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- Agardh, Carl-David, et al.
(author)
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Expression of antioxidant enzymes in rat retinal ischemia followed by reperfusion.
- 2006
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In: Metabolism, Clinical and Experimental. - : Elsevier BV. - 1532-8600. ; 55:7, s. 892-898
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Journal article (peer-reviewed)abstract
- To evaluate the expression and protein levels of antioxidant enzymes in the rat retina exposed to oxidative stress induced by ischemia-reperfusion injury. Retinal ischemia was induced in female Wistar rats by ligation of the optic nerve and vessels behind the left eye bulb, and was followed by reperfusion for 0, 3, 6, or 24 hours. The right eye served as control. RNA and protein were extracted simultaneously from each retina. Expressions of the endogenous antioxidant enzymes glutathione peroxidase (GPx1), catalase (CAT), copper/zinc superoxide dismutase, manganese superoxide dismutase, and the catalytic subunit of glutamylcysteine ligase (GCLc) were analyzed with real-time reverse transcription polymerase chain reaction and related to the endogenous control cyclophilin B. Protein levels were measured with Western blot analysis. During the early phase (0 or 3 hours) of reperfusion, no changes were seen in enzyme expression. After 6 hours, GCLc expression increased by a factor of 1.14 (P =.034), followed by a decline of 0.80 after 24 hours (P =.00004), according to the comparative Ct method. After 24 hours of reperfusion, GPx1 expression increased by a factor of 1.14 (P =.028), and CAT had decreased by 0.82 (P =.022). Expressions of copper/zinc superoxide dismutase and manganese superoxide dismutase showed a tendency toward a decrease by factors of 0.86 (P =.055) and 0.88 (P =.053), respectively, after 24 hours. Protein levels did not differ for any of the antioxidants, regardless of reperfusion time. The slightly increased messenger RNA expression of GPx1 after 24 hours of reperfusion with a concomitant very modest decrease in CAT and GCLc expression and no change in protein levels indicate a very modest, if any, response to oxidative stress generated by ischemia followed by reperfusion in rat retina.
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| 2. |
- Agardh, E.E, et al.
(author)
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Socio-economic position at three points in life in association with type 2 diabetes and impaired glucose tolerance in middle-aged Swedish men and women
- 2007
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In: International Journal of Epidemiology. - : Oxford University Press (OUP). - 0300-5771 .- 1464-3685. ; 36:1, s. 84-92
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Journal article (peer-reviewed)abstract
- BackgroundIt has been suggested that low socio-economic position(SEP) during childhood and adolescence predicts risk of adulttype 2 diabetes. We investigated the associations between type2 diabetes and childhood SEP (fathers’ occupational position),participants’ education and adult SEP (participants’occupational position). To determine possible independent associationsbetween early SEP (fathers’ occupational position andparticipants’ education) and disease, we adjusted foradult SEP and factors present in adult life associated withtype 2 diabetes. MethodsThis cross-sectional study comprised 3128 men and 4821women aged 35–56 years. All subjects have gone througha health examination and answered a questionnaire on lifestylefactors. At the health centre, an oral glucose tolerance testwas administered and identified 55 men and 52 women with previouslyundiagnosed type 2 diabetes. Relative risks (RRs) with 95% CIswere calculated in multiple logistic regression analyses. ResultsThe age-adjusted RRs of type 2 diabetes if having afather with middle occupational position were 2.3 [Confidenceinterval (CI:1.0–5.1) for women and, 2.0 (CI:0.7–5.6)for men]. Moreover, low education was associated with type 2diabetes in women, RR = 2.5 (CI:1.2–4.9). Low occupationalposition in adulthood was associated with type 2 diabetes inwomen, RR = 2.7 (CI:1.3–5.9) and men, RR = 2.9 (CI:1.5–5.7).The associations between early SEP and type 2 diabetes disappearedafter adjustment for adult SEP and factors associated with type2 diabetes. ConclusionThe association between type 2 diabetes and low SEPduring childhood and adolescence in middle-aged Swedish subjectsdisappeared after adjustment for adult SEP and adult risk factorsof diabetes.
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| 5. |
- Bekris, L. M., et al.
(author)
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GAD65 autoantibody epitopes in adult patients with latent autoimmune diabetes following GAD65 vaccination
- 2007
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In: Diabetic Medicine. - : Wiley. - 1464-5491 .- 0742-3071. ; 24:5, s. 521-526
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Journal article (peer-reviewed)abstract
- Aims Subcutaneous injection of recombinant human GAD65 (rhGAD65) in patients with latent autoimmune diabetes in adults (LADA) correlates with an increase in C-peptide levels. In this study we analysed the effect of rhGAD65 administration on the GAD65-specific autoimmune response. Methods Longitudinal serum samples obtained from LADA patients (n = 47) who received 4, 20, 100 or 500 mu g alum-formulated rhGAD65 or placebo by subcutaneous injection twice (4 weeks apart) were analysed for their epitope recognition using GAD65-specific recombinant Fab and GAD65/67 fusion proteins. Results Overall, minor changes in the epitope pattern were observed using either approach. Only in the 500-mu g dosage group was an increase in GAD65Ab level associated with a significant increase in the binding to a conformational epitope located at the middle part of GAD65. Conclusions Our data suggest that the apparent beneficial effects of 20 mu g alum-formulated recombinant human GAD65 is not explained by changes in the GAD65Ab epitope pattern.
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| 6. |
- Sidorchuk, Anna, et al.
(author)
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Socioeconomic differences in lung cancer incidence : a systematic review and meta-analysis
- 2009
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In: Cancer Causes and Control. - : Springer Science and Business Media LLC. - 0957-5243 .- 1573-7225. ; 20:4, s. 459-471
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Research review (peer-reviewed)abstract
- OBJECTIVE To investigate the associations between various socioeconomic indicators and lung cancer incidence. METHODS We searched PubMed and EMBASE databases for studies on socioeconomic position (SEP) and lung cancer incidence published through October 2007. Random-effect model was used to pool the risk estimates from the individual studies. We stratified the analysis by adjustment strategy to investigate the influence of smoking on socioeconomic gradient in lung cancer incidence. RESULTS Out of 3,288 citations, we identified 64 studies eligible for inclusion. Compared to the highest SEP level, we observed an overall increased risk in lung cancer incidence among people with low educational SEP (61%), low occupational SEP (48%), and low income-based SEP (37%). The negative social gradient for lung cancer incidence remained for most of the possible sets of pooled estimates obtained in subgroup analyses for occupational and educational SEP with less consistency for SEP based on income in studies adjusted and unadjusted for smoking. No evidence of publication bias was apparent. CONCLUSION Lung cancer incidence was associated with low educational, occupational, and income-based SEP. The association, adjusted or unadjusted for smoking, points out the importance of social position to be addressed in all discussions on cancer preventive measures.
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