坎地沙坦酯速释及缓释固体分散体的制备研究

目的制备坎地沙坦酯速释和缓释固体分散体,提高坎地沙坦酯生物利用度。方法用固体分散体技术制备坎地沙坦酯速释和缓释固体分散体,并将制备方法对体外释放度的影响进行分析。结果聚乙二醇6000、泊洛沙姆188为混合载体的速释型固体分散体与物理混合物对比,药物的溶出速率和溶出量明显提高。乙基纤维素（EC）的黏度对缓释型固体分散体有较大影响;释放调节剂PEG的使用比例影响缓释效果;药物与载体用量的比例控制在1∶4~1∶6之间缓释效果较好。结论速释和缓释固体分散体均能提高药物的溶出量,以乙基纤维素为载体的固体分散体缓释效果明显。     

表面活性剂对葛根素固体分散体体外溶出的影响

目的:应用固体分散技术,以提高葛根素的体外溶出速率.方法:采用溶剂法制备了含有和不含有表面活性剂吐温-80的葛根素的PVP-3800固体分散体,进行体外的溶出实验,并用DSC鉴别不同固体分散体中药物的分散状态.结果:葛根素的固体分散体明显地促进了葛根素的溶出,并且含有吐温-80的固体分散体溶出速率比不含吐温-80溶出速率快.DSC的结果表明,葛根素、PVP与吐温120的比例在1∶5∶2和1∶8∶2 形成无定型的共沉淀物,而1∶2∶0,1∶5∶0,1∶8∶0的葛根素以微晶形式存在于固体分散体中.结论:表面活性剂可以提高葛根素固体分散体的溶出速率.     

雷公藤红素胶体二氧化硅缓释固体分散体研究

目的 制备雷公藤红素（tripterine）缓释固体分散体,使药物释放度提高,同时缓慢释放药物,以降低其毒副作用。方法 以胶体二氧化硅为载体,采用溶剂蒸发法制备雷公藤红素固体分散体,对其体外溶出和物相特征进行研究。结果 雷公藤红素和胶体二氧化硅按1∶12制备的固体分散体中,药物缓慢释放,8 h时药物的体外释放度达到90%以上。经差示扫描量热、X衍射和电镜分析,固体分散体中药物以非晶形式存在于载体中。结论 雷公藤红素胶体二氧化硅固体分散体制备工艺简单,药物缓慢释放且释放较完全,具有实际应用价值。     

热熔挤出技术制备小檗红碱固体分散体及其体外评价

[目的]采用热熔挤出技术制备微溶性药物小檗红碱的固体分散体,以提高其溶解度,延缓其体外释放行为。[方法]以Soluplus^® 为载体,采用同螺杆热熔挤出机制备小檗红碱固体分散体,通过差示扫描量热（DSC）分析、粉末X射线衍射（XRD）分析、扫描电子显微镜（SEM）观察和傅里叶变换红外光谱（FT-IR）分析对制备的固体分散体进行表征,并考察挤出物在不同介质中的溶解度和体外溶出度。[结果]DSC和XRD分析结果显示,固体分散体中小檗红碱的主要特征峰减弱甚至部分消失,SEM结果表明固体分散体为无规则形态。FT-IR结果表明小檗红碱与Soluplus^®之间可能存在氢键作用。所制备的小檗红碱固体分散体在pH 6.8的磷酸盐缓冲液中溶解度为原料药的2.59倍。体外溶出度结果显示,小檗红碱固体分散体具有明显缓释作用。[结论]成功制备了小檗红碱固体分散体,且能显著提高其溶解度,并延缓其体外释放行为。     

活性氯酚3-氯-3’,4’-二羟基二苯甲酮固体分散体的制备及体外溶出研究

目的制备活性氯酚3-氯-3’,4’-二羟基二苯甲酮(HP46)的固体分散体(solid dispersion,SD),以提高HP46的体外溶解度和溶出度。方法以聚乙烯吡咯烷酮(PVPK30)为载体,吐温(Tween80)为表面活性剂,采用溶剂法制备HP46的固体分散体,优化固体分散体组成,并进行体外溶出研究。运用粉末X-射线衍射(XRD)和差示热量扫描(DSC)分析固体分散体中药物的分散状态。结果 HP46固体分散体组成的最优质量比为HP46-PVPK30-Tween80 1∶3∶1,XRD和DSC结果表明HP46以无定型或分子状态存在于载体中,体外溶解度和溶出速率显著提高,溶解度为1 319.4μg/ml,在20 min内累积溶出率为77.23%,溶解度和溶出度较原料药分别提高约30倍和8倍。结论以PVPK30为载体,加入表面活性剂Tween80,可有效提高HP46的溶解度和溶出度,固体分散体最优质量比为HP46-PVPK30-Tween80 1∶3∶1。     

川芎嗪自乳化缓释固体分散体释放度测定方法研究

目的:建立川芎嗪自乳化缓释固体分散体释放度测定方法。方法:采用HPLC法测定川芎嗪自乳化缓释固体分散体中TMP的含量,考察相关因素对其体外释药的影响。结果:以转篮法为溶出度测定方法,释放介质为脱气纯水,转速为50r/min。结论:建立了良好的川芎嗪自乳化缓释固体分散体释放度测定方法,为评价和控制该药的质量提供依据。     

他克莫司固体分散体的制备及肠吸收研究

制备他克莫司固体分散体,提高他克莫司的溶解度、促进药物吸收。采用不同的水溶性载体制备固体分散体,通过体外溶出度实验筛选出最优处方,采用扫描电子显微镜法(SEM)、X射线衍射法(XRD)、差示扫描量热法(DSC)对最优处方的固体分散体进行结构表征,并通过大鼠在体胃肠吸收实验研究其在胃肠道吸收特性。体外溶出结果表明,采用水溶性载体羟丙甲纤维素(HPMC E3)制备的固体分散体溶出速率最快;SEM、XRD和DSC结果表明,他克莫司以无定形形态分布于载体HPMC E3中;大鼠在体胃肠吸收实验结果表明,以HPMC E3为载体制备的固体分散体在胃肠道吸收比原料药显著增加。故以HPMC E3为载体制备他克莫司固体分散体可以有效提高溶解度,促进药物吸收。     

多烯紫杉醇固体分散体的制备和体内外研究

目的 优选多烯紫杉醇固体分散体的制备工艺,提高多烯紫杉醇的体外溶出度和绝对生物利用度.方法 采用溶剂法制备不同载体,不同溶剂和不同药物载体比例的多烯紫杉醇固体分散体,并进行了体外溶出实验和大鼠体内生物利用度研究;同时采用XRD,DSC,ESEM法鉴别药物在固体分散体中的存在状态.结果 泊洛沙姆188固体分散体对多烯紫杉醇增溶的效果优于PVPk30和单硬脂酸甘油酯;且溶出实验2 h时,泊洛沙姆188固体分散体(10:90)的累计溶出百分率接近于原料药的4倍;XRD,DSC、ESEM显示多烯紫杉醇在固体分散体中以无定型态或分子状态存在;高、低剂量大鼠口服给药的绝对生物利用度分别为10.1%和35.1%.结论 固体分散体能明显提高多烯紫杉醇的体外溶出度和口服生物利用度.     

盐酸尼卡地平肠溶缓释微丸的研制

目的：将盐酸尼卡地平制成肠溶缓释固体分散体,以促进其在肠道内溶出,提高制剂的生物利用度。方法：以水溶性材料（PEG6000）和肠溶性材料(Ⅱ丙烯酸树脂)为混合载体,采用溶剂法制备了盐酸尼卡地平固体分散体。通过正交实验设计,筛选得到了具有理想肠溶缓释效果的处方。结果：盐酸尼卡地平制成的肠溶缓释固体分散体在人工肠液中3 h释放量为54.33％,10 h释放量为80.18％。其体外释药方式符合Higuchi 方程。DTA分析和X-射线粉末衍射证实药物以无定形态分散于载体中。结论：以固体分散体制备的肠溶缓释微丸具有促进药物溶出、定位缓慢释放的作用。     

固体分散体技术改善长春西汀溶出特性的研究

目的 采用固体分散体技术改善长春西汀(VIN)的体外溶出特性.方法 分别以PEG6000、PVPK30为载体,用熔融法、溶剂法制备长春西汀固体分散体,差热分析、X-射线粉末衍射分析以鉴别药物在载体中的存在状态,并进行了稳定性试验和体外溶出度试验,考察载体的用量、载体中加入表面活性剂的用量和溶出介质对药物溶出特性的影响.结果 VIN-PEG6000固体分散体中药物部分以分子状态分散,部分以微晶分散;VIN-PVPK30固体分散体中药物以无定形状态存在;VIN-PVPK30的药物溶出好于VIN-PEG6000,但稳定性不如VIN-PEG6000;载体的用量、表面活性剂的用量和溶出介质对药物溶出有一定影响.结论 长春西汀固体分散体VIN-PEG6000-十二烷基硫酸钠(1∶6∶0.8)能显著提高药物的溶出速度和程度.     

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.