3.The complexes of adenovirus and anionic liposomes: preparation and in vitro characterization.
Zhirong ZHONG ; Yu WAN ; Sanjun SHI ; Zhirong ZHANG ; Xun SUN
Acta Pharmaceutica Sinica 2012;47(1):116-23
This study is to report the preparation of complexes of Ad5 and anionic liposomes (AL-Ad5), the amplification of adenoviruses with enhanced green fluorescent protein (eGFP) reporter gene performed by HEK 293 cells, the adenoviral vectors purified by cesium chloride gradient centrifugation, and the titer of adenovirus determined by cytopathic effect (CPE) method, hexon capsid immunoassay and quantitative-PCR (Q-PCR), separately. The prescription and experiment conditions were optimized by central composite design (CCD). The complexes of Ad5 and AL-Ad5 were formulated by the calcium-induced phase change method. The morpholopy, particle size and zeta potential were detected by dynamic light scattering (DLS) and transmission electron microscopy (TEM), respectively. Additionally, the bicolourable fluoresce-labeled complexes (F(labeled)-AL-Ad5) were prepared and their intracellular location in MDCK cells was detected by confocal laser scanning microscopy (CLSM). The results indicate that the complexes of AL-Ad5 exhibited a uniform distribution with a particle size of 211 +/- 10 nm and a zeta potential of -41.2 +/- 2.2 mV. The result of CLSM demonstrates that the intracellular location of red fluoresce-labeled adenovirus was consistent with that of green fluoresce-labeled liposomes suggesting that the naked adenovirus was well encapsulated by the anionic liposomes in complexes of AL-Ad5.
4.A case study of leukemia with irregular anti-Ce IgG antibody
Guoping ZHONG ; Wei SHI ; Kaimei LIAO ; Jingqin BI ; Yu SUN
Journal of Peking University(Health Sciences) 2004;0(02):-
When we did compatibility testing, we found a case of leukemia with irregular antibody. The antibody specificity was identified as anti-Ce using panel-cell, and was IgG antibody. The anti-Ce antibody had both anti-C and anti-e activity. It is very difficult to find a Ce antigen negative blood for transfusion. The compatible donors rate is very low, only 2%-3%.
5.Application and Assistance Decision of Queueing Theory in Wounded Triage on Sanitary Train
Yu CHEN ; Hanjun SUN ; Zhong SHI ; Dan HUANG ; Jianbo JING
Chinese Medical Equipment Journal 2003;0(11):-
Objective To explore optimized procedures and science decision-making methods for the triage in sanitary train and improve efficiency. Methods The work condition of triage was evaluated with queuing theory and mathematical models. Results The work of triage needs to be further optimized. The M/M/n model of queuing theory can improve efficiency, and then waiting-time that from triage site to specifically sickbed can be shorten consumedly. Conclusion The application and assistance decision on queuing theory in the triage can optimize organization plan and enhance work efficiency.
6.Varieties textual research and usage investigation of white flos gentianae, a Tibetan medicine.
Shi-Hong ZHONG ; Rui GU ; Ling MA ; Yu-Ying MA ; Yong-Zhong ZEWENG ; Yun CAO ; Cai-Hong ZHANG
China Journal of Chinese Materia Medica 2014;39(13):2450-2455
OBJECTIVETo clarity the original plants and the main application varieties of White Flos Gentianae.
METHODHerbal textual research, wild specimen collection, investigation and collection of the samples from Tibetan hospital, Tibetan pharmaceutical factory and medical material market were carried out simultaneously to identify the original plants of White Flos Gentianae.
RESULTThe results of varieties textual research and specimen identification showed that Gentiana szechenyii, G. purdomii and G. algida were in accord with the record of Tibetan herbal textual The three species above were the original plants of White Flos Gentianae. The identification of 20 batches samples showed that G. szechenyii was the main application variety. The other varieties were only used in Tibetan hospitals. All the samples above were flowering branches.
CONCLUSIONIt was necessary to strengthen the research on variety systematization of White Flos Gentianae make a further discussion on the taxonomy position of G. purdomii, G. algida and the white flos population. Its was also nessary to establish and improve the quality standard of different variety based on the principle of "one species, one name". The quality specification of White Flos Gentianae should be established and improved to standard clinical utilization and produce feeding. More study of resources investigation and cultivation of G. szechenyii should be carried on to meet the demand of produce and clinic.
China ; Drug Therapy ; Drugs, Chinese Herbal ; chemistry ; therapeutic use ; Flowers ; anatomy & histology ; chemistry ; growth & development ; Gentiana ; anatomy & histology ; chemistry ; classification ; growth & development ; History, Ancient ; Humans ; Medicine in Literature ; Medicine, Tibetan Traditional ; history ; Plants, Medicinal ; chemistry ; classification ; growth & development
8.Progress in the study of core-crosslinked polymeric micelles in drug delivery system.
Jing-Mou YU ; Jia-Zhong WU ; Xin-Shi WANG ; Yi JIN
Acta Pharmaceutica Sinica 2014;49(2):183-189
The core-crosslinked polymeric micelles were used as a new drug delivery system, which can decrease the premature drug release in blood circulation, improve the stability of the micelles, and effectively transport the drug into the therapy sites. Then the drug bioavailability increased further, while the side effect reduced. Most drugs were physically entrapped or chemically covalent with the polymer in the internals of micelles. Based on the various constitutions and properties of polymeric micelles as well as the special characteristics of body microenvironment, the environment-responsive or active targeting core-crosslinked micelles were designed and prepared. As a result, the drug controlled release behavior was obtained. In the present paper, the research progress of all kinds of core-crosslinked micelles which were published in recent years is introduced. Moreover, the characteristic and application prospect of these micelles in drug delivery system are analyzed and summarized.
Animals
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Antineoplastic Agents
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administration & dosage
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chemistry
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therapeutic use
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Cross-Linking Reagents
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chemistry
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metabolism
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Drug Carriers
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chemistry
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metabolism
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Humans
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Micelles
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Molecular Structure
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Neoplasms
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drug therapy
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Particle Size
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Pharmaceutical Preparations
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administration & dosage
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Polyethylene Glycols
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chemistry
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metabolism
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Polymers
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chemistry
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metabolism
10.Preliminary study of odor change mechanism in Crataegi fructus stir-fried process based on correlation analysis.
Liang LI ; Shi-Long YANG ; Yu-Jie LIU ; Yun-Wei WSNG ; Lian ZHONG ; Li AI
China Journal of Chinese Materia Medica 2014;39(17):3283-3286
In order to investigate the mechanism, the correlation between the odor change in Crataegi Fructus stir-fried process and 5-HMF were studied. Required samples were retrieved from Crataegi Fructus stir-fried process. Statistical quality control (SQC) was used to analyze the response values acquired by the electronic nose. At the same time, the content of 5-HMF was detected by high performance liquid chromatography (HPLC). Correlation analysis was used to analyze the relationship between the above two. Experimental results showed that SQC model established by response values of all samples could show the change law of odor in Crataegi Fructus stir-fried process and changes of 5-HMF content was dropped after the first increase. Correlation analysis showed that the odor change in Crataegi Fructus stir-fried process and 5-HMF were significantly correlated (P < 0.05). Sugar degradation reaction and the Maillard reaction may be one of the mechanisms of the odor change in Crataegi Fructus stir-fried process.
Chromatography, High Pressure Liquid
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Crataegus
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chemistry
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Furaldehyde
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analogs & derivatives
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analysis
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Hot Temperature
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Odorants
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analysis
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Plant Extracts
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analysis
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Technology, Pharmaceutical
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methods