[Clinical study of patients with idiopathic interstitial pneumonia accompanied by diabetes mellitus].
We retrospectively analyzed the clinical presentation of non-insulin-dependent diabetes mellitus (NIDDM) in patients with idiopathic interstitial pneumonia (IIP). Between 1977 to 1993, 75 patients with IIP were admitted to our hospital. None had previously received corticosteroids. To compare the incidence of NIDDM with other pulmonary diseases and the degree of obesity, we randomly selected 200 patients without IIP who were admitted to our hospital in 1992 and 160 healthy subjects. We analyzed weight indices using two methods, body mass index and weight as a percentage of ideal body weight. Eighteen patients (24.0%) with IIP and 9 patients (4.5%) in the disease control group had NIDDM (p < 0.001). As the incidence of NIDDM is approximately 10% in Japan, it was suggested that these IIP patients showed a high prevalence of accompanying NIDDM. Among females, patients with IIP showed a strong tendency toward obesity compared with the healthy control subjects (p < 0.001), but this was not noted among males. Female patients with NIDDM showed a strong tendency toward obesity compared to those without NIDDM, but this was not noted among males. Although the correlation between IIP and NIDDM is unclear, we noted recent reports that advanced glycation and products can stimulate macrophages to secrete tumor necrosis factor and interleukin-1 in vitro, and can stimulate free radical generation by early glycation products in vitro. These cytokines and oxygen radicals may play a role in the pathogenesis or induction of IIP.
Department of Pulmonary Medicine, Jichi Medical School, Tochigi, Japan.
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Suga
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Sugiyama
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Kitamura
D003924:Diabetes Mellitus, Type 2 / Q000150:complications* / Q000453:epidemiology; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D017563:Lung Diseases, Interstitial / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications; D011897:Random Allocation; D012189:Retrospective Studies