Studies of the effects of Dihydroartemisinine (DHA) on the central nerves of mice and rats, with 50mg/kg/day doses on rats, and 100mg/kg/day doses on mice, by orally administration, in 5 days terms, 3 terms, 3 terms successive and 3 days distant. Results showed that DHA had no effects on the rates of reflex formations, times of reflex extinction of rats as well as on finding- foods-in-labyrinth conditioner reflex of white mice
Pharmaceutical Preparations ; Reflex

New method of treatment of trigeminal neuralgia by percutaneous injection of boiling saline into the cavum trigeminale in replacement of the former Frazier’s operation. 71 cases with aged of 20-80 in which 69 cases the territories of the 2nd and the 3rd division of the 5th nerve were involved. The technique of the procedure is described in detail. It did not require stereotactic facilities or X-rays control of the position of the needle during its introduction intothe Meckel’s cave through the Foramen Ovale. One or two injections of 2 ml of boiling saline were necessary for an instant relief of pain. The major complications, well accept by the patients were: hypoesthesia of the affected hemiface and motor hemiparalysis of muscles of mastication, but in a lot of patients they were improving or subsided with the passing of time
Trigeminal Neuralgia ; Administration, Cutaneous ; therapeutics ; Sodium Chloride

Steam distillation of fresh roots, small rhizomes, large rhizomes, stems and leaves of Curcuma elata Roxb (Zingiberaceae) produced oils in yields of 0.25%, 0.26%, 0.34%, 0.02%, 0.19% repectively. The oils were analyzed by high resolution GC and GC/MS. Among the more than 40 compounds identified in the stem and leaf oils-pinene (9.1% and 9.7%) 1.8-cineole (17.8%; 21.9%) and humelene (7.5% and 6.7%) we found predominatly. The oils of the roots, small rhizomes and large rhizomes contained great amounts of oxygenated terpenes such as ar-curcu-mene (22.3%, 26.7% and 25.4%),  bisabolene (14.7%, 16.9% and 15.9%) and cuzerenone (20.6%, 13.9% and 12.0%). The oxygenated compounds contribute to the special odor of these oils.
Oils, Volatile ; Plant Roots ; Rhizome

Cross-sectional study in combining with data retrospective data and unterview has determined higher levels of pollution than permissible standard: dust: 2.8mg/m3 (total dust), 1.4mg/ m3 respiratory dust, SiO2 level in dust: 15.5% - 19.6%. 43.32% of worker felt uncomfortably with higher level of dust at workplace. NO2 poisonous gas was 6.47mg/ m3 and SO2: 5.14mg/m3 – higher than permissible standard. Noise had got maximal level 98.7dBA – higher than permissible standard. Therefore, 59.06% of workers demanded an improved labour condition, 66.14% demand a strengthening of labour protection equiments and facilities.
Environmental Pollution ; Environment ; Air Pollution ; Dust ; Noise

A retrospective surveyed was conducted on the plant of concrete with 127 workers. The secondary data about the health, the clinical and paraclinical diagnosis realized on all workers. Analysis showed that the second grade of health accounted for 40.94%, 3rd grade 49.62%, none of 1st grade and 4th grade 1.57%. A diversity of morbid included ENT diseases, maxial-odonto-facial diseases, gynecological diseases, ophtalmological disease, gastrointestinal diseases, muscle-bone-joint diseases, venerological, mental-neurological, respiratory, urological, cardiovascular diseases. 2 cases of occupational pneumocomosis were detected.
Epidemiology ; Health ; Retrospective Studies ; Diagnosis

Background: Ovarian stimulation is an important process in IVF. Objectives:To assess the efficacy of low dose GnRH agonist depot in combination with recombinant FSH for ovarian stimulation in IVF and evaluate the clinical pregnancy rate of this protocol. Subject and method: A prospective study recruited 60 patients undergoing IVF. The patients was injected intramuscularly with a single dose of diphereline of 1.25 mg on cycle day 21-23. Then recombinant FSH was given subcutaneously on day 3. hCG was injected intramuscularly when at least one follicle reached 18 mm in diameter. Oocytes retrieval in 36 hours and embryo 2 transfer on day after oocytes retrieval. Results: Duration of stimulation was 10.8 \xb1 0.9, average number of oocytes was 3.3 \xb1 4.7, average number of embryos was 6.5 \xb1 4.1, clinical pregnancy rate was 41.7%. Ovarian hyperstimulation rate was 5%, frozen embryo rate was 40 %. Conclusions: The use of low dose GnRH agonist depot in combination with recombinant ISH is effective for ovarian stimulation in IVF.
In vitro Fertilization (IVF) ; Ovarian stimulation ; Oocytes retrieval ; Embryo transfer ; GnRH agonist

Background: Hepatitis B is an infectious illness caused by hepatitis B virus (HBV) which infects the liver of hominoidea, including humans, and causes an inflammation called hepatitis. Objectives: The aim of study is to clarify clinical features and molecular characteristics of HBV in chronic HBV-infected patients with A 1899 mutation. Subjects and method: HBV genotype, HBV-ONA level, HBeAg and anti-HBe in 29 chronic HBV-infected patients were determined by PCR-RFLP, Real-time PCR and ELISA, respectively. Mutations were analyzed by direct sequencing. Results: Mutations in core-promoter/precore regions of HBV genome can suppress HBeAg secretion and stimulate HBV-ONA replication. The prevalence of hepatocel- lular carcinoma (HCc): 10/29, liver cirrhosis (LC) : 15/29 are significantly higher than that in chronic hepatitis (CH) : 4/29 (P < 0.001). HbeAg seroconversion rate in CH (75%) is higher than that in HCC \r\n', u'(40%) and in LC (53.3%), but not significant (P > 0.05). ALT level is the highest in CH and the lowest in HCC \r\n', u'(P = 0.02), 8/10 (80%) HCC patients have normal range of ALT. HBV-ONA level in HCC and in LC is significantly higher than that in CH (P = 0.024). The emerging of A 1899 is often accompanied by C/G1753 mutation (37.9%) and dual core-promoter mutation T1762A1764 (79.3%). Conclusion: A1899 mutation can play a role in the pathogenesis of liver diseases in chronic HBV-infected Vietnamese.\r\n', u'
Hepatitis B virus/ growth & ; development ; physiology ; Hepatitis B ; Chronic/ pathology ; transmission

Objectives: Vibrio parahaemolyticus is a major foodborne pathogen in aquatic animals and a threat to human health worldwide. This study investigated the prevalence, antimicrobial resistance, antimicrobial resistance genes (ARGs), and biofilm formation of V. parahaemolyticus strains isolated from fish mariculture environments in Cat Ba Island, Vietnam. Methods: In total, 150 rearing water samples were collected from 10 fish mariculture farms in winter and summer. A polymerase chain reaction assay was used to identify V. parahaemolyticus, its virulence factors, and ARGs. The antimicrobial resistance patterns and biofilm formation ability of V. parahaemolyticus strains were investigated using the disk diffusion test and a microtiter plate-based crystal violet method, respectively. Results: Thirty-seven V. parahaemolyticus isolates were recovered from 150 samples. The frequencies of the tdh and trh genes among V. parahaemolyticus isolates were 8.1% and 21.6%, respectively. More than 90% of isolates were susceptible to ceftazidime, cefotaxime, and chloramphenicol, but over 72% were resistant to ampicillin, tetracycline, and erythromycin. Furthermore, 67.57% of isolates exhibited multidrug resistance. The presence of ARGs related to gentamicin (aac(3)-IV), tetracycline (tetA) and ciprofloxacin (qnrA) in V. parahaemolyticus isolates was identified. Conversely, no ARGs related to ampicillin or erythromycin resistance were detected. Biofilm formation capacity was detected in significantly more multidrug-resistant isolates (64.9%) than non-multidrug-resistant isolates (18.9%). Conclusion Mariculture environments are a potential source of antibiotic-resistant V.parahaemolyticus and a hotspot for virulence genes and ARGs diffusing to aquatic environments. Thus, the prevention of antibiotic-resistant foodborne vibriosis in aquatic animals and humans requires continuous monitoring.

Background: Vietnam is located in the endemic region of hepatitis B virus (HBV) infection, but no data of occult HBV infection was reported at present. Objectives: To investigate the prevalence of occult HBV infection in different ethnics of people and generations. Subjects and method: 80 voluteers with HbsAg negative from five different ethnics: Kinh, Tay, Mong, Giay and Dao in a Chino \ufffd?Vietnamses border province (Lao Cai) were enrolled in the study. After HBV-DNA was extracted, nested PCR of S gene and of Core-promoter/Pre-core region were used to detect HBV-DNA. Specifying nucleotide sequence was confirmed by direct sequencing. Results:The prevalence of occult HBV infection in population study was very high 73/80 (91,3%) by nested PCR of Core-promoter/Pre-core, significantly more sensitive than nested PCR of S gene (26,3%) (p<0,0001). The prevalence of occult HBV infection was notdifferent between ethnics of people or between children, adults. Conclusion: Occult HBV infection in Vietnamese is very common; however, nationwide further studies should be carried out to confirm this preliminary results and evaluate the impact of occult HBV infection in Vietnam.
Hepatitis B virus ; Hepatitis B Surface Antigens ;

Background: Hepatocellular carcinoma (HCC) is the most common primary hepatic tumor and one of the most common cancers worldwide. HCC is a primary malignancy of hepatocellular origin. Objectives:The aim of study is to combinate therapy of transarterial chemoembolization and percutaneousethanol injection afterward emerging metatasis caused by fine needle aspiration cytology. Subjects and method: A 50 years old male patient with hepatocellular carcinoma having a diameter of tumor more than 5 cm was treated by combination of transarterial chemoembolization and percutaneous ethanol injection from December 2000. Results & Conclusion: Results of study showed that: Transarterial chemoembolization and percutaneous ethanol injection are the two of non-surgical methods for treatment of hepatocellular carcinoma which are most commonly available in applied clinical activities at present. Up to now, the patient's life expectancy after therapy is more than 6 years that means the result of treatment is very good. However, the emerging metatasis into the anterior-right-Iower chest wall that was caused by fine needle aspiration cytology should be reviewed for further evaluating clinical experience, especially in cases with quite clear imaging features of untrasonography and significantly elevated AFP level higher than 200 ng/rnl.
Carcinoma ; Hepatocellular/ pathology ; therapy