RESUMO
BACKGROUND: Linc00261 is a lncRNA that plays key roles in tumor suppression. While gallbladder carcinoma (GBC) is one of the most common cancer of the bile duct. However, the study about Linc00261's correlation with the clinicopathological characteristics and postoperative outcomes of the GBC patients is few. Therefore, we want to explore Linc00261 in GBC and assess its potential of clinical diagnosis. METHODS: Quantitative real-time PCR (qRT-PCR) was used to detect the expression of Linc00261 in specimens of GBC and adjacent tissues as well as cell lines. Chi-square test has been used to research the correlation of the Linc00261 expression in GBC with the clinicopathological features. The Cox model was used to assess the value of Linc00261 in predicting the prognosis of GBC patients. ROC curve analysis was used to test the specificity and sensitivity of diagnostic method of serum Linc00261 expression. RESULTS: The expression level of Linc00261 in GBC was significantly lower than normal tissues' and it was also up-regulated after surgery. The Linc00261 expression was significantly correlated with large tumor size (P<0.0001), late TNM stage (P=0.008), negative liver metastasis (P=0.027) and well differentiated phenotype (P=0.017). The patients with lower Linc00261 expression had significantly worse outcomes in terms of overall survival (P=0.0188) and progression-free survival (P=0.0029), and the low expression of Linc00261 was identified as an independent risk factor affecting postoperative survival rate of the patients (P<0.01). The expression of Linc00261 in serum was down-regulated of GBC patients and increased in the patients after operation. Linc00261 expressed in serum was also positively associated with its expression in GBC tissue of patients (P<0.0001). The GBC diagnosis efficacy of using the serum Linc00261 level to identify the GBC has high specificity and sensitivity (AUC 0.805). CONCLUSIONS: Linc00261 could be identified a novel gene associated with GBC development and progression. It also may serve as a new diagnostic and prognostic biomarker for patients with GBC.
RESUMO
Central hepatectomy is amongst the most difficult surgeries of liver tumors. For the routine local excision of a tumor, if the tumor has invaded the blood vessels or bile duct of the liver, then half of the liver or three lobes of the liver are resected. This results in two major drawbacks, one of which is that the residual hepatic lobe may not compensate for the damage, so it is not possible to perform conventional partial resection. The other is that the volume of normal liver tissue removed may be much more than the volume of tumor removed, causing substantial waste. In the present study, surgery was performed to resect a central liver tumor. In that surgery, the V segment and parts of the IV, VI and VIII segments were resected, and the blood supply and biliary drainage of the left hepatic lobe were kept intact. However, for the remaining VI, VII and VIII segments of the right hepatic lobe, only the blood supply from the portal vein was maintained and no arterial blood supply or biliary drainage was kept so that the patient had the opportunity to undergo radical resection and successful rehabilitation. The reason these opportunities may be possible is that the residual right liver is a temporary replacement therapy in the perioperative period. Therefore, for central hepatic tumors, particularly tumors that have invaded the neighboring bile ducts or blood vessels, if the blood supply and biliary drainage on one side is maintained and the blood supply to the other side from the portal vein is kept intact, then it is possible to perform radical resection. This provides a novel approach to the clinical resection of central liver tumors.