1.Joinpoint regression analysis on the epidemiological trend of influenza in Nantong city, Jiangsu province in 2010 - 2022
Junfeng MIAO ; Ye WEI ; Chao BAO
Journal of Public Health and Preventive Medicine 2024;35(4):32-36
		                        		
		                        			
		                        			Objective	 To analyze the epidemiological characteristics of influenza in Nantong city, explore its changing trend, and provide evidence for effective prevention and control measures.   Methods	 The incidence data of influenza in Nantong city from 2010 to 2022 were collected and analyzed by descriptive statistical software. Joinpoint regression model was used to analyze the trend of influenza incidence.  Results	The annual reported incidence of influenza in Nantong city showed an exponential upward trend from 2010 to 2022 (APC=25.25, P=0.002). The annual reported incidence rate of males was higher than that of females, and the incidence trend of both showed an exponential upward trend(Male: APC=24.40, P=0.002; Female: APC=26.11, P=0.002). The seasonal index showed a unimodal distribution, with a peak from December to February of the next year, and the highest value was 2.78 in January. The average annual reported incidence in each age group showed a rapid upward trend from 0 to 7 years old (β1=16.13, P<0.001), a cliff decline from 7 to10 years old (β1=-44.50, P=0.037), and a low slow downward trend from 10 to 45 years old (β1=-0.20, P=0.001), and lower tailing was observed in 45-85 years group (β1=0.04, P=0.162).  Conclusion The overall incidence rate of influenza in Nantong City is on the rise. Children under 7 years old are the key protected population. We should control the key season, do a good job of publicity and education, encourage vaccination,and at the same time do a good job in pathogen monitoring, timely pay attention to the situation of epidemic strains, and scientific prevention and control.
		                        		
		                        		
		                        		
		                        	
2.Intervention Effect of Shenfu Injection on the Nuclear Translocation of HMGB 1 in LPS-induced RAW 264.7 Cells
Fei AI ; Xia LIU ; Hui LI ; Chunwei CHU ; Xiangyun CHEN ; Junfeng GUO ; Yi YANG ; Liyan MEI ; Jifei MIAO ; Quan WEN ; Sen YE
China Pharmacy 2020;31(21):2585-2591
		                        		
		                        			
		                        			OBJECTIVE:To investigate the intervention effect of Shenfu i njection(SFI)on the nuclear translocation of high mobility group box 1(HMGB1) in lipopolysaccharide (LPS)-induced RAW 264.7 cells. METHODS : Using LPS-induced RAW264.7 cells as objects ,the histone deacetylase inhibitor RGFP 966 as positive control ,CCK-8 assay was used to screen drug dosage,and the effects of low ,medium and high doses (3,6,12 μL/mL)of SFI on HMGB 1 nuclear translocation in RAW 264.7 cells were observed by immunofluorescence method ;mRNA expression of HMGB 1 in RAW 264.7 cells were detected by real time fluorescent PCR. Western blotting assay was used to determine protein expression of HMGB 1 and Toll-like receptor 4(TLR4);the expression of HMGB 1 were compared between nucleus and cytoplasm. The levels of HMGB 1,IL-1β and TNF-α in supernatant of cells were detected by ELISA. RESULTS :In blank control group ,HMGB1 was mainly located in the nucleus ;after LPS induction, HMGB1 migrated from nucleus to cytoplasm.  Compared with blank control group , mRNA and protein (No.81760738) expression of HMGB 1, protein expression of TLR 4 in  RAW264.7 cells as well as the levels of HMGB 1,IL-1β and TNF-α in supernatant of cells were increased significantly in LPS group (P<0.01). The protein expression of HMGB 1 was decreased significantly in nucleus while was in creased significantly in cytoplasm (P<0.01). After SFI treatment ,the nuclear translocation and secretion of HMGB 1 were inhibited in different degrees ;compared with LPS group ,mRNA and protein expression of HMGB 1 in administration groups ,protein expression of TLR 4 in RAW 264.7 cells of positive control group ,SFI medium- and high-dose groups as well as the levels of HMGB 1,IL-1β and TNF-α in supernatant of cells in administration groups were decreased significantly (P<0.01). In positive control group ,SFI medium- and high-dose groups ,the protein expressions of HMGB1 in nucleus were increased significantly ,while protein expressions of HMGB 1 in cytoplasm were decreased significantly (P<0.01). CONCLUSIONS :SFI may inhibit the nuclear translocation and secretion of HMGB 1 in RAW 264.7 cells,thus avoiding the activation of inflammatory pathways and the production of inflammatory factors ,so as to reduce the inflammatory response induced by LPS.
		                        		
		                        		
		                        		
		                        	
3.Improvement and Anti-inflammation Mechanism of Shenfu Injection on Lung Tissue in Endotoxin Shock Model Rats
Xia LIU ; Fei AI ; Chunwei CHU ; Xiangyun CHEN ; Junfeng GUO ; Yi YANG ; Liyan MEI ; Jifei MIAO ; Quan WEN ; Sen YE ; Hui LI
China Pharmacy 2019;30(11):1492-1497
		                        		
		                        			
		                        			OBJECTIVE: To study the improvement and anti-inflammation mechanism of Shenfu injection on lung tissue of endotoxin shock model rats. METHODS: Totally 48 rats were randomized into control group,model group,dexamethasone group (positive control,1 mg/kg) and Shenfu injection low-dose,medium-dose and high-dose groups (5,10,15 mL/kg),with 8 rats in each group. Except for normal group, other groups were given intraperitoneal injection of lipopolysaccharide (LPS) to induce endotoxin shock model. After modeling, each group was given relevant medicine once intraperitoneally. 24 h after medication, HE staining was used to observe pathological changes of lung tissue in rats and pathological scoring was conducted. RT-PCR was used to determine mRNA levels of P65 and P50 proteins related to NF-κB signaling pathway. Western blot assay was used to determine the expression levels of P65 and P50 proteins in lung tissue, and the expression levels of P65 protein in nucleus and cytoplasm of lung tissue were also determined. The level of TNF-α in plasma in rats were determined by ELISA. RESULTS: Compared with control group, alveolar septum became thicker, obvious vascular engorgement was found, and a large number of neutrophils infiltrated the interstitium in model group. Histopathological score, mRNA and protein expression levels of P65 and P50 in lung tissues were increased significantly (P<0.01 or P<0.001); the protein expression of levels P65 in nucleus and cytoplasm and level of TNF-α in plasma were increased significantly (P<0.001). Compared with model group, alveolar structure of rats in dexamethasone group and Shenfu injection medium-dose and high-dose groups was complete, no obvious bleeding was observed, and the degree of inflammatory cell infiltration was improved significantly. Histopathological score, mRNA and protein expression levels of P65 and P50 in lung tissue and level of TNF-α in plasma were decreased significantly (P<0.05 or P<0.01 or P<0.001). The protein expression level of P65 in nucleus and cytoplasm of lung tissue were decreased significantly in dexamethasone group and Shenfu injection low-dose and medium-dose groups were decreased significantly (P<0.05 or P<0.01 or P<0.001). CONCLUSIONS: Shenfu injection can decrease mRNA and protein expression levels of P65 and P50 in lung tissue, level of TNF-α in plasma, and protect lung tissue of endotoxin shock rats.
		                        		
		                        		
		                        		
		                        	
4.Design and Implementation of Digitalized Information Resources Platform for Mongolian Medicine
Jinniu BAI ; Ning MA ; Jingxia GUO ; Yue MIAO ; Junfeng XING
Journal of Medical Informatics 2016;37(6):48-52
		                        		
		                        			
		                        			The paper designs and implements a digitalized information resources platform for Mongolian medicine based on ASP.NET.The system adopts VS2008 + SQL SERVER2005 and the 3-tier architectural pattern,integrates functional modules such as News Information,Mongolian Medicine,Mongolian Doctors and Q&A,realizes the digitalization of Mongolian medicine resources and establishes a sharing system.Upon testing,the system operates well and achieves the expectations.
		                        		
		                        		
		                        		
		                        	
5.Correlation between image quality and radiation dose on screening mammography
Ying MIAO ; Junfeng SONG ; Weifei CHEN ; Bailin WANG ; Xuwen XIANG ; Cong CAI ; Liqing ANG
Chinese Journal of Radiological Medicine and Protection 2011;31(5):606-609
		                        		
		                        			
		                        			Objective To obtain the matched parameters between image quality and radiation dose by exploring the influence of the exposure parameters of screening mammography on both the image quality and radiation dose.Methods The correlation between the exposure parameters and average glandular doses to 507 patients undergoing screening mammography were retrospectively analyzed.The influence of breast compression thickness on radiation dose by exposing different thickness of PMMA was obtained.The correlation with image quality was analyzed by combined testing of contrast detail test mode ( CDMAM3.4 )and different thickness of PMMAs.Results The groups aged 30 to 49 years were the main groups in 507examined patients,up to 67.06% of the total.The mean value of average gland doses ( AGD ) in contrastprior mode was the highest in three kinds of exposure modes,accounting for 137.5% of standard mode.In standard mode,target material/filtration board combination was Mo/Mo,Mo/Rh and Rh/Rh,accounting for 1/3 respectively.Mo/Rh and Rh/Rh were selected in dose-prior mode,accounting for 50% respectively.Mo/Mo was mainly selected in contrast-prior,accounting for 52%.Breast compression thickness was positively correlated with average gland doses.Image quality figure inverse (IQFinv) under three kinds of modes (STD,DOSE,CNT) was 98.32,95.41 and 107.02,respectively,and IQFinv of contrast-prior mode was the highest among them.IQFinv was in general agreement in the three kinds of exposure modes when the thickness of PMMA plates plates was greater than or equal to 5 cm.Conclusions In clinical practice,when the breast is of density type and pressed thickness is less than 4 em,the dose-prior mode should be selected.When the pressed thickness is between 4 and 6 cm,the standard exposure mode should be selected.When the pressed thickness is larger than 6 cm,the manual mode should be selected.
		                        		
		                        		
		                        		
		                        	
6.Transfection of GFP gene in rat C6 glioma cells enhanced by ultrasound-mediated microbubble destruction
Changjun WU ; Junfeng WANG ; Qianyi QIU ; Miao ZHENG
Chinese Journal of Ultrasonography 2010;19(5):443-445
		                        		
		                        			
		                        			Objective To determine whether ultrasound (US) exposure combined with microbubble destruction could be used to enhance non-viral gene delivery in rat C6 glioma cells. Methods Microbubbles were prepared and gently mixed with plasmid DNA. The mixture of the DNA and microbubbles was administered to cultured C6 cells under different US/microbubble conditions. US parameters adopted in this study were frequency 1 MHz, output intensity 1 W/cm2, duty cycle 20%, exposure time 30 seconds. Transfection efficiency and cell viability were assessed by FACS analysis, confocal laser scanning microscopy, and Try pan blue staining. Results Microbubble with US exposure could significantly enhance the reporter gene expression as compared with other groups. No statistical significant difference was observed in the glioma cell viability between different groups. Conclusions US-mediated microbubble destruction has the potential to promote safe and efficient gene transfer into C6 cells,and it may be useful for safe clinical gene therapy of brain cancer without a viral vector system.
		                        		
		                        		
		                        		
		                        	
            

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