红树林真菌泡盛酒曲霉中的环二肽和核苷类成分

目的 研究一株红树林真菌泡盛酒曲霉菌丝体的化学成分.方法 采用硅胶柱色谱法、反相柱色谱法以及高效液相色谱法进行分离和纯化,并根据光谱分析进行结构鉴定.结果 分离得到4个环二肽类成分和3个核苷类成分,分别鉴定为环(异亮-缬)二肽(Ⅰ)、环(亮-缬)二肽(Ⅱ)、环(亮-异亮)二肽(Ⅲ)、环(亮-亮)二肽(Ⅳ)、尿嘧啶脱氧核糖核苷(Ⅴ)、腺嘌呤(Ⅵ)、胸腺嘧啶脱氧核糖核苷(Ⅶ).结论 4个环二肽类成分为该属首次分离得到.     

深海细菌Psychrobacter submarinus 1A01998的次级代谢产物研究

目的 对来自深海沉积物中的海洋细菌Psychrobacter submarinus1 A01998的次级代谢产物进行研究.方法 采用大孑L吸附树脂、硅胶、ODS和Sephadex LH-20凝胶等柱层析色谱分离方法,对海洋细菌Psychrobacter submarinus1 A01998进行次级代谢产物的分离纯化,根据1H NMR、13C NMR和MS等波谱数据分析并结合相关文献对化学结构进行鉴定.结果 从深海细菌Psychrobacter submarinus 1A01998的发酵粗提物中分离得到4个化合物,分别鉴定为环(L-脯氨酸-L-酪氨酸)(1)、环(D-脯氨酸-L-酪氨酸)(2)、3-吲哚甲醛(3)、2'-O-甲氧基尿嘧啶核苷(4).结论 化合物1～4均为首次从该属中分离得到,其中化合物1、2为环二肽类化合物.     

仿刺参共附生放线菌Brevibacterium sp.中的环二肽成分的分离和鉴定

目的 对仿刺参共附生放线菌Brevibacterium sp.的次生代谢产物进行研究.方法 运用硅胶柱色谱、Sephadex LH-20凝胶柱色谱、高效液相色谱(HPLC)等现代色谱技术对放线菌的乙酸乙酯提取物进行分离纯化,在核磁共振(NMR)、质谱(MS)等现代波谱技术及与文献比对的基础上对其结构进行鉴定.结果 共分离得到7个环二肽类化合物,分别鉴定为:环-(L-脯氨酸-L-苯丙氨酸)(1)、环-(L-脯氨酸-L-甲硫氨酸)(2)、环-(L-脯氨酸-L-酪氨酸)(3)、环-(L-脯氨酸-L-缬氨酸)(4)、环-(L-脯氨酸-L-脯氨酸)(5)、环(L-缬氨酸-甘氨酸)(6)、环-(L-脯氨酸-L-亮氨酸)(7).结论 本研究是对仿刺参共附生微生物次生代谢产物研究的首次报道,这7个化合物均为首次从放线菌Brevibacterium sp.中分离得到.     

中国南海海绵Aaptos suberitoides的化学成分

目的 研究中国南海海绵Aaptos suberitoides中化学成分。方法 运用薄层色谱、Sephadex LH-20凝胶色谱、硅胶色谱、半制备高效液相各种色谱手段对化合物进行分离纯化。利用核磁共振、质谱等波谱学手段,并结合其他理化性质及文献数据鉴定化合物的结构。结果 从海绵Aaptos suberitoides的甲醇粗提取物中分离鉴定了7个单体化合物,分别为3-(methylamino)demethyl(oxy)aaptamnie、aaptamine、尿嘧啶、胸腺嘧啶、环(脯-丝)二肽[cyclo(Pro-Ser)]、环(脯-苏)二肽[cyclo(Pro-Thr)]、脱氧胸腺嘧啶核苷。结论 化合物aaptamine、环(脯-丝)二肽[cyclo(Pro-Ser)]、环(脯-苏)二肽[cyclo(Pro-Thr)]为首次从本属海绵中分离得到。     

海洋芽孢杆菌次生代谢产物的分离、鉴定及生物学活性的初步研究

目的:开发药用海洋微生物资源,从微生物代谢产物中获取活性物质.方法:利用硅胶柱、凝胶柱、高效液相等色谱技术对抗菌模型筛选到的活性菌株F81612发酵液的乙酸乙酯浸膏进行分离,通过1HNMR、13CNMR和MS对化合物进行结构鉴定,利用纸片法和四甲基偶氮唑盐比色法对单体化合物进行生物学活性评价.结果和结论:分离鉴定了11个化合物,它们分别为:macrolactin A(1),3-羟基乙酰基吲哚(2),3-吲哚乙醇(3),环(色-脯)二肽(4),环(异亮-色)二肽(5),环(亮-脯)二肽(6),环(亮-缬)二肽(7),环(异亮-脯)二肽(8),环(苯丙-缬)二肽(9),N-苯乙基乙酰胺(10).对羟基苯甲醛(11).化合物1为主要活性成分,对稻瘟霉、大肠杆菌、金黄色葡萄球菌的MIC值分别为3.6、0.45和6.3ìg/ml,对肿瘤细胞株HeLa及HepG2的IC50值分别为2.0和1.8ìg/ml.     

繁缕中的水溶性化学成分

目的:研究繁缕Stellariamedia(L.)Cyr.的水溶性化学成分.方法:运用多种层析分离方法进行分离纯化,并用波谱数据和理化常数进行对照,确定化合物的结构.结果:从繁缕新鲜药材的汁液中分离并鉴定了21个化合物,分别为:环(亮-异亮)二肽(1),环(缬-酪)二肽(2),α-乙基-D-吡喃半乳糖苷(α-ethyl-D-pyranogalactoside,3),尿嘧啶(uracil,4),胸腺嘧啶(thymine,5),胸苷(thymidine,6),鸟苷(guanosine,7),2-氯-腺苷(2-chloroadenosine,8);另外还分离并鉴定了13个氨基酸(化合物9～21),包括11个常见氨基酸和2个特殊氨基酸,分别为:天冬氨酸,谷氨酸,丙氨酸,丝氨酸,缬氨酸,亮氨酸,甘氨酸,苏氨酸,酪氨酸,赖氨酸,组氨酸,γ-氨基丁酸及d-氨基-y-羟基-戊二酸.结论:此21个化合物均为首次从该植物中分离得到.     

海洋放线菌Nocardiopsis sp.SCSIO 11492的抗肿瘤活性成分研究

目的 研究海洋放线菌Nocardiopsis sp.SCSIO 11492的抗肿瘤活性成分.方法 采用ODS反相硅胶中压柱色谱、正相硅胶柱色谱、Sephadex LH-20凝胶柱色谱等方法分离纯化次级代谢产物;13 C NMR、1 H NMR、HSQC、1 H-1 HCOSY、HMBC等波谱技术并结合电喷雾电离质谱法鉴定结构;MTT法进行体外抗肿瘤活性测试.结果 从海洋放线菌Nocardiopsis sp.SCSIO 11492的乙酸乙酯萃取物中分离得到8个化合物,分别为2′-脱氧腺苷(1)、2′-脱氧胸腺嘧啶核苷(2)、2′-脱氧尿苷(3)、尿嘧啶核苷(4)、1-棕榈酰-3-β-D-半乳糖甘油酯(5)、环(亮-缬)二肽(6)、环(缬-脯)二肽(7)、环(脯-脯)二肽(8).其中化合物5对小鼠单核巨噬细胞白血病细胞RAW264.7显示出较好的生长抑制活性(IC50=10.9μmol/L),其他化合物均没有表现出明显的细胞毒活性(IC50>20.0μmol/L).结论 以上8个化合物均为首次从该菌中分离得到,其中化合物5可能是该菌的抗肿瘤活性成分.     

新疆枸杞子化学成分的研究

目的 研究新疆枸杞子的化学成分.方法 采用多种色谱方法对新疆枸杞子含有的化合物进行分离纯化,利用波谱法对得到的化合物进行结构鉴定.结果 经化学方法和光谱数据分析得到7种化合物,其中4种化合物的结构鉴定为:β-谷甾醇(β-Sitosterol)(Ⅱ)、β-谷甾醇葡萄糖苷(daucosterol)(Ⅲ)、4-羟基-反式-肉桂酸(4-hydroxide radical-antiform-cinnamic acid)(Ⅴ)、芦丁(rutin)(Ⅰ).结论 从新疆枸杞子中分离得到7种化合物,其中化合物Ⅰ、Ⅱ、Ⅲ、Ⅴ为首次从新疆枸杞子中分离得到.     

野生马齿苋脂肪酸化学成分的分离与鉴定

目的提取、鉴定野生马齿苋脂肪酸有效成分的种类和含量,研究马齿苋脂肪酸的生物活性成份。方法对马齿苋鲜品全草(茎、叶及种子)脂肪油进行提取,经皂化-甲酯化处理,应用气相色谱-质谱分析法鉴定分析马齿苋脂肪酸有效成分的种类和含量。结果结果显示,马齿苋脂肪酸气质谱解析出16种成分,含亚油酸(22.57%)、ω-3脂肪酸(ω-3FA)—α-亚麻酸(α-LNA)(1.35%)、油酸(1.27%)、14-十八烯酸(24.37%)等不饱和脂肪酸共计49.57%。结论研究表明,马齿苋脂肪油富含多不饱和脂肪酸,其有效成分亚油酸、ω-3脂肪酸(ω-3FA)—α-亚麻酸(α-LNA)、油酸比较丰富,马齿苋作为一种新型的含有各种营养成分的绿色食品,在药品、食品、保健品等方面具有广阔的开发利用前景。     

紫丁香叶化学成分研究

目的 研究木犀科丁香属植物紫丁香Syringa oblata 叶的化学成分。方法 利用色谱方法反复进行分离纯化,通过波谱分析、化学方法及参照文献鉴定单体成分结构。结果 从紫丁香叶中分离得到8个化合物,分别鉴定为7-methyl-1-oxo-octahydro-cyclopenta ［c］ pyran-4-carboxylic acid (Ⅰ)、7-羟基-6-甲氧基香豆素(莨菪亭)(Ⅱ)、5,7,4′-三羟基黄酮(芹菜素)(Ⅲ)、白桦酸(Ⅳ)、乌苏酸(Ⅴ)、19α-羟基乌苏酸(Ⅵ)、3-甲氧基-4-羟基苯甲酸(Ⅶ)、胡萝卜苷(Ⅷ)。结论 化合物Ⅰ为环烯醚萜氧化产物,化合物Ⅱ、Ⅲ、Ⅵ、Ⅶ为首次从该属植物中分离得到。     

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.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

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.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.