3.Alterations of after depolarization and triggered activity in myocardiac muscle during progression of mouse aortic stenosis.
Hong JIAO ; Yong ZHANG ; Xiao-Ling WANG
Chinese Journal of Applied Physiology 2014;30(3):243-246
OBJECTIVETo explore the alterations of after depolarization and triggered activity in myocardiac muscle during progression of mouse aortic stenosis.
METHODSAfter the establishment of mouse aortic stenosis model, the heart was collected and intracellular potential was recorded using standard glass microelectrode. After the recording, the action potential (AP), early after depolarization (EAD), delayed after depolarization (DAD) in papillary muscles were analysed.
RESULTS(1) Compared with that of time-matched control mice, there were no changes of the action potoutial duration at 90% repolarization(APD90) in model mice at 2 and 5 weeks, whereas the APD90 was progressively prolonged at 9 and 13 weeks. (2) During the 30 minites of the experiment, spontaneous EADs and DADs were frequently present in medel mice at 9 and 13 weeks, were not in control and model mice at 2 and 5 weeks. (3) Compared with those of control group, EADs and DADs triggered by hypokalaemia or isoproterenol were increased significantly. The incidence rate of triggering EADs and DADs was progressively increased over time.
CONCLUSIONEAD, DAD and trigger activities increase gradually during the process of aortic stenosis, and it suggests that the myocardium electrical-instability is markedly increased in the insult hearts.
Action Potentials ; physiology ; Animals ; Aortic Valve Stenosis ; physiopathology ; Disease Models, Animal ; Male ; Mice ; Myocytes, Cardiac ; physiology
4.The dynamic alterations of electrocardiogram during progression of mouse cardiac hypertrophy.
Hong JIAO ; Yong ZHANG ; Xiao-Ling WANG
Chinese Journal of Applied Physiology 2014;30(2):168-171
OBJECTIVETo find the characteristic parameters from electrocardiogram (ECG) which is most related to pathological progress, surface ECG was performed in mice at 2, 5, 9 and 13 week post surgery.
METHODSElectrocardiogram recordings: The mice were anaesthetized with tribromoethanol (250 mg/kg, i.p.). Lead II surface ECG were acquired by using the Biopac System MP150 at a rate of 5 kHz.
RESULTS(1) No arrhythmia was observed in Sham and 2-week Band mice. Spontaneous arrhythmias were observed in ECG recordings, with an incidence of 15%, 28% and 63% in 5-, 9- and 13-week Band mice, respectively. Tachyarrhythmias, such as frequent premature ventricular extrasystole, bigeminy, trigeminy, and paroxysmal tachycardia were found. (2) Analysis of ECG recordings revealed a significant prolongation of QT and QTc intervals. Compared with age-matched Sham mice, the increment in QT and QTc intervals was 20.4%, 32.7%, 49.7%, 61.0% and 27.1%, 32.1%, 43.9%, 59.1% at 2, 5, 9 and 13 week, respectively (P < 0.01). (3) The characteristic change in electrocardiogram was on the J wave. The amplitude of J wave was upward in Sham mice, and it was significantly flattened or inverted in Band mice. (4) Except that RR interval at 2 week showed a slight decrease, there was no significant change in PR interval and RR interval in Band mice.
CONCLUSIONIn the present study, we found that the increase incidence of spontaneous arrhythmias, prologation of QT interval and changes in the amplitude of the J wave in the surface ECG during progression of mouse cardiac hypertrophy and failure, and the progressive pattern indicated that a gradual aggravation of the ventricular repolarization delay in this mouse model.
Animals ; Cardiomegaly ; physiopathology ; Disease Models, Animal ; Electrocardiography ; Male ; Mice
5.Cultivation strategy and path analysis on big brand Chinese medicine for small and medium-sized enterprises.
China Journal of Chinese Materia Medica 2014;39(5):755-758
Small and medium-sized enterprises (SMEs) are important components in Chinese medicine industry. However, the lack of big brand is becoming an urgent problem which is critical to the survival of SMEs. This article discusses the concept and traits of Chinese medicine of big brand, from clinical, scientific and market value three aspects. Guided by market value, highlighting clinical value, aiming at the scientific value improvement of big brand cultivation, we put forward the key points in cultivation, aiming at obtaining branded Chinese medicine with widely recognized efficacy, good quality control system and mechanism well explained and meanwhile which can bring innovation improvement to theory of Chinese medicine. According to the characters of SMEs, we hold a view that to build multidisciplinary research union could be considered as basic path, and then, from top-level design, skill upgrading and application three stages to probe the implementation strategy.
China
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Drug Industry
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economics
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standards
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trends
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Drugs, Chinese Herbal
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economics
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standards
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Medicine, Chinese Traditional
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economics
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standards
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trends
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Plants, Medicinal
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growth & development
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Quality Control
6.An exploration of a new mode of nursing teaching ward round jointly organized by the school and hospital
Manying ZHOU ; Hong WANG ; Yong LIN
Journal of Medical Postgraduates 2003;0(06):-
Objective:To explore a new way of nursing teaching round-making compatible with the nursing students at junior college,and to establish and improve the standards for its assessment.Methods:We performed a new mode of nursing teaching ward round jointly organized by nursing teachers of the school and clinical supervisors of the hospital among student nurses of Grade 2006 on four different subjects respectively,by going through the following four steps: establishing the subject,working out the plan,making the ward round and assessing the quality.Results:The average score on the quality assessment of the four subjects by teachers and students was 93.78.Conclusion:The new mode of nursing teaching ward round jointly organized by the school and hospital can make the best of nursing faculty resources,give full play to nursing students'potential and optimize this activity and facilitate the teaching of clinical nursing.
7.Professional competence-oriented integral nursing training:An effective training mode for student nurses
Hong WANG ; Manying ZHOU ; Yong LIN
Journal of Medical Postgraduates 2003;0(06):-
Objective: To explore an integral training mode for student nurses in large modern general hospitals.Methods: Integral nursing training was conducted in our hospital among 610 student nurses from universities and postsecondary specialized colleges.Results: All the student nurses considered the integral training to be helpful for the promotion of their professional nursing competence.Conclusion: The professional competence-oriented integral nursing training can optimize the teaching quality of clinical nursing and help enhance the professional competence and comprehensive qualities of student nurses.
8.The effect of propofol and ketamine on the Ultrapuunonary shunting during one-lung ventilation in dogs
Hong MA ; Yong GUI ; Junke WANG
Chinese Journal of Anesthesiology 1995;0(10):-
0.05). Qs / Qt was significantly higher at 2 min of OLV than that during TLV in both groups ( P 0.05) . The difference in Qs / Qt at 10 min, 30 min and 60 min of OLV between the two groups was statistically significant ( P
9.The effects of Tianqijiangtang capsule combined with Metformin on the levels of interleukin-6,tumor necrosis factorαand C-reactive protein in patients with type 2 diabetes mellitus
Yong CAO ; Hong-yu WANG ; Chun XU
Chinese Journal of Diabetes 2015;(8):739-741
Objective To explore the effects of Tianqijiangtang capsule combined with Metformin on the levels of IL‐6 ,TNF‐α and C‐RP protein in patients with T2DM. Methods 80 T2DM were randomized into control group (treatment with Metformin ,n= 40) and treatment group (treatment with Tianqijiangtang in combination with Metformin ,n=40). The changes of levels of IL‐6 ,TNF‐α and C‐RP were observed before and after the treatment. Results Compared to the pretreatment in the same group and after treatment in control group ,IL‐6 ,TNF‐αand C‐RP of treatment group were reduced significantly [(6.79 ± 0.60) ,(7.15 ± 0.62) vs (5.08 ± 0.43)pg/ml;(8.94 ± 0.55) ,(8.61 ± 0.66) vs (5.18 ± 0.45) pg/ml;(6.79 ± 0.60) ,(6.58 ± 0.59) vs (5.56 ± 0.30) mg/L ,P<0.01]. Conclusion Tianqijiangtang capsule combined with Metformin can decrease the levels of IL‐6 ,TNF‐αand C‐RP in T2DM patients.