1.COX-2 and its inhibitor Celecoxib in corneal neovascularization
Yuan, DONG ; Ming-Chang, ZHANG
International Eye Science 2006;6(3):523-526
AIM: To observe the expression of COX-2 in rat corneal neovascularization (CNV) and its relationship to CNV, and to explore the inhibition of Celecoxib, a COX-2 inhibitor, to CNV.METHODS: The distribution and quantification of COX-2and VEGF was detected by immunohistochemistry. Expression of COX-2 and VEGF mRNA was quantified by RT-PCR.The difference in protein and mRNA expressions of COX-2and VEGF was analyzed to find the correlation between them.RESULTS: Expression of activated COX-2 and VEGF protein and mRNA in CNV had a dynamic change. VEGF and COX-2co-localized. Compared with the control group, expression of both protein, mRNA of COX-2 and VEGF in experimental group Ⅱ and Ⅲ had significant difference (P<0.05), indicating the correlation between COX-2 and VEGF, while that in experimental group I had no statistical difference (P>0.05).CONCLUSION: COX-2 expression was up-regulated in inflammatory CNV. COX-2 modulates the expression of VEGF,playing a very important role in CNV. Celecoxib inhibit COX-2expression so as to hold back the CNV.
2.Study on Four Seasons’Influence on the Six Meridians Theory in Shanghan Lun and the Pulse System
Hong CHANG ; Dong WANG ; Guangji ZHANG
Journal of Zhejiang Chinese Medical University 2015;(6):433-435
Objective]To study the correspondence between human and universe theory in Shanghan Lun starting with Zhongjing ’s doctrine of treatment based on four seasons,analyse the influence of the changing seasons on giving names to the six meridians by Zhongjing ,research on the influence of pulse theory based on four seasons in Huangdi Neijing on the pulse system includes the six meridians system ,summarize the rules of the four seasons’ influence on the six meridians system in Shanghan Lun,and return to Zhongjing’s original viewpoint of four seasons and their yin and yang condition. [Method]By studying the Treatise on Four Seasons treatment Dafa Six Classics and veins in the school system, restore Treatise on Heavencorresponding way of thinking. [Result] It finds that seasons law is the core of six distinguished by its Zhongjing school system clock. [Conclusion] Studying the Four Seasonslaw andseasons therapy Dafa can know Treatise on Six by the corresponding season and six by the significance and reflects theTreatise onlearning system from four seasons pulse method.
3.Illustrate Six Merdians Theory with the Images of Bagua
Hong CHANG ; Dong WANG ; Guangji ZHANG
Journal of Zhejiang Chinese Medical University 2014;(11):1266-1268
Objective] The explanations of the six meridians theory in the book Shanghan Lun were always divergent, most of them explained it with medical theory of later ages.However, il ustrating it from the philosophic perspective was not commonly seen. Yi Jing, the book of changes, was the origin of traditional Chinese philosophy, and the six meridian system, which included three yin and three yang, was just derived from the four xiang(a traditional Chinese concept which refers to taiyang, shaoyin, shaoyang, taiyin). [Method] Through the eight trigrams and the images were analyzed with the Treatise on Six Classicsstate gasification combined with analysis Zhongjing Six Classics theoretical system and the principle of prescription. [Result] Found that eight trigrams can be good images of the corresponding six by the system, the difficult provisions in Tretise on Febrile Diseases were wel explained. [Conclusion]Through combining the images of Bagua(eight trigrams) in Yi Jing with six meridians in Shanghan Lun,il ustrating six meridians from philosophic aspect, and explaining the six meridians theory with philosophical ideas before Zhongjing ’s(the writer of Shanghan Lun) age, in order to provide new ways of thinking in comprehending the six meridians system.
4.The Application of Transcranial Color-Coded Sonography in Cerebrovascular Diseases
Dong-Ping ZHANG ; Chang-Lin HU ;
International Journal of Cerebrovascular Diseases 2006;0(12):-
Transcranial Doppler combined with flow imaging technique can conveniently,nonin- vasively and accurately detect the blood flow in large intracranial vessels.It has practical signifi- cance in the diagnosis and treatment of cerebrovascular diseases.This article reviews the appli- cation of transcranial color-coded sonography(TCCS)in cerebrovascular diseases.
5.Research progress of animal models of esophageal squamous cell carcinoma
Xinping ZHANG ; Shuai SONG ; Dong CHANG
International Journal of Surgery 2021;48(4):279-283
Esophageal cancer is one of the common malignancies of the digestive tract, and its exact etiology and pathogenesis have not been completely clear. The establishment of animal model of esophageal cancer provides support for the basic and preclinical research of esophageal cancer, which is of great significance for further study to clarify the pathogenesis and explore the development of new therapeutic drugs. At present, the animal models commonly used in the study of esophageal squamous cell carcinoma mainly include chemical induction model, heterotopic transplantation model and orthotopic transplantation model. With the continuous progress of animal research on human origin tumor, the human transplanted tumor model has been more and more widely used. No matter which model has its own advantages and disadvantages and applicability, should be selected according to the purpose of the experiment. In this paper, the research progress on animal models of esophageal squamous cell carcinoma in recent years is reviewed, and the models commonly used in scientific research and preclinical treatment are discussed, which may provide a theoretical basis for the clinical treatment.
6.Detection of Gene Resistant to ?-Lactam, Aminoglycosides and Disinfector among Clinical Isolated Strains of Multi-resistant Pseudomonas aeruginosa
Dong CHANG ; Wei JIANG ; Yong YU ; Heng ZHANG
Chinese Journal of Nosocomiology 2006;0(02):-
OBJECTIVE To investigate the positive rate of ?-lactamase,oprD2,aminoglycosides modifying enzyme and qacE△1 gene among clinical isolated strains of multi-resistant Pseudomonas aeruginosa in our hospital.METHODS P.aeruginosa was determined by VITEK,and MIC was determined by agar dilution method.TEM,IMP,VIM,oprD2,aac(3)-Ⅱ,aac(6′)-Ⅰ,aac(6″)-Ⅱ,ant(3″)-Ⅰ,ant(2″)Ⅰ and qacE△1 in strains were detected by polymerase chain reaction(PCR).RESULTS The positive rate of TEM,aac(3)Ⅱ,aac(6′)-Ⅱ,ant(3″)-Ⅰ and ant(2″)-Ⅰ in multi-resistant P.aeruginosa were 51.4%,48.6%,40.0%,54.3%,45.7% and 60.0%,respectively.No IMP and VIM genes were detected.CONCLUSIONS Positive rate of ?-lactamase, aminoglycosides modifying enzyme is high in 35 tested strains,and that should be paid more attention.
7.UPLC fingerprint for quality assessment of ginsenosides of ginseng radix et rhizoma.
Cuiying ZHANG ; Liang DONG ; Shilin CHEN ; Caixiang XIE ; Duanling CHANG
Acta Pharmaceutica Sinica 2010;45(10):1296-300
This paper is aimed to establish the method of fingerprint analysis of chemical constituents by reversed-phase ultra-performance liquid chromatography (UPLC) for the quality control of the roots and rhizomes of Panax ginseng (Ginseng Radix et Rhizoma). The method was performed on a ACQUITY UPLC BEH C18 (50 mm x 2.1 mm ID, 1.7 microm) with a mixed mobile phase of water and acetonitrile in a gradient mode. The flow rate was 0.3 mL x min(-1) and the wavelength of measurement was 203 nm. Eleven batches of the Ginseng Radix et Rhizoma were determined. The UPLC chromatographic fingerprints of chemical constituents were established from the eleven batches of the Ginseng Radix et Rhizoma and showed fifteen characteristic common peaks, among which fifteen peaks were recognized and nine compounds (ginsenosides Rg1, Re, Rf, Rg2, Rb1, Rc, Rb2, Rb3 and Rd) were determined by comparison with chromatographic behaviors and UV spectra of the authentic compounds. The eleven batches of samples were classified as two clusters by hierarchical clustering analysis (HCA) and principle component analysis (PCA), and six samples were confirmed to establish the mutual model. The quality was assessed by similarity evaluation system for chromatographic fingerprint of TCM (2004B Version). The convenient and high specific method can be used to identify and evaluate the quality of the Ginseng Radix et Rhizoma.
8.The study on alpha 1-antitrypsin expression in the synovial tissues of patients with ankylosing spondylitis
Yan ZHAO ; Hongtao DONG ; Xiaotian CHANG ; Xinfeng YAN ; Yunzhong ZHANG
Chinese Journal of Rheumatology 2011;15(10):677-681
ObjectiveTo investigate the expression of ATA1 in the synovial tissue from patients with ankylosing spondylitis (AS) and to localize expression of ATA1 in AS synovial membranes.In addition,tag SNPs were genotyped to determine the possible association of this gene with AS risk.MethodsWestern blotting analysis was applied to determine the expression of ATA1 in the synovial tissues by comparing the expression profiles of AS(n=8),rheumatoid arthritis(RA,n=9) and osteoarthritis(OA,n=9) samples.Immuno-histochemistry was used to localize the expression of ATA1 in the synovial membrane.The levels of ATA1 in the synovial fluid of patients with AS were determined using ELISA with OA and RA as controls.Taqman method was used to genotype tag SNPs (rs2753934,rs2749531 and rs6575424) in 56 AS cases,260RA cases and 160 healthy controls.ANOVA,LSD test andx2 test were used for statistical analysis.Results Increased expression of ATA1 in synovial membranes of AS was found when compared with samples from RA and OA.ELISA results showed significantly elevated level of ATA1 in the synovial fluid of patients with AS (1.6+0.6),but not in samples of RA(1.4±0.5) and OA (1.2±0.5)(P<0.05).Haplotype analysis did not reveal a haplotype association in AS or RA(P>0.05).ConclusionThe current findings suggest that upregulation of ATA1 may play an important role in the pathogenesis of AS.
9.The prognostic risk factors of low level malignant obstructive jaundice treated with transhepatic biliary drainage
Gang CHANG ; Dong XUE ; Xiaoyan ZHANG ; Yuehong GONG ; Zaibo JIANG
Chinese Journal of Postgraduates of Medicine 2014;37(20):51-54
Objective To explore the prognostic risk factors of low level malignant obstructive jaundice treated with transhapetic biliary drainage.Methods The clinical data of 142 patients with low level malignant obstructive jaundice received percutaneous transhapetic biliary drainage management from January 2010 to June 2013 were retrospectively analyzed.The study parameters included gender,age,tumor type,preoperative obstructive time,preoperative infection,drainage method,Child-Pugh grade,serum total bilirubin (TBIL),albumin (ALB),serum creatinine (SCr),the postoperative declining degree of bilirubin and postoperative antineoplastic therapy.The prognostic risk factors were evaluated.Results Single variable analysis showed that preoperative infection (P =0.006),Child-Pugh grade (P =0.004),SCr (P =0.043),the postoperative declining degree of TBIL (P =0.001) and postoperative antineoplastic therapy (P =0.015) were the related factors for survival time.The further Logistic regression analysis showed that preoperative infection (OR =3.729,95% CI 1.332-6.363,P =0.040),Child-Pugh grade ≥ 10 scores (OR =0.513,95% CI 0.375-1.276,P =0.018) and postoperative antineoplastic therapy (OR =0.668,95% CI 0.210-2.026,P =0.038) were the related factors for survival time.Conclusion In treating of low level malignant obstructive jaundice with transhapetic biliary drainage,the preoperative infection,Child-Pugh grade and postoperative antineoplastic therapy may be the important related factors that affect the patient's survival time,to evaluate the prognosis of these patients has important reference meaning.
10.Study of the Influencing Factors of Myocardial Infarction Patients Care Burden of Caregivers
Guojun XU ; Tao CONG ; Dong CHANG ; Yan ZHANG
Journal of China Medical University 2015;(7):622-625
Objective Through the evaluation of acute myocardial infarction patients care burden of caregivers,to understand caregiver stress con?dition,and to investigate the effective predictors of acute myocardial infarction patients care burden of caregivers,so as to provide the basis for im?provement of the care burden. Methods A cross?sectional study was conducted through convenience sampling using Zarit Caregiver Burden Inter?view as the measuring tool. Questionnaires were collected by face?to?face structured interviews towards caregivers. Care burden of caregivers was eval?uated on these primary caregivers of patients with acute myocardial infarction. Results Caregivers of patients with myocardial infarction endure high care burden level. There were statistically significance among patients with different ages or revenue,the relationship of caregivers with patients,nurs?ing hours per day,psychological alignment and patients′self?care ability. Conclusion Caregivers of patients with myocardial infarction endure high care burden level. The relationship between caregivers and patients,the patient′s gender,nursing total time,nursing time every day,and the pa?tient's life self?care ability are contributed to be predictive factors. Future interventions should be strengthen on the psychological ability of the align?ment as well as measures to improve the self?care ability of the patient's life.