不同季节元宝枫叶对FAS活性的抑制及其与总黄酮含量的相关性

目的研究不同季节元宝枫叶提取物对动物脂肪酸合成酶(FAS)抑制能力的差异及其与叶中总黄酮含量的关系,为开发元宝枫叶提供实验依据。方法用分光光度法对不同季节的元宝枫叶对FAS的抑制能力及总黄酮的含量进行分析测定。结果不同季节的元宝枫叶对FAS的抑制能力的差异有统计学意义,其中落叶的应用价值最高,对FAS的抑制作用与总黄酮含量可能存在正相关性。结论每年11月的元宝枫叶对FAS的抑制最为显著,FAS可能是抗癌作用的潜在靶点。     

红腺忍冬叶中总黄酮的研究

目的 对红腺忍冬叶进行黄酮类等成分的定性定量分析,并确定回流提取红腺忍冬叶总黄酮的最佳工艺条件.方法 采用预试验进行定性分析;用分光光度法测定总黄酮含量;采用正交试验法等,考察乙醇回流提取不同因素对提取率的影响.结果 红腺忍冬叶中含有生物碱和黄酮类化合物;乙醇回流提取红腺忍冬叶总黄酮的最佳条件为12倍量50%乙醇回流提取2次,每次1h,验证试验测得红腺忍冬叶中总黄酮平均含量为16.6%,RSD=1.52%(n=3).结论 红腺忍冬叶中总黄酮含量较高,红腺忍冬叶和金银花叶在化学方面存在一定的相似性.     

大孔吸附树脂分离纯化元宝枫叶总多酚

目的研究大孔树脂分离纯化元宝枫叶总多酚的工艺条件。方法以元宝枫叶总多酚的静态与动态吸附量和解吸率为指标筛选大孔树脂,采用紫外分光光度法测定元宝枫叶总多酚含量,对所筛选树脂分离元宝枫叶总多酚工艺进行评价。结果H PD100型大孔树脂分离效果较好,其最佳分离条件是以浓度为5 g/L元宝枫叶提取物为供试液,上样和洗脱流速为2 mL/min,解吸液浓度为70%乙醇,解吸液体积为4BV。结论HPD100型大孔树脂在所确定的工艺条件下,树脂的吸附-解吸附性能稳定,且能较好地分离纯化元宝枫叶总多酚,多酚含量纯化前为28.55%,纯化后为39.52%。     

黄酮类化合物抗白血病作用的研究进展

黄酮类化合物(flavonoids)又名生物类黄酮(bioflavonoids),可分为黄酮、黄酮醇、异黄酮、黄烷酮等及其甙类,其结构特点是具有C6-C3-C6的基本骨架,即两个芳香环由一个成环或不成环的C3单元联结起来.它们广泛存在于植物的各个部位,尤其是花、叶部位,主要存在于芸香科、唇形科、豆科、伞形科、银杏科与菊科中.黄酮类化合物如此广泛分布于植物界中,而且具有多种多样的生物学活性[1-4].近年来,许多黄酮类化合物被证实对多种肿瘤细胞尤其对白血病细胞有一定的细胞毒性及抗肿瘤活性,能够抑制白血病细胞的增殖、影响其细胞周期的分布或诱导白血病细胞的凋亡[5-7],而对正常人体细胞低毒或无毒.因此黄酮类化合物被认为是颇有应用前景的抗白血病药物.本文就黄酮类化合物抗白血病作用及其机制的研究进展作一综述.     

艾叶提取工艺及抗氧化活性的研究

通过正交实验方法研究了艾叶醇-水体系的提取工艺，采用比色法测定其黄酮类和多糖类化合物的含量，得到不同因素对总黄酮和总多糖提取的影响程度依次为：乙醇浓度〉提取温度〉提取时间〉料液比；并以化学发光法测定各提取液的抗氧化活性。结果表明；艾叶中含有丰富的黄酮类、多糖类化合物，具有很强的抗氧化活性。     

山里红叶多元酚类成分对大鼠中性粒细胞呼吸爆发的抑制作用

目的:比较山里红(Crataegus pinnatifida Bge.var.major N.E.Br.)叶中多元酚类成分对大鼠中性粒细胞呼吸爆发的抑制活性.方法:以佛波豆蔻酸乙酯(PMA)为刺激剂,鲁米诺为发光剂,通过化学发光法比较山里红叶中11种主要多元酚类成分对大鼠中性粒细胞呼吸爆发的抑制作用.结果:11种多元酚类成分对大鼠中性粒细胞呼吸爆发表现出不同的抑制活性.黄酮类成分活性最强,其次是绿原酸,表儿茶素活性最弱.黄酮类成分既可抑制大鼠中性粒细胞呼吸爆发,又可清除呼吸爆发后产生的自由基;而绿原酸则对呼吸爆发的抑制作用较弱,主要是直接清除呼吸爆发产生的氧自由基;表儿荼素则只能清除呼吸爆发产生的自由基,对呼吸爆发本身没有抑制作用.结论:山里红叶中多元酚类成分对大鼠中性粒细胞呼吸爆发具有明显的抑制活性,其中主要活性成分为黄酮类化合物.     

植物中醛糖还原酶抑制剂的研究进展

醛糖还原酶抑制剂(ARIs)是治疗糖尿病并发症的重要药物之一。可通过抑制糖代谢的多元醇通路中的限速酶—醛糖还原酶的活性,减少体内山梨醇的蓄积,从而预防和延迟糖尿病并发症的发生和发展。AIRs可通过合成或从天然产物中分离得到。详细综述了近10年来从植物中分离提取的对醛糖还原酶有抑制作用的化合物及其药理活性,主要包括黄酮类化合物、酚类及其衍生物、萜类和生物碱等,它们在体外对醛糖还原酶均有不同程度的抑制作用,并对其发展前景进行了展望。     

半枝莲中生物活性物质的提取及部分理化性质研究

半枝莲中生物活性物质主要为黄酮类化合物,本文利用正交实验对提取工艺的条件进行了研究,确定的最适工艺条件为：提取温度50℃、提取时间1h。通过对半枝莲提取物理化性黄酮苷质的鉴定,初步确定提取物中含黄酮类化合物,主要为黄酮苷类。     

镰形棘豆中黄酮类化合物抗肿瘤活性的体外实验研究

目的 对从镰形棘豆中分离得到的13个黄酮类单体化合物进行体外抗肿瘤活性筛选.方法 采用MTT法观察黄酮类化合物对SMMC-7721、Hela、A549、MGC-803、MDA-MB-231、LOVO 6种人癌细胞株的影响.结果 黄酮类化合物具有不同程度的抑制人癌细胞株增殖的作用,并有明显的量效关系.结论 镰形棘豆中黄酮类化合物作为抗肿瘤药物具有较好的开发前景.     

莲雄蕊提取物和黄酮类化合物具抗氧化活性

从莲Nelumbo nucifera Gaertn.的雄蕊中分离的提取物和黄酮类化合物可抑制活性氧(ROS)的形成,抑制DPPH和脂质过氧化离子的活性,防治氧化应激引起的疾病。莲的雄蕊用水、甲醇、丁醇等极性溶剂或醋酸乙酯、正己烷、二氯甲烷或氯仿等非极性溶剂提取得到具抗氧化作用的粗提物。莲雄蕊提取物和黄酮类化合物具抗氧化活性     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Electro-Acupuncture Combined with the Trigger Point Needle-Embedding for Treatment of Primary Trigeminal Neuralgia in 31 Cases

In recent years, the author of this essay has applied electro-acupuncture combined with the trigger point needle-embedding for treatment of primary trigeminal neuralgia in 31 cases, yielding satis- factory results as reported in the following.     

Investigation of Matrix Metalloproteinase -1, 2 and tissue inhibitor of matrix metalloproteinases-1 in Endometriosis

Objective： To explore the role of matrix metalloproteinase-1,2 （MMP-1, MMP-2） and tissue inhibitor of matrix metalloproteinases-1 （TIMP-1） in endometriosis. Methods： The eutopic and ectopic endometria from 40 subjects suffering from endometriosis and regular.endometria from 40 subjects （excluding endometriosis） were collected and examined by in situ hybridization technology and western blot assay. Results： Both expressions of MMP-1 and -2 were stronger in ectopic endometrium and eutopic endometrium than in normal endometrium. On the contrary, the expression of TIMP-1 in ectopic endometrium and eutopic endometrium was lower. The differences were significant （P 〈 0.01 ）. Moreover, there was no relationship among the expressions of MMP-1, 2 and TIMP-1 in ectopic endometrium. Conclusion： The expressions of MMP-1, 2 and TIMP-1 lose balance and lack of periodic changes in ectopic endometrium , which explains the biological invasive behavior of endometriosis. It was suggested-that regulating the balance between the MMPs and TIMP-1 should be an ideal therapeutic target to endometriosis.     

Shi Da-zhuo (史大卓) —An outstanding cardiologist of integrative medicine

Prof. SHI Da-zhuo, Ph.D., male, was born on March 20, 1960. Prof. SHI entered the Ph.D. program in 1990 at the China Academy of Chinese Medical Sciences under the supervision of Prof. CHEN Ke-ji, majoring in the treatment of cardiovascular diseases. After receiving his Ph.D. degree in 1993, Prof. SHI started working at the Cardiovascular Center in Xiyuan Hospital affiliated to China Academy of Chinese Medical sciences.     

Persist in and Carry Forward the Integrative Medical Research——Speech at the 6th National General Congress of Chinese Association of Integrative Medicine by Academician CHEN Zhu,Minister of Ministry of Health

The 6th National General Congress of Chinese Association of Integrative Medicine （CALM） was convened at 19-20, April 2008 in Beijing. Academician CHEN Zhu, the minister of Ministry of Health indicated at the congress that the integration of Chinese and Western medicine is very well in keeping with the situation of our country and the general rule of development in medical science; and as a good integration of Chinese medicine and Western medicine, it is mutually beneficial and advantageous to both of them. Seeing the creativity shown in integrative medical investigation in theoretic and methodological sides, we should and must persist in and develop it.