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  • Title: [Changes of the activities of ET-1 in the serum and BALF of ILD patients and their clinical significance].
    Author: Li Z, Xia S, Hou X.
    Journal: Zhonghua Jie He He Hu Xi Za Zhi; 1999 Jul; 22(7):411-3. PubMed ID: 11775813.
    Abstract:
    OBJECTIVE: To evaluate the roles of the Endothelin-1 (ET-1) in pathogenesis of the patients with interstitial lung disease (ILD). METHODS: The ET-1 activities in the serum and BALF from 10 patients with sarcoidosis, 7 with idiopathic pulmonary fibrosis (IPF) and 8 normal subjects non-smokers were determined using the radio-immunoassay. RESULTS: In the activities of ET-1 in the serum and BALF in the patients with sarcoiosis (62 +/- 29 and 17.0 +/- 2.4) ng/L and in the IPF (77 +/- 71 and 10 +/- 3) ng/L. was higher than those in the normal control subjects (20 +/- 8 and 4.0 +/- 0.6) ng/L. The activities of ET-1 in serum was negative correlated with PaO2 (r = -0.538, P < 0.01). The level of ET-1 in the BALF of the patient was positive correlated with total cells in BALF (r = 0.649, P < 0.01). The levels of ET-1 in the BALF in the sarcoidosis was positive correlated with the percentage of lymphocyte (r = 0.712, P < 0.01) but in patients with IPF was positive correlated with the percentage of neutrophil (r = 0.813, P < 0.01). CONCLUSIONS: ET-1 might play an important role in pathogenic of the patients with sarcoidosis and IPF. The levels of ET-1 can act as the markers of activity of disease.
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