中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (5): 663-668.doi: 10.12307/2022.108

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

电针足三里对功能性消化不良模型大鼠内脏高敏感性的影响

范建超1,徐派的1,韩永丽1,文彩玉珠2,张红星1,潘小丽1   

  1. 1湖北中医药大学针灸骨伤学院,湖北省武汉市   430061;2郑州大学第三附属医院生殖医学科,河南省郑州市   450052
  • 收稿日期:2021-03-10 修回日期:2021-03-11 接受日期:2021-04-28 出版日期:2022-02-18 发布日期:2021-11-02
  • 通讯作者: 潘小丽,博士,助教,湖北中医药大学针灸骨伤学院,湖北省武汉市 430061
  • 作者简介:范建超,男,1992年生,湖北省武穴市人,汉族,湖北中医药大学针灸骨伤学院在读博士,主要从事针灸防治功能性胃肠疾病的临床及机制研究。
  • 基金资助:
    国家自然科学基金青年项目(81704178),项目负责人:徐派的;湖北中医药大学“青苗计划”资助项目(2021zzx009),项目负责人:潘小丽

Effects of electroacupuncture at Zusanli acupoint on visceral hypersensitivity in rats with functional dyspepsia

Fan Jianchao1, Xu Paidi1, Han Yongli1, Wen Caiyuzhu2, Zhang Hongxing1, Pan Xiaoli1   

  1. 1Department of Acupuncture and Bone Traumatology, Hubei University of Chinese Medicine, Wuhan 430061, Hubei Province, China; 2Department of Reproductive Medicine, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • Received:2021-03-10 Revised:2021-03-11 Accepted:2021-04-28 Online:2022-02-18 Published:2021-11-02
  • Contact: Pan Xiaoli, PhD, Assistant teacher, Department of Acupuncture and Bone Traumatology, Hubei University of Chinese Medicine, Wuhan 430061, Hubei Province, China
  • About author:Fan Jianchao, PhD candidate, Department of Acupuncture and Bone Traumatology, Hubei University of Chinese Medicine, Wuhan 430061, Hubei Province, China
  • Supported by:
    the National Natural Science Foundation of China (Youth Program), No. 81704178 (to XPD); Qingmiao Program of Hubei University of Chinese Medicine, No. 2021zzx009 (to PXL)

摘要:

文题释义:
功能性消化不良:是临床最常见的功能性胃肠疾病之一,是起源于胃和十二指肠的非器质性消化系统疾病,以早饱、进食后饱胀不适或上腹部疼痛、灼烧感为主要症状,伴随恶心、嗳气等症状,也可出现焦虑、抑郁等精神状态的改变。
内脏高敏感性:是指内脏感觉异常或感觉过敏,可表现为对生理性刺激不适或对伤害性刺激反应强烈,表现为胃肠道对机械或者化学刺激反应增强或过敏,进而出现上腹痛或灼烧感等消化系统症状,是功能性消化不良的主要病理机制之一。

背景:功能性消化不良发病机制复杂,内脏高敏感性是其最主要的病理机制之一,但从内脏高敏感性机制层面论证电针治疗功能性消化不良的研究报道较少。
目的:探讨电针足三里调节功能性消化不良大鼠内脏高敏感性的效应及其可能机制。
方法:将24只雄性7 d龄SD乳鼠随机分为空白组、模型组、电针组,每组8只,后2组采用多因素应激干预法(碘乙酰胺灌胃+不规则喂养+改良郭氏夹尾刺激法)复制功能性消化不良内脏高敏感性大鼠模型,大鼠8周龄即进行电针干预。电针组给予针刺大鼠双侧后肢足三里穴 7-10 mm,连接韩式穴位神经刺激仪,参数设置为疏密波,频率2/100 Hz,强度1 mA,每次电针干预20 min,1次/d,每周连续5 d后休息 2 d,共2周。计算各组大鼠不同阶段平均体质量,采用足底机械痛阈值反映各组大鼠内脏敏感性,ELISA法检测各组大鼠血清和胃底黏膜组织5-羟色胺表达水平,实时荧光定量PCR法检测各组大鼠胃底黏膜组织环核苷酸直接激活的交换蛋白1、机械敏感性离子通道蛋白PIEZO2 mRNA表达水平。
结果与结论:①与空白组相比,模型组大鼠平均体质量、足底机械痛阈值均显著降低,血清和胃底黏膜组织5-羟色胺水平升高,差异有非常显著性意义(P均< 0.01);胃底黏膜组织环核苷酸直接激活的交换蛋白1、PIEZO2 mRNA表达水平升高(P均< 0.01);②与模型组相比,电针组大鼠干预7,14 d后的平均体质量、足底机械痛阈值均升高,差异有显著性意义(P < 0.05,< 0.01),血清和胃底黏膜组织5-羟色胺水平及胃底黏膜组织环核苷酸直接激活的交换蛋白1、PIEZO2 mRNA水平均降低(P均< 0.01);③提示电针足三里可以显著改善功能性消化不良大鼠内脏高敏感性,其作用机制可能与调节肠嗜铬细胞5-羟色胺释放及环核苷酸直接激活的交换蛋白1、PIEZO2表达有关。
缩略语:环核苷酸直接激活的交换蛋白1:exchange protein 1 directly activated by cAMP,EPAC1

https://orcid.org/0000-0001-6406-1302 (范建超)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 功能性消化不良, 电针, 内脏高敏感性, 环核苷酸直接激活的交换蛋白1, PIEZO2, 大鼠

Abstract: BACKGROUND: The pathogenesis of functional dyspepsia is complex, and visceral hypersensitivity is one of the most important pathological mechanisms. However, there are few reports on electroacupuncture treatment of functional dyspepsia from the perspective of visceral hypersensitivity mechanism.
OBJECTIVE: To observe the effects and its possible mechanism of electroacupuncture at Zusanli (ST36) on visceral hypersensitivity in rats with functional dyspepsia. 
METHODS: Twenty-four 7-day-old male Sprague-Dawley rats were randomly divided into three groups: a control group, a model group, and an electroacupuncture group (n=8). The visceral hypersensitivity model of functional dyspepsia rats was prepared with multi-factor stress methods (intragastric administration of iodoacetamide+irregular feeding+Guo’s moderate clipping tail). In the electroacupuncture group, rats aged 8 weeks were treated with electroacupuncture intervention. A disposable sterile acupuncture needle was pierced into 7-10 mm at Zusanli acupoints of bilateral hind limbs of rats, which was connected with Hans-acupoint nerve stimulator (dilatational wave, 2/100 Hz, 1 mA). Electroacupuncture was performed 20 minutes per day, 5 consecutive days as one session with 2 days off, for 2 sessions in total. The average body mass of rats in different stages was computed. Mechanical pain threshold of the plantar was tested to detect visceral sensitivity of rats. Enzyme-linked immune sorbent assay (ELISA) was applied to detect the level of 5-hydroxytryptamine in serum and gastric fundus mucosa tissue. Real-time fluorescence quantitative PCR was used to assess the expression of exchange protein 1 directly activated by cAMP (EPAC1) and PIEZO2 mRNA in gastric fundus mucosa tissue. 
RESULTS AND CONCLUSION: Compared with the control group, the average body mass and plantar mechanical pain threshold were significantly decreased in the model group, and the level of 5-hydroxytryptamine in serum and gastric fundus mucosa was significantly increased (all P < 0.01). The mRNA expression levels of EPAC1 and PIEZO2 in gastric fundus mucosa were significantly increased in the model group compared with the control group (P < 0.01). Compared with the model group, in the electroacupuncture group, the average body mass and plantar mechanical pain threshold were significantly increased after 7 and 14 days of treatment (P < 0.05, P < 0.01), while the mRNA expression levels of EPAC1 and PIEZO2 in gastric fundus mucosa were significantly decreased (P < 0.01). These findings indicate that electroacupuncture at Zusanli can significantly improve the visceral hypersensitivity of functional dyspepsia rats, which is possibly mediated by regulating the release of 5-hydroxytryptamine from enterochromaffin cells and the mRNA expression of EPAC1 and PIEZO2.

Key words: functional dyspepsia, electroacupuncture, visceral hypersensitivity, exchange protein 1 directly activated by cAMP, PIEZO2, rat 

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