2.Study on Optimum Preparation Process of Xiaochuan Tiegao by Orthogonal Design
Xuan ZHANG ; Qihua LIU ; Jin WEN
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(10):-
Objective To optimize the preparation process of Xiaochuan Tiegao. Methods The effective compound imporatorin of Dahurian Angelica Root was determined by HPLC. The best condition of preparation process for the ethanol-extraction method was investigated by L9(34) orthogonal design. Results The optimum technical condition:adding 2 times ethanol, cooking 1 hour and 2 times with 90% ethanol. Conclusion The method is reliable, accurate and easy to operate.
3.Determination of Sinapine Thiocyanate in Semen Sinapis Albae of Different Processed Products
Qihua LIU ; Xuan ZHANG ; Jin WEN
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(11):-
Objective To develop an HPLC method for the assay of sinapine thiocyanate in Semen Sinapis Albae of different processed products. Methods It was assayed by RP-HPLC. The column was Hypersil BDS Phenyl (5 ?m, 250 mm?4.6 mm), the mobile phase was acetonitrile-0.08 mol/L KH2PO4 (15∶85). The UV detection wavelength was 240 nm. The flow rate was 1.0 mL/min. Results Good linearity of sinapine thiocyanate was showed within the range of 0.8~4.0 ?g (r=0.999 7). The average recovery was 100.98% (RSD=3.51%). Conclusion The method is simple, accurate and good reproducible. It can be used for quality control of Semen Sinapis Albae of different processed products.
4.Bases Selecting and Quality Analysis of Sihuang Gao
Xuan ZHANG ; Qihua LIU ; Jin WEN
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(05):-
Objective To select the optimum bases for Sihuang Gao and study the method for quality control.Method Ultra-fine powders of Radix Scutellariae,Cortex Phellodendri,Radix et Rhizoma Rhei and Rhizoma Coptidis were used to prepare Sihuang Gao with different formulations,the bacteriostatic action of which were compared and stability were inspected.The best prescription was identified by TLC,and the skin irritation was observed.Result Sihuang Gao made of water-soluble base had a strong antibacterial activity and stable quality,and it was proved no irritation,the contents of active component could be detected by TLC.Conclusion The quality was controllable,and the improvement prescription can be used in the clinic.
5.Effect of high chromium yeast on blood lipids and pancreatic islets in type 2 diabetic mice model
Lu LIU ; Wen JIN ; Jiaping Lü
Chinese Journal of Clinical Nutrition 2012;20(2):93-98,后插一
ObjectiveTo study the impact of high chromium yeast on type 2 diabetic mice.MethodsA total of 60 Balb/C mice were used in this study.Fifty mice were injected with streptozotocin to induce type 2 diabetes,while the ten mice without injection were in the normal group.The type 2 diabetic mice were divided into 5groups according to their fasting blood sugar levels,including 3 groups receiving high chromium yeast at low [250μg/ (kg· d)],medium [500 μg/ (kg,d)],and high [1000 μg/ (kg· d)] doses,1 group receiving metformin ( positive control),and 1 group receiving normal yeast ( negative control).The yeast or metformin were given through by gastric lavage daily for 15 weeks.Body mass and blood biochemical indexes (fasting blood glucose,glucose tolerance,etc) were determined,and the pathological examination of pancreas was conducted.Results Compared with negative control group,medium dose high chromium yeast group had significantly lower triglyceride ( P =0.043 ),low and medium dose groups had lower total cholesterol ( P =0.006,P =0.003 ),low and high dose groups had higher insulin levels (P =0.011,P =0.002),and high dose group had significantly reduced glycosylated hemoglobin (P =0.027).Pathological examination of pancreatic islets revealed that medium and high dose groups did not develop infiltration of inflammatory cells.ConclusionsHigh chromium yeast may improve type 2 diabetes mellitus.Further studies are needed to confirm the conclusion of this study with an organic chromium control group.
7.Magnetic resonance imaging of moyamoya disease
Wen SUN ; Wenhua LIU ; Jin FAN ; Xinfeng LIU
International Journal of Cerebrovascular Diseases 2010;18(7):513-517
Moyamoya disease is a chronic progressive cerebrovascular disease which is characterized by progressive stenosis or occlusion at bilateral terminal portions of the internal carotid artery and its large branch vessels,and with an abnormal formation of new vascular network in skull base.As a noninvasive method,magnetic resonance imaging (MRI) plays an important role in the diagnosis and evaluation of moyamoya disease.This article reviews the application of MRI in the identification,diagnosis and treatment evaluation of the stroke subtypes in patients with moyamoya disease.
8.Feasibility of galactomannan assay in bronchoalveolar lavage fluid in diagnosis of hematologic malignancy patients with invasive fungal infections.
Yun LENG ; Wen-Ming CHEN ; Jin-Wei LIU
Chinese Journal of Hematology 2011;32(8):551-552
Adolescent
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Adult
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Aged
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Bronchoalveolar Lavage Fluid
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Feasibility Studies
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Female
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Hematologic Neoplasms
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microbiology
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Humans
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Lung Diseases, Fungal
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diagnosis
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etiology
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Male
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Mannans
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analysis
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Middle Aged
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Young Adult
9.Study of Experimental Parkinsonian Animal by Using High Performance Liquid Chromatography with Polymer-Overoxidized Polypyrrole Film Chemically Modified Electrode
Wen ZHANG ; Qun XU ; Xuni CAO ; Meichuan LIU ; Litong JIN
Chinese Journal of Analytical Chemistry 2001;29(2):133-137
A novel polymer- overoxidized polypyrrole film chemically modified electrode (CME) as the liquid chromatography-electrochemical detector (LC-ECD) was fabricated and applicated, which could be used to determine the monoamine neurotransmitters. The experimental model of parkinsonian animal was established by using medicine. Microdialysis sampling coupled with LC-ECD was used to monitor the monoamine neurotransmitters and their metabolites in experimental animal brain in vivo under different situations. The mechanism of experimental animal's Parkinsonian disease was studied elementarily. An accurate and reliable analysis method was supplied for filting the new and the more effective medicine to cure parkinsonian disease.
10.Effects of Compound Uncaria Hypotensive Tablets on Expressions of MCP-1 and MMP-9 of Vascular Remodeling in Spontaneously Hypertensive Rats
Jin FENG ; Wen ZHANG ; Jun QING ; Huimin LIU ; Yuansheng TAN
Chinese Journal of Information on Traditional Chinese Medicine 2016;23(10):51-55
Objective To observe the effects of Compound Uncaria Hypotensive Tablets on expressions of MCP-1 and MMP-9 of vascular remodeling in spontaneously hypertensive rats (SHR); To discuss it possible mechanism of action. Methods Totally 24 12-week old male SHR were randomly divided into SHR model group, Compound Uncaria Hypotensive Tablets group, and positive medicine group, with 8 rats in each group. Another 8 WKY rats were set as normal control group. Medication groups were given relevant medicine for gavage for successive 6 weeks. Noninvasive tail cuff method was used to observe blood pressure; morphological changes in thoracic aorta and renal artery were observed by HE staining; immunohistochemistry was used to detect the protein expressions of MCP-1 and MMP-9 in thoracic aortic wall. Results Protein expressions of MCP-1 and MMP-9 in thoracic aortic wall of SHR model group were significantly higher than those of normal control group (P<0.01); Compared with the SHR model group, protein expressions of MCP-1 and MMP-9 in thoracic aortic wall decreased significantly in the medication groups (P<0.05, P<0.01); Compared the Compound Uncaria Hypotensive Tablets group and positive medicine group, there was no obvious difference in protein expressions of MCP-1 and MMP-9 in thoracic aortic wall. Conclusion Compound Uncaria Hypotensive Tablets can reduce the blood pressure of SHR, reduce inflammation reaction, and regulate vascular remodeling, which mechanism may be related to down-regulation of expressions of MCP-1 and MMP-9 in SHR aortic endothelial cells.