Anti-endothelial cell antibodies (AECA) are heterogeneous autoimmune antibodies, which target at a group of antigens expressed in endothelial cells. In 1971, AECA was reported by Lindquist and Osterland for the first time. Since then, an increasing number of researches have showed that AECA exists and plays potential pathogenic role in the immune or inlfammation-related diseases, especially in systemic vasculitis. AECA may be a useful sera marker for the diagnosis and prognosis judgment of related autoimmune diseases. In this review, we summarize the recent progress on the relationship between AECA and systemic vasculitis.

Objective To construct a lentiviral vector carrying angiopoietin-1 (Ang-1) and DsRed gene, and to package a virus particles. Methods The Ang-1 lentiviral vector with DsRed (PLV.Ex3d.P/puro-CMV>Ang-1>IRES/DsRed-Express2) was constructed by Gateway technology, and identiifed by PCR and gene sequencing. The lentiviral vector was mixed with helper vector pLV/helper-SL3, pLV/helper-SL4 and pLV/helper-SL5 by Lipofectamine 2000 to prepare DNA-Lipofectamine?2000 complexes. The complexes were then added to transfect 293FT cells and package virus. The virus titers and infection ef-ifciency were determined by lfuorescence expression. Results Ang-1 lentiviral vector PLV.Ex3d.P/puro-CMV>Ang-1>IRES/DsRed-Express2 was constructed successfully as identified by PCR and gene sequencing. Lentivirus with high-efficiency infection was produced by transfection to 293FT cells and the virus titer was 5×108 TU/ml. Conclusions The recombinant len-tiviral vector for Ang-1 was successfully constructed by Gateway technology and the lentivirus with high-efifciency infection packaging can be used for further experiment of Ang-1 gene.

Objectives To explore the clinical intervention of prenatal diagnosed congenital choledochal cyst in infants. Methods 37 infants with prenatally diagnosed congenital choledochal cyst from September 2006 to February 2013 were di-vided into early (0-3 month) operation group (Group A, n=20) and late (>3 month) operation group (Group B, n=17) according to the timing of surgery. The clinical characteristics, the preoperative and postoperative liver function, postoperative com-plications and pathological examination of liver biopsy were retrospectively analyzed. Results Five infants in group A and 2 infants in group B became jaundiced after birth. No statistical difference was found in alanine aminotransferase (ALT) and aspartate aminotransferase (AST) between two groups (P>0.05). Preoperative and postoperative levels of total bilirubin (TBIL) and direct bilirubin (DBIL) in group A were signiifcantly higher than those in group B (P<0.05). Two cases had anastomotic stricture and one case had bile leakage in group A while no postoperative complication was found in group B. Liver biopsy re-sults showed that there were 11 cases of biliary cirrhosis, including 4 cases in group A (36.36%) and 7 cases (63.64%) in group B, but no statistical difference in incidence of cirrhosis between two groups (P=0.160). Conclusions Infants with prenatally diagnosed congenital choledochal cyst should be closely observed. Once jaundice, clay-coledstool, increased ALT and AST, fast growing enlarged cysts were found, infants should be surgically treated as soon as possible to reduce liver damage and the incidence of liver cirrhosis.

Objectives To conduct nutritional risk assessment analysis of hand-foot-mouth disease in children and to explore rational and feasible nutritional intervention. Methods The information of children with hand-foot-mouth disease in three hospitals in Guilin area was collected by ifxed-spot continuous sampling. Inquiry investigations, physical mea-surements combined with clinical diagnosis were undertaken, and nutritional risk assessment and management were con-ducted by the malnutrition screening tool of children (STAMP scoring). Those with STAMP scores ≥4 were considered at high nutritional risk. Nutritional risk reassessment was conducted on children with high nutritional risk after nutritional intervention and management. Results A total of 192 children with hand-foot-mouth disease were selected. The occur-rence rate of high nutritional risk was 68.75%(132/192). The hospitalization time of patients with high nutritional risk was prolonged and the hospitalization expense was increased apparently. The nutritional support treatment and nutritional edu-cation were undertaken on the children with high nutritional risk. The incidence of high nutritional risk from admission to discharge decreased from 68.75%to 36.98%(P<0.05). The clinical outcomes of those children accepting nutritional inter-vention were signiifcantly improved (P<0.05). Conclusions The occurrence and prognosis of hand-foot-mouth disease is closely related to the nutritional status of children, so nutritional risk assessment, nutritional intervention and management should be performed as early as possible.

Objective To study the value of plasma level of matrix metalloproteinase-9 (MMP-9) for the early diagno-sis of Kawasaki disease. Methods The difference in MMP-9 level was studied by retrospective nested case-control method between children with early Kawasaki disease, Henoch-Sch?nlein purpura (HSP) or respiratory infection, and healthy control children. The associations of MMP-9 with serum procalcitonin, erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) were also analyzed. The cutoff-value, sensitivity and speciifcity of MMP-9, ESR and CRP in diagnosis of Kawasaki disease were studied by ROC curve. The areas under ROC curves were compared among different diagnostic markers to deter-mine their signiifcances in diagnosis of Kawasaki disease. Results The plasma level of MMP-9 was increased in early phase of Kawasaki disease, and higher than that in children with HSP or respiratory infections and in healthy controls (P<0.05). If MMP-9, ESR and CRP cutoff value were set to be 90.23 ng/ml, 56.5 mm/h and 27.55 mg/L, the sensitivity, speciifcity and area under ROC curve was 83.3%, 86.4%and 0.904, 95.8%, 66.1%and 0.807, 83.3%, 74.6%and 0.789 respectively. The diagnostic performance of MMP-9 for Kawasaki disease was better than that of ESR and CRP. Conclusions The plasma level of MMP-9 is increased in the early stage of Kawasaki disease. The sensitivity and speciifcity of MMP-9 in diagnosis of Kawasaki disease are highest if cutoff value is set to be 90.23 ng/ml.

Objectives To investigate the prevalence of non-alcoholic fatty liver (NAFLD) disease and its correlation with chronic metabolic diseases in two primary school students in Shanghai. Methods One thousand ifve hundred and thirty-two 7-11 year-old students from two primary schools were enrolled in Septamber-October 2011. The anthropometric indices, blood pressure, screening for pseudoacanthosis nigricans and liver ultrasonography of all subjects were recorded. Results The overall prevalence of NAFLD, obesity, abdominal obesity, pseudoacanthosis nigricans, high systolic blood pressure and high diastolic blood pressure was 6.5%, 26.7%, 16.3%, 5.1%, 1.7%and 1.9%, respectively. The prevalence of NAFLD and abdomi-nal obesity in students of central urban area was signiifcantly higher than that in suburban area (P<0.01). The binary regression analysis revealed a signiifcant association between NAFLD in students with sex, age, obesity, abdominal obesity, pseudoacan-thosis nigricans and high systolic blood pressure (P<0.05). Conclusions NAFLD has close correlation with chronic metabolic disease in children. It is time to adopt prevention, detection and treatment in NAFLD children with symptoms of chronic meta-bolic diseases.

Objective To evaluate the risk factors for intracranial hemorrhage in premature infants. Methods Cochrane Library, PubMed, ScienceDirect, Chinese Academic Literature Main Database, Chinese Science and Technology Periodi-cal Database, Wanfang Periodicals and Dissertation Database were searched for articles published from January 2000 to December 2012 on the risk factors of intracranial hemorrhage in premature infants, with retrospective retrieval and manual retrieval as supplement. RavMan5.2 provided by Cochrane was used for meta-analysis. Fixed-or random-effects models were selected according to the results of heterogeneity test. Results Nine studies were conifrmed to be eligible. Odds ratio (OR) and 95%conifdence interval (CI) of the risk factors were as follows:gestation age≤32 weeks (OR=3.29, 95%CI=2.76-3.91), birth weight≤1 500g (OR=2.68, 95% CI=2.24-3.20), maternal complications (OR=1.59, 95% CI=1.23-2.06), intrauterine distress or birth asphyxia (OR=2.42, 95% CI=2.06-2.84), mechanical ventilation (OR=3.23, 95% CI=2.55-4.09), metabolic acidosis (OR=2.88, 95%CI=2.04-4.05), use of high concentration of oxygen (OR=2.98, 95%CI=1.63-5.44), prenatal use of dexametha-sone (OR=0.69, 95%CI=0.55-0.86), respiratory distress syndrome (OR=1.57, 95%CI=1.04-2.39). Those differences were all statistically signiifcant. There was no difference in caesarean section (OR=0.99, 95%CI=0.84-1.17), multiparity (OR=1.05, 95%CI=0.79-1.40) and gender (OR=1.25, 95%CI=0.97-1.59). Conclusions The risk factors for intracranial hemorrhage in premature infants are gestation age≤32 weeks, birth weight≤1 500 g, maternal complications, intrauterine distress or birth asphyxia, mechanical ventilation, metabolic acidosis, use of high concentration of oxygen, respiratory distress syndrome, but prenatal use of dexamethasone can reduce the incidence of intracranial hemorrhage in premature infants.

Objective To study the expression and signiifcance of phospholipid transfer protein (PLTP) and macrophage migration inhibitory factor (MIF) in mice with bronchopulmonary dysplasia (BPD). Methods Ninety-six 4-day-old mice were randomly divided into oxygen group and air group. Mice in oxygen group were exposed to a FiO2 of 65%, and mice in air group were exposed to air. On day 7, 14, 21 and 28, blood and lung tissue samples from 12 randomly selected mice in each group were obtained. The serum levels of MIF and PLTP were measured by ELISA assay. The morphological changes of lung tissue were ob-served with HE staining. Results The mice in oxygen group showed thickened lung parenchyma and obvious pulmonary ifbrosis. The radioactive alveolar count was signiifcantly lower in oxygen group than that in air group (P<0.01). PLTP level in air group was increased gradually from day 7 to day 21, and began to decrease on day 28. PLTP level in oxygen group was increased from day 7 to day 14, and decreased on day 21 and day 28. MIF level in air group did not change during the experiment. MIF level in oxygen group was signiifcantly increased from day 7 to day 21, and began to decrease on day 28. Conclusions MIF and PLTP may be good biomarkers for the diagnosis of BPD.

Objective To explore the possible role of vitamin D in the pathogenesis of IgA nephropathy (IgAN). Me-thods After the IgAN model was successfully induced at 12 weeks, the BALB/C mice were randomly divided into IgAN group (n=15) and IgAN+VitD group (n=15). The nephrosis mice were administrated with 100 μl/d propylene glycol or propyl-ene glycol+1,25(OH)2D, 3 ng/(100g?d), for 6 weeks. The control group was setted (n=15). The level of 24 hour urine protein was determined at week 0, 12 and 18. At week 18, the levels of serum 25(OH)D, ifbroblast growth factor 23 (FGF23) and galactose-deifcient IgA1 (Gd-IgA1) were detected. The mRNA and protein expressions of interleukin-21 (IL-21) in Peyer’s patches (PPs) were detected by lfuorescent quantitative reverse transcription-polymerase chain reaction and western blot respectively. The protein expression of Bcl-6 was detected by western blot. The percentages of Tfh cells/T lymphocytes, B220+IgM+/B lympho-cytes, B220+IgA+/B lymphocytes, B220-IgA+/B lymphocytes in PPs were determined by lfow cytometry. Results Compared with control group, the levels of 24 hour urine protein, FGF23 and Gd-IgA1 were increased, serum 25(OH)D was decreased, the mRNA and protein expressions of IL-21 and the protein level of Bcl-6 were increased, the percentages of Tfh cells/T lym-phocytes, B220+IgM+/B lymphocytes, B220+IgA+/B lymphocytes, B220-IgA+/B lymphocytes were elevated in IgAN group (P<0.05). These indicators were improved in IgAN+VitD group. Compared with the IgAN group, the differences were statisti-cally signiifcant (P<0.05), however compared with control group, some indicators showed no signiifcant differences (P>0.05). Conclusions 1,25(OH)2D may protect the microenvironment of PPs in IgAN through inhibiting the differentiation of Tfh cells and B cells and the generation of Gd-IgA1.

Objectives To study the correlation between social emotion and temperament in infants and toddlers. Me-thods The Brief Infant-Toddler Social and Emotional Assessment (BITSEA) and Toddler Temperament Questionnaire (TTQ) were used to evaluate the social emotional problems and temperament of 657 infants and toddlers 1 to 3 years old. Results The temperament dimensions were correlated with behavior and competence factors. The infants and toddlers in dififcult type group had more behavior problems or deifcits/delays in competence than those in easy type group (χ2=26.49, 10.48, P<0.01). Conclu-sions Infants and toddlers with negative temperament traits have more behavior problems and weaker social emotional compe-tences. The temperament should be considered in dealing with emotional problems.