1.Thinking on Several Ethical Problems in the Clinical Research
World Science and Technology-Modernization of Traditional Chinese Medicine 2013;(4):721-724
This study was conducted in the First Affiliated Hospital of Zhejiang Chinese Medical University for the project of Establishment and Assessment of Ethics Review Platform for TCM Clinical Research. The Ethics Review Platform for Clinical Research is a complete system, which is a Participant Protection System. It includes four as-pects, which are the medical and health institution, ethics committee, ethics committee office, research departments and researchers. In this system, the establishment of research departments and researchers platform is the most cru-cial part. All treatment, protection, risk control, adverse event supervision, which are closely related to the Partici-pant Protection System are completed by researchers. However, during the assessment process, a series of problems were found, such as the current weak ethical consciousness of researchers, less familiar with ethical review process and do not pay equal attention to the participant protection as clinical research. This kind of problem was also found in other hospital assessments in China, which has become a short board of the Participant Protection System.Therefore, from the aspect of the ethics committee, this article presented several ethics problems which should be paid more attention to by researchers such as participant protection, plan design and conduction during the clinical research and also gave some useful advices to change the situation, according to the Assessment Standard of Ethics Review Platform for TCM Clinical Research. In this way, researchers will develop their ethical consciousness and be more familiar with the ethics review process in order to complete key task of participant protection.
2.Extraction of Essential Oil from Asarum forbesii Maxim. by Supercritical Fluid Extraction(SFE)
Jian CHEN ; Yi PAN ; Qingsheng LIN
China Pharmacy 2007;0(36):-
OBJECTIVE:To facilitate the application of Asarum forbesii Maxim. in the fields of medicine and fine chemicals. METHODS:The essential oil was extracted from Asarum forbesii Maxim. by supercritical fluid extraction (SFE), and the chemical constituents of essential oil were analyzed by GC-MS. RESULTS:22 constituents were identified, dominating the list were 1,2-Benzenedicarboxylic acid (mass fraction:20.47%), Eugenol methyl ether (15.37%),(Z)-9-Oleic acid(13.21%), 9,12-Octadecadienoic acid (Z, Z) (12.53%),Elemicin (11.05%), n-Hexadecanoic acid (7.59), Octadecanoic acid (4.36%). CONCLUSION:The method used on essential oil extraction serves as references for the further exploitation and utilization of Asarum forbesii Maxim..
3.The research progress in induced pluripotent stem cell in ophthalmology
Chinese Journal of Experimental Ophthalmology 2012;30(7):662-666
The establishment of induced pluripotent stem cells(iPSCs)has been a major breakthrough in the field of stem cell research since 2006,and it made possible for the use of stem cells in treating retinal degenerative diseases.Research showed that fibroblast,B lymphocytes,neural stem cells,hair corneous cells,pancreatic cells,mesenchymal cells of umbilical cord stroma and amniotic membrane can be reprogrammed as iPSCs,and they are capable of differentiating into specific types of cells.Some novel developments in iPSCs study in ophthalmology also were observed over the past few years.Induced iPSCs can differentiate into retinal pigment epithelial cells,photoreceptors and other retinal cells,which lay a foundation for the therapy of retinal degenerative diseases.Differented from traditional treatment of stem cells,the generation of iPSCs makes it possible to utilize somatic cells derived from patients for stem cell therapy without provoking ethical and immunological problems.The generation of iPSCs,the current research about iPSCs in the ophthalmic field,the limitations of iPSCs in the clinic and their future development and application were reviewed.
4.Expression variation of kidney OATP-3 relating to rocuronium metabolism in rats during anhepatic phase
Yifei CHEN ; Guocai TAO ; Jian CUI ; Bin YI
Journal of Third Military Medical University 2003;0(10):-
Objective To investigate the expression variation of kidney OATP-3 in rats relating to rocuronium metabolism in anhepatic phase and to primarily explain the reason of extrahepatic metabolism characters of rocuronium. Methods Twelve rats were distributed to 2 groups randomly with 6 in each: Group A (control group) and Group B in which the hepatic portal devascularization was performed for 60 min. Kidney tissues of the rats were taken. oatp-3 mRNA was detected by RT-PCR and OATP-3 protein by Western blotting. Results The expression levels of kidney OATP-3 mRNA and protein in Group B were significantly higher than those in Group A(P
5.Effects of Ginkgolides Inhalation on Eosinophils Infiltration in Airway of Asthmatic Guinea Pig Model
Jian GAO ; Liang CHENG ; Yi CHEN ; Yu TANG
China Pharmacy 2005;0(15):-
OBJECTIVE: To observe the effects of Ginkgolides inhalation on eosinophils infiltration in airway of asthmatic guinea pig model. METHODS: Guinea pigs were divided into seven groups(n=8 in each group): model group, ginkgolides inhalation low, medium and high dosage groups(5, 10, 20mg?kg-1, respectively), ginkgolides ip group (at a dosage of 20 mg?kg-1), Dexamethasone ip group (at a dosage of 10 mg?kg-1), normal control group. The eosinophils (EOS) in bronchoalveolar lavage fluid (BALF) and trachea were counted. RESULTS: As compared with normal control group, the number of EOS in BALF was significantly increased in model group, but that in BALF and trachea of the Ginkgolides inhalation group was significantly reduced(P
6.Evaluation the role of myocardial perfusion of MRI and MR cine in acute coronary syndrome
Yi WANG ; Xiangke DU ; Jian LIU ; Lei CHEN ; Yanping SUN
Chinese Journal of Radiology 2001;0(08):-
Objective To evaluate the role of comprehensive cardiac MRI (CMRI) in diagnosis of patients with coronary artery disease (CAD) Methods 55 patients with acute coronary syndrome underwent MR imaging 3-6 months after the reperfusion therapy Short axis images acquired by cine FIESTA sequence were used to analyze the motion of the different anatomy regions Used the FGRE ET sequence to detect the patterns of the first pass perfusion after injection of 0 2 mmol?kg 1 Gd DTPA at a flow of 3 ml?s 1 7-12 min later, MDE pulse sequence used to recognize the high signal in the myocardium Results At study entry, 38 subjects had the defect in the first pass perfusion The signal in the defect was significantly lower than that in the normal regions, which always in the subendocardium 51 subjects had delayed enhancement regions in the myocardium at different degree and different range The mean intensity of hyperenhanced regions was 4 36 times higher compared with that of the regions without hyperenhancement The difference between the 2 regions had statistical significance The extent of hyperenhancement was significantly related to the abnormality of wall motion The range of delayed enhancement was bigger than that of the first perfusion defect Conclusion Comprehensive evidence of delayed hyperenhancement, dysfunction of myocardium, and the defect of first pass perfusion can be used to predict myocardial infarction
7.Cerebral Sparganosis mansoni: a case report.
Hai-feng LI ; Jian-di GAO ; Yi CHEN
Chinese Journal of Pediatrics 2008;46(11):875-876
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Sparganum
8.Effect of Simotang on gastrointestinal motility and expression of vasoactive intestinal peptide in chronical stressed mice
Baiyan LIU ; Jian YI ; Xuemei CHEN ; Xiaoyuan LIN ; Guangxian CAI
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(4):292-294
Objective To explore effect of Simotang on gastrointestinal motility and expression of vasoactive intestinal peptide(VIP) in the hypothalamus, spinal cord and duodenum of chronical stressed mice. Methods Mice were randomly divided into normal, stress and Simotang group( n= 10 in each group), and given a variety of unpredictable chronic mild stress. After 21 days gastric emptying and intestinal propulsion function were measured,the expression of VIP was detected by immunohistochemistry and RT-PCR. Results Compared with mice in normal group( (49.81 ± 8.56)%; (51.02 ± 5.11 )% ), chronic stress increased gastric residual rate( (61.53 ±8.71 ) %; P < 0.05 ) and reduced small intestine propulsion rate ( ( 31.79 ± 2.38 ) %; P < 0. 05 ). There were differences in expressions of VIP positive cells and mRNA in duodenum( (8.8 ± 1.1 )/mm2 and(0. 58 ±0.03) ),hypothalamus ( ( 12.9 ± 1.5 )/mm2 and (0.81 ± 0. 07 ) ) and spinal cord ( ( 12.1 ± 1. 2)/mm2 and (0.76 ± 0.02) )in chronic stress group compared with normal group( (6.5 ± 0. 9)/mm2 and (0.43 ± 0. 04);( 10.8 ± 1.3 )/mm2and (0.57 ± 0.03 ); (9.3 ± 1.5 )/mm2 and (0.53 ± 0. 02 ) respectively). There was not difference in gastric residual rate (52.93 ± 9.15 )%, small intestine rate(48.98 ± 4.38 )% and expressions of VIP positive cells and mRNA in duodenum ( (6.7 ± 0.9)/mm2 and (0.48 ± 0. 05 ) ), hypothalamus ( ( 10. 6 ± 1.4 )/mm2 and ( 0. 61 ± 0. 05 ) )and spinal cord ( (9. 1 ± 1.3)/mm2 and(0.55 ± 0.05 ) ) in Simotang group compared with those in normal group (P > 0.05 ), but there were decreased compared with those in chronic stress group (P < 0.05 ). Conclusion Simotang can regulate expressions of VIP in duodenum, hypothalamusand spinal cord in chronically stressed mice.
9.Effects of low molecular weight heparin on newborn mouse liver cells congenitally infected with human cytomegalovirus
Shaoqing GU ; Jian LI ; Huijuan CHEN ; Liangying YE ; Yi ZHENG
Chinese Journal of Infectious Diseases 2011;29(12):705-709
Objective To explore the effects of low molecular weight heparin (LMWH) on the virological and pathological changes of newborn mouse liver congenitally infected with human cytomegalovirus (HCMV).Methods Sixty healthy pure line clean level BALB/c mice which were about 10 weeks old (half were female) were divided into five groups (six pairs in each group).The mice in LMWH intervention group and positive control group were intraperitoneally inoculated with 6.0 lg tissue culture infective dose50 (TCID50) of HCMV AD169; those in blank control group were intraperitoneally injected with 0.5 mL dulbecco's modified Eagles medium (DMEM) ; then all the mice were paired to mate.The pregnant mice in LMWH intervention group Ⅰ were subcutaneously injected with LMWH 1000 U/kg daily for 10 days; those in group Ⅱ were subcutaneously injected with LMWH 1000 U/kg daily for 5 days and their newborn mice were subcutaneously injected with LMWH 1000 U/kg daily for 5 days; those in group Ⅲ were subcutaneously injected with LMWH 1000 U/kg daily for 10 days in their newborn mice.All these newborn mice were sacrificed at day 10 of birth.The liver was removed for virus isolation,dry-wet weight determination,pathology examination and quantitative fluorescence-polymerase chain reaction (PCR) detection.The comparison among groups was done by analysis of variance.Results HCMV was isolated from the supernatant of liver tissue homogenate in 10-day positive control newborn mice,while HCMV was isolated in 24-day newborn mice of the other three groups of LMWH intervention.Pathology confirmed that positive control liver tissue had inflammatory changed,liver cell inflammatory swelling degeneration,vacuoles degeneration,specific HCMV inclusion body in nuclear,and portion of liver cell necrosis,while liver pathological results of LMWH intervention group showed mild liver cell inflammatory changes and slight cell inflammatory swelling degeneration,which were similar to the blank control group.The moisture of liver tissue contents in LMWH intervention group decreased more obviously than positive control group.The HCMV DNA loads in 50 mg liver tissues of LMWH intervention groups Ⅰ,Ⅱand Ⅲ were (3.26±0.43),(3.26±0.41) and (3.32±0.51) lg copy,respectively,which were significantly lower than that of positive control group [(7.38 ± 0.53) lg copy; F =314.620,P0.01],while there were no significant differences among LMWH intervention groups (P>0.05).Conclusion LMWH intrauterine and postnatal interventions can significantly reduce HCMV DNA replication in hepatocytes,and relieve inflammatory changes in liver tissue.