6. Monosaccharide composition analysis on polysaccharides in Polygonatum cyrtonema by high performance anion-exchange chromatography with pulsed amperometric detection
Chinese Traditional and Herbal Drugs 2017;48(8):1671-1676
Objective: To develop a method for determination of monosaccharide composition of Polygonatum cyrtonema polysaccharides (PCR) by high performance anion-exchange chromatography with pulsed amperometric detection (HPAEC- PAD). Methods: The water-soluble crude polysaccharides were extracted from the P. cyrtonema Hua, then the polysaccharides were hydrolyzed with sulfuric acid, then separated by CarboPac PA1 column (250 mm × 4 mm, 10.0 μm) and with gradient elution, determination of monosaccharide composition in PCP by HPAEC-PAD. Results: The results showed that within the range of 1-100 mg/L it has good linearity (r > 0.999), The detection limitation was 0.015-0.025 mg/L, 1.35%-2.80% RSD, the recovery rates were 88.36%-111.3%. The results showed that the polysaccharides in P. cyrtonema Hua from different regions were composed of rhamnose, arabinose, galactose, glucose, mannose, and fructose. Conclusion: The proposed method has good separation effect and high sensitivity, which can be used for the study on monosaccharide composition and content determination of PCP.
7.PRELIMINARY STUDY ON MONOCLONAL ANTIBODIES AGAINST CYSTICERCUS CELLULOSAE
Shuhong LI ; Jun DU ; Jianan LIAN
Chinese Journal of Parasitology and Parasitic Diseases 1987;0(01):-
In order to produce valuable monoclonal antibodies for immunodiagnosis of cysticerco-sis, hybridoma technique was adopted using the fusion of splenic lymphocytes from BALB/c mice immunized with Cysticercus cellulosae antigens and the myeloma cell line NS-1. Through screening and cloning, three monoclonal antibody cell lines have been established. Im- munoglobulin subclasses of 3 lines were determined to be IgGl. These monoclonal antibodies were found to be highly specific and without cross reaction with Echinococcus granulosus hy-datid cyst and Cysticercus fasciolasis. Antigen fractions specifically reacting to monoclonal antibodies were demonstrated with Western blot method. The results showed that specific reaction bands of SCW located in 25 kDa and 17 kDa regions.
8.Combining chemotherapy and TCM recipe “Xiao Zheng Fang” for advanced colorectal cancer
Weiping WANG ; Qiang LIAN ; Jun ZHANG ;
China Oncology 2000;0(06):-
Purpose:To explore the therapeutic effects of combining chemotherapy and TCM recipe “Xiao Zheng Fang” for advanced colorectal cancer.Methods:A prospective and comparable clinical study was made in 85 cases of advanced colorectal carcinoma seen over 6 years , Who were not suitable for radical operation or had metastases after operation. Survival time,life quality, objective effect and blood flow rate indexes were studied and analysed. Results:Integrated therapy of tranditional Chinese and Western medicine is superior to chemotherapy alone in life quality ( P
9.Comparison of effect of different dose of dexmedetomidine on postoperative analgesia and sedation
Qicheng WU ; Jun FANG ; Yanhong LIAN
Chinese Journal of Primary Medicine and Pharmacy 2017;24(3):365-369
Objective To compare the effects of different doses of dexmedetomidine on postoperative analgesia and sedation.Methods From January 2014 to November 2015,60 cases who needed postoperative analgesia and sedation in our hospital were selected.According to the dosage of dexmedetomidine,they were divided into control group and observation group,30 cases in each group.Two groups of patients were given analgesia pump for analgesia, with 0.5μg·kg-1·h-1,1.0μg·kg-1·h-1 two doses of dexmedetomidine,and analgesia 48 h.At different time points,the VAS pain score,Ramsay sedation score of the two groups were compared,the calm satisfaction in both two groups was recorded,the average incidence of delirium and delirium score in the process of the treatment and the occurrence of adverse reactions were observed.Results With the extension of time of postoperative analgesia,VAS scores in each group decreased,VAS scores in the observation group after 4h,8h,12h were (3.01 ±0.53)points, (1.95 ±0.58)points,(1.52 ±0.35)points,which were lower than those of the control group[(3.92 ±0.32)points, (2.86 ±0.67)points,(2.25 ±0.78)points],the differences were statistically significant (t=3.42,4.11,2.43,all P<0.05).After 24h,48 h,VAS score between the two groups had no significant difference(P>0.05).Postoperative 4h Ramsay score between the two groups had no significant difference (P >0.05 ).With increased postoperative analgesia time,Ramsay scores in two groups decreased,postoperative 8h,12h,Ramsay scores in the observation group [(2.95 ±0.83)points,(2.22 ±0.55)points]were lower than the control group[(3.76 ±0.78)points,(2.98 ± 0.89)points,t=3.45,2.38,all P<0.05].Postoperative 24h,48 h,the Ramsay scores between the two groups had no significant difference(P>0.05).The sedation satisfaction of the observation group (96.67%)was higher than the control group (86.67%),the incidence rate of delirium and delirium average score [3.33%,(15.11 ± 2.03)points]were lower than the control group[13.33%,(19.23 ±2.21 )points],the differences were significant between the two groups (t =4.32,4.32,3.27,all P<0.05 ).After treatment,the adverse reactions were mainly bradycardia,nausea,vomiting,drowsiness,respiratory depression,urinary retention.The overall incidence rate of adverse reactions between the two groups had no significant difference (P >0.05 ).Conclusion The effect of 1 .0μg·kg-1 · h-1 concentration dexmedetomidine within 24h of postoperative analgesia sedative is best,it can reduce the incidence of postoperative delirium,and without obvious drug side effects.
10.Construction of linker for activation of T cells gene eukaryotic expression vector in mouse
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(02):-
Objective To construct the eukaryotic expression vector of linker for activation of T cells(LAT) gene in mouse. MethodsLAT cDNA of mouse mononuclear cells was amplified with polymerase chain reaction.The fragment was inserted into the eukaryotic expression vector of pCMV-HA plasmid.The recombinant plasmid was verified by DNA sequencing and used to transfect lymphocytes of the asthmatic model. Results The length of amplified fragment was 729 bp.The sequence of LAT gene was confirmed by Genbank.The LAT protein could be detected in the lymphocytes of asthmatic model.Conclusion The recombinant eukaryotic expression vector pCMV-HA-LAT can be successfully constructed.