Role of HIV-1 envelope protein gp120 in neuronal injury-induced cognitive impairment / 中华微生物学和免疫学杂志

Objective To investigate the role of HIV-1 envelope protein gp120 in cognitive im-pairment induced by neuronal damage. Methods Western blot and immunofluorescence assay were used to detect microglia activation, inflammatory factor expression and neuronal damage after gp120 treatment. Neu-ronal damage and neurocognitive performance in gp120-transgenic mice were evaluated using immunohisto-chemical staining and behavioral analysis, respectively. Results In vivo and in vitro experiments showed that HIV-1 gp120 significantly induced the expression of caspase-1 and IL-1β, and indirectly caused neuro-nal synaptic shortening and neuronal damage (P<0. 05). Compared with wild-type mice, gp120-transgenic mice showed significant cortical and hippocampal glial activation, neuronal loss, dendritic damage and neu-rocognitive disorders. Conclusions HIV-1 gp120 might cause neuronal damage through activating the re-lease of inflammatory factor by microglia and involve in neurocognitive impairment.

Establishment of a vimentin knockout and HIV-1 gp120 transgenic mouse model / 南方医科大学学报

OBJECTIVE@#To construct a HIV-1 gp120 transgenic mice (gp120 Tg) with vimentin (VIM) gene knockout.@*METHODS@#Female HIV-1 gp120 Tg mice were mated to VIM heterozygote mice (F0). All the offspring mice were derived from these original founders so that both genotypes had the same mixed genetic background. The F1 mice were bred to generate of VIM, VIM, VIM/gp120 Tg and VIM/gp120 Tg mice. PCR was performed for genotyping of the mice, and the expressions of VIM and gp120 in the brain tissues were examined using immunoblotting.@*RESULTS@#The results of PCR showed the presence of the target bands in VIM, VIM, VIM/gp120 Tg and VIM/gp120 Tg mice. In VIM/gp120 Tg mice, gp120 expression was detected throughout the brain regions while no VIM expression was detected.@*CONCLUSIONS@#We generated gp120 transgenic mouse models with VIM gene knockout, which facilitate the exploration of the role of VIM in gp120-induced neurotoxicity.

Role of HIV-1 envelope protein gp120 in neuronal injury-induced cognitive impairment / 中华微生物学和免疫学杂志

Objective@#To investigate the role of HIV-1 envelope protein gp120 in cognitive impairment induced by neuronal damage.@*Methods@#Western blot and immunofluorescence assay were used to detect microglia activation, inflammatory factor expression and neuronal damage after gp120 treatment. Neuronal damage and neurocognitive performance in gp120-transgenic mice were evaluated using immunohistochemical staining and behavioral analysis, respectively.@*Results@#In vivo and in vitro experiments showed that HIV-1 gp120 significantly induced the expression of caspase-1 and IL-1β, and indirectly caused neuronal synaptic shortening and neuronal damage (P<0.05). Compared with wild-type mice, gp120-transgenic mice showed significant cortical and hippocampal glial activation, neuronal loss, dendritic damage and neurocognitive disorders.@*Conclusions@#HIV-1 gp120 might cause neuronal damage through activating the release of inflammatory factor by microglia and involve in neurocognitive impairment.

Clinical analysis of the inconsistency of antineutrophil cytoplasmic antibodies test results between indirect immune fluorescence and enzyme-linked immunosorbent assay in 589 cases / 中华风湿病学杂志

Objective To analyze the clinical significance and features of patient s' with inconsistent antineutrophil cytoplasmic antibodies (ANCA) test results between indirect immune fluorescence (IIF) and enzyme-linked immunosorbent assay (ELISA).Methods ANCA were detected with IIF and ELISA method jointly among 12 386 in-patients and a retrospective analysis on the proportion of clinical features and significance was made in 589 cases with inconsistent results using Microsoft Excel 2007 statistical software.Results Among the 589 patients,68 (11.5％) were diagnosed as vasculitis,in which 51 cases as ANCA-associated vasculitis,and 521(88.4％) were diagnosed as non-vasculitis including 181 connective disease and 340 non-connective diseases in which hypertension and cardiopathy were common.The common inconsistent results of ANCA were p-ANCA/ELISA (-),IIF (-)/anti-MPO (+),IIF (-)/anti-PR3 (+),IIF (-)/anti-PR3 (+) anti-MPO (+) accounted for 24.4％ (144/589),29.5％ (174/589),15.9％ (94/589),18.5％ (108/589) respectively,these accounted for 88.3％(520/589) of total inconsistency.Conclusion The spectrum of diseases and clinical characteristics varies widely and often presents with multiorgan involvement in patients with inconsistent ANCA results.These reasons make it easy to be misdiagnosed.Attention should be paid to identify and different these inconsistency.

Application value of serum thyroid peroxidase in screening thyroid dysfunction in pregnancy / 国际检验医学杂志

Objective To research the clinical value of serum thyroid peroxidase (TPOAb) in screening thyroid dysfunction in pregnancy.Methods The concentration of serum TPOAb and TSH(thyroid-stimulating hormone) was detected by MEIA and CMIA in 75 cases of pregnant women with thyroid disfunction,and 145 cases of pregnant women without tyhroid dysfunction (as control group).Results There were significant differences in both TSH and TPOAb levels between pregnant women with and without thyroid dysfunction(P0.05). So the normal serum TSH could not completely exclude the thyroid dysfunction in pregnant women.Conclusion TPOAb can be used as a prenatal screening marker for early diagnosis of thyroid dysfunction in pregnancy. From the diagnostic point, TSH can not completely substitute for TPOAb and the abnormal TPOAb can indicate the possibility and risk for autoimmune thyroid disease in pregnant women.