Objective To investigate the effect of ligustrazine on the expression of platelet-derived growth factor-?(PDGF-?) receptor and extracellular signal regulated kinase(ERK1/2) induced by angiotensin Ⅱ(AngⅡ) in cardiac myocytes,and explore the mechanism of therapeutic.Methods Cultured cardiac myocytes of neonatal rats were treated with 10-7 mol/L AngⅡ as Ang Ⅱ group,10-7 mol/L AngⅡ plus 10 mg/L ligustrazine as ligustrazine group,the normally cultured neonatal rat cardiac myocytes as control group.Protein synthesis was measured by -leucine incorporation,and the expression of PDGF-? receptor and ERK1/2 was detected by Western blot.SPSS 11.0 software was used to analyze the data.Results There were significant differences among 3 groups(F=20.71 P

Objective To detect genetic alterations in pleomorphic xanthoastrocytoma (PXA), and to investigate the mechanism of development of this neoplasm. Methods Three patients with PXA were studied. Comparative genomic hybridization (CGH) was performed to study chromosomal imbalances in PXA. Using immunohistochemical analysis, the expression of EGFR was detected in PXA. Results Using CGH analysis, genetic imbalance was detected on at least one chromosome for each case. One patient revealed multiple genetic alterations, including gains of 2p14-pter, 4p15-pter, 7p21-qter, 11q24-qter, 12 and 15q14-qter,as well as losses of 8p11.2-pter, 9p11-p23, 10p12-pter, and 13q14-qter. This patient experienced tumor recurrence and died one year later. Gain on Chromosome 7 and loss on Chromosome 8p were demonstrated in 2 of the 3 patients. Immunohistochemically, no EGFR positive reaction was found in all cases. Conclusion Detection of genetic alterations is very important in understanding the pathogenesis of PXA.

AIM: To compare and analyze the stereopsis of intermittent exotropia children under the different backgrounds of dynamic stimuli and static stimuli.
METHODS: We collected 56 children ( male 26, female 30 with intermittent exotropia at the age from 5y to 12y and examined their stereopsis under the different backgrounds of dynamic stimuli and static stimuli using a multidimensional sense perception training software. The differences between the dynamic stereopsis and static stereopsis were compared.
RESULTS: Totally 17 cases ( 30%) had both dynamicstereopsis and static stereopsis, 39 cases ( 70%) had either dynamic or static stereopsis deficit, only 10 cases ( 26%) had dynamic stereopsis, 25 cases ( 64%) static stereopsis left and 4 cases ( 10%) were without any form of stereopsis. The positive rate of dynamic stereopsis was better than the positive rate of static stereopsis, with statistical significance (P<0. 05).
CONCLUSION: Dynamicstereopsis is better than the static stereopsis to intermittent exotropia children.

Thorough excavation and artful utilization of various kinds concrete and invisible learning resources contribute to the cultivation of excellent postgraduates.In postgraduate education of anesthesiology Xuzhou Medical College utilizes time,network,technique platform,research outcome,self-potentiality and clinical patients resources,which produces an active effect and has important instructional significance.

Objective To study the characteristics of event-related potentials P300 in patients with anxiety disorder(AD). Methods P300 tests were carried out in 30 patients with AD and 30 healthy adult controls. ResultsPatients with AD had significantly delayed P3 latency ([326?16] ms vs [339?19]ms, P

China ; Heart Transplantation ; methods ; Humans

OBJECTIVETo investigate the expression of inductive nitric oxide synthase (iNOS) and vascular endothelial growth factor (VEGF), and their relations with clinicopathological parameters in colonic carcinoma.

METHODImmunohistochemistry (streptomycin avidin-biotin peroxidase complex, SP) was used to detect the expression of iNOS, VEGF, collagen IV, FVIII Ag in colonic adenocarcinoma, and micro vessel density (MVD) was counted.

RESULTSThe positive rates of iNOS and VEGF in colonic carcinoma were 76% and 80% respectively. The MVD in iNOS-positive carcinoma and iNOS-negative carcinoma were 37.0+/- 5.7 and 30.5+/- 4.9. The MVD in VEGF-positive carcinoma and VEGF-negative carcinoma were 39.5+/- 8.5 and 30.7+/- 4.4. The expressions of iNOS and VEGF were positively correlated with MVD. The expression of VEGF was correlated with tumor invasion, differentiation and lymph no de metastasis, but not with patients age,sex and histologic type.

CONCLUSIONThe expression of iNOS and VEGF may play a role in the angiogenesis, metastasis and invasion of colonic carcinoma.

Adult ; Aged ; Aged, 80 and over ; Colonic Neoplasms ; metabolism ; pathology ; Female ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Neovascularization, Pathologic ; Nitric Oxide Synthase Type II ; metabolism ; Vascular Endothelial Growth Factor A ; metabolism

To study the effect of Tibetan medicine Zuotai on the activity, protein and mRNA expression of CYP1A2 and NAT2, three different doses (1.2, 3.8 and 12 mg x kg(-1)) of Zuotai were administrated orally to rats once a day or once daily for twelve days, separately. Rats were administrated orally caffeine (CF) on the second day after Zuotai administration, and the urine concentration of CF metabolite 5-acetylamino-6-formylamino-3-methyl-uracil (AFMU), 1-methyluric acid (1U), 1-methylxanthine (1X), 1, 7-dimethylxanthine (17U) at 5 h after study drug administration was determined by RP-HPLC. The activity of CYP1A2 and NAT2 was evaluated by the ratio of metabolites (AFMU+1X+1U)/17U and the ratio of AFMU/(AFMU+1X+1U), respectively. The protein and mRNA expression of CYP1A2 and NAT2 were determined by ELISA and RT-PCR method, respectively. After single administration of Zuotai 3.8 mg x kg(-1) and repeated administration of Zuotai 3.8 and 12 mg x kg(-1), the activity of CYP1A2 and NAT2 decreased significantly compared with control group and there was no significant difference between other dose group and control group. The protein expression of CYP1A2 was significant lower than that in control group after repeated administration of Zuotai 12 mg x kg(-1), and the mRNA expression of CYP1A2 decreased significantly compared with that of control group after single administration of Zuotai 3.8 mg x kg(-1) and repeated admistration of Zuotai 12 mg x kg(-1), separately. The protein expression of NAT2 decreased significantly compared with that of control group after single and repeated administration of Zuotai 3.8 mg x kg(-1), respectively, and the mRNA expression of CYP1A2 decreased significantly compared with control group after single administration of Zuotai 3.8 mg x kg(-1). This study found that Tibetan medicine Zuotai had significant effect on the activity, protein and mRNA expression of CYP1A2 and NAT2.
Administration, Oral ; Animals ; Arylamine N-Acetyltransferase ; genetics ; metabolism ; Caffeine ; metabolism ; urine ; Cytochrome P-450 CYP1A2 ; genetics ; metabolism ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; Female ; Male ; Medicine, Tibetan Traditional ; RNA, Messenger ; metabolism ; Rats ; Rats, Sprague-Dawley ; Theophylline ; urine ; Uracil ; analogs & derivatives ; urine ; Uric Acid ; analogs & derivatives ; urine ; Xanthines ; urine

Adult ; Appendiceal Neoplasms ; immunology ; pathology ; Dendritic Cell Sarcoma, Follicular ; immunology ; pathology ; Humans ; Immunohistochemistry ; Male ; Proto-Oncogene Proteins c-kit ; analysis ; Receptors, Complement 3b ; analysis

AIMTo study the effect of angiotensin II (Ang II) on platelet-derived growth factor(PDGF) receptor expression in vascular smooth muscle cell(VSMC).

METHODSRestenosis model was established by balloon injury in rat aorta. The morphologic change and level of Ang II were measured at 14th day after operation. The expression of PDGF-beta receptor was detected by Western blot. The cultured VSMC pretreated with or without losartan were treated with Ang II.

RESULTSCompared with sham group, the sections of injured aorta showed marked intimal thickening with large numbers of VSMCs proliferation throughout intima and media, the level of Ang II obviously increased by 78.8% (P < 0.05), the expression of PDGF-beta receptor significantly increased by 83.9% (P < 0.05) at 14th day after operation. The expression of PDGF-beta receptor in cultured VSMC treated with Ang II was higher than that of control group (P < 0.01). The effect of Ang II was inhibited remarkably by pretreatment with losartan.

CONCLUSIONAng II can stimulate PDGF receptor expression in VSMC, it may be an important mechanism of Ang II-induced VSMC proliferation.

Angiotensin II ; pharmacology ; Animals ; Aorta ; cytology ; pathology ; Cells, Cultured ; Male ; Muscle, Smooth, Vascular ; drug effects ; metabolism ; Rats ; Rats, Wistar ; Receptors, Platelet-Derived Growth Factor ; metabolism