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T Hirai, T Masaki, M Kuratsune, N Yorioka, N Kohno
Proliferation of mesangial cells is a hallmark of glomerular disease, and understanding the regulatory mechanisms is critically important. The purpose of this study was to examine the relationship between mesangial cell proliferation and phosphorylated signal transducer and activator of transcription (STAT) 3 and to determine whether the PDGF receptor tyrosine kinase inhibitor STI 571 inhibited mesangial cell proliferation via modulation of STAT3. In this study, we investigated for the first time, the glomerular expression of phosphorylated STAT3 in paraffin sections from animals with experimental mesangial proliferative glomeronephritis...
May 2006: Clinical and Experimental Immunology
M I Schwarz, M R Zamora, T N Hodges, E D Chan, R P Bowler, R M Tuder
STUDY OBJECTIVES: To demonstrate that pulmonary capillaritis and diffuse alveolar hemorrhage (DAH) occur and are isolated to the lung and therefore not part of systemic vasculitis at the time of the DAH episode in rheumatoid arthritis (RA) and mixed connective tissue disease (MCTD). DESIGN: Lung biopsy specimens from patients with DAH were reviewed and those with the histologic features of pulmonary capillaritis were identified. SETTING: The patients were selected from seven Denver-area general hospitals...
June 1998: Chest
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