1.Comparison of the effects of dexmedetomidine with midazolam on the respiration and circulation of mechanically ventilated patients
Liang LUO ; Mian ZENG ; Kaipan GUAN
Chinese Journal of Emergency Medicine 2012;21(3):295-298
Objective To compare the effects of dexmedetomidine on the respiration and circulation with midazolam in mechanically ventilated patients.Methods A total of 62 patients supported with mechanical ventilation in medical intensive care unit were randomly (random number) divided into two groups:midazolam group ( group A,n =38 ) and dexmedetomidine group ( B group,n =24).The patients in group A were intravenously administered with midazolam in bolus dose of 0.05 mg/kg given over 30 - 60 s,and then maintained with 0.05 -0.15 mg/(kg ·h) by venous pump.The patients in group B were intravenously administered dexmedetomidine in bolus dose of 1.0 μg/kg given in more than 10 min,and then maintained with 0.2 - 0.7 μg/( kg · h) by venous pump.When the patients' sedation degree were required to reach Ⅲ - Ⅳ Ramsay Grade,the heart rate,mean arterial pressure,respiratory rate and SpO2 before sedation were compared with those 10 min,30 min and 2 hours after sedation between two groups.Results Respiratory rate or heart rate after sedation significantly decreased compared with those of presedation ( P < 0.05 ).Blood pressure after sedation did not decrease significantly compared with that of presedation in Dexmedetomidine group.In midazolam group,blood pressure was (83.11 ± 12.95 ) mm Hg before sedation,and there was a significant decrease to (74.13 + 12.50) mm Hg in 10 min after sedation (P < 0.05 ),while there were no significant difference between ( 80.53 + 12.93 ) mm Hg 30 min after sedaton and (82.47 ± 12. 15 ) mm Hg 2 hours after sedation.Conclusions There is no difference in effects on respiration of mechanically ventilated patients between dexmedetomidine and midazolam,and the effect of dexmedetomidine on circulation was less than that of midazolam.
2.Effects of Environmental Tobacco Smoke on Serum Lipid and the Lipases of Serum and Liver and Lung in Rats
Ming ZENG ; Ting HUANG ; Lan GUAN
Journal of Environment and Health 1992;0(04):-
0.05).The smoking group had a higher TG level and a lower HDL-C level than the control one with statistical significance(P0.05).The HL activities in serum,lung and liver of smoking group were lower than those of control group(P
3.The Development of Ion Beam Bioengineering by Literature Analysis in China
Tao YAN ; Xian-Xian ZENG ; Guan LI ;
China Biotechnology 2006;0(04):-
The ion beam bioengineering study articles for 1994 -2003 years were retrieved, the research material and the level of the research, magazine, the ion source and the fund source were analysed and counted. The results indicate that the ion beam bioengineering of China get a fast development under the support of the nation and the local government and college. The development in the field of microbe is the fastest. in 21st century, the local government and colleges gradually enlarge the support of the ion beam bioengineering, some articles are under the support of enterprise researcher and fund. The contents of these articles mainly about application study. After analysing the data, the future of ion beam bioengineering of China was forecasted.
4.Effects of gefitinib combined with DC-CIK on advanced lung adenocarcinoma
Zuowei HU ; Xia ZHAO ; Jiangfeng GUAN ; Wenling SONG ; Hui ZENG
Journal of Chinese Physician 2016;18(1):56-59,62
Objective To investigate the short-term efficacy and safety of gefitinib combined with dendritic cells-cytokine induced killer (DC-CIK) cells in the treatment of advanced lung adenocarcinoma.Methods Fifty patients with lung adenocarcinoma who in previous had underwent radiotherapy and first-line chemotherapy failure received DC-CIK in combination with gefitinib treatment,blood count changes,imaging data,carcinoembryonic antigen and changes in the quality of life before and after treatment were compared and evaluated.Results DC-CIK could improve effectively and relieve bone marrow suppression response after chemotherapy and significantly increase the WBC content of blood (P < 0.01).After treatment,the tumor carcinoembryonic antigen (CEA) was significantly lower in patients (P < 0.01).Fifty cases of patients in complete remission (CR) were 0 cases,partial remission (PR) were 24 cases,stable disease (SD) were 17 cases and progression (PD) were 9 cases,and the response rates (RR) were 48%;The quality of life of patients was significantly improved (P < 0.05).Common adverse reactions were rash,diarrhea,chill and fever,but mild symptoms could be relieved after symptomatic treatment.Conclusions Gefitinib with autologous DC-CIK cell infusion second-line treatment of advanced lung cancer have a certain short-term efficacy,without significant adverse reactions.Gefitinib with autologous DC-CIK cell therapy can mitigate the response of bone marrow suppression in patients with advanced lung cancer and improve the quality of life of patients.Long-term effect remains to be investigated.
5.Comparison of propofol versus isoflurane for myocardial protection in patients undergoing coronary artery bypass grafting: a meta-analysis
Yugen GUAN ; Zeng LI ; Yajun ZHANG ; Yan CAI ; Yanfang ZHAO
Chinese Journal of Anesthesiology 2013;33(7):835-839
Objective To systematically compare propofol and isoflurane for myocardial protection in patients undergoing coronary artery bypass grafting (CABG).Methods Electronic databases were searched for randomized controlled clinical trials comparing propofol and isoflurane for myocardial protection in patients undergoing CABG.Data which were extracted independently by two reviewers included the general data of patients,premedication,induction of anesthesia and anesthetics applied during maintenance of anesthesia,level of cardiac troponin I (cTnI) before operation and at 6,12,24 and 48 h after operation,requirement for positive inotropic agents during operation,and development of myocardial infarction within 24 h after operation.Meta-analysis was conducted using Review Manager 5.0.2.Results Sixteen randomized controlled clinical trials involving 794 patients were included in this meta-analysis.The patients were divided into 2 groups:propofol group (n =405) and isoflurane group (n =389).There were no significant differences between the two groups in the plasma concentration of cTnI after operation,incidence of myocardial infarction within 24 h after operation,and requirement for positive inotropic agents during operation (P > 0.05).Conclusion There is no significant difference between propofol and isoflurane for myocardial protection in the patients undergoing CABG.
6.Cluster analysis of cystic echinococcosis in Non Tibetan Plateau regions
Xiangman ZENG ; Liying WANG ; Weiping WU ; Yayi GUAN ; Qi FANG
Chinese Journal of Schistosomiasis Control 2014;(2):180-183
Objective To understand the endemic characteristics and regularity of cystic echinococcosis by evaluating and classifying its endemic situation in Non Tibetan Plateau regions,so as to provide the evidence for formulating effective preventive and control measures. Methods The prevalence data of cystic echinococcosis in 174 counties(cities,districts,banners)in Non Tibetan Plateau regions from a national survey were collected and analyzed by the sample cluster method in 2012. Results The 174 counties(cities,districts,banners)could be classified into 4 clusters by spatial distribution. The first cluster with human high prevalence rate,low infection rate of livestock,and positive rate of dog stool antigen included 3 counties. The second cluster with high infection rate of livestock,low prevalence rate of human,and positive rate of dog stool antigen included 20 counties(cit-ies). The third cluster with high positive rate of dog stool antigen,low prevalence rate of human,and low infection rate of livestock included 39 counties(cities,districts,banners). The fourth cluster with low rates of the above 3 indices included the rest 112 counties. Conclusions The results of the cluster analysis conform to the current epidemiological status of cystic echinococcosis in the Non Tibetan Plateau regions. The epidemiological characteristics and geographical distributions of the four area types will pro-vide a basis for the classified management and guidance of cystic echinococcosis control in these areas.
7.Research on the basic theory training curriculum of residents
Shixian GU ; Guan WANG ; Aijing ZHANG ; Hui ZENG
Chinese Journal of Hospital Administration 2013;29(7):544-547
Objective To investigate how build a comprehensive basic theory training curriculum for residents.Methods Random questionnaire survey of residents,along with a forum of experts to explore an optimal basic theory training curriculum for residents.Results 71.9% of the residents surveyed were satisfied with the basic theory training curriculum,14.9% proposing training time be adjusted to evenings or weekends,and 8.8% proposing to adjust the training content.Conclusion A diversified reform on the training content,training time,training teachers,management and teaching evaluation aspects.These will help building a comprehensive and practical,standardized and reasonable basic theory curriculum,in order to effectively improve the quality of residency training.
8.Prevention of complications following cerebrovascular stent implantation
Changlun GUAN ; Guoxian SHI ; Qin LI ; Yongmei LUO ; Youchao ZENG
Chinese Journal of Tissue Engineering Research 2010;14(9):1681-1684
OBJECTIVE:To explore the reasons,occurrence mechanisms,as well as prevention methods for complications following cerebrovascular stent implantation.METHODS:A computer-based online search was performed by the first author.The databases of Medline and CNKI were searched with year's limitation of 1989-2009.According to the inclusive and exclusive criteria,the documents were screened,collected and evaluated from the following aspects:treating progress of cerebrovascular stent implantation;category and biocompatibility of cerebrovascular stent;as well as occurrence and prevention methods for complication following cerebrovascular stent implantation.RESULTS:A series of complications,such as carotid sinus response,hyper-perfusion syndrome,cerebral anglo spasm,bleeding at puncture locus,thrombosis,restenosis,as well as cerebral ischemia,would occur following cerebrovascular stent implantation.The complications were difficult to eliminate,but should be avoided by selecting correct implanting cases,elevating operator's proficiency,enhancing understanding of complications,obeying perioperative management,as well as correctly and in-time treatment.Polymer stent,coating stent,and drug eluting stent presented superior biocompatibility to metal stent,which could prevent restenosis following implantation.CONCLUSION:Cerebrovascular stent implantation is one of the main treatments for cerebrovascular disease.Polymer stent,coating stent,and drug eluting stent exhibit excellent biocompatibility.The complications associate to stent implantation are preventable and remediable via sufficient preoperatively preparation,exactly operation and perioperative management.
10.Effect of cell transplantation for the treatment of acute myocardial infarction using vascular endothelial growth factor gene transferred neonatal cardiomyocytes
Mingjian LANG ; Qiutang ZENG ; Siyu GUAN ; Bo CHEN
Chinese Journal of Pathophysiology 1999;0(09):-
AIM:To observe the secretion of vascular endothelial growth factor(VEGF)when adenovirus induced VEGF165(AdVEGF165)gene transferred into neonatal cardiomyocytes in vitro,and to investigate the impact on heart function after transplanted the transferred cardiomyocytes into infarct myocardium in rats.METHODS:Neonatal cardiomyocytes were cultured in vitro and labeled with BrdU,then transferred by AdVEGF 165.ELISA was applied to assay the expression and secretion of VEGF.Wistar rats,in which left descending branch of coronary artery was ligated,were randomly divided into four groups and transplanted into MI area with transferred cardiomyocytes(group Ⅰ),untransferred cardiomyocytes(group Ⅱ),AdVEGF 165(group Ⅲ)and culture medium(group Ⅳ),respectively.The echocardiograph was applied to evaluate the heart function before and after cell transplantation.Then the rats were executed and the hearts were harvested for histological(hematoxylin-eosin)and immunohistological(anti-BrdU dyeing)examinations.The vessels were also counted in injected area.RESULTS:ELISA indicated that the expression and secretion of VEGF in groupⅠwere higher than those in the rest(P