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1.
目的 探讨罗布麻叶中黄酮类成分的分布特点与动态积累规律.方法 采用高效液相色谱法(HPLC)同时测定不同生长部位和生长期罗布麻叶中5种黄酮类成分.结果 紫云英苷含量呈现出上部叶>中部叶>下部叶的规律;金丝桃苷、异槲皮苷的含量以6、7月份较高.结论 为罗布麻叶的生态分析、合理采收以及资源开发利用提供有价值的资料.  相似文献   

2.
目的以芦丁、金丝桃苷、槲皮苷为指标成分,建立了RP-HPLC法对鱼腥草中黄酮类成分进行定量测定,并考察鱼腥草不同生长季节、不同药用部位黄酮类成分的量。方法利用高效液相色谱法梯度洗脱。色谱条件:AgilentZORBAXSB—C18分析柱(250mm×4.6mm,5μm),柱温25℃,流动相为乙腈-0.4%磷酸溶液梯度洗脱,体积流量1.0mL/min,检测波长256nm。结果芦丁、金丝桃苷、槲皮苷质量浓度与峰面积呈良好线性关系,线性范围分别是:芦丁0.0334~0.5344μg,r=1(n=6);金丝桃苷0.1660~2.6560μg,r=1(n=6);槲皮苷0.3805~6.0880μg,r=1(n=6);回收率芦丁为103.3%,金丝桃苷为106.6%,槲皮苷为107.6%(n=9)。结论本方法分离度好,稳定,适合于作为鱼腥草的质量控制方法。黄酮类成分的量高低是:花>叶>果实>地上茎,地下部分基本无黄酮类成分。花期各成分的量相对高于果实期。  相似文献   

3.
贯叶金丝桃的黄酮类成分研究   总被引:7,自引:0,他引:7  
[目的]研究贯叶金丝桃的黄酮类化学成分.[方法]采用色谱技术对贯叶金丝桃的化学成分进行分离和纯化,根据波谱数据和理化性质进行结构鉴定.[结果]从贯叶金丝桃中分离得到5个化合物,分别鉴定为槲皮素、萹蓄苷、槲皮苷、异槲皮苷及金丝桃苷.[结论]首次从贯叶金丝桃中分离得到化合物异槲皮苷.  相似文献   

4.
目的 :建立同时测定鬼针草中三种黄酮类成分含量的方法 ,并比较鬼针草茎和叶中三种成分的含量。方法 :采用HPLC法对鬼针草中三种黄酮类成分芦丁、异奥卡宁7-0-β-D-葡糖苷和异槲皮苷的含量测定方法学进行考察,并同时分析三种黄酮类成分在鬼针草茎和叶总黄酮中的含量。结果:芦丁在0.010~1.040 mg/m L(r=0.999 9)、异奥卡宁7-0-β-D-葡糖苷在0.012~1.168 mg/m L(r=0.999 5)、异槲皮苷在0.012~1.230 mg/m L线性关系良好;平均回收率(n=6)分别为98.51%、99.21%、98.73%、97.33%、98.92%、98.77%。采用此方法同时测定鬼针草茎和叶中芦丁、异奥卡宁7-0-β-D-葡糖苷、异槲皮苷三种黄酮的含量。结论:建立的HPLC法同时测定鬼针草中三种黄酮类成分含量的方法良好,可用于鬼针草不同部位中黄酮的含量测定。  相似文献   

5.
[目的] 测定桑叶7种黄酮类成分含量与其α-糖苷酶抑制活性,考察黄酮类成分与降糖活性关系,阐明桑叶"经霜为上"的科学内涵。[方法] 基于正交实验对桑叶提取方法进行优化,采用高效液相色谱(HPLC)法对不同采收期及不同产地桑叶7种黄酮类成分进行含量测定;采用酶标法对桑叶样品α-糖苷酶抑制活性进行测定。[结果] 桑叶最佳的提取条件为80%甲醇、超声30 min、料液比1:20;建立了桑皮苷A、隐绿原酸、芦丁、异槲皮苷、紫云英苷、槲皮素和山奈酚7种黄酮类成分同时测定HPLC方法。[结论] 建立了同时测定桑叶中7种黄酮类成分的HPLC方法,且本方法精密度、重复性、稳定性、加样回收率良好;发现不同产地桑叶7种黄酮类成分总含量与其α-糖苷酶抑制活性呈正相关关系,本研究为桑叶"经霜为上"的科学内涵阐明,桑叶的临床应用、质量控制及桑叶资源的二次开发提供参考。  相似文献   

6.
 【目的】研究田基黄中槲皮苷(Quercetin-3-β-D-rhamnose)、异槲皮苷(Quercetin-3-β-D-glucoside)、田基黄苷(Quercetin-7-β-D-rhamnose)3个黄酮类化合物的保肝退黄作用。【方法】选用四氯化碳(CCl4)和D-氨基半乳糖胺(D-Gal)致大鼠急性肝损伤模型,观察3个黄酮类化合物对血清丙氨酸转氨酶(ALT)、门冬氨酸转氨酶(AST)的影响;用α-萘异硫氰酸酯(ANIT)致小鼠黄疸性肝损伤模型,观察3个黄酮类化合物对血清总胆红素(T.BIL)的影响。【结果】异槲皮苷、槲皮苷、田基黄苷均能显著抑制CCl4和D-Gal所致的大鼠血清ALT和AST升高,对ANIT所致的小鼠血清总胆红素升高有明显的降低作用。【结论】田基黄中3个黄酮类化合物异槲皮苷、槲皮苷、田基黄苷均有保肝退黄作用。  相似文献   

7.
目的 测定4个不同产地砂仁中槲皮苷和异槲皮苷的含量。方法 采用高效液相色谱(HPLC)法对砂仁中槲皮苷和异槲皮苷含量进行测定,色谱柱为C18柱(250.0 mm×4.6 mm,5μm),流动相为甲醇∶0.1%磷酸(40∶60),等度洗脱,流速1.0 m L/min,检测波长350 nm,柱温30℃,进样量10μL。结果 槲皮苷回归方程为Y=5.7243X-0.0158,r=0.9993,线性范围为0.0503~0.1410μg,平均回收率为99.63%,RSD为0.63%;异槲皮苷回归方程为Y=5.8766X-0.0469,r=0.9996,线性范围为0.0187~0.1261μg,平均回收率为99.44%,RSD为0.85%。4个不同产地砂仁中槲皮苷和异槲皮苷平均含量高低顺序为:广东阳江阳春市福建漳州长泰县广西宗左宁明县云南西双版纳州。结论 不同产地砂仁药材中槲皮苷和异槲皮苷含量存在一定差异,2种成分的平均含量均以广东阳江阳春市最高,符合砂仁药材的道地性。  相似文献   

8.
高效液相色谱法同时测定银杏叶提取物中5种黄酮类成分   总被引:1,自引:0,他引:1  
目的 建立反相高效液相色谱法同时测定银杏叶提取物中5种黄酮类成分芦丁、槲皮苷、槲皮素、山奈酚、异鼠李素的含量.方法 采用70%甲醇提取样品,以Kromasil C18为固定相,甲醇-0.1%甲酸水溶液为流动相,线性梯度洗脱,流速1.0 ml/min;柱温:40℃;检测波长:360 nm;结果芦丁、槲皮苷、槲皮素、山奈酚、异鼠李素的定量限分别为0.03、0.02、0.008、0.006、0.005 mg/L,芦丁、槲皮苷、槲皮素、山奈酚、异鼠李素分别在2.02~50.5、1.932~48.3、2.01~50.4、0.49~12.3、0.39~9.8 mg/L浓度范围内其峰面积与浓度的线性关系良好(r>0.9992),回收率为86.5% ~99.2%,日内精密度及日间精密度的变异系数分别小于2%、3%.结论 本方法简单、准确,为银杏叶提取物中黄酮类成分的质量控制提供了依据.  相似文献   

9.
目的 研究三白草中主要化学成分对H2O2损伤人正常肝细胞LO2的保护作用.方法 供试品为三白草中木脂素类成分:Rel-(7S,8R,7'R,8'R)- 3,3',4,4’,5,5'-hexamethoxy-7-O-7’,8,8’-llignan、Di-O-methyltetra hydrofuriguaiacin B、里卡灵A、里卡灵B、三白草素、二氢愈创木酸;黄酮类成分:异槲皮苷、槲皮苷.LO2细胞接种于96孔板培养,加入100 μmol/L的受试成分,培养24 h后加入20 μL 1.2 mmol/L H2 O2作用1h.使用MTT法检测各组细胞存活率.结果 异槲皮苷和槲皮苷对H2O2损伤LO2细胞有显著保护作用,里卡灵A和二氢愈创木酸对细胞有显著损伤作用.结论 该实验可以为三白草保肝作用的研究提供理论基础.  相似文献   

10.
【目的】研究田基黄中槲皮苷(Quercetin-3-β—D—rhamnose)、异槲皮苷(Quercetin-3-β—D—glucoside)、田基黄苷(Quercetin-7-β—D—rhamnose)3个黄酮类化合物的保肝退黄作用。【方法】选用四氯化碳( CCl4)和D-氨基半乳糖胺(D—Gal)致大鼠急性肝损伤模型,观察3个黄酮类化合物对血清丙氨酸转氨酶(ALT)、门冬氨酸转氨酶(AST)的影响;用α-萘异硫氰酸酯(ANIT)致小鼠黄疸性肝损伤模型,观察3个黄酮类化合物对血清总胆红素(T.BIL)的影响。【结果】异槲皮苷、槲皮苷、田基黄苷均能显著抑制CCl4和D—Gal所致的大鼠血清ALT和AST升高,对ANIT所致的小鼠血清总胆红素升高有明显的降低作用。【结论】田基黄中3个黄酮类化合物异槲皮苷、槲皮苷、田基黄苷均有保肝退黄作用。  相似文献   

11.
CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.  相似文献   

12.
Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.  相似文献   

13.
OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.  相似文献   

14.
15.
Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P<0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.  相似文献   

16.
Objective:To investigate the optimum screening conditions of associated proteins in human psoriasis vulgaris by serum proteomics technique, and to screen the different expression proteins related with psoriasis vulgaris. Methods:Serum samples of peripheral blood were collected from newly diagnosed psoriasis vulgaris patients in the clinic, and 20 matched healthy persons. Serum albumin IgG was removed by filtering with ProteoExtract Albumin/IgG. After comparative proteomics analysis the different protein spots were identified using 2-DE and MS. Results :Electrophoresis figures with high resolution and reproducibility were obtained. Three different expression proteins were found only in the serum from psoriasis vulgaris patients, while nine other different proteins expressing from healthy volunteers. Conclusion:The protein expression was different in the serum between the psoriasis vulgaris patients and healthy volunteers. It was hoped that we could find the biomarkers related to psoriasis vulgaris by using proteomics.  相似文献   

17.
PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are  相似文献   

18.
CASE HISTORY A male,a retired officer of 61 years old,paid his first visit on May 12,2006.The patient stated that 2 weeks before he suddenly got paroxysmal precordial choking pain,with irregular attacks.Each attack would last several seconds to several minutes.The attack was accompanied with heavy oppressed sensation in the precordial region,palpitation,lassitude,and in severe cases,sweating,which was once diagnosed by a hospital as'coronary heart disease'.Recalling the case history,the patient said that several days before he got angry with others because of some affairs in work,and he was not so used to the life pattern since he had just retired from his busy working post.At usual times,he was quick tempered and peevish.In recent days,he had poor appetite,and loose stool.  相似文献   

19.
The English edition of Chinese Journal of Integrative Medicine is edited and published by the Chinese Journal of Integrated Traditional and Western Medicine Press.Original scientific papers of advanced clinical and experimental medicine in the field of complementary/alternative medicine or integrative medicine are expected.  相似文献   

20.
<正>As culture is the soul of a nation,the three books,"History of Chinese Philosophy,""History of Chinese Culture"and"History of Chinese Science and Technology"have demonstrated the superiority of our great Chinese culture,and its significant impact in the field of international culture.Both core value and practical value of the Chinese culture are very clear,reflected in the views of universe,nature,life,health,disease,and therapy and related considerations,concepts,and technical methods.  相似文献   

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