Influence of behavioral traits in the inter-individual variability of nociceptive, emotional and cognitive manifestations of neuropathic pain

NEUROPHARMACOLOGY

卷:148

Article

Martinez-Navarro, M.¹  Lara-Mayorga, I. M.¹  Negrete, R.¹  Bilecki, W.³  Wawrzczak-Bargiela, A.³  Goncalves, L.²  Dickenson, A. H.²  Przewlocki, R.³  Banos, J. E.¹  Maldonado, R.^1,4 

[1] Univ Pompeu Fabra, Dept Expt & Hlth Sci, Lab Neuropharmacol, Barcelona, Spain

[2] UCL, Neurosci Physiol & Pharmacol, London WC1E 6BT, England

[3] Polish Acad Sci, Inst Pharmacol, Dept Mol Neuropharmacol, Krakow, Poland

[4] Hosp del Mar Med Res Inst IMIM, Barcelona, Spain

关键词: Neuropathic pain;    Behavioral traits;    Sociability;    Anxiety;    Depression;    Amygdala;   

DOI  :  10.1016/j.neuropharm.2019.01.012

来源: Elsevier

【 摘 要 】

Neuropathic pain is a complex disorder associated with emotional and cognitive deficits that may impair nociceptive manifestations. There is high inter-individual variability in the manifestations of human neuropathic pain, which largely depends on personality traits. We aim to identify the influence of different behavioral traits in the inter-individual vulnerability to neuropathic pain manifestations using behavioral, electrophysiological and genetic approaches. We first selected mice with extreme social and emotional traits and look for correlation with the spontaneous neuronal activity in the central amygdala. Neuropathic pain was induced to these mice to evaluate the influence of behavioral traits on nociceptive manifestations and gene expression profiles in the amygdala. Our results show an association of the spontaneous central amygdala neuronal activity with the sociability behavior. We demonstrate that low sociable, high anxious and low depressive phenotypes develop enhanced nociceptive hypersensitivity after nerve injury. However, greater emotional alterations and cognitive impairment are observed in high sociable, anxious-like and depressive-like mice, indicating that nociceptive, emotional and cognitive manifestations of neuropathic pain do not correlate with each other. Gene analyses identify high Pdyn and 116 levels in the amygdala as indicative of enhanced nociceptive hypersensitivity and reveal an association between high Gadd45 expression and attenuated emotional and cognitive manifestations of neuropathic pain.

【 授权许可】

Free