• Anesthesia and analgesia · Jun 2019

    Attenuation of Unevoked Mechanical and Cold Pain Hypersensitivities Associated With Experimental Neuropathy in Mice by Angiotensin II Type-2 Receptor Antagonism.

    • Andrew J Shepherd and Durga P Mohapatra.
    • From the Department of Anesthesiology and Washington University Pain Center, Washington University School of Medicine in St Louis, St Louis, Missouri.
    • Anesth. Analg. 2019 Jun 1; 128 (6): e84e87e84-e87.

    AbstractRecent findings from a phase II clinical trial showed analgesic effects of an angiotensin II type-2 receptor (AT2R) antagonist in postherpetic neuralgia patients. This study aimed to investigate whether AT2R antagonism could provide effective analgesia in voluntary measures of unevoked/ongoing pain-like behaviors in mice with experimental neuropathy. Mice were subjected to spared nerve injury to induce neuropathy and tested in 2 operant behavioral tests to measure ongoing mechanical and cold pain hypersensitivities. Systemic administration of an AT2R antagonist provided effective analgesia in these behavioral measures of mechanical and cold pain in spared nerve injury mice, suggesting its effectiveness in neuropathic pain.

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