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Preoperative anxiety induces chronic postoperative pain by activating astrocytes in the anterior cingulate cortex region
Gu, Damin; Zhou, Minmin; Han, Chao; Lei, Daoyun; Xie, Songhui; Yuan, Yanbo; Ma, Tieliang.
  • Gu, Damin; Jiangsu University. Yixing Hospital. Department of Anesthesiology. Yixing. CN
  • Zhou, Minmin; Jiangsu University. Yixing Hospital. Department of Anesthesiology. Yixing. CN
  • Han, Chao; Jiangsu University. Yixing Hospital. Department of Anesthesiology. Yixing. CN
  • Lei, Daoyun; Jiangsu University. Yixing Hospital. Department of Anesthesiology. Yixing. CN
  • Xie, Songhui; Jiangsu University. Yixing Hospital. Department of Anesthesiology. Yixing. CN
  • Yuan, Yanbo; Jiangsu University. Yixing Hospital. Department of Anesthesiology. Yixing. CN
  • Ma, Tieliang; Jiangsu University. Yixing Hospital. Department of Anesthesiology. Yixing. CN
Rev. Assoc. Med. Bras. (1992) ; 65(9): 1174-1180, Sept. 2019. graf
Article in English | LILACS | ID: biblio-1041070
ABSTRACT
SUMMARY OBJECTIVE The study aims to explore the relationship between preoperative anxiety and chronic postoperative pain. METHODS A total of forty rats were divided into four groups, control, single-prolonged stress alone, Hysterectomy alone, and SPS+ Hysterectomy. The paw withdrawal mechanical thresholds (PWMT) were examined. qRT-PCR and western blotting assay were performed to detect the GFAP expression in astrocytes isolated from the anterior cingulate cortex (ACC) region. In addition, the long-term potentiation (LTP) in ACC was examined. RESULTS Rats in the SPS group or the Hysterectomy alone group had no significant effect on chronic pain formation, but SPS can significantly induce chronic pain after surgery. Astrocytes were still active, and the LTP was significantly increased three days after modeling in the SPS+Hysterectomy group. CONCLUSIONS anxiety can induce chronic pain by activating astrocytes in the ACC region.
RESUMO
RESUMO OBJETIVO O objetivo deste estudo é explorar a relação entre a ansiedade no pré-operatório e a dor crônica no pós-operatório. MÉTODOS Um total de 40 ratos foram divididos em quatro grupos controle, estresse prolongado (SPS), histerectomia e SPS + histerectomia. Os limiares de retirada da pata em resposta a estímulo mecânico (PWMT) foram examinados. Ensaios qRT-PCR e imunoenzimáticos (western blotting) foram realizados para detectar a expressão de GFAP em astrócitos isolados da região do córtex cingulado anterior (CCA). Além disso, a potenciação de longa duração (LTP) no CCA também foi examinada. RESULTADOS Os ratos no grupo de estresse prolongado e no grupo de histerectomia não apresentaram nenhum efeito significativo na formação de dor crônica. Porém, o estresse prolongado foi capaz de induzir dor crônica significativamente após a cirurgia. Três dias após o modelo, o grupo de SPS + histerectomia ainda apresentava astrócitos ativos e LTP significativamente maior. CONCLUSÃO A ansiedade pode provocar dor crônica através da ativação de astrócitos na região do CCA.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Anxiety / Pain, Postoperative / Astrocytes / Chronic Pain Type of study: Etiology study / Prognostic study Limits: Animals Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2019 Type: Article Affiliation country: China Institution/Affiliation country: Jiangsu University/CN

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Full text: Available Index: LILACS (Americas) Main subject: Anxiety / Pain, Postoperative / Astrocytes / Chronic Pain Type of study: Etiology study / Prognostic study Limits: Animals Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2019 Type: Article Affiliation country: China Institution/Affiliation country: Jiangsu University/CN