Objectives: In the present study, we have sought to establish the clinical and immunological characteristics of Japanese patients with interstitial lung disease (ILD). Methods: Serum samples from 35 patients of ILD we...Objectives: In the present study, we have sought to establish the clinical and immunological characteristics of Japanese patients with interstitial lung disease (ILD). Methods: Serum samples from 35 patients of ILD were screened for autoantibodies using RNA and protein immunoprecipitation assays. Patients with or without serum antibodies to aminoacyl tRNA synthetases (ARS) were assessed clinically and compared. Results: Sera from 12 of 35 (34%) patients with ILD (mean age at onset = 49.7 yrs;range 27 - 65 yrs) were found to contain anti-ARS antibodies (anti-EJ: 3 patients;anti-OJ: 2 patients;anti-PL-12: 3 patients;anti-KS: 4 patients). Nine of the 12 (75%) were female. Six (50%) had Raynaud’s phenomenon, 5 (42%) had arthralgia/arthritis and four (33%) had rheumatoid factor. Lung biopsy specimens of 8 patients with anti-ARS antibodies were examined histologically in detail. The following was determined: Two patients had usual interstitial pneumonia;3 had non-specific interstitial pneumonia;one had organizing pneumonia;one had lymphocyte interstitial pneumonia and the remaining patient had desquamative interstitial pneumonia. Age at disease onset was significantly lower and the frequency of Raynaud’s phenomenon was significantly greater in these patients compared to anti-ARS-negative patients (49.7 yrs vs. 62.6 yrs, p = 0.004;50% vs. 4%, p = 0.003, respectively). Conclusions: These results indicate that the presence of anti-ARS autoantibodies correlates with ILD without definite diagnosis of connective tissue diseases as well as polymyositis/dermatomyositis (PM/DM) with ILD in Japanese patients.展开更多
In rice (Oryza sativa L.) roots two glutamine synthetase (GS) isozymes, GSra and GSrb, were identified recently in the author's experiments, but the homology of both GSra and GSrb as well as their localization in ...In rice (Oryza sativa L.) roots two glutamine synthetase (GS) isozymes, GSra and GSrb, were identified recently in the author's experiments, but the homology of both GSra and GSrb as well as their localization in the rice roots are unclear. In the present study, the purified GSra and GSrb from rice roots were used to immunize rabbits to obtain the respective antibodies. The immunodiffusion and immunoblotting experiments showed that the antibody against GSra or GSrb was specific for GS and its isozymes. The immunoprecipitation test indicated that the antibody of GSra or GSrb not only recognized its respective antigen, but also well recognized each other's antigen. GSra or GSrb antibody recognized also better cytosolic GS1 of rice leaves, but the recognization for chloroplast GS2 from rice or spinach (Spinacia oleracea Mill.) leaves was weaker. Our results indicate that GSra and GSrb from rice roots are quite similar in antigenicity and are extremely similar proteins and that both GSra and GSrb may also be a form of cytosolic GS just as the cytosolic GS1 of rice leaves.展开更多
【目的】制备均一性和特异性高的抗组氨酰-tRNA合成酶抗体,为研究皮肌炎和多肌炎的检测提供方法,为制备检测试剂盒提供原料。【方法】采用常规融合和间接ELISA检测法,获取杂交瘤细胞株;Protein G Sepharose 4FF和Sephadex G50结合对含...【目的】制备均一性和特异性高的抗组氨酰-tRNA合成酶抗体,为研究皮肌炎和多肌炎的检测提供方法,为制备检测试剂盒提供原料。【方法】采用常规融合和间接ELISA检测法,获取杂交瘤细胞株;Protein G Sepharose 4FF和Sephadex G50结合对含有单克隆抗体的腹水进行纯化;SDS-PAGA电泳技术进行单克隆抗体的鉴定。【结果】筛选获得了2株稳定分泌阳性抗体的杂交瘤细胞株,分别命名为W001和W002;杂交瘤细胞克隆后,100%的检测孔保持了分泌抗组氨酰-tRNA合成酶抗体的能力;腹水纯化达到了较理想的效果;该2株单克隆抗体能特异性针对组氨酰-tRNA合成酶,并能跟天然的蛋白结合。【结论】所制备的均一性和特异性高的抗组氨酰-tRNA合成酶抗体,可直接用于在ELISA、免疫印迹、免疫组化学等研究方面,达到了试验的目的。展开更多
文摘Objectives: In the present study, we have sought to establish the clinical and immunological characteristics of Japanese patients with interstitial lung disease (ILD). Methods: Serum samples from 35 patients of ILD were screened for autoantibodies using RNA and protein immunoprecipitation assays. Patients with or without serum antibodies to aminoacyl tRNA synthetases (ARS) were assessed clinically and compared. Results: Sera from 12 of 35 (34%) patients with ILD (mean age at onset = 49.7 yrs;range 27 - 65 yrs) were found to contain anti-ARS antibodies (anti-EJ: 3 patients;anti-OJ: 2 patients;anti-PL-12: 3 patients;anti-KS: 4 patients). Nine of the 12 (75%) were female. Six (50%) had Raynaud’s phenomenon, 5 (42%) had arthralgia/arthritis and four (33%) had rheumatoid factor. Lung biopsy specimens of 8 patients with anti-ARS antibodies were examined histologically in detail. The following was determined: Two patients had usual interstitial pneumonia;3 had non-specific interstitial pneumonia;one had organizing pneumonia;one had lymphocyte interstitial pneumonia and the remaining patient had desquamative interstitial pneumonia. Age at disease onset was significantly lower and the frequency of Raynaud’s phenomenon was significantly greater in these patients compared to anti-ARS-negative patients (49.7 yrs vs. 62.6 yrs, p = 0.004;50% vs. 4%, p = 0.003, respectively). Conclusions: These results indicate that the presence of anti-ARS autoantibodies correlates with ILD without definite diagnosis of connective tissue diseases as well as polymyositis/dermatomyositis (PM/DM) with ILD in Japanese patients.
文摘In rice (Oryza sativa L.) roots two glutamine synthetase (GS) isozymes, GSra and GSrb, were identified recently in the author's experiments, but the homology of both GSra and GSrb as well as their localization in the rice roots are unclear. In the present study, the purified GSra and GSrb from rice roots were used to immunize rabbits to obtain the respective antibodies. The immunodiffusion and immunoblotting experiments showed that the antibody against GSra or GSrb was specific for GS and its isozymes. The immunoprecipitation test indicated that the antibody of GSra or GSrb not only recognized its respective antigen, but also well recognized each other's antigen. GSra or GSrb antibody recognized also better cytosolic GS1 of rice leaves, but the recognization for chloroplast GS2 from rice or spinach (Spinacia oleracea Mill.) leaves was weaker. Our results indicate that GSra and GSrb from rice roots are quite similar in antigenicity and are extremely similar proteins and that both GSra and GSrb may also be a form of cytosolic GS just as the cytosolic GS1 of rice leaves.
文摘【目的】制备均一性和特异性高的抗组氨酰-tRNA合成酶抗体,为研究皮肌炎和多肌炎的检测提供方法,为制备检测试剂盒提供原料。【方法】采用常规融合和间接ELISA检测法,获取杂交瘤细胞株;Protein G Sepharose 4FF和Sephadex G50结合对含有单克隆抗体的腹水进行纯化;SDS-PAGA电泳技术进行单克隆抗体的鉴定。【结果】筛选获得了2株稳定分泌阳性抗体的杂交瘤细胞株,分别命名为W001和W002;杂交瘤细胞克隆后,100%的检测孔保持了分泌抗组氨酰-tRNA合成酶抗体的能力;腹水纯化达到了较理想的效果;该2株单克隆抗体能特异性针对组氨酰-tRNA合成酶,并能跟天然的蛋白结合。【结论】所制备的均一性和特异性高的抗组氨酰-tRNA合成酶抗体,可直接用于在ELISA、免疫印迹、免疫组化学等研究方面,达到了试验的目的。
