1.Study of relationship between pathological types of thrombus and changes of ST segment in patients with acute myocardial infarction
The Journal of Practical Medicine 2015;(20):3311-3313
Objective To investigate the relationship between pathological types of intracoronary thrombus and changes of ST segment in patients with acute myocardial infarction. Methods Thrombus aspiration during primary PCI was performed in 65 ST-elevation myocardial infarction (STEMI) patients and 42 non-ST-elevation myocardial infarction (NSTEMI) patients. Pathological analysis on thrombosis was made. Results Thrombi characteristics were collected from 48 STEMI patients and 12 NSTEMI patients. In the STEMI group, 39(81.3%) red/mixed thrombus and 9(18.7%) white thrombus were found. While in the NSTEMI group, 8(66.7%) white thrombus and 4(33.3%) red/mixed thrombus were obtained. Conclusions There are both red/mixed and white thrombus in the two kinds of acute myocardial infarction. A variety of elements, including thrombus formation, could contributes to the change of ST in electrocardiograph during acute myocardial infarction.
2.Roles of the CXCL12-CXCR4/CXCR7 chemokine axis in colorectal carcinoma
Journal of Medical Postgraduates 2015;(1):102-105
Colorectal carcinoma ( CRC ) is one of the malignant tumors with the highest morbidity and mortality rates in the world.The invasion and metastasis of CRC are the major reasons for treatment failure and death .It was believed that CXCR 4 was the exclusive receptor for CXCL12.However, recent studies have identified CXCR7 as a second receptor for CXCL12.Both chemokine ax-es of CXCL12/CXCR4 and CXCL12/CXCR7 closely correlate with the proliferation , migration, adhesion of tumor cells and the forma-tion of tumor-associated vessels in CRC , which may become new significant targets for anti-cancer and anti-metastatic treatment of CRC.
3.Research progress of RRx-001 as a sensitizer for radiotherapy
Yang GAO ; Cuihong YANG ; Liping CHU
Tianjin Medical Journal 2017;45(5):545-548
Radiotherapy is one of the most important methods to treat malignant tumors. Due to the presence of radiation resistance, the effect of radiotherapy is not entirely satisfactory. To alleviate radiation resistance and improve the radiotherapy effect, radiosensitizers have emerged. As a newly discovered radiosensitizer, RRx-001 has a good clinical application prospect. This paper reviewed the research progress of RRx-001 in source, safety, radiotherapy sensitizing activity and related mechanisms.
4.Peripheral blood mononuclear cells (PBMCs) from patients with systemic lupus erythematosus me-diate the adhesion of T lymphocytes to endothelial ceils
Chinese Journal of Dermatology 2009;42(7):470-472
Objective To observe whether peripheral blood mononuclear cells (PBMCs) from patients with active systemic lupus erythematosus (SLE) can induce the adhesion of T lymphocytes to endothelial cells. Methods Sera and PBMCs were obtained from patients with active SLE and normal human controls. PBMCs were cultivated and culture supematants were harvested. Human umbilical vein endothelial cells (HUVECs) were cultured in vitro with or without the presence of the sera or culture super-natants of PBMCs. Some cells were pretreated with the antibody to IL-17 before the treatment with the sera or supematants. After another 48-hour culture, RT-PCR and real-time PCR were used to detect the mRNA expressions of adhesion molecules, including intercellular adhesion moleeule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1) and E-cadherin in HUVECs, wound healing assay to estimate the motility of HUVECs. Additionally, T lymphocytes were added to HUVECs 48 hours after stimulation with the sera or supematants, the adhering of T lymphocytes to HUVECs was observed by microscopy. Results After stimulation with supematants of PBMCs from patients with active SLE, the mRNA expressions of ICAM-1, VCAM-1 and E-cadherin were significantly increased in HUVEC, while the increase could be inhibited by the antibody to IL-17. The elevation of adhesion molecule expression subsequently promoted the motility of HUVEC, mediated the adhesion of T lymphocytes to HUVEC, and the antibody to IL-17 could suppress the adhesion of T lymphocytes and motility of HUVEC. Conclusion The culture supematants of PBMCs from patients with active SLE can induce the expression of vascular cell adherin molecules and promote the adherin of T lymphocytes, which may in turn mediate the development of lupus vasculitis.
5.Analysis on the treatment of 42 cases of glaucoma with compound trabeculectomy combined with activating blood circulation and promoting diuresis Chinese medicine
Zhihui CHU ; Li ZHANG ; Lieying YANG
International Journal of Traditional Chinese Medicine 2011;33(3):206-208
Objective To observe clinical effect of treating glaucoma with compound trabeeuleetomy combined with activating blood circulation and promoting diuresis Chinese medicine. Methods 42 cases with glaucoma were randomly divided into two groups by means of random number table. The control group was treated with compound trabeculeetomy, and the treatment group was treated with Chinese medicine after compound trabeeuleetomy. The regular reexamination was performed, and follow-up visit was executed for an average of 12 months. Results Compared with the control group, the postoperative vision in the treatment group increased significantly (λ2=4.511, P<0.05) , and intraocular pressure decreased significantly (λ2=3.638,P< 0.05); The rate of anterior chamber in the treatment group was lower than that of the control group(λ2=4.256 P< 0.05) . Both groups had filtering bleb, and the rate of non-functional filter blebs in the treatment group was lower than that of the control group (λ2=3.054, P< 0.05 ) . Conclusion The therapy of compound trabeculectomy combined with Chinese medicine on glaucoma was better than compound trabeculeetomy only.
6.Expression and significance of T-bet in experimental autoimmune uveoretinitis
Liqun CHU ; Peizeng YANG ; Bing LI
Chinese Journal of Ocular Fundus Diseases 2001;0(03):-
Objective To investigate the expression and significance of T-bet in experimental autoimmune uveoretinitis (EAU). Methods EAU was induced in 24 Lewis rats by immunization with retinal S-antigen (50 ?g) and complete Freund′s adjuvant, and another 4 rats were the healthy control. The rats with EAU were executed 7, 12, 15, 21 days after immunization, respectively. Immunohistochemical single and double staining were performed using monoclonal antibodies of T-bet or CD4 on the ocular wholemounts and the consecutive sections of the eye and spleen from both 24 immunized Lewis rats and 4 normal controls. The positive cells were counted under the optic microscope and the data were analyzed by SPSS 11.0 statistic software. Results A few T-bet positive cells were observed in the normal ocular tissues and spleen. The expressions of T-bet in the iris, retina, and spleen increased 7 days after immunization, reached the peak at the 15th day, and decreased at the 21st day, which were higher than those in the control. Double staining on the consecutive sections revealed that most of the T-bet positive cells were positive for CD4 monoclonal antibody. Conclusion T-bet may affect the occurrence of EAU by activating Th1 cells.
7.Expression of T cell receptor V_?8.3 gene in rats with experimental autoimmune uveoretinitis
Rui ZHANG ; Peizeng YANG ; Liqun CHU
Chinese Journal of Ocular Fundus Diseases 2001;0(03):-
Objective To investigate the expression of T cell receptor (TCR) V ?8.3 gene on CD4+ T lymphocytes in the rats with experimental autoimmune uveoretinitis (EAU). Methods Eighteen Lewis rats were divided into EAU, complete Freund′s adjuvant, and the control group. Interphotoreceptor retinoid-binding protein (IRBP) R16 peptide was synthesized using Fmoc procedure for induction of EAU. Magnetic absorption cell sorting (MACS) method was used to isolate the CD4+ T lymphocytes from the spleen of the rats. Flow cytometry was used to monitor the efficiency of isolation. The expression of TCR V ?8.3 gene segment on CD4+T lymphocytes was determined by fluorescent quantitative polymerase chain reaction. Results EAU was successfully induced in the Lewis rats immunized with IRBP R16 peptide. The proportion of CD4+ T lymphocytes isolated by means of MACS was statistically higher than that before isolation (P
8.Effects of Quyu Xiaoban Capsule on Blood Lipid Level and Platelet Activity in Coronary Heart Disease
Yuxia ZHAO ; Jing YANG ; Zhonghua CHU
Journal of Guangzhou University of Traditional Chinese Medicine 2001;0(03):-
To explore the effects of Quyu Xiaoban Capsule (QXC) on blood lipid level and platelet activity in coronary heart disease (CHD).A randomized single blinded trial was adopted in 62 cases of CHD. Thirty one cases (control group) were treated with routine western medicine and the rest (QXC group) with QXC added. Serum levels of total cholesterols (TC), triglycerides (TG), high density lipoprotein cholesterol (HDL C) and platelet-activating ? granule membrane protein (GMP 140) were detected before and after treatment.After ten weeks of treatment, GMP 140, TC and TG levels were decreased to various degrees in QXC group, the differences being significant as compared with those in control group and those in QXC group before treatment (P0 05).[Conclusion]QXC can decrease the blood lipid level and improve platelet activity and has a certain effect in preventing and treating CHD.
9.Biodistribution of 99 Tcm O-labeled MAG3-2-nitroimidazole hypoxia imaging agents with different spacers in S180 scarcoma-bearing mice
Lei MEI ; Zhi YANG ; Taiwei CHU
Chinese Journal of Nuclear Medicine and Molecular Imaging 2017;37(1):25-30
Objective To evaluate the hypoxia selectivity of 99 Tcm O?labeld MAG3?nitroimidazole complexes with different spacers. Methods Four kinds of 99 Tcm O?labeled MAG3?2?nitroimidazole hypoxia imaging agents with different spacers were synthesized and radiolabeled. The stability and lipid solubility of BzMAG3?2NIEA(1), BzMAG3?2NIPA(2), BzMAG3?2NIHA(3) and BzMAG3?2NIUA(4) were measured. The uptake was investigated by biodistribution experiment using S180?bearing mice. Two?sample t test was used for statistical analysis. Results All 4 99 Tcm O?MAG3 complexes were stable and negatively charged, showing an increasing trend in fat solubility with the increase of spacer length. In biodistribution study, tumor uptake of 99TcmO?1 and 99TcmO?2 with medium? and short?carbon chain were (0.67±0.18) and (0?65±0.18) %ID/g 2 h post injection, which were (0.19±0.03) and (0.39±0.05) %ID/g for 99TcmO?3 and 99TcmO?4 with long?carbon chain (t=2.78-5.88, all P<0.05). Conclusion Molecular structure of spacers has a significant effect on the physicochemical properties and tumor targeting of 99 Tcm O?labeled MAG3?2?nitroimidazole hypoxia imaging agents, such that the medium?and short?carbon chain spacers show the best hypoxia?selective property.
10.Development of Sen's Capabilities Approach and Its Application in Health Economics
Jian ZHU ; Chengshan CHU ; Shanfa YANG
Chinese Health Economics 2017;36(3):5-7
Amartya Sen's capabilities approach was deeply favored by academic comnmunity since developed.Martha Nussbaum had made great contribution on the implementation of capabilities approach.The capabilities approach was emphasized and analyzed by many foreign health econometrists,which had great value of application in health field.It briefly discussed the development of capabilities theories and described the application of capabilities approach in health economics.