Objective To investigate the value of radiofrequency catheter ablation(RFCA) on idiopathic ventricular tachycardia(IVT) in children.Methods The treatment efficiency of 35 patients accepting RFCA from March 2000 to February 2006 was analyzed,which was divided into control group and study group,randomly.The target site of IVT was localized by routine mapping in control group,and study group was localized by routine mapping combining doppler tissue imaging(DTI) on the basic treatment.Results Numbers of discharge,X-ray exposure time in study group were shorter than that in control group.There were no significance of radiofrequency energy,achievement rates and relapse rates between two groups.Conclusions RFCA is a safe and effective method on IVT.Children are localized combined with DTI shall decrease numbers of discharge and X-ray exposure time.

Carcinoma, Non-Small-Cell Lung ; metabolism ; pathology ; Cell Membrane ; metabolism ; Cell Nucleus ; metabolism ; Cytoplasm ; metabolism ; Humans ; Lung Neoplasms ; metabolism ; pathology ; Signal Transduction ; TCF Transcription Factors ; metabolism ; Transcription Factor 7-Like 2 Protein ; Wnt Proteins ; physiology ; beta Catenin ; metabolism

Abstract: Objective　To compare the mosquito trapping effect of BG-trap mosquito trap using carbon dioxide versus BG-lure attractant under filed conditions. Methods　In August and September 2020, two areas were set with a distance of 100 m. Two sites were set at each area, and one mosquito trap BG trap was set with a distance of 5 m. Each site was set with different flow of CO2 and different amount of BG-lure attractants. The BG-trap mosquito traps on the same area would exchange positions every other day. The mosquitoes captured by each mosquito trap was collected and classified. and the species, sex and number of mosquitoes captured were recorded and counted. Results　The densities of Aedes albopictus captured by BG+/CO2-and BG-/CO2+were 14 and 31, and that of Culex pipiens pallens were 2 and 16, respectively. The differences were statistically significant (Aedes albopictus, t=-2.675, P<0.05; Culex pipiens pallens, t=-4.873, P<0.05). With BG-lure attractant, the females of Aedes albopictus and Culex pipiens pallens in the CO2+group were 2.6 (25/9.5) and 12.0 (12 /1) times higher than those in the CO2-group, and the differences were statistically significant (female Aedes albopictus, t=-4.119, P<0.01; female Culex pipiens pallens, t=-4.592, P<0.01), suggesting that the most important attractant to female mosquitoes is CO2. With BG-lure attractant, the male Aedes albopictus in the CO2+ group was 3.0 (12/4) times higher than that in the CO2-group, and the difference was statistically significant (male Aedes albopictus, t=-3.284, P<0.01). Without BG-lure attractant, female Aedes albopictus and female Culex pipiens pallens in the CO2 + group were 1.8 (18 / 10) and 15.5 (15.5/1.0) times higher than those in the CO2-group, and the difference was statistically significant (female Aedes albopictus, t=-2.868, P<0.05; female Culex pipiens pallens, t=-5.259, P<0.05). Without BG-lure attractant, the male Aedes albopictus in the CO2+group was 2.0 (9.0/4.5) times higher than that in the CO2-group, with a statistically significant difference (t=-2.508, P<0.05). With CO2, Aedes albopictus and Culex pipiens pallens in the BG + attractant group were 1.4 (43.5/31) and 0.78 (12.5/16.0) times higher than those in the BG-attractant group, and the differences were not statistically significant (Aedes albopictus, t=-0.943, P>0.05 ; Culex pipiens pallens, t=0.709, P>0.05). Without CO2, Aedes albopictus and Culex pipiens pallens in the BG + attractant group were 1.0 (14/14) and 2.0 (2.0/1.0) times higher than those in the BG + attractant group, and the differences were not statistically significant (Aedes albopictus, t=-0.500, P>0.05; Culex pipiens pallens, t=-1.000, P>0.05). Without BG-lure attractant, the densities of female Aedes albopictus captured by adding 0, 1 and 2 parts of dry ice were 10, 17.5 and 18 respectively, and the difference was statistically significant among the three groups (F=3.942, P<0.05). The densities of female Culex pipiens pallens captured were 1, 13 and 18 respectively, and the difference was statistically significant among the three groups (F=13.881, P<0.05). However, there was no significant difference between the capture of female Aedes albopictus and female Culex pipiens pallens by adding 1 part of dry ice and 2 parts of dry ice (female Aedes albopictus, t=0.112, P>0.05; female Culex pipiens pallens, t=-0.540, P>0.05). Without CO2, 10, 10, 9.5 and 1, 1 and 1.5 female Aedes albopictus and Culex pipiens pallens were captured by adding 0, 1 and 2 portions of BG-lure attractants, respectively. There were no significant differences between the three groups (female Aedes albopictus, F=0.120, P>0.05; female Culex pipiens pallens, F=0.477, P>0.05). Conclusions　In the monitoring of BG-trap mosquito trap, the mosquito trapping effect of CO2 is better than that of BG-lure attractant. When the same monitoring effect is obtained, the use of CO2 (100 mL/min) can save the use cost.

OBJECTIVETo observe the effect of composite factors, like long-term high-salt & fat diet and alcohol abuse on blood viscosity and blood pressure in rats, and compare with a model induced by high molecular dextran, in order to build a chronic hyperviscosity aminal model which is similar to human hyperviscosity in clinic and lay a foundation for efficacy evaluation on traditional Chinese medicines.

METHODMale SD rats were randomly divided into the normal group, the high molecular dextran (HMD) group and the high salt & fat and alcohol (HSFA) group. The HMD group was given normal diet and water for 23 day and then 10% HMD through tail vein for 5 days. The HSFA group was fed with high salt and high fat diets every day and alcohol for 20 h x d(-1) for 13 weeks. After the modeling, whole blood viscosity and plasma viscosity were measured in the 5th, 8th and 11th week. Blood pressure was measured in the 5d, 7h, and 10th week. Red cell count (RBC) and hematocrit (HCT) were measured in the 11th week. PAgT, Fb, ET-1, NO, PGI, TXA2 contents of the normal group and the HSFA group were measured in the 13th week, and IECa21 content was measured with flow cytometry. Result: After the modeling, the HMD group was in good conditions with glossy hairs and active behaviors. The HSFA group was depressed with withered hairs and less activities. During the 5th-11th weeks, the HMD group and the HSFA group showed higher values in high and low shear whole blood viscosity (WBV) than the normal control group. The plasma viscosity (PV) of HMD rats was significantly increased only in the 5th week, and that of HSFA rats significantly increased in the 8"' and 11th week, particularly in the 11'h week. In the 111h week, the HSFA group showed significant increases in RBC and HCT. After the modeling, the blood pressure of HMD rats showed no significant changes, but the blood pressure of HSFA rats significantly increased during 7' and 101h weeks, particularly in the 10"' week. In the 13th week, PAgT, IECa2+, Fb, ET-1 of HSFA rats significantly increased, but with decreases in NO and PGI2.

CONCLUSIONLong-term high salt & fat and alcohol diets can cause abnormal blood viscosity in rats. WBV significantly increased since the 5th week in rats, and PV increased since the 8th week. The mechanism for increasing BV may be: (1) increases in RBC, HCT, and IECa2+, (2) PAgT increase, (3) Fb content increase, or (4) TXA2/PGI2, ET-1/NO imbalance. Although the modeling time with the method is longer than that with the HMD method, the model is more stable and moderate, and could lead to abnormal increases in WBV and PV; Whereas the HMD method only induced transient increase in plasma viscosity and abnormal increase in SBP. The model is more similar to traditional Chinese medicine syndromes and pathogenesis, with higher value for studies on efficacy of traditional Chinese medicines.

Alcoholism ; blood ; metabolism ; Animals ; Blood Pressure ; Blood Viscosity ; Diet, High-Fat ; adverse effects ; Disease Models, Animal ; Ethanol ; adverse effects ; metabolism ; Humans ; Male ; Rats ; Rats, Sprague-Dawley ; Sodium Chloride, Dietary ; adverse effects ; metabolism

Vascular endothelial growth factor-D (VEGF-D) and vascular endothelial growth factor receptor-2, -3 (VEGFR-2, -3) with their corresponding signaling pathway play significant roles in the development of the embryonic vascular system and pathological lymphangiogenesis. The study was aimed to express and purify the GST-VEGF-D fusion protein, and to explore the angiogenesis effect of VEGF-D. The total RNA was extracted from human fetal lung tissue, and the mature form of VEGF-D was expanded by polymerase chain reaction (PCR), then the plasmid pGEX-5X-1/VEGF-D was reconstructed and the GST-VEGF-D fusion protein expressed in transformed E.coli BL21-DE3. The results showed that the molecular mass of this fusion protein was 38 kD and compassed more than 15% of the total bacteria proteins. The fusion protein was recognized by anti-GST and anti-VEGF-D antibodies. The soluble GST-VEGF-D fusion protein could interact with VEGFR-3/Fc and was able to stimulate the proliferation of human erythroleukemia cell line (HEL) cells. The data of chick embryo chorioallantoic membrane (CAM) experiments indicated that GST-VEGF-D could induce the CAM angiogenesis. It is concluded that the GST-VEGF-D fusion protein with biological activity was successfully expressed, and which may provide an experimental model for the investigation of the VEGF-D-induced angiogenesis and lymphangiogenesis.
Animals ; Chick Embryo ; Chorioallantoic Membrane ; blood supply ; Humans ; Neovascularization, Physiologic ; drug effects ; Recombinant Proteins ; biosynthesis ; genetics ; pharmacology ; Vascular Endothelial Growth Factor D ; biosynthesis ; genetics ; pharmacology

objecfive To know and compare the intelligence level of children born in different time periods in regions with iodine deficiency disorders(IDD)in Liaoning province.Methods All 7-14 year-old children from ten schools were chosen as the subjects respectively from six villages in each of the six counties and in regions with iodine deficiency,who were respectively born at the initialization of iodinated salt supplying period(1978-1980);non-iodinated salt supplying period(1981-1990);recovery of supplied iodized salt period(1991-1995);universal iodized salt period(1996-2000),respectively.Intelligence quotient(IQ)was measured by Combined Ravens Test in China(CRT-C)and Combined Ravens Test-the Rural,in China,2nd edition(CRT-RC2).Results IQ of children during the non-iodized salt period(91.9±14.3)was significantly lower than the initial supply of iodized salt period(95.8±14.6,q=8.60,P<0.01),recovery of supplied iodized salt period(99.7±14.7)was significantly higher than the initial supply of iodized salt period, non-iodized salt sales period(q = 9.53, 18.13, all P < 0.01 ),universal salt iodization( 104.3 ± 14.9) was significantly higher than the initial supply of iodized salt period, non-iodized salt sales period, recovery of supplied salt iodization(q = 20.00,28.00,10.46, all P < 0.01). Children's rate of mental retardation (IQ≤69) was higher in non-iodinated salt supplying period (6.7%, 88/1314 ) than the initial supply of iodized salt (4.4%, 21/471, χ2 = 3.85, P < 0.05), recovery of supplied iodized salt period(3.3%,48/1470) was significantly lower than non-iodinzed salt supplying period (χ2 = 15.37, P < 0.01), universal salt iodization period(2.7%, 36/1344) was lower than the initial supply of iodized salt period(χ2 = 4.41, P < 0.05) and non-iodinzed salt supplying period(χ2 = 26.34, P < 0.01 ). The IQ and intelligent retarded rates in children born during the initial years of iodinated salt supplying period were not different. The IQ of the children during ten years of non-iodized salt supplying period fluctuated in a "∪" curve, while the intelligent retardation rates in a "∩" curve.The children born during the period of recovery supplied iodized salt increased their IQ and lowered the retardation rates year after year. The IQ of the children in universal iodized salt period kept on increasing while intelligent retarded rates reduced to the lowest level. Conclusions The intelligence level of children born in regions with IDD during non-iodized salt supplying period is remarkably lower than that of the beginning years of iodinated salt supplying period. The intelligence level of children born after universal iodized salt period is remarkably higher than that of the initial iodinated salt supplying period and recovery of supplied iodized salt period, respectively.

OBJECTIVETo examine the association between body mass index (BMI) and mortality as well as the effect of age on it among middle-aged and elderly men in urban area of Shanghai.

METHODSA total of 18,244 male subjects aged 45-64 years resided in urban area of Shanghai were enrolled in the study during January 1, 1986 through September 30, 1989, and were actively followed under annual visits. 'Cox proportional hazards model' was used to estimate the relative risks (RR).

RESULTSBy the end of the follow-up process in 2002, a total number of 235,762 person-years was accumulated in the cohort, with an average of 12.9 years per subject. A total number of 3365 deaths including 1381 from cancer and 1165 from cardio- and cerebro-vascular diseases (CVD), was identified during the follow-up period. Compared with those under normal BMI (BMI 18.5-23.9), the RRs of death for all causes of death among groups at low BMI (BMI < 18.5), overweight (BMI 24-27.9) and obesity (BMI > or = 28) were 1.20, 1.12 and 1.61, respectively, among non-smokers after adjustment for age, alcohol consumption and level of education. After excluding the numbers observed during the first 5 years of follow-up, the corresponding RRs became 1.01, 1.12, and 1.75, respectively. The risk of deaths from colon cancer or CVD increased along with the increase of BMI, while the risk of non-cancer and non-CVD deaths, mostly deaths from infectious diseases, increased significantly in the group of low BMI. Among those aged > or = 55 years at baseline survey, the risk for all causes of death increased more significantly with those having obesity. However, among those who were younger than 55 years of age, no significant correlation between BMI and overall mortality was noticed.

CONCLUSIONA positive relationship between obesity and total mortality was observed in the middle-aged and elderly men in urban Shanghai. The association was more obvious among the elderly while the risk of deaths from colon cancer or CVD rose along with the increase of BMI. The risk of death from infectious disease increased significantly in the group with low BMI.

Aged ; Body Mass Index ; Cardiovascular Diseases ; mortality ; Cause of Death ; China ; epidemiology ; Cohort Studies ; Colorectal Neoplasms ; mortality ; Humans ; Male ; Middle Aged ; Obesity ; epidemiology ; Overweight ; Proportional Hazards Models ; Prospective Studies ; Risk Factors ; Urban Health

OBJECTIVETo prepare monoclonal antibodies (mAbs) against enoyl-CoA hydratase 1 (ECH1).

METHODSNormal human liver tissues were homogenized, and the mitochondria were isolated by differential centrifugation. The total mitochondrial proteins were used to immunize BALB/c mice to prepare mAbs by routine hybridoma technique. The mAbs were characterized by ELISA, Western blotting and immunohistochemistry. The specificity of the antibody was identified by mass spectrometry (MS) following immunoprecipitation (IP) and confirmed by Uni-ZAP expression library screening.

RESULTSOne clone of the hybridoma BGB095 secreting specific mAb against ECH1 was obtained. The mAb was identified to belong to Ig subclass IgG1 and could be used in ELISA, Western blotting, immunohistochemistry, and immunoprecipitation.

CONCLUSIONA hybridoma cell line stably secreting specific mAb against ECH1 has been established. The specific mAb against ECH1 can be of great value for functional and distribution studies of ECH1.

Animals ; Antibodies, Monoclonal ; analysis ; immunology ; Antibody Specificity ; Blotting, Western ; Cell Line ; Enoyl-CoA Hydratase ; immunology ; Enzyme-Linked Immunosorbent Assay ; Humans ; Immunohistochemistry ; Liver ; cytology ; metabolism ; Mice ; Mice, Inbred BALB C ; Mitochondria ; metabolism

OBJECTIVETo investigate the association between cigarette smoking and cancer mortality in urban men in Shanghai and its impact when smoking habit changed during the follow-up period.

METHODSA total of 18 244 male residents aged 45 to 64 years in urban Shanghai were enrolled in the study during January 1, 1986 through September 30, 1989, and was actively followed up on annual visits. Cox proportional hazards model was used to estimate relative risks (RR).

RESULTSBy the end of follow-up program in 2002, 235 762 person-years, averaged 12.9 years per subject in the cohort was reached. 3365 deaths including 1381 cancer deaths were registered during the follow-up period. The mortality rates for cancers of lung, stomach, liver, pancreas, esophagus, head and neck etc. increased significantly among smokers. Compared with data of nonsmokers at the baseline survey, the adjusted RR was 1.49 for all-causes mortality among current smokers at the baseline survey. After excluding subjects who changed their smoking habit during the follow-up period, the RR became 1.78 compared with lifelong-nonsmokers. The corresponding RRs rose from 2.05 to 2.58 for all cancer deaths and from 6.40 to 8.77 for lung cancer deaths. The age-adjusted all-causes and cancer death rates among current smokers at the baseline survey were 1695.6 and 782.0 per 100 000 person-years, respectively. After exclusion of those with smoking habit changed during the follow-up period, the rates among persistent smokers were 2353.7 and 1144.6 per 100 000 person-years, respectively.

CONCLUSIONCigarette smoking is an important predictor for risk of all-causes of death as well as for cancer deaths. The change of smoking habit during the follow-up period could result in underestimating the deleterious effect of cigarette smoking on health.

Adult ; Cause of Death ; China ; epidemiology ; Cohort Studies ; Follow-Up Studies ; Humans ; Liver Neoplasms ; mortality ; Lung Neoplasms ; mortality ; Male ; Middle Aged ; Neoplasms ; mortality ; Proportional Hazards Models ; Prospective Studies ; Smoking ; adverse effects ; Stomach Neoplasms ; mortality ; Urban Health

OBJECTIVETo investigate the method and effect of axial pattern myocutaneous flap in reconstructing breast by using color doppler flow imaging (CDFI) technique.

METHODSSuitable axial myocutaneous flaps were selected according to the character of the focus in 26 cases of breast cancer after operation and radiotherapy. All the axial pattern myocutaneous flaps were designed on the basis of traditional design method before operation; then, CDFI with high resolution was used to examine the starting spot, exterior diameter, trail and length of the myocutaneous flaps' major artery. The myocutaneous flaps were redesigned according to the results of CDFI and transferred to reconstruct the breasts. The results of operation and examination were investigated.

RESULTSAccording to the CDFI, only one thoracodorsal artery's blood current was slow, its wall was rough and presented with arteriosclerosis. The blood flow was fluent and the vessel wall was smooth with other supplying arteries in the flaps. And no embolism, sclerosis or absence of blood vessel was found. The starting spots, exterior diameters, trails and anatomic layers of the major supplying arteries of the flaps were displayed clearly with CDFI, in accordance with the results of operation. Twenty-one cases of latissimus dorsi myocutaneous flap, 4 cases of the contralateral transverse abdominis myocutaneous flap and 1 cases of the bilateral transverse abdominis myocutaneous flap were used in this group. The flaps survived and healed well, the breasts were reconstructed well with perfect appearance, shape and sensation.

CONCLUSIONSCDFI is a simple, visualized and noninvasive method for designing the axial pattern myocutaneous flap in breast reconstruction, it can provide more scientific and accurate evidence for preoperative determination of myocutaneous flap transplantation.

Adult ; Breast Neoplasms ; radiotherapy ; surgery ; Female ; Follow-Up Studies ; Humans ; Mammaplasty ; methods ; Mastectomy ; Middle Aged ; Surgical Flaps ; Treatment Outcome ; Ultrasonography, Doppler, Color ; Ultrasonography, Mammary ; methods