Objective To detect the expression of copine 1 (CPNE1) in the gastric cancer (GC) and investigate its association with prognosis. MethodsThe clinicopathologic data of 121 patients who underwent radical gastrectomy in the Department of General Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People’s Liberation Army from March 2017 to December 2018 were retrospectively collected. The protein expression of CPNE1 in the GC tissues was detected by immunohistochemical (IHC) staining, and its association with prognosis was analyzed. GC tissues and adjacent tissues samples from 16 patients in the same time were prospectively collected, and the mRNA and protein expressions of CPNE1 were detected by real-time quantitative reverse transcription polymerase chain reaction (RT-qPCR) and Western blot (WB), respectively. Multivariate Cox proportional hazards regression model was used to analyze the prognostic factors of GC patients. ResultsIHC staining results showed that the CPNE1 was mainly expressed in the cell membrane and cytoplasm of gastric epithelial cells, and the color showed different degrees of brown. Among the 121 patients, 70 (57.9%) had high CPNE1 protein expression and 51 (42.1%) had low CPNE1 protein expression. The RT-qPCR and WB results of 16 pairs of fresh tissue specimens showed that the expression levels of CPNE1 mRNA and protein in the GC tissues were higher than those in the corresponding adjacent tissues (CPNE1 mRNA mean value: 1.451 vs. 1.100, P=0.048; CPNE1 protein mean value: 0.995 vs. 0.521, P=0.001). The multivariate Cox proportional hazards regression analysis showed that the high protein expression of CPNE1 [HR (95%CI)=1.931 (1.123, 3.321), P=0.017] was the risk factor affecting the prognosis of the patients with GC. ConclusionCPNE1 highly expresses in GC tissues and is associated with a poor prognosis in patients with GC, and it may be a potential tumor biomarker.
ObjectiveTo understand the research progress of triggering receptor expressed on myeloid cells-1 (TREM-1) in abdominal infection and sepsis. MethodsThe relevant literatures at home and abroad in recent years regarding the research on the role of TREM-1 in abdominal infection and sepsis were retrieved and reviewed. ResultsRecent studies have focused on the key role of TREM-1 in abdominal infection and sepsis. TREM-1 is a pattern recognition receptor, which rapidly upregulated under inflammatory stimulation, forming a positive feedback loop that significantly amplifies the immune response. Its activation can trigger the cascaded release of a large number of proinflammatory factors and chemokines, exacerbating the inflammatory storm; at the same time, excessive activation of the pathway is regarded as the core driving mechanism for the progression of sepsis and even septic shock. ConclusionsThe TREM-1 mediated amplification effect of inflammatory cascades has been identified as a key link in immune imbalance in infectious diseases such as sepsis and abdominal infection. Further clarification of the expression dynamics of TREM-1 under different infectious conditions and the regulatory mechanisms of its signaling pathways is expected to provide new biomarkers for the clinical diagnosis and prognostic evaluation of infectious diseases, as well as theoretical basis for targeted intervention strategies and new drug development, thereby promoting the establishment and optimization of precise diagnosis and treatment regimens.
