Green tea is one of the most widely consumed beverages in Vietnam. Polyphenol in green tea possess biological effects such as antitumoral, anticarciogenic, anti-inflammatory and reduce the risk of cardiovascular disease by increasing the plasma antioxidative capacity in human. Lipid peroxidation and oxidative modification of low-density lipoprotein have been implicated in human atherosclersis. Green tea extract with doses of 100 mg, 150 mg/kg body weight/day reduced levels of MDA plasma and injury of aortic atherosclerosis
Atherosclerosis ; Plant Extracts ; Tea

Study on 41 pharmaceutical companies in Hanoi city from March 1999 to February 2000. The results: there was an average of 46 pharmaceutical companies of sixteen countries bought the biding documents and about 43% of those companies submitted the bid documents. At each International Competitive Bids, the average of prices of pharmaceutical drugs were correlative with that announced by UNICEF, however, there was still a case of the mean prices of pharmaceutical drugs were higher than that announced by UNICEF. The prices of pharmaceutical drugs were considered lowest, lower than the average of prices of similar products, which were imported into the Vietnam market and announced by UNICEF
Pharmacy ; Pharmaceutical Preparations

Studying the effectiveness of irradiation on bone-marrow, the numbers of leukocyte, erythrocyte, hemoglobin of mice (25 normal mice and 35 mice treated by gamma irradiation with the dose of 600 rad/(100rad/day) (60 Co) showed that: Gamma irradiation reduced total of leucocytes, the number of different leucocytic (lymphocyte, granulocyte, mono and natural killer cells), the ratio of reticulocyte, number of mature erythrocyte and hemoglobin: Total of leucocytes (3,14 ± 1,58 in comparison with 13,45 ± 4,6); monocytes (0,05 ± 0,03 in comparison with 0,26 ± 0,13), lymphocytes (1,66 ± 0,36 in comparison with 6,34 ± 2,84). After gamma irradiation, the number of reticulocyte was 55%, mature erythrocyte was 73% and hemoglobin was 82%
Therapeutics ; Mice

Study on white mices with age of 6-8 weeks, 18-20g body weight. They were divided into 3 groups: group 1 (control group): 30 mices; group 2: mices were immunesuppressed by 200mg cyclophosphamid per one kilogram of body weight, being checked after 5 days of injection; and 300mg cyclophosphamid per one kilogram (200mg on the first day and 100mg on the fifth day) and it was checked after 10 days of injection (group 3). The results: immunesuppressed model implemented by intraperitonial injection of 200mg per one kilogram of body weight checked after 5 days of injeciton. These parameters were used to assign the immune function
Immunosuppressive Agents ; Mice ; Animal Experimentation ; Cyclophosphamide

Heterogenous transplantation of skin was studied on two strains of mice BALB/C and Swiss.The subjects were divided into various groups :normal group, cyclophosphamid (CP) inhibited group, cyclosporin A (CPA) inhibited group, and the group processed with DY1. The onset of reject phenomenon of the graft and the completed reject of the graft in the groups of mice using CP, CPA and DY1 were more delayed in comparing with the controlled subjects. The cell numbers decreased and the percentage of transformed cells also decreased in all groups using CP, CPA and DY1
Skin Transplantation ; Mice ; Cells

Outline on the antibiotic resistance of Streptococcus pneumoniae isolated during 1989-1995 in Viet Nam based on the data of antimicrobial susceptibility tests of NIHE and ASTS project. Comparing to the data from countries in South East Asis/India we found that: Str.pneumoniae is still susceptible to benzylpenicillin. B-lactams, macrolides, chloramphenicol. In many countries the reported incidence of drug-resistant Str.Pneumoniae has increased in the last year. The frequency and patterns of resistance vary in different geographic regions, countries and over different periods.
Drug Resistance ; Streptococcus pneumoniae

Green tea infusion is one of the most popular drinks in many countries, especially in ASIA countries such as Japan, China and Vietnam. Green tea has been mounting regarding the anticancer, antiviral, antioxidant.
polyphenols ; green tea extract AR25 ; Plants, Medicinal

The diabetic patients are usually suffered from oxidation stress. Green tea is one of the good herbal medicines has been used for treatment of some diseases. Objectives: Evaluate change of antioxidant status in blood and effect of the green tea polyphenol on this change in the experimental diabetic rats. Methods: Using in vivo model to investigate some biological indicators in STZ - induced diabetic rats fed with high fat diet and to evaluate effect of the green tea polyphenol on the changes of these indicators. Results: Erythrocyte GPx activity and serum MDA concentration in STZ - induced diabetic rats was higher than that of normal and lipid metabolism disorder groups (p < 0.001) and effected of the green tea polyphenol. However, no change in erythrocyte SOD activity and plasma TAS level was observed. Conclusions: Green tea polyphenol improved blood antioxidant status in STZ - induced diabetic rats.
Diabetes Mellitus ; Tea ; Camellia sinensis ; Blood ; Oxidants

By the technique of indirect immunofluoresceine using 18 diverse markers, in the hospital K- Ha Noi, study was performed to determine the capacity of foreign antigene expression of tumor cells in the cell surface making them identified by immunology system through HLA system on NPC < 75 years old age patients. This system played an essential role in the regulation and realization of immune response.
Carcinoma ; Nasopharyngeal Neoplasms ; Nasopharyngeal Diseases ; Diagnosis

In this study, 48 long-term exposed people with polychemicals (the male/female ratio is 1/3, the age from 23 to 44): such as organic and iso-organic acids: benzene, toluene and their coequals were investigated. 17 normal people not exposed with polychemicals as the control group. Results were shown following: quantity of erythrocyte was lower than control group but not significantly. Leucocytes especially neutrophils reduced significantly (p<0.001). 15/48 cases (30%) appereared lymphoblast. There is no difference in platelet between studied group and control group
Chemistry ; Diagnosis ; Erythrocytes ; Blood Platelets