应用近红外光谱技术鉴别红参药材

目的 应用近红外光谱(NIRS)技术鉴别红参及其伪品.方法 收集300份中国红参及多种红参伪品的近红外漫反射光谱,采用判别分析法对其进行定性鉴别.结果 近红外光谱法可正确鉴别红参与其伪品.结论 该方法快速、准确,可用于红参类药材的鉴别.     

人参茎叶皂甙及其与5-氟尿嘧啶合用的抗肿瘤研究

目的观察人参茎叶皂甙(GSL)及其与5-氟尿嘧啶(5-Fu)不同剂量合用对小鼠移殖性肿瘤S180的抑瘤作用,及对免疫器官的影响。方法采用昆明种小鼠,随机分组进行实验,观察GSL及其与5-Fu不同剂量合用与单用5-Fu对小鼠移殖性肿瘤S180抑瘤率的差别以及对胸腺指数、脾脏指数、肝脏指数的影响。结果5-Fu(25 mg/kg)、GSL(100 mg/kg)、GSL+5-Fu(100 mg/kg,25 mg/kg)、GSL+5-Fu(100 mg/kg,12.5 mg/kg)对小鼠S180均有抑制肿瘤生长的作用。抑瘤率分别为56.00%(P<0.01)、51.34%(P<0.01)、51.86%(P<0.01)、40.27%(P<0.01)。结论各给药组对小鼠移殖性肿瘤S180均有较强抑制肿瘤生长的作用,5-Fu可使荷瘤小鼠胸腺、肝脏、脾脏指数明显降低,而GSL对荷瘤小鼠胸腺、肝脏指数无明显降低,但对脾脏指数有明显降低,而与不同剂量5-Fu合用,不能预防荷瘤小鼠胸腺、肝脏、脾脏指数的降低。     

Effects of Wen-Pi-Tang and its crude drug extracts on proliferation of cultured mouse mesangial cells

The efficacy of Wen-Pi-Tang and each of its crude drug extracts on the proliferation of mouse mesangial cells was determined in terms of [³H]thymidine uptake. When Wen-Pi-Tang was added to the medium of mesangial cell cultures, it suppressed the proliferation of mesangial cells markedly. Similar to the effects of Wen-Pi-Tang, Rhei Rhizoma, its main ingredient, exerted an inhibitory effect on mesangial cell proliferation at a relatively low concentration. Ginseng Radix and Aconiti Tuber were also an effective crude drug. As for Zingiberis Rhizoma, an inhibitory activity at relatively high concentration was noted. However, the proliferation of mesangial cells in the presence of Glycyrrhizae Radix showed no particular alteration. As is clear from the results of the present study, Rhei Rhizoma, Ginseng Radix, Aconiti Tuber and Zingiberis Rhizoma alone each exert an inhibitory effect. The inhibition of mesangial cell proliferation by Wen-Pi-Tang can thus be explained by the action of these crude drugs.     

活血化瘀治则的药理学研究——(三)川芎、人参、丹参配伍对犬心肌组织内氧分压的影响

<正> 继3组活血药对犬急性心肌缺血的影响和对犬冠脉侧支循环影响的实验研究之后,本实验又进行了3组活血药对犬急性心肌缺血时心肌组织内氧分压影响的研究,以便进一步探讨其抗心肌缺血的机制。 一、材料和方法 实验用成年健康杂种犬,分5组。 对照组,川芎组(1g/kg),川芎加人参组(2g/kg),川芎加丹参组(2g/kg),异搏定组(0.4mg/kg),每组动物数3只。     

Ginseng and ginsenoside Rg3, a newly identified active ingredient of ginseng, modulate Ca2+ channel currents in rat sensory neurons

There is increasing evidence that ginseng influences pain modulation. In spite of extensive behavior studies, the detailed mechanism of ginseng actions at the cellular level and the identity of the active substance have not been elucidated yet. Whole-cell patch-clamp recordings were used to examine the modulation of high-voltage-activated Ca2+ channel currents by ginseng total saponins and its various individual ginsenosides in rat dorsal root ganglion neurons. Application of ginseng total saponins suppressed Ca2+ channel currents in a dose-dependent manner. Occlusion experiments using selective blockers revealed that ginseng total saponins could modulate L-, N-, and P-type currents. The co-application of ginseng total saponins and the gamma-opioid receptor agonist, D-Ala(2), N-MePhe(4), Gly(5)-ol-enkephalin (DAMGO), produced non-additive effects in most cells tested and each effect was significantly relieved by a depolarizing prepulse. Overnight treatment of cells with pertussis toxin profoundly reduced the inhibition. Furthermore, we now report that ginsenoside Rg3, among the major fractions of ginseng saponins, is a newly identified active component for the inhibition. These results suggest that the modulation of Ca2+ channels by ginseng total saponins, in particular by ginsenoside Rg3, could be part of the pharmacological basis of ginseng-mediated antinociception.     

软肝汤治疗慢性肝炎后肝纤维化的临床观察

观察软肝汤治疗慢性肝炎后肝纤维化的临床疗效。将60例患者随机分成软肝汤治疗组和人参鳖甲煎丸对照组各30例,观察其对症状,体征,肝功能,肝纤维化指标的改善作用,疗程6个月,结果：治疗组对症状体征有明显改善,其中神疲乏力症状的改善与对照组相比有显著差异P＜0．01,对肝功能指标G,γ－球蛋白的改善治疗前后有显著差异P＜0．05,γ－球蛋白的改善与对照组相比也有显著差异P＜0．01,对肝纤维化指标HA,IVC,PIIIP,LN的改善治疗前后均有显著差异P＜0．01,与对照组相比HA,LN,IVC有显著差异P＜0．05,总有效率治疗组为83．33％, 对照组为73．33％（P＜0．05）,治疗组显效率33．33％,对照组23．33％（P＜0．01）,提示软肝汤对治疗乙型病毒性肝炎肝纤维化,早期肝硬化有较好疗效。     

New staining methodology: Eastern blotting for glycosides in the field of Kampo medicines

Ginsenosides separated by silica gel TLC blotted to a polyvinylidene difluoride (PVDF) membrane treated with a NaIO₄ solution followed by bovine serum albumin (BSA) resulted in a ginsenoside–BSA conjugate on a PVDF membrane. The blotted spot were stained by antiginsenoside Rb1 (GRb1) and Rg1 (GRg1) monoclonal antibodies (MAbs). The newly established immunostaining method, Eastern blotting, was applied for the determination of ginsenosides possessing protopanaxadiol and/or protopanaxatriol in the Kampo medicines. In this method, we developed a new way to separate the ginsenoside molecule into two functional parts using a simple and well-known chemical reaction. The sugar parts were oxidized by sodium periodate to give dialdehydes, which reacted with amino groups of the protein and covalently bound to the adsorbent PVDF membrane. The MAb bound to the aglycone part of the ginsenoside molecule for immunostaining. Double staining of Eastern blotting for ginsenosides using anti-GRb1 and GRg1 MAbs promoted complete identification of ginsenosides in Panax species. This method was validated for immunocytolocalization of ginsenosides in fresh ginseng root. In addition, Eastern blotting for the detection of glycyrrhizin (GC) was also investigated. GC can be clearly determined by Eastern blotting in the Glycyrrhiza species. It is also possible for GC in rat serum to be surveyed by Eastern blotting by simple pretreatment as a further application.     

加味参苓白术散治疗抗结核药致胃肠道副反应40例观察

目的:观察加味参苓白术散治疗脾胃虚弱型及气阴两虚型肺结核患者化疗期间胃肠道副反应的疗效。方法:68例随机分为治疗组40例及对照组28例。治疗组用加味参苓白术散治疗,对照组用胃复安、施尔康治疗,均30天后统计结果。结果:治疗组总有效率90.0%,对照组总有效率85.7%,两组比较有显著性差异(P<0.05)。结论:加味参苓白术散治疗脾胃虚弱型及气阴两虚型肺结核患者胃肠道副反应有较好疗效。     

西洋参、红参X射线衍射傅里叶指纹图谱鉴定

目的:建立X射线衍射傅里叶(Fourier)指纹图谱鉴定西洋参与红参。方法:对28个西洋参样品,14个红参样品粉碎,建立指纹图并寻找指纹图共同的几何拓扑。结果:西洋参有34个(进口)和39个(国产)特征标记峰,红参有52个(朝鲜)和48个(国产)特征标记峰,它们几何拓扑无差异。结论:微观衍射物理图象鉴定人参类药材是可行的。     

人参多糖体外诱导人非小细胞肺癌A549细胞凋亡的实验研究

目的研究人参多糖体外对人非小细胞肺癌A549细胞增殖及凋亡的作用。方法应用MTT法、流式细胞仪、Annexin V-PI双标、Hoechest荧光染色、TUNEL法等多种方法,体外研究人参多糖对A549细胞的凋亡作用；采用免疫组化的方法,观察药物作用后bcl-2表达的变化。结果人参多糖对A549细胞生长具有抑制作用,并有促凋亡效应；对细胞周期的影响表现为G_0/G_1期的阻滞,未见bcl-2表达的下调。电镜和Hoechst、TUNEL法都可观察到凋亡形态学的改变。结论人参多糖可抑制人非小细胞肺癌A549细胞的生长,并诱导细胞发生凋亡,这有可能是人参多糖抗肿瘤作用机制之一,其凋亡的发生与bcl-2的表达无明显关系。