Aims: This paper investigates the presence of M3 muscarinic acetylcholine receptor autoantibody present in the serum of patients with primary Sj?gren syndrome (pSS). Main methods: We detected the levels of M3mAChR pep...Aims: This paper investigates the presence of M3 muscarinic acetylcholine receptor autoantibody present in the serum of patients with primary Sj?gren syndrome (pSS). Main methods: We detected the levels of M3mAChR peptide IgG, PGE2, IL-1β in serum of SS patients using the enzyme-linked immune sorbent assay (ELISA). To measure the quantity of nitrite/nitrate, we used Griess reagent system. Key findings: Titres of M3mAChR antibody in sera from SS patients are significantly enhanced compared to healthy subjects (control). The enhancement of these autoantibodies is accompanied by the increase of the levels of PGE2, IL-1β and nitrite/nitrate in serum. Under in vitro conditions, the synthetic human M3 peptide impaires the increment of M3mAChR antibody but not that of nati-Ro/SSA antibody. In positive anti-Ro/SSA antibody patients, the increment of M3mAChR peptide IgG and the measured pro-inflammatory substances is related. Significance: On this basis, anti M3mAChR peptide IgG can be said to act as a modulator of the immune system and to play a role in the host-chronic increment of proinflammatory substances in SS patients with positive Ro/SSA antibody. This association between the antibody and the pathogenesis of SS disease may result in useful predicting SS.展开更多
目的探讨基质金属蛋白酶-9(MMP-9)、抗内皮细胞抗体(AECA)和抗中性粒细胞胞质抗体(ANCA)在川崎病(KD)冠状动脉损害中的作用及临床意义。方法选取KD患儿42例,分为冠脉损害(CAL)组16例,无冠脉损害(NCAL)组26例,以20例普通发热患儿、15例...目的探讨基质金属蛋白酶-9(MMP-9)、抗内皮细胞抗体(AECA)和抗中性粒细胞胞质抗体(ANCA)在川崎病(KD)冠状动脉损害中的作用及临床意义。方法选取KD患儿42例,分为冠脉损害(CAL)组16例,无冠脉损害(NCAL)组26例,以20例普通发热患儿、15例择期手术患儿作为对照组。ELISA检测各组血清MMP-9、AECA和ANCA蛋白水平;荧光定量PCR、明胶酶谱法分别测定单个核细胞MMP-9 m RNA表达及血清MMP-9酶活性。结果 KD急性期外周血MMP-9 m RNA表达、蛋白水平及酶活性均高于两对照组(P均<0.01),CAL组较NCAL组升高更显著(P均<0.05)。KD缓解期MMP-9 m RNA表达、蛋白水平及酶活性较急性期降低(P均<0.01)。KD急性期AECA、ANCA蛋白水平均高于两对照组(P均<0.01)。CAL组ANCA蛋白水平高于NCAL组(P<0.01)。KD急性期血清AECA水平与MMP-9呈正相关(r=0.77,P<0.01)。急性期CAL组MMP-9、ANCA与冠状动脉内径/主动脉瓣环内径比值呈正相关关系(r=0.57,P<0.05;r=0.88,P<0.01)。结果 MMP-9、AECA、ANCA蛋白参与KD血管炎及冠脉损害过程,检测其血清水平对早期预测冠脉损害有一定价值。展开更多
文摘Aims: This paper investigates the presence of M3 muscarinic acetylcholine receptor autoantibody present in the serum of patients with primary Sj?gren syndrome (pSS). Main methods: We detected the levels of M3mAChR peptide IgG, PGE2, IL-1β in serum of SS patients using the enzyme-linked immune sorbent assay (ELISA). To measure the quantity of nitrite/nitrate, we used Griess reagent system. Key findings: Titres of M3mAChR antibody in sera from SS patients are significantly enhanced compared to healthy subjects (control). The enhancement of these autoantibodies is accompanied by the increase of the levels of PGE2, IL-1β and nitrite/nitrate in serum. Under in vitro conditions, the synthetic human M3 peptide impaires the increment of M3mAChR antibody but not that of nati-Ro/SSA antibody. In positive anti-Ro/SSA antibody patients, the increment of M3mAChR peptide IgG and the measured pro-inflammatory substances is related. Significance: On this basis, anti M3mAChR peptide IgG can be said to act as a modulator of the immune system and to play a role in the host-chronic increment of proinflammatory substances in SS patients with positive Ro/SSA antibody. This association between the antibody and the pathogenesis of SS disease may result in useful predicting SS.
文摘目的探讨基质金属蛋白酶-9(MMP-9)、抗内皮细胞抗体(AECA)和抗中性粒细胞胞质抗体(ANCA)在川崎病(KD)冠状动脉损害中的作用及临床意义。方法选取KD患儿42例,分为冠脉损害(CAL)组16例,无冠脉损害(NCAL)组26例,以20例普通发热患儿、15例择期手术患儿作为对照组。ELISA检测各组血清MMP-9、AECA和ANCA蛋白水平;荧光定量PCR、明胶酶谱法分别测定单个核细胞MMP-9 m RNA表达及血清MMP-9酶活性。结果 KD急性期外周血MMP-9 m RNA表达、蛋白水平及酶活性均高于两对照组(P均<0.01),CAL组较NCAL组升高更显著(P均<0.05)。KD缓解期MMP-9 m RNA表达、蛋白水平及酶活性较急性期降低(P均<0.01)。KD急性期AECA、ANCA蛋白水平均高于两对照组(P均<0.01)。CAL组ANCA蛋白水平高于NCAL组(P<0.01)。KD急性期血清AECA水平与MMP-9呈正相关(r=0.77,P<0.01)。急性期CAL组MMP-9、ANCA与冠状动脉内径/主动脉瓣环内径比值呈正相关关系(r=0.57,P<0.05;r=0.88,P<0.01)。结果 MMP-9、AECA、ANCA蛋白参与KD血管炎及冠脉损害过程,检测其血清水平对早期预测冠脉损害有一定价值。
基金supported by grants from The National Natural Science Foundation of China(Y4JM061001,Y5JY011001,81072093)The Natural Science Foundation of Hebei Province(C2012401039)~~
