ObjectiveTo analyze the characteristics of 150 patients with spinal cord injury complicated with spasticity. MethodsA cross-sectional survey was conducted on 150 patients with spinal cord injury accompanied by spasticity from September, 2019 to December, 2024. Their age, gender, cause of injury, injury site, severity of injury, spasticity severity and other indicators were recorded. The relationships between different characteristics were analyzed, and a correlation analysis of disease duration, spasticity grade, injury level, injury severity and age were conducted. ResultsThere was no significant difference in age distribution between patients with tetraplegia and paraplegia (Z = 0.806, P = 0.420). The proportions of trauma (χ² = 3.982, P = 0.046) and tetraplegia (χ² = 10.559, P = 0.010) were higher in males than in females. Trauma was the main cause of injury in both tetraplegia and paraplegia patients; the proportion of tetraplegia was higher than paraplegia in trauma patients, while paraplegia was higher than tetraplegia in non-trauma patients (χ² = 11.885, P < 0.001). Patients with tetraplegia was dominated by incomplete injury, whereas patients with paraplegia was dominated by complete injury (χ² = 10.885, P = 0.012). Grade A injury was predominant in trauma patients (P = 0.003). Spasticity grade showed a very weak positive correlation with disease duration (r = 0.175, P = 0.032) and age (r = 0.168, P = 0.040). Injury severity showed a very weak positive correlation with age (r = 0.183, P = 0.025). ConclusionCharacteristics of patients with spinal cord injury complicated with spasticity is different with gender, cause of injury, injury level, injury severity.

As a commonly used material for removable partial dentures,cobalt-chromium alloy frameworks offer excellent corrosion resistance,processability and stability.However,they also have drawbacks,including a high modulus of elasticity and poor aesthetics.Titanium,known for its lighter weight and superior corrosion resistance,also has disadvantages such as insufficient ductility and higher cost.Thus,exploring materials with improved performance for removable partial dentures has been a hot topic in the field of oral resto-ration.In recent years,poly-ether-ether-ketone(PEEK)has attracted attention for its outstanding mechanical properties,wear resist-ance,and biocompatibility,and has been gradually applied in the oral medicine fields of bone defect repair,implantation,restoration,and orthodontics.This paper provides an overview of the application and research progress of PEEK in the repair of removable partial dentures,and offers a perspective on its future application prospects and development directions in this area.

ObjectiveTo investigate the prevalence and associated factors of malocclusion among preschool children in Fengxian District, Shanghai, and to provide a scientific basis for local medical and public health departments to formulate targeted interventions. MethodsA cross-sectional study was conducted from September to December 2024. A total of 1 172 children aged 3‒5 years were recruited from 10 kindergartens across 5 townships in Fengxian District, using stratified cluster random sampling method. Clinical examinations were conducted to record occlusal parameters such as the relationship of the second deciduous molars, canine teeth relationship, anterior overbite and overjet, anterior and posterior crossbite, and crowded dentition. A questionnaire survey was performed to the parents to collect information on factors influencing malocclusion, including genetic predisposition, poor oral habits, dietary patterns, and sleep-related breathing conditions. Data were statistically analyzed using IBM SPSS Statistics 27 software, with chi-square test for categorical data and binary logistic regression analysis for influencing factors. ResultsThe overall prevalence of malocclusion among 3‒5-year-old children in Fengxian District of Shanghai was 70.73%, with no statistically significant differences between genders (P>0.05). Deep overbite accounted for the highest proportion (49.66%), followed by Angle Class Ⅱ malocclusion of the second deciduous molars (17.83% on the left, 19.11% on the right), midline deviation (13.23%), anterior crossbite (6.74%), and crowding of the maxillary and mandibular anterior teeth (16.38% for the maxillary dentition, 17.58% for the mandibular dentition). Multivariate analyses showed that habitual mouth breathing during the day (OR=0.509, P=0.009) and morning dry mouth upon waking (OR=1.455, P=0.023) were independent influencing factors for malocclusion. ConclusionThe prevalence of malocclusion is relatively high among preschool children in Fengxian District, Shanghai,with deep overbite being the dominant trait. Sleep-related breathing conditions (such as habitual mouth breathing during the day and morning dry mouth) is an important influencing factor for malocclusion. Public health authorities should strengthen oral health education and promote the correction of bad habits to reduce the prevalence of malocclusion and improve children’s oral health.

As a commonly used material for removable partial dentures,cobalt-chromium alloy frameworks offer excellent corrosion resistance,processability and stability.However,they also have drawbacks,including a high modulus of elasticity and poor aesthetics.Titanium,known for its lighter weight and superior corrosion resistance,also has disadvantages such as insufficient ductility and higher cost.Thus,exploring materials with improved performance for removable partial dentures has been a hot topic in the field of oral resto-ration.In recent years,poly-ether-ether-ketone(PEEK)has attracted attention for its outstanding mechanical properties,wear resist-ance,and biocompatibility,and has been gradually applied in the oral medicine fields of bone defect repair,implantation,restoration,and orthodontics.This paper provides an overview of the application and research progress of PEEK in the repair of removable partial dentures,and offers a perspective on its future application prospects and development directions in this area.

Objective To analyze the satisfaction of medical experience of outpatients in multi-campus of a large tertiary public hospital.Methods From January to March 2024,a questionnaire on outpatient satisfaction was sent to the outpatient department of Peking University First Hospital daily based on the Questionnaire Star platform to analyze the outpatient satisfaction rate and satisfaction score of medical services,and the influencing factors of outpatient satisfaction were explored by logistic regression analysis.Results Among the respondents,64.0％expressed high levels of satisfaction while 26.1％reported being relatively satisfied.Waiting time and consultation time play an important role.The diagnosis,treatment and health education and schedule of follow-up visits may affect the outpatient experience.Outpatient payment,outpatient environment,outpatient perceived complaints and timely resolution of dissatisfaction all could affect outpatient satisfaction.Conclusion The overall satisfaction of outpatients was high,and patient satisfaction of outpatient medical services in multi-campuses was consistent.On the premise of ensuring the quality of medical care,hospitals should actively carry out individualized health education,simplify the medical process,extend the outpatient service,and further improved the sense of gain of outpatients.

Objective To analyze the satisfaction of medical experience of outpatients in multi-campus of a large tertiary public hospital.Methods From January to March 2024,a questionnaire on outpatient satisfaction was sent to the outpatient department of Peking University First Hospital daily based on the Questionnaire Star platform to analyze the outpatient satisfaction rate and satisfaction score of medical services,and the influencing factors of outpatient satisfaction were explored by logistic regression analysis.Results Among the respondents,64.0％expressed high levels of satisfaction while 26.1％reported being relatively satisfied.Waiting time and consultation time play an important role.The diagnosis,treatment and health education and schedule of follow-up visits may affect the outpatient experience.Outpatient payment,outpatient environment,outpatient perceived complaints and timely resolution of dissatisfaction all could affect outpatient satisfaction.Conclusion The overall satisfaction of outpatients was high,and patient satisfaction of outpatient medical services in multi-campuses was consistent.On the premise of ensuring the quality of medical care,hospitals should actively carry out individualized health education,simplify the medical process,extend the outpatient service,and further improved the sense of gain of outpatients.

Objective:To study positive rates and typing of oligoclonal bands (OCB) in patients with neurological disorders, and to reveal the clinical significance and applicational value of OCB test.Methods:A retrospective analysis was performed on the detection results of 3 217 patients with neurological disorders who undertook both serum and cerebrospinal fluid OCBs in the First Hospital of Peking University from January 2012 to August 2022. According to the final diagnosis, the patients were divided into 13 groups including multiple sclerosis (479 cases), neuromyelitis optica spectrum disorders (935 cases), autoimmune encephalitis (192 cases), viral encephalitis (94 cases), nervous system complication after HSCT (232 cases), Guillain-Barré syndrome (644 cases), chronic inflammatory demyelinating polyneuropathy (157 cases), etc. Cerebrospinal fluid and serum OCBs were detected using isoelectric focusing electrophoresis combining immunofixation, then classified into Ⅰ-Ⅴ types according to the morphology. Consequently, positive rates and types were analyzed for each group. χ2 test was used for comparison between groups. Results:The positive rates of cerebrospinal fluid OCB in multiple sclerosis, nervous system complication after hematopoietic stem cell transplantation (HSCT), autoimmune encephalitis, viral encephalitis, neuromyelitis optica spectrum disorders, Guillain-Barré syndrome and chronic inflammatory demyelinating polyneuropathy were respectively 66.8% (320/479), 48.7% (113/232), 46.4%(89/192), 19.1% (18/94), 17.6% (165/935), 9.9% (64/644), 5.1% (8/157). For patients with multiple sclerosis, neuromyelitis optica spectrum disorders, viral encephalitis, and autoimmune encephalitis, Type Ⅱ bands took the majority of cerebrospinal fluid OCB-positive cases with the rates of 94.1% (301/320), 78.7% (70/89), 77.8% (14/18), and 77.6% (128/165) respectively, indicating intrathecal IgG synthesis; for patients with nervous system complication after HSCT, Guillain-Barré syndrome and chronic inflammatory demyelinating polyneuropathy, type Ⅳ bands took the majority of cerebrospinal fluid OCB-positive cases with the rates of 94.7% (107/113), 82.8% (53/64) and 100% (8/8), indicating no obvious intrathecal IgG synthesis. The positive rates of cerebrospinal fluid oligoclonal bands were significantly different among all groups (χ 2=1 268.31, P<0.001). Conclusion:The positive rates of cerebrospinal fluid oligoclonal bands are different among different neurological disorders, in which the positive rate of cerebrospinal fluid OCB is higher with type Ⅱ bands as the majority type in multiple sclerosis, which indicates that the detection and typing of cerebrospinal fluid OCB are helpful for the diagnosis of various neurological diseases, especially for multiple sclerosis.

【Objective】 To explore the role of ZFP36 in cardiomyocyte injury and autophagy induced by hypoxia/reoxygenation (H/R) so as to clarify its molecular regulatory mechanism. 【Methods】 H9C2 rat cardiomyocytes were infected with ZFP36 overexpressing lentivirus (OE-ZFP36) or its negative control lentivirus (OE-ZFP36 NC) to construct stable cell lines, respectively. Transfection of ATG4D overexpression plasmid (OE-ATG4D) improved the expression of ATG4D. Hypoxia/reoxygenation (H/R) induced myocardial cell injury. H9C2 cells were mainly divided into control group, H/R group, OE-ZFP36 NC+H/R group, OE-ZFP36+H/R group, OE-ATG4D NC+H/R group, OE-ATG4D+H/R group, OE-ZFP36+OE-ATG4D NC+H/R group, and OE-ZFP36+OE-ATG4D+H/R group. The protein expressions of ATG4D, Beclin1, LC3 and ZFP36 in H9C2 cells were detected by Western blotting. The mRNA levels of ZFP36 and ATG4D in H9C2 cells were detected by Real-time fluorescence quantitative PCR (qPCR). The viability of H9C2 cells was detected by CCK-8 assay. The levels of interleukin (IL-6) and tumor necrosis factor (TNF-α) in H9C2 cells were detected by enzyme-linked immunosorbent assay (ELISA). Reactive oxygen species (ROS) in H9C2 cells were detected by DCFH-DA method. SOD detection kit was used to detect the SOD level in H9C2 cells. The apoptosis of H9C2 cells was detected by flow cytometry. LC3 autophagosomes in H9C2 cells were detected by cellular immunofluorescence. Dual-luciferase reporter gene assay was used to detect the binding of ZFP36 and ATG4D mRNA in H9C2 cells. 【Results】 Compared with control group, H/R group showed decreased cell viability, increased IL-6 and TNF-α levels, increased ROS levels and decreased SOD levels, increased cell apoptosis. Up-regulated ATG4D and Beclin1 protein expression, increased LC3Ⅱ/LC3Ⅰ ratio, as well as upregulated ZFP36 expression were found in H/R group (all P<0.05). Compared with OE-ZFP36 NC+H/R group, elevated cell viability, decreased IL-6 and TNF-α levels, decreased ROS levels and increased SOD levels, reduced cell apoptosis (P<0.05), and downregulated ATG4D and Beclin1 protein expression, decreased LC3Ⅱ/LC3Ⅰ ratio were shown in OE-ZFP36+H/R group (all P<0.05). Compared with infection with OE-ZFP36 NC lentivirus, infection with OE-ZFP36 lentivirus decreased the luciferase activity of ATG4D 3′-UTR reporter gene, decreased the stability of ATG4D mRNA, and downregulated the H/R-induced ATG4D mRNA expression (all P<0.05). Compared with OE-ATG4D NC+H/R group, OE-ATG4D+H/R group had upregulated ATG4D mRNA and protein expression, decreased cell viability, increased IL-6 and TNF-α levels, increased ROS levels, decreased SOD levels and elevated cell apoptosis (all P<0.05). Compared with OE-ZFP36+OE-ATG4D NC+H/R group, OE-ZFP36+OE-ATG4D+H/R group had decreased cell viability, increased IL-6 and TNF-α levels, increased ROS levels, decreased SOD levels and elevated cell apoptosis (all P<0.05). 【Conclusion】 The expression of ZFP36 is upregulated in H/R-induced cardiomyocyte injury. The overexpression of ZFP36 inhibits H/R-induced cardiomyocyte injury and autophagy by regulating ATG4D, thus resisting cardiomyocyte H/R injury. It proves that ZFP36 is an important regulatory molecule against MI/RI.

Objective To investigate the efficacy and safety of ultrafiltration therapy in elderly patients with congestive heart failure(CHF)and frailty.Methods A total of 88 hospitalized elderly patients with CHF and frailty were randomly assigned to the ultrafiltration group(n=44)and the control group(n=44).The control group treated with standard drug therapy.The ultrafiltration group treated with ultrafiltration,however,diuretics were not used during ultrafiltration treatment.Efficacy assessment was compared between the two groups,including patient body weight,N-terminal pro-brain natriuretic peptide(NT-proBNP)levels at 48 hours after treatment,dyspnea severity scores at 48 hours and 1 week after treatment,hospitalization duration and readmission rate within 3 months.Safety assessment parameters included serum creatinine,urea nitrogen,Na+and K+concentration at 48 hours after treatment and creatinine level 1 week after treatment.Results Efficacy assessment indicated that at 48 hours after treatment,both groups showed a significant reduction in patient body weight and NT-proBNP levels compared to pre-treatment levels(P＜0.05).However,there were no significant difference in body weight and NT-proBNP levels before and after treatment between the two groups(P＞0.05).Dyspnea severity scores for both groups increased at 48 hours after treatment,then decreased at 1 week after treatment.The ultrafiltration group exhibited higher dyspnea severity scores than that of the control group at 48 hours after treatment(P＜0.05).The length of hospital stay and the rate of re-hospitalization within 3 months were lower in the ultrafiltration group compared to those of the control group(P＜0.05).Safety assessment revealed that there were no significant differences in serum urea nitrogen and Na+levels before and 48 hours after treatment between the two groups(P＞0.05).However,serum K+levels were higher after 48-hours treatment in the ultrafiltration group than those of the control group(P＜0.05).There were no significant changes in creatinine levels before and after treatment in the control group(P＞0.05),while creatinine levels were lower 1 week after treatment in the ultrafiltration group compared to those of pre-treatment and 48 hours after treatment,and were lower than those of the control group(P＜0.05).Conclusion Ultrafiltration is a safe and effective method for elderly patients with CHF and frailty.

ObjectiveTo observe the characteristics of gait symmetry and its influencing factors in patients with incomplete spinal cord injury (ISCI). MethodsFrom May, 2018 to November, 2021, 34 patients with ISCI in Beijing Bo'ai Hospital were divided into symmetrical injury of lower limb (SI) group and asymmetrical injury of lower limb (ASI) group according to the lower extremities motor score (LEMS). Three dimensional motion acquisition system and plantar pressure acquisition system were used for gait test. The symmetry indexes of step length, stance time and swing time were caculated. ResultsThe symmetry indexes of step length, stance time and swing time were significant lower in SI group than in ASI group (|t| > 2.619, P < 0.01). Stance time and swing time significantly correlated to the difference of bilateral LEMS in ASI group (r > 0.468, P < 0.01). Discriminant analysis showed that gait parameter equations were different for patients with different symmetry of lower limb injuries. ConclusionThe symmetry of lower limb motor function impacts gait symmetry for patients with ISCI, especially the difference value of bilateral total LEMS. Gait parameters can be used to determine the symmetry of lower limb injury in patients with ISCI.