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中国中医科学院针灸研究所,北京100700
Received:20 October 2025,
Revised:2025-12-02,
Online First:06 May 2026,
Published:25 May 2026
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郭亚婷,高俊虹,刘群,等.“内膝眼”及“外膝眼”仿灸干预膝关节骨关节炎大鼠优效温度-波长参数研究[J].针刺研究,2026,51(5):612-623.
GUO Ya-ting,GAO Jun-hong,LIU Qun,et al.Study on optimal temperature-wavelength parameters of moxibustion simulator intervention at “Neixiyan” (EX-LE4) and “Waixiyan” (ST35) acupoints for knee osteoarthritis in rats[J].Acupuncture Research,
郭亚婷,高俊虹,刘群,等.“内膝眼”及“外膝眼”仿灸干预膝关节骨关节炎大鼠优效温度-波长参数研究[J].针刺研究,2026,51(5):612-623. DOI: 10.13702/j.1000-0607.20251131.
GUO Ya-ting,GAO Jun-hong,LIU Qun,et al.Study on optimal temperature-wavelength parameters of moxibustion simulator intervention at “Neixiyan” (EX-LE4) and “Waixiyan” (ST35) acupoints for knee osteoarthritis in rats[J].Acupuncture Research, DOI:10.13702/j.1000⁃0607.20251131.
目的
2
明确“内膝眼”和“外膝眼”仿灸干预改善膝关节骨关节炎(KOA)大鼠的温度及红外辐射波长优效参数。
方法
2
将雄性SD大鼠随机分为正常组、模型组、温和灸组和不同波长仿灸组,每组6只。大鼠膝关节腔内注射L-半胱氨酸和木瓜蛋白酶混合液制备KOA模型。通过红外辐射测量装置采集“内膝眼”与“外膝眼”的特征红外辐射波长。温和灸组分别于“内膝眼”与“外膝眼”单穴施加43 ℃艾条温和灸干预,仿灸组则分别施加温度43 ℃与不同波长(1 652、3 340、7 500 nm)参数组合的光热模拟刺激。分析大鼠步态空间、时间及动态参数,ELISA法定量评估血清抗炎因子白细胞介素-10(IL-10)含量,HE染色、Masson染色评估膝关节滑膜组织炎性反应和胶原化程度。
结果
2
大鼠KOA病理状态下特征红外辐射波长均约为3 340 nm。与正常组相比,模型组步态空间、时间及动态参数均显著改变(
P
<
0.001),血清IL-10含量显著降低(
P
<
0.05),滑膜Krenn评分、胶原面积百分比均显著升高(
P
<
0.000 1)。与模型组相比,“内膝眼”与“外膝眼”温和灸组及仿灸组空间参数(
P
<
0.001,
P
<
0.01,
P
<
0.05)及动态参数(
P
<
0.001,
P
<
0.01)均不同程度改善,“内膝眼”与“外膝眼”温和灸组、1 652 nm仿灸组、3 340nm仿灸组时间参数不同程度改善(
P
<
0.01,
P
<
0.05,
P
<
0.001),其中温和灸组及3 340 nm仿灸组的改善效果较其他参数仿灸组更优(
P
<
0.01,
P
<
0.001,
P
<
0.05)。与模型组相比,“内膝眼”温和灸组及“内膝眼”“外膝眼”3 340 nm仿灸组大鼠血清IL-10含量显著升高(
P
<
0.05,
P
<
0.000 1,
P
<
0.001),与其他参数仿灸组相比,“内膝眼”3 340 nm仿灸组血清IL-10含量显著升高(
P
<
0.000 1,
P
<
0.01)。与模型组相比,“内膝眼”与“外膝眼”温和灸及3 340 nm仿灸组大鼠滑膜Krenn评分及胶原面积百分比均显著降低(
P
<
0.01,
P
<
0.000 1,
P
<
0.05,
P
<
0.001),且3 340 nm仿灸组效果更优(
P
<
0.05)。
结论
2
大鼠“内膝眼”与“外膝眼”施加43 ℃结合3 340 nm参数组合的灸疗干预均可显著改善KOA大鼠步态功能并抑制炎性反应,且“内膝眼”与“外膝眼”的优效参数组合一致。其增效效应可能与灸疗产生的特定波长红外辐射与KOA病理状态下大鼠穴位自发红外辐射所形成的腧穴-灸疗红外辐射共振效应有关。
Objective
2
To identify the optimal temperature and infrared radiation wavelength parameters of moxibustion simulator intervention at “Neixiyan” (EX-LE4) and “Waixiyan” (ST35) acupoints for ameliorating knee osteoarthritis (KOA) in rats.
Methods
2
Male Sprague-Dawley (SD) rats were randomly assigned to a normal group, a model group, EX-LE4 or ST35 mild moxibustion groups, and EX-LE4 or ST35 moxibustion simulator groups with different wavelengths, with 6 rats in each group. The KOA model was established by intra-articular injection of a mixed solution of L-cysteine and papain into the left knee joint cavity. An infrared radiation measurement device was used to collect the characteristic infrared radiation wavelengths of EX-LE4 and ST35 acupoints. The mild moxibustion group received mild moxibustion intervention at EX-LE4 and ST35 acupoints separately with a moxa stick at 43 ℃, while the moxibustion simulator groups were treated with photothermal simulated stimulation with a fixed temperature of 43 ℃ combined with different wavelengths (1 652, 3 340, and 7 500 nm). The spatial, temporal and dynamic parameters of rat gait were analyzed. ELISA was performed to quantitatively determine the serum content of interleukin-10 (IL-10), an anti-inflammatory cytokine. HE staining and Masson staining were conducted to evaluate the inflammatory response and collagenization degree of synovial tissue of the knee joints.
Results
2
The characteristic infrared radiation wavelength of the acupoints was approximately 3 340 nm in rats under the pathological state of KOA. Compared with the normal group, the model group showed significant alterations in gait spatial, temporal and dynamic parameters (
P
<
0.001), a marked decrease in serum IL-10 level (
P
<
0.05), as well as significant elevations in synovial Krenn score and collagen area percentage (
P<
0.000 1). In comparison with the model group, the mild moxibustion group and moxibustion simulator groups at both EX-LE4 and ST35 acupoints exhibited varying degrees of improvement in gait spatial parameters (
P<
0.001,
P<
0.01,
P<
0.05) and dynamic parameters (
P<
0.001,
P<
0.01). The mild moxibustion group, 1 652 nm moxibustion simulator group and 3 340 nm moxibustion simulator group at both acupoints also achieved improvements in gait temporal parameters (
P<
0.01,
P<
0.05,
P<
0.001), with the mild moxibustion group and 3
340 nm moxibustion simulator group showing superior ameliorative effects compared with the moxibustion simulator groups with other parameters (
P<
0.01,
P<
0.001,
P<
0.05). Compared with the model group, the EX-LE4 mild moxibustion group, EX-LE4 3 340 nm moxibustion simulator group and ST35 3 340 nm moxibustion simulator group presented a significant increase in serum IL-10 contents (
P<
0.05,
P<
0.000 1,
P<
0.001). Moreover, the serum IL-10 contents in the EX-LE4 3 340 nm moxibustion simulator group was significantly higher than those in the moxibustion simulator groups with other parameters (
P<
0.000 1,
P<
0.01). In contrast to the model group, the mild moxibustion groups and 3 340 nm moxibustion simulator groups at both acupoints displayed significant reductions in synovial Krenn score and collagen area percentage (
P<
0.01,
P<
0.000 1,
P<
0.05,
P<
0.001), with the 3 340 nm moxibustion simulator group yielding the best therapeutic outcome (
P<
0.05).
Conclusion
2
Moxibustion intervention with the parameter combination of 43 ℃ and 3 340 nm at EX-LE4 and ST35 acupoints can significantly improve gait function and suppress inflammatory response in KOA rats, with consistent optimal parameter combinations for both acupoints. The synergistic effect may be attributed to the acupoint-moxibustion infrared radiation resonance effect formed between the specific wavelength infrared radiation generated by moxibustion and the spontaneous infrared radiation emitted by the acupoints of rats under KOA pathological conditions.
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