2.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.Wernicke's encephalopathy following allogeneic peripheral blood stem cell transplantation: report of one case and literature review
Wei SHI ; Zhaodong ZHONG ; Cuifang LUY ; Lingli ZOU ; Ping ZOU ; Yong YOU ; Yu HU
Chinese Journal of Organ Transplantation 2014;35(1):21-24
Objective To study early diagnosis and treatment of Wernicke's encephalopathy(WE) in allogeneic peripheral blood stem cell transplantation recipients.Method A 17 years old patient with acute B-lymphocytic leukemia received HLA-matched nonrelative allogeneic peripheral blood stem cell transplantation after conditioning with total-body irradiation/idamycin/cyclophosphamide (TBI/IDA/Cy) regimen.CD25 monoclonal antibody and cyclosporine A+mycophenolate mofetil + methotrexate were administrated for graft versus host disease prophylaxis.Result On the day 8,the platelet was over 20 × 109/L; On the day 10,the neutrophile granulocyte was over 0.5 × 109/L; On the day 28,full engraftment was confirmed by a bone marrow medicolegal identification.The continued nausea and vomiting after HSCT resulted in deficiency of intake and malabsorption.On the day 54,illusion and tremor occurred,and the follow-up brain MRI suggested WE,but the patient died before thiamine replacing therapy.Conclusion WE is also a rare neurologic complication of HSCT,however,it can easily be overlooked.So early radiologic surveillance and treatment for patients with WE is very important to minimize central nervous system complications and unwanted mortality.
9.Effects of HIF-1α on human gastric cancer cell's apoptosis in CO2 pneumoperitoneum environment
Yingxue HAO ; Hua ZHONG ; Dongzhu ZENG ; Yan SHI ; Yun RAO ; Lixin ZHOU ; Peiwu YU
Chinese Journal of General Surgery 2008;23(6):460-463
Objective To study the effect and mechanism of human gastric cancer cell's apoptosis in simulated CO2 pneumoperitoneum environment by HIF-1α. Methods We used a closed box to simulate CO2 pneumoperitoneum environment, a standard surgical insufflator maintained pressure of the box at 0,5,10 and 15 mm Hg respectively. MKN-45 cell's HIF-1α mRNA and protein expression were observed before and after silencing cell's HIF-1α by real time RT-PCR and Western blot. Cell's bcl-2/bax was studied by immunohistochemistry before and after silencing HIF-1α. Cell's apoptosis ratio was measured using Annexin V-FITC/PI double labelled staining. Results In 15 mm Hg group, MKN-45 cell's HIF-1α mRNA and protein expression were significantly higher than control group (P<0.01 ), while the difference was not significant among 0,5,10 mm Hg group and control group (P>0.05). In 15 mm Hg CO2 pressure, cell's bcl-2/bax was obviously lower than in control group (P<0.05) and apoptosis ratio was more than control group(P<0.01). When HIF-1α was silenced, cell's bel-2/bax and apoptosis ratio weren't significantly different between 15 mm Hg group and control group (P>0.05 ). Conclusions MKN-45 cell's apoptosis did not experience any alterations under 0,5,10 mm Hg.15 mm Hg CO2 pneumoperitoneum environment enhanced cell's apoptosis probably by way of HIF-1α.
10.Selection Pressure on Haemagglutinin Genes of H9N2 Influenza Viruses from Different Hosts
Weifeng SHI ; Aishe DUN ; Zhong ZHANG ; Yanzhou ZHANG ; Guangfu YU ; Dongming ZHUANG ; Chaodong ZHU
Virologica Sinica 2009;24(1):65-70
Positive selection and differential selective pressure analyses were carried out to study Haemagglutinin (HA) genes of H9N2 influenza viruses from different hosts in this paper. Results showed that, although most positions in HAs were under neutral or purifying evolution, a few positions located in the antigenic regions and receptor binding sites were subject to positive selection and some of them were even positively selected at the population level. In addition, there were always some positions differentially selected for viruses from different hosts. Both selection pressure working on HA codons and positions differentially selected might account for the extension of the host range and adaptations to different hosts of H9N2 influenza viruses.