Objective To study the relation between vascular endothelial growth factor(VEGF) and the degree of coronary artery stenosis as well as the formation of collateral circulation in patients with acute myocardial infarction (AMI). Methods Seventy-six cases of AMI had undertaken selective coronary angiography on the third to seventh day after admission and also at six months afterwards in order to define the degree of coronary artery stenosis and the presence of collateral circulation. A blood sample of 5 mL was taken in each patient before the first coronary angiography to test for the level of VEGF by enzyme linked immunosorbend assay. Results The level of VEGF in patients with coronary artery stenosis less than 50%, 50%~75% and greater than 75% were (97.6?17.3) ng/L, (241.6?28.9) ng/L and (391.7?48.4) ng/L respectively (P

Objective To evaluate left ventricular systolic synchronicity in patients with dilated cardiomyopathy by V-plane imaging and compare with clinical commonly used tissue Doppler imaging (TDI),evaluate the relevance and consistency between these two parameters.Methods 20 patients diagnosed with DCM and 20 healthy controls were enrolled,2D images,V-plane imaging and TDI waveform were acquired.Time to peak velocity of left ventricular 12 segments were measured by TDI and the standard deviation (TDI_SD) were calculated.Displacement time to peak were measured by V-plane and the standard deviation (V-plane_SD) were calculated.Results Compared with control group,TDI_SD and V-plane_SD increased significantly (P ＜ 0.01),TDI time to peak increased and V-plane time to peak decreased significantly(P ＜0.01).In the two group,12 segment time to peak measured by V-plane were significantly higher than TDI(P ＜ 0.01).There was a significant correlation between TDI_SD and V-plane_SD (r =0.925,P ＜0.001).Bland-Altman plot showed that 95％ plots of ratio of TDI_SD and V-plane_SD were among limits of agreement,which was (0.50,1.36).Conclusions Left ventricular systolic synchronicity in DCM patients can be observed by V-plane imaging.V-plane has significant relevance and consistency with TDI,and can overcome the limitations of TDI that 12 segments can not be displayed in the same cardiac cycle.

AIM:To investigate ischemia reperfusion (I/R)-induced proteomic changes in rat skeletal muscle. METHODS: Healthy male Wistar rats were randomly divided into two groups as follows (n=6): sham group and I/R group. I/R of right hind limb was induced by 4 h ischemia followed by 24 h reperfusion. The 2-DE was applied to separate the proteins extracted from skeletal muscle tissue at the end of experiment, followed by Coomassie Brillant blue R-250 staining. Computer image analysis was used to determine the differential expression of proteins between the two groups, and 7 protein spots expressed differentially were picked out and subjected to in-gel digest and MALDI-TOP for identification. RESULTS: 354?13 proteins were detected and the match rate was (78.7?1.4)%. 10 proteins displayed significant changes after I/R, of which, 6 proteins increased and 3 proteins decreased in expression. Moreover, 2 spots in I/R group were observed, only 1 spots of which in control. 5 proteins were identified after mass spectrometry. Mitochondrial aldehyde dehydrogenase (ALDH) precursor, heat shock 27 kD protein (HSP27), an unnamed protein product (increased in I/R group), ?-actin (decreased in I/R group), and nuclear transport factor 2 (NTF-2) W7a mutant were found in I/R group. CONCLUSION: I/R injury induced differential proteomic changes in rat skeletal muscle. ALDH, ?-actin and HSP27 expression, and NTF-2 mutation are involved in I/R injury.

Malignant mesothelioma(MM) is a rare but highly invasive carcinoma associated with asbestos exposure.Its incidence is in rising trend and most cases occur in pleura and peritoneum.The majority of patients diagnosed at late stage with poor prognosis that the median overall survival is only 12 months.Accurate diagnosis depends on the histopathology combined with immunohistochemistry.At present, the treatment of MM is mainly based on the tumor reduction or resection surgery combined with chemotherapy and radiotherapy.The potential molecular target needs to be further investigated.In this paper, we summary the incidence, diagnosis and treatment of MM, which will benefit the diagnosis and treatment of MM in China.

ObjectiveTo detect the mutation of GJB2 gene in a Chinese family with Vohwinkel syndrome.MethodsClinical data were collected from 5 patients with Vohwinkel syndrome in a family,and blood samples were obtained from the 5 patients and 4 unaffected individuals in the family as well as from 100 normal human controls.Genomic DNA was extracted and subjected to PCR for the amplification of the entire encoding and flanking sequences of GJB2 gene(1015 bp) followed by bidirectional sequencing with the ABI PRISM 3730 automatic DNA sequencer.Finally,sequence alignment was carried out by using the software Sequencher 4.10.1 Demo.ResultsA heterozygous missense mutation 196G→C in the GJB2 gene,which resulted in the substitution of aspartic acid by histidine at codon 66 (D66H) in the first extracellular domain of the protein,was observed in all the patients of this family,but in none of the 4 unaffected individuals in this family or the 100 normal human controls.ConclusionThe D66H missense mutation in the GJB2 gene may contribute to the occurrence of Vohwinkel syndrome in Chinese Han population.

Objective To create a three-dimensional speckle tracking imaging (3DSTI) multiparameter analysis model to improve the diagnostic efficiency of obstructive coronary artery stenosis.Methods One hundred and four patients with chest pain were divided into two groups:coronary heart disease(CHD) group (61 patients) and control group (43 patients) according to the result of selective coronary angiography (SCA).The two groups' clinical data and echocardiographic parameters were aquired,including mitral flow E and A velocities,E peak deceleration time,isovolumic relaxation time (IVRT),mitral annulus velocity e' and a' peak in diastolic and s' peak in systolic by tissue Doppler imaging (TDI),and left ventricular ejection fraction (LVEF).The global longitudinal peak strain (2D-GLPS) by two dimensional speckle tracking,global longitudinal peak strain (3D-GLPS),circumferential peak strain(3D-GCPS),radial peak strain (3D-GRPS) and area peak strain (3D-GAPS) were acquired.Results For conventional parameters,there were no significant difference between the two groups.Compared with control group,TDI e' peak,3D-GRPS decreased,significantly E/e',2D-GLPS,3D-GLPS,3D-GAPS,3D-GCPS increased significantly (P ＜0.01).For single parameter,area under the ROC curve (AUC) were successively 3D-GAPS(0.766) ＞ 3D-GLPS(0.746) ＞ 2D-GLPS(0.746) ＞3D-GRPS(0.727) ＞ s' (0.703) ＞E/e' (0.688)＞3D-GCPS(0.686).AUC for single and multi technology were successively p-Union(0.856)＞p-3DSTI(0.772) ＞ p-TDI (0.757) ＞ p-2DSTI (0.746).Conclusions 3DSTI together with multi-parameter analysis model can significantly improve the diagnostic efficiency of obstructive coronary artery stenosis.Area strain is an independent predictor of obstructive coronary artery stenosis.

The heterologously expressed L1 protein of human papilomavirus 16 can assembly into virus-like particles (VLPs), which has been used as prophylactic vaccine for cervical carcinoma. To express L1 protein in Hansenula polymorpha, we analyzed the codon usage of the native gene of L1 protein and redesigned the encoding sequence according to the codon bias of H. polymorpha. We used assembly PCR to synthesize the native gene HPV16L1-N and the codon optimized gene HPV16L1. The synthesized genes were cloned into pMOXZa-A vector to generate plasmids pMOXZ-HPV16N and pMOXZ-HPV16. The expression cassettes MOXp-HPV16L1(N)-AOXTT were cloned into YEp352 vector and transferred into H. polymorpha. After methanol inducement, the expression of L1 protein in H. polymorpha was detected from the codon optimized gene HPV16L1 rather than the native gene HPVI6L1-N. The parameters for induced cultivation for strain HP-U-16L with HPV16L1 were investigated in shaking flask cultures. After induced cultivation in YPM (pH 7.0) medium supplemented with methanol to a final concentration of 1.0% every 12 h at 37 degrees C for 72 h, the recombinant produced 78.6 mg/L of L1 protein. This work offers the possibility for the production of prophylactic vaccine for cervical carcinoma by H. polymorpha.
Capsid Proteins ; biosynthesis ; genetics ; Cloning, Molecular ; Codon ; genetics ; Genetic Vectors ; genetics ; Human papillomavirus 16 ; genetics ; Oncogene Proteins, Viral ; biosynthesis ; genetics ; Pichia ; genetics ; metabolism ; Recombinant Proteins ; biosynthesis ; genetics

Objective: To investigate the expression of BRCA-associated protein 1 (BAP1) in malignant mesothelioma, non-small cell lung cancer and carcinosarcoma, and its application in the differential diagnosis. Methods: Twenty-two cases of malignant mesothelioma including 17 epithelioid type, 2 sarcomatoid type and 3 biphasic type were collected.As the study control, 80 non-small cell lung cancers infringement pleural membrane(including 40 lung adenocarcinomas and 40 lung squamous cell carcinomas) and 15 carcinosarcomas were included. BAP1 expression was detected using immunohistochemical method. A differential diagnosis antibody panel, including calretinin, WT1, CK5/6, D2-40, CAM5.2, CEA, TTF1, Napsin A, p63 and p40 was tested in all cases. Results: All 80 cases of non-small cell lung cancer and 15 cases of carcinosarcoma were BAP1 positive. In contrast, 64% (14/22) of malignant mesotheliomas lost BAP1 expression (P<0.01). Addition of BAP1 to the mesothelioma marker panel, the diagnostic accuracy of malignant mesothelioma was enhanced to 93%. Focal expression of BAP1 in tumors suggested multiclonal evolution of mesothelioma. Conclusions Loss of BAP1 expression helps to confirm the diagnosis of malignant mesothelioma whereas all non-small cell lung cancer expresses BAP1. It is therefore recommended that BAP1 can be used in conjunction with other immunohistochemical markers to improve the diagnostic accuracy of malignant mesothelioma.

Objective To discuss the ways of fetal membrane early broken and the childbirth,the relations between the maternal infant complication,and the ways to deal. Methods Making the summary and analysis on the 187 examples of fetal membrane broken pregnant woman's clinical material between January,2000 and December,2008 in the hospital I work. Results In 187 examples,there are 8 prematurely delivers(4.28%), 86 difficult labors(45.99%), 24 newborn suffocates(1Z83%) and 6 puerperal infection sign(3.21%). Conclusion The fetal membrane broken have little higher rates of premature delivery and the difficult labor formation and the newborn suffocates, which are dosed to the common maternal infant complication.We should deal with them in proper ways positively to reduces the perinatal maternal infant complication rate.

Objective To compare the sonographic features as well as clinical histopathological features of follicular variant papillary thyroid carcinoma(FVPTC) and conventional papillary thyroid carcinoma (CPTC) in pediatric patients.Methods From Jan.2006 to Dec.2017,26 FVPTC patients and 82 CPTC patients were enrolled in this study.The clinical histopathological findings and the sonographic features were compared between the two groups.FVPTCs and CPTCs were divided into PTC-like and follicular neoplasm(FN)-like based on sonographic characteristics.Results The mean nodule size of FVPTCs was larger than that of conventional PTCs.Extrathyroid invasion and cervical lymph node metastasis did not have significant difference between CPTC and FVPTC patients(53.8％ vs 62.2％ and 76.9％ vs 82.9％,respectively).Multiple nodules(P=0.000)and distant pulmonary metastases(P=0.024) were more frequent in CPTCs than in FVPTCs(P＜0.05).The rate of an ill-defined margin (P=0.000) and calcification (P=0.003)in terms of sonographic features were lower in FVPTCs than conventional PTCs(P＜0.05).A Ⅴ+Ⅵ diagnosis of PTC on FNAC of FVPTCs was less common than that of conventional PTCs (P=0.014).Multifocality(P=0.000),extrathyroidal invasion (P=0.000),and lymph node metastasis (P=0.000) were significantly different between PTC-like FVPTCs and FN-like FVPTCs.Conclusion FVPTC in children and adolescents shows a relatively larger size,more benign sonographic features,and a lower diagnostic rate of PTC by FNAC compared with conventional PTCs in pediatric patients.