Lipid bound extended release buprenorphine(high and low doses)and sustained release buprenorphine effectively attenuate post-operative hypersensitivity in an incisional pain model in mice(Mus musculus)  

作　　者：Kaela Navarro Katechan Jampachaisri Monika Huss Cholawat Pacharinsak 

机构地区：[1]Department of Comparative Medicine,Stanford University,Stanford,CA,USA [2]Department of Mathematics,Naresuan University,Phitsanulok,Thailand

出　　处：《Animal Models and Experimental Medicine》2021年第2期129-137,共9页动物模型与实验医学（英文）

摘　　要：Background:Extended-release buprenorphine(XR)is indicated for pain management in rodents,but little is known about its use in mice.This study aimed to investigate whether high dose XR effectively attenuates post-operative hypersensitivity better than low dose XR in a mouse model of incisional pain.Methods:Mice(n 44)were randomly assigned to 1 of 4 treatment groups:(a)saline(1 ml/kg SC,once);(b)sustained release buprenorphine(Bup-SR,1 mg/kg SC,once);(c)low dose extended-release buprenorphine(XR-lo,3.25 mg/kg SC,once);(d)high dose extended-release buprenorphine(XR-hi,6.5 mg/kg SC,once).On days1,0(4 hours),1,2,and 3,mechanical and thermal hypersensitivities were evaluated,and plasma buprenorphine concentrations were measured.Results:Mechanical(days 0-2)and thermal(days 0-1)hypersensitivities were ob-served in the saline group.Bup-SR,XR-lo,and XR-hi attenuated mechanical hyper-sensitivity on days 0,1,and 2.None of the treatment groups,except XR-Lo on day 0,attenuated thermal hypersensitivity on days 0 or 1.Plasma buprenorphine concen-tration peaked at 4 hours(day 0)in all treatment groups and remained greater than 1 ng/mL on days 0-2.No abnormal clinical observations or gross pathologic findings were seen in any groups.Conclusion:The results indicate XR-hi did not effectively attenuate post-operative hypersensitivity better than XR-lo.Thus both 3.25 and 6.5 mg/kg XR are recom-mended for attenuating post-operative hypersensitivity for at least up to 48 hours in mice.

关 键 词：ANALGESIA ANALGESICS BUPRENORPHINE mouse pain management 

分 类 号：R965[医药卫生—药理学]