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Matrix metalloproteinases in blood from patients with LAM.

Authors: Odajima, N  Betsuyaku, T  Nasuhara, Y  Inoue, H  Seyama, K  Nishimura, M 
Citation: Odajima N, etal., Respir Med. 2009 Jan;103(1):124-9. Epub 2008 Aug 29.
Pubmed: (View Article at PubMed) PMID:18760908
DOI: Full-text: DOI:10.1016/j.rmed.2008.07.017

Pulmonary lymphangioleiomyomatosis (LAM) is characterized by the proliferation of abnormal smooth muscle cells (LAM cells) and destruction of alveolar structure. Immunohistochemical studies suggest that excess matrix metalloproteinases (MMPs) synthesized by LAM cells function in the proteolytic mechanisms of this disease. We postulated MMP levels in the blood are elevated in LAM patients. Serum samples were collected from 36 LAM patients and 25 controls, and gelatinolytic activities were semi-quantified by gelatin zymography. The reliability of serum data for MMP-9 was confirmed by the measurement of MMP-9 concentration in plasma by enzyme-linked immunosorbent assay as well as by gelatin zymography. Serum levels of MMP-9 (0.7+/-0.1 AU), but not MMP-2, were significantly elevated in LAM patients compared with controls (0.1+/-0 AU). Plasma and serum levels of MMP-9 significantly correlated. These results suggest the involvement of MMP-9 in LAM.

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CRRD Object Information
CRRD ID: 5129697
Created: 2011-04-05
Species: All species
Last Modified: 2011-04-05
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.