HPLC法测定刺五加中游离异嗪皮啶和总异嗪皮啶的含量

目的建立刺五加含量测定方法。方法 :采用DiamonsilC18柱 ( 2 0 0mm× 4 8mmi d ,5 μm) ,流动相为乙腈 甲醇 水 冰醋酸 (V∶V∶V∶V =1 7∶3∶80∶1 ) ,流速 0 9mL·min-1,检测波长3 44nm。结果异嗪皮啶在 1 2 4～ 49 6mg·L-1内质量浓度与峰面积呈良好线性关系 ,游离型异嗪皮啶和总异嗪皮啶的平均回收率分别为 1 0 0 7% ,98 8% ,RSD分别为 2 5 %和 1 9%。结论本法可作为刺五加质量控制的手段之一。     

中药三叶青提取物抗肿瘤机制初探

目的:通过对三叶青提取物小鼠免疫调节功能的评价,初步确定其抗肿瘤作用的基本机制。方法:从细胞免疫、体液免疫、单核-巨噬细胞吞噬作用和自然杀伤细胞的攻击作用4个方面观察三叶青提取物对小鼠免疫功能的影响。结果:三叶青提取物5.0、15.0、25.0 g/kg.BW剂量组均能提高ConA诱导的小鼠脾淋巴细胞的增殖能力和小鼠左后足跖部厚度差24 h测量值;2.5、5.0 g/kg.BW剂量组均能提高小鼠溶血空斑数;2.5、5.0、15.0和25.0 g/kg.BW剂量组均能提高小鼠碳廓清的能力;15.0 g/kg.BW剂量组能提高小鼠腹腔巨噬细胞吞噬鸡红细胞的吞噬指数。结论:三叶青提取物具有增强小鼠免疫力作用,为其抗肿瘤作用机制之一。     

芫花根总黄酮含药血清对小鼠细胞免疫功能的影响

目的建立小鼠血清中芫花根总黄酮(TFRD)各成分的HPLC测定方法,探讨TFRD含药血清对正常小鼠细胞免疫功能的影响。方法HPLC法测定小鼠单次ig给药后不同时间点血药浓度;M TT法检测多次ig给药后含药血清对正常小鼠脾淋巴细胞增殖、NK与LAK细胞杀伤活性和腹腔巨噬细胞的吞噬功能等细胞免疫功能的影响。结果单次ig TFRD后血药浓度在20~30 m in达到高峰;TFRD含药血清能促进脾淋巴细胞增殖,增加NK和LAK细胞杀伤活性,增强腹腔巨噬细胞的吞噬能力。结论TFRD含药血清能增强正常小鼠细胞免疫功能。     

大黄HPLC指纹图谱分析

 目的采用高效液相色谱法建立大黄药材的指纹图谱,为其质量控制提供依据。方法Kromasil C₈(4.6mm×200mm,5μm)色谱柱,甲醇-0.4%冰醋酸溶液梯度洗脱,流速0.8mL·min^-1,检测波长254nm。结果通过聚类分析,14个正品大黄样品被聚为2类,非正品被分为4类。通过相似度计算,14个正品大黄样品的相似度均在0.7以上,其余非正品的相似度均小于0.60。结论本方法可用于大黄的真伪鉴别和质量评价。     

乳痈平中大黄等药材提取工艺的正交实验研究

目的确定乳痈平颗粒处方中大黄素的最佳提取工艺。方法以大黄素提取率和得膏率为考查指标,考查乙醇浓度及其用量和煎煮时间对大黄等药材提取效果的影响。结果最佳工艺为:加70%乙醇(9+7)倍量,热回流(2+2)h。结论该最佳工艺是稳定可行的,可用于工业化生产。     

熟三七联合曲美他嗪治疗冠心病心肌缺血的临床观察

目的:开展熟三七联合曲美他嗪治疗冠心病心肌缺血的临床观察。方法:将冠心病心肌缺血的患者126例随机分为对照组、曲美组和联合用药组,每组42例。对照组口服阿司匹林肠溶片和单硝酸异山梨酯缓释胶囊;曲美组在对照组的基础上,增加口服盐酸曲美他嗪片;联合用药组在对照组的基础上,增加口服盐酸曲美他嗪片和熟三七粉。结果:相较对照组和曲美组,联合用药组能有效降低冠心病患者血液中TC、TG与LDL-C的水平,升高HDL-C的水平,显著改善临床症状。其总有效率可大幅度地提高至95.24%(P<0.05),而总不良反应发生率大幅度地降低至7.14%(P<0.01)。结论:熟三七联合曲美他嗪治疗冠心病心肌缺血疗效明确,建议在临床上推广应用。     

Starch digestibility modulation significantly improves glycemic variability in type 2 diabetic subjects: A pilot study

Background and aimsIn type 2 diabetes (T2D) patients, the reduction of glycemic variability and postprandial glucose excursions is essential to limit diabetes complications, beyond HbA1c level. This study aimed at determining whether increasing the content of Slowly Digestible Starch (SDS) in T2D patients’ diet could reduce postprandial hyperglycemia and glycemic variability compared with a conventional low-SDS diet.Methods and resultsFor this randomized cross-over pilot study, 8 subjects with T2D consumed a controlled diet for one week, containing starchy products high or low in SDS. Glycemic variability parameters were evaluated using a Continuous Glucose Monitoring System.Glycemic variability was significantly lower during High-SDS diet compared to Low-SDS diet for MAGE (Mean Amplitude of Glycemic Excursions, p < 0.01), SD (Standard Deviation, p < 0.05), and CV (Coefficient of Variation, p < 0.01). The TIR (Time In Range) [140–180 mg/dL[ was significantly higher during High-SDS diet (p < 0.0001) whereas TIRs ≥180 mg/dL were significantly lower during High-SDS diet. Post-meals tAUC (total Area Under the Curve) were significantly lower during High-SDS diet.ConclusionOne week of High-SDS Diet in T2D patients significantly improves glycemic variability and reduces postprandial glycemic excursions. Modulation of starch digestibility in the diet could be used as a simple nutritional tool in T2D patients to improve daily glycemic control.Registration numberin clinicaltrials.gov: NCT 03289494.     

Comparison of Turkish Disability Policy,the United Nations Convention on the Rights of Persons with Disabilities,and the core concepts of U.S. disability policy

This article compares Turkey's Constitution and its Disabled Persons Act with the United Nations Convention on the Rights of Persons with Disabilities (UNCRPD) and the core concepts of United States (U.S.) disability policy. Conclusions are that Turkey's Constitution and statutes are remarkably congruent with the UNCRPD and the core concepts. They are not, however, identical. This fact suggests that Turkey can still improve its statutes to reflect more closely the UNCRPD and core concepts. The review of these policy documents suggests that there are other steps Turkey can take to improve disability policy and its implementation. They are to amend Turkey's laws, determine the status of individuals and families affected by disability, and pursue vigorous implementation of their rights.     

Preclinical coronary endothelial dysfunction in Egyptian Behçet’s disease patients; Tc-99m sestamibi pharmacological Gated-SPECT,is it a useful screening tool?

IntroductionBehçet’s disease (BD) is an idiopathic multisystem disorder. Cardiac involvement[cardio-BD] occurs in 7–60% of BD patients. Technetium 99m-Methoxyisobutyl isonitrile (Tc-99m sestamibi) is a myocardial perfusion imaging agent that is used for evaluation of the coronary flow.Aim of the workTo evaluate the usefulness of Dipyridamole pharmacological stress test in conjunction with Tc-99m sestamibi cardiac gated single photon emission computed tomography (GSPECT) to investigate the prevalence of subclinical coronary endothelial dysfunction[SCED] in asymptomatic Egyptian BD patients; also to assess possibly associated clinical predictive variables.Patients and MethodsTwenty-five BD patients without overt cardiac involvement and fifteen healthy controls matched for age, BMI and sex were included. Database included full history, clinical examination, relevant laboratory tests, and Tc-99m sestamibi myocardial GSPECT with coronary angiography[CAG] in GSPECT positive cases. Disease activity was assessed using Behçet’s Disease Current Activity Form (BDCAF).ResultsSCED detected by reduced flow or left ventricular dysfunction (LVD) or both was found in 13/25[52%] of BD-patients[12 males and 1 female] vs. 1/15[6.7%] of controls[P < 0.0001] with normal CAG. Subjects with positive GSPECT had significantly older age[P = 0.01] and longer disease duration (P = 0.02) and were more frequently males (P < 0.0001) than those with negative GSPECT. No statistically significant differences between cases with negative and positive GSPECT were found regarding other clinical or laboratory parameters.ConclusionTc-99m sestamibi GSPECT could be a useful screening tool for detection of SCED in BD patients, so early prophylactic measures and therapy modifications could be considered.