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Laminin isoforms in atherosclerotic arteries from mice and man.

Rauch, Uwe LU ; Saxena, Amit LU ; Lorkowski, S; Rauterberg, J; Björkbacka, Harry LU ; Durbeej-Hjalt, Madeleine LU and Hultgårdh, Anna LU (2011) In Histology and Histopathology 26(6). p.711-724
Abstract
The properties of the arterial vasculature depend to a large extent on the activities of smooth muscle cells, which, in turn, are determined by their extracellular environment. During pathological conditions, such as atherosclerosis, this interaction is altered. In close proximity to medial smooth muscle cells are basement membrane components, such as different isoforms of laminin. These proteins can have great impact on cellular function via interaction with cell surface integrins. However, knowledge of laminins in smooth muscle cell basement membranes during normal and pathological conditions is scarce. Therefore, we have analyzed the presence of laminin isoforms in atherosclerotic lesions of apolipoprotein E (ApoE)-deficient mice. Our... (More)
The properties of the arterial vasculature depend to a large extent on the activities of smooth muscle cells, which, in turn, are determined by their extracellular environment. During pathological conditions, such as atherosclerosis, this interaction is altered. In close proximity to medial smooth muscle cells are basement membrane components, such as different isoforms of laminin. These proteins can have great impact on cellular function via interaction with cell surface integrins. However, knowledge of laminins in smooth muscle cell basement membranes during normal and pathological conditions is scarce. Therefore, we have analyzed the presence of laminin isoforms in atherosclerotic lesions of apolipoprotein E (ApoE)-deficient mice. Our study revealed that the laminin chain isotype composition within atherosclerotic plaque tissue was different from the chain composition in the media. In addition, obvious differences in laminin chain composition could be observed in areas of the media, which were or were not associated with plaque tissue. Our major findings demonstrate that laminin gamma3 was exclusively present in media associated with plaque tissue. Laminin alpha2 was also enriched in these medial areas. Plaque tissue was predominantly enriched in laminin alpha5 chains. This general distribution applied to lesions both with and without a fibrous cap-like structure. The differential distribution of laminin chains were partially accompanied by changes in the presence of the integrin alpha subunits 7 and V. The distribution of laminin chains in human atherosclerotic arteries, with different size and morphology, grossly resembled their distribution in mouse arteries. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Histology and Histopathology
volume
26
issue
6
pages
711 - 724
publisher
Histology and Histopathology
external identifiers
  • WOS:000289232800006
  • PMID:21472686
  • Scopus:79959894539
ISSN
1699-5848
language
English
LU publication?
yes
id
2f51dac8-f7b9-4c10-a92f-d99fcd613270 (old id 1937371)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/21472686?dopt=Abstract
date added to LUP
2011-05-02 11:06:04
date last changed
2016-10-13 04:23:40
@misc{2f51dac8-f7b9-4c10-a92f-d99fcd613270,
  abstract     = {The properties of the arterial vasculature depend to a large extent on the activities of smooth muscle cells, which, in turn, are determined by their extracellular environment. During pathological conditions, such as atherosclerosis, this interaction is altered. In close proximity to medial smooth muscle cells are basement membrane components, such as different isoforms of laminin. These proteins can have great impact on cellular function via interaction with cell surface integrins. However, knowledge of laminins in smooth muscle cell basement membranes during normal and pathological conditions is scarce. Therefore, we have analyzed the presence of laminin isoforms in atherosclerotic lesions of apolipoprotein E (ApoE)-deficient mice. Our study revealed that the laminin chain isotype composition within atherosclerotic plaque tissue was different from the chain composition in the media. In addition, obvious differences in laminin chain composition could be observed in areas of the media, which were or were not associated with plaque tissue. Our major findings demonstrate that laminin gamma3 was exclusively present in media associated with plaque tissue. Laminin alpha2 was also enriched in these medial areas. Plaque tissue was predominantly enriched in laminin alpha5 chains. This general distribution applied to lesions both with and without a fibrous cap-like structure. The differential distribution of laminin chains were partially accompanied by changes in the presence of the integrin alpha subunits 7 and V. The distribution of laminin chains in human atherosclerotic arteries, with different size and morphology, grossly resembled their distribution in mouse arteries.},
  author       = {Rauch, Uwe and Saxena, Amit and Lorkowski, S and Rauterberg, J and Björkbacka, Harry and Durbeej-Hjalt, Madeleine and Hultgårdh, Anna},
  issn         = {1699-5848},
  language     = {eng},
  number       = {6},
  pages        = {711--724},
  publisher    = {ARRAY(0x8e962f0)},
  series       = {Histology and Histopathology},
  title        = {Laminin isoforms in atherosclerotic arteries from mice and man.},
  volume       = {26},
  year         = {2011},
}