ObjectiveThrough the analysis of gene enrichment in gastric cancer samples, the changes of RNA alternative splicing and related molecular mechanisms were explored.MethodsThe pathological samples of three cases of gastric cancer patients and adjacent tissues were obtained clinically, and the data were obtained by cell culture, protein quantitative labeling, gene chip detection, high-throughput sequencing, etc. GO enrichment was performed on samples by DAVID and other network software, KEGG pathway analysis yielded relevant information for screening for variable splicing of differential genes.ResultsA total of 605 genes with individual ENSG IDs consistent with the gene identification of the ENSEMBL database were screened, and the gene levels of cancer tissues and adjacent tissues were compared. There were 411 non-differentiated genes, 119 differentially up-regulated genes, and 75 differentially down-regulated genes. A total of 69 differentially spliced genes were screened out. Functional annotation and pathway analysis revealed that the detection genes were mainly concentrated in molecular metabolic processes, cell migration, extracellular matrix tissue, blood coagulation, cell matrix adhesion, signal transduction, negative apoptosis regulation, angiogenesis, platelet activation, complement system, adipokines signaling pathway, peroxisome, cancer pathway, transforming growth factor (TGF) signaling pathway, axon guidance, cell cycle, etc.ConclusionThere are a large number of differentially spliced genes in gastric cancer tissue samples, and the difference in expression due to changes in splice sites may play an important role in the development of gastric cancer.
Objective To analyze the risk factors and prognosis of acute gastrointestinal injury (AGI) early after acute type A aortic dissection (ATAAD) repair, and develop the Nomogram prediction model of AGI. Methods The patients who underwent ATAAD cardiopulmonary bypass surgery in our hospital from 2016 to 2021 were collected and divided into an AGI group and a non-AGI group. The clinical data of the two groups were compared. A Nomogram prediction model was established by using R language. Results A total of 188 patients were enrolled, including 166 males and 22 females, aged 22-70 (49.70±9.96) years. Through multivariate logistic regression analysis, the aortic dissection (AD) risk score, poor perfusion of superior mesenteric artery (SMA), duration of aortic occlusion and intraoperative infusion of red blood cells were the predictors for AGI (P<0.05). There were statistical differences in the ventilator-assisted duration, ICU stay time, liver dysfunction, renal insufficiency, parenteral nutrition, nosocomial infection and death within 30 days after the operation between the two groups (P<0.05). The Nomogram prediction model was established by using the prediction factors, and the C index was 0.888. Through internal verification, the C index was 0.848. The receiver operating characteristic curve was used to evaluate the discrimination of the model, and the area under the curve was 0.888. Conclusion The AD risk score after ATAAD, poor perfusion of SMA, duration of aortic occlusion and intraoperative infusion of red blood cells are independent predictors for AGI. The Nomogram model has good prediction ability.
ObjectiveTo compare the effectiveness of percutaneous coaxial large-channel endoscopic lumbar interbody fusion (PE-LIF) and minimal invasive transforaminal lumbar interbody fusion (MIS-TLIF) in the treatment of degenerative lumbar spinal stenosis. Methods The clinical data of 134 patients with single-segment degenerative lumbar spinal stenosis who met the selection criteria between January 2019 and January 2021 were retrospectively analyzed, including 52 cases in PE-LIF group and 82 cases in MIS-TLIF group. There was no significant difference in general data such as gender, age, disease duration, surgical segment, and preoperative visual analogue scale (VAS) scores of low back pain and lower extremity pain, and Oswestry disability index (ODI) between the two groups (P>0.05). The operation time, intraoperative blood loss, postoperative drainage, hospitalization stay, and complications were recorded and compared between the two groups. The level of serum creatine kinase (CK) was recorded at 1 day before operation and at 1 and 3 days after operation to evaluate intraoperative muscle damage. The Brantigan criteria was used to evaluate the interbody fusion in the two groups. The VAS scores of low back pain and lower extremity pain at 1 day before operation and at 3 days, 3 months, and 1 year after operation, and the ODI scores at 1 day before operation and at 3 months and 1 year after operation were recorded and compared between the two groups. ResultsThere was no significant difference in operation time and hospitalization stay between the two groups (P>0.05). The intraoperative blood loss and postoperative drainage in the PE-LIF group were significantly lower than those in the MIS-TLIF group (P<0.05). There was no significant difference in serum CK between the two groups before operation (P>0.05), and the serum CK in the PE-LIF group at 1 and 3 days after operation were significantly lower than those in the MIS-TLIF group (P<0.05). All patients were followed up regularly for 1 year. The postoperative VAS scores of low back pain and lower extremity pain and ODI score in both groups were significantly lower than those before operation (P<0.05); there was no significant difference between the two groups (P>0.05). At 1 year after operation, 48 patients in PE-LIF group had successful interbody fusion, and 77 patients in MIS-TLIF group had successful interbody fusion. There was no significant difference in the interbody fusion distribution between the two groups at 3 months and 1 year after operation (P>0.05). There were 2 and 3 cases of lower limb numbness, 1 and 3 cases of neuroedema pain, 1 and 1 case of Cage displacement, 1 and 1 case of pedicle screw loosening in the PE-LIF group and MIS-TLIF group, respectively. No infection or dural sac tearing occurred in the two groups. There was no significant difference in the incidence of complications between the two groups (9.6% vs. 9.8%) (χ2=0.001, P=0.979). ConclusionIn the treatment of single-segment degenerative lumbar spinal stenosis, PE-LIF can achieve similar effectiveness as MIS-TLIF, and PE-LIF has less intraoperative blood loss and less muscle damage.