Objective To establish a reversed HPLC method to determine the contents of gatifloxacin and tinidazole simultaneously. Methods ODS C_ 18 column (4.6mm?250mm,5?m) was used as an analytical column. The mobile phase consisted of 15% acetonitrile, 25% of methanol and 60% of 0.05mol/L KH_2PO_4 buffer,which contained 0.5% triethylamine and was adjusted to pH 3.5 by phosphoric acid. The flow rate was 1ml/min. The detection wavelength was 318nm. The column temperature was 30℃. 20?l of diluted sample solution was injected to the sampler. Results The calibration curve of gatifloxacin was linear in the range of 2~20?g /ml (r=0.999 6) ,and that of tinidazole was 2~20 ?g /ml (r=0.999 9). The recovery rates of them were 100.1% and 100.4%,respectively. RSDs of both drugs were less than 1.1 %. Conclusions The method is simple,accurate and sensitive and can be used to determine the two components simultaneously.

China ; epidemiology ; Disease Notification ; standards ; Epidemiologic Methods ; Humans ; Models, Statistical ; Occupational Diseases ; epidemiology ; prevention & control ; Occupational Health Services ; statistics & numerical data ; Registries ; Wounds and Injuries ; epidemiology ; etiology ; prevention & control

Objective To analyze the clinical profiles of lupus mesenteric vasculitis (LMV).Methods Thirty-six SLE patients diagnosed with LMV and 72 SLE patients (1:2) without LMV at West China Hospital between October 2009 and January 2012 were enrolled.The imaging,clinical manifestation,laboratory examinations data were analyzed retrospectively.Quantitative differences were analyzed by the Student's t and Z tests and qualitative data were compared with Chi-square.P value less than 0.05 was considered as statistically significant.Results ① The prevalence of LMV in patients with SLE was 1.2％(36/3 051),while 47％(17/36) as the initial symptom of SLE.Thirty-six LMV patients were all female.The prevalence of abdominal pain was 78％(28/36),nausea or vomitting was 58％(21/36),abdominal distension was 50％(18/36),diarrhea was 47.2％ (17/36),intestinal perforation was 3％ (1/36) and incomplete obstruction was 8％ (3/36).Enhanced CT scan showed 81％(25/31) patients suffered from intestinal dilation and (or) mesenteric edema;SLEDAI (17±5),C3 (0.44±0.25) g/L,C4 (0.10±0.09) g/L,Z value on above items were 4.30,-3.85 and-2.94 respectively compared to SLE patients without LMV,and all P＜0.05,the differemces were significant.In addition,Also,the proportion of ANA and anti-ENA antibody showed no significant difference.68.6％(13/36) patients were also diagnosed with lupus nephritis;61％(22/36) patients were treated with methylprednisolone more than 200 mg/d resulting in relief of symptom.Conclusion Female patients with SLE may be more likely to suffer from LMV;Enhanced abdominal CT scan is still essential to the diagnosis of LMV.LMV is correlated with urinary system malfunction.LMV always occurs in active lupus with low C3 and C4 level.More than half patients should be treated with corticosteroid and cyclophosphamide pulse therapy.

Objective:To discuss the changes of peripheral blood T Lymphocyte subsets in patients with chronic HBV infection to know the relation between T Lymphocyte subsets and HBV replication and the relationship between T Lymphocyte subsets and activity of liver cirrhosis.Methods:Peripheral blood lymphocytes were analysed by flow cytometry in 99 patients with chronic HBV infection.Results:The T Lymphocyte subsets counts were marked higher in patients with chronic active hepaitis B than those in patients with liver cirrhosis.CD4+/CD8+ ratios were significantly higher in active cirrhosis than those in non-active cirrhosis(P

Objective To evaluate the values of CD64 expression in diagnosis of infected patients referred to intensive care unit.Method Sixty febrile children referred to the hospital intensive care unit from 2009.11 to 2010.03 were enrolled for a retrospective study.Fever was defined as a body temperature reaching 38℃ or higher with specifically bacterial infection or highly suspected with bacterial infection or viral infection.There were 28 patients with bacterial infection and 32 with viral infection.The non-infectious diseases such as juvenile rheumatoid arthritis and Kawasaki disease were excluded.The controls were 50 healthy children asking for physical examination.On admission,CD64 were measured by using flow cytometry,and blood routine examination,ESR,PCT,blood cultures and sputum cultures were simultaneously detected in all febrile patients.Data were statistically analyzed by using SAS 16.0 software.Data are given as means±SE.Categorical variables were analyzed using X2 test and continuous variables were compared by applying paired 1-tailed t test,Significance level was set at less than 0.05.Results of them,57.1%bacterial infection patients and 71.9%viral infection patients contracted pneumonia.CD64 in bacterial infection patients、viral infection patients and the subjects of control group were(12.6±9.7),(5.4±2.42)and (2.9±0.77),respectively.The CD64 in the bacterial infection patients were significantly higher than those in the virus infection patients(F=11.002,P=0.004).Conclusions CD64 in infected children referred to a hospital intensive care unit can be clearly distinguished between bacterial infections and viral infections, providing an important guidance and a flexible strategy for clinical treatment and determine the timing of withdrawal.

Air Pollutants, Occupational ; analysis ; Carbaryl ; analysis ; Chromatography, High Pressure Liquid ; methods ; Workplace

Adolescent ; Child ; Female ; Humans ; Parotid Diseases ; pathology ; Parotid Gland ; pathology ; Recurrence

Objective To explore the clinical manifestation,imaging features,histopathological classifications and treatment of primary orbital tumors.Methods Twenty-six cases with primary orbital tumors were retrospectively studied.Results All of 26 primary orbital tumor cases received surgical treatment.Sixteen primary orbital tumors cases were male and 10 cases were female.The mean age was 46 years (ranged from 15 to 72).The mean hospital stay was 13 d (ranged from 9 to 21).Among 26 primary orbital tumors cases,21 cases were benign tumors which included 11 cases of cavernous hemangioma,5 cases of inflammatory pseudotumor,3 cases of dermoid cyst,2 cases of venous angioma.Five cases were malignant tumors which included 4 cases of adenoid cystic carcinoma and 1 case of rhabdomyosarcoma.After operation,visual acuity improved in 9 cases,unchanged in 11 cases,decreased in 6 cases.The patients were followed up for 18-48 months (mean,25 months).There were 4 cases of malignant tumors recurrence after operation and received radical operation.While 2 patients were lost,the other 24 patients survived with tumor-free.Conclusions Surgical excision is the main and effective treatment for primary orbital tumors.To be very familiar with the imaging characteristics and local anatomy is the key for operation.Individualized treatment plan should be chosen based on clinical manifestation,imaging features and histopathological classifications.

In this research, the zuelacmycin-producing strain Streptomyces venezuelaevar. qinlingensis RL-2 was used as original strain, the spore suspension of which was induced by UV, LiCl and the compound treatmeat (UV+LiCl) respectively. The zuelacmycin-high-yield strain UVL-108 was obtained by the treatment that the exposure time under UV irradition was 45 s and the concentration of LiCl was 0.4%. The heredity characters of mutant UVL-108 were stable in succesive six generations. The antibacterial activity and the fermentation titer of mutant UVL-108 were determinded by bidirectioned culture and mycelial linear growth respectively. The results demonstrated the antibaterial activity of mutant UVL-108 was improved by 77%, and the relative toxicity of fermentation to Phyricularia grisea was improved by two times compared with the original strain.

The study provide a theoretical basis for the industrial production of a elastase-high-yield strain which was isolated from the straw,and the selected strain was identified. The screening strategy included casein(skim milk) plate selecting and elastin(beef tendon) re-screening. And then,the morphological,physiological and biochemical characteristics as well as 16S rRNA sequence homology of the selected strain were studied. Finally,the strain LSF-97 which had a excellent decomposing ability to beef tendon was obtained. The results showed that the strain LSF-97 is relative to the Bacillus pumilus with 100 % similar in sequence under the phylogenetic tree,the morphological and physiological and biochemical characteristics are also consistent with pattern of bacteria. So it was identified as Bacillus pumilus.