科學家發現一個可用於鑑定持續實驗和臨床疼痛的神經影像生物標誌物
作者:
小柯機器人發布時間:2021/1/5 14:56:15
韓國基礎科學研究所Choong-Wan Woo、美國達特茅斯學院Tor D. Wager等研究人員合作發現一個可用於鑑定持續實驗和臨床疼痛的神經影像生物標誌物。該項研究成果於2021年1月4日在線發表在《自然—醫學》雜誌上。
研究人員開發了基於全腦功能連通性的功能磁共振成像特徵,該特徵跟蹤了實驗誘發的持續性疼痛強度,並在六項研究中測試了其對臨床疼痛的敏感性、特異性和通用性(總計n=334)。在三項有關口面部持續性疼痛和厭惡的獨立研究中,該特徵顯示出對持續性疼痛的高度敏感性和特異性。它還在兩項針對臨床下背痛的獨立研究中預測了臨床疼痛的嚴重程度,並對患者和對照組進行了分類。持續性和臨床疼痛表現出相似的網絡水平表徵,尤其是在軀體運動、額葉額葉和背部注意網絡中。這些模式與實驗性痛的表現形式不同。
這項研究確定了持續性疼痛的腦生物標誌物,並具有高度的臨床轉換潛力。
據了解,持續的疼痛是臨床疼痛疾病的主要特徵,但是很難與患者同時出現的認知和情緒特徵分開評估。
附:英文原文
Title: A neuroimaging biomarker for sustained experimental and clinical pain
Author: Jae-Joong Lee, Hong Ji Kim, Marta eko, Bo-yong Park, Soo Ahn Lee, Hyunjin Park, Mathieu Roy, Seong-Gi Kim, Tor D. Wager, Choong-Wan Woo
Issue&Volume: 2021-01-04
Abstract: Sustained pain is a major characteristic of clinical pain disorders, but it is difficult to assess in isolation from co-occurring cognitive and emotional features in patients. In this study, we developed a functional magnetic resonance imaging signature based on whole-brain functional connectivity that tracks experimentally induced tonic pain intensity and tested its sensitivity, specificity and generalizability to clinical pain across six studies (total n = 334). The signature displayed high sensitivity and specificity to tonic pain across three independent studies of orofacial tonic pain and aversive taste. It also predicted clinical pain severity and classified patients versus controls in two independent studies of clinical low back pain. Tonic and clinical pain showed similar network-level representations, particularly in somatomotor, frontoparietal and dorsal attention networks. These patterns were distinct from representations of experimental phasic pain. This study identified a brain biomarker for sustained pain with high potential for clinical translation. The functional magnetic resonance imaging connectivity pattern of tonic experimental orofacial pain can be used as a quantitative and unbiased biomarker of clinical pain.
DOI: 10.1038/s41591-020-1142-7
Source: https://www.nature.com/articles/s41591-020-1142-7