Tokyo Metropolitan Research Institute

Kōtō-ku, Japan

Tokyo Metropolitan Research Institute

Kōtō-ku, Japan

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Umehara H.,Kanazawa Medical University | Okazaki K.,Kansai Medical University | Masaki Y.,Kanazawa Medical University | Kawano M.,Kanazawa University | And 54 more authors.
Modern Rheumatology | Year: 2012

IgG4-related disease (IgG4RD) is a novel clinical disease entity characterized by elevated serum IgG4 concentration and tumefaction or tissue infiltration by IgG4-positive plasma cells. IgG4RD may be present in a certain proportion of patients with a wide variety of diseases, including Mikulicz's disease, autoimmune pancreatitis, hypophysitis, Riedel thyroiditis, interstitial pneumonitis, interstitial nephritis, prostatitis, lymphadenopathy, retroperitoneal fibrosis, inflammatory aortic aneurysm, and inflammatory pseudotumor. Although IgG4RD forms a distinct, clinically independent disease category and is attracting strong attention as a new clinical entity, many questions and problems still remain to be elucidated, including its pathogenesis, the establishment of diagnostic criteria, and the role of IgG4. Here we describe the concept of IgG4RD and up-to-date information on this emerging disease entity. © Japan College of Rheumatology 2011.


Kanda I.,Ehime University | Ohara T.,Japan National Institute of Environmental Studies | Nataami T.,HAO Engineering Consultant Office | Nitta H.,Japan National Institute of Environmental Studies | And 6 more authors.
Journal of Exposure Science and Environmental Epidemiology | Year: 2013

We developed an exposure estimation model for an epidemiological study on the effect of traffic-related air pollutants on respiratory diseases. The model estimates annual average outdoor concentration of nitrogen oxides (NOx) and elemental carbon (EC). The model is composed of three nested plume dispersion type submodels treating different spatial scales from a few meters to tens of kilometers. The emissions from road traffic was estimated at high spatial resolution along the paths of roads taking into account the effects of individual building shape and traffic signals to secure accuracy near trunk roads where most of the subjects of the epidemiological study resided. Model performance was confirmed by field measurements at permanent local government stations and purpose-built temporary stations; the latter supplemented roadside monitoring points and provided EC concentrations, which are not measured routinely. We infer that EC emissions were underestimated by using the available database because there were significant contributions to EC concentrations from sources that did not emit much NOx. An adjustment concentration yielded good agreement between model estimates and field measurements. © 2013 Nature America, Inc.

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