黎可京+邱小蕾+袁耀宗
[摘要] 目的 研究5-羟色胺转运体(SERT)与肠易激综合征(IBS)患者躯体和心理症状是否存在相关性。 方法 选取2010年1月~2012年12月佛山市第一人民医院IBS患者154例为病例组,并按不同症状分为3个亚组(C-IBS组65例、D-IBS组47例、A-IBS组42例),选择同期健康志愿者154名作为对照组。应用心理症状自评量表(SCL-90)来评价研究对象的心理状态;采用实时定量PCR法测定SERT信使RNA(mRNA)表达量,Western印迹法测定SERT蛋白表达水平。 结果 SERT蛋白表达量:病例组(0.81±0.45)和对照组(0.79±0.47)比较,差异无统计学意义(P > 0.05)。SERT mRNA转录表达量:病例组(0.46±0.25)和对照组(0.42±0.28)比较,差异无统计学意义(P > 0.05)。C-IBS组SERT蛋白表达量(0.98±0.51)及mRNA表达量(0.58±0.23)均显著高于D-IBS组[(0.71±0.40)、(0.41±0.25)]、A-IBS组[(0.67±0.35)、(0.37±0.23)]和对照组[(0.79±0.47)、(0.42±0.28)],差异均有统计学意义(P < 0.05)。SERT蛋白表达量与躯体化症状(r = -0.681,P < 0.05)、敌意因子(r = -0.663,P < 0.05)、焦虑因子(r = -0.711,P < 0.05)和抑郁因子(r = -0.812,P < 0.05)呈负相关,与强迫症状、恐惧、偏执、人际关系敏感和精神病因子均无明显相关性(P > 0.05)。 结论 IBS患者SERT的mRNA及蛋白量表达水平与患者的躯体和心理症状密切相关,越低则越容易出现躯体化症状、焦虑等情绪表现。
[关键词] 5-羟色胺转运体;肠易激综合征;转运蛋白质;躯体化症状;心理症状
[中图分类号] R574.4 [文献标识码] A [文章编号] 1673-7210(2014)02(c)-0018-04
Correlation between expression of SERT and somatic and psychological symptoms of irritable bowel syndrome
LI Kejing1 QIU Xiaolei1 YUAN Yaozong2
1.Department of Special Medical Center, the First People's Hospital of Foshan City, Guangdong Province, Foshan 528000, China; 2.Department of Special Medical Center, the Affiliated Ruijin Hospital of Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
[Abstract] Objective To explore the correlation between the expression of SERT and somatic and psychological symptoms of irritable bowel syndrome (IBS). Methods 154 cases of IBS patients in the First People's Hospital of Foshan City from January 2010 to December 2012 were selected as disease group and divided into three groups (C-IBS group 65 cases, D-IBS group 47 cases, A-IBS group 42 cases) according to different symptom. 154 healthy volunteers were selected as control group. The psychological symptom of study objects were evaluated by SLC-90. The expression of SERT at mRNA level was tested by real-time potymerase chain reaction (PCR) and the expression of SERT at protein level was detected with Western blotting. Results The expressions of SERT at protein: disease group (0.81±0.45) and control group (0.79±0.47) were compared, the difference was not statistically significant (P > 0.05). The expressions of mRNA: disease group (0.46±0.25) and the control group (0.42±0.28) were compared, the difference was not statistically significant (P > 0.05). The expressions of SERT at protein (0.98±0.51) and mRNA (0.58±0.23) in C-IBS group were significantly higher than those in D-IBS group [(0.71±0.40), (0.41±0.25)], A-IBS group [(0.67±0.35), (0.37±0.23)] and control group [(0.79±0.47), (0.42±0.28)], the differences were statistically significant (P < 0.05). There were negative correlations between the expression of SERT at protein level and somatic symptoms (r = -0.681, P < 0.05), hostility factor (r = -0.663, P < 0.05), anxiety factor (r = -0.711, P < 0.05) and depression factor (r = -0.812, P < 0.05), however there was no correlation between the expression of SERT at protein level and obsessive-compulsive symptoms, terror, paranoia, interpersonal sensitivity and psychosis factors (P > 0.05). Conclusion There is significant correlation between the expressions of SERT at mRNA and protein level and the somatic and psychological symptoms of IBS patients. It shows that the lower level of SERT expressions, the more emotional performance of somatization, anxiety and so on.
[Key words] SERT; Irritable bowel syndrome; Transport proteinst; Somatic symptoms; Psychological symptoms
肠易激综合征(irritable bowel syndrome,IBS)是一种常见的慢性胃肠功能紊乱性疾病,至今为止病因和发病机制尚未明确,根据症状不同分为便秘型(constipationirritable bowelsyndrome,C-IBS)、腹泻型(diarrhea irritable bowel syndrome,D-IBS)和腹泻便秘交替型(alternating diarrhea andconstipationirritable bowelsyndrome,A-IBS)[1]。
近年研究发现,5-羟色胺(5-hydroxytryptamine,5-HT)及5-羟色胺转运体(seroto-nin transporter,SERT)在肠道动力紊乱、内脏感觉异常等机制中发挥着重要作用[2],IBS患者中有40%~60%都伴焦虑、抑郁等心理障碍[3]。本研究正是为了探讨SERT异常与患者躯体和心理症状之间的关系,以期对IBS治疗和药物的开发提供理论依据。
1 资料与方法
1.1 一般资料
选取2010年1月~2012年12月佛山市第一人民医院IBS患者154例为病例组,其中男59例,女95例,平均年龄(41.9±11.9)岁,根据临床症状分为便秘主导型(C-IBS)组、腹泻主导型(D-IBS)组和腹泻便秘交替型(A-IBS)组3个亚组。其中……