2.Application of self-made pelvic bag in treatment for patients with unstable pelvic fracture
Mei LIU ; Chunjing YANG ; Jiahu FANG ; Xi CHEN ; Jing YANG
Modern Clinical Nursing 2017;16(1):63-65
Objective To explore the effect of the self-made pelvic bag on patients with unstable pelvic fracture.Methods Toally 24 patients with unstable pelvic fracture from January 2013 to June 2014 were set as control group and used conventional nursing.Toally 30 patients from July 2014 to December 2015 were set as observation group.The self-made pelvic bag was used in the observation group for pelvic fixation and suspension traction.The degree of pain was compared between the pre-and post-use of the bag.Result The pains after using pelvic bag in the observation group were significantly lower than that of the control group (P<0.001).Conclusions The self-made pelvic bag can be effective for the pelvic fixation and suspension for the patients with pelvic traction.At the same time it can relieve the pain.
5.Quality Standard for Tiaolitongbao I Capsules
Xi LI ; Mei LIU ; Dan WU ; Yang ZHANG ; Yan ZHANG
China Pharmacist 2017;20(8):1474-1476
Objective: To establish the quality standard for Tiaolitongbao I capsules.Methods: The components including Astragalus , Atractylodes, Finger citron and Radix aucklandiae were identified by TLC.Emodin, the effective component of Polygonum cuspidatum , was determined by HPLC.Results: The characteristic spots in TLC were clear without any interference.The linear range of emodin was 4.25-68.00 μg·ml-1 (r =0.999 9).The average recovery was 95.22% ,and RSD was 1.47% (n =6).Conclusion: The methods used for the identification and quantification are sensitive, simple and accurate, which can be used for the quality control of Tiaolitongbao I capsules.
6.Effects of fibrogenetic growth factors on migration of hepatic stellate cells
Chang-Qing YANG ; Yi-Zhong CHANG ; Xi-Mei CHEN ;
Chinese Journal of Digestion 2001;0(12):-
Objective To investigate the impact of alterations within the space of Disse micro- environment on the migration of hepatic stellate cells(HSC) during the process of liver fibrosis,and to ex plore the novel mechanism of liver fibrosis from the view of cell migration.Methods A modified in vitro Boyden chamber system to partially mimic in vivo microenvironment of Disse space of normal and liver fibrosis was employed.The effects of fibrogenetic growth factors on the migration of HSC in liver fibrosis were observed via cell migration and cell proliferation experiments.Results Enhanced platelet-derived growth factor(PDGF)-BB,transforming growth factor(TGF)-?1 and/or epithelial growth factor(EGF) in liver fibrosis resulted in an increase in migratory capacity of activated HSC.The enhanced migration of HSCs induced by PDGF-BB was partially associated with their increased proliferation,while,TGF-?1 or EGF-induced migration was proliferation independent.The elevation of basic fibroblast growth factor (bFGF) or vascular endothelial growth factor(VEGF)during liver fibrosis had no effect on the migration of HSCs.Conclusions The study provides valuable insights into the role of space of Disse microenvironment in regulating HSC migratory behavior.TGF-?1,PDGF-BB and EGF,which increased in liver fibrosis, could induce the migration of activated HSC.However,bFGF or VEGF has no such kind of effect,al- though they also increased during liver fibrosis.
7.Rapid detection of extrinsic harmful contaminants using quantum dots-coated probes and their application prospects in traditional Chinese medicine.
Xi-Hui YANG ; Wei-Jun KONG ; Mei-Hua YANG ; Shi-Lin CHEN ; Ming ZHAO ; Zhen OUYANG
China Journal of Chinese Materia Medica 2013;38(23):3997-4005
The contamination of extrinsic harmful contaminants including mycotoxins, heavy metals and pesticides, etc, brings serious risks to traditional Chinese medicines (TCMs), further to human health. Due to their unique photoluminescence, chemiluminescence, electrochemical and electrochemiluminescence properties, semiconductor quantum dots (QDs) nanoparticles are widely used to immobilize bioprobes and biosensors, etc. In this review, the luminescence characteristics and specific ligands of QDs probles which are used to determine contaminants were summed up. Then, the applications of QDs-coated novel probes in the determination of mycotoxins, heavy metals and pesticides were discussed in detail. In addition, the contamination levels and characteristics of extrinsic harmful residues in TCMs were investigated. Further, the maximum levels of those contaminants in TCMs were compared with those set by various countries. Finally, the future development trends and problems of QDs-coated probes in the determination of those extrinsic residues in TCMs were prospected.
Drug Contamination
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prevention & control
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Humans
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Medicine, Chinese Traditional
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methods
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Nanotechnology
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instrumentation
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methods
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Quantum Dots
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Safety
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Time Factors
8.Effect of dexamethasone Angelica sinensis polysaccharide prodrug on trinitrobenzene sulfonic acid induced ulcerative colitis in rats
Xinyou LIU ; Siyuan ZHOU ; Jianfeng CHENG ; Zenghui TENG ; Yuhua RAN ; Runtao YANG ; Xi YANG ; Qibing MEI
Chinese Journal of Clinical Pharmacology and Therapeutics 2004;0(07):-
AIM:To explore the therapeutic effect of dexamethasone Angelica sinensis polysaccharide prodrug(DEX-AP) on trinitrobenzene sulfonic acid(TNBS) induced ulcerative colitis(UC) in rats and its side effects.METHODS: The experimental UC rats were induced by clusis of the solution of TNBS in 45% alcoho1(50(mg?ml~(-1))).The UC rats were orally administrated with(0.25)(?mol?kg~(-1)?d~(-1)) DEX and(0.05),(0.25),(1.25)(?mol?kg~(-1)?d~(-1)) DEX-AP(calculated by carried DEX in DEX-AP) for 7 days,respectively.The rats were killed after the amount of peripheral blood lymphocyte was counted,then the spleen,thymus and colon were separated and weighted.After the ulcerative area of colon was calculated,the colonic myeloperoxidase(MPO) activity was determined and parts of colon were paraffin sectioned and examined under light microscope by HE stain.RESULTS: After the UC rats were administrated with different doses of DEX-AP for 7 days,the ulcerative area,the weight and the MPO activity of colon reduced significantly.The reduction of MPO activity was correlated to the dose of DEX-AP and the MPO activity with DEX-AP at the doses of(0.25),(1.25)(?mol?kg~(-1)?d~(-1)) reduced more significantly than that with DEX at the the dose of(0.25)(?mol?kg~(-1)?d~(-1)).The number of peripheral blood lymphocyte,spleen weight and thymus weight of UC rats reduced significantly at the dose of(0.25)(?mol?kg~(-1)?d~(-1)) DEX(P
9.Secretory-expression of Antimicrobial Peptide Bactenecin7 Gene in Lactococcus lactis and Analysis the Bioactivity of Its Expression Products
Pu LI ; Yang-An WEN ; Jin-Bo LIU ; Xi-Mei YANG ; Jin-Jing ZHOU ; Zhi-Guang TU ;
China Biotechnology 2006;0(01):-
To construct a secretory-expression vector of antimicrobial peptide Bactenecin 7(Bac7),and identify the secretory-expression product in L.lactis MG1363 and its bioactivity.The splicing primers of regulation elements and Bac7 gene,which designed according to codon usage preferences of L.lactis MG1363,were chemically synthesized,and the overlap-extension PCR method was used to splice the full length of Bac7 gene.Then the Bac7 gene was linked to expression vector pMG36e to construct pMG36e/Bac7 vector,and pMG36e/Bac7 was transformed into L.lactis MG1363 by electrophoration.RT-PCR and Western blot assays were applied to investigate the expression of the Bac7 gene in L.lactis,and bioactivity of Bac7 in culture supernatant of L.lactis was tested with plate-diffusion method.The results showed that the Bac7 gene and its regulation elements was amplified and cloned in the vector pMG36e successfully,The secretory-expressed Bac7 in L.lactis MG1363 harboring pMG36e/Bac7 was identified by Western blot,and it had high bacteriostatic activity against E.coli.These results indicate that the recombinant L.lactis MG1363 could express bioactive Bac7,which lays a foundation for further study of oral administration of a Bac7-secreting L.lactis to treat intestinal bacteria infection.
10.Colon-targeted delivery system of dexamethasone-angelica sinensis polysaccharides prodrug in rats
Xinyou LIU ; Siyuan ZHOU ; Jianfeng CHENG ; Yuhua RAN ; Zenghui TENG ; Runtao YANG ; Xi YANG ; Qibing MEI
Chinese Journal of Clinical Pharmacology and Therapeutics 2002;0(05):-
AIM: To explore the transport and delivery of active drug from dexamethasone-angelica sinensis polysaccharides prodrug in the gastrointestinal tract of rats. METHODS: Dexamethasone and the prodrug were orally administered to rats at the dose of 1.96 mg?kg~ -1 (calculated by carried dexamethasone). The drugs in the plasma and contents of different parts of the rats' gastrointestinal tract were determined by high performance liquid chromatography (HPLC). RESULTS: Dexamethasone carried by the prodrug was mainly released in the contents and mucosa of cecum and colon after oral administration of the prodrug. The absorption of released dexamethasone was reduced significantly. The peak time, peak concentration and AUC were 7.2 h , 42 ?g?L~ -1 and 334 ?g?h?L~ -1 , respectively. However, free dexamethasone was found mainly in the contents and mucosa of the stomach, proximal and distal small intestine after oral administration. The peak time, peak concentration and AUC were 2.2 h, 2 120 ?g?L~ -1 and 11 875 ?g?h?L~ -1 , respectively. CONCLUSION: Dexamethasone can be specifically delivered to the cecum and colon by using dexamethasone- angelica sinensis polysaccharides prodrug. The absorption of dexamethasone was reduced significantly and the drug concentration in colon was increased significantly. The prodrug has a potential in the treatment of colitis.