AIM： To study the expression of the inhibitor of apoptosis protein survivin in hepatocellular carcinoma （HCC）, and its correlation with clinicopathological factors, cell proliferation, recurrence and prognosis afte...AIM： To study the expression of the inhibitor of apoptosis protein survivin in hepatocellular carcinoma （HCC）, and its correlation with clinicopathological factors, cell proliferation, recurrence and prognosis after hepatectomy. METHODS： Immunohistochemical staining of survivin and Ki-67 was performed by the standard streptavidin- peroxidase technique on paraffin sections of 55 cases of HCC. RESULTS： The positive rate of survivin in HCC was 52.7% （29/55）. Significant correlation was found between survivin expression with portal vein thrombi and intrahepatic matastasistic nodes （P 〈 0.05）. The recurrent rate in survivin-positive HCC was significantly higher than that in survivin-negative HCC after hepatectomy, the 1- and 3-year survival rate in patients with survivin-positive tumors was significantly lower than that in patients with survivin-negative tumors （58.62 and 10.34% vs 76.92 and 30.77%, P 〈 0.05, log-rank test）. The proliferation index （Ki-67） in survivin-positive HCC （33.83% ± 18.90%） was significantly higher than that in survivin-negative HCC （19.60% ± 19.35%） （P 〈 0.05）. CONCLUSION： Survivin may play an important role in progression of HCC by promoting cell proliferation, and may be positively correlated with high risk of disease recurrence and poor prognosis in HCC. Its expression may serve as a prognostic factor for patients with HCC after hepatectomy.展开更多
Hybyphantes graminicola is a resident spider species found in maize and cotton fields and is an important biological control agent of various pests.Previous studies have demonstrated that stress from elevated CO2 and ...Hybyphantes graminicola is a resident spider species found in maize and cotton fields and is an important biological control agent of various pests.Previous studies have demonstrated that stress from elevated CO2 and Wolbachia infection can strongly affect spider species.Thus,based on CO2 levels(400 ppm,current atmospheric CO2 concentration and 800 ppm,high CO2 concentration)and Wolbachia status(Wolbachia-infected,W^+and Wolbachia-uninfected,W^-),we divided H.graminicola individuals into four treatment groups:W^-400 ppm,W^-800 ppm,W^+400 ppm,and W^+800 ppm.To investigate the effects of elevated CO2 levels(W^-400 vs W^-800),Wolbachia infection(W^-400 vs W^+400),and the interactions between these two factors(W^-400 Vs W^+800),high-throughput transcriptome sequencing was employed to characterize the de novo transcriptome of the spiders and identify stress-related differentially expressed genes(DEGs).De novo assembly of complementary DNA sequences generated 86688 unigenes,23938 of which were annotated in public databases.A total of 84,21,and 157 DEGs were found among W^-400vs W^-800,W^-400 vs W^+400,and W^-400vs W^+800,respectively.Functional enrichment analysis revealed that metabolic processes,signaling,and catalytic activity were significantly affected by elevated CO2 levels and Wolbachia infection.Our findings suggest that the impact of elevated CO2 levels and Wolbachia infection on the H.graminicola transcriptome was,to a large extent,on genes involved in metabolic processes.This study is the first description of transcriptome changes in response to elevated CO2 levels and WoIbachia infection in spiders.展开更多
文摘AIM： To study the expression of the inhibitor of apoptosis protein survivin in hepatocellular carcinoma （HCC）, and its correlation with clinicopathological factors, cell proliferation, recurrence and prognosis after hepatectomy. METHODS： Immunohistochemical staining of survivin and Ki-67 was performed by the standard streptavidin- peroxidase technique on paraffin sections of 55 cases of HCC. RESULTS： The positive rate of survivin in HCC was 52.7% （29/55）. Significant correlation was found between survivin expression with portal vein thrombi and intrahepatic matastasistic nodes （P 〈 0.05）. The recurrent rate in survivin-positive HCC was significantly higher than that in survivin-negative HCC after hepatectomy, the 1- and 3-year survival rate in patients with survivin-positive tumors was significantly lower than that in patients with survivin-negative tumors （58.62 and 10.34% vs 76.92 and 30.77%, P 〈 0.05, log-rank test）. The proliferation index （Ki-67） in survivin-positive HCC （33.83% ± 18.90%） was significantly higher than that in survivin-negative HCC （19.60% ± 19.35%） （P 〈 0.05）. CONCLUSION： Survivin may play an important role in progression of HCC by promoting cell proliferation, and may be positively correlated with high risk of disease recurrence and poor prognosis in HCC. Its expression may serve as a prognostic factor for patients with HCC after hepatectomy.
基金This work was supported by the National Natural Science Foundation of China,No.31672317,State's Key Project of Research and Development Plan,No.2016YFD0200900Competitive Planning Projects of Hubei Academy of Agricultural Sciences,No.2016jzxjh012.No additional external funding was re-ceived for this study.The funders had no role in study design,data collection or analysis,decision to publish,or preparation of the manuscript.We thank Dr.Christine Watts for manuscript suggestions.
文摘Hybyphantes graminicola is a resident spider species found in maize and cotton fields and is an important biological control agent of various pests.Previous studies have demonstrated that stress from elevated CO2 and Wolbachia infection can strongly affect spider species.Thus,based on CO2 levels(400 ppm,current atmospheric CO2 concentration and 800 ppm,high CO2 concentration)and Wolbachia status(Wolbachia-infected,W^+and Wolbachia-uninfected,W^-),we divided H.graminicola individuals into four treatment groups:W^-400 ppm,W^-800 ppm,W^+400 ppm,and W^+800 ppm.To investigate the effects of elevated CO2 levels(W^-400 vs W^-800),Wolbachia infection(W^-400 vs W^+400),and the interactions between these two factors(W^-400 Vs W^+800),high-throughput transcriptome sequencing was employed to characterize the de novo transcriptome of the spiders and identify stress-related differentially expressed genes(DEGs).De novo assembly of complementary DNA sequences generated 86688 unigenes,23938 of which were annotated in public databases.A total of 84,21,and 157 DEGs were found among W^-400vs W^-800,W^-400 vs W^+400,and W^-400vs W^+800,respectively.Functional enrichment analysis revealed that metabolic processes,signaling,and catalytic activity were significantly affected by elevated CO2 levels and Wolbachia infection.Our findings suggest that the impact of elevated CO2 levels and Wolbachia infection on the H.graminicola transcriptome was,to a large extent,on genes involved in metabolic processes.This study is the first description of transcriptome changes in response to elevated CO2 levels and WoIbachia infection in spiders.
