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ABSTRACT:Objective To detect the expressions of thioredoxin (TRX1)and c-jun-activation-domain binding protein-1 (JAB1)in patients with acute myelogenous leukemia (AML)and healthy controls,and measure the TRX1 level in AML patients at different stages for evaluating its clinical significance.Methods The expressions of TRX1 and JAB1 in leukemia samples were analyzed by RT-PCR and Western blot at mRNA and protein levels, respectively.The correlation between TRX1 and JAB1,and the relationship between the gene expression and peripheral blood leukocytes count were also analyzed.Furthermore,serum TRX1 was measured by ELISA.Results TRX1 and JAB1 expressions at both mRNA and protein levels were obviously upregulated in leukemia patients (P<0.05). TRX1 was positively related to JAB1 in both newly diagnosed and recurrent AML patients.And high levels of TRX1 and JAB1 expressions were associated with white blood cell (WBC)counts in AML patients (P<0.05).Moreover, abundance of TRX1 in serum was significantly greater in AML patients,especially in the patients with recurrent AML,than in healthy donors (P<0.05).Conclusion There is a positive correlation between the expressions of TRX1 and JAB1 ,which is closely related to the occurrence and progression of AML.
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Objective@#To investigate hepatitis C virus(HCV)genotyping and the serum HCV-RNA concentration in patients infected with different HCV genotypes and to provide information for evaluation of disease condition and anti-viral treatment efficacy.@*Methods@#A total of 60 anti-HCV positive serum samples were collected before antiviral treatment. RT-PCR was performed for the 5′ non-cording region and was followed by nucleotide sequencing for HCV genotyping. Meanwhile, serum HCV-RNA concentration was detected by quantitative PCR. SPSS21.0 and Graphpad Prism 5.0 software were used for data analysis. Analysis of variance (ANOVA) was used for comparison among multi-groups and the t-test was used for comparison between two groups.@*Results@#The frequencies of HCV genotypes 1b, 3a, 1a and 2a were 48.3% (29/60), 23.3% (14/60), 16.7% (10/60) and 10% (6/60), respectively. And, there is one subtype 2c was detected in this study. The mean serum viral concentration with standard deviation of HCV in genotype 1a, 1b, 2a, and 3 a were 5.46±1.19, 6.22±0.78, 5.47±0.65, and 5.38±0.98 log10 (IU/ml) respectively.@*Conclusions@#The infection rate of HCV genotype 1 was significantly higher than that of genotype 2 and 3 (P<0.01). The statistical analysis showed the serum HCV-RNA concentration in patients with subtype 1b was significantly higher than that of the subtype group 1 a, 2 a, and 3 a (P<0.05). The study of the relationship between HCV genotypes and the serum HCV-RNA concentration may contribute to anti-viral treatment prescription for hepatitis C patients.
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Abatract:Objective To study the relationship of the processes of chronic hepatitis B infection with the degree of depression and the level of serum Brain-derived neurotrophic factor (BDNF).Methods 126 patients with different processes of CHB infection were divided into 3 groups,which were asymptomatic HBV carriers (ASC group),liver cirrhosis (LC group)and hepatic cell carcinoma (HCC group).40 healthy volunteers were selected as normal control.Questionnaire was used to study demographic data and the degree of depression was assessed by using Hamilton Depression Rating Scale (HAMD-17).The levels of the serum BDNF were detected by ELISA.Results The ratio of divorced or widowed in LC and HCC groups was higher than that of the control (χ2 = 6.354,11.972;P < 0.01).Severity of depression in ASC,LC and HCC groups was higher than that of the control (χ2 = 16.151,42.150,49.636;P <0.01).Severity of depression in ASC and LC group was lower than that of HCC group (χ2 = 14.345,28.772;P <0.01).The role of BDNF (x ±s,ng/ml)in ASC,LC,HCC and control group were 11.10±3.26,8.66 ± 3.11,7.39 ±2.52 and 12.18±2.59.The levels of serum BDNF in LC and HCC group was lower than ASC group and the control (P <0.01).The process of CHB infection had positive correlation with the score of HAMD (r=0.719,P <0.01),but had negative correlation with thelevels of serum BDNF (r=-0.504,P <0.01). There was negative correlation relationship between the score of HAMD and the levels of serum BDNF (r=-0.526,P <0.01).Conclusion The process of CHB infection can obviously aggravate the degree of depression,and reduce the levels of BDNF gradually.The levels of serum BDNF can be suggested as a psychological laboratory reference basis for the CHB pa-tients with depression.It is expected to improve the level of clinical diagnosis and treatment in CHB with depression.
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Objective To study the mechanism of oxidative stress involved in the pathogenesis and relapse of acute monocytic leukemia (M5 ).Methods We detected reactive oxide species (ROS)levels,conducted plasma analysis obtained from 76 M5 patients at diagnosis and at relapse,and observed the ultrastructure of mitochondria of mononuclear cells in peripheral blood by transmission electron microscope.Results Compared with that in the control group,the average fluorescence intensity of intracellular ROS was significantly increased in M5 groups, especially in the relapse patients (P < 0.05 ).Low total antioxidative capacity (T-AOC)and antioxidant enzyme activity were characteristic of M5 at both diagnosis and relapse. However, lactate dehydrogenase (LDH ), malondialdehyde (MDA)and 8-hydroxy-2’-deoxyguanine (8-OHdG)increased significantly at both diagnosis and relapse (P < 0.05 ).Prominent ultrastructural abnormalities (mitochondrial swelling,outer membrane blebs,and aberrant cristae disorder)were present in patients with primary M5,and they were obviously abnormal in relapsing M5 patients.Conclusion Oxidative stress is the initiating factor of M5.Mitochondria are the main intracellular location for ROS generation.To maintain the dynamic balance between ROS and antioxidant defence may be the critical factor for preventing relapse.
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Objective To develop a quantitative immunohistochemistry assay for duck hepatitis B virus core antigen (DHB-cAg)in duck liver tissue.Methods By comparison with no repair antigen and repair antigen with high pressure,microwave and trypsin,the best solution of antigen retrieval was determined.By optimizing the parameter of image acquisition and de-ducting blank area,mean density of yellow areas was calculated using Image-Pro Plus 6.0 software.Using the assay devel-oped to determine the level of DHBcAg in liver tissue from duck infected by DHBV,anti-DHBV activity of DHBcMAb-TAT PTD conj ugate was examined.Results SABC method with no repair antigen was selected,which was better than other methods.DHBcAg expression in duck liver tissue could be objectively and accurately quantified by setting Image-Pro Plus 6.0 software parameters and calculating mean density of yellow areas.By comparison with the differences between mean densityat baseline of treatment and end of treatment,it was showed that DHBcMAb-TATPTD conjugate treatment dose-de-pendently reduced the levels of DHBcAg in liver tissue,which show that the assay developed could effectively evaluate the anti-DHBV activity of agent.Conclusion The immunohistochemistry assay developed in this study can objectively and accu-rately evaluate the level of DHBcAg in duck liver tissue.