Objective To investigate the influence of mycophenolate mofetil(MMF) on blood and urine biochemical indica‐tors as well as the expressions of IL‐1 in anti‐glomerular basement membrane(GBM ) nephritis SD rats .Methods The SD rats were randomly divided into control group ,model group and MMF group .And then the models of SD rat anti‐GBM nephritis were estab‐lished by injecting rabbit anti‐SD rat GBM serum antibodies .The urinary protein and blood parameters were detected initially ,1st , 2nd ,3rd and 4th weeks after administration respectively .The expressions of IL‐1 and TGF‐β1 were detected by Elisa Kit and the re‐nal pathological changes were observed by HE and PAS staining .Results After treatment for 4 weeks by MMF ,the 24 h UP ,BUN and SCr levels were lower in MMF group than those of the model group(P<0 .05) .And the expressions of IL‐1 and TGF‐β1 were decreased in MMF group .The results of HE and PAS staining showed that in model group rats ,glomerular tuft morphology was destroyed and inflammatory cell infiltration was observed in the glomeruli .Some glomeruli had cellular crescent formation .Infiltra‐tion of inflammatory cells was also observed in the interstitium .MMF clearly improved these pathological changes overall ,with im‐provements noted in both glomerular and tubular degeneration as well as in the infiltration of inflammatory cells .Conclusion MMF shows certain renal protective effect on anti‐GBM nephritis SD rats .

Objective:To explore the health status of occupational benzene exposure workers, and to provide a scientific basis for the development of reasonable health monitoring and effective protective measures.Methods:In March 2019, the occupational health surveillance data were collected including blood pressure, electrocardiogram, blood routine, urine routine, liver function, etc of 7810 benzene contact workers in 150 enterprises in Jiangxi Province in 2017, to analyze and assess their health status.Results:Among the 7810 benzene workers, there were 5451 males and 2359 females; the average age was (40.5±9.9) years; and the median benzene working age was 3.5 years. The detection rate of hypertension was 17.0% (734/4317) , the abnormal rate of urine routine was 15.7% (1227/7810) , the abnormal rate of liver function was 8.6% (356/4147) , and the abnormal rate of electrocardiogram was 12.3%(963/7810). The detection rates of low count number of leukocytes, platelets, neutrophils and occupational contraindications were 4.6%(360/7810) , 1.4%(108/7810) , 4.2%(330/7810) and 1.4%(110/7810) , respectively. The detection rates of low count number of leukocytes, platelets and neutrophils in female were all higher than those in male ( P<0.05). The detection rates of low count number of platelets, neutropenia and occupational contraindications increased with age and working age ( P<0.05 ). There were significant differences in the detection rates of low count number of leukocytes, platelets, neutrophils and occupational contraindications among benzene workers in different economic types ( P<0.05) , and the highest among foreign companies, followed by private enterprise. There were statistically significant differences in the detection rates of low count number of platelets, neutrophils and occupational contraindications in benzene workers of different enterprise sizes ( P<0.05) , and the highest was found in micro enterprises, followed by small enterprises. Conclusion:In 2017, the occupational health status of workers exposed to benzene in Jiangxi province is not optimistic. It is necessary to strengthen the occupational health supervision of small and micro-sized enterprises, foreign enterprises and private enterprises, take the initiative to improve health surveillance, and effectively protect the physical and mental health of workers.

Objective:To explore the health status of occupational benzene exposure workers, and to provide a scientific basis for the development of reasonable health monitoring and effective protective measures.Methods:In March 2019, the occupational health surveillance data were collected including blood pressure, electrocardiogram, blood routine, urine routine, liver function, etc of 7810 benzene contact workers in 150 enterprises in Jiangxi Province in 2017, to analyze and assess their health status.Results:Among the 7810 benzene workers, there were 5451 males and 2359 females; the average age was (40.5±9.9) years; and the median benzene working age was 3.5 years. The detection rate of hypertension was 17.0% (734/4317) , the abnormal rate of urine routine was 15.7% (1227/7810) , the abnormal rate of liver function was 8.6% (356/4147) , and the abnormal rate of electrocardiogram was 12.3%(963/7810). The detection rates of low count number of leukocytes, platelets, neutrophils and occupational contraindications were 4.6%(360/7810) , 1.4%(108/7810) , 4.2%(330/7810) and 1.4%(110/7810) , respectively. The detection rates of low count number of leukocytes, platelets and neutrophils in female were all higher than those in male ( P<0.05). The detection rates of low count number of platelets, neutropenia and occupational contraindications increased with age and working age ( P<0.05 ). There were significant differences in the detection rates of low count number of leukocytes, platelets, neutrophils and occupational contraindications among benzene workers in different economic types ( P<0.05) , and the highest among foreign companies, followed by private enterprise. There were statistically significant differences in the detection rates of low count number of platelets, neutrophils and occupational contraindications in benzene workers of different enterprise sizes ( P<0.05) , and the highest was found in micro enterprises, followed by small enterprises. Conclusion:In 2017, the occupational health status of workers exposed to benzene in Jiangxi province is not optimistic. It is necessary to strengthen the occupational health supervision of small and micro-sized enterprises, foreign enterprises and private enterprises, take the initiative to improve health surveillance, and effectively protect the physical and mental health of workers.

OBJECTIVETo study the feasibility of preparing a therapeutic lung cancer vaccine by transfecting dendritic cells (DCs) with adeno-associated virus vector carrying carcino-embryonic antigen gene (rAAV/CEA).

METHODSAdherent cells (monocytes) isolated from the peripheral blood of a healthy donor were infected with rAAV/CEA virus stock or pulsed with CEA peptide (control). The monocytes in both groups were induced into mature DCs with recombinant human GM-CSF, IL-4 and TNF-α. At day 7 of induction, the mature DCs were harvested and mixed with T lymphocytes. T cell proliferation stimulated by the DCs was assessed with (3)H-thymidine uptake, and the expression of IL-4, IFN-γ, CD8, CD4, CD25 and CD69 in cytotoxic T lymphocytes (CTL) was analyzed with flow cytometry. The cytotoxicity of the CTL against the target CEA-positive lung cancer A549 cells was tested by (51)Cr releasing assay.

RESULTSThe DCs transfected with rAAV/CEA strongly stimulated the proliferation of the T cell populations, and the induced CTL showed high expressions of CD8, CD69 and IFN-γ. The transfected DCs exhibited a high killing ability of CEA-positive lung cancer cells, and the killing showed a CEA antigen specificity and was limited by MHC I. These results suggested the ability of rAAV/CEA-transfected DCs in generating specific cellular immunity in vitro.

CONCLUSIONIt is feasible to prepare therapeutic lung cancer vaccines by transfecting DCs with rAAV/CEA.

Cancer Vaccines ; Carcinoembryonic Antigen ; genetics ; Cell Line ; Dendritic Cells ; immunology ; Dependovirus ; genetics ; Genetic Vectors ; Humans ; Monocytes ; immunology ; Transfection

Objective To study the feasibility of preparing a therapeutic lung cancer vaccine by transfecting dendritic cells (DCs) with adeno-associated virus vector carrying carcino-embryonic antigen gene (rAAV/CEA). Methods Adherent cells (monocytes) isolated from the peripheral blood of a healthy donor were infected with rAAV/CEA virus stock or pulsed with CEA peptide (control). The monocytes in both groups were induced into mature DCs with recombinant human GM-CSF, IL-4 and TNF-α. At day 7 of induction, the mature DCs were harvested and mixed with T lymphocytes. T cell proliferation stimulated by the DCs was assessed with 3H-thymidine uptake, and the expression of IL-4, IFN-γ, CD8, CD4, CD25 and CD69 in cytotoxic T lymphocytes (CTL) was analyzed with flow cytometry. The cytotoxicity of the CTL against the target CEA-positive lung cancer A549 cells was tested by 51Cr releasing assay. Results The DCs transfected with rAAV/CEA strongly stimulated the proliferation of the T cell populations, and the induced CTL showed high expressions of CD8, CD69 and IFN-γ. The transfected DCs exhibited a high killing ability of CEA-positive lung cancer cells, and the killing showed a CEA antigen specificity and was limited by MHC I. These results suggested the ability of rAAV/CEA-transfected DCs in generating specific cellular immunity in vitro. Conclusion It is feasible to prepare therapeutic lung cancer vaccines by transfecting DCs with rAAV/CEA.

Objective To study the feasibility of preparing a therapeutic lung cancer vaccine by transfecting dendritic cells (DCs) with adeno-associated virus vector carrying carcino-embryonic antigen gene (rAAV/CEA). Methods Adherent cells (monocytes) isolated from the peripheral blood of a healthy donor were infected with rAAV/CEA virus stock or pulsed with CEA peptide (control). The monocytes in both groups were induced into mature DCs with recombinant human GM-CSF, IL-4 and TNF-α. At day 7 of induction, the mature DCs were harvested and mixed with T lymphocytes. T cell proliferation stimulated by the DCs was assessed with 3H-thymidine uptake, and the expression of IL-4, IFN-γ, CD8, CD4, CD25 and CD69 in cytotoxic T lymphocytes (CTL) was analyzed with flow cytometry. The cytotoxicity of the CTL against the target CEA-positive lung cancer A549 cells was tested by 51Cr releasing assay. Results The DCs transfected with rAAV/CEA strongly stimulated the proliferation of the T cell populations, and the induced CTL showed high expressions of CD8, CD69 and IFN-γ. The transfected DCs exhibited a high killing ability of CEA-positive lung cancer cells, and the killing showed a CEA antigen specificity and was limited by MHC I. These results suggested the ability of rAAV/CEA-transfected DCs in generating specific cellular immunity in vitro. Conclusion It is feasible to prepare therapeutic lung cancer vaccines by transfecting DCs with rAAV/CEA.