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Träfflista för sökning "WFRF:(Ahmadi K) srt2:(2006-2009)"

Sökning: WFRF:(Ahmadi K) > (2006-2009)

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  • Garcia, J., et al. (författare)
  • Association of insulin-like growth factor-1 receptor polymorphism in dementia
  • 2006
  • Ingår i: Dementia and Geriatric Cognitive Disorders. - : S. Karger AG. - 1420-8008 .- 1421-9824. ; 22:5-6, s. 439-444
  • Tidskriftsartikel (refereegranskat)abstract
    • There is an increasing interest in how oxidative stress can cause cells to go into apoptosis in both normal ageing and in neurodegenerative disorders. Previous research has implicated insulin-like growth factor-1 (IGF-1) as being involved in the pathogenesis in Alzheimer's disease (AD) by protecting the neurons through reducing neuronal susceptibility to oxidative stress. IGF-1 receptor (IGF-1R) polymorphisms alter cerebral and systemic levels of IGF-1 and may alter the function of the receptor. We genotyped the IGF-1R gene by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) to assess whether this gene polymorphism can be linked to dementia. We used leukocyte DNA from 72 patients with AD, 75 patients with vascular dementia (VaD), 14 patients with mixed dementia (AD+VaD), and a control group consisting of 209 individuals without a history of progressive neurological disorders. Analysis of gene frequency for gender revealed a significant difference between female VaD patients and female controls carrying at least one A allele (OR = 1.8, CI 95% 1.1-2.9, p = 0.02), but not for male patients. In addition, we found a strong tendency to a difference between all cases of female dementia patients and controls carrying the A allele (OR = 1.5, CI 95% 0.99-2.2, p = 0.054). Our results suggest that the A allele of IGF-1R may be involved in the pathogenesis of VaD in females. Copyright © 2006 S. Karger AG.
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3.
  • Prokopenko, Inga, et al. (författare)
  • Variants in MTNR1B influence fasting glucose levels
  • 2009
  • Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1546-1718 .- 1061-4036. ; 41:1, s. 77-81
  • Tidskriftsartikel (refereegranskat)abstract
    • To identify previously unknown genetic loci associated with fasting glucose concentrations, we examined the leading association signals in ten genome-wide association scans involving a total of 36,610 individuals of European descent. Variants in the gene encoding melatonin receptor 1B (MTNR1B) were consistently associated with fasting glucose across all ten studies. The strongest signal was observed at rs10830963, where each G allele (frequency 0.30 in HapMap CEU) was associated with an increase of 0.07 (95% CI = 0.06-0.08) mmol/l in fasting glucose levels (P = 3.2 x 10(-50)) and reduced beta-cell function as measured by homeostasis model assessment (HOMA-B, P = 1.1 x 10(-15)). The same allele was associated with an increased risk of type 2 diabetes (odds ratio = 1.09 (1.05-1.12), per G allele P = 3.3 x 10(-7)) in a meta-analysis of 13 case-control studies totaling 18,236 cases and 64,453 controls. Our analyses also confirm previous associations of fasting glucose with variants at the G6PC2 (rs560887, P = 1.1 x 10(-57)) and GCK (rs4607517, P = 1.0 x 10(-25)) loci.
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