Cardiomyopathy, Dilated ; Cardiomyopathy, Hypertrophic ; genetics ; Humans ; Mutation

Arrhythmogenic Right Ventricular Dysplasia ; complications ; Autopsy ; Cardiomyopathy, Hypertrophic ; complications ; Cause of Death ; Coronary Disease ; complications ; Coronary Vessel Anomalies ; complications ; Death, Sudden, Cardiac ; etiology ; pathology ; Humans

Arrhythmias, Cardiac ; Humans ; Potassium Channels, Voltage-Gated ; genetics

Cardiomyopathy, Dilated ; genetics ; Lamin Type A ; genetics

Objective To investigate the epidemiologic factors associated with the age of natural menopause and menopausal symptoms in a large population at age of 40 to 65 years in Jiangsu Province.Methods From May 2010 to Oct.2011,a total of 20 275 women (40 to 65 years) attending health examination in Jiangsu Province were enrolled in this cross-sectional study.A structured questionnaire was used to collect data of demographics,menopausal status,chronic diseases,reproductive history.Also the menopausal symptoms were evaluated by Kupperman menopause index (KMI).Cox proportional hazards regression model and Logistic regression were performed to identify risk factors for earlier age of natural menopause and menopausal symptoms,respectively.Results The overall median age at natural menopause in Jiangsu women was 50 years.Lower educational level,poor economic status,lower body mass index (BMI),age at menarche less than 14 years,nulliparity and smoking were associated with earlier onset of natural menopause (P ＜ 0.05).The most frequently symptoms in perimenopausal women were fatigue (46.84％,1880/4014),insomnia (44.67％,1793/4014) and muscle/joint pain (43.80％,1758/ 4014),while sexual problems (57.06％,3463/6070),muscle/joint pain (53.30％,3235/6070) and insomnia (51.03％,3097/6070) were predominant symptoms in postmenopausal women.After adjusting for confounding factors,it was revealed that women with poor educational background,low income,divorce,higher BMI,higher parity,and smoking presented positive correlation with menopausal symptoms (P ＜ 0.05).Conclusions The study suggested that an estimate of median age at natural menopause were 50 years in Jiangsu women.The main factors contributing to earlier onset of menopause and menopausal symptoms were lower educational level,poor economic status,and smoking.Moreover,there were different menopausal symptoms between perimenopausal and postmenopausal women,which provided the important insights for physicians to prevent and treat menopause symptoms in their clinical practice.

Objective To evaluate the embolic effect on rabbits arteries using self-made copper plated platinum coil.Methods 1 7 New Zealand Big Ear Rabbits were selected.Unilateral subclavian artery or carotid artery was embolized with self-made secondary level copper plated platinum micro-coils (experimental group)through 3F-catheter.Contralateral subclavian artery or carotid artery was also embolized using secondary level platinum micro-coils (control group)as a control.The level of serum copper ions and the liver and renal function were recorded during different intervals before and after embolization.The arteriography and the tissue his-tology were observed respectively during different intervals after the embolization.Results 1 5 of 1 7 rabbits were embolized success-fully.After embolization,the level of serum copper ions increased in 2 weeks(P <0.05).However,it returned to preoperative level after 4 weeks (P >0.05).The liver and renal function was similar to that of the preoperation after 2 weeks.After embolization,an-giography showed that vascular embolization effect between two groups was not significantly different at 10 min and 30 min;howev-er,the embolization effect of experimental group was superior to that of control one (P <0.01)at 3 days and 1 week,2 weeks,4 weeks,6 weeks and 12 weeks.Pathological results showed that there were a lot of thromboses inside,outside and around the copper coil.Few thromboses appeared around platinum coil in control group.The thrombosis situation in experiment group was better than that in control one (P <0.01).However,no significant difference in inflammatory cell infiltration between two groups was found. Conclusion Self-made secondary level copper plated platinum coil has good physical property,rememorability,flexibility and con-trollability.

OBJECTIVEThe purpose of this study was to explore the relationship between originate and breakout and radiofrequency catheter ablation strategy in patients undergoing radiofrequency ablation for premature ventricular contractions originating from the aortic sinus cusp (ASC) using 3-dimensional electro anatomic mapping.

METHODSThis study included 21 consecutive patients (10 male) underwent ablation for frequent PVCs originating from ASC in our hospital between May 2009 and February 2012. Electro anatomic mapping and ablation of right ventricular outflow track (RVOT) and left ventricular outflow track (LVOT) were performed with the 7F 4-mm-tip ablation catheter from right femoral vein and artery. Activation mapping and pacing mapping were performed in all patients.

RESULTSAblation was successful in all 21 patients successful ablation target in left coronary sinus cusp (LCC, n = 17), in right coronary sinus cusp (RCC, n = 2) and in noncoronary sinus cusp (NCC, n = 2). Seven patients showed a RBBB morphology (group A) and 14 patients showed a LBBB morphology (group B). In group A, earliest ventricular activation (EVA) was recorded 22 - 34 (27.4 ± 4.6) ms earlier before QRS at the site of catheter ablation in ASC. In group B, EVA was later in RVOT than that in ASC in 5 patients and EVA at the site of catheter ablation in RVOT and ASC was 22 - 28 (25.2 ± 2.7) ms and 26 - 40 (32.8 ± 5.2) ms, respectively (t = -3.6, P = 0.024) while EVA was earlier in the remaining 9 patients and EVA recorded in RVOT and ASC was 22 - 38 (28.7 ± 5.9) ms and 18 - 28 (22.7 ± 3.6) ms, respectively (t = 3.8, P = 0.005).

CONCLUSIONPatients with premature ventricular contractions originating from the ASC often show preferential conduction to the RVOT, which may explain the LBBB morphology of ECG in these patients.

Adult ; Aged ; Bundle-Branch Block ; etiology ; pathology ; physiopathology ; Catheter Ablation ; methods ; Electrocardiography ; Female ; Humans ; Male ; Middle Aged ; Sinus of Valsalva ; physiopathology ; Ventricular Premature Complexes ; complications ; pathology ; physiopathology ; Young Adult

BACKGROUNDMutations in the lamin A/C gene (LMNA) may cause familial dilated cardiomyopathy (dilated cardiomyopathy) characterized by early onset atrio-ventricular block (A-V block) before the manifestation of dilated cardiomyopathy and high risk of sudden death due to ventricular arrhythmia, which is very similar to the phenotype of gap junction related heart disease. This study aimed to determine the expression and localization of connexins in neonatal myocytes transfected with wild-type (WT) or mutant LMNA to elucidate how these mutations cause heart diseases.

METHODSWe studied the connexin 43 (Cx43) and connexin 40 (Cx40) expression in cultured neonatal myocytes transfected with wild-type (WT) or mutant LMNA (Glu82Lys (E82K) and Arg644Cys (R644C)) using confocal imaging and Western blotting analysis.

RESULTSCx43 protein expression was reduced by 40% in cells transfected with LMNA E82K than that in cells transfected with WT LMNA cDNA. Confocal imaging showed that the Cx43 located inside the cells by LMNA E82K. By contrast, LMNA E82K mutation had no effect on expression and localization of Cx40. LMNA R644C transfection did not show any significant effects on gap junctions at all.

CONCLUSIONSOur findings suggest that LMNA E82K significantly reduced the Cx43 expression and altered its localization which may be one of the pathological mechanisms underlying LMNA-related heart disease.

Animals ; Atrioventricular Node ; pathology ; Blotting, Western ; Cardiomyopathy, Dilated ; metabolism ; pathology ; Cells, Cultured ; Connexin 43 ; metabolism ; Connexins ; metabolism ; Fluorescent Antibody Technique ; Gap Junctions ; metabolism ; Humans ; Lamin Type A ; genetics ; physiology ; Mutation ; Rats ; Transfection

Age Factors ; Animals ; Atrial Fibrillation ; etiology ; Atrial Function ; physiology ; Dogs ; Female ; Male ; Refractory Period, Electrophysiological ; physiology

OBJECTIVETo explore the electrocardiogram and 3-dimensional electroanatomic mapping features and radiofrequency catheter ablation efficacy of patients with premature ventricular contractions (PVCs ) originating from His bundle region.

METHODSBetween February 2009 and February 2011, 10 consecutive patients ( 4 male, aged from 19 to 59 years) who underwent ablation for frequent PVCs originating close to His bundle region in our department were included. Electroanatomic mapping of RVOT and ASC, ablation was performed with the 7F 4-mm-tip ablation catheter.

RESULTSAmong these 10 patients with PVCs originating from His bundle region, 6 originated from the RVOT, 1 from NCC and 3 from RCC. Eight patients showed LBBB morphology,1 patient with PVCs originated from RCC and 1 patient with PVCs originated from NCC showed RBBB morphology. At the successful ablation sites, local ventricular activation v wave was detected 22-52 (32.6 ± 10.2) ms earlier than the QRS wave in the surface electrocardiogram. The distance between target and His bundle was 5.0-8.4(7.0 ± 1.1)mm. Ablation was successful in all 10 patients without complications (PVCs < 500 beats/24 h post ablation).

CONCLUSIONPVCs originating near the His bundle have similar electrocardiographic and electrophysiological characteristics for PVSc originated from the RVOT or ASC. Because of the close anatomical relationship between RVOT and ASC, it is necessary to mapping both RVOT and ASC to accurately identify the site of PVCs origin and to guild successful ablation.

Adult ; Bundle of His ; surgery ; Catheter Ablation ; methods ; Female ; Humans ; Male ; Middle Aged ; Treatment Outcome ; Ventricular Premature Complexes ; surgery ; Young Adult