Linked Life Data

11792075

Source:http://linkedlifedata.com/resource/pubmed/id/11792075

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-1-15
pubmed:abstractText
Matrix metalloproteinases (MMPs) and cathepsins have been implicated in the pathogenesis of several interstitial lung diseases by their effects on inflammatory processes and extracellular matrix remodelling. The aim of this study was to investigate whether macrophage-derived MMPs and cathepsins are involved in the pathogenesis of sarcoidosis. Therefore the release of MMP-2, MMP-9, and cathepsins B and L from alveolar macrophages (AM) in active pulmonary sarcoidosis was studied and compared to normal controls and patients with pneumonia and fibrosis. Patients with sarcoidosis (n = 11), pulmonary fibrosis (n = 7), and pneumonia (n = 9) and normal controls (n = 10) were enrolled in the study. AM were obtained by bronchoalveolar lavage and cultured without stimulation and in presence of tumor necrosis factor alpha (TNFalpha) and interleukin-10 (IL-10). The release of cathepsins and MMPs as well as IL-10 and TNFalpha was measured in the supernatant of cultured AM by fluorimetric assays and zymography. AM of patients with sarcoidosis and pneumonia spontaneously released more MMP-2 than normal controls. Stimulation with TNFalpha showed no effects on MMP-2 and MMP-9 production. Exogenous IL-10 led partially to an inhibition of the MMP-2 and MMP-9 release. Patients with sarcoidosis produced significantly more IL-10 and TNFalpha than normal controls. This was not observed in patients with fibrosis and pneumonia. The spontaneous release of cathepsins B and L did not differ between the patient groups and normal controls and was not affected by TNFalpha and IL-10. The data show that AM of patients with sarcoidosis and pneumonia release significant amounts of MMP-2. The endogenous production of IL-10 in AM of patients with sarcoidosis and the MMP downregulation by exogenous IL-10 suggest an involvement of IL-10 in MMP regulation. Furthermore the results suggest that the production of MMP-2 is more specific for acute lung injury, rather than for a single lung disease such as sarcoidosis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0190-2148
pubmed:author
pubmed:issnType
Print
pubmed:volume
28
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
55-68
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:11792075-Adult, pubmed-meshheading:11792075-Aged, pubmed-meshheading:11792075-Bronchoalveolar Lavage Fluid, pubmed-meshheading:11792075-Case-Control Studies, pubmed-meshheading:11792075-Cathepsin B, pubmed-meshheading:11792075-Cathepsin L, pubmed-meshheading:11792075-Cathepsins, pubmed-meshheading:11792075-Cysteine Endopeptidases, pubmed-meshheading:11792075-Humans, pubmed-meshheading:11792075-Interleukin-10, pubmed-meshheading:11792075-Macrophages, Alveolar, pubmed-meshheading:11792075-Matrix Metalloproteinase 2, pubmed-meshheading:11792075-Matrix Metalloproteinase 9, pubmed-meshheading:11792075-Middle Aged, pubmed-meshheading:11792075-Pneumonia, Bacterial, pubmed-meshheading:11792075-Pulmonary Fibrosis, pubmed-meshheading:11792075-Sarcoidosis, Pulmonary, pubmed-meshheading:11792075-Tumor Necrosis Factor-alpha
pubmed:articleTitle
Increased production of matrix metalloproteinase-2 in alveolar macrophages and regulation by interleukin-10 in patients with acute pulmonary sarcoidosis.
pubmed:affiliation
Department of Pneumology, University Hospital Charité, Humboldt University Berlin, Germany. matthias.john@charite.de
pubmed:publicationType
Journal Article, In Vitro