1.Determination of Cinnamaldehyde and Hesperidin in Siweiqing Buccal Tablets by High Performance Liquid Chromatography
Herald of Medicine 2014;(12):1627-1630
Objective To establish a method for the determination of hesPeridin and cinnamaldehyde in siweiqing buccal tablets. Methods A high Performance liquid chromatograPhy ( HPLC) method was established. The chromatograPhic conditions were as follows: the chromatograPhic column Inertsil ODS_SP ( 4. 6 mmí150 mm, 5 μm ) with the mixture of acetonitrile and water as mobile Phase in gradient mode,the detection waVelength of 290 nm,the flow rate of 1. 0 mL·min-1 ,the column temPerature of 30℃,the theoretical Plate number no less than 3 000. Results The linear relationshiP between content and Peak area was obtained in the range of 0. 025-0. 500 μg for cinnamaldehyde and 0. 10-2. 00 μg for hesPeridin. RSD of the Peak area of cinnamaldehyde and hesPeridin for the Precision test,the stability test and the rePeatability test were 1. 16%and 1. 03%,1. 27%and 1. 08%,1. 23%and 1. 28%,resPectiVely. The aVerage recoVery of cinnamaldehyde was 99. 24%with RSD of 1. 65%(n=9). The aVerage recoVery of hesPeridin was 99. 39%with RSD of 1. 85%(n=9). Conclusion The method can be aPPlied to quantitatiVe assay of cinnamaldehyde and hesPeridin in siweiqing buccal tablets with good reProducibility and sPecificity. The recoVery result met the accePtance criteria. The method can effectiVely control the quality of siweiqing buccal tablets with good sPecificity,reProducibility and stability,and can be aPPlied to the quality control of siweiqing buccal tablets.
2.Advance in flavin-containing monooxygenase 3(FMO3):structure/function and genetic polymorphisms
Hao CHEN ; Zhirong TAN ; Honghao ZHOU
Chinese Pharmacological Bulletin 2003;0(10):-
Flavin-containing monooxygenase 3 (FMO3) is an important hepatic microsomal enzyme that oxidizes a number of drugs,xenobiotics and other chemicals.Many variants in the gene encoding FMO3 have been identified,some of which result in altered enzymatic activity,consenquently,altered substrate metabolism.Studies also implicate individual and ethnic differences in FMO3.Thus,it is anticipated that knowledge regarding functionally-relevant FMO3 genetic variability will become increasingly important for drug development and patient therapeutic choices.
3.The exploration of training medical students’creativity and practice ability
Hua DU ; Zhirong ZENG ; Zenghuan ZHOU
Chinese Journal of Medical Education Research 2003;0(02):-
The article discusses the main problems existing in training medical students’ creativity and practice ability. By re-realizing the connotations of creativity and practice ability, this paper explore the paths for improving medical students’creativity and practice ability from students,teachers,teaching supervisors,and the college itself.
4.The application of five commonly used forecast methods of health human resources demand
Shuyun WEN ; Zenghuan ZHOU ; Zhirong ZENG
Chinese Journal of Medical Education Research 2006;0(11):-
The forecast of health human resources demand is the most important and one of the most complex aspects of health manpower planning projections. There are many methods in forecasting human resources demand,and each method has its own advantages and disadvantages. Five kinds of commonly used basic methods are comparatively analysised in this paper.
5.Construction of Cultivation Mode of Talents with Innovation in Medical Universities
Zenghuan ZHOU ; Zhirong ZENG ; Jie CHEN
Chinese Journal of Medical Education Research 2006;0(11):-
Modern medical education is characterized by innovative education,but the specialty of medical education determines the complexity of its innovative education.The paper elaborates the construction of cultivation mode of talents of creative pattern in medical universities by infiltrating and implementing the ideas and practice of innovative education into the full process of higher medical education proceeding with such innovative thoughts and quality training links as education concept,teaching mode,knowledge structure,training of methods and ability.
6.The Exploration of the Innovative Talents Training Mode in Medical Universities
Jie CHEN ; Zenghuan ZHOU ; Zhirong ZENG
Chinese Journal of Medical Education Research 2003;0(03):-
The fashion of innovative medical education prompted the teaching mode and teaching aims in medical colleges into fundamental innovation.In this paper,the authors have analyzed the advantages and disadvantages of talent training mode from medical colleges at home and abroad in the past few decades.The training mode for the innovative talents in the new period has been discussed.It includes the flowing aspects:the teaching aims,curriculum setup,teaching methods and education evaluation system.
7.A case of pyeloureteritis glandularis and cystitis glandularis and review of the relevant literature
Qiang WANG ; Hongyi ZHOU ; Zhirong WANG ; Feng XUAN ; Xing HUANG
Clinical Medicine of China 2011;27(12):1325-1326
Objective To explore the clinical character,diagnosis and treatment principals of pyeloureteritis glandularis and cystitis glandularis.Methods The clinical manifestation,character of imageology and endoscopy images of the case for one year follow-up were analyzed and the relevant literatures were reviewed.Results During one year follow-up,there was no clinical symptoms and any progress on imageology.The patient is still in close following-up.Conclusions According to literatures,cystitis glandularis is not common in clinical,and it should be paid more attention by clinicians.There were a few reports about the ureteritis glandularis.Pelvis,ureter and bladder have the same epithelial tissue,pyelitis glandularis is very rare,up to now there is no efficient treatment ways.
8.Effects of erythropoietin on nestin expression in neural stem cells of neonatal rats with hypoxia-ischemia brain damage
Hong JIANG ; Feng XU ; Chunqing ZHOU ; Xianghong LI ; Zhirong SHU
Chinese Journal of Tissue Engineering Research 2010;14(36):6837-6840
BACKGROUND: Nestin is a specific antigen of neural stem cells which widely expressed in lesion of nervous system and brain regeneration.Thus,nestin expression is commonly used to assess whether lesion or damage of the nervous system can promote neural regeneration.OBJECTIVE: To investigate the effects of erythropoietin(EPO)on nestin expression in neural stem cells after hypoxia-ischemia brain damage(HIBD)in neonatal rats from the angles of neural regeneration and activation of neural stem cells.METHODS: HIBD model was established by ligation of the right common carotid artery along with 2-hour 8% hypoxia exposure in neonatal rats.The control group was not subjected to hypoxia-ischemia,and the right common carotid artery was dissociated.The treatment group received an intraperitoneal injection of recombinant human erythropoietin(rh-Epo,5 000 IU/kg)once a day for three days after hypoxia/ischemia,while the two other groups intraperitoneally received normal saline at the same time.In each group,rats were randomly executed immediately,at 4,7,14 days after operation(n = 8).The nestin expression in hippocampal dentate gyrus region was examined by immunohistochemical staining and image quantitative analysis respectively.RESULTS AND CONCLUSION: The number of nestin-positive cells was significantly increased in HIBD group compared to control group at all time points(P < 0.05),and it was also significantly increased in treatment group than the other two groups at all time points(P < 0.05).The numbers of nestin-positive cells in hippocampal dentate gyrus region were significantly increased,and peaked on day 7 after operation in the three groups.The results showed that exogenous rh-Epo could enhance the expression of nestin in hippocampal dentate gyrus region of neonatal rats with HIBD,and promote the proliferation of neural stem cells,rh-Epo plays an important role in the regeneration and repair of neurocytes damaged by hypoxia-ischemia.
9.Relationship between MiR-195 and DLL4 expression and clinical features of colorectal cancer
Hui ZHANG ; Chenggang WANG ; Zhirong CUI ; Yingjiang YE ; Jing ZHOU
Chinese Journal of General Surgery 2021;36(3):169-173
Objective:To observe the expression patterns of miR-195 and DLL4 in colorectal cancer, and to explore the relationship between miR-195 and DLL4 and clinicopathological parameters and prognosis of patients with colorectal cancer.Methods:The relative expression of miR-195 in 56 colorectal cancer tissues was detected by real-time fluorescent quantitative PCR the expression of DLL4 protein and tumor microvessel density (MVD) were detected by bloting and immunohistochemistry. Colon cancer cell line SW480 was treated with miR-195. The expression of DLL4, Jagged1, (the intracellular domain of notch, NICD), CyclinD1, Hes1, Bcl-2 and NF-kB were detected by bloting.Results:The expression level of DLL4 protein in colorectal cancer tissues was significantly higher than that in normal intestinal mucosa (30/56 vs.16/56, t=5.323, P=0.018). The expression level of miR-195 was significantly lower than that in normal intestinal mucosa (36/56 vs.20/56, t=2.371, P=0.008). The expression of DLL4 was negatively correlated with the expression of miR-195 ( r=- 0.881, P=0.015) , which was closely related to the differentiation degree, lymph node metastasis and TNM stage . The prognosis of patients with high expression of DLL4 was significantly worse than that with low expression of DLL4 ( P=0.013). The prognosis of patients with low expression of miR-195 was worse than that with high expression of miR-195 ( P=0.009) . Conclusion:The antagonistic expression of miR-195 and Notch might be closely related to the occurrence and development of colorectal cancer, which can be used as a new reference index for prognosis of colorectal cancer.
10.Association of Pro12Ala polymorphism in the peroxisome proliferator-activated receptor-gamma2 with gastric cancers in China
Shanying LIAO ; Zhirong ZENG ; Shaozhang ZHOU ; Bin CHEN ; Pinjin HU
Chinese Journal of Pathophysiology 1986;0(04):-
AIM: To study the relationship among peroxisome proliferator-activated receptor-gamma2(PPAR ?2) gene Pro12Ala polymorphism,Helicobacter pylori(H.pylori) infection,and gastric cancer in China.METHODS: 104 consecutive patients with gastric cancer and 104 age-and sex-matched controls from Guangdong Province of southern China were examined.PPAR?2 Pro12Ala polymorphism was analyzed by PCR-restriction fragment length polymorphism method(PCR-RFLP).H.pylori status of subjects was determined by enzyme-linked immunosorbent assay(ELISA) for anti-H.pylori IgG.RESULTS: The prevalence of H.pylori infection was significantly higher in gastric cancer patients than that in control(81.7% vs 59.6%,2=12.27,P