Objective: To analyze the causes of death in Keqiao District, Shaoxing City in 2020, so as to provide the evidence for formulating the disease control strategy. Methods: The dead cases' gender, age and causes of death in Keqiao District, 2020, were collected from Shaoxing Municipal Public Health Information System, and the mortality was estimated and standardized by the 2020 Chinese standard population. The gender- and age-specific mortality and distribution of causes of death were analyzed, and the years of potential life lost (YPLL), average years of potential life lost per death (AYLL) and YPLL rate (YPLLR) were calculated to evaluate the life lost. Results: The crude and standardized mortality rates of registered residents in Keqiao District were 636.97/105 and 494.72/105, respectively. The crude and standardized mortality rates were 712.67/105 and 512.23/105 in men and 564.75/105 and 473.25/105 in women, and a higher mortality rate was seen in men than in women (χ2=59.628, P<0.001). The mortality reduced and then increased with age, and peaked among residents at ages of 85 years and older (13 910.90/105). Chronic disease was the main cause of death, accounting for 85.60% of all causes of death and showing a mortality rate of 545.27/105. Cancer, cardiopathy, cerebrovascular disease, injury and poisoning, and respiratory diseases were the five leading causes of death, and lung cancer, gastric cancer, colorectal cancer, liver cancer and pancreatic cancer were the five leading causes of cancer-related mortality. The highest YPLL was caused by cancers (13 015.00 person-years), with a YPLLR of 1.88%, and the highest AYLL was caused by injury and poisoning (10.37 years). Conclusion Chronic non-communicable diseases, such as cancer and cardio-cerebrovascular diseases, were main causes of death among residents in Keqiao District in 2020. The management of chronic diseases requires to be reinforced to improve the quality of life.

Objective To observe the expression level and diagnosis performance of serum exosomal miR-21 in lung cancer. Method Sera of 94 lung cancer patients,29 pulmonary tuberculosis patients,and 26 healthy controls from Nan Fang Hospital were collected. Exosomes in serum were purified and characterized ,and miRNA was abstracted from exosomes. Levels of exosomal miR-21 in three groups were compared with relative quantitative RT-PCR. Diagnosis performance of exosomal miR-21 was evaluated by ROC curve. Results Purified serum exosome sample possesses typical exosome features. There were significant difference among exosomal miR-21 levels from lung cancer ,tuberculosis ,and health control group. Exosomal miR-21 obviously increased in lung cancer patients,and decreased in tuberculosis patients. Exosomal miR-21 were increased in early and late stage lung cancer patients. The diagnostic performance of exosomal miR-21 was evaluated by ROC curve. Its area under the curve was 0.702 and specificity was 0.923. Conclusions Serum exosomal miR-21 was increased in many kinds of lung can-cer patients. It possesses excellent diagnosis performance ,which may be developed as new biomarkers to assist lung diagnosis.

Objective The effect of serum exosome isolation method on obtained exosomal RNA is not yet clear .The aim of this study was to provide evidences to selected exosome isolation methods .Methods This was a method comparison study to assess three methods .Vein blood samples were collected from 3 healthy donors from Nanfang hospital , 4 ℃ 12 h was taken to make blood natural coagulated and the supernatant was taken as the serum . Exosomes extracted by Ultracentrifugation , ExoQuick and Total Exosome Isolation Reagent ( TEI ) kits from serum were assessed by transmission electron microscopy , nanoparticle tracking analysis and protein analysis to identify morphology , protein expression , concentration and size distribution of particles .ExoRNA extracted by Trizol-LS, SeraMir, Total Exosome RNA Isolation ( TER) and exoRNeasy were assessed by Bioanalyzer 2100 and qPCR to ascertain RNA distribution and miRNA expression.Results For exosomes isolation , two commercial kits ( ExoQuick and TEI ) showed higher exosomes recovery and protein concentration than ultracentrifugation , but exosome isolated by ultracentrifugation expressed abundant protein makers mostly .For exo-RNA isolation, the distribution of RNA and expression of miRNAinfluenced by three methods , but there was no effect on the relative expression trend of miRNA.ExoRNeasy resulted in the highest yield and most narrow size distribution pattern of small RNA with higher level of miRNA expression .Results of TEI with TER kits showed no obvious bands of small RNA and moderate miRNA expression among methods .Ultra with Trizol-LS or ExoQuick with SeraMir showed low concentration measurable bands around 100 nt, with changeable miRNA profiling irregularly . Conclusions Extraction of exosomes using traditional ultracentrifugation method is applicable for proteomics research work .Extraction using ExoQuick and TEI kits is suitable for preparing exosomes from scarce samples such as serum.

Objective:To identify the current situation of contract signing for family physician services in Luohu District, Shenzhen, and to explore the associated factors with contract signing and access to services.Methods:Using the WeChat official account of"People′s Hospital of Luohu", an online survey was conducted to investigate the status of family physician′s contract services for residents in Luohu District from May 19th to 25th, 2019. A total of 14 487 valid responses were received. Chi-square test and Logistic regression models were used to analyze the contract signing of family physician services and the related factors.Results:8 560 (59.09%) of the participants had signed with a family physician, and 12 696 of them had learnt about the service before. The awareness rate of family doctor services was 87.64%. The contract signing rate of those unemployed, who living or working in Luohu less than 5 years, who living alone, having no Shenzhen medical insurance, or having not heard of family physicians signing services were less than 50%. The signing rate was positively correlated with the awareness of family physician contract service, as well as the possibility of accepting signed medical examination, traditional Chinese medicine services and health information. Only 9.70% of the contractors received health services information.Conclusions:The contract Signing rates and awareness rate of family physicians among young and middle-aged residents in Luohu District are relatively high. However, access to contract services varies considerably. The signing rate and accepted services are mainly affected by job, length of residence in Shenzhen, type of medical insurance, and understanding of contract.

Objective To compare the estimated glomerular filtration rates (eGFR) by five formulas based on serum creatinine (SCr), and to explore the diagnostic efficacy of full age spectrum (FAS) equation based on SCr for renal insufficiency in patients with chronic kidney disease (CKD).Methods 2219 patients with CKD admitted to department of nephrology of Guangdong Provincial Second People's Hospital from December 2015 to January 2018 were enrolled. According to the diagnostic criteria of kidney disease outcomes quality initiative (K/DOQI), patients were divided into CKD 1-5 stages. In all patients, Tc-GFR was measured by clearance rate of99mTc-diethylene triaminepen taacetic acid (99mTc-DTPA) within 1 month, and SCr was determined. The eGFR was calculated by Cockcrofi-Gault (C-G) formula bases on SCr, Chinese modified modification of diet in renal disease (cMDRD) equation, Chronic Kidney Disease Epidemiology Collaboration Group (CKD-EPI) equation, measure and calculation (MC) equation and FAS equation, respectively, and body surface area (BSA) was used for correction of eGFR. The differences of Tc-GFR and eGFR calculated by different formulas were compared, and the correlations between eGFR calculated by different formulas and Tc-GFR were analyzed by Spearman correlation analysis. Tc-GFR was used as a reference standard to evaluate the bias,precision and accuracy of eGFR formulas, and the receiver operating characteristics (ROC) curve of each eGFR formula was plotted to evaluate its diagnostic efficacy for renal insufficiency in patients with CKD.Results According to the inclusion and exclusion criteria, 382 patients with CKD were enrolled in the final analysis. There were 31, 69, 92, 75 and 115 patients with CKD 1-5 stages, respectively. In all patients, the differences between Tc-GFR and eGFR calculated by different formulas were statistically significant, and eGFR was positively correlated with Tc-GFR. The best correlation coefficient was between eGFR of cMDRD formula and Tc-GFR (r = 0.883,P = 0.000), and the lowest was of MC formula (r = 0.848,P = 0.000). The best correlation between the eGFR calculated by FAS formula and the Tc-GFR was in CKD 2 stage (r = 0.538,P = 0.000), and the lowest correlation was found in CKD 5 stage (r = 0.229,P = 0.014). Compared with Tc-GFR (the reference equation), the FAS formula showed the smallest bias [the difference between Tc-GFR and eGFR = 8.64, 95％ confidence interval (95％CI) = 7.04-10.19], and the best accuracy [the percentage of eGFR falling into the range of Tc-GFR±30％ (P30) = 42.67％, 95％CI = 37.69-47.65]; CKD-EPI equation showed the best precision (QR of the difference between Tc-GFR and eGFR = 17.43, 95％CI = 15.33-21.28). ROC curve analysis showed that the area under the curve (AUC) of cMDRD formula was the largest (0.944), and the specificity was the highest (87.23％);the sensitivity of CKD-EPI formula was the highest (94.00％); and the AUC of MC formula was the smallest (0.918). The AUC of FAS formula was 0.940 (95％CI = 0.917-0.964,P = 0.000), it was higher than that of MC formula, but there was no significant difference between FAS formula and other formulas. When the cut-off value of eGFR calculated by FAS formula was 32.62 mL·min-1·1.73 m-2, the sensitivity, specificity, positive predictive value, negative predictive value was 93.00％, 81.56％, 83.64％, 11.54％, respectively.Conclusion Compared with C-G formula, cMDRD formula, CKD-EPI formula and MC formula, FAS formula showed smaller bias and higher accuracy, and had higher specificity and sensitivity in the diagnosis of renal insufficiency in patients with CKD, which could be applied to the determination of GFR in early stage of CKD.Clinical Trial Registration Chinese Clinical Trial Registry, ChiCTR1800017727.

Objective:To establish a prognostic Nomogram model for predicting the risk of early death in polytrauma patients.Methods:Data extracted from a polytrauma study on Dryad, an open access database, was selected for secondary analysis. Patients from 18 to 65 years old with polytrauma in the original data were included. All patients with missing variables, such as blood lactic acid (Lac), Glasgow coma score (GCS) and injury severity score (ISS) at admission, were excluded. The differences of gender, age, Lac, ISS and GCS scores between the patients who died within 72 hours and those who survived were analyzed. The risk factors for 72-hour death were analyzed by Logistic regression, and the Nomogram prediction model was established using R software. The receiver operating characteristic (ROC) curve was used to evaluate the predictive ability of the model, and the Bootstrap method was used for internal verification by repeating sample for 1 000 times. Decision curve (DCA) was applied to analyze the clinical practical value of the model.Results:A total of 2 315 polytrauma patients were included. Logistic regression analysis showed that Lac, GCS score and age > 55 years old were the risk factors for early death in polytrauma patients [Lac: odds ratio ( OR) = 1.36, 95% confidence interval (95% CI) was 1.29-1.42, P < 0.001; GCS score: OR = 0.76, 95% CI was 0.73-0.79, P < 0.001; age > 55 years old: OR = 1.92, 95% CI was 1.37-2.66, P < 0.001]. The prediction model was established by using the above risk factors and displayed by Nomogram. ROC curve analysis showed that the area under the ROC curve (AUC) of Nomogram model to predict the risk of death within 72 hours was 0.858, and the predictive ability of Nomogram model was significantly higher than that of Lac (AUC = 0.743), GCS score (AUC = 0.774) and ISS score (AUC = 0.699), all P < 0.05. The model calibration chart showed that the predicting probability was consistent with the actual occurrence probability, and the DCA showed that Nomogram model presented excellent clinical value in predicting the 72-hour death risk for polytrauma patients. Conclusions:The prognostic Nomogram model presents significantly predictive value for the risk of death within 72 hours in polytrauma patients. Prognostic Nomogram model could offer individualized, visualized and graphical prediction pattern, and provide physicians with practical diagnostic tool for triage system and management of polytrauma according to precision medicine.

Objective To analyze the effect of different retained dosage of lauromacrogol within the thyroid cyst in the sclerotherapy of thyroid cysts.Methods A total of 200 patients with thyroid cysts,who were admitted to the Longyan Municipal First Hospital of China between August 2020 and August 2021,were enrolled in this study.The patients were randomly and equally divided into group zero(suctioning out all the amount of the injected lauromacrogol),and,according to the percentage of the retained lauromacrogol dosage to the total cystic fluid,group 10%,group 20%,group 30%and group 50%,with 40 patients in each group.Thyroid color ultrasound was reviewed at 1,3,6,and 12 months after treatment.The changes of capsule volume,curative efficacy,influencing factors,and adverse reactions after the cyst became sclerosis were analyzed.Logistic regression analysis was used to analyze the factors affecting the postoperative efficacy.Results In all the 5 groups,the suctioned fluid was dark red in colour,and the patients had cystic nodules.The preoperative mean cyst volume was(20.43±5.86)cm3.In all the 5 groups,the postoperative changes in cyst volume indicated that the postoperative one-month cyst volume significantly shrank when compared with the preoperative volume,the postoperative 3-month cyst volume remarkably shrank when compared with the postoperative one-month volume,and the postoperative 6-month cyst volume strikingly shrank when compared with the postoperative 3-month volume(all P＜0.05),while no statistically significant difference in the cyst volume existed between the postoperative 12-month value and the postoperative 6-month value(P＞0.05).The postoperative 6-month total effective rate of all the five groups was 87%(174/200),and no statistically significant differences in the postoperative 6-month curative effect existed between each other among the 5 groups(P＞0.05).Taking the postoperative 6-month curative effect as the dependent variable,and the age,sex,thick cystic wall,cystic septum,and preoperative cyst volume as independent variables,the binary logistic regression analysis was conducted,which revealed that the thick cystic wall(OR=0.24,95%CI=0.08-0.72,P=0.01)and the cystic septum(OR=0.21,95%CI=0.07-0.67,P=0.01)were the factors affecting the postoperative 6-month curative effect.The main side reaction was pain,which was tolerable by patients.There was no significant difference in the incidence of adverse reactions between each other among the five groups(all P＞0.05).Conclusion In treating thyroid cysts by using ultrasound-guided lauromacrogol sclerotherapy,there is no relationship between the curative effect and the percentage of the retained lauromacrogol dosage to the total cystic fluid.The best curative effect can be achieved at 6 months after injection of lauromacrogol,which can be used as the optimal time for follow-up check.The thick cystic wall and the cystic septum are the main factors that affect the curative effect of lauromacrogol sclerotherapy.For the treatment of thyroid cyst,lauromacrogol sclerotherapy carries reliable curative effect with few adverse reactions,therefore,this therapy is worthy of clinical application.(J Intervent Radiol,2024,32:69-73)