Objective:To study the early use of inhaled nitric oxide (iNO) as a rescue therapy in extremely premature infants (EPIs) with refractory hypoxic respiratory failure (HRF).Methods:Between January 2021 and December 2021, EPIs with refractory HRF receiving iNO within the first week of life in our NICU were enrolled. Their clinical characteristics and outcomes were retrospectively analyzed.Results:A total of 11 EPIs were included with 5 males and 6 females. The median gestational age (GA) was 24(22.6, 25.2) weeks. The median birth weight (BW) was 580(490, 770) g. The most common primary diagnoses were moderate/severe respiratory distress syndrome (RDS) (5/11) and early-onset sepsis (3/11). The median age starting iNO therapy was 6.5(4.5, 34.0)h and the median duration of iNO was 24(12, 36)h. The median iNO starting dose was 5(5, 8) ppm and the therapeutic range was 5-20 ppm. Therapeutic efficacy was defined as ≥30% FiO 2 reduction after 6 h of iNO treatment. The treatment was effective in 8 cases. The oxygenation index (OI) decreased more than 10% from baseline 1 h after initiation in 9 patients and in all 11 patients after 12 h of iNO. The reduction of OI was more prominent in EPIs with a higher OI at baseline. Of the 11 patients, 8 survived, 1 died and 2 abandoned further treatments. Conclusions:As an early rescue therapy for EPIs with refractory HRF, iNO can improve oxygenation without obvious short-term adverse effects.

Objective:To study the epidemiological characteristics and pathogen status of infection of patients with herpetic pharyngitis in eastern region of Chengdu in 2022, in order to provide experimental basis for scientific prevention and control of herpetic pharyngitis.Methods:Information and fecal specimens were collected from patients diagnosed with herpetic angina at sentinel monitoring hospitals in eastern region of Chengdu from January to December 2022, their epidemiological characteristics were analyzed, real-time fluorescence quantitative PCR (RT-PCR) and semi nested RT-PCR (RT-snPCR) were used to detect and identify enterovirus subtypes.Results:Among the 236 cases of herpetic angina, the age of the affected children was mainly 0-9 years (99.15%), with children aged below 3 years accounting for 75.85% of the total cases, children in the 1-year-old group had the highest constituent ratio, accounting for 47.88% of the total cases; The virus detection rate in the 2-year-old group was higher than that in the 0-year-old group ( χ2=5.945, P=0.015). There were 142 male infected cases (60.17%) and 94 female cases (39.83%); there was a statistically significant difference in the virus detection rate between the male group (91.55%) and the female group (78.72%) ( χ2=7.938, P=0.005). In the seasonal distribution, the summer group had the highest constituent ratio (40.25%), while the winter group had the lowest constituent ratio (11.86%), The composition ratio of the summer group was significantly higher than that of the other groups, and the differences were statistically significant ( χ2=10.393, 19.199, 49.358, all P<0.001). The virus detection rate in the summer group was significantly higher than that in the spring group and the winter group ( χ2=16.951, 4.592, both P<0.05). The RT-PCR result showed that a total of 204 out of 236 children with herpetic angina were virus positive, with a detection rate of 86.44% (204/236), including coxsackievirus A (CV-A) 6 (22.55%), CV-A16 (5.88%), CV-A2 (2.94%), enterovirus type A71 (EV-A71) (2.94%), and other enteroviruses (65.69%). The RT-snPCR result showed that five viruses were identified from other enteroviruses, including CV-A4 (8.33%), CV-A5 (6.86%), CV-A10 (12.25%), CV-A12 (24.02%), and coxsackievirus B3 (CV-B3) (6.86%); another 15 positive samples of enterovirus were not successfully classified. We selected 9 strains of the virus in this study and 30 reference sequences from the NCBI database to. Conclusions:Herpetic angina in eastern region of Chengdu in 2022 is mainly found in male children under 3 years of age, and was concentrated between April and June. It has been confirmed that CV-A12 and CV-A6 were more common in intestinal viruses, and the 9 strains isolated in this study were homologous to multiple isolates.

Objective:To analyze clinical features, prognosis and risk factors of bronchopulmonary dysplasia (BPD) associated pulmonary hypertension (PH).Methods:Clinical data of 338 infants with BPD were collected from the neonatal intensive care unit (NICU) in Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University between January 2016 and December 2018. These infants were divided into PH group and non-PH group. The clinical features and prognosis were compared between these two groups by Chi-square test or nonparametric test. Risk factors for BPD-PH were analyzed with binary logistic regression model.Results:Among the 338 BPD infants, 314 had no PH (92.9%) and 24 had PH (7.1%), with an average gestational age of (27.1±1.8) weeks, and 206 were males and 132 females.PH infants had younger gestational age ((26.4±2.1) vs. (27.2±1.7) weeks, t=2.201, P=0.028) and lower birth weight ((798±255) vs. (1 003±240) g, t=4.030, P<0.01), compared to non-PH infants. Besides, duration of mechanical ventilation and non-invasive positive pressure ventilation were higher in PH group than that in non-PH group (14.3 (2.1, 43.7) vs. 0.5 (0, 4.7) d, Z=-4.553, P<0.01; 30.0 (22.5, 64.2) vs. 15.0 (7.0, 26.0) d, Z=-4.838, P<0.01). The proportions of maternal hypertension, small for gestational age (SGA), late onset sepsis, ventilator associated pneumonia, hemodynamically significant patent ductus arteriosus (hsPDA), patent ductus arteriosus (PDA) requiring ligation, severe BPD and severe extrauterine growth retardation (EUGR) were higher in PH group than those in non-PH group ((20.8% (5/24) vs. 6.4% (20/314), 33.3% (8/24) vs. 7.6% (24/314), 54.2% (13/24) vs. 7.3% (23/314), 25.0% (6/24) vs. 6.1% (19/314), 75.0% (18/24) vs. 39.2% (123/314), 45.8% (11/24) vs. 1.9% (6/314), 66.7% (16/24) vs. 7.3% (23/314), 75.0% (18/24) vs. 45.5% (143/314), all P<0.05). Multivariate logistic regression analysis showed that maternal hypertension ( OR=12.950, 95 %CI: 1.740-96.385), severe bronchopulmonary dysplasia ( OR=10.160, 95 %CI: 2.725-37.884), SGA ( OR=4.992, 95 %CI: 1.432-16.920), PDA requiring ligation ( OR=19.802, 95 %CI: 3.297-118.921), severe EUGR ( OR=20.316, 95 %CI: 2.221-185.853) were independent risk factors of BPD associated PH. In the 24 infants with PH, all 7 mild PH infants and 8 moderate PH infants survived, while 4 out of 9 severe PH infants died. Among the survivors, the longest duration of oxygen therapy was up to the corrected gestational age of 1 year and 2 months. Conclusions:PH is a severe complication of BPD, and associated with higher mortality and poor prognosis. Echocardiography screening and regular post-discharge follow up are recommended for BPD infants with risk factors of PH.

Objective To analyse the risk factors associated with spontaneous intestinal perforation (SIP) in extremely premature infants/extremely low birth weight infants. Method From January 2015 to December 2018, infants with gestational age (GA)<28 weeks or birth weight (BW)<1000 g admitted to our neonatal intensive care unit were enrolled to the retrospective nested case-control study.The clinical data of SIP infants (SIP group) and infants with the same GA but without SIP (control group) were randomly selected and compared. Multivariable Logistic regression was used to analyse the risk factors of SIP. Result A total of 409 extremely premature infants/extremely low birth weight infants were born during the study period. Among them, 25 SIP infants and 55 controls were enrolled. The incidence of SIP in infants with GA 22～25 weeks was 11.8％(16/136), which is higher than infants with GA 26～27 weeks (2.0％, 5/247) (χ2=16.057, P<0.001). The incidence of SIP in infants with BW 400～749 g was 13.0％(14/108), which is higher than infants with BW 750～999 g (3.4％, 8/236) (χ2=11.343, P=0.001). Multivariate Logistic regression analysis showed that twins (OR=4.153, 95％CI 1.392～12.384, P=0.011), umbilical veins catheterization (OR=15.942, 95％CI 1.026～247.789, P=0.048) and ibuprofen use within 3 days after birth (OR=15.387, 95％CI 1.519～155.883, P=0.021) were independent risk factors of SIP. Conclusion The smaller the GA and BW, the higher the incidence of SIP. Twins,umbilical veins catheterization and ibuprofen use early after birth may be independent risk factors of SIP.

Objective: To explore risk factors for cognitive impairment among elderly patients. Methods: There were 257 qualified subjects recruited, a case-control study was performed by collecting data of Mini Mental State Examination, carotid artery color Doppler flow imaging, biochemical tests, personal information on ages, medical histories, smoking as well as physical exercise among the recruited elderly in-patients/out-patients. A logistic regression was conducted to screen main effects of variables on occurrences of cognitive impairment. Results: Using logistic regression, the carotid intima-media thickness was found to be a significant risk factor (P<0.001) with larger regression coefficients (15.105 - 22.065) for the occurrence of cognitive impairment among elderly; about 71％ -78％ and 4％ decrease in risks of dementia occurrence for every 1 pg/mL serum free triiodothyronine and lkg body weight increase. Conclusion: The increase in carotid intima-media thickness is a significant risk factor for the occurrence of cognitive impairment among elderly patients. The decrease in serum free triiodothyronine and body weight are the related factors to increase risk for dementia.

Oleanolic acid was chemically modified to improve its interaction with bovine serum albumin,thus to increase the mutual binding ability.As a lead compound,oleanolic acid reacted with Jones-reagent,then methyl iodide and finally hydroxylamine to obtain four different derivatives.Their structures were confirmed by IR and 1H NMR analysis.The interaction between these derivatives and bovine serum albumin and the effect of temperature and trace metal ions as Cu2+ and Co2+ on the interaction were investigated by fluorescence spectroscopy.All these derivatives exhibited improvement of the interaction compared with oleanolic acid with 16 times stronger for OA2.The interaction also increased with the presence of trace metal ions as Cu2+ and Co2+.These results indicate that chemical modification can improve the interaction of oleanolic acid with bovine serum albumin.

Aberrant expression of annexin A2-S100A10 heterotetramer (AIIt) associated with PML/RARα fusion protein causes lethal hyperfibrinolysis in acute promyelocytic leukemia (APL),but the mechanism is unclear.To facilitate the investigation of regulatory association between ANXA2 and promyelocytic leukemia/retinoic acid receptor α (PML/RARα) fusion protein,this work was performed to determine the transcription start site of ANXA2 promoter with rapid amplification of S'-cDNA ends analysis.Zinc-induced U937/PR9 cells expressed PML/RARα fusion protein,and resultant increases in ANXA2 transcripts and translational expressions of both ANXA2 and S100A10,while S100A10 transcripts remained constitutive.The transactivation of ANXA2 promoter by PML/RARα fusion protein was 3.29 ± 0.13 fold higher than that by control pSG5 vector or wild-type RARα.The overexpression of ANXA2 in U937 transfected with full-length ANXA2 eDNA was associated with increased S100A10 subunit,although S100A10 transcripts remained constitutive.The tPA-dependent initial rate of plasmin generation (IRPG) in zinc-treated U937/PR9 increased by 2.13-fold,and cell invasiveness increased by 27.6％.Antibodies against ANXA2,S100A10,or combination of both all remarkably inhibited the IRPG and invasiveness in U937/PR9 and NB4.Treatment of zinc-induced U937/PR9 or circulating APL blasts with all-trans retinoic acid (ATRA) significantly reduced cell surface ANXA2 and S100A10 and associated reductions in IRPG and invasiveness.Thus,PML/RARα fusion protein transactivated the ANXA2 promoter to upregulate ANXA2 and accumulate S100A10.Increased AIIt promoted IRPG and invasiveness,both of which were partly abolished by antibodies against ANXA2 and S100A10 or by ATRA.

Objective To provide theoretical reference and practical guidance for clinical nursing through Meta-analysis method which is applied to explore the conventional nursing method and improvement intervention nursing methods to prevent liver transplantation the effect of pressure sores. Methods Databases including the Cochrane Library, PubMed, EMbase, OVID, China National Knowledge Infrastructure ( CNKI) , Wanfang Data and CBM, were searched by computer to collect the randomized controlled trails and quasi randomized controlled trials about the conventional nursing method and improvement intervention nursing methods for pressure sores of liver transplantation. Chinese Journal of Nursing, Chinese Journal of Modern Nursing, Journal of Nurses Training were searched by hand.The retrieval time was from February First, 1966 to February First, 2016. The studies were screened according to inclusion and exclusion criteria. The data were extracted and the quality was evaluated by two reviewers independently. Meta-analysis was conducted by RevMan 5.2 software.Results A total of 12 controlled trails involving 1 245 patients were included in this research, and there were 623 patients in the intervention group, and 622 patients in the control group. The results of meta-analysis showed that:the rate of pressure scores in intervention group was lower than the control group [ OR=0.25,95% CI(0.16,0.38),P<0.01],[RR=0.29,95% CI(0.20,0.42),P<0.01]. The overall severity of pressure scores in the intervention group was significantly lower than that in the control group[OR=0.34,95%CI(0.16,0.73),P<0.01],[RR=0.57,95% CI(0.37,0.87),P<0.01].Conclusions In the intervening group the rate of pressure ulcer and the overall severity of pressure scores was significantly lower than that in the control group, which shows that the intervention nursing method can effectively reduce the occurrence and stage of pressure scores in liver transplant patients and reduce the severity of pressure scores.

OBJECTIVETo explore the role of ZNF217 in regulating cell proliferation, migration and invasion in glioma cells.

METHDOSA lentivirus-mediated shRNA-ZNF217 vector was infected into glioma U251 cells, and the interference efficiency was examined by Western blotting. MTT assay, flow cytometry, Transwell assay, and Boyden chamber assay were used to analyze the changes in cell proliferation, migration and invasion. Western blotting was used to detect the changes in ZNF217-related genes in the cells.

RESULTSshRNA-ZNF217 transfection significantly inhibited the expression of ZNF217 in U251 cells and suppressed the cell migration, invasion, growth, and cell cycle transition. ZNF217 knockdown downregulated the expression of pPI3, pAKT, C-Myc, and the mesenchyme biomarker N-cadherin, and stimulated the expression of the epithelium biomarker E-cadherin.

CONCLUSIONZNF217 promotes cell migration, invasion, and growth by activating PI3K/AKT signal to upregulate C-Myc and by modulating the genes associated with epithelial-mesenchymal transition in glioma cells.

Cadherins ; metabolism ; Cell Cycle ; Cell Line, Tumor ; Cell Movement ; Cell Proliferation ; Epithelial-Mesenchymal Transition ; Genetic Vectors ; Glioma ; pathology ; Humans ; Lentivirus ; Neoplasm Invasiveness ; RNA, Messenger ; RNA, Small Interfering ; genetics ; Trans-Activators ; genetics ; Transfection

Objective To explore the role of ZNF217 in regulating cell proliferation, migration and invasion in glioma cells. Methods A lentivirus-mediated shRNA-ZNF217 vector was infected into glioma U251 cells, and the interference efficiency was examined by Western blotting. MTT assay, flow cytometry, Transwell assay, and Boyden chamber assay were used to analyze the changes in cell proliferation, migration and invasion. Western blotting was used to detect the changes in ZNF217-related genes in the cells. Results shRNA-ZNF217 transfection significantly inhibited the expression of ZNF217 in U251 cells and suppressed the cell migration, invasion, growth, and cell cycle transition. ZNF217 knockdown downregulated the expression of pPI3, pAKT, C-Myc, and the mesenchyme biomarker N-cadherin, and stimulated the expression of the epithelium biomarker E-cadherin. Conclusion ZNF217 promotes cell migration, invasion, and growth by activating PI3K/AKT signal to upregulate C-Myc and by modulating the genes associated with epithelial-mesenchymal transition in glioma cells.