中文摘要 |
本研究是取樣自6 家異氰酸類工廠,共採訪了135 位勞工,並進一步探討其有或無呼吸道、皮膚或眼睛症狀者,與體內異氰酸類專一性IgE抗體之產生,及其與第一型及第二型人類組織複合物抗原之間的關連性。經比較 15 位作業場所有關之臨床症狀患者與 14 位對照組勞工後發現,第二型人類組織複合物抗原中的HLA-DQ1 (Chi-square test, P< 0.005)、以及第一型人類組織複合物抗原中的HLA-B40 (Chi-square test, P< 0.05) 與工作場所有關之過敏病,包括呼吸道、皮膚或眼睛症狀,有正相關性。至於血清內異氰酸類專一性 IgE 抗體,在受測試的135 位勞工中,包括與作業場所有關之呼吸道症狀 ( 16人次 , 11.7% ),皮膚病症狀 ( 11人次 , 7.4% ) 及眼睛症狀者 ( 3人次 , 2.2% ) ,全呈陰性反應 (<0.35 KUA /L)。故本研究結果顯示,異氰酸類所引起之臨床症狀與患者體內IgE 抗體濃度無關。但是第二型人類組織複合物抗原 HLA-DQ1、以及第一型人類組織複合物抗原 HLA-B40對於勞工是否會對異氰酸類發生過敏免疫反應,可能具有非常重要的影響。 |
英文摘要 |
We have undertaken a case study of the association between HLA allele frequency and specific IgE antibody to isocyanate coupled to immunoCAP (Pharmacia CAP System RAST FEIA) among 135 isocyanate workers. We found a positive association of excess of DQ1 (Chi-square test, P<0.005), and HLA-B40 (Chi-square test, P<0.05) in the 15 work-related isocyanates sensitized cases when compared with 14 referents . As to the serum IgE level , however, surprisingly, all the 135 workers, both in the control and workplace-related diseased group, including 16 workers with respiratory symptoms, 11 workers with dermatologic symptoms as well as 3 workers with eye symptoms, showed negative specific IgE response to TDI or MDI in the RAST test. These findings suggest TDI ,MDI-induced symptoms are non-IgEdependent mediated features, and both of MHC class II allele DQ1 and MHC class I allele B40 are possible important determinants of the specificity of the immune response to a TDI or MDI antigen. |