可生物降解材料聚乳酸及聚乙二醇改性共聚物的合成与回收试验

目的　以廉价易得的食用乳酸为原料 ,采用两步法合成聚乳酸 (PLA)及聚乙二醇改性共聚物 (PLEA) ,并介绍了该类聚合物的回收再用技术。方法　利用测定聚合物的特性粘度与分子量分布 ,探讨合宜的反应条件。结果　该聚合反应条件为 :反应温度为 14 0～ 160℃、反应时间 2 4～ 48h、引发剂 /单体 (W /W)在 0 .0 1%～ 0 .0 4%范围较为合宜。利用本法的回收再用技术 ,丙交酯的回收率在 80 %以上。结论　聚乳酸及共聚物的聚合反应 ,伴随有分子内与分子间的酯转移 ,与反应条件密切相关。     

青蒿琥酯对佐剂性关节炎大鼠血清TNF-α及IL-1β含量的影响

目的 观察青蒿琥酯对大鼠佐剂性关节炎(ajuvant arthritis,AA)的治疗作用及其对 AA 大鼠血清 TNF-α、IL-1β含量的影响.方法 选择体重150～180 g 的雄性 Wistar 大鼠,测量双侧足爪容积后,右后足跖部皮内注射完全弗氏佐剂(0.1 mL/只)建立 AA 模型,于造模后第19天,将出现二次反应的大鼠随机分成模型组、青蒿琥酯治疗组80 mg/(kg·d)、雷公藤多苷组8 mg/(kg·d),每组8只;并随机取8只正常 Wistar 大鼠为空白对照组.治疗各组连续灌胃给药14 d.于给药第15天测量各组大鼠足爪容积后采血,放射免疫分析法测量大鼠血清中 TNF-α及 IL-1β含量.结果 (1)青蒿琥酯对大鼠 AA 有显著的治疗作用.给药第15天各组造模侧足爪平均肿胀率(%)分别为:模型组177.00±37.5、青蒿琥酯组68.81±28.19、雷公藤多苷组66.00±30.78、空白对照组27.25±4.20;青蒿琥酯组抑制率为61.1%,雷公藤多苷抑制率为63%.在抑制 AA 大鼠造模侧足爪肿胀方面,青蒿琥酯、雷公藤多苷组和空白对照组与模型组比较差异有统计学意义 (P＜0.05);青蒿琥酯和雷公藤多苷组比较差异无统计学意义(P＞0.05).各组非造模侧平均肿胀度(%)分别为: 模型组83.25±21.47、青蒿琥酯组34.50±10.23、雷公藤多苷组35.97±10.82、空白对照组28.00±7.76,青蒿琥酯组抑制率为58.6%,雷公藤多苷的抑制率为56.8%.在抑制 AA 大鼠非造模侧足爪肿胀方面,青蒿琥酯、雷公藤多苷和空白对照组与模型组比较差异有统计学意义(P＜0.05);青蒿琥酯和雷公藤多苷组比较差异无统计学意义(P＞0.05).(2)放射免疫分析法检测大鼠血清 TNF-α、IL-1β含量((x-)±s,ng/mL)分别为: 模型组8.76±2.34、0.10±0.03,空白对照组5.40±1.15、0.05±0.01,青蒿琥酯组5.79±1.56、0.06±0.01,雷公藤多苷组6.16±0.94、0.06±0.02.青蒿琥酯、雷公藤多苷和空白对照组与模型组比较差异有统计学意义(P＜0.05);青蒿琥酯组与雷公多苷组比较差异无统计学意义(P＞0.05),且该两组与空白对照组比较亦差异无统计学意义 (P＞0.05).结论 青蒿琥酯对大鼠 AA 具有良好治疗作用,作用机制与其下调 AA 大鼠外周血 TNF- α、IL-1β水平有关.     

不同含量绞股蓝皂苷对高脂血症大鼠血脂的影响

目的:探讨不同含量绞股蓝皂苷对高脂血症模型大鼠血脂水平的影响。方法:采用60只正常雄性SD大鼠,随机分为正常对照组、高脂血症模型对照组、辛伐他汀组及不同含量绞股蓝皂苷(含量分别为40%、80%、98%)组,每组10只;高脂乳剂灌胃8周造模,造模同时分别进行相应药物干预8周。每2周检测一次大鼠血脂及丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)的水平。结果:实验大鼠2周时高脂血症模型已复制成功;造模给药4周后,与模型对照组比较,不同含量绞股蓝皂苷(40%、80%、98%)组胆固醇(TC)、低密度脂蛋白(LDL-C)均显著降低(P0.01,P0.05);造模给药6周后,与模型对照组比较,不同含量绞股蓝皂苷(40%、80%、98%)组TC、LDL-C、ALT均显著降低(P0.01);造模给药8周后,与模型对照组比较,不同含量绞股蓝皂苷(40%、80%、98%)组TC、LDL-C、ALT均显著降低(P0.01,P0.05)。不同含量绞股蓝皂苷(40%、80%、98%)组的大鼠血清TC及LDL-C的含量与其相应的组别分别进行相关性分析,造模给药4周、6周后,相关系数r1与r2值在0.3~0.4之间(P1、P20.05);造模给药8周后,相关系数r1与r2值在0.4~0.6之间(P1、P20.01)。结论:不同含量绞股蓝皂苷(40%、80%、98%)均能有效降低高脂血症大鼠血脂水平并与皂苷的含量呈负相关,对肝组织有一定的保护作用,且绞股蓝皂苷98%含量组改善更明显。     

3-异硫氰酸酯氧化吲哚的合成及其在构建螺环氧化吲哚类化合物中的应用

目的合成3-异硫氰酸酯氧化吲哚并用其构建一系列螺环氧化吲哚类化合物。方法以靛红为原料,经过4步合成3-异硫氰酸酯氧化吲哚,并通过其与C=O,C=N,C=C双键的加成环化反应,合成一系列螺环氧化吲哚类化合物。结果经过4步反应,以高达51%的总收率得到3-异硫氰酸酯氧化吲哚,而用其构建螺环吲哚的收率高达90%~99%。结论利用3-异硫氰酸酯基氧化吲哚可构建多种螺环氧化吲哚类化合物。     

疼痛模型大鼠下丘脑和脊髓CGRP的含量变化

目的通过测定疼痛模型大鼠下丘脑和脊髓降钙素基因相关肽(calcitonin gene related peptide,CGRP)的含量变化,以探讨疼痛产生机制。方法动物随机分成空白对照组,生理盐水对照组和疼痛模型组,左足跖皮下注射5%甲醛50μl建立大鼠疼痛模型,采用放射免疫分析法测定股动脉血、下丘脑和脊髓中CGRP的含量。结果疼痛模型组SD大鼠血浆中及下丘脑和脊髓CGRP含量分别与空白对照组、生理盐水对照组差别有统计学意义(p<0.05);而空白对照组与生理盐水对照组差别无统计学意义(p>0.05)。结论皮下注射5%甲醛可致疼痛症状产生;提示皮下注射甲醛所致疼痛可引起下丘脑和脊髓组织中的CGRP释放增加,结果导致无菌性炎症反应而引起疼痛症状。     

肌醇硫酸酯铝抗胃溃疡的作用机制

为了研究肌醇硫酸酯铝对大鼠乙酸烧灼胃溃疡的保护作用机制,采用乙酸建立大鼠慢性胃溃疡模型。将192只SD大鼠随机分为6组:正常组、肌醇硫酸酯铝高、中、低剂量组、达喜组和奥美拉唑组。各组于给药后的第3、8天分别处死16只大鼠,其中8只采用免疫组织化学染色法测定表皮生长因子(EGF)、表皮生长因子受体(EGFR)、碱性成纤维细胞生长因子(bFGF)、转化生长因子β(TGFβ)、血管内皮生长因子(VEGF),8只测定胃溃疡指数、一氧化氮(NO)含量、超氧化物歧化酶(SOD)活性和丙二醛(MDA)的含量。结果表明,与模型对照组相比,肌醇硫酸酯铝会增加EGF、EGFR、bFGF、TGFβ、VEGF的表达,并有统计学差异(P<0.05、P<0.01)。肌醇硫酸酯铝可以预防穿孔的发生,降低胃溃疡指数,提高溃疡抑制率,同时可降低MDA含量、提高组织中的SOD活性及NO含量(P<0.05)。研究结果表明:肌醇硫酸酯铝治疗胃溃疡的机制可能与促进EGF、EGFR、bFGF、TGFβ、VEGF的表达,降低MDA含量,提高组织中的SOD活性及NO含量有关。     

急性冠状动脉综合征患者C-反应蛋白含量测定

目的探讨急性冠状动脉综合征(ACS)患者血清C-反应蛋白(CRP)的含量变化。方法采用免疫比浊法测定40例不稳定型心绞痛患者、40例急性心肌梗死患者和80例健康体检者的血清CRP含量。结果ACS患者血清CRP含量显著高于对照组(P<0.01);CRP在不稳定型心绞痛及急性心肌梗死组中的阳性率分别为75%和82%。结论CRP含量测定可作为ACS的预测和诊断的参考指标。     

达沙替尼衍生物的合成及其产率分析

〔目的〕制备达沙替尼丁二酸单酯衍生物(DAS-SA)并建立分析产率的方法.〔方法〕采用核磁共振氢谱法确认达沙替尼丁二酸单酯衍生物的合成并采用高效液相色谱法(HPLC),以DAS为对照品间接测定产物中DAS-SA的百分含量(即纯度),最后对该反应的产率进行计算.〔结果〕达沙替尼丁二酸单酯衍生物被成功合成,且反应条件较为温和,通过高效液相色谱法定量分析得到反应产率为71.16％.〔结论〕建立的高效液相色谱法对DAS衍生物进行定量分析具有快速高效、专属性好、准确度高等优点,可为达沙替尼衍生物的含量测定提供方法依据.     

LC-UV法测定华中五味子中五味子酯甲、五味子甲素、五味子乙素含量

目的建立同时测定五味子酯甲、五味子甲素、五味子乙素的LC-UV含量测定方法。综合考察皖南山区野生华中五味子的内在品质,为该品种转为栽培品提供理论依据。方法采用LC-UV法,Agilent TC-C18(2)色谱柱(250 mm×4.6 mm I.D,5 um),以甲醇-水为流动相,梯度洗脱,流速为1 mL/min,柱温30℃,检测波长为240 nm,测定五味子酯甲、五味子甲素、五味子乙素。结果皖南山区野生华中五味子中五味子酯甲、五味子甲素、五味子乙素平均含量分别为0.24%、0.46%、1.22%。结论皖南山区野生华中五味子中五味子酯甲平均含量为0.24%,符合《中国药典》2010版的要求:五味子酯甲含量不低于0.20%,可供药用。通过三指标的综合控制,为皖南华中五味子的品质评价和栽培提供理论支持。     

气相色谱法测定白芥子挥发油中异硫氰酸烯丙酯的含量

目的采用气相色谱法测定白芥子挥发油中异硫氰酸烯丙酯的含量。方法采用水蒸气蒸馏法进行挥发油提取,通过气相色谱法测定异硫氰酸烯丙酯含量。色谱柱:RTX-5毛细管柱(30m×0.53mm×3.0μm);进样口温度:230℃;检测器温度:260℃;载气为高纯氮气,流速为3ml/min;进样方式为分流进样,分流比为10∶1;进样量:2μl。结果异硫氰酸烯丙酯在10～100μg/ml范围内线性关系良好(r=0.999 6);平均回收率为97.64%(RSD=2.39%)。结论本方法简单、灵敏、重复性好,可用于白芥子挥发油中异硫氰酸烯丙酯的含量测定。     

Acupuncture Treatment of Vomiting

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.     

Qiu Baoguo''''s Experience in Treating Consumptive Syndromes after Radio-Chemotherapies

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.     

Insomnia Due to Deficiency of Both the Heart and Spleen Treated by Acupuncture-Moxibustion and Chinese Tuina

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.     

Analysis of CK-19,PDX-1,Nestin,Ngn3 in different donor islet purity in rats

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.     

A preliminary screening study on the associated proteins in human psoriasis vulgaris by serum proteomics technologies

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.     

A CASE OF HUGE GASTRIC DISOPYROBEZOAR

PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are     

Acupuncture Treatment of Chest Bi Syndrome

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.     

Instructions to Contributors

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.     

Development Is A High Level Inheritance for China Time-honored Brand Products

<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.