Objective To evaluate the efficacy and safety of transcatheter arterial chemoembolization(TACE)combined with per-cutaneous microwave ablation(MWA)in treatment of large-sized hepatic carcinoma.Methods A total of 84 patients with large-sized hepatic carcinoma were randomly and equally divided into the study group(n=42)and control group(n=42).TACE combined with MWA was carried out in the patients of the study group,while only TACE was performed in the patients of the control group.Results The effective rate of the study group and the control group was 71.4% and 42.8% respectively,and the difference between the two groups was statistically significant(P <0.05).In the study group,the survival rates at 6,12,18,24 months after the treatment were 88.1%,73.8%,52.3% and 33.3% respectively,while in the control group the survival rates were 76.2%,57.1%,30.9% and 9.5%respectively.There was no statistically significant differences in the postoperative complications between the two groups.Conclusion TACE combined with MWA appears to be an effective approach for the treatment of large-sized hepatic carcinoma.The effect of combined therapy is obviously superior to the only TACE.

OBJECTIVE: To compare the ELISA and Pharmica unicap reagents of Dermatophagoides pteronyssinus specific IgG4 in clinic. METHOD: The stability of ELISA reagent was studied first with parameters of intra and inter assay variations (%CV). Calibration curve of the two reagents was compared. Sixty-five serum samples before or after standardized specific immunotherapy were examined with the two methods, correlation coefficient was calculated. RESULT: The stability of ELISA reagent was good with low intra and inter assay variations (3.48% and 5.78%). Calibration curve of the two reagents was similar. The correlation coefficient was 0.93 between the two test methods. CONCLUSION The results of ELISA and Pharmica unicap reagents of Dermatophagoides pteronyssinus specific IgG4 were highly consistent. The ELISA reagents could be applied in clinic.
Animals ; Calibration ; Enzyme-Linked Immunosorbent Assay ; methods ; Humans ; Immunoglobulin G ; blood ; Indicators and Reagents ; Pyroglyphidae ; immunology

Objective To explore the differentially expressed mRNAs and related biological processes and pathways in fractional low-dose ionizing radiation (LDIR)-induced senescence of normal human bronchial epithelial (HBE) cells by high-throughput mRNA sequencing and bioinformatics techniques. Methods Senescence-associated β-galactosidase staining and senescence-associated secretion phenotype gene mRNA and protein expression levels were measured at 24 and 48 h after irradiating HBE cells 7 times at doses of 0, 50, 100, and 200 mGy, respectively. The differentially expressed genes were screened by high-throughput sequencing for Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. Results The senescence-positive area of fractional low-dose irradiated HBE cells increased in a dose-dependent manner (P < 0.05). The mRNA levels and protein expression of transforming growth factor-β1(TGF-β1) and matrix metalloproteinase-9(MMP-9) genes were increased in the 100 mGy × 7 and 200 mGy × 7 groups at 24 and 48 h after the end of irradiation compared with the control group. High-throughput sequencing showed that there were 882, 475, and 1205 differentially expressed mRNAs in each dose group compared with the control group. GO analysis showed that the differentially expressed mRNAs in each dose group were mainly enriched in biological processes such as cell cycle regulation, regulation of nitrogen compound metabolic process, regulation of cell division and response to stimulus. KEGG analysis showed that the differentially expressed mRNAs were mainly enriched in the pathways of cell cycle, cell senescence, and ferroptosis. Conclusion Fractional LDIR induced senescence in HBE cells, and differentially expressed mRNA-associated biological processes and pathways in senescent cells are related to cell cycle and cell senescence.

Objective To investigate the mechanism of fractionated low-dose ionizing radiation (LDIR) in the induction of EA.hy926 cell senescence. Methods EA.hy926 cells were irradiated with X-ray at 0, 50, 100, and 200 mGy × 4, respectively, and cultured for 24, 48, and 72 h. Several indicators were measured, including the levels of cellular senescence-associated β-galactosidase (SA-β-gal) staining, mRNA levels of senescence-associated cell cycle protein-dependent kinase inhibitor genes CDKN1A and CDKN2A, reactive oxygen species (ROS), total antioxidant capacity (T-AOC), and phosphorylated H2A histone family member X (γ-H2AX). Results After 4 fractionated LDIR, compared with the control group, the treatment groups showed increased nucleus area, blurred cell edge, and increased SA-β-gal positive area (P < 0.05) at 24, 48 and 72 h. After 4 fractionated LDIR, the mRNA level of CDKN1A increased in the 100 and 200 mGy × 4 groups at 24 and 48 h (P < 0.05), and CDKN2A mRNA level increased in the 100 and 200 mGy × 4 groups at 48 and 72 h (P < 0.05). The fluorescence intensity of ROS increased in treatment groups at 24, 48, and 72 h after 4 fractionated LDIR (P < 0.05). After 4 fractionated LDIR, the T-AOC level increased in the 100 and 200 mGy × 4 groups at 24 h (P < 0.05), and T-AOC level increased in all treatment groups at 48 and 72 h (P < 0.05). After 4 fractionated LDIR, γ-H2AX fluorescence intensity increased in all treatment groups at 24 h (P < 0.05), and the fluorescence intensity increased in the 100 and 200 mGy × 4 groups at 48 and 72 h (P < 0.05). Conclusion Fractionated LDIR can induce cellular senescence in EA.hy926 cells by impacting the cellular oxidation-antioxidation and oxidative damage levels, and the effects were relatively evident at 100 and 200 mGy.