Drug resistance analysis of influenza virus to neuraminidase inhibitor from 2018 to 2019 in Hebei Province
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摘要:
目的 分析河北省2018-2019年流感流行季节流感病毒对神经氨酸酶抑制剂类(neuraminidase inhibitor, NAI)药物的耐药情况, 为流感的预防控制提供依据。 方法 选取H1N1(pdm09)亚型毒株25株、H3N2亚型毒株11株共36株流感病毒毒株进行生物学耐药实验, 使用荧光发光法检测病毒对奥司他韦和扎纳米韦的药物敏感性。 结果 2018-2019年河北省H1N1(pdm09)和H3N2亚型流感病毒全部对奥司他韦和扎那米韦敏感, 对奥司他韦的半数抑制浓度(half maximal inhibitory concentration, IC50)平均数分别为0.50 nM(0.07~1.14 nM)和0.25 nM(0.09~0.69 nM), 对扎那米韦的IC50平均数分别为0.29 nM(0.09~0.85 nM)和0.87 nM(0.17~1.81 nM), 均在相对应型别参考株IC50值10倍以内。 结论 2018-2019年河北省检测的流感毒株都对NAI类药物敏感。 Abstract:Objective To analyze the resistance of influenza virus to neuraminidase inhibitors(NAI) in Hebei province during 2018-2019. Methods Virus were collected from the Hebei Influenza Surveillance Network during 2018-2019. A total of 36 confirmed influenza viruses(with 25 H1 pdm09 and 11 H3 N2) were selected to test resistance to oseltamivir and zanamivi with fluorescence(FL). Results All 36 influenza viruses tested were sensitive to oseltamivir and zanamivir. The median half maximal inhibitory concentration(IC50) for oseltamivir of H1 pdm09 and H3 N2 were of 0.50 nM(range 0.07-1.14 nM) and 0.25 nM(range 0.09-0.69 nM) respectively, while 0.29 nM(range 0.09-0.85 nM) and 0.87(range 0.17-1.81 nM) for zanamivir, all were within 10 fold IC50 of the reference virus(corresponding type). Conclusion All the tested influenza strains isolated in Hebei province during 2018-2019 were sensitive to NAI. -
Key words:
- Influenza virus /
- Neuraminidase inhibitor /
- Resistance
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表 1 药物参考株对神经氨酸酶抑制剂药物的敏感性结果
Table 1. Sensitivity results of drug reference strains to neuraminidase inhibitor drugs
毒株名称 型别/亚型 NA基因氨基酸变异位点 耐药检测结果(nM) 奥司他韦 扎纳米韦 A/California/12/2012 H1N1 pdm09 275H 0.71 0.20 A/Texas/23/2012 H1N1 pdm09 H275Y 274.90 0.30 A/北京海淀/1942/2014 H3N2 119E 0.12 0.88 A/Texas/12/2007 H3N2 E119V 65.38 0.90 表 2 2018-2019年河北省流感毒株对神经氨酸酶抑制剂药物的敏感性结果
Table 2. Sensitivity results of influenza strains to neuraminidase inhibitors in Hebei Province from 2018 to 2019
序号 毒株名称 型别/亚型 采集日期 分离地区 传代史 HA滴度 IC50(nM) 奥司他韦 扎纳米韦 1 A/河北桥西/SWL1133/2019(H1) H1N1 pdm09 2019-2-13 张家口 C1 32 1.14 0.28 2 A/河北路南/SWL18/2019(H1) H1N1 pdm09 2019-01-01 唐山 C1 128 0.52 0.48 3 A/河北裕华/SWL112/2019(H1) H1N1 pdm09 2019-01-01 石家庄 C1 32 0.45 0.20 4 A/河北桥东/SWL13/2019(H1) H1N1 pdm09 2019-01-01 邢台 E2 32 0.57 0.85 5 A/河北运河/SWL13/2019(H1) H1N1 pdm09 2019-01-01 沧州 C2 16 0.38 0.18 6 A/河北桃城/SWL13/2019(H1) H1N1 pdm09 2019-01-01 衡水 E2 64 0.46 0.30 7 A/河北桥西/SWL1121/2019(H1) H1N1 pdm09 2019/2/11 张家口 C1 16 0.40 0.21 8 A/河北桥东/SWL1143/2019(H1) H1N1 pdm09 2019/2/12 邢台 C1 32 0.46 0.36 9 A/河北双桥/SWL1125/2019(H1) H1N1 pdm09 2019/2/8 承德 C2 128 0.59 0.32 10 A/河北运河/SWL1190/2019(H1) H1N1 pdm09 2019/2/6 沧州 E1 32 0.62 0.30 11 A/河北海港/SWL1567/2018(H1) H1N1 pdm09 2018/10/28 秦皇岛 C1 32 0.63 0.66 12 A/河北海港/SWL1515/2018(H1) H1N1 pdm09 2018/10/23 秦皇岛 C2 64 0.45 0.34 13 A/河北海港/SWL1510/2018(H1) H1N1 pdm09 2018/10/20 秦皇岛 C2 64 0.55 0.36 14 A/河北海港/SWL1648/2018(H1) H1N1 pdm09 2018/11/30 秦皇岛 C1 16 0.57 0.33 15 A/河北海港/SWL1647/2018(H1) H1N1 pdm09 2018/11/30 秦皇岛 C1 16 0.77 0.22 16 A/河北海港/SWL1642/2018(H1) H1N1 pdm09 2018/11/29 秦皇岛 C1 16 0.38 0.16 17 A/河北海港/SWL1637/2018(H1) H1N1 pdm09 2018/11/24 秦皇岛 C1 32 0.07 0.10 18 A/河北海港/SWL1634/2018(H1) H1N1 pdm09 2018/11/21 秦皇岛 C1 16 0.68 0.14 19 A/河北邯山/SWL148/2019(H1) H1N1 pdm09 2019/1/8 邯郸 C1 64 0.33 0.23 20 A/河北承德/SWL1612/2018(H1) H1N1 pdm09 2018/12/26 承德 C1 64 0.26 0.09 21 A/河北长安/SWL1676/2018(H1) H1N1 pdm09 2018/12/19 石家庄 C1 256 0.54 0.29 22 A/河北裕华/SWL1593/2018(H1) H1N1 pdm09 2018/12/19 石家庄 C1 64 0.49 0.18 23 A/河北桃城/SWL1800/2018(H1) H1N1 pdm09 2018/12/14 衡水 C1 16 0.46 0.18 24 A/河北海港/SWL1662/2018(H1) H1N1 pdm09 2018/12/4 秦皇岛 C1 32 0.24 0.24 25 A/河北路南/SWL11319/2018(H1) H1N1 pdm09 2018/12/28 唐山 C1 64 0.58 0.18 26 A/河北鹿泉/1102/2019(H3) H3N2 2019/1/29 石家庄 C1 32 0.10 0.17 27 A/河北新华/137/2019(H3) H3N2 2019-01-08 石家庄 C2 16 0.57 0.46 28 A/河北鹿泉/18/2019(H3) H3N2 2019-01-07 石家庄 C2 16 0.69 0.32 29 A/河北鹿泉/1108/2019(H3) H3N2 2019/2/11 石家庄 C2 16 0.35 0.30 30 A/河北邯山/1241/2019(H3) H3N2 2019/2/6 邯郸 C1 32 0.09 1.37 31 A/河北邯山/1238/2019(H3) H3N2 2019/2/7 邯郸 C1 64 0.11 1.78 32 A/河北邯山/1235/2019(H3) H3N2 2019/2/5 邯郸 C1 64 0.22 1.31 33 A/河北邯山/1229/2019(H3) H3N2 2019/2/5 邯郸 C1 32 0.17 1.58 34 A/河北邯山/1223/2019(H3) H3N2 2019/2/5 邯郸 C1 32 0.12 1.81 35 A/河北莲池/11350/2018(H3) H3N2 2018/12/25 保定 C2 16 0.11 0.18 36 A/河北莲池/11292/2018(H3) H3N2 2018/12/17 保定 C2 32 0.26 0.27 -
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