Objective To investigate the infectious features of rubella virus (RV) JR 23 strain in central nervous system (CNS). Methods RV JR 23 strain infected human primary cerebral neural cell culture in vitro and Balb/c mice, which were given dexamethasone and cytoxan before infection, via peritoneal injection. Viral pathogenecity was observed postinfection and RV antigens were detected in human cerebral neural cells by IFA and immunohistochemical method. Cerebral tissues were observed by HE staining and ABC methods postinfection.Results JR 23 strain didn't produce cytopathic effect (CPE). The proliferation of JR 23 strain reached highest titer of 10 3TCID 50 /ml at 72 h postinfection and decreased gradually. RV antigens were positive in cerebral neural cells, especially around the nuclei. Focal cytopathic areas were observed in cerebral cortical area and so did neuron necrosis around by gliacytes formed stellitorsis, neuronophagia and glial nodule. RV antigens could be seen in all cerebral area, but most localized in cortical area. Pathological features were basically the same among the infected groups. The infection rates of de xamethasone, cytoxan group and the group without intervention were 60%、90% and 50%, repectively. Conclusion RV JR 23 strain is not cytocidal to human neural cells and the pathological lesions induced by JR 23 strain in CNS of mice are mainly focal or dotted neuron necrosis.

Objective To investigate the pathological changes of gastric antrum mucosa after Helicobacter pylori eradication.Methods Total 180 cases who suffered from epigastralgia and took the endoscopic examination were randomly divided into two groups,one was Hp eradication group which included 98 cases and given anti-Hp medication treatment,and the other was control group which included 82 cases and given an expectant treatment.At the end of the study,they took reexamination by gastroscope and tests on Hp by Giemsa dyeing & rapid urase detection and on gastric antrum pathological changes by HE dyeing.Results In treatment group,atrophic gastritis as well as intestinal metaplasia decreased significantly after Helicobacter pylori eradication,but in control group,no change of atrophic gastritis was found while intestinal metaplasia aggravated.Conclusion The eradication of Helicobacter pylori is able to decrease atrophic gastritis and intestinal metaplasia.

OBJECTIVE To explore the features,developing trend and factors of hospital infection in patients with iatrogenic injury.METHODS Retrospective surveys of hospital infections in 750 cases with iatrogenic injury were carried out in hospital between 2000 and 2007.RESULTS The incidence of hospital infection in patients with iatrogenic injury was 87.39%.Among them,hospital wound infection was the highest(87.39%),the second one was cavity infection(8.98%).The leading causative microorganisms were Gram-negative bacteria.CONCLUSIONS It is imperative to make effort to decvease the morbidity of hospital infections.We hope that the iatrogenic injury can be brought into the category of public health as soon as possible to enhance the medical care service and secure safty and health of the patients.

Child ; China ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; diagnosis ; therapy

Animals ; Drugs, Chinese Herbal ; therapeutic use ; Hepatitis B, Chronic ; complications ; Humans ; Liver Cirrhosis ; drug therapy ; etiology ; prevention & control ; Phytotherapy

Objective To investigate the status of nutritional risk and clinical outcome in children hospitalized in the general surgical department, which can provide basis for clinical nutritional support and selecting the screening tool. Methods Nutritional risk screening was performed on 506 children hospitalized in the general surgical department by using the Paediatric Yorkhill Malnutrition Score (PYMS). The data on incidence of complications, parenteral nutritional support during hospitalization, length of hospital stay and total hospital expenses were recorded. Results Of the 506 cases, 64.6%(327/506) had low nutritional risk, 27.1%(137/506) had moderate nutritional risk, and 8.3%(42/506) had high nutritional risk. Hepatic and gall diseases were the most common types of moderate nutritional risk (55.2%, 16/29), intestinal obstruction were the most common types of high nutritional risk (23.1%, 6/26). The incidence of complications, parenteral nutritional support during hospitalization, length of hospital stay and total hospital expenses were 10.2%(14/137), 21.9%(30/137), (9.54±4.95) d, (6 899.13±3 281.18) yuan RMB and 21.4%(9/42), 35.7%(15/42), (10.60±7.25) d, (7 521.64±6 026.23) yuan RMB in moderate or high nutritional risk children, and 0.9%(3/327), 3.1%(10/327), (17.17 ± 4.17) d, (4 691.96 ± 3 114.43) yuan RMB in low nutritional risk children, and there were significant differences (χ2/F=18.665-64.554, P<0.05). Conclusions Moderate or high nutritional risk is seen in children hospitalized in the surgical department. High nutritional risk score is correlated with adverse clinical outcome. PYMS can be used for nutritional risk screening in hospitalized children.

Objective:To establish the quality standard for Kechuanning granules. Methods: A TLC method was used for the qualitative study on the main ingredients, Radix stemonae,ephedra and bitter almond. An HPLC method was used to determine the con-tents of ephedrine hydrochloride,pseudoephedrine hydrochloride and amygdalin. The separation of targeted compounds was performed on a Tech Mate C18-ST column (250 mm × 4. 6 mm,5 μm) . The mobile phase consisted of methanol(A) and 0. 1% phosphoric acid (B) with gradient elution at a flow rate of 1. 0 ml·min-1. The detection wavelength was 207nm and the column temperature was 35℃. Results:The spots in TLC were quite clear without any interference from negative control. The linear relationship of ephedrine hydrochloride,pseudoephedrine hydrochloride and amygdalin was 1. 826-182. 600μg·ml-1( r=0. 9997),1. 848-184. 815μg·ml-1 (r=0. 9997) and 2. 981-298. 069 μg·ml-1(r=0. 9996),respectively. The average recovery was 97. 00%,97. 40% and 98. 30%(RSD=3.7%,2.5%,1.6%)(n=9),respectively. Conclusion: The method is sensitive,accurate,simple and reproducible,which can be used for the quality control of Kechuanning granules.

The liquid-chromatography-mass technology was used in the metabolomic analysis of mouse's blood 1 hour after exhaustive exercise,in order to explore the potential mechanism of Rhodiola in fatigue elimination of exhaustive exercise mouse.The exhaustive mouse model was made by loaded-swimming.A total of 24 mice were randomly divided into theRhodiola + exercise group,exercise group andno-exercise group.The dose of Rhodiola was 0.4375 g·kg-1·d-1.The loaded-swimming was conducted after two successive weeks of medication.Blood was collected 1 h after swimming for the sample preparation.The enzyme assay and anthrone colorimetry were used to test blood lactate acid and glucose,respectively.UFLC-Q-TOF was used to detect metabolic profiles of each group.The principal component analysis (PCA),orthogonal partial least squares discriminant analysis (OPLS-DA) and heat map analysis were used to compare differences among groups with score chart and to obtain the characteristics biomarkers by load chart.The results showed that the blood lactate acid level of theRhodiola+ exercise group was significantly lower than that of theexercise group.And the glucose level of theRhodiola+ exercise group was significantly higher than that of theexercise group.The metabolomic analysis showed that there were no obvious changes on 1,25-(OH)2D3,diacylglycerol (DG) and inositol triphosphate (IP3).All three materials in theRhodiola + exercise group were significantly lower than those of theexercise group.They were much closer to theno-exercise group.And all three materials were related to the increasing of muscle tension.It was concluded that Rhodiola had the function of promoting fatigue eliminating.This effect may be related to cell membrane protection,regulation of 1,25-(OH)2-D3→IP3,DG pathway,and relieving of muscle tension after exercises.