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    兰娜, 胡国花. 低强度脉冲激光改善2型糖尿病db/db小鼠神经病理性疼痛研究[J]. 徐州医科大学学报, 2021, 41(2): 107-112. DOI: 10.3969/j.issn.2096-3882.2021.02.006
    引用本文: 兰娜, 胡国花. 低强度脉冲激光改善2型糖尿病db/db小鼠神经病理性疼痛研究[J]. 徐州医科大学学报, 2021, 41(2): 107-112. DOI: 10.3969/j.issn.2096-3882.2021.02.006
    The study of the attenuation of low-intensity pulsed laser on neuropathic pain in type 2 diabetic db/db mice[J]. Journal of Xuzhou Medical University, 2021, 41(2): 107-112. DOI: 10.3969/j.issn.2096-3882.2021.02.006
    Citation: The study of the attenuation of low-intensity pulsed laser on neuropathic pain in type 2 diabetic db/db mice[J]. Journal of Xuzhou Medical University, 2021, 41(2): 107-112. DOI: 10.3969/j.issn.2096-3882.2021.02.006

    低强度脉冲激光改善2型糖尿病db/db小鼠神经病理性疼痛研究

    The study of the attenuation of low-intensity pulsed laser on neuropathic pain in type 2 diabetic db/db mice

    • 摘要: 目的:研究低强度脉冲激光治疗对于2型糖尿病db/db小鼠神经病理性疼痛的治疗效果。方法:选取血糖高于16.7 mmol/L的雄性db/db小鼠20只以及同背景的野生型小鼠10只,实验分为3组,分别为对照组(Control)、2型糖尿病的db/db组(db/db)、db/db予以激光组(db/db+Laser)。db/db+Laser组小鼠施加低强度脉冲激光治疗4周,每天治疗3次,每次50秒,Control组和db/db组小鼠予以假暴露。分别于激光治疗的第0、1、2、3、4周对各组小鼠进行足底机械痛阈值、热痛阈值、感觉神经传导速率、运动神经传导速率检测,使用Real time RT-PCR检测p38丝裂原活化蛋白激酶(p38MAPK)和白细胞介素-1β(IL-1β)的mRNA的表达。结果:在未影响db/db小鼠体重和血糖的前提下,低强度激光在治疗的第1、2、3、4周均显著改善了db/db小鼠足底的机械痛阈值和热痛阈值(P<0.05),并在治疗的第1、2、3、4周显著提升了db/db小鼠的感觉神经和运动神经传导速率(P<0.05)。同时db/db+Laser组小鼠脊髓p38MAPK和IL-1β的基因表达水平显著低于db/db组小鼠(P<0.05)。结论:低强度脉冲激光对于缓解2型糖尿病小鼠神经病理性疼痛症状具有积极的治疗效果。

       

      Abstract: objective: To study the therapeutic effects of low-intensity pulsed laser on neuropathic pain in type 2 diabetic db/db mice. Methods: Twenty male db/db mice with glucose levels higher than 16.7 mmol/L and 10 wild-type mice with the same background were used. The mice were assigned to three groups, including the control (Control), type 2 diabetic db/db (db/db) and db/db with the laser treatment (db/db+Laser) groups. The mice in the db/db+Laser group were subjected to low-intensity laser treatment with 3 sessions per day and 50 sec per session for overall 4 weeks. The mice in the control and db/db groups were subjected to the sham exposure. The paw mechanical pain threshold, thermal pain threshold, sensory nerve conduction velocity, and motor nerve conduction velocity were determined at 0, 1, 2, 3, and 4 weeks post the laser treatment. The mRNA expression levels of p38 mitogen-activated protein kinase (p38MAPK) and interleukin-1β (IL-1β) were measured. Results: In the context of not affecting the body weight and glucose in db/db mice, low-intensity laser significantly improved the paw mechanical pain threshold and thermal pain threshold levels at Week 0, 1, 2, 3, and 4 post treatment (P<0.05), and also significantly increased the sensory nerve conduction velocity and motor nerve conduction velocity in db/db mice at Week 0, 1, 2, 3, and 4 post treatment (P<0.05). Moreover, the mice in the db/db+Laser group exhibited lower spinal p38MAPK and IL-1β expression levels than those in the db/db group (P<0.05). Conclusion: Low-intensity pulsed laser showed positive therapeutic effects on mitigating neuropathic pain in type 2 diabetic db/db mice.

       

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