1.Construction of clinical teachers'post-job education system in medical colleges
Chinese Journal of Medical Education Research 2005;0(06):-
Most of the clinical teachers in medical colleges have not received training in the teaching profession.This article explores the post-job education system of the clinical teachers in our hospital,aiming at improving the quality of medical education.
2.The clinical analysis of long term treatment and management of 122 asthmatic patients
Yifeng HUANG ; Ting CHEN ; Hui XI
Chinese Journal of Respiratory and Critical Care Medicine 2003;0(01):-
Objective To explore a brief regimen to treat and manage asthmatic patients.Methods 122 asthmatic patients(including 12 inpatients) treated and managed at respiratory clinic were followed up for 1~10 years.The data of these patients were collected and analysed Results On the base of asthma education patients were received inhaled glucocorticoid combined with ? 2 agonist and/or theophylline for two to five years Of 122 patients,20(16 4%) patients remised and remained good control without any medication,90(73 8%) patients relapsed within 1 to 2 years after drug withdrawal Conclusions Asthmatic patients must be treated and managed regularly according to GINA It was especially emphasized that inhaled glucocorticoid is the mainstay of ling term threapy Most patients can remise for quite a long time with agreeable quality of life while a few patients can be cured
3.Role and Clinical Significance of Myeloid Differentiation Protein-2 in Endotoxin Signal Transduction
xi-hua, YUAN ; chang-hui, CHEN
Journal of Applied Clinical Pediatrics 1992;0(06):-
Myeloid differentiation protein-2(MD-2)can separately and simultaneously bind lipopolysaccharide(LPS)and toll-like receptor 4(TLR4)has been shown to play critical roles in mediated recognition responses to LPS by TLR4 and signal transduction induced by LPS.MD-2 can be bound by LPS,not TLR4.The cells have no responsiveness or weak responsiveness to LPS without MD-2.MD-2 can be secreted into blood plasma,formed soluble MD-2 and remotely regulated cells that contained TLR4 without MD-2.MD-2 has been shown to play important roles in endotoxin signal transduction.MD-2 is a small molecular,short nucleic acid fragment,easily regulated should become a new potential anti-inflammatory target.
4.Transdermal drug delivery technology for brain-targeted drug delivery
Acta Pharmaceutica Sinica 2023;57(8):2334-2340
Intracerebral delivery of drugs for the treatment of central nervous system disorders is usually limited by the blood-brain barrier (BBB). Transdermal drug delivery systems (TDDS) have the advantage of improving patient compliance and avoiding first-pass effects compared to intravenous, oral and intranasal drug delivery, and are an emerging non-invasive drug delivery route that facilitates long-term drug delivery to patients. The discovery of direct subcutaneous targeting of lymphatic pathways to brain tissue has made TDDS a new brain-targeted drug delivery strategy. At the same time, the development of nano-delivery technology has further facilitated the application of TDDS for targeted drug delivery to the brain. This review summarizes the mechanism of transdermal drug delivery into the brain and the application of TDDS in the treatment of brain diseases, providing new ideas and methods for the treatment of central nervous system diseases.
6.Expression of ErbB3 in pancreatic cancer cell line regulated by microRNA-148a
Hui FENG ; Weiyan YAO ; Xi CHEN ; Chenyu ZHANG ; Yalei WANG
Chinese Journal of Digestion 2013;(6):399-402
Objective To look for and confirm the downstream regulated gene of microRNA (miRNA)-148a in pancreatic cancer cell line.Methods The target gene regulated by miRNA-148a was predicted through bio-informatics analysis.The plasmid containing desired gene and with luciferase 3'-untranslated region (3'-UTR) reporter was constructed.Pancreatic cancer cells BXPC-3 were transfected with analogs and inhibitors of miRNA-148a by liposomes.The activity of luciferase was measured to determine whether miRNA-148a directly connected with desired gene.The expression level of miRNA-148a was changed in BXPC-3 cells,and the changes of target gene v-verb-b2 erythroblastic leukemia viral oncogene homolog 3 (awian) (ErbB3) expression were detected by Western blot at protein level.The data were analyzed by one way ANOVA.Results There was a conservative binding site of ErbB3 with miRNA-148a detected by bio-informatics analysis,miRNA-148a directly combined with ErbB3 and the activity of luciferase decreased to (25.00+47.00) % of the negative control (F=4.66,P< 0.01).After miRNA-148a overexpression,the gray value of ErbB3 expression in BXPC-3 cells decreased to (26.16±4.69)% of control group (F=6.563,P<0.05).Conclusion miRNA-148a directly targeted and regulated the expression of ErbB3 in pancreatic cancer cell line BXPC-3.
10.Immunoregulation effect of TIGIT-Fc on macrophages
Xia ZHAO ; Xi CHEN ; Zhelong LIU ; Hui CHENG ; Wentao HE
Chinese Journal of Immunology 2015;(2):210-214
Objective:To prepare the production of TIGIT-Fc fusion protein using H22 cells stably integrated the gene by lentivirus vector , and to explore the immunoregulatory effect on macrophages by TIGIT-Fc.Methods: TIGIT-Fc fusion gene were constructed by molecular cloning.The fusion gene was then subcloned to plasmids contained the secretion signaling peptide .The secrected TIGIT-Fc fusion gene was inserted into the lentivirus backbone vector.The purified lentivirus vector was the used to infect the murine H22 cell line.TIGIT-Fc protein was purified by protein A column from the ascites of H 22-injected C57BL/6 mice.Macrophages stimulated by lipopolysaccharide ( LPS ) was challenged to TIGIT-Fc treatment or control.Cytokine levels was then detected by ELISA.Results: TIGIT-Fc protein was purified from the ascites of H 22-injected mice.PVR was upregulated in LPS-treated macrophages.IL-10 level was upregulated in TIGIT-Fc treated macrophages.Conclusion: TIGIT-Fc promotes the mature macrophages to secrete anti-inflammatory cytokine IL-10.