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- van de Sande-Bruinsma, Nienke, et al.
(författare)
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Antimicrobial drug use and resistance in Europe
- 2008
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Ingår i: Emerging Infectious Diseases. - : Centers for Disease Control and Prevention (CDC). - 1080-6040 .- 1080-6059. ; 14:11, s. 1722-30
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Tidskriftsartikel (refereegranskat)abstract
- Our study confronts the use of antimicrobial agents in ambulatory care with the resistance trends of 2 major pathogens, Streptococcus pneumoniae and Escherichia coli, in 21 European countries in 2000-2005 and explores whether the notion that antimicrobial drug use determines resistance can be supported by surveillance data at national aggregation levels. The data obtained from the European Surveillance of Antimicrobial Consumption and the European Antimicrobial Resistance Surveillance System suggest that variation of consumption coincides with the occurrence of resistance at the country level. Linear regression analysis showed that the association between antimicrobial drug use and resistance was specific and robust for 2 of 3 compound pathogen combinations, stable over time, but not sensitive enough to explain all of the observed variations. Ecologic studies based on routine surveillance data indicate a relation between use and resistance and support interventions designed to reduce antimicrobial drug consumption at a national level in Europe.
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- Moreira, TJTP, et al.
(författare)
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Reduced HO-1 protein expression is associated with more severe neurodegeneration after transient ischemia induced by cortical compression in diabetic Goto-Kakizaki rats
- 2007
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Ingår i: Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism. - : SAGE Publications. - 0271-678X. ; 27:10, s. 1710-1723
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Tidskriftsartikel (refereegranskat)abstract
- Pronounced hyperglycemia provoked by extradural compression (EC) of the sensorimotor cortex was recently described in the non-insulin dependent Goto—Kakizaki (GK) diabetic rat. Compared with control Wistar rats, GK rats exhibited more extensive brain damage after cortical ischemia at 48 h of reperfusion ( Moreira et al, 2007 ). We hypothesized that the enhanced brain injury in GK rats could be caused by differential regulation of the heme degrading enzyme heme oxygenase (HO)-1, known to interact with the expression of other target genes implicated in antioxidant defense, inflammation and neurodegeneration, such as superoxide dismutase (SOD)-1, −2, inducible nitric oxide synthase (iNOS), and tumor necrosis factor-α (TNFα). At 48 h after ischemia, relative mRNA expression of such target genes was compared between ipsilateral (compressed) and contralateral (uncompressed) hemispheres of GK rats, along with baseline comparison of sham, uncompressed GK and Wistar rats. Immunohistochemistry was performed to detect cellular and regional localization of HO-1 at this time point. Baseline expression of HO-1, iNOS, and TNFα mRNA was increased in the cortex of sham GK rats. GK rats showed pronounced hyperglycemia during EC and transient attenuation of regional cerebral blood flow recovery. At 48 h after reperfusion, HO-1 mRNA expression was 7- to 8-fold higher in the ischemic cortex of both strains, being the most upregulated gene under study. Heme oxygenase-1 protein expression was significantly reduced in diabetic rats and was found in perilesional astrocytes and rare microglial cells, in both strains.
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