Objective To analyze the status and the distribution of causes of injuries as well as disease burden in children under 5 years old in Sichuan Province.Methods The death information cards of children who died because of injuries in Sichuan Province in 2012 were analyzed,and the years of potential life lost and working years of potential life lost were calculated to evaluate the disease burden.Results 22.87％ (1 502/6 567) of children lost their lives because of injuries,the mortality of injury was 4.13‰,63.45％ of children died at the age between l and 4,and most of the children died at home or on the road; The top 3 causes of children death of injuries below 5 years old were drowning,accidental suffocation and traffic accidents.The years of potential life lost and working years of potential life lost were 73.05 years and 58.30 years.Conclusion Injury is one of the most mainly risk factor of health and life of children,the government should further prevent and control children injuries.

Objective:To clarify the significance of the fractional anisotropy(FA) value and apparent diffusion coefficient(ADC) value of diffusion tensor imaging(DTI) applied in the glioma grading with Meta-analysis, and to provide a reference for selecting the treatment program and judging the prognosis of glioma.Methods:Computer search was performed in PubMed database, EMBASE database,CBM, CNKI, Wanfang database, and VIP database.The relevant neurosurgery magazines and neuroimaging magazines, the proceedings of academic meeting were retrieved by hand and the references of related reviews were retrospectively retrieved.Then the case-series studies according to inclusion and exclusion criteria were screened,and the qualities of included studies were evaluated.Meta-analysis was carried out by Review Manager 5.2 software.Results:Nine studies were included.The FA value of low-grade glioma(LGG) in tumor centre was lower than that of high-grade glioma(HGG) (χ2=11.94,df=8,P=0.15;I2=33%,Z=2.78,P=0.005;WMDFA=-0.02,95%CI:-0.03--0.01),and the ADC value of LGG in tumor centre was higher than that of HGG (χ2=5.26,df=4,P=0.26;I2=24%,Z=2.19,P=0.03;WMDADC=0.15,95%CI:0.02-0.28).Conclusion:When the FA value in tumor centre of the glioma is increasd,the ADC value is decreased,and the grade of glioma is increasd.The FA value and ADC value of DTI can help determine the grade of gliomas.

Objective:Through analysis of the development status of pediatric and the problems faced by pediatric young scientists, combined with the situation of research management, this paper puts forward some suggestions.Methods:Collect the identified problems of pediatric development, summarize the common ones and propose methodological strategies for scientific research management.Results:The development of pediatrics faces problems such as insufficient resources, unreasonable resource allocation and talents shortage.Conclusions:It is recommended to support the development of pediatric according to optimize the scientific research management model, establish a reasonable evaluation and incentive mechanism, establish a pediatric talent training model and team, improve the pediatric research level, and obtain policy support for salary, talent introduction and training, promotion of professional titles, research resources and so on.

Objective:Currently,traditional cervical cancer screening methods,such as high-risk human papillomavirus testing and liquid based cytology(LBC),still possess limitations.This study aims to identify new diagnostic biomarkers to achieve the goal of"precision screening"via exploring the clinical value of DNA methylation[ΔCtP:paired box gene 1(PAX1)and ΔCtJ:junctional adhesion molecule 3(JAM3)]detection in cervical exfoliated cells for the diagnosis of high-grade cervical lesions. Methods:A total of 136 patients who underwent gynecological examinations in the vaginal room of the Department of Gynecology at the Third Xiangya Hospital of Central South University from June 2021 to June 2022 were retrospectively studied.Among them,122 patients had non-high-grade cervical lesions,and 14 patients had high-grade cervical lesions.The variables included general information(age,body mass index,and menopause status),LBC,high-risk human papillomavirus,cervical tissue pathology,vaginal examination results,and the ΔCt values of JAM3 and PAX1 gene methylation.Logistic regression analysis was used to identify the factors affecting the diagnosis of high-grade cervical lesions,followed by correlation analysis and construction of a conditional inference tree model. Results:Logistic regression analysis showed that the methylation ΔCt values of PAX1 and JAM3 genes and LBC detection results were statistically significant between the high-grade cervical lesions group and the non-high-grade cervical lesions group(all P<0.05).Correlation analysis revealed a negative correlation between cervical pathological changes and ΔCtP(r=-0.36,P<0.001),ΔCtJ(r=-0.448,P<0.001),LBC(r=-0.305,P<0.001),or bacterial diversity(r=-0.183,P=0.037).The conditional inference tree showed that when ΔCtJ>10.13,all of patients had non-high-grade cervical lesions,while ΔCtP>6.22,the number of non-high-grade lesions accounted for 97.5%(117/120),and high-grade lesions accounted for only 2.5%(3/120).When ΔCtJ>8.61 and LBC were atypical squamous cell of undetermined significance or negative for intraepithelial lesions or malignancy(NILM),105(99.1%)patients were non-high-grade cervical lesions,only 1(0.9%)patient was high-grade lesion.When the results of LBC were high-grade lesions,only 9 patients'histopathological examination was the high-grade lesions and 3 non-high-grade lesions.When LBC indicated low-grade lesions,atypical squamous cell of undetermined significance,no intraepithelial lesions,and ΔCtP>6.22,117(97.5%)of patients'histopathological examination was the non-high-grade lesions. Conclusion:The JAM3/PAX1 gene methylation test can be used independently for the stratified diagnosis of high-grade/non-high-grade cervical lesions in women with high-risk human papillomavirus infection,independent of the cytological results of cervical excision.The JAM3/PAX1 gene methylation test can also be used in combination with LBC to make up for the shortcomings of low sensitivity of LBC.In addition,the application of methylation kit in large-scale cervical cancer screening in the future will be good to the detection of more patients with high-grade cervical lesions,and achieve early screening and early treatment for cervical lesions/cancer.

Purpose: This study aimed to develop a nomogram for predicting pathologic complete response (pCR) after neoadjuvant chemoradiotherapy (CRT) in patients with esophageal squamous cell carcinoma (ESCC) by integrating hematological biomarkers and clinicopathological characteristics. Materials and Methods: Between 2003 and 2017, 306 ESCC patients who underwent neoadjuvant CRT followed by esophagectomy were analyzed. Besides clinicopathological factors, hematological parameters before, during, and after CRT were collected. Univariate and multivariate logistic regression analyses were performed to identify predictive factors for pCR. A nomogram model was built and internally validated. Results: Absolute lymphocyte count (ALC), lymphocyte to monocyte ratio, albumin, hemoglobin, white blood cell, neutrophil, and platelet count generally declined, whereas neutrophil to lymphocyte ratio (NLR) and platelet to lymphocyte ratio (PLR) increased significantly following neoadjuvant CRT. After surgery, 124 patients (40.5%) achieved a pCR. The pCR group demonstrated significantly more favorable survival than the non-pCR group. On multivariate analysis, significant factors associated with pCR included sex, chemotherapy regimen, post-CRT endoscopic finding, pre-CRT NLR, ALC nadir during CRT, and post-CRT PLR, which were incorporated into the prediction model. The nomogram indicated good accuracy in predicting pCR, with a C-index of 0.75 (95% confidence interval, 0.71 to 0.78). Conclusion Female, chemotherapy regimen of cisplatin/vinorelbine, negative post-CRT endoscopic finding, pre-CRT NLR (≤ 2.1), ALC nadir during CRT (> 0.35 ×109/L), and post-CRT PLR (≤ 83.0) were significantly associated with pCR in ESCC patients treated with neoadjuvant CRT. A nomogram incorporating hematological biomarkers to predict pCR was developed and internally validated, showing good predictive performance.

OBJECTIVETo study the mortality of children under five and the causes of death together with related trend of dynamics, from 2001 to 2013 in Sichuan province.

METHODSUsing the Children Death Monitoring Network under five in Sichuan province to obtain basic data. Descriptive statistics and chi-square were used to describe the mortalities in children and infants as well as the causes of death, in both rural and urban areas of Sichuan province.

RESULTSIn Sichuan province, the mortality of children under five decreased from 35.30‰ in 2001 to 11.77‰ in 2013. In 2013, mortality in the rural areas was 2.37 times more than that in the urban area. The proportion of neonatal deaths among the mortality in children under five was 44.72%. Pneumonia, congenital heart diseases and premature or low birth weigh were the top three causes of death for children under five. Among them, the top three causes of death for urban area were congenital heart disease, drowning, and premature or low birth weight/birth asphyxia. Meanwhile, the top three causes of death in rural areas were pneumonia, premature birth/low birth weight and birth asphyxia. Overall, the mortality rates of birth asphyxia, pneumonia and low birth weight gradually decreasd but drowning, diarrhea and traffic accidents fluctuated.

CONCLUSIONThe mortality of children under five in Sichuan province was 13‰, which had already met the goal set for the year 2020. However, reducing the mortality in rural areas, narrowing the gap between urban and rural areas seemed the main part of the future endeavor while focus of prevention should be adjusted according to the causes of death.

【Objective】 To perform quantitative analysis on the sample provincial laws and regulations for voluntary blood donation, and provide reference for further revision of laws and regulations. 【Methods】 31 study samples were current provincial laws and regulations for voluntary blood donation that can be collected from open sources. The issue date and the revision date of each sample were recorded. With "The Blood Donation Law of the People’s Republic of China" as reference, 5 categories were formed and additional clauses in samples were coded and rated following content analysis procedures. Sample provinces were divided into two groups based on donation rate and their differences in evaluation scores of categories were examined using rank sum test. 【Results】 Until December, 2021, 31 sample provinces had issued and implemented provincial laws and regulation for voluntary blood donation, and 14 of which had been revised. Many detailed clauses (total score 9.32±3.09) were added in sample provincial laws and regulations, more clauses were added in the categories of 'related government agencies and their responsibilities’, 'management of clinical blood use’ and 'rewards and punishment’. Sample provinces were divided into two groups according to the donation rate per 1 000 people recommended by World Health Organization(10‰). Compared to lower donation rate group, the total score and sub score in the categories of 'basic principles’, 'management of blood collection and supply’ were significantly higher in higher donation rate group. 【Conclusion】 In revision and improvement of provincial laws and regulations, 'basic principles’ and 'management of blood collection and supply’ could be considered. This assay mainly tries to provide a new research perspective and perform quantitative analysis on content of sample provincial laws and regulation for voluntary blood donation, the actual effect of the results in this study need longer time to be examined, and we will keep following its new advances.

Ferroptosis, as a newly discovered cell death form, has become an attractive target for precision cancer therapy. Several ferroptosis therapy strategies based on nanotechnology have been reported by either increasing intracellular iron levels or by inhibition of glutathione (GSH)-dependent lipid hydroperoxidase glutathione peroxidase 4 (GPX4). However, the strategy by simultaneous iron delivery and GPX4 inhibition has rarely been reported. Herein, novel tumor microenvironments (TME)-activated metal-organic frameworks involving Fe & Cu ions bridged by disulfide bonds with PEGylation (FCSP MOFs) were developed, which would be degraded specifically under the redox TME, simultaneously achieving GSH-depletion induced GPX4 inactivation and releasing Fe ions to produce ROS