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1.
香加皮不同提取部位体外抗肿瘤活性实验研究   总被引:4,自引:0,他引:4  
[目的]筛选香加皮的抗肿瘤活性部位.[方法]用大孔吸附树脂柱层析法对香加皮的和60%乙醇回流提取物进行分段处理,利用四甲基偶氮唑盐(MTT)法测定各提取部位体外抗肿瘤活性.[结果]70%乙醇洗脱部位对体外肿瘤细胞表现出抑制活性,并在测定浓度范围内呈现出良好剂量依赖性.95%乙醇洗脱部位的抑制作用较弱.而水洗脱物和20%乙醇洗脱物则未呈现出抗肿瘤活性.在各提取部位中70%乙醇提取物活性最强.[结论]70%乙醇提取部位是香加皮主要的体外抗肿瘤活性部位.  相似文献   

2.
瑞香狼毒系统溶剂法分离提取部位的体外抗肿瘤活性   总被引:10,自引:3,他引:10  
王彬  王锐  贾正平  樊俊杰  马骏  张汝学 《中药材》2004,27(5):355-357
目的:分离筛选瑞香狼毒中抗肿瘤活性部位.方法:用系统溶剂法对瑞香狼毒95%乙醇提取物进行分离,MTT比色法对分离得到的部位进行体外抗肿瘤活性的测定.结果:石油醚提取物和氯仿提取物对体外培养肿瘤细胞表现出较强的抑制作用,在测定浓度范围内呈现出良好剂量依赖性抑制作用,而正丁醇和甲醇提取部位在测定浓度范围内则显示出很弱的抑制作用;在各提取部位中石油醚提取物的体外抗肿瘤作用最强.结论:石油醚提取部位是瑞香狼毒中的体外抗肿瘤活性部位.  相似文献   

3.
了哥王抗肿瘤活性部位筛选   总被引:7,自引:0,他引:7  
目的:研究了哥王95%、75%、50%乙醇提取物、水提物及95%乙醇提取物的石油醚、氯仿、乙酸乙酯、正丁醇萃取部位对肿瘤细胞的增殖抑制作用,确定了哥王抗肿瘤活性部位。方法:采用四甲基偶氮唑盐(MTT)比色法考察了哥王不同提取物及95%乙醇提取物的不同溶剂萃取部位对Hela、SGC-7901、Bel-7402细胞的抗肿瘤活性。结果:了哥王95%乙醇提物对Hela、SGC-7901细胞有良好的抗肿瘤活性,其石油醚、氯仿、乙酸乙酯萃取部位对Hela、SGC-7901细胞均有不同程度的抗肿瘤活性。结论:石油醚、氯仿、乙酸乙酯萃取部位有较强的抗肿瘤活性,初步确定为了哥王抗肿瘤活性部位。  相似文献   

4.
驱虫斑鸠菊抗肿瘤活性部位的初步研究   总被引:2,自引:0,他引:2       下载免费PDF全文
目的:对维吾尔族民间药材驱虫斑鸠菊Vernonia anthelmintica willd.果实抗肿瘤活性部位进行初步研究。方法:运用体外抗肿瘤生物活性跟踪的方法,采用人胃癌细胞(BGC-823)、人肝癌细胞(HepG-2)和黑色素瘤细胞株(B16、A375)对驱虫斑鸠菊氯仿、丙酮、乙醇、水提取部位进行体外抗肿瘤活性筛选,并利用高速逆流色谱和Sephadex LH-20柱层析对活性部位进行初步分离,通过HPLC对不同提取部位进行分析。结果:经体外活性筛选显示氯仿、丙酮、乙醇提取部位对肿瘤细胞增殖均具有一定的抑制作用;得到一个单体化合物,经结构分析为紫铆查尔酮;同时,通过对HPLC的色谱图分析显示各提取部位的色谱图具有一定的相似性。结论:本研究可能对天然植物有效部位或有效成分的研究提供了一种新的思路。  相似文献   

5.
将美洲商陆Phytolacca americana L.根粉末用甲醇室温提取7天,提取物悬浮于水,依次用正己烷、氯仿、乙酸乙酯和正丁醇分配提取。氯仿部位对高浓度葡萄糖诱导的肾小球膜细胞增殖显示强抑制作用。该部位经硅胶柱分离,依次用正己烷、正己烷-乙酸乙酯和甲醇洗脱,得6个部位。活性部位经制备HPLC分离得α-菠菜甾醇。  相似文献   

6.
目的确定广西特产药材青天葵体外抗肿瘤作用的活性部位。方法青天葵部位提取物的制备主要采用溶剂法,青天葵全草先用95%的乙醇提取,得到的提取物进一步用石油醚、醋酸乙酯、正丁醇、甲醇依次提取,得到极性由小到大的4个提取部位。活性筛选采用MTT法实验,观察青天葵提取物对7种肿瘤细胞的生长抑制作用。结果青天葵石油醚和醋酸乙酯部位具有一定的体外抗肿瘤作用。结论首次确定了青天葵的石油醚和醋酸乙酯部分是体外抗肿瘤作用的有效部位。  相似文献   

7.
目的比较桦褐孔菌不同极性有机试剂提取物的抗肿瘤活性,从中筛选出抗肿瘤的主要活性部位。方法采用系统溶剂法对桦褐孔菌依次进行梯度提取,分别得到石油醚层、氯仿层、乙酸乙酯层、正丁醇层、70%乙醇层、水层和粗多糖等7个不同极性部位,以MTT法考察桦褐孔菌各极性部位对肝癌细胞、肺癌细胞及乳腺癌细胞的抑制作用。结果 7种桦褐孔菌提取物均能浓度依赖性的抑制癌细胞生长,且氯仿层对癌细胞的抑制率最高。结论氯仿层是桦褐孔菌的主要抗肿瘤活性部位,具有较高的抗肿瘤活性。  相似文献   

8.
王秋红  曹琦  李斌  辛萍  王知斌  杨欣  匡海学 《中草药》2015,46(13):1950-1953
目的考察不同发酵时间对西瓜霜抗菌活性的影响,并对最佳发酵时间制得的西瓜霜进行有效部位筛选。方法选择常见致病菌(多为口腔、上呼吸道致病菌),采用体外试管法抑菌实验和平板法杀菌实验,对发酵7、15、22、30、50 d的西瓜霜进行抗菌活性比较;以甲醇提取发酵15 d的西瓜霜制得西瓜霜甲醇提取物,进一步以AB-8大孔吸附树脂对西瓜霜甲醇提取物进行分离,得到甲醇提取物的水洗脱部位和95%乙醇洗脱部位,比较西瓜霜甲醇提取物与其水洗脱部位和95%乙醇洗脱部位的抗菌活性,筛选有效部位。结果发酵15 d制备的西瓜霜抗菌活性最强;西瓜霜甲醇提取物的大孔吸附树脂95%乙醇洗脱部位对福氏痢疾杆菌、金黄色葡萄球菌、白葡萄球菌、柠檬葡萄球菌、绿脓杆菌、乙型溶血性链球菌、乙型副伤寒杆菌和大肠杆菌具有明显抗菌作用。结论发酵时间对西瓜霜的抗菌活性具有显著影响,西瓜霜抗菌作用的有效部位为其甲醇提取物的大孔吸附树脂95%乙醇洗脱部位。  相似文献   

9.
目的筛选金银花体外抑制乙酰胆碱酯酶的活性部位,并对其化学成分进行分析。方法金银花提取物经反相C_(18)填料进行固相萃取(SPE)制备不同浓度甲醇梯度洗脱部位,以体外抑制乙酰胆碱酯酶能力评价其抗阿尔兹海默症作用,采用高效液相色谱-质谱联用技术对金银花化学成分进行分析。结果金银花提取物的30%甲醇洗脱部位的乙酰胆碱酯酶酶抑制活性明显强于其他洗脱部位,并存在明显的量效关系,为其体外抑制乙酰胆碱酯酶的活性部位,经液质联用分析共鉴定出14种化合物成分。结论金银花具有体外抑制乙酰胆碱酯酶活性,其主要有效部位为30%甲醇洗脱部位,具有一定的抗阿尔兹海默症的作用。  相似文献   

10.
目的:筛选出毛头牛蒡子中抗氧化和降血糖的有效部位。方法:将毛头牛蒡子粗多糖提取物经AB-8大孔树脂脱色纯化,依次采用水和20%、40%、60%乙醇水进行洗脱,以DPPH自由基清除活性、还原力的测定、羟基自由基清除活性和超氧阴离子清除活性4项指标研究不同洗脱部位的抗氧化活性,采用体外α-葡萄糖苷酶活性测定毛头牛蒡子提取物不同部位的降血糖活性。结果:毛头牛蒡子20%乙醇水洗脱部位的抗氧化活性和降血糖活性均强于其他部位。结论:毛头牛蒡子抗氧化和降血糖的活性部位应为20%乙醇水洗脱部位。  相似文献   

11.
灵芝抗癌活性及放化疗对HL-7702细胞的保护作用   总被引:1,自引:0,他引:1  
王丹花  翁新楚 《中国中药杂志》2006,31(19):1618-1622
目的:研究灵芝精粉(灵芝醇提物+水提物)、灵芝精粉氯仿提取物、氯仿提取后的醋酸乙酯提取物、2次提取后的剩余物对肝癌BEL-7402和胃癌MGC-803细胞的抑制效果及其对HL-7702细胞顺铂损伤、60Coγ射线辐射损伤的修复与保护作用。方法: 采用MTT法检测灵芝抗癌活性及放化疗时对HL-7702细胞保护作用。结果: 灵芝氯仿提取物的抗癌活性为最强:在0.125 mg·mL-1时,对癌细胞的抑制率已超过50%。对已受顺铂损伤的HL-7702细胞,4种提取物未能显示出修复作用,但氯仿提取物预处理可显著降低其损伤程度。对受辐射的HL-7702细胞,仅氯仿提取物对中、高剂量照射下的辐射损伤体现一定的修复作用;但4种提取物预处理均可降低其辐射损伤的程度。结论: 灵芝氯仿提取物对癌细胞的抑制作用,对正常细胞放化疗损伤的保护作用,均体现了显著的效果。  相似文献   

12.
树舌灵芝粗提物体外抗肿瘤作用的研究   总被引:3,自引:0,他引:3  
目的探讨树舌灵芝各溶剂提取物的抗癌作用。方法采用系统溶剂法从树舌灵芝得到一系列提取物,运用MTT法研究了各提取物对体外培养的人乳癌MCF-7细胞增殖的影响。结果氯仿提取物对肿瘤细胞的增殖有明显的抑制作用,其余各层样品抑制作用不明显。结论树舌灵芝抗肿瘤成分可能在氯仿部分。  相似文献   

13.

Aim of the study

Evaluate the potential inhibition of cough in a mouse model induced by sulfur dioxide gas of methanol and chloroform extracts of aerial parts of Chamaedorea tepejilote.

Material and methods

The antitussive effect was examined using the Ogyhara method. The extracts and theobromine were orally administered to mice. Each extract was administered to one group (400 mg/Kg) and theobromine (2 mg), and negative control received PVP. The frequency of cough was measured at 60, 90 min after the administration of chloroform extract.

Results

The water extract of C. tepejilote had no effect on the pharmacological model used in this study. The effects of the methanol and chloroform extracts of this plant on sulfur-dioxide-induced cough in experimental animals show activity dose-dependently in the range between 100 to 500 mg/Kg. At doses of 400 mg/kg, the methanol and chloroform extracts inhibited cough by 41.72% and 49.1%, respectively; these results are comparable to the effect produced by the antitussive agent theobromine (53.4% inhibition).

Conclusions

Both extracts exhibited significant antitussive activity, and the effect of the chloroform extract was dose dependent. The antitussive activity of this extract was comparable to that of theobromine. The effect of chloroform extract on the trachea was also tested; it did not relax pre-contractions in guinea pig trachealis induced KCl, carbachol or histamine.  相似文献   

14.
AIM OF THE STUDY: Bidens pilosa (L.) (Asteraceae) is a medicinal plant traditionally used in Brazil for treating conditions that can be related to cancer. Therefore the present study was carried out to evaluate the antitumor activity of extracts obtained from the aerial parts of this plant species. MATERIALS AND METHODS: The crude hydroalcoholic extract (HAE) (water:alcohol, 6:4) and solvent fractions (chloroform=CHCl3,ethyl acetate=EtOAc, methanol=MeOH) were assessed for cytotoxicity assay by the brine shrimp and hemolytic, MTT and NRU assays. The antiproliferative potential of the crude extract and fractions was investigated in vivo using the Ehrlich ascites carcinoma (EAC) in isogenic Balb/c mice that were administered intraperitoneally 150 and 300 mg/kg body weight per day for nine days beginning 24 h after tumor inoculation. RESULTS: In in vitro cytotoxicity using Ehrlich ascites carcinoma cell line assay CHCl3 extract proved to be more toxic than the crude HAE with an IC(50) of 97+/-7.2 and 83+/-5.2 microg/mL to NRU and MTT, respectively. Histomorphological evaluations indicated that the treatment with CHCl3 and HAE extracts significantly reduced (P<0.05) body weight, abdominal circumference, tumor volume, packed cell volume and viable cell count, when compared to EAC control group. Furthermore, nonviable tumor cell count increased significantly (P<0.01) only under treatment with CHCl3 or HAE, and this was accompanied by a marked percentage increase in life span (54.2 and 41.7%, respectively). Biochemical assays revealed that CHCl3 and HAE extracts were also able to decrease serum LDH activity (39.5 and 30.6%) and GSH concentration (94.6 and 50.7%) in ascitic fluid, respectively. CONCLUSION: The chloroform fraction showed the best and methanolic the worst antitumor activity.  相似文献   

15.
Nematicidal activity of Trigonella foenum-graecum L   总被引:1,自引:0,他引:1  
The aqueous, methanol and chloroform extracts of Trigonella foenum-graecum caused significant (p < 0.05) mortality of Meloidogyne javanica larvae. The methanol soluble fraction eluted from pure distilled water showed the highest (>92%) nematicidal activity compared with the fractions eluted from pure methanol and different ratios of chloroform and methanol indicate that the nematicidal compound was polar in nature.  相似文献   

16.
This study was conducted to search for xanthine oxidase (XO) inhibitors from the root extracts of Tamus communis L. traditionally used in folk medicine in Algeria. Root extracts with different solvents were screened for purified milk xanthine oxidase inhibition. The root extracts (methanol, chloroform and ethyl acetate) and proteins, obtained in distilled water, inhibited bovine, sheep and human milk XO from three species in a concentration-dependent manner, with an additional superoxide scavenging capacity, which reached its highest level with ethyl acetate extract (IC(50) = 0.15, 0.04 and 0.09 g/L) for bovine XO, sheep XO and human XO, respectively. The antioxidant potential was confirmed with the non-enzymatic method, total radical-trapping antioxidant parameter (TRAP) assay, which showed that the Tamus communis L. extracts have a potential antioxidant activity in the same order obtained by using the reduction of cytochrome c, an enzymatic method, in which the antioxidant activity followed a decreasing order: ethyl acetate extract > chloroform extract > protein.  相似文献   

17.
Caesalpinia sappan L. (C. sappan) has been used in Oriental medicine as an antitumor agent. The present study shows the effects of the chloroform extract of C. sappan on cell death in head and neck cancer cell lines. The viability of HNSCC4 and HNSCC31 cells (head and neck cancer cell lines) was noticeably decreased compared to that of HaCaT cells (control group) in the presence of chloroform extract. No significant difference was observed in the viability of HNSCC4 and HNSCC31 cells when compared with HaCaT cells in the presence of n-butanol, methanol, and water extracts. Exposure to the chloroform extract of C. sappan resulted in an increase in the Sub-G1 phase of the cell cycle and condensation and shrinkage of nuclei in the HNSCC4 and HNSCC31 cells. The levels of p53 and p21WAF1/CIP1 were also increased in the HNSCC4 and HNSCC31 cells. The results suggest that the chloroform extract of C. sappan may increase cell death in the HNSCC4 and HNSCC31 cells, which is linked to increased cellular levels of p53 and p21WAF1/CIP1.  相似文献   

18.
The present study aims to determine the in vitro antiproliferative and antioxidant activities of various extracts from the leaves of Melastoma malabathricum using various established in vitro assays. The aqueous extract inhibited the proliferation of Caov-3 and HL-60 cell lines, while the chloroform extract exhibited antiproliferative activity against the Caov-3, HL-60, and CEM-SS cell lines. The methanol extract demonstrated antiproliferative activity against more cell lines, including the MCF-7, HeLa, Caov-3, HL-60, CEM-SS, and MDA-MB-231 cancer cell lines. Interestingly, all extracts did not inhibit the proliferation of 3T3 cells, thus indicating their noncytotoxic properties. Unlike the chloroform extracts, the aqueous and methanol extracts of M malabathricum (20, 100, and 500 μg/ml) produced high antioxidant activity for the superoxide scavenging assay with only the 500 μg/ml aqueous and methanol extracts exhibited high activity for the 2,2-diphenyl -1-picrylhydrazyl radical scavenging assay. The total phenolic content recorded for the aqueous, methanol, and chloroform extracts were 3344.2 ± 19.1, 3055.1 ± 8.7, and 92.5 ± 7.3 mg/100 g of gallic acid, respectively. The M malabathricum leaves possessed potential antiproliferative and antioxidant activities that could be attributed to its high content of phenolic compounds.  相似文献   

19.
红缘拟层孔菌子实体中抗肿瘤活性成分研究   总被引:2,自引:0,他引:2  
目的对红缘拟层孔菌Fomitopsis pinicola子实体的石油醚提取物、氯仿提取物、水层提取物和氯仿提取物中获得的化合物A(3-乙酰氧基-8,24-羊毛甾二烯-21-酸)进行了体内外抗肿瘤活性和细胞凋亡实验研究。方法通过测定脾脏指数、胸腺指数以及血清中白介素-2(IL-2)的含量,检测了各提取物对荷瘤小鼠免疫功能的影响。结果氯仿提取物和化合物A对H22荷瘤小鼠具有较高的抑瘤率,当氯仿提取物剂量为200 mg.kg-1.d-1时,抑瘤率为52.97%,胸腺指数明显高于对照组和环磷酰胺(CTX)组(P<0.05),而接近于正常组(P>0.05);脾脏指数接近于对照组和CTX组而明显高于正常组(P<0.01);IL-2的含量明显升高;化合物A具有较好的抗肿瘤作用,各剂量组之间存在良好的剂量关系;且同对照组相比存在显著性差异(P<0.01);在剂量为10mg.kg-1.d-1时,抑瘤率最高可达到52.31%。体外实验研究结果表明化合物A对人肝癌细胞SMMC-7721和人乳腺癌细胞MCF-7均具有良好的抑制作用,其抑制率最大分别为77.63%和90.29%,IC50分别为213.80μg/ml和123.03μg/ml。化合物A作用后的细胞凋亡率仅为23.2%,接近阴性对照组的20.9%,促进细胞凋亡效果不明显。结论结合体内外实验可推断化合物A(3-乙酰氧基-8,24-羊毛甾二烯-21-酸)为红缘拟层孔菌抗肿瘤活性成分之一,提高机体免疫活性可能是其抗肿瘤作用的机理之一。  相似文献   

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