1.Cardiac functional affection by bone marrow stem cell transplanting after myocardial infarction
Qing ZHOU ; Congxin HUANG ; Ruiqiang GUO
Chinese Journal of Ultrasonography 1993;0(02):-
ObjectiveTo observe the rabbit cardiac siz e and cardiac function change before and after bone-marrow stem transplanting(BMST) by echocardiography.MethodsThirty-four rabbits were divided into 3 groups randomly: group control, group myocardial infarction(MI) and group BMST. The left anterior coronary artery in group MI and group BMST were ligated to produce the myocardial infarction model and injected bone-marrow stem cell to the infracted area in the later group. The size and the systolic function of the heart were measured before and after infarction and transplantation. The left ventricular systolic pressure (LVSP) and the end-diastolic pressure(LVEDP) were also measured in the 3 groups at the end of experiment. ResultsThe left ventricle diameter of group BMST was smaller than that of the group MI, and the ventricular function increased, and almost reached the normal level. And more, LVSP increased and LVEDP decreased statistically in the group BMST. ConclusionsBone-marrow stem transplantation can release the enlargement of left ventricle and improve cardiac function after myocardial infarction.
2.Heterogeneity of EGFR mutations in non-small cell lung cancer
Longhua GUO ; Yilong WU ; Qing ZHOU
Cancer Research and Clinic 2012;24(9):577-579,588
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKI) have shown great efficacy in the treatment of non-small cell lung cancer (NSCLC) patients with EGFR-mutation positive tumors.However,the response to EGFR-TKI is quite different even in EGFR-mutation positive patients.Besides that,different lesions in same patient can also show different response to EGFR-TKI.These phenomena might be associated with the heterogeneity of EGFR mutations,which involves intratumoral heterogeneity,intertumoral heterogeneity,and the heterogeneity before and after treatment.The article introduces the advance in heterogeneity of EGFR mutations from these three aspects.
3.Progress in the personalized medicine using pharmacometabonomics.
Qing HUANG ; Ji-ye A ; Guo-Hua ZHOU
Acta Pharmaceutica Sinica 2014;49(11):1491-1497
Pharmacometabonomics, as an emerging branch of system biology, has been increasingly used in personalized medicine and showed broad prospects. By means of metabonomics, the complicated and detailed metabolic profile of the patient is described, thus providing more detailed description of the disease phenotype. With this understanding, response of different individuals to the drugs are predicted or evaluated through inherent genetic information of the individual combined with the environmental factors. As a result, appropriate drugs and dosage are chosen, which greatly promotes the realization of the individualized therapy goals. This article describes the emerging field of pharmacometabonomics, and the research results of personalized medicine based on the pharmacometabonomics in recent years are reviewed in detail.
Humans
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Metabolome
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Metabolomics
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Pharmacogenetics
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Precision Medicine
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4.Quantitative evaluation of the left ventricular systolic dyssynchrony and its significance in patients with heart failure after myocardial infarction by real-time three-dimensional echocardiography
Qing DENG ; Qing ZHOU ; Limin ZHU ; Jinling CHEN ; Ruiqiang GUO
Chinese Journal of Ultrasonography 2010;19(8):662-665
Objective To quantitatively assess the left ventricular systolic dyssynchrony in patients with varied degrees of chronic congestive heart failure after old myocardial infarction(OMI) by real-time three-dimensional echocardiography(RT-3DE) and investigate the clinical value of the systolic dyssynchrony index(SDI). Methods Forty patients with congestive heart failure after OMI (infarction group) were divided into the severe dysfunction group (LVEF ≤35 %) and the mild dysfunction group (35 % < LVEF<50%) ,and 30 normal subjects served as the control. RT-3DE was performed on all subjects to obtain the 17-segmental time-volumetric curves and global systolic function. SDI changes in above groups and the correlation between SDI and LVEF were analyzed. Results The SDI of the infarction group was significantly higher than that of the normal control group ( P <0. 01 ). The SDI of the severe dysfunction group was significantly higher than that of the mild group (P<0.01). SDI and LVEF were negatively correlated ( r = -0.84, P <0. 01 ). The dyssynchrony rate in the infarction group was 85 %,in the severe dysfunction group was 100%, in the mild group was 75%. Conclusions Left ventricular systolic dyssynchrony is prevalent in patients with OMI, and it is negatively correlated with the LVEF. SDI is a sensitive indicator in assessing left ventricular systolic dyssynchrony. RT-3DE has a unique advantage in the evaluation of the left ventricular systolic dyssynchrony,especially in the patients with myocardial infarction.
5.Prediction and location of coronary artery severe stenosis by longitudinal strain imaging diastolic index
Tuantuan TAN ; Qing ZHOU ; Hongning SONG ; Juan GUO ; Ruiqiang GUO
Chinese Journal of Ultrasonography 2014;23(9):751-756
Objective To evaluate the value of selecting and locating coronary artery severe stenosis by the segmental longitudinal strain imaging diastolic indexes (LSI-DI).Methods 94 subjects with left ventricular ejection function (LVEF) ≥50% and without regional wall motion abnormalities (RWMA) were divided into A group (coronary artery sever stenosis),B group (coronary artery light or mid stenosis) and C group (normal control) using coronary angiography.Some indexes were measured such as early diastolic mitral annulus velocity of septum (e),diastolic peak flow velocity of mitral valve (E,A) and E/e ratio.Using two-dimensional speckle tracking,indexes were measured such as segmental peak systolic longitudinal strain (PSLS),segmental longitudinal strain imaging diastolic indexes (LSI-DI) and global peak systolic longitudinal strain (GPSLS),global longitudinal strain imaging diastolic indexes (GLSI-DI).Compared these indexes among the three groups,the most valuabe segments were obtained and the optimal values were found out by ROC curve.Results There were no significant differences about GPSLS among the three groups.Coronary artery severe stenosis group were significantly lower than the other two groups on GLSI-DI (P <0.05);GLSI-DI of B group was lower than that of normal control group but the difference was not significant(P >0.05).The optimal cutoff values of LSI-DI were 45.5% in the middle anteroseptal segment for detecting left anterior descending (LAD) artery severe stenosis (sensitivity 81.8%,specificity 84.2%),44.8% in the basal anterolateral segment for detecting left circumflex (LCX) artery stenosis (sensitivity 87.3%,specificity 85.3%),and 48.3 % in the basal inferior segment for detecting right coronary (RCA) artery stenosis (sensitivity 79.6%,specificity 86.9 %).Conclusions Patients with coronary artery severe stenosis can be screened by LSI-DI among patients with LVEF ≥50% and without RWMA through conventional echocardiography.The middle anteroseptal segment,the basal anterolateral segment and the basal inferior segment can better locate the branches of coronary artery severe stenosis and the cutoff values were separately 45.5 %,44.8 % and 48.3 %.
6.Preliminary study of salivary gland mass qualitative diagnosis with contrast-enhanced ultrasound
Jiamei GOU ; Qin CHEN ; Guo ZHOU ; Qing ZHOU ; Yingxian LIU
Chinese Journal of Ultrasonography 2013;(2):141-144
Objective To investigate the qualitative diagnosis of salivary gland mass with contrastenhanced ultrasound(CEUS).Methods The CEUS manifestations in 78 cases with salivary gland mass were observed after intravenous bolus injection with contrast agent SonoVue and confirmed by histology.Results Among 78 salivary gland masses,there were 29 cases with pleomorphic adenomas (37.2%),19with Warthin's tumors (24.4 %),7 with basal cell adenomas (8.9 %),and 11 with the other benign masses (14.1%),12 with malignant tumors (15.4%).The intensity of contrast-enhanced masses,whether the enhanced mass margin was clear,whether the peripheral enhancement rim was complete and whether the mass was enlarged were the diagnostic criteria to differentiate the benign and malignant tumors.The accuracy,the sensitivity,specificity,positive predictive value and negative predictive value were 87.2%,95.2%,56.3%,89.4%,75.0% respectively,and the results also displayed positive likelihood ratio and negative likelihood ratio were 2.178,0.085 respectively.Although they presented with the highest incidence among benign tumors,their CEUS manifestations showed remarkable statistical differences when the pleomorphic adenoma was compared with Warthin' s tumor and basal cell adenoma respectively in enhancement intensity(P <0.01) while there were no statistical differences between Warthin's tumors and basal cell adenomas (P >0.05).Conclusions CEUS manifestations of salivary gland mass were helpful to the differential diagnosis of various salivary gland tumors.
7.Application of color Doppler ultrasonography in differentiating restrictive cardiomyopathy and constrictive pericartiditis
Liming ZHOU ; Ruiqiang GUO ; Qing ZHOU ; Al ET
Chinese Journal of Ultrasonography 2003;0(05):-
Objective To assess the clinical diagnostic value of color Doppler ultrasogography in restrictive cardiomyopathy and constrictive pericarditis.Methods Observing mitral valvular, tricuspid valvular, pulmonary and hepatic venous flow in 16 cases of restrictive cardiomyopathy (RCM) and 20 cases of constrictive pericardities (CP), getting the spectrum results of above, analysis was made on the spectrum change accompanied with respiration. Twenty cases of normal served as control. Results Both during inspiration and expiration, the maximal peak velocity and time (E M and E T) of mitral and tricuspid valvular in group constrictive pericardities had statistical difference compared with normal group (P
9.Detection different coronary artery stenosis by integrated backscatter combined with dobutamine stress echocardiography
Qing ZHOU ; Ruiqiang GUO ; Jinling CHEN ; Lan LIU ; Lidan HAO
Chinese Journal of Ultrasonography 2003;0(07):-
Objective To investigate whether the sensitivity and specificity of detecting different coronary artery stenosis could be improved by cyclic variation of integrated backscatter(CVIB) under dobutamine stress echocardiography (DSE).Methods Thirty-two patients with suspected coronary artery disease underwent DSE before selected coronary angiography.CVIB of the left ventricular myocardial segments supplied by three coronary branches was analyzed at the baseline and the stages of DSE.Results Comparing with the value of baseline and low dose stages,in ischemic myocardium,CVIB decreased under high dose.While in non-ischemic myocardium,CVIB showed no difference at all stages of DSE.Taking CVIB
10.Clinic study of strain rate and dobutamine stress echocardiography in the diagnosis of coronary heart disease
Ruiqiang GUO ; Jiaqi HU ; Qing ZHOU ; Lidan HAO ; Jinling CHEN
Chinese Journal of Ultrasonography 1993;0(04):-
Objective To explore the value of strain rate and dobutamine stress echocardiography(DSE) in the diagnosis of coronary heart disease. Methods High-dose DSE was performed in 18 patients with coronary heart disease and 10 healthy persons, proved by selected coronary angiography. Ten patients had single coronary lesion, and the other 8 patients had more. By strain rate technology, systolic peak strain rate(SR_ SYS ) was measured in 12 segments of healthy persons and ischemic segments of patients. Results SR_ SYS of healthy subjects enhanced by the increasement of dose of DSE. In patients with single coronary lesion, SR_ SYS enhanced on the first states of baseline, 10 and 20 ?g?kg -1 ?min -1 ,while SR_ SYS changed non-significantly on 30 ?g?kg -1 ?min -1 , and began to decrease on 40 ?g?kg -1 ?min -1 . However in patients with more than one coronary lesions, SR_ SYS of 10 ?g?kg -1 ?min -1 became larger than that of baseline, while SR_ SYS didn't increase any longer on 20 ?g?kg -1 ?min -1 , and fell significantly on 40 ?g?kg -1 ?min -1 . Conclusions Combining stain rate and DSE to quantify local myocardial motion is valuable to offer many important clinic messages, and improves the diagnosis of coronary heart disease.