Oxidative stress has been implicated in brain injury after ischemia, which is a complex cascade. These oxidants produced by oxidative stress are directly involved in oxidative damage with cellular macromolecules such as lipids, proteins and nucleic acids, which lead to cell death. Oxidants are also mediators in signaling involving mitochondria pathway, DNA repair enzymes, and transcription factor that may lead to apoptosis after cerebral ischemia. Antioxidangt enzymes (such as superoxide dismutase,etc) provide useful tools in dissecting the events involving oxidative stress in signaling and damage in ischemic brain injury. This review focuses on the mechanisms of oxidative stress during brain ischemia.

Objective:To discuss relativity of different TCM syndrome with sex,age and laboratory indices in 265 cases of diabetic nephropathy renal failure,and this work is meaningful to open out the naure of TCM syndrome.Methods:The research proceeded the questionary of diabetic nephropathy established according to task group.Including commonly instances,four diagnostic methods information of TCM and correlative laboratory indices.Canonical correlative analysis was adopted to research the relativity of laboratory indices with different TCM syndrome.Results:The results of canonical correlative analysis displayed that phlegm-dampness and BMI,dampness-turbid and creatinine clearance rate,deficiency of yin and glycosylated hemoglobin had pertinence(P

Objective To study the difference of IGF-1,Bcl-2,survivin and Ki-67 protein expression in reactive and neoplastic astrocytes and the significance of them.Methods Immunohistochemistry and tissue microarray techniques were used to determinate the expression of IGF-1,Bcl-2,survivin and Ki-67 protein in normal brain tissues, astrocytes proliferation,low-grade astrocytomas, and high-grade astrocytomas.Results The expression of IGF-1,Bcl-2,survivin and Ki-67 protein were all negative in control group.The positive expression rates of them in reactive astrocytes were 28.9%, 26.7%, 26.7% and 22.2%,respectvely; and in low-grade astrocytomas were 63.8%, 50.0%, 53.2%,70.2%; in high-grade astrocytomas were 88.9%, 79.2%, 88.1%,95.2%.IGF-1,Bcl-2,survivin and Ki-67 all had significant difference among the three experimental groups(P

OBJECTIVE To describe the epidemiology of nosocomial infections in children′s hospital.METHODS We performed a prospective and retrospective analysis to determine the prevalence of nosocomial infection.Data were collected from 2000 to 2007 in hospitalized cases.RESULTS The incidence of nosocomial infections was 3.43%,from then 40.27% were upper respiratory infections,28.94% of gastrointestinal infections,and 17.61%% bronchitis and pneumonia.The incidence had a tendency decreaseing P

AIM　To study the effects of vitamin E succinate (VES) on the cell growth and the DNA synthesis of human gastric carcinoma cell (SGC-7901). METHODS　The growth curve was determined with counting viable cell numbers. The colony formations were counted with Giemsa dye staining. The cell cycle was analyzed using flow cytometry (FCM) and the DNA synthesis was observed with the 3H-TdR incorporation method. RESULTS　VES could inhibit the growth and colony formation of SGC-7901 cells. Growth curve display：after SGC-7901 cells were treated with 5 mg*L-1、10 mg*L-1 and 20 mg*L-1 VES for seven days, the inhibition rate are 41.2%、98.3% and 100%, respectively. The colony formation of SGC-7901 cell at 24 h was inhibited 6.7%、50.4%、87.2%, and at 48 h was 24.7%、73.4%、100%, respectively. FCM analysis revealed that VES could decrease the percentage of cells in G2-M phase after treated 48 h in a dose-dependent manner, while increase the percentage of cells in S pheise. The assays of 3H-TdR incorporation into DNA showed obvious inhibition dose-dependently after exposure to VES for 48 h. CONCLUSION　VES could inhibit gastric carcinoma cell growth by arresting DNA synthesis in vitro.

AIM To study the effects of vitamin E succinate (VES) on the cell growth and the DNA synthesis of human gastric carcinoma cell (SGC 7901). METHODS The growth curve was determined with counting viable cell numbers. The colony formations were counted with Giemsa dye staining. The cell cycle was analyzed using flow cytometry (FCM) and the DNA synthesis was observed with the 3H TdR incorporation method. RESULTS VES could inhibit the growth and colony formation of SGC 7901 cells. Growth curve display:after SGC 7901 cells were treated with 5 mg?L -1 、10 mg?L -1 and 20 mg?L -1 VES for seven days, the inhibition rate are 41 2%、98 3% and 100%, respectively. The colony formation of SGC 7901 cell at 24 h was inhibited 6 7%、50 4%、87 2%, and at 48 h was 24 7%、73 4%、100%, respectively. FCM analysis revealed that VES could decrease the percentage of cells in G 2 M phase after treated 48 h in a dose dependent manner, while increase the percentage of cells in S pheise. The assays of 3H TdR incorporation into DNA showed obvious inhibition dose dependently after exposure to VES for 48 h. CONCLUSION VES could inhibit gastric carcinoma cell growth by arresting DNA synthesis in vitro .

Objective:To observe the clinical effect of Tuina(Chinese therapeutic massage)combined with Bu Zhong Yi Qi Tang(Middle Jiao-supplementing and Qi-boosting Decoction)in the treatment of rectocele of Qi sinking due to spleen deficiency.Methods:A total of 108 patients with rectocele(grades Ⅰ and Ⅱ)were randomly divided into a Chinese medicine group and a Tuina+Chinese medicine group,with 54 cases in each group.Both groups were treated with Bu Zhong Yi Qi Tang,and the Tuina+Chinese medicine group was treated with additional Tuina manipulation.The score of clinical symptoms and grade of rectocele were observed and compared between the two groups.Results:After treatment,39 cases were cured,10 cases were effective,and 5 cases failed in the Tuina+Chinese medicine group,making a total effective rate of 90.7%.In the Chinese medicine group,26 cases were cured,16 cases were effective,and 12 cases failed,making a total effective rate of 77.8%.The efficacy difference between the two groups was statistically significant,checked by the rank-sum test(P＜0.05).After treatment,the grades of rectocele in the two groups were statistically different from those before treatment(P＜0.05),and the difference between the two groups was statistically significant(P＜0.05).After treatment,the score of each item and the total score of traditional Chinese medicine symptoms in the two groups were lower than those before treatment,and the differences within the group were statistically significant(P＜0.05).The score of each item and the total score of the Tuina+Chinese medicine group were lower than those of the Chinese medicine group,and the differences between the two groups were statistically significant(P＜0.05).Conclusion:Tuina plus Bu Zhong Yi Qi Tang has better clinical efficacy than Bu Zhong Yi Qi Tang alone in the treatment of rectocele of Qi sinking due to spleen deficiency.

AIM: To investigate the effect of Sini decoction (SND)on the ultrastructure of small intestinal epithelial cells in rats with intestinal ischemia-reperfusion. METHODS: Thirty-two Sprague-Dawley rats of both sexes were randomly divided into 4 groups: (1) Control group in which sham operation was performed; (2) Model group in which intestinal I/R was produced by clamping super mesenteric artery(SMA) for 1 hour and declamping SMA for 3 hours; (3) SND1 group in which SD (0.6 g/200 g rat) was given via stomach tube 3 d before intestinal I/R; (4) SND2 group in which SD (1.2 g/200 g rat)was given via stomach tube 3 d before intestinal I/R. A strip of small intestine was taken from distal end of ileum for electron microscopic examination. The two-dimensional structural parameters and three-dimensional structural parameters of mitochondria were calculated. RESULTS: (1)Morphological changes of small intestine: In control group, epithelial cells were orderly arranged, with normal mitochondria and intestinal villi. In model group, the gaps between epithelial cells widened. There were a lot of apoptotic cells. Microvilli were short and swelled. Mitochondria were swelled obviously with broken ridges. Endoplasmatic reticulum was severely dilated. In SND1 and SND2 groups, microvilli and epithelial cells were orderly arranged relatively, mitochondria was slightly swelled. (2) Structural parameters of mitochondria: In model group, there were the least mitochondria and the swelling of mitochondria was severe. In SND1 and SND2 groups, the mitochondria was more than that of model group and the swelling were slight. CONCLUSION: Sini decoction can protect small intestine from ischemia-reperfusion injury without dose-dependent effect.

Objective To evaluate the incidence of central line-associated bloodstream infection(CLABSI) among critically ill children, and provide basis for making preventive and control measures.Methods Prospective surveillance was performed to monitor CLABSI among children (including neonates) with central lines in 7 children's intensive care units(ICUs) from January 2012 to December 2015.Results Of 37 712 hospitalized patients, the overall length of hospital stay were 268 531 days, the overall central line-day was 57 639, utilization rate of central line was 21.46%;126 patients had CLABSI, CLABSI rate per 1 000 central line-days was 2.19, there was no significant difference in the CLABSI rate among each year(P>0.05);CLABSI rate in the third quarter was higher than that in other quarters(all P<0.05,compared with the first quarter,RR[95%CI]=1.98[1.20, 3.29]);CLABSI rates were different among different types of ICUs, surgical neonatal ICU (SNICU)(6.12/1 000 central line-days) was higher than other types of ICUs (all P<0.05, compared with pediatric ICUs[PICUs], RR[95%CI]=3.02[1.51-6.04]).126 patients with CLABSI were isolated 139 strains of pathogenic bacteria, the main pathogens were Klebsiella pneumoniae (20.86%) and Staphylococcus epidermidis (15.83%).Conclusion Critically ill children in SNICU are high risk population of CLABSI infection, intensified intervention measures should be developed for the department , so as to reduce CLABSI effectively.

OBJECTIVE To determine the extra-lengh of stay and the economic loss for nosocomial infections of group A rotavirus in children′s hospital. METHODS We performed a 1∶1 case-control study to determine the cost of nosocomial rotavirus infection. Data of hospitalized cases were collected from Jan 1 2007 to Dec 31 2007. RESULTS The average medical expenses in case and control group were 7589 yuan and 5319 yuan,the average increased cost per case was 2269 yuan,the expenses for medicine,treatment,laboratory test and bed accounted for 47.42%,19.96%,17.10% and 9.03%,respectively (P