Objective To explore the CT imaging features and independent risk factors for cystic pulmonary nodules and establish a malignant probability prediction model. Methods The patients with cystic pulmonary nodules admitted to the Department of Thoracic Surgery of the First People's Hospital of Neijiang from January 2017 to February 2022 were retrospectively enrolled. They were divided into a malignant group and a benign group according to the pathological results. The clinical data and preoperative chest CT imaging features of the two groups were collected, and the independent risk factors for malignant cystic pulmonary nodules were screened out by logistic regression analysis, so as to establish a prediction model for benign and malignant cystic pulmonary nodules. Results A total of 107 patients were enrolled. There were 76 patients in the malignant group, including 36 males and 40 females, with an average age of 59.65±11.74 years. There were 31 patients in the benign group, including 16 males and 15 females, with an average age of 58.96±13.91 years. Multivariate logistic analysis showed that the special CT imaging features such as cystic wall nodules [OR=3.538, 95%CI (1.231, 10.164), P=0.019], short burrs [OR=4.106, 95%CI (1.454, 11.598), P=0.008], cystic wall morphology [OR=6.978, 95%CI (2.374, 20.505), P<0.001], and the number of cysts [OR=4.179, 95%CI (1.438, 12.146), P=0.009] were independent risk factors for cystic lung cancer. A prediction model was established: P=ex/(1+ex), X=–2.453+1.264×cystic wall nodules+1.412×short burrs+1.943×cystic wall morphology+1.430×the number of cysts. The area under the receiver operating charateristic curve was 0.830, the sensitivity was 82.9%, and the specificity was 74.2%. Conclusion Cystic wall nodules, short burrs, cystic wall morphology, and the number of cysts are the independent risk factors for cystic lung cancer, and the established prediction model can be used as a screening method for cystic pulmonary nodules.

BACKGROUND:The pedicle navigation template has many advantages,but there are still some problems.For example,poor soft tissue dissection leads to poor adhesion of the pedicle navigation template,resulting in screw path deviation;careful dissection of soft tissue to fit the pedicle navigation template leads to prolonged surgery time and increased bleeding;the design of the pedicle navigation template cannot predict the vertebral rotation and the impact of body position changes,resulting in the poor fitting. OBJECTIVE:To explore the utility of a new 5-point positioning point-contact pedicle navigation template in the case of scoliosis and complex pedicle. METHODS:A total of 20 patients with scoliosis and complicated pedicle admitted to the Department of Spinal Surgery,Guizhou Hospital,Beijing Jishuitan Hospital from February 2020 to February 2023 were selected for scoliosis orthopedics.During the operation,the 5-point positioning point-contact pedicle navigation template was used to guide the screws.According to the inclusion and exclusion criteria,34 cases were matched as the empirical nail placement group,and conventional barehanded nail placement was performed.The time of placement,the amount of bleeding,the number of fluoroscopies,the number of manual diversions,the level and accuracy of pedicle screws,the complications of placement,and the rate of correction of main curvature were compared between the two groups. RESULTS AND CONCLUSION:(1)There were no significant differences in sex,age,coronal Cobb's angle of the main curvature,bending Cobb's angle of the main curvature,pedicle variation,apex rotation,fusion segment,number of screws,level of screws,accuracy of screws,and rate of correction of main curvature between the navigation template group and the empirical nail placement group(P>0.05).(2)Compared with the empirical nail placement group,the navigation template group had more advantages in time of placement(P=0.034),amount of bleeding(P=0.036),number of fluoroscopies(P=0.000)and number of manual diversions(P=0.021).(3)There were 0 cases of screw-related complications in both groups.(4)In conclusion,the 5-point positioning point-contact 3D printing pedicle navigation template has a claw-like structure.It can firmly adapt to various deformities of the lamina articular process,avoid drift,and accurately place the screws.It has a point-like contact lamina structure to avoid extensive and complete dissection of the posterior structure,and reduce bleeding,operation time,and trauma.Pre-designed screw entry points and directions can reduce the number of fluoroscopy and operation time.Segmental design can avoid discomfort due to changes in anesthesia position.The operation is simple and the accuracy of screw placement is high.

Epigenomic imbalance drives abnormal transcriptional processes,promoting the onset and progression of cancer.Although defective gene regulation generally affects carcinogenesis and tumor suppression networks,tumor immunogenicity and immune cells involved in antitumor responses may also be affected by epigenomic changes,which may have significant implications for the development and application of epigenetic therapy,cancer immunotherapy,and their combinations.Herein,we focus on the impact of epigenetic regulation on tumor immune cell function and the role of key abnormal epigenetic processes,DNA methylation,histone post-translational modification,and chromatin structure in tumor immunogenicity,and introduce these epigenetic research methods.We emphasize the value of small-molecule inhibitors of epigenetic modulators in enhancing antitumor immune responses and discuss the challenges of developing treatment plans that combine epigenetic therapy and immuno-therapy through the complex interaction between cancer epigenetics and cancer immunology.

Objective To investigate the early cognitive development characteristics of children with Williams syndrome(WS)at different age stages.Methods From September 2018 to June 2023,106 children diagnosed with WS at the Department of Pediatric Health Care,Children's Hospital,Zhejiang University School of Medicine,aged 1 to<5 years,were prospectively enrolled.All children underwent Gesell developmental diagnostic assessments to analyze the cognitive development characteristics of WS children across different age groups.Results The average age of the 106 WS children was(3.1±1.2)years;58 were male,and 48 were female.There were no significant differences in developmental levels between males and females in the five domains of gross motor skills,fine motor skills,language,personal-social skills,and adaptive behavior(P>0.05).The incidence rates of mild,moderate,severe,and profound developmental disabilities among children of different age groups showed no significant differences(P>0.05).Comparisons of developmental levels in gross motor skills,language,personal-social skills,and adaptive behavior among different age groups were also not statistically significant(P>0.05).With the increase of age,the developmental level of fine motor skills showed a decreasing trend(P<0.05).There were no significant differences in verbal IQ and non-verbal IQ within each age group of WS children(P>0.05).Conclusions The overall developmental level of WS children stabilizes with age,and their early language abilities do not significantly exceed their non-verbal abilities.

Objective To compare the effect of patient-controlled intravenous analgesia(PCIA)and superior inguinal liga-ment iliac fascia block combined with PCIA after hip replacement in the elderly.Methods Total of 82 elderly patients were treated with hip arthroplasty from June 2019 to June 2021 and randomly divided into observation group and control group.There were 42 patients in control group,including 18 males and 24 females,aged from 60 to 78 years old with an average of(70.43±3.67)years old,28 femoral neck fractures and 14 femoral head necrosis,who received PCIA.The study group consist-ed of 42 cases,including 20 males and 22 females,aged from 61 to 76 years old with an average of(69.68±3.74)years old,25 femoral neck fractures and 17 femoral head necrosis,who received superior inguinal ligament iliac fascia block combined with PCIA.Pain visual analogue scale(VAS)and Ramesay sedation scores at2h,6h,12h,24h and 48 h after operation were e-valuated.In addition,the follow-up results of the total consumption of sufentanil and the total number of PCIA compressions at 48 hours after operation,the first time of landing after surgery,the time of hospital stay,the incidence of adverse reactions,the satisfaction with analgesia of two groups were observed.Results All patients were followed up for 9 to 24 months with an aver-age of(13.85±2.67)months.There was no significant difference in operation time and intraoperative bleeding between two groups(P＞0.05).There was no difference in VAS between two groups at 2 hours after operation(P＞0.05),and the VAS of the study group at 6 h,12 h,24 h and 48 h after operation were lower than those of the control group(P＜0.05).The Ramesay seda-tion scores of the study group at 2 h,6 h and 12 h after operation were higher than those of the control group(P＜0.05),and there were no differences in Ramesay score between two groups at 24 h and 48 h after operation(P＞0.05).The consumption of sufentanil in the study group within 48 hours after operation was lower than that in the control group(P＜0.05),and PCIA com-pression times were lower than those in the control group(P＜0.05),and the time of first landing was earlier than that in the control group(P＜0.05).There was no significant difference in hospital stay,adverse reaction rate,complications between two groups(P＞0.05).The satisfaction of analgesia in the study group was higher than that in the control group(P＜0.05).Conclu-sion Superior iliac fascia block of inguinal ligament combined with PCIA has significant analgesic and sedative effects after hip arthroplasty in the elderly.It can reduce the amount of sufentanil used and the total number of PCIA compressions,which is conducive to the early activity of patients out of bed,improve the satisfaction of analgesia.

The epidemiological and spatiotemporal distribution characteristics of human leptospirosis in Zhejiang Province from 2018 to 2022 were analyzed,to provide a scientific basis for formulating leptospirosis prevention and control strategies.Data on leptospirosis were collected from the China Information System for Disease Control and Prevention,and analyzed with descriptive epidemiological methods.ArcMap 10.8 software was used for spatial autocorrelation analysis and visual display of the results.SaTScan 10.1.2 software was used for spatiotemporal scanning,to analyze and describe the spatiotemporal aggrega-tion characteristics of leptospirosis.A total of 255 human cases of leptospirosis were reported in Zhejiang Province from 2018 to 2022,including one death;the average annual incidence was 0.084 3/100 000,and the average annual mortality was 0.000 3/100 000.The highest incidence of leptospirosis in Zhejiang occurred from August to October.Most cases were in middle-aged and older people 45-86 years of age(221 cases,86.67％).The number of cases was highest among people 65-69 years of age(57 cases).The male to female ratio was 4.67∶1.The main occupation was farming(190 cases,74.51％).The cumulative number of cases in Wenzhou and Lishui in 3 years(201 cases)accounted for 78.82％of the total cases.The global spatial auto-correlation analysis from 2018 to 2022 showed that the incidence of leptospirosis in the province presented a positive spatial au-tocorrelation.Local spatial autocorrelation analysis indicated that the"high-high"gathering areas were concentrated primarily in Wenzhou,Lishui,and Taizhou in the mountainous and hilly areas of southern Zhejiang Province.Spatiotemporal scanning anal-ysis revealed three clusters with high incidence in southern Zhejiang Province.The incidence of leptospirosis in Zhejiang Prov-ince showed clear regional clustering and seasonality,and the high incidence area was mainly in the mountainous and hilly areas of southern Zhejiang Province.The cases occurred mainly in middle-aged and older male farmers.Health education among rural resi-dents should be strengthened to prevent potential epidemic risks.

This study adopted the policy text analysis method,review the historical background of the enactment,aimed to comparatively analyze the international pharmaceutical trade policies of the BRICS countries.The main objectives of the BRICS countries'international pharmaceutical trade policies included ensuring stable and accessible drug supply,expanding exports of domestic products and creating a favorable political environment.For these purposes,Brazil,Russia,and South Africa all ensure drug supply through substantial imports.However,they have also taken measures such as compulsory patent licensing and promoting localization of production by foreign companies to reduce import dependence.India,on the other hand,protects its domestic industry by resisting drug imports to ensure drug supply while simultaneously promoting the export of pharmaceutical products.China continually optimizes approval and data monitoring procedures to align with international standards,creating a favorable trade environment and expanding exports.China should further refine its international pharmaceutical trade policies while ensuring the autonomy of domestic drug research and supply,fostering stronger collaboration within BRICS nations and promoting global access to public healthcare products.

Objective:To investigate the effects of modified electroconvulsive therapy(MECT)in combina-tion with medication and medication alone on relapse and cognitive functioning in patients with major depressive disorder(MDD).Methods:Totally 324 patients meeting the diagnostic criteria ofthe DSM-5 for MDD were select-ed and divided into combined MECT group(n=117)and non-combined MECT group(n=207).At baseline and 5 years of follow-up,both groups completed the General Information Questionnaire,Montreal Cognitive Assessment(MoCA),and Hamilton Depression Scale(HAMD)to analyze associations between cognitive functioning and mul-tiple variables.Results:At baseline,there were no significant differences between the two groups on general infor-mation,MoCA,and HAMD scores(Ps＞0.05).After 5 years of follow-up,the relapse rate was lower in the com-bined MECT group than in the un-combined MECT group[(37.6％vs.72.0％),P＜0.001].MECT was a protec-tive factor against recurrence of MDD[RR(95％CI)=0.52(0.40-0.66)],and the MoCA scores were lower in the combined MECT group than in the un-combined MECT group[(20.9±3.5)vs.(23.6±4.2),β=-1.93,P＜0.001].Conclusion:Combined MECT is a protective factor against MDD recurrence.Its effects on the cognitive functioning of MDD patients may have long-term effects.

Objective:To evaluate the efficacy and safety of rituximab in pediatric myasthenia gravis (MG).Methods:Case series study. The clinical manifestations, laboratory tests, treatment plans and prognosis of 27 pediatric MG patients treated with rituximab from June 2013 to June 2023 at Children′s Medical Center of Peking University First Hospital were retrospectively collected.Results:There were 5 males and 22 females in 27 MG children. The onset age was 2.1 (1.6, 4.8) years, ranging from 8 months to 11 years. The clinical classification included 20 children (74%) of ocular MG and 7 children (26%) of generalized MG. Seventeen children (63%) had positive MG-related pathogenic antibodies, including 17 children of anti-AchR antibody and 1 of them also had anti-MuSK antibody. Rituximab was used as first-line immunosuppressant in 13 children, second-line immunosuppressant in 13 children and third-line immunosuppressant in 1 child. Immunosuppressants used before rituximab including 8 children of cyclosporine, 3 children of tacrolimus, 1 child of azathioprine, 1 child of mycophenolate mofetil and 1 child of cyclosporine combined with azathioprine. Rituximab was used for at least half a year with a follow-up period of more than 12 months. At the last follow-up after rituximab treatment, all children achieved improved or above, 14 children (52%) achieved complete stable remission, 7 children (26%) achieved pharmacologic remission, 1 child (4%) achieved minimal manifestations, and 5 children (18%) improved. After rituximab treatment, 27 children all could reduce the immunomodulation therapy and shorten the course of glucocorticoid therapy, and 22 children (81%) had stopped the glucocorticoid therapy. Among the 14 children with poor efficacy of other immunosuppressants, rituximab had complete stable remission of 7 children. The most common adverse reaction was respiratory infection (4 children (15%)). Only 2 children had allergic reaction to rituximab and got better after symptomatic treatment.Conclusions:Rituximab has good efficacy and tolerance in pediatric MG. Early application of rituximab can improve the prognosis and shorten the course of glucocorticoid treatment.

ObjectiveTo explore the influencing factors of different scores on predicting death risk of extremely low birth weight infants （ELBWI）. MethodsA total of 186 cases of ELBWI admitted by the Children's Hospital affiliated to Nanjing Medical University and the Lishui Branch of the Affiliated Zhongda Hospital of Southeast University were admitted from January 1， 2019 to January 1， 2021， and 125 ELBWIs were finally included after screening by inclusion and exclusion criteria. There were 47 cases in the death group and 78 cases in the survival group. General data and the items of score for neonatal acute physiology version Ⅱ （SNAP-Ⅱ）， simplified version of the score for neonatal acute physiology perinatal extension （SNAPPE-Ⅱ）， clinical risk index for babies （CRIB）， clinical risk index for babies Ⅱ （CRIB-Ⅱ） and the national critical illness score （NCIS） were collected. Univariate and multivariate analysis was performed and nomogram was evaluated using receiver operating characteristic curve （ROC）. ResultsIt was found that systolic blood pressure， maximum inhaled oxygen concentration， BE value and birth weight were important factors in ELBWI mortality risk assessment ［systolic blood pressure OR： 0.968， 95%CI： 0.938-0.999， P=0.043； maximum inhaled oxygen concentration OR： 1.020， 95%CI： 1.006-1.034， P=0.006； BE OR： 0.868， 95%CI： 0.786-0.959， P=0.005； birth weight OR： 0.994， 95%CI： 0.991-0.997， P=0.000］. ROC showed that the area under the curve of the above four variables is 0.71， and the 95% confidence interval is 0.610-0.799， which is better than CRIB score. ConclusionLower systolic blood pressure， higher inhaled oxygen concentration， higher BE and lower birthweight are important influencing factors to predict the death risk of ELBWI. The above four items should be included in the newly developed score assessment to obtain a more effective ELBWI prediction system.