Objective To study the effect of interventional treatment of iliac and femoral vein stenosis concomitant with deep venous thrombosis. Method Fifty-three patients were divided into 5 groups. In group A after placing into inferior vena cava a filter,11 patients adopted Amplatz Trombectomy Device for thrombolysis or ORSIS thrombolysis and persistent thrombolysis through popliteal vein. In group B thrombus was taken out through guiding catheter and then persistent thrombolysis through popliteal vein after placing into inferior vena cava filters in 9 cases. In group C 13 patients adopted persistent thrombolysis through femoral arteries. In group D 8 patients received persistent thrombolysis through popliteal vein. In group E persistent thrombolysis through foot veins was carried out in 12 patients. Seventeen patients received implanted stents and balloon-expansion in iliac and femoral veins. Results Symptoms disappeared in 26 patients(49.0%), significantly improved in 21 patients (39.6%), improved in 3 patients (5.7%), did not improve in 3 patients (5.7%), respectively. The repatency of iliac and femoral vein was achieved in more than 80% of the 17 patients. Complications developed in 3 cases in the course of thrombolysis. Conclusion The effect of mechanical removal of thrombus, persistent thrombolysis through catheter and transluminal angioplasty is safe and satisfactory.

ObjectiveTo investigate the difference of the spontaneous neuronal activity between attention-deficit hyperactivity disorder (ADHD) and normal children with amplitude of low-frequency fluctuation (ALFF) of the resting-state fMRI,and to discuss the correlation between the activity level of brain and symptom severity.MethodsThirty-two children with ADHD of school age and thirty age-and gender-matched controls were experienced with resting-state fMRI scans while blood oxygenation level dependent (BOLD) signal was acquired to calculate the amplitude of low-frequency fluctuation (ALFF).Linear correlations were performed between the aggregate score of RS-Ⅳ and ALFF voxels in ADHD patients.ResultsCompared to the controls,the ADHD group exhibited decreased ALFF in right superior frontal gyrus ( BA9,t =- 4.61 ),left superior medial frontal gyrus ( BA10,t =- 3.63 ),left mediate frontal ( BA46,t =- 4.09 ),and left anterior cingulate cortex ( BA24,t =- 4.02).Meanwhile,it showed increased ALFF in the medial orbitofrontal cortex( BA11,t =3.52 ),right cuneus gyrus ( t =3.93 ),right mediate occipital gyrus ( BA 19,t =3.82),right cerebellum ( BA37,t =3.77),right mediate temporal gyrus( BA37,t =3.76),and left paracentral lobe ( BA6,t =3.77 ).Altered ALFF in left superior medial frontal gyrus(P=0.009,r=0.492)and the right cuneus gyrus(P=0.024,r=0.433) showed correlation with the aggregate score of RS-Ⅳ.ConclusionThe spontaneous neuronal activity decreases in prefrontal cortex and increases in default mode network of ADHD group,the activity level of left prefrontal and right cuneus gyrus is positively correlated with symptom severity.

Objective To investigate the prevalence of influenza virus infections in infants and young children during the pandemic period of 2009 influenza A(H1N1)in Beijing.Methods Throat swabs were collected from children visited the affiliated Children's Hospital to Capital Institute of Pediatrics for influenza-like illness from June 1,2009 to February 28,2010.The specific gene segments of 2009 pandemic influenza H1N1 and seasonal influenza viruses were amplified from samples by real-time RT-PCR recommended by WHO and National Influenza Reference Center of China.Results Out of 4363 clinical samples tested by real-time RT-PCR,the total positive rate of influenza A viruses was 29.3%,including 623(14.3%)identified as 2009 pandemic influenza A(H1N1)and 657(15.1%)influenza A viruses without subtype identity.Among those pandemic influenza H1N1 positive,23 were severe cases with 5 deaths.The ages for 618 pandemic influenza H1N1 infected children with completed information were from 14 days to 16 years.The ratio of male to female wag 1.3:1.Among them,25.2% were patients in age group of 1 to 3 years old and distribution of children in age groups of 3 to 6 years old and 6 to 12 years old were similar(about 30.0%).During the survey period,it appeared only one prevalence wave of pandemic influenza H1N1.The positive rate of pandemic H1N1 increased in September and the peak(36.5%of positive rate)was in November and then declined to 2.7%in February 2010.The data from routine influenza virus surveillance from 20-30 clinical samples collected each week indicated an alternative prevalence of seasonal H3N2,pandemic H1N1 and influenza B during this study period.Respiratory syncytial virus(RSV)became predominant in children after the circulating of pandemic H1N1.Conclusion There was an epidemic of pandemic influenza H1N1 in children in Beijing from June 2009 to February 2010,especially in those of preschool and school aged children.Seasonal influenza viruses and pandemic influenza H1N1 were contributed alternatively.

This study was aimed to establish an experimental mouse model of combined transgenic inhibition of both multifunctional Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) and inward rectifier potassium current (Ik1), and to observe whether the specific inhibition of both CaMKII and Ik1 can bring about any effects on cardiac remodeling. Mice were divided into 4 groups: wild type (WT), CaMKII inhibited (AC3-I), Ik1 inhibited (Kir2.1-AAA) and combined inhibition of both CaMKII and Ik1 (AC3-I+Kir2.1-AAA). Mice in each group received electrocardiogram (ECG) and echocardiography examination. ECG in the condition of isoproterenol (ISO) injection was also checked. The whole cell patch clamp technique was used to measure Ik1 and the transient outward potassium current (Ito) from enzymatically isolated myocytes of left ventricle. In the condition of basal status, no significant changes of heart rate, PR interval and QRS interval were observed. No mouse showed ventricular arrhythmias in all of the 4 groups. After ISO injection, each group presented no significant ventricular arrhythmias either. The indexes measured by M-mode (motion-mode) and two-dimensional echocardiography had no significant differences among the four groups. Ik1 in AC3-I group was significantly higher than those in other three groups (P < 0.01) because of the results brought about by CaMKII inhibition. Among the latter three groups, both Kir2.1-AAA group and AC3-I+Kir2.1-AAA group had a significant reduced Ik1 compared with that of WT group, which was due to the Ik1 inhibition (P < 0.01). Ito in AC3-I group was higher than that of the other three groups (P < 0.01), but there were no significant differences in Ito among WT, Kir2.1-AAA and AC3-I+Kir2.1-AAA groups. Thus, combined transgenic myocardial CaMKII and Ik1 inhibition eliminated the up-regulation of Ik1 in CaMKII inhibited mice, and had no effects on cardiac remodeling including heart structure and function as well as arrhythmias at the basic and ISO conditions. The results of this study may provide a basis for the further investigation of combined inhibition of CaMKII and Ik1 in pathogenic cardiac remodeling.
Animals ; Arrhythmias, Cardiac ; Brugada Syndrome ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; physiology ; Cardiac Conduction System Disease ; Disease Models, Animal ; Electrocardiography ; Heart ; physiology ; Heart Conduction System ; abnormalities ; Heart Ventricles ; Isoproterenol ; Mice ; Mice, Transgenic ; Patch-Clamp Techniques ; Potassium Channels, Inwardly Rectifying ; physiology ; Up-Regulation ; Ventricular Remodeling