Objective In order to probe other possible mechanisms of aerobic tra ining in anti-atherosclerosis besides lipid-regulation, we observed the influenc e of aerobic training on the formation of atherosclerotic plaque, the concentrat ion of nitric oxide(NO) in serum, the content of inducible nitric oxidase (iN OS) and endothelial nitric oxidase (eNOS) in thoracic aorta in ApoE-deficient mi ce. Methods The atherosclerotic lesions, the serum NO, the con tent of thoracic aortic iNOS and eNOS by ABC immunohistochemical staining combin ed with computer image quantitative analysis technique on frozen sections were m easured after 10-week swimming training. Thoracic aorta Oil Red O (ORO) staining on the intima were als o analyzed. Results Compared with controls, aerobic training d elayed the plaque formation i n ApoE-deficient mice (P

Objective To investigate the distribution and drug resistance of pathogenic bacteria in children with urinary tract infection.Methods All data were analyzed retrospectively.Middle segment urine samples from 573 outpatients and inpatients in children were collec-ted,cultured and identified for pathogenic bacteria by the way of ATB apparatus during Jan.2005-Dec.2007,and the drug resistance of positively cultured bacteria was tested with disc agar diffusion method.Extended spectrum ?-lactamases(ESBLs) were determined by phenotypic comfirmatory test according to the criteria of National Committee for Clinical Laboratory(NCCLS),and the identifications of methicillin-resistant staphylococcus aureus(MRS) and high level aminoglycoside resistance(HLAR) were carried out by the methods recommended from NCCLS too.Results Four hundred and eighty-two pathogenic strains were isolated from urine culture of children during 3 years,in which 385 strains(79.9%) were gram-negative(G-) and 97 strains(20.1%) were gram-positve(G+).The primary G-bacterium was Escherichia coli which accounted for 41.1%(198 strains),and the primary G+ bacterium was Enterococcus which accounted for 14.7%(71 strains).All the strains of Escherichia coli and klebsiella pneumoniae were sensitive to imipenem.Their resistance rates to sulperazone,amikacin and nitrofurantoin were less than 9.7%,while the rates to piperacillin,ceftazidime,ciprofloxacin and trimethoprim-sulfamethoxazole were more than 50%.ESBLs-producing strains accounted for 59.2% in Escherichia coli and 52.7% in klebsiella pneumoniae.Pseudomonas aeruginosa showed high multi-drug resistance.All the Enterococcus strains were sensitive to vancomycin.The resistance rate to nitrofurantoin was less than 8.1%.The detection rate of HLAR was 26.1%.All the Staphylococcus strains were sensitive to vancomycin.The resistance rate to nitrofurantoin and rifampicin were less than 22.4%.The detection rate of MRS was 52.7%.Conclusions The primary pathogenic bacterium in children with urinary tract infection is G-bacteria.The Escherichia coli is the first,the Enterococcus is the second and the klebsiella pneu-moniae is the third.All the pathogenic strains show high drug resistance to antibiotics in common use,therefore,clinicians should attach importance to the results from bacteria culture and susceptibility test,in order to obtian reference for accurate clinical diagnosis and rational use of antibiotics.

Objective The treatment of limb bone fracture in combination with main vessel injury wasanalyzed retrospectively.Methods Twenty ccsese were respectively conducted by interlocking intramedullary pin fixation,plate and screw fixation,plate and screw fixation orextemal brace fixation according to the injury conditions of the fractures.Then,vascahr injaries were flexibly dwelt with direct repair,end-to-end anastomosis or blood vessel grafting.Results The-limb save rate in this study is 70%.and the reaoons which csllsed the amputation included:Long ischemia time and serious tissue damage.Conclusion Fractures of the extremities with major vascular injuries should be diagnosed promptly to be conducted properly.In this way,better outcome would be obtained.

Objective To investigate the clinicopathological features,survival,and the impact of postoperative adjuvant radiotherapy on the ovarian function in patients less than or equal to 35 years of age with stage ⅠB-ⅡA cervical cancer.Methods One hundred and eighty-six patients who were admitted to our hospital from 2000 to 2011 were retrospectively analyzed.An equal number of patients older than 35 years of age with cervical cancer within the same period were used as stage-marched controls.The Kaplan-Meier method was used to calculate the survival rates,and the log-rank test was used for pairwise comparison and univariate prognostic analyses.The Cox proportional hazards model was used for multivariate prognostic analyses.Results The patients less than or equal to 35 years of age had a significantly higher incidence of non-squamous carcinoma but significantly lower incidence rates of deep stromal invasion and lymph-vascular space invasion (LVSI) compared with the control group (P =0.000;P =0.008;P =0.000).Though young patients had significantly higher 5-year disease-free survival (DFS) and overall survival (OS) rates than the control group (93.7％ vs.84.5％,P=0.005;96.1％ vs.89.5％,P=0.033),age was not an independent prognostic factor (P =0.202;P =0.950).Among patients less than or equal to 35 years of age,lymph node metastasis and LVSI were independent prognostic factors for DFS (P =0.000;P =0.000),while LVSI and initial tumor size were independent prognostic factors for OS (P =0.000;P =0.000).There was no significant difference in the incidence of normal ovarian function between young patients treated with and without adjuvant radiotherapy after ovarian transposition (63％ vs.73％,P =0.422).Conclusions Patients less than or equal to 35 years of age with stage ⅠB-ⅡA cervical cancer have a better prognosis than the control group.However,age is not an independent prognostic factor.Postoperative adjuvant radiotherapy will not impair the function of transposed ovaries.

Objective To investigate the effects of isoflurane and sevoflurane at the same dose on expression of Caspase-3 of primary somatosensory cortex (SI) and expression of micmmbule associated protein 1B (MAP1B)in cortical neuronsin neonatal SD rats.Methods Fifty-five neonatal SD rats at postnatal day 7 (eleven rats each litter,altogether 5 litters)were assigned randomly into control group(C group),isoflurane group (I group)and sevoflursne group(S group)in average.The rats in I group,S group or C group were exposed to 1.1% isoflurane or 1.8% sevoflurane (equivalent to 0.5MAC)or air 4h.The brain of neonatal rats were perfused and embedded by paraffin,Caspase-3 positive expression in the SI cortex of brain was detected by immunohistochemistry staining.Besides,the fresh cortex was dissected at O h in C group and at 2h,4h in I group and S group,microtubule associated protein 1 B expression was detected by West blot staining.Results Caspase-3 positive cells in the SI cortex were increased by 561.23%in I group(t=4.45,P<0.01)and 194.46% in S group(t=5.17,P<0.01)when compared with C group,and increased by 124.45% in I group(P<0.05)when compared with S group.The MAP1B protein was increased by 557.15%at 2h(t=16.54 P<0.01)and 475.21% at 4h(t=32.97,P<0.01)in I group while increased by 693.11%at 2h(t=9.45,P<0.001)and 268.15% at 4h(t=2.79,P=0.049) in S group when compared with C group.In S group,MAP1B protein at 4h reduced by 53.65%(P<0.01) when compared with that at 2h.Conclusion 0.5 MAC isoflurane can induce more apoptosis in the cortex in the neonatal rats'brain at postnatal day 7 than sevoflurane.They can both significantly promote the expression of MAP1B in the cortex to start the self-reparation.

?Optic neuritis ( ON) is one of the most common causes of vision loss by neural eye diseases in youth and middle-aged. In the past, the diagnosis simply according to the risk position, which did not distinguish from the pathogenesis and clinical characteristics, can not meet the current clinical diagnosis and treatment needs. Combining with the etiology, clinical characteristics and prognosis, the latest classification of the current international diagnosis of ON are typical and atypical ON. Typical ON relates to multiple sclerosis ( MS ) or demyelinating disease of the central nervous system, it has a relatively good therapeutic effect and prognosis. Rather than, atypical ON has complex etiology, clinical manifestation, and the treatment and prognosis are also different. At present there are many international ON treatment guidelines with level I evidence-based medical evidence, but with different genetic background, geographical environment and ethnic groups, they are not been determined. China lacks of such a multicenter large sample, a wide range of research evidence. In this paper, we will summarize the progress of the diagnosis and treatment about ON, especially about the atypical ON, in order to provide some suggestions to further improve the standardization and individualization for clinical diagnosis and treatment on ON.

Afferent Pathways ; anatomy & histology ; Animals ; Female ; Ganglia, Spinal ; anatomy & histology ; Neurons, Afferent ; Rats ; Rats, Sprague-Dawley ; Urinary Bladder ; innervation

Objective To investigate the association of the two single nucleotide polymorphisms(SNPs) rs1386494 and G1463A of tryptophan hydroxylase 2 gene with depression in Yunnan Han population. Methods A case-control study Was designed by collecting 102 patients and 102 controls.Polymerase chain reaction-restriction fragment length polymorphisms(PCR-RFLP)technique Was used to detect the rs1386494 and G1463A polymorphisms.All patients were evaluated with Hamilton Rating Scale for Depression(HAMD),and scores were compared according to different genotype.Results 1.There were differences in genotype and allele frequency of rsl386494 in Yunnan Han population(X~2=4.300,P=0.038;X~2=4.067,P=0.044).The A allele frequency of rsl386494 in controls Was higher than in patients(P=0.044).2.No genotype of G1463A polymorphism was observed in all samples.3.No significant association genotype of rsl386494 with scores of HAMD Was observed(F=2.461,P=0.120).Conclusion The polymorphism of rsl386494 may be associated with the vulnerability of Yunnan Han population,and the A allele maybe the protective gene for depression.

Objective To investigate the effect of ketamine injected via the radicular arteries on spinal cord. Methods Twenty healthy mongrel dogs of both sexes weighing 12-18 kg were randomly divided into 2 groups ( n = 10 each): control group (group C) and ketamine group (group K). The animals were anesthetized with intravenous pentobarbital 30-35 mg/kg, fentanyl 50-100 μg and vecuronium 0.2 mg/kg and maintained with propofol ically ventilated after tracheal intubation. A catheter was inserted into T8 poster intercostal artery and advanced toward the opening of radicular artery which supplies the spinal cord. Ketamine 100 mg (in 2 ml of normal saline)was injected via the catheter in group K. Three hours after ketamine administration, the animals were sacrificed. A 1.5 cm long segment of spinal cord at the level of T8 was removed for microscopic examination and determination of the expression of NSE, S100β and Tau protein by immuno-histochemistry. Results There was no significant difference in the number of Nissl' s staining-negative neuronal cells and the expression of NSE, S100β and Tau protein in the spinal cord between the 2 groups ( P ＞ 0.05 ). Conclusion Ketamine injected via the radicular arteries does not induce spinal cord injury.

BACKGROUND:The levels of interleukin-1 (IL-1) and tumor necrosis factor-α (TNF-α) are increased during infectious brain edema, and are positively relevant to the degree of brain damage. However, whether TNF-α can enhance blood brain barrier (BBB) permeability remains unclear, especially in vitro.OBJECTIVE: To understand the changes and possible mechanism of the BBB permeability induced by TNF-α in vitro.DESIGN: Randomized controlled cell model study in vitro.SETTING:Department of Pediatrics, Xiangya Hospital, Central South University; Department of Biochemistry, Xiangya Medical College, Central South University.MATERIALS: Twenty 7-day-old healthy Sprague-Dawley rats, of clean grade and either gender, were provided by the Animal Center, Xiangya Hospital, Central South University. TNF-α was purchased from sigma Company; DMEM fluid medium and fetal bovine serum were purchased from Hyclone Company; Y-27632 was purchased from Alexis Company,and rabbit anti-human factor Ⅷ -related antigen was purchased from Zymed Company; Mouse anti-rat glial fibrillary acidic protein (GFAP) was purchased from Neomarkers. Other biochemical reagents were imported (Sigma Company).METHODS: This experiment was carried out in the Xiangya Hospital, Central South University between March 2004 and April 2005. Brain microvascular endothelial cells and astrocytes were co-cultured 10 days to set up rat models of BBB in vitro. Then, the cells were divided into 4 groups: model group(BBB models were prepared), TNF-α group ( BBB model incubated with 0.01 g/L TNF-α for 5 hours), Y-27632 pretreated group ( BBB model incubated with 30 μmol/L Y-27632 for 1 hour before 0.01g/L TNF-α challenge ) and Y-27632 control group (BBB models only incubated with Y-27632 as those in the Y-27632 pretreated group). The effect of TNF-α on BBB permeability was observed by detecting the 125 I -BSA, which passed through the inserts at each time point (30,60,120 and 240 minutes) using .γradioimmunoassay counter.MAIN OUTCOME MEASURES: The 125 I -BSA, which passed through the inserts in rat models of BBB at different time points after intervention.RESULTS: The 125 I -BSA, which passed through the inserts in rat models of BBB, was all significantly higher in the TNF-α group than in the other groups at 30, 60, 120 and 240 minutes after intervention, respectively (P ＜ 0.01), and reached the peak at 240 minutes; The 125 I -BSA, which passed through the inserts, was lower in the Y-27632 pre-treated group than in the TNF-α group at 30 and 60 minutes after intervention (P＜ 0.01). There was also significant difference in 125 I -BSA permeation between Y-27632 pretreated group and Y-27632 control group after 120 minutes (P ＜ 0.05).CONCLUSION: TNF-α can increase BBB permeability, and Y-27632 pretreatment can early reverse the effect of TNF-α on BBB permeability.