"Matrix Metalloproteinases 7 and 9 in Rheumatoid Arthritis Patients With Interstitial Lung Disease"

"All patients will be subjected to:~A- Complete medical history:~including demographic data (age, sex, disease duration, morning stiffness, joint involvement, smoking, habits of medical importance), articular and extra articular manifestations. Detailed respiratory manifestations.~B- Clinical examination:~* General and local rheumatologic examination.~* Local chest examination (inspection, palpation, percussion, auscultation).~* Assessment of RA disease activity using DAS 28 ESR.~C- Laboratory investigations:~CBC, C-reactive protein, erythrocyte sedimentation rate, antibody status.~D- Radiology and PFT:~PFTs and HRCT chest patterns will be done for patients.~E- MMP measurement:~MMP 7 and 9 concentrations will be measured using enzyme-linked immunosorbent assays.~F. The capillaroscopy procedure"