定量PCR检测黄芪A6组分与无环鸟苷联合抗1型单纯疱疹病毒的协同作用

目的：探讨抗疱疹病毒药物黄芪Ａ６组分（Ａ６）和无环鸟苷（ＡＣＶ）联合抗１型单纯疱疹病毒（ＨＳＶ１）的作用机制。方法：利用竞争ＰＣＲ检测Ａ６和ＡＣＶ联合抗ＨＳＶ１的协同作用，并与细胞病变（ＣＰＥ０抑制法进行比较。结果：竞争ＰＣＲ测定Ａ６、ＡＣＶ和Ａ６＿ＡＣＶ对ＨＳＶ１的最小抑制浓度（ＭＩＣ）分别为１．８８ｍｇ／ｍｌ、３．３７μｇ／ｍｌ、３．３７μｇ／ｍｌ和０．４７ｍｇ／ｍｌ＋０．８４μｇ／ｍｌ；ＣＰ     

地锦草总黄酮抗氧化作用的研究

地锦草总黄酮呈剂量依赖性的抗Ｏ－２·和·ＯＨ－的氧化作用。在ＶＢ２－Ｍｅｔ－ＮＢＴ体系中对Ｏ－２的ＳＣ５０＝０．５８μｇ／ｍｌ，ＩＣ５０＝０．３５μｇ／ｍｌ；在Ｖｉｔ·Ｃ－Ｃｕ２＋－Ｃｙｔｏ·Ｃ体系中对·ＯＨ－的ＳＣ５０＝２．４μｇ／ｍｌ，ＩＣ５０＝２．１μｇ／ｍｌ；在Ｖｉｔ·Ｃ－Ｆｅ２＋－ＤＲ体系中对ＭＤＡ的ＳＣ５０＝１５１．８μｇ／ｍｌ。地锦草的消肿、清热，伤口愈合等药效作用的发挥，可能与其清除和抑制自由基有关     

汉防己甲素和长春新碱对人视网膜母细胞瘤细胞系HXO－Rb_（44）生长的抑制作用

用汉防己甲素（ｔｅｔｒａｎｄｒｉｎｅ，ＴＤＲ）、长春新碱（ｒｉｎｃｒｉｓｌｉｎｅ，ＶＣＲ）分别对人视网膜母细胞瘤细胞系ＨＸＯ－Ｒｂ＿（４４）生长的影响进行观察，结果显示：ＴＤＲ在１～４０μｇ／ｍｌ范围内对ＨＸＯ－Ｒｂ＿（４４）细胞有明显抑制作用（Ｐ＜０．０５），半数抑制浓度ＩＣ５０为２．４５μｇ／ｍｌ；ＶＣＲ对该细胞系也有较强的抑制作用，ＩＣ５０为０．３１μｇ／ｍｌ。提示ＴＤＲ与ＶＣＷ一样，在体外对Ｒｂ细胞有较强的抑制作用，可能成为治疗视网膜母细胞瘤的新药。     

日本灵芝对小鼠脾细胞产生白细胞介素-2的影响

本实验研究日本灵芝对小鼠脾细胞产生白细胞介素－２（ＩＬ－２）的影响。结果表明在试管内氢化考的松０．０２５－１μｇ／ｍｌ及环胞霉素Ａ０．０５μｇ／ｍｌ可明显抑制小鼠脾细胞产生ＩＬ－２，Ｐ〈０．０１。灵芝在试管内能明显对抗氢化考的松及环胞霉素Ａ的抑制作用而促进ＩＬ－２产生增加，其作用与药物浓度有关，１０μｇ／ｍｌ以上有显著作用，Ｐ〈０．０１。灵芝不同浓度与氢化考的松同时对脾细胞进行预处理８ｈ后，灵芝…     

中国中医研究院中药研究所

大黄乙醇提取物的细胞毒性极低，２００００μｇ／ｍｌ未见细胞毒性，反而能促进细胞生长；在细胞培养上有明显的抗病毒作用，对单纯疱疹病毒（ＨＳＶ）的有效抑制浓度为１００μｇ／ｍｌ，并对ＨＳＶ的感染有预防作用和对病毒颗粒有直接杀伤作用。     

山地香茶菜对HIV—1作用的实验研究

为研究山地香茶菜提取物对艾滋病病毒１型（ＨＩＶ－１）有无抑制作用，按照以下ＭＴＴ法，进行了抗病毒实验研究。结果表明，山地香茶菜提取物Ｈ－１在０．６２５～２．５ｍｇ／ｍｌ剂量范围内，Ｈ－９在０．３１２５～０．６２５剂量范围内，对ＨＩＶ－１有一定抑制作用，其５０％有效浓度分别为０．５６６７ｍｇ／ｍｌ和０．２１５ｍｇ／ｍｌ。     

HPLC测定前列腺中依诺沙星含量及药动学研究

 采用高效液相色谱法，对前列腺中依诺沙星的测定和药动学进行了研究。固定相：Ｓｈｉｍａｄｚ－ＯＤＳ柱，流动相：甲醇－乙腈－０．１ｍｏｌ／Ｌ柠檬殴（４．５：１：９），检测器：ＳＰＤ－６ＡＶ，检测波长：２７２ｎｍ，流速：１．５ｍｌ／ｍｉｎ，标准曲线线性范围：０．５～５μｇ／ｍｌ，ｒ＝０．９９９６，平均回收率为９８．８％，ＲＳＤ为０．７％，用３Ｐ８７实用药代动力学程序进行数据处理，在前列腺中各药代动力学参数Ｔ＿（１／２Ｋｅ），Ｔ＿（ｐ，ｃ＿（ｍａｘ）），ＡＵＣ，Ｃｌ／Ｆ（ｓ）和Ｖｃ／Ｆ（ｃ）分别为２．２３ｈ，２．３７ｈ，７．４３μｇ／ｍｌ，３９．４７（ｈ·μｇ）／ｍｌ，１．２７Ｌ／（ｋｇ·ｈ）和４．０７Ｌ／ｋｇ，结果表明，依诺沙星很容易透渗到前列腺组织中去，前列腺药物浓度很高，为临床应用依诺沙星治疗前列腺炎提供了理论依据。     

植物多糖对S180、K562细胞增殖和唾液酸、磷脂、胆固醇含量的影响

本实验用ＭＴＴ比色分析法研究了茯苓多糖（ＰＰＳ）、刺五加多糖（ＡＳＰＳ）、银耳多糖（ＴＦ）和香菇多糖４种植物多糖对体外培养的小鼠腹水型肉瘤Ｓ１８０细胞和人慢性骨髓性白血病Ｋ５６２细胞增殖的影响，结果证实ＰＰＳ、ＡＳＰＳ在体外具有直接抗肿瘤作用。ＰＰＳ对两种种瘤细胞的半数有效抑制浓度（ＩＣ５０）均为１．５ｍｇ／ｍｌ，ＡＳＰＳ对Ｓ１８０和Ｋ５６２细胞的ＩＣ５０分别为０．３８ｍｇ／ｍｌ和０．２８ｍｇ／ｍ     

益肝片抑制HBsAg及调节免疫功能的实验研究

小鼠口服益肝片４．５ｇ／ｋｇ，脾脏相对重量增加２５．８％，抗体形成细胞（ＩｇＭ－ＰＦＣ）明显增加；口服３．３ｇ／ｋｇ，腹腔巨噬细胞吞噬百分数和吞噬指数分别提高９８．４２％和１００％；提高血清溶菌酶含量８１．０７％；体外实验，益肝片０．２５￣１ｋｇ／Ｌ有明显抑制ＨＢｓＡｇ的作用。     

中药复方双草退黄冲剂1号抗鸭乙型肝炎病毒作用的实验研究

目的：研究中药复方双草退黄冲剂１号（ＳＣＧ－１）对鸭乙型肝炎病毒的体内抗病毒作用。方法：以感染鸭乙型肝炎病毒（ＤＨＢＶ）的广州麻鸭为实验动物模型。１日龄广州麻鸭感染ＤＨＢＶ，１３天后血清ＤＨＢＶ－ＤＮＡ全部阳性，给予ＳＣＧ－１治疗１４天，于感染后第１３天（为用药前），用药７、１４天及停药后３天分别采血，采用斑点杂交方法检测血清ＤＨＢＶ－ＤＮＡ。结果：ＳＣＧ－１１０ｇ／（ｋｇ· ｄ）组，用药７、１４天鸭血清ＤＨＢＶ－ＤＮＡ　ＯＤ值均明显低于给药前，有显著性差异（Ｐ＜０．０５，Ｐ＜０．０１）；ＳＣＧ－１５ｇ／（ｋｇ．ｄ）组用药１４天血清ＤＨＢＶ－ＤＮＡ ＯＤ值亦明显低于用药前（Ｐ＜０．０５），但两组停药后３天均有反跳现象。结论：ＳＣＧ－１用药期间有一定的抑制ＤＨＢＶ－ＤＮＡ复制作用。     

不同产地南板蓝根抗病毒作用的研究

目的:观察不同产地南板蓝根抗病毒作用的差异.方法:分别建立流感病毒FM1株小鼠感染致死试验模型、单纯疱疹病毒I型家兔、小鼠感染模型等,对比考察不同产地南板蓝根抗病毒药效.结果:湛江、韶关产南板蓝根能明显延长流感病毒FM1株感染小鼠的平均存活天数,减少实验动物的死亡数;江门、湛江、韶关、梅州产南板蓝根能明显改善家兔HSV...     

朱砂七抗Ⅱ型单纯疱疹病毒的体外研究

目的:研究朱砂七粗提物和总蒽醌体外抗单纯疱疹病毒Ⅱ型(HSV-Ⅱ)的作用。方法:运用单纯疱疹病毒Ⅱ型(HSV-Ⅱ),以非洲绿猴肾细胞(Vero)作为宿主细胞,通过三种给药方式观察感染病毒后的细胞变性反应(CPE)和MTT比色法,检测不同浓度朱砂七粗提物和总蒽醌对Ⅱ型单纯疱疹病毒的直接杀灭、预防和阻止复制作用。结果:朱砂七粗提物和总蒽醌能抑制HSV-Ⅱ病毒的复制,但无预防和直接杀灭作用,朱砂七粗提物抑制HSV-Ⅱ病毒复制IC50为0.1008 mg/ml,治疗指数(TI)为6.2;总蒽醌抑制HSV-Ⅱ病毒复制IC50为0.0067mg/ml,治疗指数(TI)为11.66。结论 :朱砂七粗提物和总蒽醌在体外具有明显的保护宿主细胞抵抗HSV-Ⅱ病毒复制的作用。     

中药粉膜Ⅱ号体外抗HSV-2作用的实验研究

目的:研究中药粉膜Ⅱ号抗 HSV-2作用机理。方法:利用体外细胞培养技术,采用微量细胞病变抑制法来研究中药各浓度组的抑制病毒增殖作用、直接杀伤病毒作用及预防病毒感染细胞作用,本实验以病毒滴度和抑病毒指数为指标。结果:(1)抑制病毒增殖实验:中药粉膜Ⅱ号1.63、0.81、0.41mg/ml 浓度组的病毒滴度与病毒对照组比较,差异有显著性(P<0.01),抑病毒指数>2;(2)直接杀伤病毒实验:中药粉膜Ⅱ号1.63mg/ml—8h 组、1.63mg/ml—24h 组、0.81mg/ml—24h 组的病毒滴度与病毒对照组比较,差异有显著性(P<0.05),其余各组的病毒滴度与病毒对照组比较,差异无显著性(P>0.05);(3)预防作用实验:中药各浓度组的病毒滴度与对照组比较,差异无显著性(P>0.05)。结论:中药粉膜Ⅱ号具有抗 HSV-2病毒的作用,而无预防病毒感染细胞作用。     

余甘子提取物体外抗单纯疱疹病毒1型和2型的初步研究

目的 从余甘子的醋酸乙酯提取物、甲醇提取物和水提物3种提取物体外筛选抗单纯疱疹病毒1型和2型的活性成分.方法 通过观察药物毒性、病毒引起的细胞病变效应、空斑减数法,判断药物的毒性及其抗病毒效应.结果 余甘子的醋酸乙酯提取物、甲醇提取物和水提物对于单纯疱疹病毒1型的半数抑制浓度分别为25.28,66.17,100.94 μg/ml;余甘子的3种提取物对于单纯疱疹病毒2型的半数抑制浓度分别为31.70,180.3,112.1 μg/ml.结论 余甘子3种提取物在体外对单纯疱疹病毒1型和2型均有一定的抑制作用.     

Anti-Herpes simplex virus activity of Bidens pilosa and Houttuynia cordata

The present study evaluated the antiviral activity of Bidens pilosa L. var. minor (Blume) Sherff and Houttuynia cordata Thunb., using cytotoxicity test with XTT-based colorimetric assay. BCC-1/KMC cells were infected with herpes simplex virus (HSV) and then were cultured with hot water extract of B. pilosa (HWBP) or H. cordata (HWHC). Results showed that HWBP significantly inhibited the replication of HSV at a concentration of 100 microg/ml (11.9% for HSV-1, p < 0.01; 19.2% for HSV-2, p < 0.005), whereas HWHC had the same effect at a concentration of 250 microg/ml (10.2% for HSV-1, p < 0.05; 32.9% for HSV-2, p < 0.005). The ED50 of HSV type 1 (HSV-1) and HSV type 2 (HSV-2) for HWBP was 655.4 microg/ml and 960 microg/ml respectively, for HWHC it was 822.4 microg/ml and 362.5 microg/ml respectively. Both drugs had selective indexes above 1.04. H. cordata had better effect against HSV-2 than HSV-1, and had a low ED50 against HSV-2. We suggest that H. cordata might be a useful medicinal plant against infection of HSV-2.     

Antiviral and immunomodulatory effect of a lyophilized extract of Capparis spinosa L. buds

Herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2) are common human pathogens that in particular cases can also cause severe problems especially in immunodeficient patients. The present paper reports the antiviral and immunomodulatory properties of a methanolic extract of C. spinosa buds (CAP), rich in flavonoids, including several quercetin and kaempferol glycosides. In particular we have investigated whether the in vitro exposure of human peripheral blood mononuclear cells (PBMCs) to CAP might inhibit the replication of HSV-2 and modulate the induction kinetics of IL-12, TNF-alpha IFN-gamma. Our findings have shown that CAP treatment interferes with HSV-2 replication in PBMCs inhibiting the extracellular virus release upregulating their production of IL-12, IFN-gamma and TNF-alpha. One could speculate that CAP may contribute in improving immune surveillance of PBMCs toward virus infection by up-regulating expression of peculiar proinflammatory cytokines; it should thus be successfully employed for treatment of HSV-2 infections in immunocompromised hosts.     

Virucidal activity of essential oils from aromatic plants of San Luis, Argentina

Essential oils obtained from eight aromatic plants of San Luis Province, Argentina, were screened for virucidal activity against herpes simplex virus type 1 (HSV-1), Junin virus (JUNV) and dengue virus type 2 (DEN-2). The most potent inhibition was observed with the essential oil of Lippia junelliana and Lippia turbinata against JUNV with virucidal concentration 50% (VC(50)) values in the range 14-20 ppm, whereas Aloysia gratissima, Heterotheca latifolia and Tessaria absinthioides inhibited JUNV in the range 52-90 ppm. The virucidal activity was time- and temperature-dependent. The essential oils of A. gratissima, Artemisia douglasiana, Eupatorium patens and T. absinthioides inactivated HSV-1 at 65-125 ppm. However, only A. douglasiana and E. patens had any discernible effect on DEN-2 infectivity with VC(50) values of 60 and 150 ppm, respectively.     

Antiviral activity of galangin isolated from the aerial parts of Helichrysum aureonitens

The in vitro antiviral activity of galangin (3,5,7-trihydroxyflavone), the major antimicrobial compound isolated from the shoots of Helichrysum aureonitens, was investigated against herpes simplex virus type 1 (HSV-1), coxsackie B virus type 1 (Cox B1), adenovirus type 31 (Ad31) and reovirus. At concentrations ranging from 12–47 μg/ml galangin showed significant antiviral activity against HSV-1 and CoxB1, limited activity against reovirus, and no antiviral activity against Ad31.     

Inhibition of herpes simplex virus type 1 by aqueous extracts from shoots of Helichrysum aureonitens (Asteraceae)

Helichrysum aureonitens, a southern African medicinal plant reported to have antibacterial properties, was evaluated for antiviral activity against herpes simplex virus type 1 (HSV-1) in vitro. The crude aqueous extract from shoots of H. aureonitens at a concentration of 1.35 mg/ml (w/v) showed significant antiviral activity on HSV-1 in human lung fibroblasts as demonstrated by the absence of a cytopathic effect.     

Antiherpetic Activity of S1, an Algal Derived Sulphated Galactan

The sulphated galactan S1 isolated from the red seaweed Pterocladia capillacea proved to be a selective antiviral compound against herpes simplex virus types 1 and 2 (HSV-1 and HSV-2), human cytomegalovirus and pseudorabies virus. No cytotoxicity was observed with S1 at concentrations about 500 γ g/mL that were in excess of the IC₅₀ values (range from 3.2 to 12.0 γg/mL for the different herpesviruses assayed). The antiherpetic action of S1 was independent of the host cell and the antiviral assay. The kinetics of infectious virus adsorption to the host cell was highly inhibited in the presence of S1 whereas the subsequent stage of virus penetration was not affected. The binding of radiolabelled HSV-1 particles was inhibited in a dose dependent manner confirming that the mode of action of S1 could be attributable to an inhibition of initial virus attachment to the host cell.