A heteropolysaccharide from Rhodiola rosea L.:preparation,purification and anti-tumor activities in H22-bearing mice

Numerous polysaccharides isolated from plants have been used to augment traditional drugs in the treatment of cancer.In order to explore the influence to hepatocellular carcinoma,a novel cold water-soluble polysaccharide was separated from Rhodiola rosea L.root(RLP)and then its structure and anti-cancer activities were tested.The chemical compositions and high performance gel permeation chromatography(HPGPC)results indicated that RLP was an acid heteropolysaccharide with the molecular weight of about1.15×10~6 Da.Furthermore,ion chromatography(IC),Fourier transform infrared(FT-IR)and nuclear magnetic resoance(NMR)further indicated that RLP was main composed of→2,4)-α-Rha(1→,→5)-α-L-Araf-(1→,α-D-Glu,→6)-β-D-Galp-(1→,β-D-Man and→4)-α-GalpA-(1→.In vivo antitumor activities of RLP were carried out by using H22 tumor-bearing mice model.The results shown that RLP(100 and 300 mg/kg)could inhibit tumor growth of H22 cells from 23.59%to 45.52%and protect thymuses and spleen without damage.In addition,according to cell cycle,AV-FITC/PI and JC-1,RLP could induce dose-dependent apopto sis of H22 cells via S phase arrested which was through a mitochondrial related pathway.Our data indicated that RLP has a broader application prospect in anti-tumor preparations.

In silico analysis and experimental validation of active compounds from Rhodiola rosea L. ameliorating pulmonary fibrosis

Aim Rhodiola rosea L. possesses a wide range of pharmacological properties including lung-protective, and it has been implemented in folk medicine for several 100 years. However, the accurate mechanisms of its lung- protective activity remain unclear. This study aimed at investigating the possible mechanisms of lung-protective activity of Rhodiola rosea L. in pulmonary fibrosis model. Methods Pathological observation, ROS detection and measure- ments of biochemical indexes on rat models proved lung-protective effect of Rhodiola rosea L. Identification of active compounds in Rhodiola rosea L. was executed through several methods including UPLC-TOF-MS. SEA docking, too- lecular modeling, molecular docking, and molecular dynamics （MD） simulation were applied in this study to explore possible mechanisms of the lung-protective potential of Rhodiola rosea L. Furthermore, in vitro cytological examina- tion and Western blot were used for validating the efficacy of the selected compounds. Results Experiments on rat models showed a potent lung-protective effect of Rhodiola rosea L. Then we analyzed the chemical composition of Rhodiola rosea L. and found out their key targets. Moreover, in silico analysis results testified good interaction be- tween selected compound 13 and key targets Akt-1/Caspase-1, and compound 10 also interacts well with Akt-1. Fur- ther Western blot analysis proved changed expression levels of those target proteins, indicating that selected small compounds indeed acted on those targets. Conclusion In silico analysis and experimental validation together demon- strated that selected compound 10 in Rhodiola rosea L. targeted Akt-1 in hepatocytes. Besides, compound 13 targeted both Caspase-1 and Akt-1. These small compounds may ameliorate pulmonary fibrosis by acting on their targets which are related to apoptosis or autophagy. The conclusions above may shed light on the complex molecular mechanisms of Rhodiola rosea L. acting on pneumonocyte and ameliorating pulmonary fibrosis.

基于UPLC-Q-TOF-MS技术快速分析红景天叶的化学成分

目的:采用超高效液相色谱-四极杆飞行时间质谱(UPLC-Q-TOF-MS)技术,对红景天叶中的主要酚类、鞣质和黄酮类成分进行分析鉴定。方法:80%甲醇提取物分离采用WatersBEH C_(18)(2.1×100mm,1.7μm),以0.1%甲酸水(A)-乙睛(B)为流动相梯度洗脱进行色谱分离,流速0.3mL/min,检测波长为280nm,负离子模式下采集数据,依据高分辨质谱提供的分子离子峰和二级碎片离子,并与文献或对照品比对,确定化合物可能的结构。结果:从红景天叶中鉴定出54个化学成分,包括11个酚酸类、25个鞣质类、18个黄酮类化合物,这是首次系统研究了红景天叶中的功能成分。结论:该方法可为红景天叶的化学成分质谱裂解规律和药效物质基础提供科学依据。

Pretreatment with Rhodiola Rosea Extract Reduces Cognitive Impairment Induced by Intracerebroventricular Streptozotocin in Rats: Implication of Anti-oxidative and Neuroprotective Effects

Objective To investigate the pretreatment effects of Rhodiola rosea （R. rosea） extract on cognitive dysfunction, oxidative stress in hippocampus and hippocampal neuron injury in a rat model of Alzheimer＇s disease （AD）. Methods Male Sprague-Dawley rats were pretreated with R. rosea extract at doses of 1.5, 3.0, and 6.0 g/kg for 3 weeks, followed by bilateral intracerebroventricular injection with streptozotocin （1.5 mg/kg） on days 1 and 3. Behavioral alterations were monitored after 2 weeks from the lesion using Morris water maze task. Three weeks after the lesion, the rats were sacrificed for measuring the malondialdehyde （MDA）, glutathione reductase （GR） and reduced glutathione （GSH） levels in hippocampus and histopathology of hippocampal neurons. Results The MDA level was significantly increased while the GR and GSH levels were significantly decreased with striking impairments in spatial learning and memory and severe damage to hippocampal neurons in the model rat induced by intracerebroventricular injection of streptozotocin. These abnormalities were significantly improved by pretreatment with R. rosea extract （3.0 g/kg）. Conclusion R. rosea extract can protect rats against cognitive deficits, neuronal injury and oxidative stress induced by intracerebroventricular injection of streptozotocin, and may be used as a potential agent in treatment of neurodegenerative diseases such as AD.

Effect of Ethanol Extract of Rhodiola Rosea on the Early Nephropathy in Type 2 Diabetic Rats

Summary： This study aimed to investigate the therapeutical effects of Rhodiola rosea extract on rats with type 2 diabetic nephropathy （DN）. The rat type 2 DN model was established by high fat and high calorie feeding and intravenous injection of streptozocin （STZ）. Wistar rats were randomly divided into normal group, control group, low dose Rhodiola rosea group, high dose Rhodiola rosea group and Cap- topril group. Oral glucose tolerance test （OGTT） was performed to determine the impairment of glucose tolerance in the established animal model. A series of parameters including fasting blood glucose （FBG）, total cholesterol （TC）, triglyceride （TG）, creatinine clearance rate （Ccr）, 24-h urinary albumin （UA）, the ratio of kidney mass/body weight （renal index） and glomerular area were examined after 8 weeks. Moreover, the expression of transforming growth factor （TGF）-β1 in renal tissues was detected by using immunohistochemisty. At the end of the eighth week, FBG, TC, TG, Ccr, 24-h urinary albumin, the ratio of kidney mass/body weight and glomerular area were significantly reduced in Rhodiola rosea extract treatment groups as compared with those in control group. TGF-β1 expression in renal tissues of Rhodiola rosea extract treatment groups was also significantly decreased as compared with that of con- trol group. These results indicate that Rhodiola rosea extract may have a protective effect on early nephropathy in diabetic rats, which might be related to the decrease of the renal expression of TGF-β1.

Neuropharmacological Characterization of Extracts from Rhodiola rosea, Oenothera paradoxa and Paullinia cupana in Comparison to Caffeine

To find possible therapeutic applications involving the Central Nervous System (CNS) for herbals is a major challenge during functional food and drug discovery and development programmes. Despite the availability of numerous in vitro and in vivo tests, there is no single agreed screening procedure for pharmacological testing of herbal extracts with anticipated CNS activity. Experience gained from more than 25 years of testing has shown that two models give reasonably reliable orientation for future CNS applications: construction of an electropharmacogram based on wireless recording of field potentials from the depth of the brain of freely moving rats (Tele-Stereo-EEG) and recording of the population spike produced by pyramidal cells from hippocampal slices in vitro. A combination of these two methods has now been used to characterize the pharmacological profile of extracts from Rhodiola rosea root, Oenothera paradoxa seeds and Paullinia cupana seeds. Spectral analysis of field potentials revealed attenuation of alpha2 and beta1 waves was common for all extracts. According to previous studies, this is interpreted as activation of the dopaminergic and glutamatergic transmission. In addition, Oenothera and Rhodiola extracts attenuated delta and theta power, probably related to interference with the cholinergic and norepinephrinergic transmission, respectively. Using discriminant analysis for comparison with reference pharmaceutical and botanical drugs, Rhodiola projected near the position of Ginkgo extract, whereas Oenothera extract was projected near the position of Tramadol, an analgesic drug. Physical motion was increased only in the presence of Paullinia extract and caffeine. Increases of long-term potentiation were observed in the presence of Rhodiola extract, Paullinia extract and caffeine. The combined information predicts stimulant and cognitive function-enhancing activities in humans for the Rhodiola extract, which could also be used as a possible caffeine-replacement, and antidepressant and analgesic activity for the Oenothera extract.

红景天(Rhodiola L)的研究进展

文章综述了红景天研究概况,主要介绍了红景天的主要化学成分及药用价值,其中药用价值主要包括抗衰老作用、抗缺氧作用、双向调节作用、抗疲劳作用、抗辐射作用及抗肿瘤作用,并就红景天开发中存在的问题及未来研究的方向提出建议。

蜀葵ArbHLH148基因克隆与表达分析

为解析蜀葵ArbHLH148基因在雄蕊瓣化中的功能,以红色重瓣蜀葵花朵为试材,结合转录组数据,采用逆转录PCR方法克隆了ArbHLH148基因,并对其序列特征和表达特性进行了分析。结果表明,ArbHLH148基因cDNA序列全长为672 bp,该基因与树棉bHLH148转录因子基因具有80%的一致性(E值为1e-119)。在系统进化上,ArbHLH148与拟南芥AtbHLH147、AtbHLH148、AtbHLH149、AtbHLH150关系很近,而且其具有典型的碱性螺旋-环-螺旋保守结构域(Basic helix‑loop‑helix,bHLH)。氨基酸序列预测显示,该蛋白质是位于细胞核内的亲水性蛋白,也是没有跨膜区的非分泌蛋白。组织特异性表达分析显示,ArbHLH148及其功能相关基因ArIAA1、ArARF8、ArTIR1在萼片、花瓣、雄蕊和瓣化雄蕊中均有表达,但其在雄蕊中的表达量相对较多,在花瓣、瓣化雄蕊中的表达量依次减少,这与生长素信号相关基因ArIAA1、ArARF8、ArTIR1在雄蕊、花瓣、瓣化雄蕊中的表达模式及生长素含量变化相似。表明ArbHLH148基因和生长素信号相关基因的表达差异可能是产生雄蕊瓣化的原因。

Traditional Chinese medicine for acute mountain sickness prevention: A systematic review and meta-analysis of randomized controlled trials

Objective: To evaluate the efficacy of traditional Chinese medicine(TCM) for preventing acute mountain sickness(AMS).Methods: We included randomized controlled trials(RCTs) which evalueded the effect of TCM for preventing AMS, compared with a placebo, no treatment or acetazolamide. The literature was searched in 6major databases. RevMan 5.4 software was used for the meta-analysis. The relative risk for discrete variables and the mean difference for continuous variables with 95% confidence intervals(CIs) were applied to express the effect size. The risk of bias in the included studies was evaluated using the Cochrane risk assessment tool 2.0(RoB 2.0), and the evidence certainty was assessed using the Grading of Recommendations Assessment and the Development and Evaluation(GRADE) approach.Results: Twenty RCTs involving 3015 participants and 16 TCM patent drugs were included. The overall risk of bias in the majority of studies(15/20) was of some concerns. In terms of the AMS incidence,Rhodiola rosea(R. rosea, Hong Jing Tian) and Ginkgo biloba(G. biloba, Yin Xing Ye) were equivalent to the placebo/no treatment [RR(95% CI): 0.66(0.43-1.01), 0.82(0.63-1.06), respectively]. The AMS incidence in the G. biloba group was higher than that in the acetazolamide group [RR(95% CI): 2.92(1.69-5.06)]. In terms of improving the AMS symptom score on days 1 and 3 in the plateau, R. rosea and G. biloba were superior to the placebo or no treatment [MD(95% CI):-0.98(-1.71,-0.25),-2.05(-3.14,-0.95), respectively]. The other 14 Chinese patent medicines were evaluated in a single trial, and the majority of the results were negative. The subgroup analysis showed that the effect of R. rosea was related to the intervention time, way of ascending, and altitude.Conclusion: R. rosea and G. biloba were effective in improving AMS symptoms but had no effect in reducing the AMS incidence. There was insufficient evidence to support the use of other TCM patent drugs to prevent AMS. More randomized double-blind placebo-controlled trials are warranted to evaluate and screen effective Chinese patent medicines for AMS prevention.

Salidroside attenuates oxygen and glucose deprivation-induced neuronal injury by inhibiting ferroptosis

Objective: To evaluate the effect of salidroside on oxygen and glucose deprivation(OGD)-treated NT2 cells and its underlying mechanisms of action.Methods: Retinoic acid was used to induce the differentiation of NT2 cells into neurons. The effects of salidroside on survival, apoptosis, inflammatory response, and oxidative stress of neurons undergoing OGD were evaluated. Using precursor cells as controls, the effect of salidroside on the differentiation progression of OGDtreated cells was evaluated. In addition, the effect of erastin, a ferroptosis inducer, on NT2 cells was examined to investigate the underlying mechanisms of neuroprotective action of salidroside.Results: Salidroside alleviated the effects of OGD on neuronal survival, apoptosis, inflammation, and oxidative stress, and promoted NT2 cell differentiation. Moreover, salidroside prevented ferroptosis of OGD-treated cells, which was abolished following erastin treatment, indicating that ferroptosis mediated the regulatory pathway of salidroside.Conclusions: Salidroside attenuates OGD-induced neuronal injury by inhibiting ferroptosis and promotes neuronal differentiation.

红景天对急性呼吸窘迫综合征小鼠肺内皮细胞BMP9表达的影响

目的探讨红景天对肺血管通透性和骨形态发生蛋白9(BMP9)表达的影响。方法将90只C57BL/6小鼠按照随机数字表法分为假手术组、模型组和红景天低、中、高剂量组,每组18只。采用盲肠结扎穿孔法造模,假手术组开腹后关腹,红景天低、中、高剂量组分别用40、80、160 mg/kg红景天灌胃5 d,假手术组和模型组灌胃等量生理盐水。处死后,计算各组小鼠肺湿/干重比值,利用伊文思蓝染色法检测肺内皮细胞的渗透性,对小鼠肺组织进行免疫组化、Western blot法检测BMP9表达水平。使用脂多糖(LPS)诱导人脐静脉内皮细胞(HUVEC)形成内皮细胞炎性损伤模型,用CCK-8法检测细胞活性,筛选出合适的红景天给药浓度。将细胞分为对照组(无LPS诱导)、LPS组和25、50、100μg/mL红景天组,应用实时荧光定量PCR和Western blot检测BMP9表达情况。结果与模型组比较,红景天低、中、高剂量组小鼠肺湿/干重比值[(7.42±0.25)、(6.75±0.25)、(5.93±0.27)比(8.39±0.39),P<0.01]和肺内皮细胞的渗透性[(620.73±0.36)%、(469.26±0.39)%、(179.20±0.36)%比(706.86±0.37)%,P<0.05或P<0.01]均显著降低,且与红景天剂量呈正相关。Western blot和免疫组化检测发现,与假手术组比较,模型组BMP9表达明显减少;而红景天低、中、高剂量组BMP9表达较模型组增加,且与剂量呈正相关。实时荧光定量PCR结果显示,与对照组比较,LPS组HUVEC中BMP9 mRNA相对表达量显著下降[(0.18±0.08)比(1.00±0.11),P<0.01];与LPS组比较,红景天给药组BMP9 mRNA相对表达量随给药浓度增加而增加[(0.39±0.09)、(0.52±0.10)、(0.78±0.09)比(0.18±0.08),P<0.05或P<0.01],但均低于对照组。Western blot检测细胞BMP9蛋白表达发现,LPS诱导细胞炎性反应可以导致BMP9表达明显下降,红景天给药组的BMP9表达量均高于LPS组,且与剂量相关。结论红景天减轻了急性呼吸窘迫综合征小鼠肺损伤并在体外缓解了LPS诱导的内皮损伤,其肺血管保护作用可能与增加BMP9表达有关。

红景天对急性脑出血后神经功能影响及作用机制研究

目的:观察红景天对急性脑出血(acute cerebral hemorrhage,ACH)大鼠神经功能影响并探讨其作用机制。方法:将实验大鼠随机分为假手术组(Sham组)、急性脑出血组(ACH组)和红景天组。分别对各组大鼠进行神经功能Bederson评分及行为学评估,透射电镜(TEM)观察细胞超微结构,ELISA检测白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)和转化生长因子-β(TGF-β)表达,免疫荧光法检测CD16、CD206表达,并对各组谷胱甘肽过氧化物酶(GSH-PX)、丙二醛(MDA)、铁(Fe)含量进行测定。结果:经红景天治疗后ACH大鼠的神经功能缺损评分明显降低,饮水、摄食、活动等行为学评估改善明显,死亡率下降,差异有统计学意义(P<0.05);经TEM观察发现,ACH组血肿周围组织疏松,核膜结构不清晰,细胞器减少,线粒体肿胀,数目减少,并出现空泡样改变。经红景天治疗后,细胞肿胀减轻,结构保持较完整。造模后,ACH组的GSH-PX表达下降,MDA表达升高,Fe含量升高,经红景天治疗后,GSH-PX升高,MDA、Fe含量下降;ELISA结果显示,与Sham组比较,ACH组中IL-1β、TNF-α表达明显升高(P<0.05);与ACH组比较,红景天组显著下调IL-1β、TNF-α表达,上调TGF-β表达(P<0.05);ACH组CD16荧光表达高于红景天组,CD206低于红景天组。结论:红景天对急性脑出血有较好的治疗作用,其机制可能与抑制炎症反应、降低氧化应激、减轻铁死亡及促进小胶质细胞极化有关。

蔷薇红景天总黄酮提取物对Aβ_(25-35)诱导PC12细胞损伤的保护作用及其活性部位筛选

目的考察蔷薇红景天总黄酮提取物(TFE)对β淀粉样蛋白25-35(Aβ_(25-35))诱导的PC12细胞损伤的保护作用及其活性部位筛选。方法采用20μmol·L^(-1)Aβ_(25-35)诱导PC12细胞损伤,经AB-8大孔吸附树脂色谱法分离蔷薇红景天TFE,得水及20%、40%、60%、80%、95%乙醇洗脱物(即TFE-0%、TFE-20%、TFE-40%、TFE-60%、TFE-80%和TFE-95%)。计算不同体积分数乙醇洗脱物浸膏得率(赋予0.3权重),紫外分光光度法检测不同体积分数乙醇洗脱物总黄酮含量(赋予0.7权重),综合评价不同体积分数乙醇洗脱物。MTT法检测不同体积分数乙醇洗脱物对损伤后PC12细胞活力的影响;采用倒置显微镜观察细胞形态;采用2,4-二硝基苯肼显色法检测乳酸脱氢酶(LDH)的活性;采用黄嘌呤氧化酶法检测超氧化物歧化酶(SOD)的含量;酶联免疫测定(ELISA)法分别检测细胞上清中白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、环氧合酶-2(COX-2)和白细胞介素-1β(IL-1β)的分泌水平。结果TFE-40%总黄酮浓度和浸膏得率的综合得分高于其他不同体积分数乙醇洗脱物。与空白组比较,模型组细胞间隙变大,数目减少,出现细胞碎片,突触明显减少,存活率和SOD水平明显降低(P<0.05),LDH水平明显升高(P<0.05);与模型组比较,TFE-40%、TFE-60%洗脱物和盐酸多奈哌齐组细胞形态均有一定程度改善,数目增多,突触增加,细胞形态较完整;TFE-40%、TFE-60%、TFE-80%及TFE-95%组的细胞上清液中IL-6、TNF-α、COX-2和IL-1β的水平均明显降低(P<0.05)。结论蔷薇红景天TFE-40%洗脱物对Aβ_(25-35)诱导的PC12细胞损伤具有较好保护作用,为最佳活性部位,其机制可能与拮抗Aβ_(25-35)的神经毒性和抑制细胞炎症的发生有关。

红景天提取物对3T3-L1脂肪细胞增殖及细胞分化的影响

[目的]应用3T3-L1前脂肪细胞株,分析红景天提取物(Rhodiola rosea L.herb extract,RRLHE)对3T3-L1细胞增殖和分化的作用。[方法]使用油红O染色法对红景天提取物干预分化的细胞进行评估并定量分析脂肪细胞分化程度。通过逆转录多聚酶联反应(RTPCR)来检测脂肪细胞分化相关基因过氧化物体增殖剂活化受体γ(PPARγ)、CAAT/增强子结合蛋白α(C/EBPα)mRNA的表达。[结果]红景天提取物能显著抑制3T3-L1细胞增殖和向成熟脂肪细胞分化,另外,红景天提取物能显著提高3T3-L1前脂肪细胞的葡萄糖摄取和利用率,红景天提取物明显抑制PPARγ、C/EBPαmRNA表达,与对照组比较,差异显著(P<0.01)。[结论]红景天提取物对3T3-L1细胞增殖和分化均有抑制作用,并能提高3T3-L1前脂肪细胞的葡萄糖摄取和利用率,其影响机制与钝化PPARγ、C/EBP-αmRNA的表达有关系。

青藏高原红景天药材的HPLC指纹图谱

利用高效液相色谱法建立了青藏高原红景天的色谱指纹图谱。固定相采用C18反相色谱柱,流动相为甲醇∶0.1%磷酸水(v/v=15∶85);检测波长220nm;流速为1.0mL/min。通过比较发现红景天样品的8个主要共有峰,可作为鉴别红景天药材的主要依据。方法简便快速,为中药品种的鉴定提供了较全面的信息。

HPLC法同时测定3种红景天药材中5种化学成分的含量

目的:建立同时测定大花红景天、狭叶红景天和长鞭红景天药材中没食子酸、红景天苷、酪醇、咖啡酸、对香豆酸含量的方法,并比较3种红景天药材中5种化学成分的含量差异。方法:采用高效液相色谱法测定含量,色谱柱为Wonda Sil C18,流动相为乙腈-0.3%磷酸溶液(梯度洗脱),检测波长为275 nm,柱温为25℃,流速为1.0 m L/min,进样量为10μL;采用Graph Pad Prism 5.0软件对含量测定结果进行单因素方差分析和Tukey’s多重比较。结果:没食子酸、红景天苷、酪醇、咖啡酸、对香豆酸的检测进样量线性范围分别为0.020 48~0.614 4μg(r=0.999 7)、0.118~3.54μg(r=0.999 5)、0.010 84~0.325 2μg(r=0.999 7)、0.008 48~0.254 4μg(r=0.999 5)、0.004 1~0.123μg(r=0.999 5);精密度、稳定性、重复性试验的RSD均小于2%;加样回收率分别为99.62%~104.92%(RSD=1.68%,n=9)、96.55%~100.69%(RSD=1.67%,n=9)、98.91%~103.39%(RSD=1.48%,n=9)、100.93%~104.98%(RSD=1.37%,n=9)、97.71%~103.89%(RSD=1.99%,n=9)。大花红景天中没食子酸、红景天苷、酪醇和咖啡酸含量均显著高于长鞭红景天,大花红景天中的红景天苷、咖啡酸含量均显著高于狭叶红景天,差异均有统计学意义(P<0.05,P<0.01或P<0.001)。结论:该方法简便可行、结果准确,可用于同时测定大花红景天、狭叶红景天和长鞭红景天药材中没食子酸、红景天苷、酪醇、咖啡酸、对香豆酸的含量。3种常见红景天药材中的化学成分含量存在较大差异,大花红景天中红景天苷的含量最高。

红景天属植物DALP反应体系的建立

目的 利用直接扩增片段长度多态(DALP)这一新分子标记技术建立一套稳定的红景天属植物的DALP反应体系。方法 以红景天基因组DNA为模板,对DALP反应程序的一些重要参数进行摸索和优化试验。结果 建立了一套稳定性强、可靠性高的DALP应用反应体系;经过大量重复性实验,反应体系为20μL,Mg2+浓度为2.5 mmol/L,dNTPs浓度为1.25 mmol/L,模板DNA的量为60 ng,5 pmol/L选择性引物1μL,5 pmol/L反向引物3 μL,引物浓度比为1:3,Taq酶2 U。反应过程为:95℃预变性5 min、94℃变性30 s、50℃退火30 s、72℃延伸1 min;30个循环,再72℃延伸10 min,完成整个PCR反应。结论 该体系可有效地应用于红景天属药材的分类鉴定和地道性鉴定。

RP-HPLC法测定不同品种和产地红景天中指标成分的含量(英文)

目的 建立快速、有效的反相高效液相 (RP- HPL C)检测方法 ,测定不同品种和产地红景天中红景天苷、红景天芬、酪醇、红景天素、红景天任的含量 ,以评价红景天的质量。方法 方法 :甲醇 -水 (0 .5 m mol/ L SDS的 1%醋酸水溶液 )检测红景天苷 ;方法 :乙腈 -水检测红景天芬 ;方法 :乙腈 -磷酸水溶液梯度洗脱同时检测 5个有效成分。结果 红景天苷的含量为 0 .0 2 1%～ 1.4 2 0 % ;红景天芬除在蔷薇红景天和高山红景天中含量较高外 ,在其他品种中均非常低或低于检测限 ;5个有效成分的含量因品种或产地的不同而有很大的变化。结论 建立的 3种 RP-HPL C方法可同时测定红景天苷、红景天芬等 5个有效成分。综合考虑不同品种中 5个有效成分的含量 ,以产自新疆的蔷薇红景天和吉林的高山红景天为国内较好的品种。

红景天对大鼠运动性肾缺血再灌注血清和肾组织中IL-1β、TNF-α、IL-6和IL-18水平的影响

目的:探讨红景天对大鼠运动性肾缺血再灌注血清和肾组织中IL-1β、TNF-α、IL-6和IL-18水平的影响。方法:75只7周龄雄性Wistar大鼠随机分为4组:对照组(C组,12只)、一般训练组(M组,12只)、过度训练组(OM组,24只)和红景天+过度训练组(ROM组,24只),M组、OM组和ROM组进行8周56天的游泳训练。采用专业灌胃器每天灌胃1次,ROM组以4.48 g·kg-1红景天灌胃,体积为5mL·kg-1,其他各组灌胃等量生理盐水。末次训练后24 h,采用HE染色观察肾组织形态变化,电镜观察肾组织病理变化,酶联免疫吸附法和免疫组织化学法检测血清和肾组织IL-1β、TNF-α、IL-6、IL-18蛋白表达,RT-PCR法检测肾组织IL-1βmRNA、TNF-αmRNA、IL-6 mRNA、IL-18 mRNA基因表达。结果:1)8周实验后,光镜下C组和M组大鼠肾组织结构正常;OM组肾小球淤血,小管上皮细胞水肿、空泡变性、管腔扩张,管腔有少量脱落绒毛、上皮细胞及各种管型;ROM组肾组织病理学改变较OM组轻,小管上皮细胞有轻微的水肿、空泡变性和管腔扩张,无蛋白管型和细胞管型。OM组和ROM组Paller评分显著高于C组(P<0.01),ROM组显著低于OM组(P<0.05)。电镜下C组结构正常;M组基底膜偶见轻微增厚,系膜区不扩大,系膜细胞不增多,滤过膜结构正常,上皮足突无融合;OM组部分基底膜呈不规则节段性增厚,系膜基质明显增多,系膜细胞增生,上皮细胞足突广泛融合;ROM组仍有较轻系膜区扩大和基底膜呈不规则节段性增厚,上皮细胞足突融合不明显,病变程度明显减轻。2)OM组和ROM组血尿素氮和血清肌酐显著高于C组(P<0.01),ROM组显著低于OM组(P<0.05);OM组和ROM组血清和肾组织IL-1β、TNF-α、IL-6和IL-18蛋白表达显著高于C组(P<0.01),ROM组显著低于OM组(P<0.05);OM组和ROM组肾组织IL-1βmRNA、TNF-αmRNA、IL-6 mRNA和IL-18 mRNA表达上调显著高于C组(P<0.01),ROM组显著低于OM组(P<0.05)。结论:8周过度训练导致大鼠运动性肾缺血再灌注,肾组织超微结构严重破坏,组织病理学明显改变。红景天明显减轻肾脏组织超微结构破坏程度及组织病理学改变,其可能通过抑制炎性细胞因子IL-1β、TNF-α、IL-6和IL-18表达,提高机体免疫,耐受各种应激刺激能力,对过度训练导致的运动性肾缺血再灌注损伤有保护作用。

基于网络药理学和分子对接技术探究丹参-红景天抗心肌缺血的作用机制

目的基于网络药理学和分子对接技术研究丹参-红景天药对治疗心肌缺血(MI,myocardial ischemia)的潜在机制。方法初步基于中药系统药理分析平台TCMSP和文献筛选丹参和红景天活性成分,自GeneCards及其他数据库可以确定MI的靶点。之后,选择活性成分相应靶点以及疾病靶点之间的交集位置。另外,引入STRING数据库分析各个靶点彼此之间的影响,使用R软件中的Cluster Profiler包分析生物功能和信号通路富集。基于Cytoscape应用建立起蛋白质-蛋白质关联性以及组分靶链路体系,确定主要的活性物质以及靶点。Vina软件用于将核心靶蛋白与药物活性成分对接。结果筛选共得到342个药物潜在靶点,2241个MI潜在靶点,201个共有靶点;GO富集分析得到3276条(P<0.05);KEGG富集分析得到188个(P<0.05);分子对接结果表明靶蛋白与药物活性成分结合较密切。结论丹参-红景天药对可能作用于STAT3、JUN、AKT1和MAPK3等调节炎症、细胞凋亡和增殖做为治疗MI的分子机制,反映出中药对MI治疗通过多靶点和多途径的特点,为进一步揭示其药理基础提供新思路。