In Vitro Inhibition of Coxsackievirus by Blumea Balsamifera (L.)DC Extracts
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摘要:
目的 对艾纳香提取物体外抗柯萨奇病毒(CVB5)效果进行研究。 方法 采用倍数稀释的柯萨奇病毒液并将其与RD细胞共同孵育以确定其TCID50值;将不同浓度的艾纳香提取物添加到含有RD细胞的96孔板内,以此评估其对细胞活力的影响程度;在含有RD细胞及艾纳香提取物的96孔板内进一步观察艾纳香提取物对抗柯萨奇病毒的能力。 结果 柯萨奇病毒液的TCID50值为10−7.67。艾纳香提取物对柯萨奇病毒的抑制率随浓度的上升而增大,其针对柯萨奇病毒的IC50值则达到了7.26 mg/L。提取物在50 mg/L的浓度时可导致RD细胞活力降低(P < 0.05),但在6.25~50 mg/L的浓度范围里却能使含有病毒的RD细胞活力上升(P < 0.05),并且选择指数(SI)超过了6.89。 结论 艾纳香提取物具备体外对抗柯萨奇病毒的活性。 Abstract:Objective To investigate the in vitro antiviral effects of Blumea balsamifera(L.)DC. extract against Coxsackievirus B5 (CVB5). Methods A series of dilutions of Coxsackievirus were prepared and co-cultured with RD cells to determine the TCID50 value. Subsequently, different concentrations of the extract were added to a 96-well plate containing RD cells to evaluate their impact on cell viability. The ability of Blumea balsamifera extract to inhibit Coxsackievirus was further observed in the 96-well plate containing RD cells and the extract. Results The TCID50 value of Coxsackie virus solution was 10−7.67. The inhibition rate of Blumea balsamifera extract against Coxsackievirus increased with concentration, with an IC50 value of 7.26 mg/L. At a concentration of 50 mg/L, the extract caused a decrease in RD cell viability(P < 0.05), but within the concentration range of 6.25 to 50 mg/L, it increased the viability of virus-infected RD cells(P < 0.05), with a selectivity index (SI) exceeding 6.89. Conclusion Blumea balsamifera(L.)DC. extract exhibits in vitro activity against Coxsackievirus. -
Key words:
- Blumea balsamifera(L.)DC. /
- Antiviral agents /
- Coxsackie virus
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表 1 提取物对RD细胞活力的影响($\bar x \pm s $)
Table 1. Impact of extract on the viability of RD cells ($\bar x \pm s $)
分组 干预剂量 细胞活力(%) P 艾纳香组 50 mg/L 73.39 ± 0.26* 0.0195 25 mg/L 104.49 ± 0.46 P > 0.05 12.5 mg/L 108.28 ± 0.43 P > 0.05 6.25 mg/L 111.12 ± 0.40 P > 0.05 3.13 mg/L 121.40 ± 0.37* P < 0.05 1.56 mg/L 99.20 ± 0.04 P > 0.05 0.78 mg/L 115.27 ± 0.35 P > 0.05 0.39 mg/L 115.17 ± 0.45 P > 0.05 阳性药物组(Flu) 12.5 μM 101.68 ± 0.40 P > 0.05 空白对照组 仅含1%DMSO培养基 100 ± 0.43 与空白对照组比较,* P < 0.05;F(9,19) = 3.241,P = 0.0148 。表 2 提取物对病毒的抑制作用($\bar x \pm s $)
Table 2. Inhibitory effect of extract on virus ($\bar x \pm s $)
组别 干预剂量 细胞活力(%) 显著性(P) 显著性(P) 病毒抑制率(%) 艾纳香组 50 mg/L 54.12 ± 0.04**## < 0.0001 < 0.0001 78.69 ± 7.90 25 mg/L 86.43 ± 0.10** < 0.0001 0.4707 80.03 ± 9.74 12.5 mg/L 88.04 ± 0.01** < 0.0001 0.6942 77.63 ± 9.20 6.25 mg/L 39.12 ± 0.05**## < 0.0001 < 0.0001 20.41 ± 8.98 3.13 mg/L 8.44 ± 0.01## 0.9997 < 0.0001 0 1.56 mg/L 7.14 ± 0.01## 0.9970 < 0.0001 0 0.78 mg/L 7.98 ± 0.02## 0.9995 < 0.0001 0 0.39 mg/L 8.78 ± 0.01## 0.9998 < 0.0001 0 阳性药物组(Flu) 12.5 μmol/L 94.30 ± 0.07** < 0.0001 91.85 ± 5.81 空白对照组 仅含1%DMSO培养基 9.53 ± 0.02## -- 不加病毒 100 ± 0.43** -- 与加入病毒的空白对照组比较,F(9,20) = 132,*P < 0.05,**P < 0.01;与阳性药物组比较,F(8,18) = 1,#P < 0.05,##P < 0.01。 -
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