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      [Outcome of patients with acute exacerbation of idiopathic interstitial fibrosis (IPF) treated with sivelestat and the prognostic value of serum KL-6 and surfactant protein D].

      Nihon Kokyūki Gakkai zasshi = the journal of the Japanese Respiratory Society

      Acute Disease, Aged, Aged, 80 and over, Antigens, Neoplasm, blood, Biological Markers, Chronic Disease, Disease Progression, Female, Glycine, analogs & derivatives, therapeutic use, Humans, Leukocyte Elastase, antagonists & inhibitors, Male, Middle Aged, Mucin-1, Mucins, Pulmonary Fibrosis, complications, diagnosis, drug therapy, Pulmonary Surfactant-Associated Protein D, Respiratory Insufficiency, etiology, Serine Proteinase Inhibitors, Sulfonamides, Treatment Outcome

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          Abstract

          Idiopathic interstitial fibrosis (IPF) is a chronic, usually fatal lung disease of unknown etiology. There are few specific therapies for acute exacerbation of IPF and factors predicting the onset or severity of this syndrome are not clearly understood. A neutrophil elastase inhibitor, sivelestat (ONO-5046) has been commercially available in Japan since 2002. This inhibitor has a potent effect in the treatment of ALI/ARDS. To evaluate the outcome of patients with acute exacerbation of IPF treated with sivelestat and estimate prognostic factors, we investigated 10 patients with acute exacerbation of IPF who were intubated and mechanically ventilated. We analyzed the outcome of patients with acute exacerbation of IPF until day 180 and measured the P/F ratio, PEEP levels, the values of peripheral white blood cell number, and C-reactive protein (CRP) on day 0, 3, 7 after admission. Serum KL-6 and surfactant protein D (SP-D) concentration on day 0 were also analyzed. All patients were treated with sivelestat and methylprednisolone (mPSL) pulse therapy for 3 days from day 0 and maintenance therapy with prednisone (0.5 mg/kg/day) were continued. Of the 10 patients. 4 patients had survived (40%) and 6 patients had died (60%) at day 180 from the onset of acute exacerbation of IPF. In survivors, P/F ratio, PEEP levels, and CRP values significantly improved on day 7 (p<0.05). Serum KL-6 and SP-D were lower in survivors on day 0 (p<0.05). Taken together, serum KL-6 and SP-D may prove valuable as biochemical markers of prognosis in acute exacerbation of IPF. Sivelestat may have potential in the treatment of acute exacerbation of IPF.

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