response and vascular ingrowth of newly devised materials for hernia repair.},
  author       = {Laschke, MW and Haufel, JM and Thorlacius, Henrik and Menger, MD},
  issn         = {1552-4965},
  keyword      = {angiogenesis,inflammation,surgical mesh implant,biocompatibility,dorsal skinfold chamber},
  language     = {eng},
  number       = {4},
  pages        = {696--704},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Biomedical Materials Research. Part A},
  title        = {New experimental approach to study host tissue response to surgical mesh materials in vivo},
  url          = {http://dx.doi.org/10.1002/jbm.a.30371},
  volume       = {74A},
  year         = {2005},
}