Objective:To establish the pig model of cardiac arrest and resuscitation, and then investigate the protective role of sivelestat (SV) on the heart after resuscitation and its relation with β-catenin signaling pathway.Methods:Twenty-five healthy male white pigs were purchased. The animals were randomly divided into the Sham group ( n=6), cardiopulmonary resuscitation group (CPR, n=10), and CPR+SV group ( n=9). The experimental animal model was established by 9 min of cardiac arrest induced by the method of ventricular fibrillation and then 6 min of CPR in the CPR and CPR+SV groups. At 5 min after successful resuscitation, a dose of 10 mg/kg of SV was infused in a duration of 1h via the femoral vein with a micro-infusion pump in the CPR+SV group. Myocardial function evaluated by the values of stroke volume (SV) and global ejection fraction (GEF) was measured by PiCCO at baseline, and at 0.5, 1, 2, 4 h after resuscitation. The serum concentrations of cardiac injury biomarkers including cardiac troponin I (cTnI) and creatine kinase isoenzymes (CK-MB) were measured by ELISA using blood samples drawn from the femoral vein at baseline, and at 1, 2, 4, and 24 h after resuscitation. The animals were euthanized at 24 h after resuscitation, and then cardiac tissue samples were harvested to measure the protein expression levels of β-catenin, Cyclin D1, c-Myc, cleaved caspase-9, and cleaved caspase-3 by Western blot and the degree of cell apoptosis by TUNEL. Results:Prior to cardiac arrest, myocardial function and cardiac injury biomarkers were maintained at the same levels, and no differences were observed among the three groups (all P> 0.05). After resuscitation, myocardial dysfunction and cardiac injury were observed in the CPR and CPR+SV groups, in which the values of SV and GEF were significantly decreased and meanwhile the serum concentrations of cTnI and CKMB were significantly increased when compared with the Sham group (all P< 0.05). However, myocardial dysfunction and cardiac injury were significantly milder in the CPR+SV group, in which the value of SV at 4h post-resuscitation and the values of GEF starting 1h post-resuscitation were significantly increased, and the serum concentrations of cTnI and CKMB were significantly decreased at 4 and 24 h post-resuscitation when compared to the CPR group (all P< 0.05). Tissue measurements indicated that the change of β-catenin signaling pathway and the occurrence of cell apoptosis were observed in the heart at 24 h post-resuscitation in the CPR and CPR+SV groups, which were indicated by significant increases in the protein expression levels of β-catenin, Cyclin D1, c-Myc, cleaved caspase-9, and cleaved caspase-3, and marked elevation in the index of cell apoptosis when compared with the Sham groups (all P< 0.05). However, the expression levels of proteins mentioned above were significantly decreased in the heart at 24 h post-resuscitation and the index of cell apoptosis was significantly reduced in the CPR+SV group when compared to the CPR group (all P< 0.05). Conclusion:SV has the protective role in alleviating post-resuscitation myocardial dysfunction and cardiac injury, in which the protective mechanism is possibly related to the alleviation of cell apoptosis through the inhibition of β-catenin signaling pathway activation.

Objective To investigate the differences in clinical and radiographic features between severe influenza A H1N1 and H3N2 in children.Methods The clinical and radiographic data of children diagnosed with severe influenza A H1N1 and H3N2 were analyzed retrospectively.According to the pathogen subtypes,they were divided into H1N1 group(34 cases)and H3N2 group(23 cases).Differences in clinical data,laboratory results,treatment,hospitalization time,outcome,and radiographic features between the two groups were analyzed.The t-test was used for the comparison of normally distributed measurement data between the groups,and Mann-Whitney U test was used for the comparison of non-normally distributed measurement data between the groups.Chi-square test or Fisher's exact probability method was used for the analysis of counting data,depending on the situation.Results There were differences in the season of onset,clinical and radiographic features between the two groups.H1N1 subtype mostly occurred in win-ter,and mainly manifested as respiratory symptoms(wheezing/shortness of breath)and respiratory complications(severe pneumonia).H3N2 subtype was mainly observed in summer,and more likely to involve the central nervous system(CNS),presenting with neuro-logical symptoms(convulsions),abnormal electroencephalogram,and concurrent influenza associated encephalopathy(IAE).Conclusion There are significant differences in epidemiology,clinical and radiographic features between severe influenza A H1N1 and H3N2.H3N2 has a higher probability of concurrent IAE and should be highly vigilant in clinical practice.

Objective:To assess the efficacy, safety, and related prognostic factors associated with the P-GemDOx regimen as a first-line treatment for patients with early-stage extranodal natural killer (NK) /T cell lymphoma (ENKTL) .Methods:A retrospective analysis was performed on sixty early-stage ENKTL patients treated with the P-GemDOx regimen who were admitted to the First Affiliated Hospital of Nanjing Medical University between August 2015 and May 2021. The Chi-square test or Fisher's exact test was used to compare group differences, and the Log-rank test was used to compare the differences in survival. Survival outcomes and prognostic factors were examined.Results:After completing 4 to 6 cycles of P-GemDOx chemotherapy, the overall response rate (ORR) was 88.3%, with forty-six patients (76.7% ) achieving complete response (CR). The 4-year progression-free survival (PFS) and overall survival (OS) rates were (66.3±7.1) % and (79.5±6.0) %, respectively. According to the PINK/PINK-E model, there was no significant difference in survival outcomes among risk groups. 23.3% of patients experienced progression of disease within 24 months (POD<24). OS estimates differed significantly ( P<0.001) between the POD<24 group ( n=14) and the POD≥24 group ( n=46). Analysis showed that SUVmax > 12.8 at diagnosis, non-single nasal cavity infiltration, and response less than CR after 4–6 cycles all had a significant association with POD24. We used these data as the basis for predicting POD<24 international prognostic index (POD24-IPI). Patients were stratified into low-risk (no risk factors), intermediate-risk (one risk factor), or high risk (two or three risk factors). These groups were associated with 4-year OS rate of 100%, (85.6±9.7) %, and (65.0±10.2) %, respectively ( P=0.014). The P-GemDOx regimen was well tolerated, with hematological toxicity being the main side effect. Conclusion:This study demonstrated that the P-GemDOx regimen is effective and safe in the first-line treatment of early-stage ENKTL, and POD24-IPI is a promising prognostic model.

Objective:To predict potential target genes in dexamethasone-induced open-angle glaucoma via bioinformatics technology.Methods:The GEO datasets GSE16643, GSE37474, and GSE124114 were used to analyze the differentially expressed genes by GEO2R.Gene Set Enrichment Analysis (GSEA) was performed on the differentially expressed genes between GSE37474 and GSE124114.Intersection of the three datasets were displayed by Venn diagram.The annotation and enrichment analysis of the intersection genes were performed through Gene Ontology (GO)/Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis and then were compared with normal tissue in GTEx Portal database.The corresponding protein interaction network was obtained by STRING.Finally, the candidate genes were searched for their transcription factors in UCSC and JASPAR.Primary human trabecular cells were divided into dexamethasone group and control group, treated with 2 ml 500 nmol/L dexamethasone and the same amount of ethanol, respectively.The expression of BDKRB1 and TAGLN in trabecular cells was detected by Western blot.Results:Differential genes between GSE37474 and GSE124114 datasets enriched in complement and coagulation cascade by GSEA.There were 89 intersecting genes of the three datasets.These genes mainly regulated the formation of extracellular matrix by GO analysis.The gene with the highest enrichment score and collagen-containing extracellular matrix was found to be associated with fibroblasts in GTEx Portal database.ACTA2, MYL9, TAGLN, and LMOD1 were closely related in STRING protein-protein interaction network.Transcription factor SP1 in UCSC and JASPAR according to related genes, BDKRB1, NID1, MFGE8 and TAGLN.The relative expression levels of BDKRB1 and TAGLN proteins were 1.32±0.14 and 0.44±0.09 in dexamethasone group, respectively, which were significantly higher than 1.00±0.00 and 0.20±0.10 in the control group, respectively ( t=-3.61, 2.89; both at P<0.05). Conclusions:Bioinformatics analysis showed that transcription factor SP1 may play a role in human trabecular meshwork cells to myofibroblasts transition after dexamethasone treatment.

Objective:To observe the inhibitory effect of lentivirus (LV)-mediated miR-191 on the proliferation and angiogenesis of human retinal vascular endothelial cells (hREC) cultured in vitro.Methods:The hREC cell lines were cultured in vitro and divided into control group, hypoxia group, LV-empty vector (LV-vector) group, and LV-miR-191 (LV-191) group. The LV-vector group and LV-191 group were transferred to the corresponding lentiviral vector respectively. Flow cytometry was used to detect cell transfection efficiency. Cell Counting Kit-8 (CCK-8) test was used to detect cell proliferation ability. Scarification test and invasion chamber (Transwell) test were used to detect cell migration ability. Matrigel test was used to detect cell lumen formation ability. Real-time quantitative polymerase chain reaction (qPCR) was used to detect the relative expression of miR-191 and relative mRNA expression of its downstream target genes p21, vascular endothelial growth factor (VEGF), cell division protein kinase (CDK) 6, cyclin-D1 (Cyclin D1). Independent sample t test was used for pairwise comparison. Results:The results of flow cytometry showed that the transfection efficiency of cells in the control group and the LV-191 group were 0.615% and 99.400%, respectively. The results of CCK-8, scarification, Transwell and Matrigel test showed that, compared with the control group, the number of cell proliferation ( t=6.130, 4.606), the cell mobility ( t=4.910, 6.702), the number of stained cells on the microporous membrane ( t=7.244, 6.724) and the lumen formation ability cells ( t=8.345, 9.859) were significantly increased in the hypoxia group and the LV-vector group ( P<0.01), while the LV-191 group showed completely opposite performance ( t=14.710, 6.245, 5.333, 5.892; P≤0.01). The qPCR test results showed that, compared with the control group and the LV-vector group, the relative expression of miR-191 mRNA in the cells of the LV-191 group was significantly up-regulated ( t=44.110, 42.680), the relative expression of Cyclin D1 mRNA ( t=29.940, 14.010) and CDK6 mRNA ( t=15.200, 7.645) decreased significantly, and the difference were statistically significant ( P<0.01); the relative expression of p21 mRNA increased, however, the difference was not statistically significant ( t=2.013, 2.755; P>0.05). There was no significant difference in the relative expression of VEGF mRNA in the 4 groups of cells ( F=0.966, P>0.05). Conclusions:LV-191 can inhibit the proliferation, migration and tubing of hREC by up-regulating p21 and down-regulating CDK6 and Cyclin D1.

Objective:To screening differentially expressed genes (DEGs) in proliferative diabetic retinopathy (DR) patients to provide new biological therapeutic targets for proliferative DR (PDR) therapy.Methods:A basic research. A total of 3 PDR patients (group PDR) and 3 non-diabetic patients (control group) were enrolled in the study in Tianjin Medical University Eye Hospital in October 2020. In addition, 40 cases of PDR and non-diabetic patients were selected and divided into PDR validation group and control validation group. Peripheral blood validation test was performed in PDR validation group and control validation group; RNA sequencing was performed in PDR group and control group. Transcriptomics (RNAseq) sequencing technology was used to screen DEG in PDR group and control group. The selected DEGs were analyzed by gene ontology (GO) function enrichment analysis, signal pathway enrichment analysis of Kyoto Encyclopedia of Genes and Genomes (KEGG) and protein-protein interaction network (PPI). The gene expression database was used to find the high-throughput data related to PDR, and multi queue comparison analysis was carried out. The target genes of differentially expressed miRNAs were predicted through targetscan platform, so as to clearly screen the correlation between DEG and PDR. Reverse transcription polymerase chain reaction and Western blot were used to verify the expression of DEG mRNA and protein related to PDR. The relative expression of PDR related DEG mRNA and protein between PDR validation group and control validation group were compared by paired t-test. Results:A total of 1 337 DEGs were screened by RNAseq sequencing in the peripheral blood of patients with PDR, of which 419 genes were up-regulated and 918 down-regulated. Among them, direct inhibitor of apoptosis protein-binding protein with low isoelectric point ( DIABLO), zinc finger and BTB domain containing 10 ( ZBTB10), polo-like kinases 3 ( PLK3), regulatory subunit 1 ( PIK3R1) and B cell translocation gene 3 (BTG3) were differentially expressed in PDR patients. The function of GO was enriched from the analysis of molecular function, biological process and cellular composition. The results showed that DIABLO, ZBTB10, PLK3, PIK3R1, BTG3 were involved in the pathological process related to PDR. KEGG enrichment analysis showed that glucose metabolic pathways such as extracellular matrix receptors, cytokine regulatory pathway, p53 signal pathway and galactose metabolism may be involved in the process of differential genes. The analysis of PPI protein interaction network showed that the larger the DEG-associated protein node, the greater the number of associated nodes. Among them, DIABLO, ZBTB10, PLK3, PIK3R1 and BTG3 played significant roles in the formation of the action network. By comparing and analyzing the existing high-throughput data related to diabetic retinopathy in Gene Expression Omnibus database and predicting by Targetscan platform, it was found that some significant differences in miRNA reported in aqueous humor, vitreous fluid and plasma of DR patients can be regulated by the differential genes found in this study. Compared with the control verification group, the relative expressions of DIABLO, ZBTB10, PLK3, PIK3R1 mRNA and protein in peripheral blood of the PDR verification group were up-regulated, and the relative expression of BTG3 mRNA and protein was down-regulated. Conclusion:DIABLO, ZBTB10, PLK3, PIK3R1 and BTG3 are DEGs in patients with PDR, and they can participate in the disease process by regulating the biological processes of cell proliferation, fibrosis and oxidative stress.

Objective:To evaluate the diagnostic value of serum prostate-specific antigen (PSA) levels and multi-parameter magnetic resonance imaging (mpMRI) in patients with granulomatous prostatitis after intravesical Bacillus Calmette-Guérin (BCG) therapy.Methods:The medical records of eight patients with pathologically proven granulomatous prostatitis in Shandong Provincial Hospital Affiliated to Shandong University from January, 2015 to June, 2020, were enrolled and analyzed in this retrospective study. All 8 patients (ages 47-76, mean 63.6) underwent pelvic mpMRI and serum tPSA levels before TURBT, which showed the results of tPSA, f/t and mpMRI were normal before TURBT (0.45-3.62 ng/ml, 0.20-0.51 and normal signal intensities on T1WI and T2WI, respectively). All patients underwent intravesical BCG therapy after post-TURBT 4-6-weeks’ intravesical gemcitabine therapy as a result of pathologically proven middle and high risk NMIBC via cystoscopy.Results:The results of tPSA levels in all 8 patients were elevated after intravesical BCG therapy after 9-15 months (mean 10.5 months), with 4 patients above 4 (6.77-12.89)ng/ml and 4 patients within the normal ranges(2.02-2.68)ng/ml, and f/t levels decreased to lower than 0.16 (0.09-0.15)in all patients. The mpMRI abnormal signals in all patients were all located in the peripheral zone of prostate. All nodular lesions of prostate mpMRI showed lower signal intensity (SI) on T2WI, higher SI on DWI and lower SI on ADC after BCG therapy. All patients underwent prostate biopsy for abnormal signal on prostate mpMRI. The biopsy pathologic results of all patients were granulomatous prostatitis.Conclusions:When elevated PSA and abnormal signals on prostate mpMRI after intravesical BCG therapy occurred, prostate biopsy may not be required for secondary granulomatous prostatitis patients with non-muscle invasive bladder cancer in combination of clinical history.

Diffuse large B-cell lymphoma (DLBCL) is the most common subtype of non-Hodgkin lymphoma (NHL). After the treatment of standard chemotherapy R-CHOP regimen, approximately 40% of DLBCL patients fail to respond to treatment or show progress of the disease. At the 61st American Society of Hematology Annual Meeting, multiple studies reported the latest treatment progress of DLBCL, including improving the prognosis of newly diagnosed patients and providing more treatment options for relapsed/refractory DLBCL patients.

Objective To compare the effects of ticagrelor and clopidogrel on platelet aggregation rate, myocardial perfusion and prognosis in patients with acute myocardial infarction. Methods One hundred and sixty-nine patients with acute ST segment elevation myocardial infarction (STEMI) and emergency percutaneous coronary intervention (PCI) were recruited and randomly divided into ticagrelor group (85 cases) and clopidogrel group (84 cases). The TIMI blood flow before and after PCI was recorded, and the ST segment fall rate of 1 h ECG after PCI was calculated. The platelet aggregation rate was measured. After 12 months' follow-up, the incidence of major adverse cardiac events (MACE) was recorded. The Logistic regression analysis was used to discover the factors of MACE. Results One hundred and sixty-nine patients with acute STEMI were recruited including 85 cases treated with ticagrelor and 84 cases in clopidogrel group. The ECG ST segment fall rate after PCI in ticagrelor group was significantly higher than that in clopidogrel group: (61.3 ± 30.7)％ vs. (47.8 ± 26.6)％, P<0.05. The platelet aggregation rate 2 h, 24 h and 7 d after PCI in ticagrelor group was significantly lower than that in clopidogrel group (P<0.05). MACE occurred in 19 cases (22.4％) in ticagrelor group and in 21 cases (25.0％) in clopidogrel group, and there was no significant difference (P > 0.05). Multiple Logistic regression analysis revealed that age and ECG ST segment fall rate were independent risk factors for MACE (P<0.05). Conclusions Compared with clopidogrel, ticagrelor can effectively reduce platelet aggregation rate and accelerate ST segment fall in STEMI patients, but their long-term prognosis is similar.

Objective To investigate the predictive value of serum adiponectin level on morbidity of acute myocardial infarction, and to evaluate its impact on prognosis in patients with acute myocardial infarction after percutaneous coronary intervention (PCI). Methods We prospectively recruited patients with acute ST segment elevation myocardial infarction (STEMI) who had underwent primary PCI. Their serum adiponectin levels were measured. The TIMI blood flow classification of culprit vessel was recorded after PCI. Echocardiography was performed in 24 h after PCI to evaluate left ventricular ejection fraction (LVEF). Major adverse cardiac events (MACE) were recorded including cardiac death, recurrent nonfatal myocardial infarction, target vessel reascularization, and readmission for heart failure after 18 months′ followed-up. Results 108 consecutive patients with STEMI and 38 control patients without coronary artery stenosis were recruited. The serum adiponectin level in STEMI group was significantly lower than that in control: (1 413.9 ± 218.8) ng/L vs.(1 756.3 ± 205.5) ng/L (P<0.01). STEMI patients with LVEF < 50% had lower serum adiponectin level compared with LVEF ≥50%: (1 334.1 ± 226.3) ng/L vs. (1 453.0 ± 213.8) ng/L , P<0.01. The serum adiponectin level in the TIMI 0-2 group after PCI was significantly lower than that in the TIMI 3 group:(1 350.7 ± 214.9) ng/L vs. (1 430.6 ± 218.5) ng/L, P < 0.01. Multiple logistic regression analysis revealed that lower serum adiponectin level was an independent predictor of STEMI ( OR=0.992, 95% CI 0.987-0.996, P<0.01). MACE occurred in 22 patients (20.4% ). Cox regression analysis revealed that lower serum adiponectin level remained an independent predictor of MACE ( OR=0.996, 95% CI 0.993-0.999, P < 0.01). Conclusions Lower serum adiponectin level is significantly associated with morbidity of STEMI and adverse prognosis in patients with acute myocardial infarction.