Evidence of Altered Trigeminal Nociception in an Animal Model of Fibromyalgia

Pain Medicine : the Official Journal of the American Academy of Pain Medicine
Masoud NazeriMohammad Shabani

Abstract

Fibromyalgia (FM) is a debilitating chronic condition that significantly affects quality of life. A strong association has been demonstrated between FM and chronic pain in the trigeminal region in clinical studies. This study was performed to evaluate the response to acute and chronic noxious stimuli applied to the facial region. Adult male Wistar rats (250-270 g, N = 10 for each group) were used in the current study. A subchronic swim stress model was used as the animal model of FM. Anxiety-like behaviors and response to acute and chronic noxious stimuli were assayed using the elevated plus maze, eye wiping test, and orofacial formalin test, respectively. Balance and motor function were evaluated using rotarod and wire grip tests. An increased anxiety-like behavior was observed in swim stress rats in comparison with control and sham subjects. Response to acute and chronic noxious stimuli in the trigeminal region was increased in the stressed rats. Motor and balance function were not altered following stress. Results of the current study demonstrated a hyperalgesic state in the trigeminal region in a possible animal model of FM. This study provides a reliable animal model for further research on the possible mechanisms of orofa...Continue Reading

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Citations

Dec 21, 2019·The International Journal of Neuroscience·Fatemeh MohammadiMohammad Shabani
Jan 28, 2020·The European Journal of Neuroscience·Mélanie KremerIpek Yalcin
Jul 3, 2021·International Journal of Molecular Sciences·Ramona D'AmicoRosanna Di Paola
Jul 16, 2021·Pharmacology & Therapeutics·Evelyne Silva BrumSara Marchesan Oliveira

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