天麻素对焦虑样胃高敏感性功能性消化不良模型大鼠脑胃调节因子含量的影响
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卫生部部属医院临床学科重点项目(卫规财函[2007]353号)


Effects of gastrodin on brainstomach modulators in the rat model of functional dyspepsia with anxietylike gastric hypersensitivity
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    【摘要】目的 探讨天麻素对焦虑样胃高敏感性功能性消化不良(FD)模型大鼠脑胃调节因子的影响。方法 将40只1日龄SPF级雄性SD仔鼠随机分为对照组、模型组、丁螺环酮组、天麻素(Gas)小剂量组和大剂量组,每组8只。出生第2日起采用序贯应激法,即序贯给予胃刺激和母婴分离,成年后给予束缚应激而制作焦虑样胃高敏感FD大鼠模型。于第8周束缚应激试验结束后开始腹腔注射给予对照组和模型组生理盐水20 mL/kg,丁螺环酮组给予丁螺环酮3125 mg/kg,Gas小、大剂量组分别给予Gas 625 mg/kg和1250 mg/kg,每天1次,连续7天。末次给药后采静脉血,并立即断头处死取脑和胃,用于测定海马、血浆和胃组织中5羟色胺(5HT)、γ氨基丁酸(GABA)、脑源性神经营养因子(BDNF)和nesfatin1的含量。结果 与对照组相比,模型组大鼠各部位5HT、 BDNF含量和海马内GABA含量均明显减少,而nesfatin1含量明显增加(P<001)。Gas大、小剂量组和丁螺环酮组各部位5HT、 BDNF含量和海马内GABA含量均明显增加,而nesfatin1含量明显减少,组间比较差异具有统计学意义(P<001)。结论 Gas能明显增加序贯应激所致焦虑样胃高敏感FD模型大鼠海马、血浆和胃组织中的5HT、BDNF、GABA的含量,减少nesfatin1的含量

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    【Abstract】Objective To investigate the effects of gastrodin on the levels of neurobiochemical modulators shared by brain and stomach in a rat model of FD with anxietylike gastric hypersensitivity induced by sequential stress.MethodsRats were sequentially subjected to acute gastric irritation (AGI) and maternal separation (MS) early in life and restraint stress (RS) in adulthood. Then they were given intraperitoneal injection of 0.9% saline (2.0 mL/kg, for control and model group), buspirone (3.125 mg/kg, for buspirone group) or Gastrodin (Gas, 62.5 or 125.0 mg/kg for Gas low or high dose groups), respectively (one time a day at 8:00 o’clock a.m. for 7 consecutive days). After that blood collection were performed and the rats were finally sacrificed by decapitation. The hippocampus and gastric fundus were promptly isolated and stored at 80 ℃ for ELISA measurements of 5hydroxytryptamine (5HT), γaminobutyric acid (GABA), brainderived neurotrophic factor (BDNF) and nesfatin1.Results Compared with the control group, the hippocampal, plasmic and gastric levels of 5HT, BDNF and GABA decreased significantly (P<001), while the concentrations of nesfatin1 increased greatly (P<001). Gas could significantly attenuate the diminution of the hippocampal, plasmic and gastric levels of 5HT, BDNF and GABA, but inhibit the increase of nesfatin1 in the same sites (P<001 vs. model rats). Conclusions The results implied that Gas could influence the levels of 5HT, GABA, BDNF and nesfatin1 in hippocampus, plasma and gastric tissue of the sequentialstresstreated rats, and could be used in the treatment of FD with anxietylike gastric hypersensitivity.

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  • 在线发布日期: 2021-03-10
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