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1.
双波长薄层扫描法测定优力藤片中雷藤素甲的含量 总被引:1,自引:0,他引:1
用双波长薄层扫描法测定优力藤片(YOLITEN)中雷藤素甲(triptolide)的含量。采用硅胶G-CMCNa薄板,样品经氧化铝吸附、氯仿回流提取、浓缩后点样。展开剂为乙酸乙酯-氯仿(1.3:2.0),用岛津CS-9000型扫描仪λ_s=510nm,λ_R=610nm波长处扫描。随行外标两点法计算含量。线性范围为0.1231~0.7386μg,回归方程A=61803.26C+5576.85,r=0.9998。回收率为104.1%,RSD=2.73%(n=6)。 相似文献
2.
用双波长薄层扫描法测定优力藤片(YOLITEN)中雷藤素甲(triptolide)的含量。采用硅胶G-CMCNa薄板,样品经氧化铝吸附、氯仿回流提取、浓缩后点样。展开剂为乙酸乙酯-氯仿(1.3:2.0),用岛津CS-9000型扫描仪λ_s=510nm,λ_R=610nm波长处扫描。随行外标两点法计算含量。线性范围为0.1231~0.7386μg,回归方程A=61803.26C+5576.85,r=0.9998。回收率为104.1%,RSD=2.73%(n=6)。 相似文献
3.
用薄层色谱法测定骨康片中士的宁和马钱子碱含量 总被引:1,自引:0,他引:1
目的 建立骨康片中士的宁和马钱子碱的含量测定方法。方法 采用双波长薄层扫描法,硅胶GF254薄层板,展开剂为甲苯-丙酮-乙醇-浓氨试液(4:3:1:2),检测波长,士的宁λs=258nm,λR=310nm;马钱子碱λS=301nm,λR=335nm。结果 士的宁和马钱子碱的相关系数分别为0.9996和0.9999,方法的回收率分别为99.83%(RSD=1.03%)和96.09%(RSD=2.01 相似文献
4.
双波长薄层扫描法测定牛黄清胃丸中黄芩甙的含量 总被引:3,自引:0,他引:3
采用双波长薄层扫描法测定牛黄丸中黄芩甙的含量,样品用甲醇提取,在聚酰胺板上经醋酸-乙醇二次展开方式分离后选择λR=28nm,λS=207nm进行扫描测定,平均回收率98.19%,RSD=1.47%。 相似文献
5.
用正丁醇提取,薄层扫描法测定芍黄片中芍药甙的含量,薄层条件为含0.5CMC-Na和硅胶GF254的薄层板,氯仿-甲醇-醋酸乙酯(8:3:1)为展开剂,扫描测定λs=215nm,λR=290nm,平均回收率为100.25%,RSD为2.27%。 相似文献
6.
薄层扫描法测定扑尔伪麻片中有效成分的含量 总被引:1,自引:1,他引:0
以硅胶GF254为吸附剂,氯仿-甲醇-氨水(9∶1∶01)为展开剂,采用双波长薄层扫描法同时测定了扑尔伪麻片中的扑尔敏和盐酸伪麻黄碱的含量。扑尔敏在紫外灯下检视,λS=256nm,λR=285nm;盐酸伪麻黄碱采用茚三酮显色,λS=510nm,λR=700nm,两组分的平均回收率分别为9935%和9907%,RSD分别为108%和081%。 相似文献
7.
双波长薄层扫描法测定风油精中华蟾毒精的含量 总被引:1,自引:0,他引:1
应用双波长薄层扫描法测定了风油精中蟾酥的含量。特别对蟾酥中含量较高的华蟾毒精进行了定量测定。薄层色谱条件:固定相为硅胶GF254,展开剂为苯-丙酮(7:3);λs=280nm;λR=335nm;回收率为100.6%;RSD为3.9%(n=5)。本法准确简便,也可供其它含蟾酥制剂进行定量分析。 相似文献
8.
小蔓长春花组织培养物中长春胺的含量测定 总被引:2,自引:0,他引:2
采用薄层扫描法测定小蔓长春花组织培养物中长春胺的含量。应用高效硅胶G薄层板,展开剂为石油醚-氯仿-甲醇(10:10:1.2)。在λS=490nm,λR=550nm波长处扫描。长春胺标准品的线性范围为0.535 ̄3.745μg;平均回收率为98.68%,RSD=1.9%(n=6)。小蔓长春花组织培养物经碱性氯仿和2%硫酸提取后点样,按随行外标两点法进行测定,计算样品的含量。测得在固体和液体培养基B5 相似文献
9.
用薄层扫描法测定康复颗粒剂中苦参碱的含量,用内酮-乙醇-浓氨试液(20:20:3:1)为展开剂,在硅胶G薄层板上分离苦参碱,以改良碘化饿钾为显色剂,采用双波长反射当锯齿扫描一,λs=515nm,λR=650nm,结果表明,苦参碱在92.3238-6.984μg范围内呈线性关系,回归方程为Y=2886.06X-2066.96,r=0.9980。加要回收率为977%。RSD=2.31%,本法简便、快速 相似文献
10.
高效薄层扫描法测定四物汤中阿魏酸含量 总被引:3,自引:0,他引:3
用高效薄层扫描法(HPTLC)测定了中药复方四物汤群煎液、分煎混合液、当归和川芎单煎液中阿魏酸的含量。以高效硅胶薄层板,苯-氯仿-乙酸乙酯-甲酸(8∶2∶2∶0.5)为展开剂,在紫外灯365nm波长下定位,用CS-930型薄层扫描仪进行测定,λs=320nm,λR=240nm,狭缝1.2mm×1.2mm,线形化参数:SX=7,反射法锯齿形扫描,二点外标法定量测定 相似文献
11.
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. 相似文献
12.
Jiageng Zhu Jun Li Ruipeng Ji Jianghao Su Mingshun Shen Zhigang Cao 《南京医科大学学报(自然科学版)》2007,21(2):125-128
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. 相似文献
13.
Tao Ye * Zhi-quan Liu Jian-jun Mu Xi-han Fu Jun Yang Bao-lin Gao and Xiao-hong Zhang Department of Cardiology First Hospital of Xi'an Jiaotong University Xi'an Hanzhong Cardiovascular Institute Hanzhong 《中国医学科学杂志(英文版)》2004,19(4):248-251
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure. 相似文献
14.
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. 相似文献
15.
Jingming Zhu Ningning Hui Xiuhong Jiang Huaxing Zhang Chengzhang Fu 《南京医科大学学报(自然科学版)》2007,21(6):386-389
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. 相似文献
16.
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. 相似文献
17.
The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas: report of 9 cases 总被引:1,自引:0,他引:1
Shaoqin Chen Shengquan Zou Qibao Dai Peisheng Huang Weihua Cai Hong Li 《南京医科大学学报(自然科学版)》2007,21(6):398-401
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. 相似文献
18.
Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine
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A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes. 相似文献
19.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P. 相似文献
20.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine. 相似文献