RGD Reference Report - Matrix metalloproteinases with gelatinolytic activity induced by Paracoccidioides brasiliensis infection. - Rat Genome Database

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Matrix metalloproteinases with gelatinolytic activity induced by Paracoccidioides brasiliensis infection.

Authors: Nishikaku, AS  Ribeiro, LC  Molina, RF  Albe, BP  Cunha Cda, S  Burger, E 
Citation: Nishikaku AS, etal., Int J Exp Pathol. 2009 Oct;90(5):527-37. doi: 10.1111/j.1365-2613.2009.00663.x.
RGD ID: 8657058
Pubmed: PMID:19765107   (View Abstract at PubMed)
PMCID: PMC2768151   (View Article at PubMed Central)
DOI: DOI:10.1111/j.1365-2613.2009.00663.x   (Journal Full-text)

Matrix metalloproteinases (MMPs) modulate extracellular matrix turnover, inflammation and immunity. We studied MMP-9 and MMP-2 in experimental paracoccidioidomycosis. At 15 and 120 days after infection (DAI) with virulent Paracoccidioides brasiliensis, MMP-9 was positive by immunohistochemistry in multinucleated giant cells, in mononuclear cells with macrophage and lymphocyte morphologies and also in fungal cells in the lesions of susceptible and resistant mice. Using gelatin zymography, pro- and active MMP-9 and active MMP-2 were detected in all infected mice, but not in controls. Gelatinolytic activity was not observed in P. brasiliensis extracts. Semiquantitative analysis of gelatinolytic activities revealed weak or absent MMP-2 and strong MMP-9 activity in both mouse strains at 15 DAI, declining at 120 DAI. Avirulent P. brasiliensis-infected mice had residual lesions with MMP-9-positive pseudoxantomatous macrophages, but no gelatinase activity at 120 DAI. Our findings demonstrate the induction of MMPs, particularly MMP-9, in experimental paracoccidioidomycosis, suggesting a possible influence in the pattern of granulomas and in fungal dissemination.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  

Objects Annotated

Genes (Rattus norvegicus)
Mmp2  (matrix metallopeptidase 2)
Mmp9  (matrix metallopeptidase 9)

Genes (Mus musculus)
Mmp2  (matrix metallopeptidase 2)
Mmp9  (matrix metallopeptidase 9)

Genes (Homo sapiens)
MMP2  (matrix metallopeptidase 2)
MMP9  (matrix metallopeptidase 9)


Additional Information