OBJECTIVE To study the distribution and drug-resistance status of pathogens in surgically infective specimen in Renmin Hospital of Qichun County and provide the reference for clinically reasonable use of antibiotics.METHODS The infective specimen were collected to perform bacterial culture.The routine methods were adopted to identify pathogenic bacterium.Susceptibility testing was performed by K-B method.RESULTS Among 322 strains from surgically infective specimen,Staphylococcus aureus,Escherichia coli and Pseudomonas aeruginosa,ranking the top three,accounted for 25.2%,15.8% and 13.0%,respectively.The detection rate of meticillin-resistant S.aureus(MRSA) was 32.1%.And that of meticillin-resistant coagulase negative Staphylococcus(MRCNS) was 33.3%.That of extended spectrum ?-lactamases(ESBLs) producer in E.coli and Klebsiella pneumoniae was 34.5%.Various pathogenic bacterium had been resistant to antibiotics to different extents.100.0% of Gram-positive cocci were sensitive to vancomycin.The sensitivity rate to imipenem in Gram-negative bacilli was 19.0-100.0%.CONCLUSIONS Drug resistance variesd from pathogenic bacterium in surgical infection.The clinician should reasonably choose antibiotics according to results of bacterial culture to avoid occurrence and prevalence of drug-resistance bacterium.

Objective To establish an ideal focal cerebral ischemia reperfusion model in monkeys.Methods Adult healthy rhesus monkeys(Macaca mulatta) 12 cases(male 6 and female 6),aged 4-7 years and weighted 4.8-7.5kg.were used in this study.The middle cerebral artery occlusion/reperfusion(MCAO/R) model was established by inserting a standard micro-balloon catheter intraluminally from the carotid common artery or femoral artery into the proximal segment of the middle cerebral artery(MCA).The regional cerebral blood flow of MCA was occluded by expanding the micro-balloon to cause ischemia,and withdrawing the micro-ballon catheter to reperfuse the MCA.The MCAO/R model was evaluated by angiography,magnetic resonance angiography(MRA),magnetic resonance imaging(MRI),tetrazolium chloride(TTC) staining and neurological behavoral function scores.Results By inserting a micro-balloon catheter intraluminally from the carotid common artery or femoral artery into the MCA,the micro-balloon catheter could be inserted into the MCA to occlude blood flow,and no image of MCA shown on TV screen.In MCA blood flow supplied area,magnetic resonance T1,T2 and DWI showed high signals,TTC staining showed cerebral ischemic infarction,and correspondly the monkeys showed neurological function disorders.This method used a simple operatire procedure had a high successful rate,and could be repeated.Conclusion We showed ideal method to establish the MCAO/R model in monkeys by inserting intraluminally a micro-balloon catheter into the MCA.

Objective To study the correlation between renal function and arterial stiffness of Uighur population over 35 years old in Xinjiang area. Methods From October 2007 to March 2010, four-stage stratified random sampling method was applied to collect a total of 4312 Uighur people over 35 years old in Urumqi, Karamay, Fukang, Turpan area, Hotan prefecture, Yili Kazak autonomous prefecture and Altai prefecture. The data of these 4312 general urban and rural Uygur residents were complete. Simplified MDRD formula was used to calculate the estimate glomerular filtration rate (eGFR). Arm-ankle pulse wave velocity (b-aPWV) of both sides was measured and the average value was used in correlation analysis with eCFR, and then the associated risk factors were adjusted. Results The eGFR was negatively correlated with b-aPWV (r=-0.174, P<0.01). Multiple linear regression showed that after adjusting some risk factors such as age, sex, body mass index, systolic blood pressure, diastolic blood pressure, waist circumference, hip circumference, uric acid, fasting blood glucose, total cholesterol, triglycerides, low density lipoprotein, eGFR was still negatively correlated with b-aPWV (P=0.012). Conclusions In Uygur population over 35 years old in Xinjiang, the glomerular filtration rate is negatively correlated with arterial stiffness.

Objective To establish the three-dimensional (3D) statistical shape model (SSM) of the foot, so as to reveal the 3D foot shape variations. Methods Foot data from 50 normal Chinese young males were used for 3D statistical shape modelling. Steps, including mesh registration of foot surface, axis alignment and principal component (PC) analysis (dimension reduction), were performed to obtain the parameterized foot shape (mean shape and standard deviation of PC). Results Through the principal component analysis (PCA), the 3D foot shape varied in the length and width (PC1, 48.01%), arch and dorsal height (PC2, 11.38%), and hallux abduction-adduction position (PC3, 7.48%). Conclusions Based on the parameterised 3D foot SSM, these datasets can be applied into the population-based shoe last manufacture, orthotics customization and quick diagnosis of foot disorders in clinic.

Objective:To summarize the clinical characteristics and prognosis of acute hyperextension spinal cord injury (SCI) in children, and to provide some recommendations for the treatment and prevention of this disease.Methods:Reviewed the data of children of SCI after sustained or repeated hyperextension of the spine at Wuhan Union Hospital and Wuhan Children's Hospital from September 2010 to September 2020. According to the American Spinal Injury Association impairment scale (AIS grade), the patients were divided into complete SCI group and incomplete SCI group. The age, symptoms and evolution after injury, neurological level of injury, imaging data, laboratory examination data, prognosis and complications of the two groups were analyzed. Retrospectively summarize the characteristics of this type of injury.Results:Forty-four cases of acute hyperextension SCI in children were included. Their age ranged from 3 to 10 years old, 95% of them were under 8 years old and 95% of them were female. There was no significant difference in age at injury and time of dance training between children with complete SCI and incomplete SCI. Back and leg pain, lower limb weakness or paresthesia, and rapidly progress to complete or incomplete SCI in a short period were typical symptoms. All blood test results anddiagnostic analysis of cerebrospinal fluid were unremarkable or negative. There was no fracture or dislocation in the whole spine. Magnetic resonance imaging showed a longitudinally extended intramedullary high-intensity signal in the thoracolumbar spinal cord. Complete SCI accounted for 60% of all cases, and the prognosis was poor with spinal cord atrophy and various complications.Conclusion:Children younger than 10 years old after sustained or repeated hyperextension of the spine may suffer acute hyperextension SCI. Children with complete SCI have poor prognosis and serious complications. Therefore, prevention of this type of injury is the best strategy.

At present, there are still about 250 million people with chronic hepatitis B virus (HBV) infection around the world, which seriously threatens human life and health. Chronic hepatitis B (CHB) can develop into liver diseases such as liver fibrosis, liver cirrhosis, and hepatocellular carcinoma; however, there is still a limited number of antiviral drugs and an extremely low cure rate in clinical practice, and thus it is urgent to develop new antiviral drugs. HBV has strong hepatotropism and only infects a few primates such as humans and chimpanzees under natural conditions. Whether immune response (innate immunity and adaptive immunity) can effectively recognize and eliminate or inhibit HBV is an important factor leading to different outcomes after virus infection, and cytokines play an important immunoregulatory role in this process. This article summarizes and discusses the research advances in some key cytokines in CHB infection and treatment.