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1.湖南中医药大学针灸推拿与康复学院,长沙410208
2.浏阳市中医医院针灸推拿康复疼痛科,湖南浏阳410300
3.湖南中医药大学针灸生物信息学重点实验室,长沙410208
何灏龙,博士研究生,研究方向:针灸治病机制的研究。E-mail:724448949@qq.com
刘琼,讲师,研究方向:针灸治病机制的研究。E-mail:121181998@qq.com
刘密,教授,博士生导师,研究方向:针灸治病机制的研究。E-mail:newmean9722@qq.com
收稿日期:2022-11-13,
修回日期:2022-12-19,
纸质出版日期:2023-08-25
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何灏龙,张国山,肖山峰等.艾灸“天枢”“上巨虚”对克罗恩病大鼠结肠代谢物及炎性因子的影响[J].针刺研究,2023,48(08):736-745.
HE Hao-long,ZHANG Guo-shan,XIAO Shan-feng,et al.Effects of moxibustion at “Tianshu”(ST25) and “Shangjuxu” (ST37) on colonic metabolites and inflammatory factors in rats with Crohn’s disease[J].Acupuncture Research,2023,48(08):736-745.
何灏龙,张国山,肖山峰等.艾灸“天枢”“上巨虚”对克罗恩病大鼠结肠代谢物及炎性因子的影响[J].针刺研究,2023,48(08):736-745. DOI: 10.13702/j.1000-0607.20221276.
HE Hao-long,ZHANG Guo-shan,XIAO Shan-feng,et al.Effects of moxibustion at “Tianshu”(ST25) and “Shangjuxu” (ST37) on colonic metabolites and inflammatory factors in rats with Crohn’s disease[J].Acupuncture Research,2023,48(08):736-745. DOI: 10.13702/j.1000-0607.20221276.
目的
2
观察艾灸“天枢”“上巨虚”对克罗恩病(CD)大鼠结肠代谢物及炎性因子的影响,从代谢角度探讨艾灸对CD大鼠结肠的保护机制。
方法
2
SD大鼠随机抽取12只为空白组,其余24只大鼠通过2,4,6三硝基苯磺酸灌肠诱导制备CD模型,将造模成功的大鼠随机分为模型组与艾灸组,每组10只。艾灸组予艾灸双侧“天枢”“上巨虚”,30 min/次,每天1次,连续7 d。实验期间记录大鼠体质量并评估疾病活动指数(DAI),干预结束后HE染色观察结肠病理损伤,ELISA法检测血清炎性因子水平,核磁共振氢谱技术检测并筛选差异结肠代谢物。
结果
2
造模后,与空白组比较,模型组大鼠体质量显著下降(
P
<
0.05),DAI评分升高(
P
<
0.05),结肠存在明显的炎性损伤,结肠病理损伤评分升高(
P
<
0.05),血清肿瘤坏死因子-α(TNF-α)、白细胞介素(IL)-1β、干扰素-γ(IFN-γ)含量显著升高(
P
<
0.05)。艾灸治疗后,与模型组比较,艾灸组大鼠体质量增加(
P
<
0.05),DAI评分显著降低(
P
<
0.05),结肠炎性损伤减轻,结肠病理损伤评分降低(
P
<
0.05),血清TNF-α、IL-1β和IFN-γ含量显著降低(
P
<
0.05)。与空白组比较,模型组结肠组织次黄嘌呤、甜菜碱、肌酸、肌醇、牛磺酸、尿嘧啶、甲醇相对表达量降低(
P
<
0.05),组氨酸、亮氨酸、脯氨酸、赖氨酸、异亮氨酸、苯丙氨酸、酪氨酸、丙酸、缬氨酸相对表达量升高(
P
<
0.05)。与模型组比较,艾灸组可回调次黄嘌呤、亮氨酸、赖氨酸、异亮氨酸、甜菜碱、酪氨酸、牛磺酸7个差异代谢物相对表达量(
P
<
0.05),主要涉及苯丙氨酸、酪氨酸和色氨酸生物合成、牛磺酸和亚牛磺酸代谢通路。
结论
2
艾灸“天枢”“上巨虚”治疗CD的机制可能是通过回调差异代谢物,从多条代谢通路调控结肠代谢紊乱状态,降低炎性因子水平,从而维持肠道免疫稳态。
Objective
2
To observe the effects of moxibustion at “Tianshu”(ST25) and “Shangjuxu”(ST37) on the colonic metabolites and inflammatory factors in rats with Crohn’s disease(CD), so as to explore the mechanisms of moxibustion in protecting colon of CD rats based on metabolomics.
Methods
2
Twelve rats were first randomly selected from 36 male SD rats as a normal group(NG). The CD model was induced by 2,4,6 trinitrobenzene sulfonic acid(TNBS) enema on the rest 24 rats. After successful modeling, rats were randomly divided into model(TNBS) and moxibustion(TNBS+MOX) groups(
n
=10 rats/group). Moxibustion was applied at bilateral ST25 and ST37 for 30 min, once daily for 7 consecutive days in the TNBS+MOX group, while rats in the NG and TNBS groups did not receive any interventions. Body weight of rats was recorded and disease activity index(DAI) was assessed during the experiment. After interventions, HE staining was performed to observe pathological damage of colon. Serum levels of inflammatory factors were measured by ELISA. NMR hydrogen spectroscopy was used to detect colonic metabolites of each group, and orthogonal partial least squares discriminant analysis(OPLS-DA) was used to screen differential colonic metabolites between groups, followed by pathway analysis using MetaboAnalyst 5.0 platform.
Results
2
After modeling, compared with the NG group, the body weight of the rats in the TNBS group was significantly decreased(
P
<
0.05), the DAI score was increased (
P
<
0.05), the colon had obvious inflammatory damage and the pathological injury index was increased(
P
<
0.05), and levels of serum tumor necrosis factor-
α
(TNF-
α
), interleukin(IL)-1
β
and interferon-γ(IFN-γ) were significantly increased(
P
<
0.05). After moxibustion intervention, compared with the TNBS group, the body weight was significantly increased(
P
<
0.05), while the levels of serum TNF-
α
, IL-1
β,
IFN-γ, and DAI score of the rats in the TNBS+MOX group were significantly decreased(
P
<
0.05), with alleviated colonic inflammatory injury detected by HE staining. Compared with the NG group, the relative expressions of colonic hypoxanthine, betaine, creatine, inositol, taurine, uracil, and methanol of the TNBS group were decreased(
P
<
0.05), while the relative expressions of histidine, leucine, proline, lysine, isoleucine, phenylalanine, tyrosine, propionic acid, and valine were increased(
P
<
0.05) in the TNBS group, among which, relative expressions of hypoxanthine, leucine, lysine, isoleucine, betaine, tyrosine, and taurine were reversed in the TNBS+MOX group relevant to the TNBS group, mainly involving phenylalanine, tyrosine and tryptophan biosynthesis, and taurine and subtaurine metabolism pathway.
Conclusion
2
The mechanism of moxibustion at ST25 and ST37 for CD may be related to improving colon metabolic disorder state by regulating multiple metabolic metabolites and metabolic pathways, and reducing the level of inflammatory factors, so as to maintain intestinal immune homeostasis.
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