1.The investigation of pathologic oxygen supply dependency.
Chinese Journal of Pediatrics 2003;41(2):152-154
5.Safety of bronchoalveolar lavage in patients with severe asthma undergoing invasive mechanical ventilation
Xun FAN ; Xiaoqv CHENG ; Weidong ZHANG
Chinese Journal of Postgraduates of Medicine 2006;0(01):-
0.05),and all were improved after operations (P
6.Evaluation of nitrative stress on retinal capillary by detection of trans-arachidonic acid with GC/MS in diabetic rats
Lin, XU ; Guo-liang, XUN ; Zhujun, YAO ; Yu-min, LIU ; Ying, FAN ; Tao, SUN ; Xun, XU
Chinese Journal of Experimental Ophthalmology 2011;29(5):432-436
Background Trans-arachidonic acids (TAAs) are specific lipid markers of nitrative stress and the major products of NO2·-mediated ismoerization of aracchidonic acid(AA),and they represent a possible new mechanism of NO2·-induced toxicity in ischemic retinopathy.Our previous study demonstrated that high glucose induce nitrative stress response. Objective This study aimed to evaluate the effect of nitrative stress on retinal capillary in diabetic rats by detecting the TAAs with gas chromatography and mass spectrometry(GC/MS).Methods One hundred 2-week-old clean male SD rats were randomly divided into control group and diabetic group.Diabetic rat models were induced by intraperitoneal injection of streptozoticin of 60 mg/kg,and the successful models were identified as the blood glucose level>16.7 mmol/L.The synthesis method was modified in this study andaraehidonic acid w8$utilized as starting material.14E-AA was obtained as a standard sample via expoxidation and deoxidation in a safe and practical pattern.Serum TAAs and AA in diabetic rats were detected by GC/MS in 2,4,8,12 and 16 weeks after injection of streptozoticin.The ratio of peak area of TAAs to AA with selected ion of 79 was estimated and compared with normal rats. Results Fifty rats had been in Diabetic models were established in 50 rats with the successful rate 100%,and the high blood glucose level in model rats retained throughout the experimental duration.GC/MS results showed that the 14E-AA was obtained with the purity of 97.3%,which provided a standard sample to nitrative stress-related research as a premise. No significant differences were found in serum TAAs/AA values at 2 weeks and 4 weeks between model group and control group (t =-0. 376, t =-0. 642,P>0. 05). However,serum TAAs/AA values in at 8,12 and 16 weeks after streptozoticin injection were considerably elevated in comparison with those of control group (0. 0832 vs 0. 1042,0. 0910 vs 0. 1568, 0. 1100 vs 0. 1895;t=-36.409,t=-166.714,t=-148.212,P<0. 05). Conclusion Elevation of serum TAAs/AA is associated with diabetic duration,implying that damage of nitrative stress to retinal capillary is a parallel procedure to diabetic course.Establishment of GC/MS detection system offers a new evaluating indicator in the research on microvascular ischemic disease and could be implemented in clinical testing.
7.Clinical application of intraoperative epicardial echocardiography in cardiac valve surgery
Ruixia TIAN ; Xuegong SHI ; Xun CHEN ; Leilei FAN ; Chaolong JIN
Chinese Journal of Ultrasonography 2012;(7):581-582
Objective To evaluate the clinical value of epicardial echocardiographic examination in cardiac valve surgery.Methods Epicardial echocardiography were performed in 46 patients undergoing valvular plasty or valvular replacement surgery to estimate the function of valve and left ventricle and residual shunt during cardiac surgery.Results Twelve cases of 46(26.1%)showed abnormality during cardiac surgery.Two cases of 15 patients performed valvuloplasty were changed to valvular replacement because of remarkable regurgitation of native valves.There was 1 case of periprosthetic leakage,3 cases of left atrial appendage thrombus,1 case of patent foramen ovale and 5 cases of low ejection of left ventricle in all 31 cases of valvular replacement.Conclusions Epicardial echocardiograpyc examination is an effective examination in cardiac valve surgery with clearly image,simplicity operation and promptness.
8.An investigation on knowledge of control and prevention for chronic obstructive pulmonary diseases among general practitioner in community health service centers
Fan LI ; Yingyun CAI ; Xun XU ; Xuemin ZHANG ; Weiwen YIN
Chinese Journal of General Practitioners 2009;8(2):104-107
Objective To understand awareness of basic knowledge on control and prevention for chronic obstructive pulmonary disease (COPD) among general practitioner in community health service centers. Methods Questionnaire survey was conducted among 593 general practitioners at 15 community health service centers in a district of Shanghai in the morning of February 26, 2008. Results Five hundred and forty-two of 593 ( 91.4% ) general practitioners surveyed knew that chronic obstructive pulmonary disease can be abbreviated as COPD, and 315 of them (53.1%) thought they knew the main contents of the "Guidelines for Prevention and Control of Chronic Obstructive Pulmonary Disease". No pulmonary function instrument was equipped at all 15 community health service centers surveyed, and 501 of 593 ( 84.5% ) general practitioners knew spirometry is gold standard for diagnosis of COPD. Only 115 ( 19.4% ) general practitioners knew that COPD can be categorized as acute exacerbation and stable stage. One hundred and sixty-three of them (27.5%) knew that drug therapy should be maintained in COPD patients for long term following effective treatment, 328 (55.3%) recognized that treatment for COPD patients was still needed in their stable stage, and 312 (52.6%) believed that antibiotics may not be necessary and 465 (78.4%) thought that inhalation therapy was the choice of treatment for acute exacerbation of COPD. Two hundred and thirty-five of them (39.6%) knew that oxygen inhalation should be more than 15 hours per day in regular family therapy. The investigation showed that 365 (61.6%) general practitioners had participated in training for COPD-related knowledge, only one or two times a year. Awareness of COPD knowledge was significantly poorer in rural practitioners than that in urban community ones. Conclusions Basic knowledge of prevention and treatment for COPD was seriously lack in general practitioners, so it is a necessity to strengthen training for them.
9.Simultaneous Quantitative Analysis of Contents of Salidroside, Loganin and Polydatin in Buxin Ruanmai Granules by Multi-Components Assay with Single Marker
Xun WANG ; Ling FAN ; Chao LU ; Zhihui LIU
Chinese Journal of Information on Traditional Chinese Medicine 2014;(9):93-97
Objective To develop a method of quantitative analysis of multi-components with single marker (QAMS) for simultaneous determination of Salidroside, Loganin and Polydatin;To validate its accuracy and feasibility in Buxin Ruanmai Granules.Methods Salidroside was used as the internal reference substance, and the content of Salidroside in Buxin Ruanmai granules was determined by external standard method, with a purpose to establish its relative correction factor with Loganin and Polydatin. The contents of Loganin and Polydatin were calculated by the relative correction factor, and then multi-components assay with single marker was realized. The three contents in Buxin Ruanmai Granules were determined by both QAMS and external standard method, and their results were also compared.Results The results of 10 batches of samples by two methods did not show significant difference, which showed that relative correction factors had good reproducibility and credits.Conclusion The QAMS method can be used to quality evaluation with multiple indicators of Buxin Ruanmai Granules.
10.Evaluation of the effect of music given to pregnant rats on the development of brain functions in offspring rats
Yao FAN ; Guoqiang PAN ; Xun LEI ; Jia GAO ; Yi TAN
Acta Laboratorium Animalis Scientia Sinica 2017;25(2):190-193,206
Objectives To systematically evaluate the effect of music given to pregnant rats on the development of brain functions in the offspring rats and to provide scientific evidence for the application of antenatal musical training and the promotion of welfare for laboratory animals.Methods We comprehensively retrieved and collected the research literatures related to the effect of music on brain function development in offsprings of the pregnant rats from Pubmed,Web of Science,Cochrane Library,Wanfang,Weipu,CNKI and CBMdisc.The retrieval time was set from the foundation date of databases to 2 April,2016.We selected literatures according to the inclusion and exclusion criteria,evaluated their utilities,then extracted and qualitatively described the data.Results Seven experimental studies were selected in this study including 4 published in Chinese and 3 in English.The object laboratory animals of those studies were Wistar or SD rats.Music materials involved comfort music,classic music,violin concerto(Liangzhu/The butterfly lovers).Intervention were given to the pregnant rats roundly from the gestation until parturition.These results showed that,to some extent,music stimulations during gestation may promote the development of brain function and improve spatial memory of the offspring rats.However,expressions of some functional receptors were not significantly altered.Conclusions Appropriate music provided to the pregnant rats promote the development of brain functions in their offspring.