Objective To study the early protective effect of NADPH on human umbilical vein endothelial cells (HUVECs) and the expression of occludin and MMP9 induced by oxygen glucose deprivation and reoxygenation (OGD/R). Methods HUVECs were cultured and divided into blank control group, OGD/R group and OGD/R+NADPH 20 μmol/L group. The proliferation of HUVECs after treatment was detected by CCK-8 assay. The cytotoxicity was detected by LDH release assay. The morphological changes of HUVECs were observed by inverted microscope. Superoxide dismutase (SOD MDA) activity and malondialdehyde (MDA) were detected by commercially available kit. The expressions of occludin and MMP9 were detected by Western blot assay. Results Compared with the OGD/R, NADPH enhanced the cell viability significantly (P<0.05), reduced the release of LDH (P<0.05), promoted the maintance of HUVECs morphology, reduced MDA generation (P<0.05) and increased SOD activity (P<0.05). Following OGD/R,the treatment of NADPH can inhibit MMP9 level (P<0.05) and promote the recovery of occludin level (P<0.05). Conclusion NADPH can protect HUVECs from the damage induced by OGD/R by reducing oxidative stress and regulating the expressions of MMP9 and occludin.

Based on the three delivery forms of CRISPR/Cas9 system at the levels of DNA, RNA and protein, this paper mainly approaches the development and new strategies of CRISPR/Cas9 delivery systems, as well as their application in the biomedical field and the clinical treatment of gene-related diseases. By summarizing and elaborating the CRISPR/Cas9 system delivery and gene therapy strategy, new ideas are provided for the discovery of innovative drugs and the development of gene therapy.

Objective To investigate the influence of high-fat diet on liver function and intestinal bacte-rial community through building rat models. Methods 20 rats of 21 days old were divided into two groups ran-domly as normal diet group fed with standard chow diet and high-fat group fed with high-fat diet. After 6 weeks, feces of rats in both groups were obtained for 16S rRNA high-through sequencing of the intestinal bacterial com-munity. Results After 6 weeks high-fat diet, total protein (TP) (55. 79±3. 75, P=0. 002), globin (GLB) ( 34. 9±2. 53, P<0. 001), albumin (ALB) /GLB (. 60±0. 02, P<0. 001), alkaline phosphatase (ALP) (373. 80±63. 05, P<0. 001), total cholesterol (TC) (1. 94±0. 23, P<0. 001), low density lipoprotein (LDL) (0. 76±0. 93, P<0. 001), LDL/high density lipoprotein (HDL) (1. 43±0. 22, P<0. 001), and tri-glyceride (TG) (1. 48±0. 50, P=0. 015) increased compared with the normal diet group. Additionally, intes-tinal bacterial diversity and evenness decreased significantly. The dominant bacteria were Bacteroidetes, Firmi-cutes, and Proteobacteria, with averaged relative abundances as 56. 36%, 35. 31%, and 6. 61%, respectively. The relative abundances of Bacteroidetes deceased (P=0. 007), those of Firmicutes increased (P=0. 020), and those of Proteobacteria were kept stable (P=0. 928) after a 6-week high-fat diet. Furthermore, the intesti-nal bacterial community structure changed distinctly between the two groups by 16s rRNA high-through sequen-cing. Conclusion High-fat diet can lead to change of intestinal bacterial community structure and further result in liver function damnification as well as obesity.

DNA nanocages are nanoscale three-dimensional polyhedral structures formed by self-assembled oligonucleotide strands by base pairing.DNA nanocages,especially the tetrahedron DNA nanocages,were proved to be potential nanocarriers for drug delivery,due to their good stablility,high compatibility,intracellular ablility and hollow cavity for modification and drug loading..In this paper,we reviewed the structural characteristics,synthetic methods and targeted modification of DNA nanocages,as well as their development and application in drug carriers,biological imaging,in vitro diagnosis and materials science.

Objective:Based on the Delphi method, the electronic intelligent kanban system for general ward nursing was constructed, and its clinical application was studied.Methods:This study was the quasi experimental research, 39 nursing staff working in the experimental ward of electronic intelligent kanban in general surgery of Zhongshan Hospital Fudan University in November 2021 and November 2022 were selected, Delphi expert consultation was used to develop the menus and detailed contents of general ward nursing electronic intelligent kanban system, and it was used in clinical practice. We used the Chinese version of the Nursing Assessment of Shift Report to evaluate the effect of nursing staff before and after the application.Results:The authority coefficients of the two rounds of expert consultation were 0.868 and 0.886 respectively, and the Kendall coordination coefficients of expert consultation were 0.068 and 0.076 respectively (all P<0.01). Finally, the electronic intelligent kanban consisted of 4 first-level menus, 8 second-level menus and 13 third-level menus. After the application of electronic intelligent kanban, the score of Nursing Assessment of Shift Report increased from (79.62 ± 7.64) to (83.51 ± 2.47), with a statistically significant difference ( t=-3.03, P<0.05). Conclusions:The constructed nursing electronic intelligent kanban system was scientific and reliable, which will be beneficial to improve the the effect of nurse shift handover.

Objective:To investigate the clinical features and etiology of 176 children with liver dysfunction, and to provide reference for the diagnosis and treatment of children with liver dysfunction.Methods:From April 2017 to February 2019, 176 children with liver function abnormalities from 2 months to 13 years old who were admitted to Hangzhou Children's Hospital were selected inthe study.The pathogens of the children's secretions were detected by fluorescence quantitative method.The blood was tested for hepatitis B virus, hepatitis C antibody and hepatitis A antibody, and blood culture method was used to detect and identify bacteria, and blood genetic metabolism and coagulation function were also screened.According to the age of the children, they were divided into infant group, toddlergroup, preschool group and school age group.Results:Among the 176 children, the infants had the most abnormal liver function, 93 cases(52.84%), followed by 43 children (24.43%) in the toddler group.Causes of the disease: 138 cases (78.41%) of the original diseases, 8 cases (4.55%) of non-infectious diseases, 30 cases (17.04%) of the undetected pathogens.Among the 138 cases with liver function abnormality due to infectious diseases, 123 cases (89.13%) were infected with virus, 8 cases (5.80%) were infected with bacteria, 6 cases (4.35%) were infected with mycoplasma, and 1 case (0.72%) was infected with Toxoplasma gondii.Among the 123 cases of liver dysfunction caused by viral infection, cytomegalovirus was detected in 62 cases (50.41%), followed by EB virus in 38 cases (30.89%), rotavirus in 10 cases (8.13%), and EV71 virus in 5 cases (4.07%), 4 cases of common enterovirus (3.25%), 2 cases of respiratory syncytial virus (1.63%), 1 case of herpes simplex virus and Coxsackie A16 virus (0.81%). Pre-school and above were mainly infected with EB virus; the age>1 year-old liver function abnormality was 37.10% (23/62) due to cytomegalovirus, and the proportion of EB virus infection was 92.11% (35/38). Compared with 62.90% and 7.89% of age 2 months to 1 year, the difference was statistically significant (χ 2=29.27, P=0.00). Eightcases of liver infection caused by bacterial infection: 3 cases of Staphylococcus aureus, 2 cases of Streptococcus pneumoniae, 2 cases of Escherichia coli, and 1 case of Pseudomonas aeruginosa.There were 3 cases of genetic metabolic diseases, including 2 cases of hepatolenticular degeneration and 1 case of glycogen accumulation.Characteristics of liver function abnormalities in children: the main clinical manifestations of children were jaundice, splenomegaly and hepatomegaly, cough, diarrhea, etc.Outcome: 98 cases (55.68%) were healed, 60 cases (34.09%) were improved, and 17 cases (9.66%) were aggravated, 1 case of death (0.57%). Conclusion:The abnormal liver function of infants was mainly caused by virus infection, especially cytomegalovirus.Infants and young children have no obvious symptoms in the early stage of the disease, severe cases can be manifested as jaundice and hepatosplenomegaly, mainly mild, with a good prognosis.

Objective:This study aimed to clarify the clinical characteristics of children infected with rhinovirus in the context of the Corona Virus Disease 2019 (COVID-19) pandemic and to explore the impact of recent COVID-19 infection history on their clinical features.Methods:Clinical data and laboratory test result of 286 children diagnosed with rhinovirus infection at Hangzhou Children′s Hospital from July 2022 to October 2023 were collected. A retrospective survey was conducted to determine whether all study participants had a history of COVID-19 infection within the 6 months prior to hospitalization.Results:Among the 286 children with rhinovirus infection, 180 (62.94%) had simple rhinovirus infection, while 106 (37.06%) had co-infections with other pathogens; Among the 180 rhinovirus simplex-positive children, 56.67% had wheezing symptoms; among them, 15 cases (15/180, 8.33%) were diagnosed with acute asthma attacks; 7 cases (7/180, 3.88%) were diagnosed with severe pneumonia. Based on whether the children had a history of COVID-19 infection in the 6 months prior to hospitalization, they were divided into a group with previous COVID-19 infection and a group without previous COVID-19 infection. There were no significant differences between the two groups in terms of gender, age of onset, peak fever, incidence of wheezing, incidence of pneumonia, proportion of severe pneumonia, proportion of severe asthma attacks, duration of fever, time to relief of wheezing, length of stay, white blood cell count, eosinophil count, C-reactive protein, procalcitonin, immunoglobulin E, oxygen therapy requirements, and use of intravenous steroids ( P>0.05). Conclusions:A history of COVID-19 infection in the past 6 months does not exacerbate the clinical symptoms of children with rhinovirus infection, nor does it increase the incidence of wheezing.

Objective: To investigate the effect of oral nutritional supplements(ONS) on body weight loss and life quality in post-discharge patients with gastric and colorectal cancer. Methods: All the enrolled post-operative gastric or colorectal cancer patients were randomly divided into ONS group and control group. Body weight loss, middle arm circumference, triceps skinfold thickness and right-hand grip strength were measured and the Karnofsky score, ECOG score and QOL score were calculated 3 months after the discharge. Results: The body weight loss of gastric cancer patients was lower in ONS group than in control group since 2 months after discharge.(2 months after discharge: 1.65±2.11vs. 2.70±1.90 kg, t=-2.385 3, P=0.019 3; 3 months after discharge: 1.95±2.75vs. 3.67±2.29 kg, t=-3.134 7, P=0.002 4), There was no difference of body weight loss between two groups in colorectal cancer patients. The middle arm circumference, triceps skinfold thicknessand right-hand grip strength showed no statistic difference between two groups both in gastric and colorectal cancer patients. The Karnofsky score(56.82±13.65%vs. 51.71±9.72%, t=2.014 8, P=0.047 2) and QOL score(41.91±6.92 vs. 38.39±8.77, t=2.059 7, P=0.042 6) were higher in ONS group than in control group in gastric cancer patients. While all 3 types of scores had no difference between two groups in colorectal cancer patients. Conclusion ONS can efficiently reduce the body weight loss and improve the performance status and life qualityin post-discharge gastric cancer patients, but not in colorectal cancer patients.

The functionality of DNA biomacromolecules has been widely excavated, as therapeutic drugs, carriers, and functionalized modification derivatives. In this study, we developed a series of DNA tetrahedron nanocages (Td),

Objective:To study the respiratory morbidity and the risk factors of respiratory complications in late-preterm infants.Methods:The data of 959 late-preterm infants in 21 hospitals in Beijing from October 2015 to April 2016 were collected.These infants were divided into the respiratory morbidity group (237 cases) and the control group (722 cases) according to whether they had short-term respiratory morbidity after birth.Clinical data of the two groups were compared.Results:Among the 959 late-preterm babies, 530 were male and 429 were female.Two hundred and thirty-seven cases (24.7%) developed short-term respiratory morbidity after birth.Infectious pneumonia developed in the most cases (81 cases, 8.4%), followed by transient tachypnea (65 cases, 6.8%), amniotic fluid aspiration (51 cases, 5.3%), and respiratory distress syndrome (24 cases, 2.5%) successively.All the infants recovered and discharged.There were no differences between gender and maternal age between 2 groups (all P>0.05). Compared with the control group, more late-preterm infants were delivered by cesarean section (73.4% vs.59.7%, χ2=14.43, P<0.001) and the 1-minute Apgar score was lower [(9.41±1.66) scores vs.(9.83±0.53) scores, t=5.40, P<0.001] in the respiratory morbidity group.The differences were statistically significant.There were more cases with maternal complications in the respiratory morbidity group that in the control group (66.7% vs.58.6%, χ2=4.877, P=0.027), but no difference in various complications between 2 groups was observed ( P>0.05). In the respiratory morbidity group, the most frequent complications were maternal hypertension and preeclampsia (27.8% vs.22.6%, χ2=2.728, P=0.099). There were no differences between 2 groups in gestational age, birth weight and birth length (all P>0.05). There were more infants small for gestational age and large for gestational age in the respiratory morbidity group than in the control group (18.8% vs.14.1%, 6.3% vs.2.4%, χ2=8.960, P=0.011). The duration of hospitalization of the respiratory morbidity group was significantly longer than that of the control group [(9.00±4.42) d vs.(6.82±4.19) d, t=6.676, P<0.001] since the infants with respiratory morbidity needed to be hospita-lized. Conclusions:Respiratory diseases occur in about 1/4 of late-preterm infants.Infants who are delivered by cesarean section and whose mothers are complicated with the maternal hypertension and preeclampsia should be monitored closely.Respiratory support should be provided for infants not appropriate for gestational age who are more likely to suffer from respiratory diseases, so that they can successfully pass through the transition period.