Objective To investigate the treatment of neonatal respiratory distress syndrome by less invasive surfactant administration(LISA)clinical efficacy,complications and influence on blood gas analysis.Methods A total of 100 cases of neonatal respiratory distress syndrome requiring pulmonary surfactant(PS)tracheal injection therapy and admitted to the Jinhua Central Hospital between December 1st 2019 and August 1st 2022 were randomly assigned into treatment group(50 cases)and control group(50 cases).The treatment group of children received PS treatment using LISA technology,while the control group of children received PS treatment using tracheal intubation tracheal instillation PS extubation followed by intubation-surfactant-extubation technology.The clinical treatment effect,blood gas analysis,non-invasive ventilation time,length of hospitalization,and incidence of complications were compared between the two groups.Results The total effective rate of treatment in the treatment group was higher than that in the control group;After 1 hour of PS treatment,the oxygen partial pressure and blood oxygen saturation of the treatment group were higher than those of the control group,while the carbon dioxide partial pressure was lower than that of the control group.The non-invasive assisted ventilation time of the treatment group was shorter than that of the control group.The incidence of bronchopulmonary dysplasia was lower than that of the control group.Their difference were statistically significant(P<0.05).Conclusion The use of LISA technology for PS treatment of NRDS can improve blood gas indicators,shorten non-invasive ventilation time,improve diagnostic and therapeutic effects,reduce the risk of bronchopulmonary dysplasia,and do not increase the incidence of complications such as tracheal mucosal injury and pulmonary hemorrhage in children.

Objective To construct a vimentin glycosylated mutant plasmid,and to study its impact on rat adrenal chromaffin cell (PC12) cell differentiation.Methods The vimentin glycosylated mutant plasmid was constructed,and the gel electrophoretic was performed and the sequencing identification was performed. The empty plasmid pcDNA3.1b (control group),vimentin plasmid (Vim group) and vimentin glycosylated mutant plasmid (Vim mut group) were used to transfect PC12 cells,which were cultured for 0,3 d in the con-dictions of treatment and non-treatment of exogenous oligosaccharides (Cyclo-ManN pro) respectively,and the cell differentiation records and quantitative analysis (the cell average neurite length and differentiated neu-rite cells percentage) were performed.Results A recombinant plasmid containing a glycosylation site muta-tion site 19(T-G),97(A-G),100(T-G) was successfully constructed (about 1404 bp in size).Before and after Cyclo-ManN pro treatment,the average neurite length of PC12 cells and the percentage of differentiated neu-rite cells in the Vim group were greater than those in the control group and the Vim mut group[(61.98±19.03)μm vs.(51.09±14.45)μm,(51.49±14.78)μm,(6.60±0.25)％ vs. (4.27±0.18)％,(4.76±0.33)％;(78.01±18.31)μm vs. (69.98±12.85)μm,(68.45±13.84)μm,(10.62±0.25)％ vs. (8.11±1.22)％,(5.89±0.60)％],the difference was statistically significant (P<0.05).Conclusion The glycosyla-tion modification of vimentin could be used for PC12 cell differentiation.

Objective: To assess whether carbon monoxide (CO) poisoning increases the incidence of dementia. Methods: We searched the Cochrane Library, PubMed, and EMBASE from inception to 14 August 2022. Two authors independently selected studies, assessed the quality of included studies, and extracted data. Any disagreement was resolved by discussion with a third author. Only cohort study with an enough follow-up period was included for systematic reviews and meta-analysis. Results: Thirty-three full texts were initially searched, but only three studies met our inclusion criteria, and they were comprised of 134,563 participants who were initially free of dementia. The follow-up period ranged from 9 to 12 years. We found that CO poisoning increased the risk of dementia incidence (adjusted hazard ratio 2.61, 95% confidence interval 1.56 to 4.36, p=0.0003). Subgroup analysis showed that the increased dementia risk was significant in males but not in females, and the highest risk was in young age group, followed by in middle age group, but not in the old one. Conclusion Overall the evidence from prospective cohort studies supported a link between CO exposure and an increased dementia risk, although all the included studies were limited to Taiwanese population.

Objective:To summarize the scope of research on the application of the continuous nursing network platform for premature infants and caregivers discharged from the Neonatal Intensive Care Unit (NICU) , so as to provide reference for future research and practice.Methods:The method of subject words, keywords and Boolean logic was used to retrieve research on the application of NICU's continuous nursing network platform for discharged premature infants and their caregivers in PubMed, Web of Science, Embase, Cochrane Library, China National Knowledge Infrastructure (CNKI) , WanFang Data, VIP and China Biomedical Literature Database. The retrieval time limit was from the establishment of the database to February 14, 2022.Results:A total of 23 articles were included. The content elements of continuous nursing based on network platform included the professional knowledge and nursing skills guidance, peer support, contact with professionals, information and decision-making support, and psychological support. Application forms included mobile applications, website platforms and online videos. The types of outcome indicators were mainly the effect incaregivers and premature infants, the quality of parent-child interaction, breastfeeding and feasibility evaluation. Nursing had positive effect and feasibility.Conclusions:Continuous nursing based on the network platform has achieved positive effects on NICU discharged premature infants and caregivers, and the combination of multiple elements, personalized customization, and multidisciplinary participation are in line with the needs of caregivers. Future research needs to focus on promoting the family function of premature infants, further develop the content of continuous nursing suitable for each child's development stage, explore a safer network service supervision mode and conduct cost-benefit evaluation.

ObjectiveTo investigate the effect of betulinic acid （BA） on apoptosis and autophagy of human colorectal cancer SW620 cells and the regulatory role of phosphatidylinositol 3-kinase （PI3K）/protein kinase B （Akt）/mammalian target of rapamycin （mTOR） signaling pathway. MethodCell viability was detected by methyl thiazolyl tetrazolium （MTT） colorimetry to determine the optimal administration time and dosage for subsequent experiments. Four groups were designed， including blank group and low-， medium-， and high-dose BA groups. Hematoxylin-eosin （HE） staining was conducted for the observation of SW620 cell morphology， and annexin-V/propidium iodide double staining for the determination of apoptosis rate in SW620 cells. Hoechst33258 staining and MDC staining were used for the observation of apoptosis and autophagy， respectively. Western blotting was employed to determine the protein levels of B-cell lymphoma/leukemia-2（Bcl-2）-associated X protein （Bax）， aspartate proteolytic enzyme-9 （Caspase-9）， activated aspartate proteolytic enzyme-3 （cleaved Caspase-3）， microtubule-associated protein 1 light chain 3 （LC3）， the mammalian homolog of yeast Atg6 （Beclin-1）， p62， phosphorylated PI3K （p-PI3K）， phosphorylated Akt （p-Akt）， and phosphorylated mTOR （p-mTOR） in SW620 cells. ResultBA inhibited the activity of SW620， HT29， and HCT116 cells in a concentration- and time-dependent manner. The cells treated with BA for 48 h had lower viability than those treated for 24 h （P<0.05， P<0.01）. The half maximal inhibitory concentration (IC₅₀） value of BA at the time point of 48 h was also lower than that at the time point of 24 h （P<0.01）， and that for SW620 cells was the minimum. BA induced the apoptosis in a concentration-dependent manner and increased the autophagosomes. Compared with the blank group， BA increased the apoptosis rate （P<0.01）， up-regulated the protein levels of Bax， Caspase-9， cleaved Caspase-3， and LC3 Ⅱ （P<0.05， P<0.01）， and down-regulated the protein levels of p62， p-Akt， p-PI3K， and p-mTOR （P<0.01）. Additionally， medium- and high-dose BA up-regulated the protein level of beclin-1 （P<0.01）. ConclusionBA may inhibit the activity of SW620 cells by hindering the PI3K/Akt/mTOR signaling pathway to induce cell apoptosis and autophagy.

Objective:To evaluate the clinical efficacy and safety of endoscopic submucosal dissection (ESD) for treatment of duodenal lesions.Methods:A retrospective analysis was performed on the data of 45 patients with 46 duodenal lesions who underwent ESD at the Second Xiangya Hospital of Central South University from January 2011 to May 2019. The lesion features, en bloc resection rate, complete resection rate, complications, postoperative pathology and recurrence were assessed.Results:Among the 45 patients, 20 were males and 25 were females, with age of 52.0±11.8 years. Of the 46 lesions, 31 (67.4%) were located in the duodenal bulb, 12 (26.1%) in the descending part, and 3 (6.5%) at the junction of bulb and descending part. The diameter of the lesions was 2.4±1.9 cm. There were 14 (30.4%) lesions originated from mucosal layer, 29 (63.1%) from submucosal layer, and 3 (6.5%) from muscularis propria.Postoperative pathology showed 11 (23.9%) cases of Brunner gland tumors, 9 (19.6%) neuroendocrine tumors, 5 (10.9%) ectopic pancreas, 5 (10.9%) lipomas, and 16 (34.8%) other pathological patterns. All 45 patients with 46 lesions underwent ESD successfully, and the en bloc resection rate was 100.0% (46/46), complete resection rate was 91.3% (42/46). Intraoperative bleeding occurred in 1 case (2.2%), which was successfully treated by endoscopy. One (2.2%) delayed perforation occurred and was treated by surgical intervention. Electrocoagulation syndrome occurred in 1 case (2.2%), which was relieved after conservative medical therapy. Two cases received further surgery after ESD. The mean hospital stay was 6.2 days (ranged 2-21 days) and no death occurred. Forty-one cases were followed up for 1-78 months, with mean time of 30 months. During the follow-up period, local recurrence occurred in 1 patient (2.4%).Conclusion:ESD is an effective and safe treatment for duodenal lesions and has a good clinical practical value.

ABSTRACT OBJECTIVE：To compare the effectiveness and economics of peramivir and oseltamivir in the treatment of influenza complicated with febrile seizures in children. METHODS：In retrospective study，152 children with influenza complicated with febrile seizures were collected from our hospital during Dec. 2018 to Mar. 2019.They were divided into peramivir group（81 cases） and oseltamivir group （71 cases）. Fever remission time， medication duration， hospital duration， clinical efficacy （determined by convulsion，cough，nasal obstruction，runny nose，sore throat，etc.），the incidence of rash，the number of children with combined antibiotic and TCM were compared between 2 groups. Cost-effectiveness analysis was used to evaluate cost-effectiveness ratio（CER）and incremental cost-effectiveness ratio（ICER）of medication regimen in 2 groups. The sensitivity analysis of the effect and total cost were carried out with Logistic regression and multiple linear regression respectively through CER and ICER calculated by reducing 15％ drug price. RESULTS：There was no statistical significance in fever remission time， medication duration，hospitalization duration，the incidence of rash and proportion of children with combined antibiotics between 2 groups（P＞0.05）. There was statistical significance in proportion of children with combined TCM and clinical effect，and the proportion of children with combined TCM in peramivir group was significantly lower than oseltamivir group（P＜0.001）. Clinical effect of peramivir group was significantly better than that of oseltamivir group（P＝0.021）. Total cost of peramivir group and oseltamivir group were 5 442.84 yuan/person and 5 571.71 yuan/person（P＝0.795）；CER of them were 54.47 and 56.51；ICER of peramivir group was － 89.38. The results of sensitivity analysis were consistent with those of basic analysis.CONCLUSIONS： Compared with oseltamivir，peramivir is more effective and less costly for children with influenza and febrile seizures.

Objective: To investigate the effect of intracoronary administration of nicorandil prior to primary percutaneous coronary intervention (PPCI) on myocardial perfusion and short-term clinical outcomes in patients with ST-segment elevation myocardial infarction (STEMI). Methods: A total of 158 patients with STEMI undergoing PPCI from January 2014 to December 2015 in Fuzhou General Hospital were enrolled consecutively in this prospective controlled randomized trial. Patients were assigned into three groups with random number table: the nicorandil group (patients received intracoronary administration of 6 mg nicorandil after guide wire or balloon successfully crossed the target lesion, n=53), the nitroglycerin group (patients received intracoronary administration of 300 μg nitroglycerin after after guide wire or balloon successfully crossed the target lesion, n=52) and the control group(patients received routine treatment, n=53). The primary outcomes were myocardial perfusion, including the levels of corrected TIMI frame count (cTFC), and the incidence of no reflow or slow flow after PPCI. The secondary outcomes included the incidence of major adverse cardiovascular events (MACE) during hospitalization (all-cause death, reperfusion arrhythmia within 2 hours after PPCI, angina within 24 hours after PPCI, new heart failure or worsening cardiac function, and repeat revascularization) and within 3 months of follow-up (all-cause death, nonfatal myocardial infarction, repeat revascularization, post-infarction angina, and re-hospitalization for congestive heart failure). Results: The age of enrolled patients was (62.9±11.3) years old, and 130 cases (82.3%) of them were male. The median time of symptom-onset to balloon was 4.50 (3.20, 6.43) hours. There were significantly difference in cTFC immediately after PPCI((21.68±7.43)frames, (24.74±8.66)frames, and(27.06±10.40)frames), incidence of no reflow or slow flow after PPCI(5.7%(3/53), 13.5%(7/52), and 22.6%(12/53)), ST-segment resolution at 2 hours after procedure(90.6%(48/53), 84.6%(44/52), and 74.5%(38/53)), and reperfusion arrhythmia at 2 hours after procedure(15.1%(8/53), 36.6%(19/52), and 34.0%(18/53)) among the 3 groups(P<0.01 or 0.05). In the multivariate logistic regression models, intracoronary administration of nicorandil could lower the cTFC level (OR=0.17, 95%CI 0.10-0.41, P=0.001), acted as a protecting factor on lowering the incidence of no reflow or slow flow (OR=0.13, 95%CI 0.02-0.96, P=0.045) and reperfusion arrhythmia (OR=0.26, 95%CI 0.09-0.74, P=0.012), as well as facilitating the ST-segment resolution at 2 hours after procedure (OR=4.62, 95%CI 1.14-18.82, P=0.033). However, observed parameters were similar between intracoronary administration of nitroglycerin group compared with control group (all P>0.05). MACE within 3 months of follow-up were similar among the 3 groups(all P>0.05). Conclusion Intracoronary administration of nicorandil prior to balloon dilation can significantly improve the myocardial perfusion and reduce the occurrence of reperfusion arrhythmia during PPCI for STEMI, but does not affect the short-term prognosis in STEMI patients.

Objective To investigate the influence of portal hypertension (PHT) on the postoperative complications after hepatectomy for patients with hepatocellular carcinoma (HCC). Methods Clinical data of 152 HCC patients undergoing hepatectomy in Sun Yat-sen University Cancer Center from March 2003 to October 2005 were retrospectively analyzed. The patients were divided into the PHT and non-PHT groups. There were 76 patients in the PHT group including 62 males and 14 females, with a mean age of (49±11) years. There were 76 patients in the non-PHT group including 66 males and 10 females, with a mean age of (49±12) years. The informed consents of all patients were obtained and the local ethical committee approval had been received. After hospitalization, all patients received routine examination. The incidence of postoperative complications in two groups was observed and the independent risk factors for postoperative complications were evaluated. Normally distributed data were compared using t test. Non-normally distributed data were compared using Z test. The comparison of rate was conducted using Chi-square test. Independent risk factors for the incidence of postoperative complications were analyzed by Logistic multivariate regression test. Results The incidence of postoperative complications was 42%(32/76) and the liver function-related complications was 36% (27/76) in the PHT group, and were 20% (15/76), 16% (12/76) respectively in the non-PHT group, significant difference was observed between two groups (χ2=8.901, 7.760;P<0.05). No signiifcant difference was observed in the percentage of patients with grade I-II complications between PHT group [75%(24/32)] and non-PHT group [73%(11/15)] (χ2=0.015, P>0.05). No significant difference was observed in the 90-day mortality between PHT group [7%(5/76)] and non-PHT group [3%(2/76)] (χ2=0.599, P>0.05). Logistic regression analysis revealed that PHT complication (OR=3.376, 95%CI:1.564-7.287, P<0.05) and number of tumors>2 (OR=1.984, 95%CI:1.248-3.154, P<0.05) were the independent risk factors for postoperative complications. PHT complication (OR=3.231, 95%CI:1.431-7.298, P<0.05), number of tumors>2 (OR=1.832, 95%CI:1.137-2.952, P<0.05) and intraoperative transfusion > 400 ml (OR=2.776, 95%CI: 1.123-6.864, P<0.05) were the independent risk factors for liver function-related complications. Conclusions PHT can increase the incidences of postoperative complications and liver function-related complications after hepatectomy in HCC patients and is the independent risk factor for both complications. However, PHT will not increase the severity of postoperative complications or postoperative mortality.

Objective To explore the occupational stressors and the coping strategies in the newly-employed nurses and to explore their relationships. Method The survey was done among 193 registered nurses with less than 3 years working experience using the occupational stressor scale for Chinese nurses, the simplified coping strategies questionnaire and a self-designed general demography form. Results The total score on occupational stressors was 2.27 ± 0.56, which was at a common level. Postive and negative coping style were 1.88 ± 0.44 and 1.04 ± 0.51. The stressors together with the dimensions were positively correlated with negative coping strategies (P<0.05). Conclusion Nursing administration should improve work environment, provide enough manpower for patient care, carry out training system to focus on education for newly employed nurses, and provide advice and help for them when they need.