人参皂苷纳米乳的制备及其免疫佐剂效应研究

目的:筛选最佳处方制备O/W人参皂苷纳米乳,考察其免疫佐剂效应.方法:根据纳米乳区和人参皂苷的溶解性,筛选人参皂苷纳米乳的处方;测定制剂的形态、粒径分布、pH、黏度及稳定性;以OVA为模式抗原,测定人参皂苷纳米乳免疫小鼠后血清OVA诱导特异性抗体水平.结果:筛选出Cremophor RH 40/甘油/IPM/水(K_m=1:1)制备20 g·L~(-1)人参皂苷纳米乳,为淡黄色透明液体,透射电镜下呈圆球形,平均粒径为72.2 nm,pH6.02,黏度4.20 s,理化性质较稳定;人参皂苷纳米乳和抗原同时免疫小鼠后,未见任何不良反应,GS-NE组IgG,IgG1和IgG2a抗体水平均显著高于OVA组和GS组;GS-NE组的IgG和IgG1抗体水平与铝佐剂组无显著性差异,但GS-NE组IgG2a抗体水平均显著高于铝佐剂组.结论:人参皂苷纳米乳稳定性很好,能增强机体对抗原的抗体产生能力,同时增强Th1和Th2免疫应答反应,具有开发佐剂的应用价值.     

人参皂甙Rg3对H22荷瘤小鼠免疫微环境的影响

[目的]探讨人参皂甙Rg3对H22荷瘤小鼠免疫微环境的影响。[方法]60只雌、雄昆明种小鼠随机分为生理盐水组(A组,5mL/kg)、华蟾素组(B组,5mL/kg)、低剂量人参皂苷Rg三组(C组,0.2mg/kg)、中剂量人参皂苷Rg3组(D组,1.0mg/kg)、高剂量人参皂苷Rg3组(E组,2.0mg/kg),每组12只,H22荷瘤模型建立后24h开始灌胃给药治疗,1次/d,连续8d,观察小鼠初始重量、处死重量、瘤体重量、CD3+、CD4+、CD8+、CD4+/CD8+等指标变化。[结果]各组荷瘤小鼠初始重量比较无统计学意义(P>0.05),处死重量、瘤体重量、B组、C组、D组、E组与A组比较分别比较差异均具有统计学意义(P<0.05);抑瘤率、CD3+、CD4+、CD4+/CD8+、存活小鼠生存时间,B组、C组、D组、E组均高于A组,生存时间以D组最长。[结论]不同剂量人参皂甙Rg3改善了H22荷瘤小鼠肿瘤所致的免疫抑制,其中以人参皂甙Rg3 1.0mg/kg剂量抑瘤效果最佳,小鼠生存时间最长,为临床应用提供了试验依据。     

八味地黄丸对Th1/Th2平衡的双向调节作用

探讨了八味地黄丸(HMG)对Th1/Th2平衡的免疫调节作用。材料和方法:①实验动物为7周龄雄性C57BL/6小鼠,将卵白蛋白(OVA)用弗氏完全佐剂(CFA)乳化,按每只小鼠100μgOVA加CFA0.2mL腹腔注射。另一组实验4μgOVA加入4mg明矾溶于0.2mLPBS缓冲液中,每只小鼠腹腔注射0.2mL。②对C57BL/6小鼠经口给予HMG(1000mg/kg),分为免疫前给药1周组、免疫后给药2周组以及共给药3周组。③血清中OVA特异性抗体IgE和IgG的检测:在免疫后14d,取血清用酶联免疫吸附测定法(ELISA)分别在包被OVA(10、100μg/mL)板及抗鼠IgG1和IgG2a的酶标板检测OV…     

加味五味石膏汤对卵清蛋白致小鼠变应性鼻炎的作用

目的:考察加味五味石膏汤对卵清蛋白(Optical Variable Attenuator,OVA)所致变应性鼻炎(Allergic rhinitis,AR)小鼠的治疗作用。方法:40只BALB/c雌性小鼠随机分为5组:空白对照组、OVA模型组、氯雷他定0.01 g/kg组、加味五味石膏汤5.46 g/kg、10.92 g/kg组。每组8只。除空白对照组外,其余均使用OVA制备AR模型。通过观察小鼠搔鼻和打喷嚏的行为,评估小鼠鼻部症状;采用HE及天狼星染色法观察鼻黏膜的炎症情况;采用ELISA法检测血清中免疫球蛋白E(Ig E)、肿瘤坏死因子(TNF)α、白细胞介素(IL)1β、IL-4和干扰素(IFN)γ的水平;采用Western Blot法检测鼻黏膜组织中转录因子T-bet和GATA-3蛋白的表达情况。结果:与空白对照组相比,AR模型小鼠的鼻部过敏症状较为明显,嗜酸性粒细胞的浸润显著,血清中Ig E、TNF-α、IL-1β、IL-4水平显著升高,IFN-γ水平显著性降低,而加味五味石膏汤5.46 g/kg、10.92 g/kg组能不同程度地显著改善小鼠的鼻部过敏症状,抑制血清中Ig E、TNF-α、IL-1β、IL-4的水平,增加血清中IFN-γ水平,增加鼻黏膜组织中T-bet的蛋白表达,降低GATA-3蛋白的表达量。结论:加味五味石膏汤对OVA所致小鼠AR具有治疗作用,与阳性药的治疗效果相当,其机制可能与调节Th1/Th2免疫失衡有关。     

三七总皂苷调节哮喘小鼠气道炎症的免疫分子机制研究

目的观察三七总皂苷(PNS)对哮喘小鼠气道炎症的疗效及对免疫细胞Th1/Th2平衡的调节作用,从免疫平衡的角度寻找其作用靶点,探讨PNS防治支气管哮喘的可能作用机制。方法将SPF级BALB/c雌性小鼠50只随机分成正常对照组、哮喘模型组及PNS低、中、高剂量组。以卵清白蛋白(OVA)腹腔注射及雾化激发法构建哮喘模型。观察小鼠肺组织病理变化,用酶联免疫吸附法(ELISA)检测各组小鼠血清中IL-4、IFN-γ的变化。结果 PNS低、中、高剂量组哮喘症状有所减轻,肺组织炎性细胞浸润减轻,且小鼠血清中IFN-γ的表达具有升高趋势,以低、中剂量组效果明显(P0.05和P0.01),PNS中剂量组和PNS高剂量组血清IL-4浓度明显降低(P0.01)。结论 PNS可减轻哮喘小鼠肺组织炎性细胞浸润,减少气道上皮黏液分泌,改善气道炎症状态。PNS防治哮喘的机制之一可能是通过上调哮喘小鼠IFN-γ的分泌,抑制IL-4的分泌,进而促进Th0向Th1分化,抑制Th0向Th2分化,恢复Th1/Th2平衡状态。     

不同品系小鼠异种被动皮肤过敏试验反应耳廓蓝染与血液抗体IgE和IgG水平的研究

目的观察卵白蛋白(OVA)致大鼠过敏抗血清对不同品系小鼠被动皮肤过敏试验(PCA)及血液免疫球蛋白E(IgE)和免疫球蛋白G(IgG)抗体水平变化的影响。方法 Wistar大鼠随机分为生理盐水(NS)组、NS佐剂组、OVA组、OVA佐剂组,采用皮下注射方式给予相应药物致敏,制备大鼠OVA抗体血清,并分别将其注入不同品系小鼠耳廓内,于致敏后3 h或48 h以相应药物激发,观察各组小鼠耳廓蓝染情况,并用酶联免疫吸附剂测定(ELISA)检测小鼠体内抗体水平变化。结果各品系小鼠(KM、BALB/c、ICR、C57BL/6、B6;129S-Fcgr2btm1Ttk/J)NS组、NS佐剂组、OVA组耳廓蓝染阴性,OVA佐剂组耳廓蓝染阳性,其中各品系间存在差异,小鼠耳异种PCA敏感程度强度依次为KM、BALB/c>ICR、C57BL/6、B6;129S-Fcgr2btm1Ttk/J。结论小鼠异种PCA试验中,不同品系动物对OVA抗血清的敏感性存在差异,其中KM,BALB/c小鼠较为敏感,但PCA强度与血液IgE水平无明显的相关性。     

益气涤痰化瘀方对哮喘小鼠气道炎症及Th1/Th2平衡的影响

目的:探讨益气涤痰化瘀方对哮喘小鼠气道炎症及Th1/Th2平衡的调节作用。方法:将SPF级BALB/c雌性小鼠50只随机分为正常对照组、哮喘模型组,益气涤痰化瘀方低、中、高剂量组。采用卵清白蛋白(OVA)腹腔注射及雾化激发法构建哮喘模型,益气涤痰化瘀方干预治疗。观察各组小鼠行为学改变;制作肺组织病理切片行镜下观察;收集肺泡灌洗液(BALF)进行白细胞总数及分类计数;取小鼠血清以ELI SA法检测I FN-γ、I L-4的变化。结果:1)与哮喘模型组比较,药物干预组哮喘症状有所减轻,肺组织炎性细胞浸润减轻;2)益气涤痰化瘀方中剂量组小鼠BALF中白细胞总数和嗜酸性粒细胞(EOS)、中性粒细胞(NEU)、淋巴细胞(LYM)分类计数较哮喘模型组减少(P0.05);3)与哮喘模型组比较,益气涤痰化瘀方高、中剂量组小鼠血清I FN-γ浓度升高(P0.05),I L-4浓度降低(P0.05)。结论:益气涤痰化瘀方可对免疫细胞Th2优势所致的免疫失衡状态进行调节,恢复Th1/Th2平衡;益气涤痰化瘀方可能通过调节机体平衡而减轻哮喘急性气道炎性病变,从而起到防治哮喘的作用。     

人参皂甙Rg3对小鼠免疫功能的影响

目的:观察人参皂甙Rg3对正常小鼠免疫功能的影响.方法:体外实验测定小鼠脾淋巴细胞转化和NK细胞活性;整体实验给小鼠灌胃人参皂甙Rg3 7天后,测定小鼠炭粒廓清速率、免疫器官重量、血清溶血素含量和抗体生成细胞数.结果:人参皂甙Rg3体外对T淋巴细胞增殖无明显影响,但能增强NK细胞吞噬活性.人参皂甙Rg3能增加整体大鼠血清溶血素含量和抗体生成细胞数,但对小鼠免疫器官重量和炭粒廓清速率无明显影响.结论:人参皂甙Rg3能增强正常小鼠体液免疫功能,部分增强非特异性免疫功能,对细胞免疫无明显影响.     

小檗碱通过抑制Th1恢复IFN-γ/IL-4平衡减轻迟发型超敏反应

目的:观察小檗碱对卵清蛋白(ovalbumin,OVA)诱导的迟发型超敏反应(delayed type hypersensitivity,DTH)模型小鼠的作用并探讨其机制。方法:32只小鼠随机分为对照组、DTH组、小檗碱组、DTH+小檗碱组,制备DTH模型给予小檗碱处理;测量小鼠足垫肿胀厚度,苏木精-伊红染色(hematoxylin-eosin staining,HE)法观察炎性细胞浸润,酶联免疫吸附测定(enzyme linked immunosorbent assay,ELISA)检测足垫组织匀浆中γ干扰素(interferon-γ,IFN-γ)、肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)和白介素-4(interleukin-4,IL-4)的表达,制备脾脏单个核细胞,刀豆蛋白(concanavalin A,Con A)实验观察IFN-γ水平,卵清蛋白(ovalbumin,OVA)致敏实验检测上清IFN-γ、IL-4表达。结果:小檗碱处理明显降低小鼠足垫肿胀程度,减少炎症细胞浸润,抑制足垫组织中IFN-γ、TNF-α炎性因子释放,并减少脾脏组织中IFN-γ的分泌,抑制Th1反应,恢复IFN-γ/IL-4平衡(P<0.01,P<0.001),差异均有统计学意义。结论:小檗碱通过抑制Th1反应,恢复IFN-γ/IL-4平衡发挥对迟发型超敏反应的抑制作用。     

五虎汤抑制STAT3蛋白调控树突细胞自噬治疗RSV诱发哮喘小鼠

目的:探讨五虎汤对呼吸道合胞病毒(RSV)诱发哮喘小鼠模型的治疗作用机制、肺组织信号传导及转录激活因子3(STAT3)蛋白表达的影响.方法:100只SPF级雌性BALB/c小鼠,用RSV复合鸡卵清蛋白(OVA)雾化吸入激发哮喘,造模成功后随机分为正常组、模型组、阳性药组(地塞米松,1.82 mg· kg-1),STAT...     

Adjuvant effect of ethanol extract of Semen Cuscutae on the immune responses to ovalbumin in mice

An ethanol extract of Semen Cuscutae (EESC) was evaluated for its adjuvant potentials on the cellular and humoral immune responses of ICR mice against ovalbumin (OVA). ICR mice were immunized subcutaneously with OVA 100 microg alone or with OVA 100 microg dissolved in saline containing aluminum hydroxide gel (Alum) (200 microg), Quil A (10 or 50 microg) or EESC (100, 200 or 400 microg) on Days 1 and 15. Two weeks later (Day 28), concanavalin A (Con A)-, pokeweed (PWM)- and OVA-stimulated splenocyte proliferation and OVA-specific antibody in serum were investigated. EESC significantly enhanced the Con A-, PWM-, and OVA-induced splenocyte proliferation in OVA-immunized mice at a dose of 200 microg (P<0.05 or P<0.025). OVA-specific IgG, IgG1 and IgG2b antibody levels in serum were significantly enhanced by EESC compared with OVA control group (P<0.025). Moreover, enhancing effects of EESC on these OVA-specific antibody responses to OVA in mice were more significant than those of Alum and Quil A (P<0.025). In conclusion, the results suggest that EESC is effective on Th1 and Th2 cell functions, and could be safely used as adjuvant.     

Haemolytic activities and adjuvant effect of Gynostemma pentaphyllum saponins on the immune responses to ovalbumin in mice

In this study, the haemolytic activities of Gynostemma pentaphyllum saponins (GPS) and its adjuvant potential on the immune responses of ICR mice against ovalbumin (OVA) were evaluated. GPS showed a slight haemolytic effect, with its haemolytic activity being 10.20% and 4.90% at concentrations of 500 and 250 microg/mL, respectively. ICR mice were immunized subcutaneously with OVA 100 microg alone or with OVA 100 microg dissolved in saline containing aluminium hydroxide gel (Alum, 200 microg), QuilA (10 and 20 microg) or GPS (50, 100 or 200 microg) on days 1 and 15. Two weeks later (day 28), concanavalin A (Con A)-, lipopolysaccharide (LPS)- and OVA-stimulated splenocyte proliferation and OVA-specific antibodies in serum were measured. GPS significantly enhanced the Con A-, LPS- and OVA-induced splenocyte proliferation in the OVA-immunized mice, especially at a dose of 100 microg (p < 0.05 or p < 0.001). OVA-specific IgG, IgG1 and IgG2b antibody levels in serum were also significantly enhanced by GPS compared with the OVA control group (p < 0.05, p < 0.01 or p < 0.001). In conclusion, the results suggest that GPS could be used safely as an adjuvant with low or no haemolytic effect.     

黑鳗藤新苷A的溶血性及其对卵清白蛋白免疫小鼠的免疫佐剂作用

目的:评价从黑鳗藤根中分离得到的C21甾体苷--黑鳗藤新苷A(stemucronatoside A,SA)的溶血性及免疫佐剂作用。方法:以分光光度法测定黑鳗藤新苷A对血红细胞的溶血百分率;以卵清白蛋白(OVA)100μg,OVA 100μg加氢氧化铝200μg,OVA 100μg加黑鳗藤新苷A 25μg、50μg和100μg于第1 d和15 d分别免疫ICR小鼠,二免后14天,用MTT法检测刀豆蛋白A(Con A),脂多糖(LPS)和OVA诱导脾淋巴细胞增殖反应,ELISA检测血清中的抗OVA抗体效价。结果:黑鳗藤新苷A显示轻微的溶血作用,其引起兔红细胞50%溶血的浓度(HD50)为331.39±26.16μg/ml。黑鳗藤新苷A在剂量为50和100μg时能显著增强Con A,LPS和OVA诱导的OVA受免小鼠脾淋巴细胞增殖反应(P<0.05 orP<0.01 orP<0.001);50μg时能极显著提高OVA受免小鼠血清中OVA特异性抗体IgG,IgG1和IgG2b的水平(P<0.01 orP<0.001)。结论:黑鳗藤新苷A具有较低的溶血性和显著的免疫佐剂活性。     

In vitro and in vivo immunosuppressive activity of Spica Prunellae ethanol extract on the immune responses in mice

The immunosuppressive activity of the ethanol extract of Spica Prunellae (Prunella vulgaris fruiting spikes) (EESP) consisting of a mixture of triterpenoids, flavonoids, tannins and polysaccharide was studied on the immune responses in mice. The effects of EESP on mice splenocyte proliferation in vitro were measured. EESP significantly suppressed concanavalin A (Con A)- and lipopolysaccharide (LPS)-stimulated splenocyte proliferation in vitro in a concentration-dependent manner. Furthermore, the effects of EESP at three dose levels (a single dose of 0.25, 0.5, and 1.0 mg) on the humoral and cellular immune responses of mice subcutaneously immunized with ovalbumin (OVA) were examined. ICR mice were immunized subcutaneously with OVA on day 0 and 14. Starting on the day of immunization, the mice were administered subcutaneously with EESP at 0.25, 0.5, and 1.0 mg at intervals of 7 days for a total of five doses. On day 28, antigen-specific antibodies in serum, mitogen- and OVA-induced splenocyte proliferation were investigated. EESP significantly suppressed Con A-, LPS- and OVA-induced splenocyte proliferation in the immunized mice in a dose-dependent manner. Total IgG, IgG1 and IgG2b levels in the immunized mice were significantly reduced by EESP. Moreover, the suppressing effects on the antibody responses to OVA in the immunized mice were dose-dependently enhanced according to the increase of EESP. The results suggest that EESP could suppress the cellular and humoral response in mice.     

Long-term oral administration of ginseng extract modulates humoral immune response and spleen cell functions

Ginseng radix (Panax ginseng C.A. Meyer) is a popular herbal medicine in Oriental countries. We investigated the effect of long-term oral administration of ginseng extract on the antigen-specific antibody response. Male BALB/c mice were treated orally for 30 consecutive days with 2 g/kg of a 50% ethanol extract of ginseng root. Mice treated with ginseng and immunized with ovalbumin (OVA), resulting in an eight-fold increase in titers of anti-OVA immunoglobulin (Ig)G in the serum compared to the group receiving OVA immunization without ginseng treatment; the level of IgG was also significantly elevated in the mice treated with ginseng and immunized with OVA. Mice treated with ginseng without OVA immunization exhibited significantly reduced IgG and IgA production by spleen cells. However, IgG production was not affected in mice treated with ginseng and OVA immunization in spleen cells. Interleukin (IL)-2, interferon (IFN)-gamma and IL-4 secretion by spleen cells from either ginseng-treated mice or OVA-immunized mice were down-regulated compared to that in the control group; while the production of IL-10 was unchanged. The percentage of CD8+ cells was significantly reduced in spleen cells from ginseng-treated, OVA-immunized mice. Thus, long-term oral administration of ginseng extract appears to potentiate humoral immune response but suppress spleen cell functions.     

Effect of various extracts and a polysaccharide from the edible mycelia of Cordyceps sinensis on cellular and humoral immune response against ovalbumin in mice

In this study, the edible mycelia of Cordyceps sinensis (Berk.) Sacc. were sequentially extracted by petroleum ether, ethyl acetate, ethanol and ultrasonic water-bath (75 degrees C), and the water extract was further isolated by Sephadex G-100 to afford a petroleum ether extract (PE), ethyl acetate extract (EAE), ethanol extract (EE), glycoprotein (GP) and a purified polysaccharide (PS). In combination with component analysis, the isolated PS showed d-Glc, d-Man, l-Ara and d-Gal in a molar ratio of 8:90:1:1. The average molecular weight of PS was determined as approximately 8.3 x 10(4). The immunomodulatory potentials of these samples (PE, EAE, EE, GP and PS) at three dose levels on the cellular and humoral immune responses of ICR mice against ovalbumin (OVA) were studied. ICR mice were immunized subcutaneously with 100 microg OVA alone or with 100 microg OVA dissolved in saline containing these samples (100, 200 or 400 microg) on days 1 and 15. Two weeks later (day 28), concanavalin A (Con A)- and OVA-stimulated splenocyte proliferation and OVA-specific antibody in serum were investigated. These samples, except for PS, significantly enhanced the Con A- and OVA-induced splenocyte proliferation in OVA-immunized mice at a suitable dose (p < 0.05 or p < 0.01). OVA-specific IgG, IgG1 and IgG2b antibody levels in serum were significantly enhanced by these extracts and PS compared with the OVA control group (p < 0.05, p < 0.01 or p < 0.001).     

Gynostemma pentaphyllum decreases allergic reactions in a murine asthmatic model

The increasing incidence of asthma in developing countries emphasizes the importance of identifying more effective treatments that have low cost. Gynostemma pentaphyllum (Thunb.) Makino (Cucurbitaceae), a common herbal tea in China, has been used to treat lung inflammation. Since the Th2 cytokines are the major mediators in the pathogenesis of asthma, Th1-biased immune responses caused by G. pentaphyllum might have the potential to relieve asthmatic symptoms. We hypothesized that oral administration of G. pentaphyllum extracts might suppress Th2 cytokine-induced airway inflammation responses in ovalbumin (OVA)-sensitive mice. BALB/c mice were sensitized with intraperitoneal injection and challenged 3 times with OVA inhalation (IH) (the IH3 model). G. pentaphyllum was orally administered for 7 consecutive days before the end of the OVA challenge. In the IH5 model, 2 more OVA challenges were administered to mimic the encounter with an allergen after drug treatment. G. pentaphyllum extracts significantly attenuated airway hyperresponsiveness (AHR) and inhibited eosinophil infiltration in mice in both models. Serum OVA-specific antibodies were also reduced with the treatment. Decreased Th2-type cytokines and increased IFN-gamma were detected in the cultures of OVA-activated splenocytes from treated mice. Our results suggest that G. pentaphyllum extracts might be beneficial for asthma airway inflammation through the suppression of Th2 activity.     

Juzen-taiho-to, a Japanese herbal medicine, modulates type 1 and type 2 T cell responses in old BALB/c mice.

Aging is associated with skewed type 2 (T2) T cell responses that may be modulated by herbal medicines. A group of Japanese herbal medicines, so-called "Hozai," have been used to improve the physical condition of the elderly. One representative "Hozai," Juzen-Taiho-To (JTX) appears to have beneficial effects on cancer patients. In this study we hypothesized that JTX modulated skewed T2 responses in the elderly. T1 and T2 responses against ovalbumin (OVA) were examined in old BALB/c mice fed JTX (0.2% w/w). We measured anti-OVA IgG1, IgG2a, and IgG2b antibody (Ab) levels after the primary and secondary OVA challenges; T1 and T2 responses augment IgG2a/IgG2b Ab and IgG1/IgE Ab production, respectively. We also assessed production of T1 and T2 cytokines (IFN-gamma and IL-5, respectively), and co-stimulatory molecule expression by regional draining lymph node cells. JTX-fed mice had higher IgG2b Ab and IFN-gamma production than controls along with lower IgG1 Ab. JTX did not alter IL-5 production or co-stimulatory molecule expression. Hoelen, an herbal component, induced similar changes. Our results indicate that JTX and Hoelen modulate T cell responses against OVA toward more balanced T1/T2 responses in old BALB/c mice. Such effects of JTX may help prevent the development of diseases associated with immunodisregulation in the elderly.     

清肺止哮汤对哮喘小鼠气道炎症的抑制及Th1/Th2平衡的影响

目的：探讨中药复方清肺止哮汤对哮喘小鼠气道炎症和外周血Th1/Th2平衡的影响。方法：用卵白蛋白（OVA）致敏、激发建立哮喘小鼠模型。末次抗原激发后48h收集血、支气管肺泡灌洗液（BALF）和骨髓标本,计数细胞总数和嗜酸性细胞（Eos）,检测外周血Th1/Th2反应,以及肺组织学检查。结果：清肺止哮汤可明显减少BALF中Eos数,能使肺组织中细支气管、血管周围的Eos浸润和黏液的过度分泌得到控制,但和布地奈德（BUD）组相比仍有显著性差异（P〈0.01）。经中药干预后外周血总的CD3^＋T细胞表达IL-4的细胞群/表达IFN-γ的细胞群与OVA组相比有显著性差异（P〈0.05）,其中Tc2/Tc1,Th2/Th1呈明显下降趋势。结论：清肺止哮汤能部分抑制哮喘小鼠气道炎症,并使外周血CD3^＋T表达IFN-γ的细胞群增加,对于哮喘时Th1/Th2失衡具有一定的纠偏作用。     

六味地黄颗粒协同辅舒酮吸入对哮喘大鼠气道炎症的抑制作用

目的:研究滋阴补肾代表方六味地黄颗粒协同辅舒酮吸入对大鼠哮喘模型过敏性气道炎症的作用。方法:W istar大鼠随机分成6组,除正常动物对照组外,其余各组均以卵蛋白(OVA)辅以氢氧化铝为佐剂注射致敏,2周后雾化吸入卵蛋白激发哮喘,建立哮喘模型。从实验第8天开始,给药组辅舒酮喷雾给药,六味地黄颗粒灌胃给药,正常组和模型组灌服生理盐水。正常组用生理盐水替代卵蛋白进行注射和吸入。结果:六味地黄颗粒加不同剂量辅舒酮组大鼠肺泡灌洗液中嗜酸性粒细胞均比哮喘模型对照组低,其差异均具有显著性意义(P<0.05)。肺支气管病理切片表明六味地黄颗粒协同不同剂量辅舒酮雾化吸入均可减轻特异性的致敏原所诱发的炎症和组织损伤。结论:六味地黄颗粒协同辅舒酮吸入具有减轻哮喘气道慢性炎症的作用。