ISSN:
1436-2813
Keywords:
bronchopleural fistula
;
pericardial fat pad flap
;
cytokine
;
angiogenesis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract An experimental study was conducted to determine whether pericardial fat tissue could induce neovascularization and produce cytokines related to tissue repair. Neovascularization was examined using chick chorioallantoic membranes. Pieces of pericardial fat tissue, omentum, and intercostal muscle were individually placed on a number of chorioallantoic membranes and neovascularization induced by each material was assayed 6 days after the implantation. The intensity of neovascularization was in the order of pericardial fat ≥ omentum 〉 muscle. Cytokines, such as interleukin 1 (IL-1) α and β, tumor necrosis factor-α (TNFα), interferon-γ (IFN-γ), and interleukin 6 (IL-6) were assayed in a culture supernatant of pericardial fat tissue. The latter was obtained 24h after the addition of lipopolysaccharide (LPS) following various incubation times. All cytokines other than IFNγ are known to play a part in tissue repair, whereas IFNγ is negatively related to tissue repair because it inhibits fibroblast growth. The pericardial fat tissue incubated with LPS produced a certain amount of IL-1 on day 1, and TNFα on days 1 and 8, whereafter these values decreased to an undetectable level. Irrespective of the addition of LPS, a large amount of IL-6 was observed in the supernatant of pericardial fat tissue and it was detectable until day 29. On the contrary, INFγ was not detected at any assay time. These observations suggest that a pericardial fat pad flap could possibly be beneficial in the prevention of bronchopleural fistula after pulmonary resection.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00311458
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