Background:Inflammation plays an important role in intestinal ischemia-reperfusion injury(IRI),and erythropoietin (EPO)has been reported to have anti-inflammatory activity. Aims:To explore the protective effect of EPO on intestinal IRI and its potential mechanism. Methods:Thirty-two healthy male Sprague-Dawley rats were randomly divided into four groups:sham operation group(sham group),IRI group,EPO group and 740Y-P group. Rats in IRI,EPO and 740Y-P groups were injected intraperitoneally with 0. 9% NaCl,EPO and EPO + 740Y-P,respectively,one hour before the establishment of intestinal IRI model by superior mesenteric artery clamping(45 min)-reperfusion. All rats were sacrificed one hour after reperfusion. Histopathological changes of small intestine were observed;expression of proteins in PI3K/ Akt and NF-κB signaling pathways was measured by Western blotting;expression and secretion of inflammatory cytokines, including interleukin-8(IL-8),tumor necrosis factor-α(TNF-α)and monocyte chemoattractant protein-1(MCP-1)were examined by real-time PCR and ELISA. Results:Compared with sham group,the damage score of small intestine,protein expressions of PI3K,p-Akt and p-NF-κB p65,as well as mRNA expressions and serum levels of IL-8,TNF-α and MCP-1 in IRI group were significantly increased(P < 0. 05). EPO pretreatment could ameliorate the histopathological changes of small intestine in IRI model rats,inhibit PI3K/ Akt and NF-κB signaling activation and down-regulate expression and secretion of inflammatory cytokines. When 740Y-P,a PI3K agonist,was used combinedly,the effect exerted by EPO was diminished. Conclusions:EPO pretreatment can protect against intestinal IRI by inhibiting the activation of PI3K/ Akt/NF-κB signaling and the subsequent inflammatory response.

Objective To investigate the protective effect of Gingko Biloba extract (GBE) on acute lung hemorrhage induced by Lipopolysaccharide(LPS) in newborn rats. Methods 1. Acute lung hemorrhage models were reproduced by intraperitoneal injection with LPS (5 mg/kg). 2. Thirty two rats were randomly divided into 4 groups,GBE groups (4 mg/kg,8 mg/kg, 16 mg/kg) and LPS group 5 mg/kg. Results In group LPS, extensive lung hemorrhage was observed after 4 hours of injection . TNF - ? iung content was obvious in LPS group. The expression of lung nuclear factor(NF-kB )immunohistochemistry wasobvious. While the parameters were obviously attenuated by GBE before LPS. Conclusion GBE may be useful in the treatment of acute pulmonary inflammatory disease.

Objective To study the regulatory ability of peroxisome proliferator-activated receptor ?(PPAR?) ligands to the inflammatory response in human gallbladder epithelial cells. Methods Culture human gallbladder epithelial cells and identify them . Cells were treated for 24 hours with 0, 10 ?mol/L, 20 ?mol/L, 30 ?mol/L, 50 ?mol/L and 100 ?mol/L of Ciglitazone during cellular growth peak(5th day), then stimulated them with hIL-1? 5 ng/ml for 2 hours and measured the concentration of IL-6、IL-8 and TNF-? in cellular supernatants by riadioimmunoassay. Results Contrasted with control group, the expression of IL-6 and IL-8 in each test group were inhibited ((P

AIM:To investigate the activity change of voltage-dependent delayed rectifier potassium channel(Kv) on human airway smooth muscle cells(HASMCs) after transfection of Kv1.5 antisense oligonucleotides(AsOND),and to discuss the regulating mechanism of Kv1.5.METHODS: The mRNA and protein expressions of Kv1.5 in liposome-mediated Kv1.5 AsOND transfected HASMCs were measured with techniques of reverse transcriptase-polymerase chain reaction(RT-PCR) and Western blotting.Kv activities in transfected HASMCs were investigated with whole-cell patch clamp.RESULTS: After HASMC were transfected by liposome-mediated Kv1.5 AsOND,the mRNA and protein expressions of Kv1.5 were decreased,and Kv activity was inhibited,which made the cell membrane potential(Em) inclined to depolarization.CONCLUSION: Transfection of Kv1.5 AsOND made the function of Kv in HASMCs decreased.Kv1.5 may play a critical role in the regulation of Kv activity.

Objective To investigate cranial decompression under temporal muscle in very-low position with large bone flap combined with mild hypothermia for severe cranial trauma.Methods 88 severe brain injury patients (GCS ≤ 8 ) were randomly divided into two groups,mild hypothermia group( n =48) and non-mild hypothermia group ( n =40),both presented with cranial decompression under temporal muscle in very-low position with large bone flap.Data of patients,GCS increment,rate of brain cistern display,rate of pupil shrink and therapeutic effect were ananlyzed.Results The treatment group showed better effect compared with the oontrol group(P＜0.05).Condusion The therapy of cranial decompression under teniporal muscle in very-low position with large bone flap combined with mild hypothennia showed the advantage of depressing intracranial pressure,reducing crerebral edema and improving the therapeutic effect of severe brain injury patients.

Objective To investigate the application of sympathetic skin response (SSR) in evaluation of the bladder sensation with fillingcystometry (FC). Methods 15 healthy male adults accepted FC and FC-SSR. Their first desire to void capability (FDC), maximum cystometriccapacity (MCC) and FDC/MCC under FC and FC-SSR were compared. Results The FDC was (193.8±36.9) ml and FDC/MCC was(58.9±8.03) with FC, which was less than (233.9±30.3) ml and (69.4±2.92) respectively with FC-SSR (P<0.01). Conclusion FC-SSR maybe a stable method for examination the function of bladder sensation.

Objective:To explore if there is premature senescence of chondrocytes in patients with Kashin-Beck disease (KBD) and osteoarthritis.Methods:Five knee cartilage samples of KBD, osteoarthritis and control groups were collected, respectively, from the Second Affiliated Hospital of Xi'an Jiaotong University. DNA was then extracted from cartilage samples and DNA methylation was analyzed by Illumina Infinium HumanMethylation450 BeadChip. At the same time, based on genome-wide methylation data, the online DNA methylation aging clock calculator (https://dnamage.genetics.ucla.edu/home) was used to calculate the DNA methylation age (DNAm age) of samples, and the results were compared with their actual ages.Results:In the comparison between KBD group and control group, 1 212 differentially methylated CpG sites were found, including 497 hypermethylated CpG sites and 715 hypomethylated CpG sites, corresponding to 264 hypermethylated genes and 368 hypomethylated genes, respectively. In the comparison between osteoarthritis group and control group, 656 differentially methylated CpG sites were found, including 343 hypermethylated CpG sites and 313 hypomethylated CpG sites, corresponding to 177 hypermethylated genes and 174 hypomethylated genes, respectively. In the above comparison, 367 overlapped CpG sites (corresponding to 182 genes) were found, which were differentially methylated in both KBD and control groups and osteoarthritis and control groups. The results of DNA methylation aging clock showed that the average age acceleration differences between DNAm age and actual age of KBD, osteoarthritis and control groups were 2.549, 0.017, and - 5.364 years, respectively, the DNAm ages of KBD and osteoarthritis groups were greater than the actual ages.Conclusion:The chondrocytes show premature senescence in both KBD and osteoarthritis.

Objective To compare the skills level before and after pediatric advanced life support course and analyze the effect of the training. Methods The pediatric advanced life support was used as the textbook. The skills were got through attending theory classes, watching demonstrations and taking part in the simulator training. The questionnaires were filled strictly and the data was analysed. Results The test scores were increased after the training (P＜0. 01). There were only 8.7% of the trainees had used the rescue equipments and 61.3% had never seen the rescue equipments before training. More than 80% of the trainees were satisfied with the training about the utility and novelty. Conclusion pediatric advanced life support course can successfully deliver a large number of healthcare providers with international unique pediatric emergency treatment skills ,and raise the participants abilities of rescuing critical children.

Objective To study the distribution of sepecific immunoglobulin E(SIgE) and its relationship with the total immunoglo-(bulin) E(TIgE) in children with respiratory allergic disease.Methods Serum SIgE was measured in 209 children with asthma,allergic rhinitis,cough variant asthma and asthmatic bronchitis by Pharmacia UniCAP100E system.The SIgE included the SIgE antibodies to fx5E(egg albumen,milk,fish,wheat,peanut,soybean),hx2(house dust,dermatophagoides culinae,dermatophagoides pteronyssinus,cockroach),ex1(scurf of cat,horse,cow and dog),mx1(penicillium notatum,helminthosporium halodes,aspergillums furngatits,alternaria allcrnata,),f23(crab),f14(shrimp),w14(amaranthaceae),T21(cajeput) and i8(moth).Serum TIgE was also detected in 132 patients.Results 1.The positive detection rate of SIgE in patients aged from 3 to 14 years were 72.81% which were higher than that of aged from 40 days to 3 years old(57.89%).2.The SIgE detection rate of fx5E,hx2 and ex1 were 81.8%,32.73% and 16.36% respectively in patients aged from 40 days to 3 years old;but that of hx2,fx5E,i8,w14,f24 and ex1 were 78.31%,48.19%,24.10%,24.10%,15.66% and 15.66% respectively in patients aged from 3 to 14 years.3.The positive detection rate of SIgE was related with that of TIgE.The detection rate of combined SIgE and the TIgE was 83.33%.Conclusions 1.The lower detection rate of SIgE in patients aged from 40 days to 3 years may be due to the wheezing in infants partially induced by the acute infection and congenital airway disease.2.The most common allergens in children aged from 40 days to 3 years were fx5E,hx2 and ex1.But that of patients aged from 3 to 14 years were hx2,fx5E,i8,w14,f24 and ex1.3.The combined detection of the SIgE and the TIgE may increase the positive rate and diagnose the patients with respiratory allergic disease effectively.

The effects of protein kinase C (PKC) on the tension and the activity of voltage-dependent delayed rectifier potassium channel (K(y)) were examined in normal and passively sensitized human airway smooth muscle (HASM), by measuring tones and whole-cell patch clamp techniques, and the K(v) activities and membrane potential (E (m)) were also detected. The results showed that phorbol 12-myristate 13-acetate (PMA), a PKC activator, caused a concentration-dependent constriction in normal HASM rings. The constriction of the passively sensitized muscle in asthma serum group was significantly higher than that of the normal group (P<0.05), and the constrictions of both groups were completely abolished by PKC inhibitor Ro31-8220 and calcium channel inhibitor nifedipine. K(v) activities of HASM cells were significantly inhibited by PMA, and the E (m) became more positive, as compared with the DMSO (a PMA menstruum)-treated group (P<0.01). This effect could be blocked by Ro31-8220 (P<0.01). It was concluded that activation of PKC could increase the tones of HASM, which might be related to the reduced K(v) activity. In passively sensitized HASM rings, this effect was more notable.