1.Management and practice of intra-laboratory Turn-Around-Time in emergency testing laboratory
Hongwei ZHANG ; Linyi XIONG ; Juan WANG ; Yunchun YANG ; Sheqiang ZHANG ; Guanghao LEI ; Leiyang DAI
International Journal of Laboratory Medicine 2017;38(8):1079-1081
Objective To master the actual work efficiency situation of emergency inspection,analyze the existing problems,and provide objective basis for continuous improvement through the statistic analysis of intra-laboratory turn-around time (TAT) median,coincidence rate of inspection report within the specified time limit,report timeout reasons and other indexes of different items of emergency inspection group in 2015.Methods All kinds of original data from the different items of emergency inspection groupswere derived from LIS system,according to the different types of projects in different segments.Microsoft Excel2003 software was used to count the actual TAT time of various items,and function was used to calculate TAT median;The non-conformance rate (inspection report timeout rate) and coincidence rate within the prescribed time limit by inspection report were calculated,and gather the statistical analysis on the timeout reasons of daily recorded report.Results With the exception of electrochemical luminescence class,the TAT of other items decreased in different degrees of emergency inspection group in 2015 when compared with 2014.The average coincidence rate of inspection report of various items within the time limit was 94.8%,non-conformance rate of inspection report of prescribed time limit was 5.2%.The top four inspection timeout reasons of various items were more number of submitted samples(59.6%),redo the reinspection (12.4%),smear reinspection (12.0%) and equipment failure (10.0%) in turn.Conclusion The time limit of the emergency report meets the specified requirements and statistical analysis of the causes of overtime can find out the problems and take appropriate measures to provide an objective basis for continuous improvement.
2.Unraveling the Heterogeneity of CD8+ T-Cell Subsets in Liver Cirrhosis: Implications for Disease Progression
Kepu ZHENG ; Leiyang DAI ; Shengning ZHANG ; Yingpeng ZHAO ; Wang LI ; Yang GAO ; Yuanyi MANG ; Lingfeng JIAO ; Yu TANG ; Jianghua RAN
Gut and Liver 2025;19(3):410-426
Background/Aims:
Liver cirrhosis involves chronic inflammation and progressive fibrosis.Among various immune cells, CD8+ T cells are considered a major contributor to hepatic inflammation and fibrosis. However, the exact molecular pathways governing CD8+ T-cell-mediated effects in cirrhosis remain unclear.
Methods:
This study analyzed transcriptomic and single-cell sequencing data to elucidate CD8+ T-cell heterogeneity and implications in cirrhosis.
Results:
Weighted gene co-expression analysis of bulk RNA-seq data revealed an association between cirrhosis severity and activated T-cell markers like HLA and chemokine genes. Furthermore, single-cell profiling uncovered eight CD8+ T-cell subtypes, notably, effector memory (Tem) and exhausted (Tex) T cells. Tex cells, defined by PDCD1, LAG3, and CXCL13 expression, were increased in cirrhosis, while Tem cells were decreased. Lineage tracing and differential analysis highlighted CXCL13+ Tex cells as a terminal, exhausted subtype of cells with roles in PD-1 signaling, glycolysis, and T-cell regulation. CXCL13+ Tex cells displayed T-cell exhaustion markers like PDCD1, HAVCR2, TIGIT, and TNFRSF9. Functional analysis implicated potential roles of these cells in immunosuppression. Finally, a CXCL13+ Tex-cell gene signature was found that correlated with cirrhosis severity and poorer prognosis of liver cancer.
Conclusions
In summary, this comprehensive study defines specialized CD8+ T-cell subpopulations in cirrhosis, with CXCL13+ Tex cells displaying an exhausted phenotype associated with immune dysregulation and advanced disease. Key genes and pathways regulating these cells present potential therapeutic targets.
3.Unraveling the Heterogeneity of CD8+ T-Cell Subsets in Liver Cirrhosis: Implications for Disease Progression
Kepu ZHENG ; Leiyang DAI ; Shengning ZHANG ; Yingpeng ZHAO ; Wang LI ; Yang GAO ; Yuanyi MANG ; Lingfeng JIAO ; Yu TANG ; Jianghua RAN
Gut and Liver 2025;19(3):410-426
Background/Aims:
Liver cirrhosis involves chronic inflammation and progressive fibrosis.Among various immune cells, CD8+ T cells are considered a major contributor to hepatic inflammation and fibrosis. However, the exact molecular pathways governing CD8+ T-cell-mediated effects in cirrhosis remain unclear.
Methods:
This study analyzed transcriptomic and single-cell sequencing data to elucidate CD8+ T-cell heterogeneity and implications in cirrhosis.
Results:
Weighted gene co-expression analysis of bulk RNA-seq data revealed an association between cirrhosis severity and activated T-cell markers like HLA and chemokine genes. Furthermore, single-cell profiling uncovered eight CD8+ T-cell subtypes, notably, effector memory (Tem) and exhausted (Tex) T cells. Tex cells, defined by PDCD1, LAG3, and CXCL13 expression, were increased in cirrhosis, while Tem cells were decreased. Lineage tracing and differential analysis highlighted CXCL13+ Tex cells as a terminal, exhausted subtype of cells with roles in PD-1 signaling, glycolysis, and T-cell regulation. CXCL13+ Tex cells displayed T-cell exhaustion markers like PDCD1, HAVCR2, TIGIT, and TNFRSF9. Functional analysis implicated potential roles of these cells in immunosuppression. Finally, a CXCL13+ Tex-cell gene signature was found that correlated with cirrhosis severity and poorer prognosis of liver cancer.
Conclusions
In summary, this comprehensive study defines specialized CD8+ T-cell subpopulations in cirrhosis, with CXCL13+ Tex cells displaying an exhausted phenotype associated with immune dysregulation and advanced disease. Key genes and pathways regulating these cells present potential therapeutic targets.
4.Unraveling the Heterogeneity of CD8+ T-Cell Subsets in Liver Cirrhosis: Implications for Disease Progression
Kepu ZHENG ; Leiyang DAI ; Shengning ZHANG ; Yingpeng ZHAO ; Wang LI ; Yang GAO ; Yuanyi MANG ; Lingfeng JIAO ; Yu TANG ; Jianghua RAN
Gut and Liver 2025;19(3):410-426
Background/Aims:
Liver cirrhosis involves chronic inflammation and progressive fibrosis.Among various immune cells, CD8+ T cells are considered a major contributor to hepatic inflammation and fibrosis. However, the exact molecular pathways governing CD8+ T-cell-mediated effects in cirrhosis remain unclear.
Methods:
This study analyzed transcriptomic and single-cell sequencing data to elucidate CD8+ T-cell heterogeneity and implications in cirrhosis.
Results:
Weighted gene co-expression analysis of bulk RNA-seq data revealed an association between cirrhosis severity and activated T-cell markers like HLA and chemokine genes. Furthermore, single-cell profiling uncovered eight CD8+ T-cell subtypes, notably, effector memory (Tem) and exhausted (Tex) T cells. Tex cells, defined by PDCD1, LAG3, and CXCL13 expression, were increased in cirrhosis, while Tem cells were decreased. Lineage tracing and differential analysis highlighted CXCL13+ Tex cells as a terminal, exhausted subtype of cells with roles in PD-1 signaling, glycolysis, and T-cell regulation. CXCL13+ Tex cells displayed T-cell exhaustion markers like PDCD1, HAVCR2, TIGIT, and TNFRSF9. Functional analysis implicated potential roles of these cells in immunosuppression. Finally, a CXCL13+ Tex-cell gene signature was found that correlated with cirrhosis severity and poorer prognosis of liver cancer.
Conclusions
In summary, this comprehensive study defines specialized CD8+ T-cell subpopulations in cirrhosis, with CXCL13+ Tex cells displaying an exhausted phenotype associated with immune dysregulation and advanced disease. Key genes and pathways regulating these cells present potential therapeutic targets.
5.Unraveling the Heterogeneity of CD8+ T-Cell Subsets in Liver Cirrhosis: Implications for Disease Progression
Kepu ZHENG ; Leiyang DAI ; Shengning ZHANG ; Yingpeng ZHAO ; Wang LI ; Yang GAO ; Yuanyi MANG ; Lingfeng JIAO ; Yu TANG ; Jianghua RAN
Gut and Liver 2025;19(3):410-426
Background/Aims:
Liver cirrhosis involves chronic inflammation and progressive fibrosis.Among various immune cells, CD8+ T cells are considered a major contributor to hepatic inflammation and fibrosis. However, the exact molecular pathways governing CD8+ T-cell-mediated effects in cirrhosis remain unclear.
Methods:
This study analyzed transcriptomic and single-cell sequencing data to elucidate CD8+ T-cell heterogeneity and implications in cirrhosis.
Results:
Weighted gene co-expression analysis of bulk RNA-seq data revealed an association between cirrhosis severity and activated T-cell markers like HLA and chemokine genes. Furthermore, single-cell profiling uncovered eight CD8+ T-cell subtypes, notably, effector memory (Tem) and exhausted (Tex) T cells. Tex cells, defined by PDCD1, LAG3, and CXCL13 expression, were increased in cirrhosis, while Tem cells were decreased. Lineage tracing and differential analysis highlighted CXCL13+ Tex cells as a terminal, exhausted subtype of cells with roles in PD-1 signaling, glycolysis, and T-cell regulation. CXCL13+ Tex cells displayed T-cell exhaustion markers like PDCD1, HAVCR2, TIGIT, and TNFRSF9. Functional analysis implicated potential roles of these cells in immunosuppression. Finally, a CXCL13+ Tex-cell gene signature was found that correlated with cirrhosis severity and poorer prognosis of liver cancer.
Conclusions
In summary, this comprehensive study defines specialized CD8+ T-cell subpopulations in cirrhosis, with CXCL13+ Tex cells displaying an exhausted phenotype associated with immune dysregulation and advanced disease. Key genes and pathways regulating these cells present potential therapeutic targets.