Objective To explore the correlation between central venous oxygen saturation(ScvO2),blood lactate(Lac),arterial oxygen saturation(SaO2)and mechanical ventilation time in infants with congenital heart disease(CHD).Methods Eighty-four CHD children treated in the First People's Hospital of Zunyi were enrolled between January 2020 and December 2024.According to postoperative mechanical ventilation time,they were divided into prolongation group(28 cases,mechanical ventilation time≥72 h)and non-prolongation group(56 cases,mechanical ventilation time<72 h).The clinical data,score of risk adjustment for congenital heart surgery(RACHS-1),levels of ScvO2,and Lac and SaO2 in the two groups were compared.The risk factors of postoperative mechanical ventilation time were analyzed by multivariate logistic regression analysis,and predictive value of ScvO2,Lac and SaO2 for prolonged mechanical ventilation time was analyzed by ROC curves.The clinical outcomes in the two groups were recorded.Results There were significant differences in age,preoperative pneumonia,RACHS-1 grading,and levels of ScvO2,Lac and SaO2 among children with different mechanical ventilation time(P<0.05).Multivariate logistic regression analysis showed that ScvO2,Lac and SaO2 were independent influencing factors of postoperative mechanical ventilation time(P<0.05).ROC curves analysis showed that area under the curve(AUC)values of ScvO2,Lac,SaO2 and combined detection for predicting prolonged postoperative mechanical ventilation were 0.846,0.863,0.839 and 0.917,and the best cut-off values were 67.64％,1.51mmol/L and 96.06％,respec-tively(P<0.05).The failure rate of weaning in the prolongation group was higher,and stay time in PICU and actual length of hospital stay were longer than those in non-prolongation group(P<0.05).Conclusion The levels of ScvO2,Lac and SaO2 are related to mechanical ventilation time in CHD infants.They are all independent risk factors affecting prolonged mechanical ventilation and can be applied as auxiliary detection indexes to predict the prolonga-tion of mechanical ventilation in clinical practice.

Objective:To investigate the molecular mechanism of miR-886-5p targeting BCL-2-associated X protein (BAX) to inhibit the proliferation, migration, and invasion of liver cancer cells.Methods:mRNA expression data of HCC patients were obtained from the Starbase database, including 370 liver cancer samples and 50 normal liver tissue samples adjacent to the cancer. Analyze the expression of miR-886-5p in the previously obtained data and investigate the relationship between miR-886-5p and BAX in liver cancer samples. After transfection of the corresponding plasmids into Huh7 and HepG2 cells, the following groups were established. Analyze the interaction between miR-886-5p and BAX in vitro, detect the protein expression by Western blotting, and verify the targeting relationship between the two by dual luciferase reporter gene assay.Results:Starbase database analysis found that the standardized expression level of miR-886-5p in 370 liver cancer samples was lower than that in normal liver tissue samples (0.12±0.07 vs. 0.73±0.27, t=-15.71, P<0.001), and the expression level of miR-886-5p was positively correlated with the expression level of BAX ( r=0.152, P=0.003). qRT-PCR analysis showed that the expression level of miR-886-5p in HL-7702 cells was higher than that in Huh7 (4.57±0.06 vs. 1.61±0.40, t=32.48) and HepG2 (4.57±0.06 vs. 1.03±0.13, t=143.9), and the expression level of BAX in HL-7702 cells was higher than that in Huh7 (4.01±0.12 vs. 1.28±0.09, t=82.20) and HepG2 (4.01±0.12 vs. 1.30±0.11, t=80.76), the differences were statistically significant (all P<0.001). The proliferation, migration, and invasion abilities of Huh7 and HepG2 cells decreased after transfection with miR-886-5p mimics, while the expression levels of BAX at the mRNA and protein levels increased. However, after inhibiting the expression of miR-886-5p, the above indicators of cells were the opposite, and the dif-ferences were statistically significant (all P<0.05). The viability, EdU positivity rate, cell migration rate, and number of transmembrane cells in the miR-886-5p+ BAX group were lower than those in the BAX group, and the relative expression levels of miR-886-5p, BAX mRNA, and BAX protein were higher than those in the BAX group. However, the above indicators in the Sponge+ BAX group showed opposite trends, and all differences were statistically significant (all P<0.05). There was a targeted binding site between miR-886-5p and BAX. Conclusion:Both miR-886-5p and BAX are downregulated in liver cancer, and miR-886-5p inhibits the proliferation, migration, and invasion of liver cancer cells by targeting BAX.

OBJECTIVE To explore the distribution of pathogens isolated from the cardiac surgery children with postoperative catheter-related bloodstream infection(CRBSI)and observe the transforming growth factor β1(TGF-β1)gene polymorphisms and the change of high-sensitivity C-reactive protein(hs-CRP),Smad homologue 2 and Smad 3 levels.METHODS A total of 88 children who received peripherally inserted central catheter(PICC)puncture after cardiac surgery and were complicated with postoperative CRBSI in the First People's Hospital of Zunyi from Aug.2019 to Oct.2023 were assigned as the infection group.Meanwhile,110 children who were trea-ted with PICC and did not have postoperative CRBSI were randomly chosen as the non-infection group.The base-line data,TGF-β1 gene polymorphisms and the levels of hs-CRP,Smad 2 and Smad 3 were compared between the two groups.The distribution of the pathogens isolated from the infection group was observed.The values of hs-CRP,Smad 2 and Smad 3 in diagnosis of the postoperative CRBSI in the cardiac surgery children were analyzed by receiver operating characteristic(ROC)curves.RESULTS The proportions of patients with intravenous cathe-ter indwelling no less than 10 days,length of intensive care unit(ICU)stay no less than 5 days,the frequencies of CC genotypes and C allele at TGF-β1+869C/T locus were higher in the infection group than those in the non-infection group(P＜0.05).Acinetobacter baumannii was the predominant species of pathogen isolated from the infection group,accounting for 24.20％.The levels of serum hs-CRP,Smad 2 and Smad 3 of the infection group were(24.65±7.65)mg/L,(13.54±2.45)pg/ml and(13.65±2.65)pg/ml,respectively,higher than those of the non-infection group(all P＜0.001).The area under the curve(AUC)of the joint detection of hs-CRP,Smad 2 and Smad 3 was highest in diagnosis of the postoperative CRBSI in the cardiac surgery children(P＜0.05).CONCLUSIONS A.baumannii is dominant among the pathogens isolated from the cardiac surgery children with postoperative CRBSI.The postoperative CRBSI may be associated with the intravenous catheter in-dwelling time and length of ICU stay.The C allele at TGF-β1+869C/T locus may be the susceptibility gene for the postoperative CRBSI.The joint detection of hs-CRP,Smad 2 and Smad 3 has the highest value in diagnosis of the postoperative CRBSI.

OBJECTIVE To explore the distribution of pathogens isolated from the cardiac surgery children with postoperative catheter-related bloodstream infection(CRBSI)and observe the transforming growth factor β1(TGF-β1)gene polymorphisms and the change of high-sensitivity C-reactive protein(hs-CRP),Smad homologue 2 and Smad 3 levels.METHODS A total of 88 children who received peripherally inserted central catheter(PICC)puncture after cardiac surgery and were complicated with postoperative CRBSI in the First People's Hospital of Zunyi from Aug.2019 to Oct.2023 were assigned as the infection group.Meanwhile,110 children who were trea-ted with PICC and did not have postoperative CRBSI were randomly chosen as the non-infection group.The base-line data,TGF-β1 gene polymorphisms and the levels of hs-CRP,Smad 2 and Smad 3 were compared between the two groups.The distribution of the pathogens isolated from the infection group was observed.The values of hs-CRP,Smad 2 and Smad 3 in diagnosis of the postoperative CRBSI in the cardiac surgery children were analyzed by receiver operating characteristic(ROC)curves.RESULTS The proportions of patients with intravenous cathe-ter indwelling no less than 10 days,length of intensive care unit(ICU)stay no less than 5 days,the frequencies of CC genotypes and C allele at TGF-β1+869C/T locus were higher in the infection group than those in the non-infection group(P＜0.05).Acinetobacter baumannii was the predominant species of pathogen isolated from the infection group,accounting for 24.20％.The levels of serum hs-CRP,Smad 2 and Smad 3 of the infection group were(24.65±7.65)mg/L,(13.54±2.45)pg/ml and(13.65±2.65)pg/ml,respectively,higher than those of the non-infection group(all P＜0.001).The area under the curve(AUC)of the joint detection of hs-CRP,Smad 2 and Smad 3 was highest in diagnosis of the postoperative CRBSI in the cardiac surgery children(P＜0.05).CONCLUSIONS A.baumannii is dominant among the pathogens isolated from the cardiac surgery children with postoperative CRBSI.The postoperative CRBSI may be associated with the intravenous catheter in-dwelling time and length of ICU stay.The C allele at TGF-β1+869C/T locus may be the susceptibility gene for the postoperative CRBSI.The joint detection of hs-CRP,Smad 2 and Smad 3 has the highest value in diagnosis of the postoperative CRBSI.

Objective To explore the correlation between central venous oxygen saturation(ScvO2),blood lactate(Lac),arterial oxygen saturation(SaO2)and mechanical ventilation time in infants with congenital heart disease(CHD).Methods Eighty-four CHD children treated in the First People's Hospital of Zunyi were enrolled between January 2020 and December 2024.According to postoperative mechanical ventilation time,they were divided into prolongation group(28 cases,mechanical ventilation time≥72 h)and non-prolongation group(56 cases,mechanical ventilation time<72 h).The clinical data,score of risk adjustment for congenital heart surgery(RACHS-1),levels of ScvO2,and Lac and SaO2 in the two groups were compared.The risk factors of postoperative mechanical ventilation time were analyzed by multivariate logistic regression analysis,and predictive value of ScvO2,Lac and SaO2 for prolonged mechanical ventilation time was analyzed by ROC curves.The clinical outcomes in the two groups were recorded.Results There were significant differences in age,preoperative pneumonia,RACHS-1 grading,and levels of ScvO2,Lac and SaO2 among children with different mechanical ventilation time(P<0.05).Multivariate logistic regression analysis showed that ScvO2,Lac and SaO2 were independent influencing factors of postoperative mechanical ventilation time(P<0.05).ROC curves analysis showed that area under the curve(AUC)values of ScvO2,Lac,SaO2 and combined detection for predicting prolonged postoperative mechanical ventilation were 0.846,0.863,0.839 and 0.917,and the best cut-off values were 67.64％,1.51mmol/L and 96.06％,respec-tively(P<0.05).The failure rate of weaning in the prolongation group was higher,and stay time in PICU and actual length of hospital stay were longer than those in non-prolongation group(P<0.05).Conclusion The levels of ScvO2,Lac and SaO2 are related to mechanical ventilation time in CHD infants.They are all independent risk factors affecting prolonged mechanical ventilation and can be applied as auxiliary detection indexes to predict the prolonga-tion of mechanical ventilation in clinical practice.

Objective:To investigate the molecular mechanism of miR-886-5p targeting BCL-2-associated X protein (BAX) to inhibit the proliferation, migration, and invasion of liver cancer cells.Methods:mRNA expression data of HCC patients were obtained from the Starbase database, including 370 liver cancer samples and 50 normal liver tissue samples adjacent to the cancer. Analyze the expression of miR-886-5p in the previously obtained data and investigate the relationship between miR-886-5p and BAX in liver cancer samples. After transfection of the corresponding plasmids into Huh7 and HepG2 cells, the following groups were established. Analyze the interaction between miR-886-5p and BAX in vitro, detect the protein expression by Western blotting, and verify the targeting relationship between the two by dual luciferase reporter gene assay.Results:Starbase database analysis found that the standardized expression level of miR-886-5p in 370 liver cancer samples was lower than that in normal liver tissue samples (0.12±0.07 vs. 0.73±0.27, t=-15.71, P<0.001), and the expression level of miR-886-5p was positively correlated with the expression level of BAX ( r=0.152, P=0.003). qRT-PCR analysis showed that the expression level of miR-886-5p in HL-7702 cells was higher than that in Huh7 (4.57±0.06 vs. 1.61±0.40, t=32.48) and HepG2 (4.57±0.06 vs. 1.03±0.13, t=143.9), and the expression level of BAX in HL-7702 cells was higher than that in Huh7 (4.01±0.12 vs. 1.28±0.09, t=82.20) and HepG2 (4.01±0.12 vs. 1.30±0.11, t=80.76), the differences were statistically significant (all P<0.001). The proliferation, migration, and invasion abilities of Huh7 and HepG2 cells decreased after transfection with miR-886-5p mimics, while the expression levels of BAX at the mRNA and protein levels increased. However, after inhibiting the expression of miR-886-5p, the above indicators of cells were the opposite, and the dif-ferences were statistically significant (all P<0.05). The viability, EdU positivity rate, cell migration rate, and number of transmembrane cells in the miR-886-5p+ BAX group were lower than those in the BAX group, and the relative expression levels of miR-886-5p, BAX mRNA, and BAX protein were higher than those in the BAX group. However, the above indicators in the Sponge+ BAX group showed opposite trends, and all differences were statistically significant (all P<0.05). There was a targeted binding site between miR-886-5p and BAX. Conclusion:Both miR-886-5p and BAX are downregulated in liver cancer, and miR-886-5p inhibits the proliferation, migration, and invasion of liver cancer cells by targeting BAX.

Objective To investigate the expression of JNK2 in hyperoxic lung injury ,and explore the protective effect of sub-stance P (SP) on hyperoxic lung injury and its mechanism .Methods Sixteen SD rats were divided into four groups with 4 rats in each group :room-air and f 9 g/L saline group (group A) ,room-air and SP group (group B) ,hyperoxia injury group and f 9 g/L sa-line group (group C) ,hyperoxia injury group and SP group (group D) .Rats ingroup B and D were injected with SP 1 × 10-6 mol · L -1 · kg -1 · d-1 intraperitoneally ,group A and group C were injected with an equal volume of 9 g/L saline .The animals were sac-rificed after 14 days of experiment .Lung pathology was examined with light microscopy ,lung wet/dry (W/D) ratio and the level of SP and PCNA and TUNEL in lung were evaluated .The Superoxide dismutase (SOD) ,malondialdehyde (MDA) and glutathione (GSH) level were assayed respectively in lung tissue .The quanlity of JNK2 protein was detected by Western blot analysis .Results Compared with group A ,the high oxygen groups all had different degrees of lung injury ,,while the lung pathological pictures in group D was improved significantly compared with group C .Western blot showed that level of JNK2 in group C was obviously higher than that of group A ;After the intervention ,level of JNK2 in group D was lower than that of group C .The lung W/D retio , TUNEL and PCNA expression and distribution SOD ,MDA and GSH was consistent with the trends of JNK2 protein expression . Conclusion High oxygen stress can activate damage lung tissue JNK 2 activity ;SP protection mechanism of high oxygen lung injury may be induced by cutting high oxygen activation of JNK 2 to inhibit oxidative damage .

Objective To evaluate the modularized operative process during video-assisted thoracoscopic esophagectomy for esophageal cancer.Methods The clinical data of 45 patients with esophageal cancer who were admitted to the Daping Hospital from December 2011 to December 2012 were retrospectively analyzed.The influence of modularized operative process on the intra-and post-operative condition and short-term complications after videoassisted thoracoscopic esophagectomy + esophagogastric anastomosis were analyzed to investigate the efficacy and value of modularized operative process.Patients received video-assisted thoracoscopic and laparoscopic resection of esophageal carcinoma or thoracoscopic resection of esophageal carcinoma + gastric mobilization.Thoracoscopic esophageal mobilization and mediastinal lymph nodes dissection were done according to the modularized operative process:(1) Pulmonary ligament mobilization and groups 8L and 9 lymph nodes dissection.(2) Mobilization of the esophagus under the arcus venae azygos.(3) Mobilization of esophagus above the arcus venae azygos.(4) Transection of the arcus venae azygos.(5) Complete removal of thorax esophgus.(6) Ligation of thoracic duct.(7) Dissection of groups 4,5,7,10 and 2L lymph nodes.All the patients were followed up via phone call or mail till February 2013.Patients received thoracoabdominal computed tomography and gastrofiberscopy to detect tumor recurrence or metastasis every 3 months within the first year after the operation,and they were re-examinated every half year at 1 year later.Results Of the 45 patients,29 received video-assisted thoracoscopic and laparoscopic resection of esophageal carcinoma and 16 received video-assisted thoracoscopic resection of esophageal carcinoma + gastric mobilization.The length of the tumor was (4.2 ± 2.5) cm.The numbers of patients in AJCC T1,T2,T3 and T4 stages were 7,14,15 and 9,and the number of patients with AJCC N0,N1,N2,N3 stages were 23,13,7,2,respectively.The intrathoracic operation time,total operation time,volume of intraoperative blood loss,number of lymph node resected and postoperative duration of hospital stay were (72 ± 13)minutes,(249 ± 39) minutes,(183 ± 62) ml,27 ± 7,(18 ± 7) days,respectively.Two patients were transferred to open surgery.No patient died postoperatively,and 11 complications were detected after the operation.Six patients were complicated with cervical anastomotic fistula,4 with anastomotic stricture and 3 with hoarseness.Forty-five patients were followed for 1.5-14.0 months with the median follow-up time of 8 months.One patient died of upper gastrointestinal hemorrhage at postoperative month 12,and 1 died of multi-organ dysfunction syndrome at postoperative month 8.The remaining 43 patients survived.Conclusions The modularized operative process for thoraeoscopic esophagectomy is safe and effective,its short-term efficacy is satisfactory.