人血浆抗谷胶蛋白IgA和IgG抗体与精神分裂症发病及临床表型的关联性分析

Analysis on association between anti-gliadin IgA and anti-gliadin IgG antibodies and schizophrenia in Chinese Han population

目的:检测中国北方汉族人群精神分裂症患者血浆中抗谷胶蛋白IgA(anti-gliadin IgA)和抗谷胶蛋白IgG(anti-gliadin IgG)抗体水平,探讨人血浆抗谷胶蛋白IgA和IgG抗体水平与中国北方汉族人群精神分裂症发病及临床表型的关系,阐明谷胶蛋白在精神分裂症发病中的作用。方法:收集428例中国北方汉族人群精神分裂症患者与555例健康对照者全血样品,分离血浆,采用ELISA法检测血浆中抗谷胶蛋白IgA和抗谷胶蛋白IgG抗体水平。应用χ2检验比较精神分裂症组和健康对照组受试者血浆抗谷胶蛋白IgA和IgG抗体阳性率,采用Mann-Whitney U检验比较精神分裂症组和健康对照组受试者血浆抗谷胶蛋白IgA和抗谷胶蛋白IgG抗体水平。结果:与健康对照组比较,精神分裂症组患者血浆抗谷胶蛋白IgA阳性率及IgA水平均明显升高(P<0.01),抗谷胶蛋白IgG阳性率及IgG水平差异无统计学意义(P>0.05)。携带关系妄想、读心症、被迫害妄想、嫉妒妄想、夸大妄想、思维连贯性障碍、思维逻辑性障碍、古怪行为、攻击性行为、幻觉-妄想综合征、思维贫乏、情感迟钝/淡漠和意志缺乏等临床表型的精神分裂症患者血浆中抗谷胶蛋白IgA水平均显著高于健康对照者(P<0.05);携带读心症和夸大妄想等临床表型的精神分裂症患者血浆抗谷胶蛋白IgG水平显著高于健康对照者(P<0.05)。结论:谷胶蛋白与中国北方汉族人群精神分裂症发病密切相关,血浆中的谷胶蛋白自身抗体在精神分裂症发病中可能发挥重要作用。

Objective To detect the levels of anti-gliadin IgA and anti-gliadin IgG antibodies in the plasma of the patients with schizophrenia, and to investigate the association between schizophrenia and anti-gliadin IgA, IgG bodies in a Chinese Han population, and to clarify the effect of gliadin on the occurrence of schizophrenia.Methods The plasma samples were collected from 428 patients with schizophrenia and 555 cases of normal control subjects in a Chinese Han population.The gliadin antibodies in plasma,including IgA and IgG,were tested using a native anti-gliadin ELISA test kit.The positive rates of plasma anti-gliadin IgA,and anti-gliadin IgG were tested by Chi-square test between the patients with schizophrenia and control subj ects. The differences of the levels of anti-gliadin IgA and anti-gliadin IgG were tested by Mann-Whitney U test between the patients with schizophrenia and control subjects.Results Compared with normal control group,the anti-gliadin IgA level and the positive rate of plasma anti-gliadin IgA in patient group were increased significantly（P〈0.01）,but there were no significant differences of the positive rate and the level of anti-gliadin IgG in plasma between patient and control groups （P〉0.05）.The anti-gliadin IgA levels in the patients with delusion of observation,delusion of being revealed,delusion of persecution, delusion of j ealousy, delusion of grandeur, incoherence of thinking, illogic thought, bizarre behavior,aggressive behavior,hallucination-delusion syndrome,poverty of thought,emotional blunting/apathy and aboulia were higher than that of the normal controls （P〈0.05）;the anti-gliadin IgG levels in the patients with delusion of being revealed and delusion of grandeur were higher than that of the normal controls （P〈0.05 ）. Conclusion Gliadin is associated with the onset of schizophrenia in Chinese Han population, and the plasma antibodies of gliadin maybe play an important rale in the onset of schizophrenia.