0.05). Conclusion Enough high-purified LECs can be isolated by collagenase digestion procedure followed by immunomagnetic beads sorting. Post-thawed endothelial cells are proved to have high vitality and growth potential in vitro without significant morphological changes. Cryopreserved LECs may serve as a cell choice for research of lymphangiogenesis and lymphatic patterning.

Molecular target-based cancer therapy is playing a more and more important role in cancer therapy because of its high specificity, good tolerance and so on. There are different kinds of molecular targeted drugs such as monoclonal antibodies and small molecular kinase inhibitors, and more than 50 drugs have been approved since 1997. When the first monoclonal antibody, rituximab, was on the market. The development of molecular target-based cancer therapeutics has become the main approach. Based on this, we summarized the drugs approved by FDA and introduced their mechanism of actions and clinical applications. In order to incorporate most molecular targeted drugs and describe clearly various characteristics, we divided them into four categories: drugs related to EGFR, drugs related to antiangiogenesis, drugs related to specific antigen and other targeted drugs. The purpose of this review is to provide a current status of this field and discover the main problems in the molecular targeted therapy.
Angiogenesis Inhibitors ; Antibodies, Monoclonal ; Drug Delivery Systems ; Humans ; Molecular Targeted Therapy ; Neoplasms ; drug therapy ; Protein Kinase Inhibitors ; Receptor, Epidermal Growth Factor ; antagonists & inhibitors

Because of the population aging,the increase of the stroke patients and the need for rehabilitation,the treatment only in the rehabilitation department of the hospital is far from the satisfaction of people's demands of the service of rehabilitation.It is important to extend the community-based rehabilitation.Compared with the rehabilitation in hospitals,it is more economy,efficiency and convenience for stroke patients in community-based rehabilitation services,and further improve the rehabilitation effect of stroke patients.

Objective: To observe the effect of electroacupuncture (EA) pretreatment on the protein expression of c-fos in fastigial nucleus (FN) and lateral hypothalamus area (LHA) in rats with acute myocardial ischemia-reperfusion injury (MIRI), and to explore the role and mechanism of FN and LHA in EA at the Heart Meridian fighting against acute MIRI reaction. Methods: Seventy Sprague-Dawley rats were randomly divided into a sham operation group, a model group, an EA-Heart Meridian group and an EA-Lung Meridian group, with 14 rats in each group; an LHA lesion plus EA-Heart Meridian group (LHA+EA-Heart Meridian group) and a FN lesion plus EA-Heart Meridian group (FN+EA-Heart Meridian group), with 7 rats in each group. Except the sham operation group, the left anterior descending branch of coronary artery was ligated to establish acute MIRI rat models in the other 5 groups. In the three groups with EA-Heart Meridian treatment, Shenmen (HT 7) and Tongli (HT 5) were selected; Taiyuan (LU 9) and Lieque (LU 7) were selected in the EA-Lung Meridian group. All the EA groups received EA stimulation prior to modeling, with 1 mA in current intensity and 2 Hz in frequency, 20 min each time, once a day for a total of 7 d. The sham operation group and the model group did not receive EA stimulation. The electrocardiogram was observed in the rats to analyze the ST-segment deviation and cardiac arrhythmia score. The expression of c-fos protein in FN and LHA was detected by immunohistochemistry method. Results: Compared with the sham operation group, the ST-segment deviation, cardiac arrhythmia score and the expression of c-fos protein in the FN and LHA increased significantly in the model group (all P<0.05). Compared with the model group, the ST-segment deviation, cardiac arrhythmia score and the expression of c-fos protein in FN and LHA decreased significantly in the EA-Heart Meridian group (all P<0.05). Compared with the EA-Heart Meridian group, the ST-segment deviation and cardiac arrhythmia score increased significantly in the EA-Lung Meridian group, LHA+EA-Heart Meridian group and FN+EA-Heart Meridian group (all P<0.05); the expression of c-fos in FN increased significantly in the EA-Lung Meridian group and LHA+EA-Heart Meridian group (both P<0.05); the expression of c-fos in LHA increased significantly in the EA-Lung Meridian group and FN+EA-Heart Meridian group (both P<0.05). Conclusion: FN and LHA are involved in the mechanism of EA at Heart Meridian to improve the acute MIRI reactions, and the cerebellum may participate in the improvement of cardiac function by EA through the cerebellum-hypothalamus projection.

Objective To explore the prognostic value of speckle tracking imaging (STI) for left ventricular remodeling(LVR) in acute myocardial infarction (AMI) patients with the analysis of the relation between regional wall motion abnormality after AMI and LVR by STI in association with wall motion score index (WMSI).Methods Eighty-three patients with first onset AMI were enrolled from January 2012 to May 2015 and underwent echocardiography within 24 h of the onset and at 6-month follow-up.LVR was defined as more than 20％ of the percentage change of left ventricular end-diastolic volume (△LVEDV％) from baseline to 6-month follow-up (divided as LVR and non-LVR group).Standard long-axis and shortaxis views were stored and analyzed for longitudinal (LS),radial (RS) and circumferential (CS) strain of STI metrics as well as scores of WMSI.Segments of WMSI≥2 were selected and calculated for the mean values of LS (LS_WMSI),RS (RS_WMSI) and CS (CS_WMSI).Results LVR occurred in twenty-seven AMI patients at 6-month follow-up.No difference has shown for demographics,electrocardiogram,lab tests,coronary angiography as well as the measurements of two-dimensional echocardiography between the two groups from baseline,while all STI metrics had statistical difference when the comparisons (P ＜0.05,all),especially the WMSI selected STI metrics (P ＜0.001,all).Linear regression analysis demonstrated that CS_WMSI (r =0.716,P ＜0.001) was best correlated to △LVEDV％ among all STI metrics and also the best predictor of LVR by receive operator curve analysis (sensitivity of 92.6％,specificity of 87.5 ％ and area under the curve of 0.9563).Conclusions Baseline STI metrics can precisely predict LVR at 6-month follow-up.Among the STI metrics,CS_WMSI has shown preferable predictive and diagnostic value,which indicates that the impairment of segmental circumferential wall motion is closely correlated to LVR after myocardial infarction.

Objecfive To study the effect of Danhong injection(DI)on intimal hyperplasia and expressions of basic fibroblast growth factor(bFGF)and tissue factor(TF)in carotid arteries of rabbits after percutaneous transluminal angioplasty(PTA). Methods Fifty New Zealand White rabbits were randomly divided into 5 groups (n=10),namely sham-operated group,model group,and DI treatment groups(low-,medium-and high-dose DI treatment groups).The animals in the sham-operated group were only given external carotid artery ligation.The rabbit models of carotid stenosis in the later 4 groups were established by ballon-injury.Before the carotid balloon injury,the animals in the DI treatment groups were given DI at doses of 1 mL/kg·d-1,2mL/kg·d-1 and 4 mL/kg·d-1,respectively,for 7 or 14 d via intravenous injection;the animals in the sham-operated and model groups were given saline solution(2mL/kg·d-1)instead.The animals were sacrificed and their common carotid arteries were removed on the 7th and 28th d of surgery;morphology changes of the arterial wall with hematoxylin eosin staining were observed by optical microscope,and the expressions ofbFGF and TF of the vascular wall were detected through immunohistochemical techniques;with the help of an image analysis system,semiquantitative analysis was performed.Results On the 7th d of surgery,the intimal area and intima area/media area (I/M)ratio in the model group showed no significant differences as compared with those in the other 4groups(P>0.05).On the 28th d of surgery,the intimai area and I/M ratio in the model group were increased markedly as compared with those in the sham-operated group (P<0.05), and the intimal area and I/M ratio in the medium and high dose DI treatment groups were significantly reduced as compared with those in the in the model group (P<0.05). The expressions of TF and bFGF in the neointima of carotid arteries of rabbits treated with medium and high dose of DI were significantly weaker than those of the model group (P<0.05), and those of rabbits treated with low dose of DI had no obvious differences as compared with those of the model group (P>0.05). Conclusion Medium and high dose of DI can inhibit the intimal hyperplasia resulting from percutaneous transluminal angioplasty, might through the inhibition of expressions of bFGF and TF in the neointima of the arterial wall.

Objective To retrospectively analyse the clinical data of off-pump coronary artery bypass grafting surgery(OPCAB)in our department and summarize the clinical experience of peri-operative management.Methods From January 2007 to May 2008,253 patients underwent OPCAB.Seventy-six cases with left main disease(including 18 cases of single left main lesion and 58 cases of complex lesion);13 cases had single vessel disease;32 cases had double vessels disease and 190 cases had triple vessels disease.Eighteen cases received emergency OPCAB.All vessel anastomosis were performed with coronary artery stablizer and shunt through median sternotomy.Resuits Three cases died after operation(1.2%).Intra-aortic balloon pump was used in 11 cases.Mechanical ventilation time was 3-168 h[(24.1±22.3)h],and ICU stay time was 1-14 day[(2.8±2.0)d].Postoperative hospital stay time was 8-42 days[(15.6±6.3)d].Conclusion OPCAB is reliable for most bypass cases.With appropilate peri-operative management,a satisfied result will be acceptable.

Objective To summarize the clinical experiences of 1386 patients undergoing off-pump coronary artery bypass grafting(OPCAB)during Jan 2002 to Mar 2008.Methods OPCAB was done through midsternumtomy under ordinary-temperature anesthesia after radial artery,left breast artery and vena saphena magna were taken.Patients over 70 years old accounted for 32.35%,and the oldest was 99 years old.Emergency and subemergency OPCAB was done in 111 cases,re-do CABG with off-pump technique was done in 52 patients.Results 24 cases died during perioperation,with mortality of 1.73%and all other patients discharged from the hospital.Following operation,the symptoms of angina pectoris were relieved and the life quality was much beaer than that before operation.Conclusion OPCAB is feasible for older patients,who are complicated with other chronic diseases for elder patients.Skillful technique of surgeon,right indications for OPCAB and management of peri-and postoperation are key to success of operation.

OBJECTIVETo isolate and identify nisin resistance determinant (NSR) gene from Lactococcus lactis.

METHODSThe Lactococcus lactis strains harboring NSR gene were isolated from different milk samples by selective culture supplemented with nisin and confirmed by PCR detection of 16S rRNA. Nisin resistance determinant gene was determined by PCR amplification, enzyme digestion and sequencing.

RESULTSThirty nisin-resistant Lactococcus lactis strains from fresh milk samples were obtained. Three of these strains contained NSR gene of about 1000 bp as determined by agarose gel electrophoresis and further confirmed by enzyme digestion and sequence analysis. The NSR gene was located on the plasmid of Lactococcus lactis.

CONCLUSIONComplete NSR gene, located on the bacterial plasmid, has been successfully isolated from nisin-resistant Lactococcus lactis strains from fresh milk.

Animals ; Anti-Bacterial Agents ; pharmacology ; Cattle ; Drug Resistance, Bacterial ; genetics ; Lactococcus lactis ; genetics ; isolation & purification ; Milk ; microbiology ; Nisin ; genetics ; pharmacology ; Plasmids ; genetics ; Polymerase Chain Reaction ; RNA, Ribosomal, 16S ; genetics

Objective To observe the occurrence and risk factors of arrhythmia in chronic kidney disease (CKD) patients in different stages of renal function. Methods A total of 405 CKD patients were enrolled in this study and none of them received renal replacement therapy.The 24 h dynamic electrocardiogram (DCG) was performed,and baseline characteristics were compared.Multivariable Logistic regression analysis was used to examine the relationship between the severe arrhythmia and the potential risk factors,such as age,gender,CKD stage,diabetes,hypertension,hyperpotassaemia,left ventricular hypertrophy (LVH),etc. Results There were 69 patients (17.04％),79 patients (19.51％),82 patients (20.25％),88 patients (21.73 ％) and 87 patients (21.48％) in CKD stage 1,2,3,4 and 5,respectively.As high as 45.68％ of all the patients had severe arrhythmia,represented by 27.54％,29.11％,42.68％,57.95％ and 65.52％ in CKD stages 1-5 respectively.The occurrence of severe arrhythmia increased as the eGFR decreased in CKD stages 2,3,4 (p＜0.05).On multivariable Logistic regression analysis,the occurrence of severe arrhythmia was related to LVH,CKD stage,diaberes hyertension and hyperpotassaemia are signidicantly assoxiated with severe arrhythmia.