Hepatitis B virus surface antigen with mutation on site 145 may cause omission in detection of hepatitis B virus with HBsAg diagnostic reagent. Monoclonal antibody against this mutation was obtained through hybridoma technique. The sub-class of the monoclonal antibody was determined to be IgG1(? type, the titer is 1∶9?104), and the monoclonal antibody has no cross-reaction to other hepatitis virus. The method of AC-ELISA which was established with monoclonal antibody and polyclonal antibody showed high analysing susceptibility for HBV mutant samples.

Humans ; Lymphohistiocytosis, Hemophagocytic ; Male ; Middle Aged

AIM: To determine the mycoplasma infection and the drug resistance in outpatients with NGU. METHODS: Mycoplasma culture, identification and drug sensitivity assay were carried out with samples of 472 NGU patients by using one complex mycoplasma kit. RESULTS: 153 in 472 cases showed mycoplasma positive. The total positive rate was 32.4%. The positive cases of Uu, Mh and mixed both infection were 112( 23.7%), 11( 2.3%), and 30( 6.4%), respectively. The female positive rate was found significantly higher than that of male (? 2= 4.157,P

Objective To observe bone marrow MR imaging of adult acute leukemia patients in first diagnosis and to reveal the rule of bone marrow infiltration and the role of MRI in diagnosing and predicting the prognosis of untreated acute leukemia adult patients. Methods Fifty-four adult acute leukemia patients received MRI after diagnosis relying on FAB subtype and immunophenotyping including 28 cases with AML and 26 cases with ALL. MR imaging was obtained by the short time inversion recovery and T 1W spin echo technique of pelvis and femur at one time. The examining results of morphology and blood routine were collected at the same time. 15 age-matched volunteers were selected as controls. Results MRI showed that bone marrow of all patients were infiltrated by leukemia cells. The MRI appearance was classified into five patterns based on scope of focus. MRI patters from grade 1 to grade 3 were observed in most of patients with AML and in none with ALL, however, all patients with ALL distributed in grade 4 to grade 5. The distribution of patterns had significant difference between AML and ALL (P

OBJECTIVE To investigate the clinical character of patients with severe acute pancreatitis(SAP)(infected) with deep fungal organisms and its prevention and treatment with fluconazole.METHODS Among 256(patients) with SAP,46 cases with SAP and deep fungal infection treated by fluconazole were selected as(fluconazole) treatment group,66 patients with suspicious deep fungal infection were randomized into 2 groups: fluconazole(prevention) group(42 cases) and control group(24 cases).RESULTS There were lower incidences of deep fungal(infection) in fluconazole prevention group than that in control one(P

The effects of magnolol (Mag) on hyperglycemia and hyperlipemia, hepatic oxidative stress and cytochrome P4502E1 (CYP2E1) activity of diabetic rats induced by high-fat diet (HFD) and streptozotocin (STZ) were studied. After oral administration of Mag (25, 50 and 100 mg x kg(-1) x d(-1)) for continuous 10 weeks, the blood glucose and lipids (TC, TG and LDL-C) levels, as well as the hepatic CYP2E1 activity and MDA content of diabetic rats, decreased significantly (P < 0.05 or P < 0.01), whereas the oral glucose tolerance and hepatic antioxidant enzymatic activities (CAT and GSH-Px) of diabetic rats, increased significantly (P < 0.05 or P < 0.01). The results indicated that Mag was effective against the hepatic oxidative damage, hyperglycemia and hyperlipemia of diabetic rats induced by HFD and STZ, and the inhibition of Mag on hepatic CYP2E1 activity could be an important mechanism of Mag against hepatic insulin resistance and oxidative damage.
Animals ; Biphenyl Compounds ; isolation & purification ; pharmacology ; Blood Glucose ; metabolism ; Cholesterol ; blood ; Cholesterol, LDL ; blood ; Cytochrome P-450 CYP2E1 ; metabolism ; Diabetes Mellitus, Experimental ; blood ; drug therapy ; metabolism ; Diet, High-Fat ; Glucose Tolerance Test ; Hypoglycemic Agents ; isolation & purification ; pharmacology ; Lignans ; isolation & purification ; pharmacology ; Liver ; metabolism ; Magnolia ; chemistry ; Male ; Oxidative Stress ; drug effects ; Plants, Medicinal ; chemistry ; Protective Agents ; pharmacology ; Rats ; Rats, Wistar ; Streptozocin ; Triglycerides ; blood

Objective: To investigate the correlation between the presence of a crown (CR) or a proximal restoration (PR) and furcation involvement (FI) on molars. Methods: Data were collected from 237 teeth in 44 patients who had restored and non-restored molars with or without FI.The clinical examinations were conducted on the molars including CR,PR,FI, mobility(MO), endodontic treatment(EN) and probe of periodontal attachment level(PAL). Results: Molars with CR or PR had a significantly highter percentage of FI (P0.05) when compared to molars without restorations. Conclusion: The molars with crowns or restorations involving the proximal tooth surfaces have a highter prevalence of FI and more periodontal attachment lose than molars without restorations.

Objective To develop a set of high-frequency ultrasound grayscale blood flow imaging system based on field programmable gate array (FPGA) to execute simultaneous imaging of superficial blood flow and tissues.Methods This system was mainly composed of an ultrasonic transducer,an ultrasonic transmission and receiving modules,imaging software in host computer and peripheral equipment.A PVDF transducer with the frequency between 20 and 50 MHz was used for the ultrasonic transducer.In transmission and receiving modules,the radio frequency echo signals were digitized by high-speed A/D.Then the digital signals were transmitted,added,filtered,demodulated,log amplified,double sampled,and lastly transferred to the host computer by USB interface for real-time display.Results A vascular 1 mm far form the surface of the hand skin was examined by this system.Four blood flow images were obtained in corresponding with four transmission frequencies.Conclusion Real-time superficial organ blood flow imaging is realized by this system.The solution has the architecture concise and clear,and lays an experimental foundationfor high-frequency ultrasound gray-scale blood flow imaging.

This study was aimed to use the method of modulation transfer function (MTF) to compare image quality among three different Olympus medical rigid cystoscopes in an in vitro model. During the experimental processes, we firstly used three different types of cystoscopes (i. e. OLYMPUS cystourethroscopy with FOV of 12 degrees, OLYMPUS Germany A22003A and OLYMPUS A2013A) to collect raster images at different brightness with industrial camera and computer from the resolution target which is with different spatial frequency, and then we processed the collected images using MALAB software with the optical transfer function MTF to obtain the values of MTF at different brightness and different spatial frequency. We then did data mathematical statistics and compared imaging quality. The statistical data showed that all three MTF values were smaller than 1. MTF values with the spatial frequency gradually increasing would decrease approaching 0 at the same brightness. When the brightness enhanced in the same process at the same spatial frequency, MTF values showed a slowly increasing trend. The three endoscopes' MTF values were completely different. In some cases the MTF values had a large difference, and the maximum difference could reach 0.7. Conclusion can be derived from analysis of experimental data that three Olympus medical rigid cystoscopes have completely different imaging quality abilities. The No. 3 endoscope OLYMPUS A2013A has low resolution but high contrast. The No. 1 endoscope OLYMPUS cystourethroscopy with FOV of 12 degrees, on the contrary, had high resolution and lower contrast. The No. 2 endoscope OLYMPUS Germany A22003A had high contrast and high resolution, and its image quality was the best.
Diagnostic Imaging ; instrumentation ; Endoscopes ; Endoscopy ; instrumentation ; Software

STUDY DESIGN: Changes of morphology and phenotype of cultured cells in media added lactate were observed. OBJECTIVES: To evaluate the effect of lactate on morphology and phenotype of cultured intervertebral disc cell. SUMMARY OF LITERATURE REVIEW: It was reported that lactate and pH were important factor in the degeneration of intervertebral disc. However the effect of lactate on morphology and phenotype of cultured intervertebral disc cell have not been studied. MATERIALS AND METHODS: Cells were dissociated enzymatically from rabbit nucleus pulposus. After attaining monolayer growth, the cells were incubated in media added 2mM or 5mM lactate. Total cell counts and morphological changes of the cells were periodically observed. Changes in cell phenotype were investigated by use of anti-collagen antibody stain. RESULTS: The cell groups added no lactate and 2mM lactate showed no difference in cell counts, morphology and phenotype. The cell group added 5mM lactate showed a reduction in final cell Counts and highel'ratio of fibroblastic cell in total population. Anti-collagen I Ab stained the Intra-and extra-cellular area of fibroblastic cells and intracellular area of chondrocytic cells. CONCLUSIONS: The current study suggests that high concentration of lactate inhibit intervertebral disc cell proliferation and accelerate morphological and phenotypical change to fibroblastic cell.
Cell Count ; Cell Proliferation ; Cells, Cultured ; Fibroblasts ; Hydrogen-Ion Concentration ; Intervertebral Disc* ; Lactic Acid* ; Phenotype*