2.Problems and difficulties of early warning and response system for public health emergencies in China
Liqun LIU ; Qi ZHAO ; Genming ZHAO ; Qingwu JIANG
Chinese Journal of Schistosomiasis Control 1989;0(03):-
Objective To study current situation and existed problems in the public health emergency alert and response system so as to formulate more advices to consummate it and help to establish a more reasonable system adapting to our country. Methods A qualitative study was carried out among CDC working staff including two focus group discussions(FGD). Results Although government had put more emphasis on public health,increasing its devotion and strengthening the alert and response capability after SARS outbreak, some problems still existed, such as ① absence of correlative laws and rules; ② lack of government devotion; ③ insufficient utilization of surveillance information; ④ lack of the canonical response guidance. Conclusions With regard to the building up of the public health emergency alert and response system, the following proposals are put forward: increasing payout on public health; consummating the construction of disease surveillance network; affording more education and training to correlative staff engaged in the disease control to improve their abilities.
3.Education characteristics and its inspirations of laboratory hematology in the specialty of medical laboratory in Curtin University in Australia
Baoxia ZHAO ; Xia QI ; Xiuxiang MENG ; Hui LIU ; Chunqing LIU
Chinese Journal of Medical Education Research 2016;15(12):1192-1195
By taking the course of laboratory hematology in Curtin University in Australia as an ex-ample, this paper introduced the characteristics of its teaching mode, teaching contents, teaching methods, assessment methods and laboratory practice. The advantages and disadvantages of education characteristics between Australia and China were compared and analyzed on the training methods and the training objec-tives, respectively. The education characteristics of laboratory hematology in Curtin University provided an important inspiration for our education reform in the field of medical laboratory in the future.
5.Study on green trade barriers of traditional Chinese medicine accessing international markets
Ping WU ; Xia ZHAO ; Qi LI ; Tonghua LIU
International Journal of Traditional Chinese Medicine 2012;34(11):964-967
With the increasing trade amount of herbal medicine over the world,many foreign countries took non-tariff barriers such as technical regulations,technical standard and conformity assessment procedures,of which the most far-reaching impact of green trade barriers on the export of traditional Chinese medicine.We analyzed the three green trade barriers faced by the traditional Chinese medicine assessing international markets,and summarized the impacts of green trade barriers on the export of traditional Chinese medicine from the two aspects of positive and negative.In the end of this study,we came up with some strategies to deal with green trade barriers:to promote the establishment of standard system; to ensure the quality of traditional Chinese medicine products; to implement green production; to cultivate environmental awareness; to pursue international certification; and to enhance corporate brand image.
6.Upregulation of brain APJ receptor expression induced by high salt in pressure overload rats
Qi ZHANG ; Yingying TAN ; Dongmin LIU ; Xiaoming ZHAO
Chinese Pharmacological Bulletin 2015;(5):630-635
Aim To observe the effect of high salt stress on sympathetic nerve activity and brain Apelin and APJ system in pressure overload rats.Methods The suprarenal abdominal aorta was banded in male SD rats to create the pressure overload model.Four weeks later,the rats were fed a high-salt (8%NaCl)diet or a regular-salt (0.3% NaCl)diet for 1 week,and the hemodynamic changes of the rats were recorded.Sym-pathetic activity was evaluated by measuring 24 h uri-nary norepinephrine (NE)by ELISA.Real-time RCR and Western blot method were used to analyze the Ape-lin and APJ expression in the paraventricular nucleus of rats.In another protocol,ML22 1 or benzamil was intracerebroventricularly infused in the aorta banding rats fed with high-salt,and levels of 24 h urinary NE and cardiac index were recorded.In addition,normal SD rats were intracerebroventricularly infused with Na+-rich aCSF for 1 week,and the changes of blood pressure,24 h urine-NE and APJ expression levels were detected.Results In the pressure overload rats fed with high salt diet for 1 week,the mean arterial blood pressure (MAP),heart rate (HR),left ventric-ular end systolic pressure (LVESP),24 h urinary NE and APJ mRNA protein expression in paraventricular nuclear were significantly increased compared with those in control groups (P<0.05 ).However,the he-modynamics,24 h urinary NE and APJ expression showed no significant change in the sham rats fed a high salt diet.In addition,ICV infusion of APJ recep-tor antagonist ML221 or the ENaC antagonist benzamil significantly inhibited the 24 h urinary NE level and HW/BW ratio in the pressure overload rats fed high salt diet (P <0.01 ).Intracerebroventricular infusion of high Na+aCSF for 1 week in normotensive rats also significantly increased the MAP,HR,urinary-NE lev-els and brain APJ expression (P <0.0 1 ).Conclu-sions High salt increases the sympathetic nerve activ-ity in rats with pressure overload model, which is closely related to the brain APJ receptor expression and Na+sensitivity.Brain APJ receptor may be an impor-tant target in the development of salt sensitivity.
7.Porcine anterior segment perfusion culture and trabecular meshwork organ culture
Qi ZHOU ; Yuqin LIU ; Jialiang ZHAO ; Hua ZHANG
Basic & Clinical Medicine 2006;0(06):-
Objective To verify the application of anterior segment perfusion culture and trabecular meshwork (TM) organ culture for glaucoma study. Methods TM tissue was cultured by perfused anterior segment and TM organ culture, light microscopy was used to observe the TM cells and intercellular spaces.Results IOP of the porcine anterior segments perfused under constant flow at 0.1 mL/h could bekept in normal range(10~12 mmHg). The IOP was elevated with the increasing of perfusion rate, while the morphology and structure of the tissue were well preserved. TM cultured by TM organ culture could also reserve the tissues well, but the intercelluar spaces collapsed. Conclusion Anterior segment perfusion model could be a short-term high-pressure model and may simulate the normal physical state. Adequate perfusion was necessary for normal TM.
8.Determinations of the bonding strength with pressure in the same direction for two enamel adhesion techniques:self-etching and all-etching
Qi ZHAO ; Shihua XUE ; Zhiyong LIU ; Lingyun WU
Journal of Peking University(Health Sciences) 2004;0(01):-
Objective: To compare the shear strength of the self-etching techniques and the all-etching techniques for enamel adhesion and to provide evidence for the selection of different bonding methods in clinical practice. Methods: Ten middle incisors recently extracted were collected,each was cut into two parts following its sagittal axis,thus divide each tooth into two groups.For group 1 Single BondTM 2 was used to bond FiltekTM Z250 resin to the teeth.For group 2,SE Bond was used to bond Filtek Z250 resin to the teeth.After that,according to the principle of pressing from the incisal margin to the cervix,the shear strength of each bonding unit was tested and statistically analyzed. Results: The shear strength of Single BondTM 2 was significantly higher than that of SE Bond(P
9.Research progress of tumor microenvironment heterogeneity
Yang XU ; Qi QIN ; Hong ZHAO ; Jianhong LIU
Practical Oncology Journal 2017;31(3):258-261
The tumor microenvironment plays a vital role in the process of tumorigenesis and development.Studies have been confirmed that the tumor microenvironment heterogeneity has a huge impact on the tumor efficacy and drug resistance.This review summarizes the relationship between immune cells and related immune factors in tumor microenvironment as well as vascular endothelial cell heterogeneity and tumor progression and prognosis.So it is better help us understand the tumor microenvironment heterogeneity for the impact of the tumor.This will conduce to us through a variety of methods to enhance the body's anti-tunor ability by inhibi-ting and killing tumor cells.
10.Expression of C-reactive protein in children with acute otitis media and its significance
Jin SU ; Pingping ZHAO ; Xin LIU ; Qi GONG
Chinese Journal of Primary Medicine and Pharmacy 2017;24(16):2524-2527
Objective To analyze the expression of C-reactive protein(CRP)in 2-12-year-old children with acute otitis media(AOM),we can use CRP as a strong evidence for the usage of antibiotics in the diagnosis and treatment of otitis media.Methods 250 children with AOM were selected as the research subjects.52 cases refused to test,CRP was detected in 198 children(231 ears).CRP was examined in all patients before treatment,they were followed up for 1 month.After treatment,CRP was reviewed in three days,one week and one month,respectively.Results In 198 children(231 ears),71 ears were recovered,33 ears improved,and 127 ears were ineffective in three days,the effective rate was 45.0%(104/231).100 ears were recovered,45 ears improved,and 86 ears were ineffective in one week,the effective rate was 62.8%(145/231).121 ears were recovered,56 ears improved,and 54 ears were ineffective in one month,the effective rate was 76.6%(177/231).The effective rate were significantly different among the three groops(x2=14.643、48.406,10.494,all P<0.05).Among 198 children,188 ears were in the low expression group,43 ears were in the high expression group.After three days of treatment,the composition ratio of group B and group C was changed(x2 =5.979,P=0.014),while group A had a significant change(x2 =13.948,P=0.000).Therefore,early use of antibiotics was effective in reducing CRP,so as to reduce the clinical symptoms in children.Conclusion CRP can be used to guide antibiotic monitoring.