AIM: To evaluate the effectiveness and safety of compound anisodine combined with laser photocoagulation in the treatment of diabetic retinopathy(DR).METHODS: A prospective cohort study was used to select 80 patients(160 eyes)diagnosed with severe non-proliferative diabetic retinopathy(NPDR)and proliferative diabetic retinopathy(PDR)in Beijing Tongren Hospital, Capital MedTcal University and Beijing Daxing District People's Hospital from May 2023 to July 2023. They were divided into control group(40 cases, 80 eyes)and observation group(40 cases, 80 eyes)by random number table method. The control group only received 532 nm laser panretinal photocoagulation(PRP)treatment, while the observation group received PRP treatment together with superficial temporal subcutaneous injection of compound anisodine. The clinical efficacy, changes in hemorheology, changes in retinal blood vessels, and incidence of adverse reactions in the two groups were observed before and at 2 mo after treatment.RESULTS: The visual acuity, fundus changes and hemorheological parameters of the two groups were analyzed before and after treatment. There were no significant differences in the two groups before treatment(all P>0.05). The best corrected visual acuity of the observation group was better than that of the control group at 2 mo after treatment(P<0.05), and the clinical curative effect of fundus was also better than that of the control group(all P<0.05). The hemorheological indexes of central retinal artery blood flow(peak systolic velocity and end diastolic velocity)in the observation group were higher than those of the control group(all P<0.05), and the blood flow resistance index was lower than that of the control group(P<0.05).CONCLUSION: Compound anisodine combined with 532 nm laser photocoagulation is safe and effective in the treatment of DR, and the visual recovery effect is better.

Objective To explore the correlation between the incidence of foodborne diseases and meteorological factors in Jinan, and to provide targeted measures for the prevention and control of foodborne diseases. Methods Data from the reporting systems of two sentinel hospitals for active surveillance of foodborne diseases from 2013 to 2021 in Jinan were collected. The meteorological data in the same period in Jinan were also collected. The generalized additive model was used to explore the nonlinear relationship between meteorological factors and the incidence of foodborne diseases, and threshold function analysis was use to perform subsection regression. Results The incidence of foodborne diseases was positively correlated with daily average temperature (r_s=0.23), relative humidity (r_s=0.05), and daily average wind speed (r_s=0.01), and negatively correlated with daily average air pressure (r_s=-0.19). Based on the GAM results and segmented regression analysis of meteorological factors, it was found that when the daily average temperature was below or above the threshold of 24.63°C, for every 1°C increase in daily average temperature, the incidence of foodborne diseases correspondingly increased by 0.04% and 0.18%. When the daily average wind speed was above the threshold of 2.26 m/s, the incidence of foodborne diseases decreased by 0.36% for every 1 m/s increase in the daily average wind speed. Conclusion Nine years of observation and data analysis have shown that meteorological factors such as daily average temperature, relative humidity, air pressure, and wind speed are related to the incidence of foodborne diseases. These findings suggest that meteorological factors may be important factors leading to foodborne diseases, which provides an important scientific basis for formulating effective prevention and control measures.

Objectives To explore the trend characteristics of foodborne diseases in Jinan City and apply the seasonal autoregressive integrated moving average model (SARIMA) for prediction. Methods The incidence data of foodborne diseases from two active monitoring sentinel hospitals in Jinan City from 2014 to 2020 were collected to establish a time series. The SARIMA model was used to fit the incidence situation. The numbers of cases in 2021 were compared with the predicted values to validate the model and evaluate the predictive effect. Results The SARIMA (2, 0, 1) (0, 1, 1)₁₂ model was established and fitted the time series of food borne diseases in Jinan well, with AIC=687.22. Using Ljung Box function, P=0.499 was obtained, indicating that the residual error belonged to the white noise series. The data in 2021 was used to test the model extrapolation effect, and the actual values fell within the 95% confidence interval of the predicted value. The model prediction effect was relatively ideal. Conclusion SARIMA (2, 0, 1) (0, 1, 1)₁₂ model can better fit the temporal change of foodborne diseases, and therefore can be used to fit and predict the monthly incidence of foodborne diseases.

ObjectiveTo investigate the mechanism of neferine（Nef） in promoting vascular regeneration against cerebral ischemia through modulation of mitochondrial calcium uniporter（MCU） ion channel. MethodTaking the area of subintestinal vessels in microvascular deficiency zebrafish as an index， the vascular regenerative efficacy of Nef was evaluated， and the median effective concentration（EC₅₀） was calculated. Rats were randomly divided into a sham operation group， a model group， a positive drug group（butylphthalide， 6 mg·kg^-1）， and Nef low， medium， and high dose groups（0.125， 0.625， 3.125 μg·kg^-1）. Except for the sham operation group， the middle cerebral artery occlusion（MCAO） model was established in other groups. After modeling， the groups were administered the corresponding dose of drugs by gavage， while the sham operation and model groups received equal volumes of saline， once a day for 7 consecutive days. Neurobehavioral scores were assessed for each group of rats， and the infarct rate of ischemic brain tissue was calculated by 2，3，5-triphenyltetrazolium chloride（TTC） staining. The regional cerebral blood flow（rCBF） of each group was measured using a speckle contrast imaging. Immunofluorescence and Western blot were conducted to detect the expression of vascular endothelial growth factor（VEGF）， platelet endothelial cell adhesion molecule-1（CD31）， and hypoxia-inducible factor-1α（HIF-1α） proteins in each group. Human umbilical vein endothelial cells（HUVECs） were divided into the normal group， model group， positive drug group（astragaloside Ⅳ， 10 μmol·L^-1）， and Nef group （32 nmol·L^-1）. In the verification of mitochondrial protection of Nef and its mechanism in promoting vascular regeneration， the spermine（MCU agonist） and Nef+spermine group were added. HUVECs model of oxygen-glucose deprivation（OGD） was established in all groups except the normal group， the cell viability was assessed using 3-（4，5-dimethylthiazol-2-yl）-2，5-diphenyltetrazolium bromide（MTT） assay， and cell migration ability was evaluated through scratch and tube formation assays. Fluorescent probes（Rhod-2 AM， Fluo-3 AM， JC-1， Calcein AM） and a cellular energy metabolism analyzer were used to analyze the mitochondrial protective effects of Nef. Molecular docking was performed to predict the binding ability of Nef with MCU and HIF-1α， and Western blot was used to detect the effects of Nef on the protein expressions of MCU， B-cell lymphoma-2 associated X protein（Bax）， Caspase-3 and HIF-1α in the OGD model HUVECs. ResultThe results of vascular regeneration in microvascular deficiency zebrafish showed that compared to the normal group， the area of subintestinal vessels in the model group significantly decreased（P<0.01）. Compared to the model group， different concentrations of Nef could significantly increase the area of subintestinal vessels（P<0.01）， with the maximum tolerated concentration of 10.24 μmol·L^-1 and the EC₅₀ of 0.23 μmol·L^-1. Anti-cerebral ischemia results on MCAO rats showed that compared to the sham operation group， the model group had a significant decrease in rCBF and a significant increase in infarct rate， while CD31 expression significantly decreased（P<0.01）， and VEGF and HIF-1α protein expressions significantly increased（P<0.05）. Compared to the model group， the treated groups showed significant increases in rCBF， significant reductions in infarct volume， and significant increases in CD31， VEGF， and HIF-1α protein expression（P<0.01）. Cell experiment results showed that compared to the normal group， the model group had decreased cell viability and migration ability， increased intracellular Ca²⁺ and mitochondrial Ca²⁺ levels， reduced mitochondrial permeability transition pore（MPTP） opening， and decreased mitochondrial energy metabolism capability， with increased expressions of MCU， Bax， Caspase-3 and HIF-1α proteins（P<0.05， P<0.01）. Compared to the model group， the Nef group showed increased cell viability and migration ability， decreased intracellular Ca²⁺ and mitochondrial Ca²⁺ levels， increased MPTP opening， enhanced mitochondrial energy metabolism capability， decreased expressions of MCU， Bax and Caspase-3 proteins， and increased HIF-1α protein expression（P<0.05， P<0.01）. ConclusionNef can stabilize mitochondrial membrane potential and inhibit mitochondrial apoptosis. By down-regulating the expression of MCU， it suppresses the activation of intracellular Bax and Caspase-3 while activating the HIF-1α signaling pathway， enhancing the expression of VEGF and CD31， thereby promoting vascular regeneration to treat ischemic brain injury.

BACKGROUND:The increase in multi-drug resistant bacterial infections has become a major problem in modern healthcare due to the development of bacterial resistance to antibiotics and the development of new antibacterial alternative drug materials is of great importance. OBJECTIVE:To synthesize and perform a series of characterization of a CeO2 nanoenzyme to investigate its biocompatibility and antibacterial properties against Escherichia coli. METHODS:CeO2 nanoenzymes were synthesized using a hydrothermal method.The morphology,product composition,and chemical composition were analyzed using characterization methods such as X-ray diffraction,X-ray photoelectron spectroscopy,Fourier infrared analysis,Raman spectroscopy,scanning electron microscopy,and transmission electron microscopy.The peroxide-mimetic enzyme activity of CeO2 nanoenzymes was characterized using TMB color development assay.The toxic effect of CeO2 nanoenzymes at different concentrations(10,25,and 50 μg/mL)on mouse fibroblast L929 cells was evaluated using the CCK-8 assay.The antibacterial properties of CeO2 nanoenzymes against Escherichia coli under different conditions were evaluated using the plate coating method.Changes in intra-bacterial reactive oxygen species after treatment with different conditions were detected using a reactive oxygen species detection kit. RESULTS AND CONCLUSION:(1)The morphology of the synthesized CeO2 nanoparticles was rod-shaped,with Ce3+ accounting for 29.87%of the total Ce3+/Ce4+ and an average grain size of 7.4 nm.In a slightly acidic environment containing TMB and pH=5.5,CeO2 nanoenzymes mixed with H2O2 showed excellent peroxidase activity,but did not show peroxidase simulated activity at pH=7.4.(2)There was no statistically significant difference in the toxic effects of CeO2 nanoparticles at various mass concentrations on mouse fibroblast L929 cells.(3)In a slightly acidic environment at pH 5.5,Escherichia coli was inhibited to a certain extent in the presence of CeO2 nanoenzyme alone at a concentration of 10 μg/mL,with a decrease in CFU results of about 0.5 log(P＜0.01);in a slightly acidic environment containing 50 μmol/L H2O2,CeO2 nanoenzyme showed excellent antibacterial effects against Escherichia coli,with a decrease in Escherichia coli CFU results of by about 1.5 log(P＜0.001).After CeO2 nanoenzymes interacted with Escherichia coli,the level of reactive oxygen species in Escherichia coli increased(P＜0.05);after CeO2 nanoenzymes interacted with Escherichia coli together with H2O2,the level of reactive oxygen species in Escherichia coli increased significantly(P＜0.001).(4)The results show that the CeO2 nanoenzymes have good biocompatibility,are inherently antibacterial,and can exhibit peroxidase activity in a slightly acidic environment containing low concentrations of H2O2,and generate reactive oxygen species to kill bacteria,thus showing excellent antibacterial effects.

BACKGROUND:Kinesio taping has been widely used as a means of sports protection,but its role as a means to correct abnormal biomechanical changes of the lower limbs during side-step cutting remains unclear. OBJECTIVE:To analyze and compare the changes in lower limb kinematics and dynamics when the subjects complete the side-step cutting of the knee joint under the conditions of kinesio taping,placebo taping and blank control. METHODS:Thirty-nine male college students majoring in basketball were recruited as subjects.Each subject was tested with kinesio taping,placebo taping or no taping.The mechanical correction method was used to patch the dominant knee joint of each subject.The run-up speed of 4.5-5.5 m/s was selected to complete the 45° side-step cutting motion,and the kinematics and kinetics data were collected synchronously by the three-dimensional dynamic capture system and the force measuring platform.The kinematics and kinetics parameters at the moment of initial touchdown and peak ground reaction force were selected for data analysis.SPSS 27.0 software was used for statistical analysis of the test data. RESULTS AND CONCLUSION:Kinematic indexes:compared with no taping and placebo taping,the hip abduction and knee valgus angles at the initial touchdown moment were significantly decreased when kinesio taping was used(P<0.05);at the moment of peak lateral ground reaction force,the angles of hip abduction,knee valgus and ankle plantar flexion decreased significantly(P<0.05),and the knee flexion angle was significantly increased(P<0.05).Kinetic indexes:Compared with no taping,both kinesio taping and placebo taping significantly reduced hip abduction and external rotation torque,knee valgus and external rotation torque at the moment of initial touchdown(P<0.05),and significantly reduced peak vertical ground reaction force and peak horizontal backward ground reaction force(P<0.05);in addition,kinesio taping significantly reduced peak lateral ground reaction force compared with no taping and placebo taping(P<0.05).These results indicate that kinesio taping of the knee joint may improve some kinematic and kinetic indexes associated with lower limb injury risk factors during the completion of the side-step cutting in basketball specialized college students to some extent,and may have a positive effect on the prevention of injury during the side-step cutting.In addition,the trends in the effects of placebo taping and kinesio taping on the knee joint are more consistent in terms of changes in some indexes,suggesting that there may be a placebo effect on the mechanism of action of kinesio taping.

【Objective】 To investigate the expression of optineurin (OPTN) in multiple myeloma (MM) and explore the mechanism and clinical value of OPTN gene in the occurrence and development of MM. 【Methods】 In this study, three gene expression omnibus (GEO) data sets were used to analyze the expression level of OPTN in MM. Clinical bone marrow samples of MM patients were collected. qRT-PCR was used to further verify the expression of OPTN in MM patients. The Kaplan-Meier survival curve and receiver operating characteristic (ROC) curve were used to analyze the value of OPTN in the prognosis and diagnosis of MM. At the same time, MM transcriptome data were downloaded from the Cancer Genome Atlas (TCGA) database. According to the median boundary of OPTN mRNA expression level, the MM patients were divided into OPTN high- and low-expression groups. In order to investigate the possible molecular mechanisms of OPTN in MM, gene set enrichment analysis (GSEA) was made after the differentially expressed genes were filtered using the limma package of the R language. 【Results】 The expression level of OPTN was significantly lower in MM tissues than in normal tissues (P<0.05). OPTN expression level was significantly correlated with International Staging System (ISS) in MM patients (P<0.05). ROC results showed that the expression level of OPTN could distinguish between normal and MM patients. Survival analysis showed that the overall survival (OS) of patients with low OPTN expression was significantly lower than that of patients with high OPTN expression (P<0.05). GO, KEGG and GSEA enrichment analyses indicated that OPTN might affect apoptosis and autophagy, and regulate cellular immune response by regulating Nod-like receptors, NF-κB, TNF and RAS/MAPK pathways. 【Conclusion】 Low expression of OPTN in MM is associated with poor prognosis of patients, and thus may be an important potential biomarker for the diagnosis and treatment of MM.

Objective:The purpose of this study was to examine the clinical features and initial treatment outcomes of elderly individuals with idiopathic membranous nephropathy.Methods:This study retrospectively analyzed the clinical characteristics and therapeutic effect of hospitalized patients aged 60 years or older with renal-biopsy-proven idiopathic membranous nephropathy for at least one year.Results:This study enrolled a total of 91 elderly patients with IMN, consisting of 51 males(56.0%)and 40 females(44.0%). The median age of the patients was 67 years.The urinary protein creatinine ratio(uPCR)and urinary albumin creatinine ratio(uACR)of the patients were 4 454.3 mg/g and 2 258.5 mg/g, respectively.The median 24-hour urinary protein and urinary albumin levels were 5 098.2 mg/24 h and 2 800.6 mg/24 h, respectively.The average estimated glomerular filtration rate(eGFR)was(60.5±20.4)ml·min -1·1.73 m -2.Out of the total of 61 patients, 67.0% achieved remission, including complete and partial remission, within a year of renal biopsy.The levels of uPCR and uACR were significantly higher in the non-remission group compared to the remission group(5 462.5 vs.2 271.1 mg/g, P<0.001; 2 774.4 vs.1 320.0 mg/g, P=0.001). Additionally, the levels of 24h urinary protein and urinary albumin were significantly higher in the non-remission group compared to the remission group(6 526.4 vs.3 210.4 mg/g, P=0.002; 3 067.7 vs.2 102.4 mg/g, P=0.007). The remission group had a higher proportion of patients receiving immunosuppressive therapy(85.2% vs.33.3%, P<0.001). The remission rates were higher in patients treated with glucocorticoid combined with cyclophosphamide, glucocorticoid combined with calcineurin inhibitors, or glucocorticoid combined with mycophenolate mofetil compared to those receiving conservative treatment(88.2% vs.31.0%, P=0.001; 80.0% vs.31.0%, P<0.001; 100.0% vs.31.0%, P=0.007). There was no significant difference in remission rate between the three immunosuppressive therapy groups( P>0.05). However, upon further analysis, it was found that the levels of uPCR, uACR, and serum cystatin C(CysC)were higher in the immunosuppressive therapy groups compared to conservative treatment.Additionally, serum total protein and albumin were lower in the immunosuppressive therapy groups, and these differences were statistically significant( P<0.05). Conclusions:The majority of elderly patients diagnosed with IMN have multiple comorbidities.For those at high risk with elevated urinary protein levels, early initiation of immunosuppressive therapy may lead to a higher initial urinary protein remission rate.Therefore, it is advisable to develop individualized treatment plans for elderly patients with IMN based on their clinical characteristics, as well as the risks and benefits associated with immunosuppressive therapy.

In order to deeply learn the circuit principle and typical fault analysis methods of medical electric bed,motivate and improve the independent maintenance ability of medical engineers,the functions and structures of commonly used medical multi-function electric beds were introduced.Based on the control circuit boards of 3 brands of medical multifunctional electric bed used in Nanjing BenQ Hospital,the electrical schematic diagram was drawn,the working principle was analyzed,the common faults were analyzed,and the causes and solutions of the faults were found,so as to ensure the normal operation of various brands of electric beds in the hospital,effectively control the maintenance cost,and improve the maintenance efficiency and service level.

The 7th edition of "Resources for Optimal Care of the Injured Patient (2022 Standards)" was released in December 2023. The main contents including establishment of trauma centers, clinical practice guidelines for the care of the trauma patients, resource allocation for trauma care, trauma care quality management, trauma data registry system, trauma care education and training, etc were introduced and analyzed to explore its implication for the construction of China′s trauma care system.Accordingly, the following measures were proposed to improve the construction of China′s trauma care system: establishing graded standards for a trauma care system covering the entire population in China, developing diagnosis and treatment regimens that cater to special groups, optimizing the allocation of trauma care resources, formulating plans to improve trauma care quality and patient safety that conform with China′s national conditions, setting unified standards for trauma data, and enhancing education and training in trauma care. This paper provides decision-making references for promoting the overall construction of China′s trauma care system and improving trauma care quality.