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Nat Commun:疼痛性糖尿病神经病变是如何发生的?

2021-01-21 haibei MedSci原创

研究人员报告了糖尿病感觉神经元中POMC介导的抗痛觉功能障碍。在链脲佐菌素诱导的糖尿病小鼠中,由于NF-kB p50亚基结合增加,Pomc启动子被抑制,导致外周神经中基础POMC水平的丧失。

糖尿病期间,周围神经的结构和功能经常受到干扰,导致感觉运动神经病变。大约有一半的糖尿病周围神经病变(DPN)患者会出现慢性神经病理性疼痛的症状,包括剧烈的刺痛/烧灼感和痛觉,这进一步导致焦虑、睡眠障碍,并导致生活质量下降。

目前,治疗疼痛性DPN的主要方法包括影响突触性去甲肾上腺素和血清素再摄取的药物、钠通道阻滞剂和阿片类药物,此外还包括严格控制血糖。然而,这些方法都不能恢复疼痛DPN的感觉障碍。

最近,研究人员报告了糖尿病感觉神经元中POMC介导的抗痛觉功能障碍。在链脲佐菌素诱导的糖尿病小鼠中,由于NF-kB p50亚基结合增加,Pomc启动子被抑制,导致外周神经中基础POMC水平的丧失。

糖尿病患者的外周神经系统组织中也观察到POMC水平的降低

由于μ-阿片受体(MOR)的溶酶体降解,POMC介导的抗痛觉途径进一步受损。

重要的是,在感觉神经节中通过病毒过表达POMC和MOR后,糖尿病小鼠的神经病理表型得到拯救

该研究确定了感觉神经节的抗痛机制,为糖尿病神经病理性疼痛的潜在治疗铺平了道路

 

原始出处:

Divija Deshpande et al. Loss of POMC-mediated antinociception contributes to painful diabetic neuropathy. Nature Communications (2021). 

 

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    2021-11-04 liuli5079
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    2021-11-29 liye789132251
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    2021-01-23 axin012
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