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1.湖北中医药大学针灸骨伤学院,武汉 430061
2.湖北中医药大学中医临床学院
吴帆,湖北中医药大学博士研究生。E-mail:412872859@qq.com
王华,教授。E-mail:hwang.tcm@china.com
收稿:2022-11-29,
网络首发:2023-08-01,
纸质出版:2023-10-12
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吴帆,李佳,王静芝等.“标本配穴”艾灸对腹泻型肠易激综合征伴焦虑模型大鼠心率变异性、心房利钠肽的影响[J].中国针灸,2023,43(10):1139-1147.
WU Fan,LI Jia,WANG Jing-zhi,et al.Effects of moxibustion of "biaobenacupoint combination" on heart rate variability, atrial natriuretic peptide in the model rats of IBS-D complicated with anxiety[J].Chinese Acupuncture & Moxibustion,2023,43(10):1139-1147.
吴帆,李佳,王静芝等.“标本配穴”艾灸对腹泻型肠易激综合征伴焦虑模型大鼠心率变异性、心房利钠肽的影响[J].中国针灸,2023,43(10):1139-1147. DOI: 10.13703/j.0255-2930.20221129-k0004.
WU Fan,LI Jia,WANG Jing-zhi,et al.Effects of moxibustion of "biaobenacupoint combination" on heart rate variability, atrial natriuretic peptide in the model rats of IBS-D complicated with anxiety[J].Chinese Acupuncture & Moxibustion,2023,43(10):1139-1147. DOI: 10.13703/j.0255-2930.20221129-k0004.
目的
2
比较“标本配穴”和“常规取穴”艾灸对腹泻型肠易激综合征(IBS-D)伴焦虑模型大鼠心率变异性(HRV)和心肌心房利钠肽(ANP)表达的影响。
方法
2
从50只健康SPF级3月龄雌性SD大鼠中随机选取8只作为空白组,剩余大鼠制备IBS-D伴焦虑模型,将造模成功的24只大鼠随机分为模型组、常规组和标本组,每组8只。常规组予“天枢”“足三里”“上巨虚”艾灸干预,标本组予“内关”“足三里”“关元”艾灸干预,每次20 min,每天1次,共干预14 d。分别于干预前后比较各组大鼠体质量、粪便含水率;应用腹壁撤退反射(AWR)实验评价内脏高敏感性,高架十字迷宫和明暗穿箱实验评价焦虑状态。干预后,比较各组大鼠HRV,采用透射电镜观察各组大鼠肠黏膜超微结构,Western blot法及免疫荧光法检测大鼠心肌组织ANP表达。
结果
2
干预前,与空白组比较,模型组、常规组、标本组大鼠体质量、内脏疼痛阈值降低(
P
<
0.05),粪便含水率、AWR评分(扩张压力为40、60、80 mm Hg时,1 mm Hg≈0.133 kPa)升高(
P
<
0.05),开放臂停留时间、进入开放臂次数、总运动路程(高架十字迷宫)及明箱停留时间、明暗箱穿梭次数、总运动路程(明暗穿箱)均减少(
P
<
0.05)。干预后,与空白组比较,模型组大鼠体质量、内脏疼痛阈值、RR间期标准差(SDNN)、连续RR间隔均方差的平方根(RMSSD)降低(
P
<
0.05),粪便含水率、AWR评分(扩张压力为40、60、80 mm Hg时)、低频/高频(LF/HF)、ANP表达升高(
P
<
0.05),开放臂停留时间、进入开放臂次数、总运动路程(高架十字迷宫)及明箱停留时间、明暗箱穿梭次数、总运动路程(明暗穿箱)减少(
P
<
0.05);与模型组比较,常规组和标本组大鼠体质量、内脏疼痛阈值、SDNN、RMSSD升高(
P
<
0.05),粪便含水率、AWR评分(扩张压力为60、80 mm Hg时)、LF/HF、ANP表达降低(
P
<
0.05),开放臂停留时间、进入开放臂次数、总运动路程(高架十字迷宫)及明箱停留时间、明暗箱穿梭次数、总运动路程(明暗穿箱)增多(
P
<
0.05);与常规组比较,标本组大鼠体质量、内脏疼痛阈值、SDNN、RMSSD升高(
P
<
0.05),粪便含水率、AWR评分(扩张压力为80 mm Hg时)、LF/HF、ANP表达降低(
P
<
0.05),开放臂停留时间、进入开放臂次数、总运动路程(高架十字迷宫)及明箱停留时间、明暗箱穿梭次数、总运动路程(明暗穿箱)增多(
P
<
0.05)。空白组大鼠肠黏膜上皮细胞形态正常;模型组大鼠肠黏膜上皮紧密连接形态破坏,缝隙连接增宽;常规组大鼠肠黏膜上皮紧密连接不完整;标本组大鼠肠黏膜上皮紧密连接较完整。
结论
2
“标本配穴”艾灸较“常规取穴”艾灸能更好地改善IBS-D伴焦虑大鼠症状,其机制可能与缓解焦虑样负性情绪、良性调节HRV、稳固IBS-D肠黏膜屏障、下调心肌ANP表达有关。
Objective
2
To compare the effects on the heart rate variability (HRV) and the expression of the atrial natriuretic peptide (ANP) in the model rats of irritable bowel syndrome with predominant diarrhea (IBS-D) rats complicated with anxiety between moxibustion of "biaoben acupoint combination" and that of "conventional acupoint combination".
Methods
2
Of 50 healthy SPF female SD rats
aged 3 months
8 rats were selected randomly as a blank group
and the rest rats were prepared to be the model of IBS-D complicated with anxiety. Twenty-four rats after successfully modeled were randomized into a model group
a conventional acupoint combination group (convention group) and a biaoben acupoint combination group (biaoben group)
8 rats in each one. In the convention group
moxibustion was delivered at "Tianshu" (ST 25)
"Zusanli"(ST 36) and "Shangjuxu"(ST 37); and in the biaoben group
moxibustion was applied to "Neiguan" (PC 6)
"Zusanli" (ST 36)
and "Guanyuan" (CV 4). One session of moxibustion took 20 min
once daily
for 14 days in total. Before and after intervention
the body mass and fecal moisture content were compared in the rats of each group; using abdominal wall withdrawal reflex
the visceral hypersensitivity was evaluated; with elevated plus maze (EPM) and light-dark box (LDB)
the anxiety conditions were assessed. After intervention
HRV was compared among groups
the ultrastructure of intestinal mucosa was observed under the transmission electron microscope in the rats of each group
and ANP expression in the myocardial tissue was detected using Western blot method and immunofluorescence.
Results
2
Before the intervention
compared with the blank group
the body mass and visceral pain threshold of rats were reduced in the model group
the convention group and the biaoben group (
P<
0.05)
fecal moisture content and AWR scores (at the dilatatio
n pressure of 40
60 and 80 mm Hg
1 mm Hg ≈ 0.133 kPa) were elevated (
P<
0.05); and time in the open arm
the open arm entry number and the total movement distance (EPM)
the time spent in the light compartment
the number of dark to light transitions and the total transition distance (LDB) were decreased (
P<
0.05). After the intervention
compared with the blank group
in the model group
the body mass
visceral pain threshold
standard diviation of NN intervals (SDNN) and root mean square of successive RR interval differences (RMSSD) were dropped (
P<
0.05)
fecal moisture content
AWR scores (the dilation pressures of 40
60 and 80 mm Hg)
LF/HF and ANP expression were increased (
P<
0.05)
the time in open arm
the open arm entry number and the total movement distance (EPM)
the time spent in the light compartment
the number of dark to light transitions and the total transition distance (LDB) were decreased (
P<
0.05). When compared with the model group
in the convention group and the biaoben group
the body mass
visceral pain threshold
SDNN and RMSSD were increased (
P<
0.05)
fecal moisture content
AWR scores (the dilation pressures of 60 and 80 mm Hg)
LF/HF and ANP expression were dropped (
P<
0.05)
the time in open arm
the open arm entry number and the total movement distance (EPM)
the time spent in the light compartment
the number of dark to light transitions and the total transition distance (LDB) were increased (
P
<
0.05). In the biaoben group
compared with the convention group
the body mass
visceral pain threshold
SDNN and RMSSD were elevated (
P<
0.05)
fecal moisture content
AWR score (the dilation pressure of 80 mm Hg)
LF/HF and ANP expression were decreased (
P<
0.05)
the time in open arm
the open arm entry number and the total movement distance (EPM)
the time spent in the light compartment
the num
ber of dark to light transitions and the total transition distance (LDB) were increased (
P
<
0.05). The epithelial cells of the intestinal mucosa showed a normal morphology in the blank group
the tight junction of the cells was disrupted and the junction was loose in the model group; the tight junction was imperfect in the convention group
but it was intact in the biaoben group.
Conclusion
2
Compared with the conventional acupoint combination
moxibustion of biaoben acupoint combination is more effective on the symptoms of IBS-D complicated with anxiety in the model rats. The effect mechanism may be related to attenuating anxiety-like negative emotions
positively regulating HRV
stabilizing IBS-D intestinal mucosal barrier and down-regulating the expression of ANP in myocardium.
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