[HTML][HTML] β-Caryophyllene, a CB2-receptor-selective phytocannabinoid, suppresses mechanical allodynia in a mouse model of antiretroviral-induced neuropathic pain

E Aly, MA Khajah, W Masocha - Molecules, 2019 - mdpi.com
Molecules, 2019mdpi.com
Neuropathic pain associated with nucleoside reverse transcriptase inhibitors (NRTIs),
therapeutic agents for human immunodeficiency virus (HIV), responds poorly to available
drugs. Smoked cannabis was reported to relieve HIV-associated neuropathic pain in clinical
trials. Some constituents of cannabis (Cannabis sativa) activate cannabinoid type 1 (CB1)
and cannabinoid type 2 (CB2) receptors. However, activation of the CB1 receptor is
associated with side effects such as psychosis and physical dependence. Therefore, we …
Neuropathic pain associated with nucleoside reverse transcriptase inhibitors (NRTIs), therapeutic agents for human immunodeficiency virus (HIV), responds poorly to available drugs. Smoked cannabis was reported to relieve HIV-associated neuropathic pain in clinical trials. Some constituents of cannabis (Cannabis sativa) activate cannabinoid type 1 (CB1) and cannabinoid type 2 (CB2) receptors. However, activation of the CB1 receptor is associated with side effects such as psychosis and physical dependence. Therefore, we investigated the effect of β-caryophyllene (BCP), a CB2-selective phytocannabinoid, in a model of NRTI-induced neuropathic pain. Female BALB/c mice treated with 2′-3′-dideoxycytidine (ddC, zalcitabine), a NRTI, for 5 days developed mechanical allodynia, which was prevented by cotreatment with BCP, minocycline or pentoxifylline. A CB2 receptor antagonist (AM 630), but not a CB1 receptor antagonist (AM 251), antagonized BCP attenuation of established ddC-induced mechanical allodynia. β-Caryophyllene prevented the ddC-induced increase in cytokine (interleukin 1 beta, tumor necrosis factor alpha and interferon gamma) transcripts in the paw skin and brain, as well as the phosphorylation level of Erk1/2 in the brain. In conclusion, BCP prevents NRTI-induced mechanical allodynia, possibly via reducing the inflammatory response, and attenuates mechanical allodynia through CB2 receptor activation. Therefore, BCP could be useful for prevention and treatment of antiretroviral-induced neuropathic pain.
MDPI
以上显示的是最相近的搜索结果。 查看全部搜索结果