Pulmonary & Respiratory Medicine

Koichi Nishimura

Publications

• Research Article
  Vitamin D and Diagnosis of COPD in a Working Population
  Author(s): Koichi Nishimura, Miyoko Ogasawara, Mariko Makita, Kazuhito Nakayasu, Yoshinori Hasegawa and Satoshi MitsumaKoichi Nishimura, Miyoko Ogasawara, Mariko Makita, Kazuhito Nakayasu, Yoshinori Hasegawa and Satoshi Mitsuma
  
  Background: Some epidemiologic studies have proven the possible association between the serum level of 25-hydroxy vitamin D [25(OH)D] and the forced expiratory volume in 1 second (FEV1 ) or chronic obstructive pulmonary disease (COPD). Purpose: To investigate whether serum concentrations of 25(OH)D play a role in the diagnosis of COPD in a working population. Patients and methods: A total of 299 industrial workers aged ≥ 40 years performed spirometry and had their serum level of 25(OH)D measured. Results: The prevalence of COPD defined by the fixed ratio was 14.1%. Mean 25(OH)D levels did not differ significantly between subjects with COPD and those without COPD as defined by the fixed ratio (24.6 ng/mL ± 6.7 ng/ mL in subjects with COPD vs. 24.0 ng/mL ± 5.9 ng/mL in subjects without COPD; not significantly differe.. Read More»
  DOI: 10.4172/2161-105X.1000359

  Abstract PDF