Objective To determine the dynamic changes of ileum epidermal growth factor(EGF),transforming growth factor-α(TGF-α)and epithelial growth factor receptor(EGFR)in neonatal rats with intestinal injury and to investigate their role in the neonatal necrotizing enterocolitis(NEC). Methods One-day-old Wistar rat pups were divided into two groups.The rats in the lipopolysaccharide(LPS)-injected group(n=40)received an intraperitoneal injection with 5 mg/kg LPS and those in the control group(n=8)did not.Control group and LPS-injected group at 1,3,6,12 and 24 h following LPS challenge were sacrificed for histological evaluation of NEC and for measurernents of EGF,EGFR,EGFR mRNA and TGF-α mRNA. Results Compared with the control group(0.12 0.17).the LPS-iniected pups showed a significant increase in injury scores at 1,3,6,12 and 24 h(1.28±0.62,1.75±0.74,1.98±0.75,2.85±0.41 and 2.35士0.63,respectively)(P<0.01).EGF protein levels at 1,3,6,12,24 h[(235.9±44.3)pg/mg prot,(231.8±30.0)pg/mg prot,(223.3±48.1)pg/mg prot,(211.7±47.0)pg/mg prot and(221.4±39.0)pg/mgprot,respectively]were significantly lower than that of the control group[(287.7±42.6)pg/mg prot](P<0.05).There was a negative correlation between the EGF levels and the grade of intestinal injury within 24 h(r=1.000,P<0.01).The expression of EGFR protein and mRNA was increased after LPS administration.There was no correlation between the EGFR protein and the grade of intestinal injury(r=0.800,P>0.05).The expression of TGF-α mRNA was significantly up-regulated at 1 and 3 h following LPS injection. Conclusions Reduced levels of EGF may play a pivotal role in the pathogenesis of NEC.

Animals ; Diet ; Enterocolitis, Necrotizing ; etiology ; metabolism ; Humans ; Infant, Newborn ; NF-kappa B ; physiology ; Platelet Activating Factor ; chemistry ; metabolism ; Risk Factors ; Tumor Necrosis Factor-alpha ; physiology

Objective　To investigate clinical features of neonatal ventilator associated pneumonia.Methods　Retrospective analysis of clinical features was performed in twenty-two newborns with ventilator associated pneumonia.Results　Ventilator associated pneumonia were found in 22 ou t of 36 neonates with mechanical ventilation.Conclusion　The incidence of VAP is significantly increased if the time of mechanical ventilation in longer than 96 hours.

Ataxia Telangiectasia ; genetics ; Humans

OBJECTIVETo explore the mechanism of electroacupuncture at Zusanli (ST 36) on regulation of intestinal inflammatory reaction in rats with acute pancreatitis.

METHODSFifty-four SD rats were randomly divided into a severe acute pancreatitis (SAP) group, an electroacupuncture (EA) group and a sham-operation (SO) group, 18 cases in each group. 3.5% sodium cholate was used to made SAP model by retrograde injecting in cholangiopancreatic duct. After the success of model making, the EA group was treated with EA at bilateral Zusanli (ST 36) for 30 min. The SO group and the SAP group were fixed at the same time for 30 min without treatment. All the rats were killed at 3 h, 6 h and 12 h after modeling in batches. The pathological changes of pancreatic tissue and intestinal epithelium were observed, and the expression of small intestinal occludin protein and nuclear factor kappa-B (NF-kappaB) were detected by immunohistochemical SP method.

RESULTSThe pathologic score and the expression of small intestinal NF-kappaB p65 at 3 h, 6 h and 12 h after modeling in the EA group and the SO group were significantly lower than those in the SAP group (all P < 0.05), and the expression of small intestinal occludin protein in the EA group and the SO group were significantly higher than that in the SAP group (all P < 0.05).

CONCLUSIONElectroacupuncture at Zusanli (ST 36) can alleviate pancreatic injury by reducing the expression of NF-kappaB p65 and enhancing the expression of occludin protein in the intestinal epithelium in the SAP model rats.

Acupuncture Points ; Acute Disease ; therapy ; Animals ; Electroacupuncture ; Humans ; Intestine, Small ; metabolism ; Male ; NF-kappa B ; genetics ; metabolism ; Occludin ; genetics ; metabolism ; Pancreatitis ; genetics ; metabolism ; therapy ; Rats ; Rats, Sprague-Dawley

Hoxa3-Pax1/Pax9-Eya1-Six1/4 regulatory pathway seems to be operating during forming the bilateral parathyroid/thymus common primordial in early embryonic development.The specification of the parathyroid domain in the parathyroid/thymus primordial is regulated through a Shh-Tbx1-Gcm2 pathway.Gcm2 also may play roles in later steps of parathyroid development,including CaSR and PTH gene expression.MafB and Gcm2 interact with each other and synergistically activate PTH transcription.Genetic basis and the etiology of some hypoparathyroid disorders in man are involved defects in transcription factors that include GCMB,GATA3,Tbxl,SOX3 and GNA11.This marker expression in thymus and parathyroid primordium includes HoxA3,Pax1,Eya1,and Six1;and expression of parathyroid cell-like cells includes Gcm2,CaSR,and PTH.These expressions may serve as markers of stem cell differentiation into parathyroid cell-like cells.

Objective To explore the comprehensive approach of rhinoplasty using autologous costal cartilage and e-PTFE,and to observe the outcome and possible complications.Methods A 3-4 cm long costal cartilage was taken out mostly from the 6th or 7th rib and then divided into several parts and shapes.Structural reconstruction of the nasal tip was then done with these costal cartilage parts.Radix augmentation was conducted with e-PTFE.Results From Jan.2013 to Sept.2014,48 patients were treated with this method,all females,aged 22-35 years.36 of them had received rhinoplasty before,12 of them received none.Satisfying aesthetic contouring of the nasal tip and dorsum had been achieved in 45 patients.Deviation of the collumella and nostril asymmetry were found in 3 patients.Among all patients,no such complications as pneumothorax,hemothorax,infection,or hemotoma were observed.The scar on the donor site was not obvious.Conclusions Costal cartilage is sufficient,supportive and easily shapable,when applied to the structural reconstruction of the nasal tip,which can meet the demands of patients who prefer more outstanding and delicate nasal tip contouring.

AlM: To explore the clinical significances and changes of related parameters of corneal endothelial cell in keratouveitis patients before and after treatment.
METHODS:Fifty-two keratouveitis patients ( 52 eyes ) diagnosed and treated in our hospital from October 2012 to December 2013 were collected. Before and after treatment, the related parameters of corneal endothelial cell in all patients were measured with non - contact corneal specular microscope and these parameters were statistically analyzed.
RESULTS: Compared with the normal group, obvious endothelial cell edema and great variation was observed in diseased group. The shorter duration of treatment, the better the recovery of endothelial cells and the fewer cells lose. Conversely, the longer the healing of normal hexagonal cell ratio was smaller, the larger the coefficient of variation. Before and after treatment, the differences of each parameter were statistical significance (P<0. 05).
CONCLUSlON: The functional recovery of corneal endothelial cell has directly relation with disease times.

OBJECTIVE: To test the technical parameters of GlobalFiler® PCR Amplification Kit for its application to forensic application value and to investigate the genetic polymorphisms. METHODS: The validation was conducted in sensitivity, mixed samples, species specificity, adaptability, survivability, consistency, peak height balance and stability. The amplification and detection of the genomic DNA from 373 unrelated individuals from Beijing Han nationality were extracted by automation workstation. RESULTS: Global-Filer® PCR Amplification Kit was adaptive to some mixed, degraded and inhibited samples. The power of sensitivity and adaptability and peak height balance showed well. The distributions of genotype frequencies for 21 STR loci in the population were all in accordance with Hardy-Weinberg equilibrium (P > 0.05). The PIC value of the 21 STR loci was among 0.536 to 0.940; the H value was among 0.558 to 0.933; the DP value was among 0.783 to 0.992; the PE value was among 0.243 to 0.874. CONCLUSION GlobalFiler® PCR Amplification Kit is suitable for criminal cases and DNA database in forensic practice. And 21 STR loci in Beijing Han nationality have high polymorphism, which have application value in forensic practice and population genetics.
Asian People/genetics* ; Beijing ; Databases, Nucleic Acid ; Ethnicity ; Gene Frequency ; Genetic Loci/genetics* ; Genetics, Population ; Genotype ; Humans ; Polymerase Chain Reaction/standards* ; Polymorphism, Genetic ; Reproducibility of Results ; Species Specificity

OBJECTIVETo compare the osseointegration and corrosion of different kind of coatings on pure titanium.

METHODSBy plasma spraying technology, nitrogen silicon zirconium-hydroxylapatite (ZrSiN-HA) compound coating was prepared on the surface of pure titanium and the pure titanium was implanted with the mandible of the experimental animal. The superficial appearance of the compound coating was observed and analyzed by scanning electron microscope (SEM). The ZrSiN-HA, nitrogen silicon zirconium (ZrSiN), hydroxylapatite (HA) and pure titanium were compared and examined. In the four groups, the bone binding force of coatings were detected, and the superficial appearance of the break regions were observed by the electronic multipurpose material testing aircraft. In the four groups, the anticorrosive of coatings were compared and examined on the electrochemistry corrosion testing system.

RESULTSExperimental results indicated that the implant surface sprayed with the ZrSiN-HA was more compact than that sprayed with HA. The crystallization was obvious. Compared with the other coatings, the bone binding force of the ZrSiN-HA coating was the highest, and its anticorrosive performance was the strongest.

CONCLUSIONThe application of ZrSiN-HA coating is advantageous to the long-term retention of implant, and it has huge latent application value to dental dummy.

Animals ; Coated Materials, Biocompatible ; Durapatite ; Materials Testing ; Microscopy, Electron, Scanning ; Nitrogen ; Osseointegration ; Prostheses and Implants ; Silicon ; Surface Properties ; Titanium ; Zirconium