PMID- 20615325 OWN - NLM STAT- MEDLINE DCOM- 20110202 LR - 20161020 IS - 1539-6304 (Electronic) IS - 1088-5412 (Linking) VI - 31 IP - 3 DP - 2010 May-Jun TI - The role of atopy in the clinical course of pulmonary sarcoidosis in the Japanese population. PG - 238-43 LID - 10.2500/aap.2010.31.3336 [doi] AB - Sarcoidosis is a multisystem disorder characterized by a T-helper 1 (Th1)-mediated immune response. Conversely, atopy is characterized by the presence of a specific immunoglobulin E (IgE) E response in association with a Th2-type immune response. Several epidemiological studies have shown that atopic status influences disease activity and clinical course for several Th1-mediated diseases. The aim of this study was to evaluate associations between atopic status and clinical findings of sarcoidosis. We further evaluated the impact of atopic status on the clinical course of pulmonary sarcoidosis. We defined atopy as a positive specific IgE response to at least one common inhaled allergen (multiple antigen simultaneous test scores, lumicount of >1.01). Subjects comprised 134 patients given a diagnosis of sarcoidosis between 2000 and 2006, divided into atopic and nonatopic groups. Several clinical findings were compared between the two groups. Furthermore, 100 subjects observed 2 years after diagnosis were divided into resolving and persistent clinical course groups according to chest radiography and associations with atopic status were evaluated. Atopy was more prevalent among men than women (p = 0.009) and subjects with atopy were younger (p = 0.002) and showed less frequent lung parenchymal lesions (stages II and III; p = 0.018) compared with subjects without atopy. The prevalence of atopy was higher in the resolving clinical course group than in the persistent clinical course group (p = 0.002) and this association was independent of sex, age, presence of lung parenchymal lesions, and presence of extrapulmonary lesions (p = 0.037). Classification of sarcoidosis based on atopic status might be useful for predicting the clinical course of pulmonary sarcoidosis. FAU - Hattori, Takeshi AU - Hattori T AD - First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan. FAU - Konno, Satoshi AU - Konno S FAU - Takahashi, Ayumu AU - Takahashi A FAU - Isada, Akira AU - Isada A FAU - Shigemura, Masahiko AU - Shigemura M FAU - Matsuno, Kazuhiko AU - Matsuno K FAU - Shimizu, Chikara AU - Shimizu C FAU - Hizawa, Nobuyuki AU - Hizawa N FAU - Yamaguchi, Etsuro AU - Yamaguchi E FAU - Nishimura, Masaharu AU - Nishimura M LA - eng PT - Journal Article PL - United States TA - Allergy Asthma Proc JT - Allergy and asthma proceedings JID - 9603640 RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adolescent MH - Adult MH - Age Factors MH - Aged MH - Allergens/immunology/*metabolism MH - Disease Progression MH - Female MH - Humans MH - Immunoglobulin E/blood MH - Japan MH - Male MH - Middle Aged MH - Retrospective Studies MH - Sarcoidosis, Pulmonary/blood/diagnosis/*epidemiology/*physiopathology MH - Sex Factors EDAT- 2010/07/10 06:00 MHDA- 2011/02/03 06:00 CRDT- 2010/07/10 06:00 PHST- 2010/07/10 06:00 [entrez] PHST- 2010/07/10 06:00 [pubmed] PHST- 2011/02/03 06:00 [medline] AID - 10.2500/aap.2010.31.3336 [doi] PST - ppublish SO - Allergy Asthma Proc. 2010 May-Jun;31(3):238-43. doi: 10.2500/aap.2010.31.3336.