Objective To explore the clinical value of two-dimensional speckle tracking imaging (2DE-STI) by measuring global longitudinal strain (GLS) in normal children.Methods Totally 176 normal children underwent cardiac ultrasound examination,the left ventricular GLS were measured,and the difference of GLS between gender was analyzed.And the changes of GLS with body surface area (BSA) and age were discussed.Results GLS had no significant difference between male and female ([-24.90 ± 2.06]％ vs [-24.93 ± 2.01]％,t =0.83,P =0.934).GLS had significant differences among different BSA groups (F=3.84,P =0.003),and the differences of GLS in BSA＞ 1.0 group and the other five groups were statistically significant (all P＜0.05).GLS had statistically significant differences among different age groups (F=4.81,P=0.001),and the differences of GLS in ＞9 years old group and the other four groups were statistically significant (all P＜0.05).Conclusion Left ventricular GLS presents certain regularity with children's growth.

Objective To investigate the clinical spectrum of respiratory viruses in infants and young children with acute lower respiratory infection(ALRI) in Chongqing area from 2003-2007.And to assess the clinical diagnostic value of virus detection in nasopharyngeal secretions(NPS) and serum viral antibody detection for ALRI.Methods Cases of 2 529 specimens of NPS in hospitalized children with ALRI from Apr.2003 to Oct.2007 were taken for detecting 7 common respiratory virus antigens by immunofluorescence assay including respiratory syncytial virus (RSV),adenovirus(ADV),influenza A(IA),influenza B (IB),parainfluenza virus1-3 (PIV1,PIV2,PIV3).Fifty-five thousand eight hundred and eighty-seven samples were tested for ADV-IgM by ELISA.Among those,45 159 cases were further tested for RSV-IgM by ELISA.Results Respiratory virus pathogens were detected in 778 samples out of 2 529(30.76%) including RSV positive in 668 samples (85.86%),PIV3 positive in 75 samples (9.64%),IA positive in 22 samples (2.57%),ADV positive in 15 samples ( 1.93%),only 1 sample ( 0.13%) positive for both PIV1 and RSV. And the positive rate of RSV-IgM was 0.9%-15.2%,and the positive rate for ADV-IgM was about 0.6%-10.6%.RSV infection occured mainly in winter and spring.Conclusions Respiratory virus is the most common pathogen in children with ALRI during the survey period in Chongqing area,especially for RSV infection.The pattern of RSV circulation varied every year with seasonality.It is suggest that this year is peak one for RSV infection from the monthly positive results,especially in Feburary(50%) in 2007.But the infection rate of PIV3,IA,ADV and PIV1 are lower,particularly IB and PIV2 infection have not been seen for the last 5 years.It is fast and accurate to detect RSV antigen and suit to clinical diagnosis by using immunofluorescence assay than other antibody detection.

AMP-Activated Protein Kinases ; metabolism ; Animals ; Male ; Mice ; Mice, Inbred C57BL ; Muscle, Skeletal ; metabolism ; Phosphorylation ; Physical Conditioning, Animal

Behavior Therapy ; Body Composition ; Energy Metabolism ; Humans ; Prader-Willi Syndrome ; metabolism ; therapy

Objective To explore the clinical efficacy and satety of LFK-SLT30 semiconductor laser combined with polidocanol for the treatment of varicose veins of the lower extremities.Methods The clinical data of 105 patients treated by traditional surgery (surgery group) and 113 patients with endovascular laser treatment (EVLT) combined with polidocanol (combination group) were retrospectively analyzed from Apr 2013 to Apr 2015.Results The operative time [(50 ± 12) min vs.(70 ±10)min] and blood loss [(19 ± 6)ml vs.(41 ± 8)ml] between combination group and surgery group were significantly different (P ＜ 0.05).The rate of complications in surgery group was significantly higher than that in the combination group[15.2％ (16/105)vs.6.3％ (7/113),x2 =4.717,P =0.030].The overall 1',2' and 3 year follow-up rate was 85.3％ (186/218),76.6％ (167/218),and 60.6％ (132/218).The average follow up was (20 ± 13)months.No significant difference existed in the rate of recurrence [0 vs.3.5％(4/113),x2 =3.786,P=0.123] between the two groups.Conclusions EVLT combined with foam sclerotherapy is as effective as surgery,while resulting in less complications,less invasive,safer and more effective for the treatment of varicose veins of the lower extremities.

Objective To investigate the causes of arterial reocclusion in diabetic feet patients after endovascular treatment and its remedial measures.Methods From January 2009 to October 2013,clinical data of 371 arterial reocclusion of diabetic feet patients after endovascular treatment in Tianjin First Central Hospital were reviewed retrospectively.We summarized the causes of reocclusion,treatment methods and the short term results.Results According to the Trans-Alantic Inter-Society Consensus (TASC) Ⅱ grading standards,the first time when the endovascular treatment started there were 37 cases of grade A,85 cases of grade B,143 cases of grade C,106 cases of grade D.Arterial re-occlusion developed from one day to 36 months,averaging at (21 ± 8) months.Causes of re-occlusion included intimal hyperplasia in 263 cases (70.9％),thrombosis in 65 cases (17.5％),dissection in 19 cases (5.1％),stent fracture in 17 cases (4.6％),vascular rupture in 7 cases (1.9％).Remedial therapy adopted for arterial reocclusion was repeated endovascular treatment in 327 cases (88.1％),arterial bypass surgery in 23 cases (6.2％),conservative treatment in 13 cases (3.5％),amputation (cut toe) in 4 cases (1.1％),4 cases (1.1％) died perioperatively.275 cases were followed up for 1 to 36 months,the average was (13 ± 8) months.patency rate was 82.9％,71.3％ and 63.0％ at 6 months,1 year and 2 years.Amputation rate was 1.1％,1.8％ and 2.5％ at 6 months,1 year and 2 years.Conclusions Intimal hyperplasia is to blame for arterial reocclusion after endovascular treatment of diabetic foot.In this case most patients still can benefit from second time endovascular treatment,with a satisfactory short term patency rate.

This paper described the results of the optimal method for preparation and extraction of lectin from Phaeoporus obliquus(Pers ex Fr).(J.Schroet).We determined the optimal buffer solution using the ag-glutination test with 2% hare blood cells.The optimal extraction process included the following parameters that were conformed by optimization analysis: material-water ratio,extraction time,concentration of sodium chloride and the pH value.The results are that the agglutination indexes of POL using TBS and PBS extrac-tion buffer were 64 and 16,respectively.The optimal extraction process is that,the material-water ratio was 1:50,the extraction time was 20 h,while the concentration of sodium chloride was 0 mol/L and pH was 8.0.The agglutinability of POL was 256 examined by this method.The optimized extraction process is stable and practicable,which may supply some basis for the application of the lectin from Phaeoporus obliquus in immunoregulation.

Objective To investigate the changes and significance of concentration of soluble intercellular adhesion molecule-1(sICAM-1) in cerebrospinal fluid (CSF) of bacterial meningitis(BM) in rabbits. Methods A total of 36 rabbits were randomly divided into m eningitis group, meningitis cefotaxime-treated group and control group. BM indu ced by escherichia coli(Ec) via cerebellomedullary cistern inoculated. Normal sa line was injected in control group. CSF was sampled in different time. The conce ntration of CSF sICAM-1 was detected by ELISA.Results 1.There was a low concentration of sICAM-1 in CSF in 85 percent of normal rabbi ts.2.In meningitis group, there was a sharp rise in the concentration of CSF sIC AM-1 at 6 hours after Ec was inoculated, reached a peak level at 12 hours, and t here was higher concentration of CSF sICAM-1 between 6 and 24 hour than that at 0 hour.3.In meningitis cefotaxime-treated group, the concentration of CSF sICAM -1 at 6 hour and 12 hours was similar to meningitis group, the time that get pe ak level was at 24 hours that at 12 hours after making use of antimicrobial agen t.The peak level was higher than meningitis group. The concentration of CSF sICA M-1 decreased markedly at 48 hours that made use of antimicrobial agent 36 hour s later,but the concentration was still higher than the peak level of meningitis group.Afterwards, with the time of making use of antimicrobial agent lengthened ,the concentration of CSF sICAM-1 decreased gradually.4.Experimental results in dicated by correlating analysis to these data that there was positive correlatio n in the concentration of CSF sICAM-1 with the brain water content.Conclusions sICAM-1 participates in the pathological process of BM, and contributes to the damage of blood brain barrier and the formation of brain edema.There is importan t significance that drugs which can resist the discharge of sICAM-1 will be impl ied. J Appl Clin Pediatr,2005,20(2):163-165

Objective:To analyze the death rate of asthma among Chinese people aged 0-19 years in 2018 and the trend of asthma mortality between 2008 and 2018, in order to guide the research of asthma control management and prevention strategy, and reduce the mortality of childhood asthma in China.Methods:Data from the national disease surveillance points system (DSPs) was adopted.The mortality rates of 0-19-year-old people in different age groups, genders, places of residence and geographical regions from 2008 to 2018 were calculated, and the national death toll of asthma was estimated as well.The annual percentage change (APC) and average annual percentage change (AAPC) were calculated, and the death rate of asthma among Chinese people aged 0-19 years in 2018 and change trend of asthma mortality from 2008 to 2018 were analyzed.Results:In 2018, there was no significant gender diffe-rence in asthma mortality among Chinese people aged 0-19 years among different age groups, places of residence and geographical regions(all P>0.05). From 2008 to 2018, the mortality rate of people aged 0-19 fluctuated from 0.023/100 000 to 0.046/100 000, the highest mortality rate was in 2009 and 2012, and the lowest was in 2018. It was estimated that the total number of deaths among people aged 0-19 years reached the highest in 2009 (148 cases) and the lowest in 2018 (70 cases). It is estimated that the total number of deaths among people aged 0-19 years in China from 2008 to 2018 was 1 158 cases.From 2008 to 2018, the total mortality rate of asthma in Chinese population aged 0-19 years decreased significantly (AAPC=-7.6%, 95% CI: -10.4%--4.7%). There was a significant decrease in male group(AAPC=-7.4%, 95% CI: -12.5%--2.0%), female group(AAPC=-7.5%, 95% CI: -12.7%--2.0%), 1-<5 years old group(AAPC=-11.4%, 95% CI: -17.9%--4.5%), 15-19 years old group(AAPC=-14.4%, 95% CI: -24.8%--2.6%), rural group(AAPC=-9.0%, 95% CI: -13.1%--4.8%) and central areas(AAPC=-13.1%, 95% CI: -24.0%--0.5%), with statistical significance(all P<0.05). Conclusions:The total mortality of asthma in 0-19-year old population decreased significantly from 2008 to 2018.The mortality rate of asthma in 0-19-year old people in China is at the low level around the world.

OBJECTIVETo investigate changes in the adherent ability, the expression of adhesion related proteins Pyk2 and paxillin during HL-60 cells differentiation into granulocyte-monocyte induced by low-dose (LD) bufalin in combination with all-trans retinoic acid (ATRA), and to explore the effects of bortezomib on cellular adhesion and the expression of Pyk2 and paxillin.

METHODSThe expression of CD11b was detected by flow cytometry, cellular adherence ability by MTT assay, and the expressions of Pyk2, paxillin and tubulin by Western blot.

RESULTSThe combination of 5 nmol/L bufalin and 30 nmol/L ATRA induced HL-60 cells differentiation in a time-dependent manner, the percentages of CD11b positive cells treated for 2 d and 4 d being (20.0 +/- 2.8)% and (75.0 +/- 5.3)%, respectively, with the increasing of cellular adherence ability. Meanwhile the expressions of Pyk2 and Paxillin were also up-regulated in a time-dependent manner. Bortezomib suppressed HL-60 cell adhesion in a dose-dependent manner. At concentrations of 1 nmol/L and 10 nmol/L the adherence level were (7.8 +/- 0.1)% and (5.3 +/- 0.3)%, respectively, with down-regulation of Pyk2 but not Paxillin.

CONCLUSIONPyk2 is involved in the regulation of cellular adherence function. Bortezomib might inhibit HL-60 cells adhension function by down-regulation of Pyk2 expression.

Boronic Acids ; pharmacology ; Bortezomib ; Bufanolides ; pharmacology ; Cell Adhesion ; drug effects ; Cell Proliferation ; drug effects ; Focal Adhesion Kinase 2 ; metabolism ; HL-60 Cells ; Humans ; Paxillin ; metabolism ; Pyrazines ; pharmacology ; Tretinoin ; pharmacology