鬼臼毒素二棕榈酰磷脂酰胆碱前体脂质体的研制及特性观察

目的 研制鬼臼毒素二棕榈酰磷脂酰胆碱(PPT-DPPC)前体脂质体,提高PPT-DPPC脂质体的稳定性。方法 采用冷冻干燥法,选择海藻糖做冻干剂制备PPT-DPPC前体脂质体,并考察PPT-DPPC前体脂质体水合后的形态、粒径分布、包封率和稳定性。结果 PPT-DPPC前体脂质体经水合后在电镜下呈多层多室脂质体,脂质体粒径分布均匀,平均粒径(1.45±0.38)μm,药物包封率为72.3％。分别在4℃、20℃、40℃贮存1、3、6个月,脂质体形态、粒径及包封率均无明显变化。结论 冷冻干燥法制备PPT-DPPC前体脂质体,方法简便易行,制剂粒径分布均匀、包封率高、有良好稳定性。     

低分子肝素前体脂质体制剂的研究

目的：探讨用前体脂质体法制备LMWH脂质体制剂的影响因素及质量评定。方法：以包封率为指标,用正交设计试验法研究由前体脂质成含药脂质体过程中的影响因素,并以包封率、形态、粒度、分布评估了制剂的质量,以动物试验考察了制剂的缓释性。结果：影响因素作用的大小顺序为：甘露醇用量＞类酯配比＞药物浓度＞十八胺用量,最佳工艺制剂包封率为37．3％,在电镜下为圆形或椭圆形,90％颗粒粒径小于1．2μm,动物试验表明,该制剂体内可维持8h的药物作用。结论：前体脂质体法制脂质体制剂有较高的包封率、良好的粒度分布及一定的缓释性。     

肉苁蓉总苷前体脂质体的研制

目的探讨肉苁蓉总苷前体脂质体的各项理化性质及水溶性天然药物提取物制成前体脂质体的可行性。方法采用新型前体脂质体制备技术,将水溶性药物肉苁蓉总苷制成肉苁蓉总苷前体脂质体;采用透射电镜观察形成的脂质体形态;采用粒径测定仪测定脂质体粒径;采用葡聚糖凝胶柱洗脱法测定脂质体包封率。结果电镜下脂质体呈球形,外层隐约可见有多层。脂质体粒径小,粒度分布均匀,脂质体稀释倍数越大,粒径越小,ξ电位在-21.05mV,包封率值为(24.98±0.76)%。结论新型前体脂质体制备技术可将水溶性天然药物提取物肉苁蓉总苷包封在脂质体内,初步说明前体脂质体制备具有可行性。     

齐墩果酸新型前体脂质体的制备和包封率考察

目的为研究齐墩果酸新剂型,制备齐墩果酸新型前体脂质体,并对其包封率进行考察。方法采用一种新型前体脂质体制备方法将齐墩果酸制成前体脂质体,考察前体脂质体水合后形成脂质体的形态、粒径、包封率、体外吸收等各项指标,验证这种新型前体脂质体制备方法制备齐墩果酸脂质体的可行性。结果所形成的齐墩果酸脂质体粒径小、粒度分布均匀,包封率为（85．65±7．96）％。且包封率的大小与脂质体溶液pH、药脂比有关。pH升高,包封率增大,药脂比由5：1增加到10：1时,包封率增大。离体小肠吸收实验证明,齐墩果酸脂质体与对照组相比,可显著促进药物吸收。结论新型前体脂质体制备方法可将齐墩果酸制成齐墩果酸脂质体,且形成的脂质体包封率较高,此研究为齐墩果酸脂质体的研制奠定了基础。     

低分子肝素前体脂质体制剂的研究

目的探讨用前体脂质体法制备LMWH脂质体制剂的影响因素及质量评定.方法以包封率为指标,用正交设计试验法研究由前体脂质体制成含药脂质体过程中的影响因素,并以包封率、形态、粒度分布评估了制剂的质量,以动物试验考察了制剂的缓释性.结果影响因素作用的大小顺序为甘露醇用量＞类脂配比＞药物浓度＞十八胺用量,最佳工艺制剂包封率为37.3%,在电镜下为圆形或椭圆形,90%颗粒粒径小于1.2μm,动物试验表明,该制剂体内可维持8h的药物作用.结论前体脂质体法制备的脂质体制剂有较高的包封率、良好的粒度分布及一定的缓释性.     

流化床包衣法制备灯盏花素前体脂质体的研究

目的提高灯盏花素口服生物利用度,考察流化床包衣法制备灯盏花素前体脂质体的可行性。方法采用流化床包衣法制备灯盏花素前体脂质体;超滤-HPLC法测定灯盏花素前体脂质体的包封率,考察了载体、药脂比、进口温度、喷雾速率和喷雾风量对前体脂质体包封率的影响。结果以山梨醇为载体,药脂比小于1∶3的前体脂质体包封率较高,进口温度、喷雾速率和喷雾风量对包封率均有一定影响;在较优条件下制备的前体脂质体颗粒流动性较好,粒径分布较均匀;重建的灯盏花素脂质体平均粒径为98nm,包封率为(63.1±2.8)%(n=3)。结论流化床包衣法制备灯盏花素前体脂质体是可行的。     

VEGF脂质体的制备及其药剂学性质研究

目的:制备VEGF脂质体,以提高VEGF在体内的稳定性,增加VEGF的治疗作用,并对所制备的VEGF脂质体进行药剂学性质研究。方法:采用薄膜-超声法制备了VEGF脂质体,研究其形态学、载药量、包封率以及粒径分布等性质。结果:本研究制备的脂质体包封率大于70%,载药量约为1.7%,平均粒径为480 nm,粒径范围为330 nm~780 nm,电子透射显微镜下观察脂质体形态,为粒径比较均匀的球状或近球状小囊泡。结论:VEGF脂质体属于大单室脂质体,包封率和载药量相对较高,质量稳定,重现性好。     

齐墩果酸新型前体脂质体的制备和性质研究

目的 为了研究齐墩果酸新剂型,制备齐墩果酸新型前体脂质体,并对其体外性质进行考察.方法 采用一种新型前体脂质体制备方法将齐墩果酸制成前体脂质体,考察了前体脂质体水合后形成脂质体的形态、粒径、包封率、体外吸收等各项指标,验证了这种新型前体脂质体制备方法制备齐墩果酸脂质体的可行性.结果 所形成的齐墩果酸脂质体粒径小、粒度分布均匀,包封率为(85.65±7.96)%.且包封率的大小与脂质体溶液pH、药脂比有关.pH升高,包封率增大,药脂比由5:1增加到10:1时,包封率增大.离体小肠吸收实验证明,齐墩果酸脂质体与对照组相比,可显著促进药物吸收.结论 新型前体脂质体制备方法可将齐墩果酸制成齐墩果酸脂质体,且形成的脂质体包封率较高,体外促吸收作用良好,此研究为齐墩果酸脂质体的研制奠定了基础.     

盐酸小檗碱脂质体制备与质量评价研究

目的：制备盐酸小檗碱脂质体,并对其质量进行评价。方法：采用薄膜分散-pH梯度-探头超声法制备盐酸小檗碱脂质体,测定其包封率和粒径,以透射电镜观察脂质体形态。结果：盐酸小檗碱脂质体平均粒径为（158±5）nm;盐酸小檗碱包封率为91．8％。结论：结果表明脂质体粒径均一,体系稳定。     

丹参酮ⅡA长循环固体脂质纳米粒的制备及其理化性质研究

制备丹参酮ⅡA长循环固体脂质纳米粒（TA-LSLN）并考察其理化性质。方法：以乳化，溶剂挥发法制备丹参酮ⅡA固体脂质纳米粒，测定其粒径、Zeta电位和药物包封率，以透射电镜观察纳米粒形态，考察了纳米粒的稳定性，并进行TA-LSLN的体外释放试验。结果：纳米粒平均粒径为107．6nm，Zeta电位为-34．5mV，包封率为82．3％。4℃放置1个月粒径和包封率无变化。体外释药试验表明TA-LSLN开始阶段释放较快，10h时释放了41％，之后缓慢释放；体外释药结果符合Weibull方程。结论：制备的TA-LSLN平均粒径和包封率较为理想，能使药物缓慢释放。     

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.