Title |
Genetic predisposition to higher production of interleukin-6 through -174 G > C polymorphism predicts global cognitive decline in oldest-old with cognitive impairment no dementia
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Published in |
Arquivos de Neuro-Psiquiatria, November 2015
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DOI | 10.1590/0004-282x20150137 |
Pubmed ID | |
Authors |
Vanessa G. Fraga, Henrique C. Guimarães, Antônio L. Teixeira, Maira T. Barbosa, Elvis C. C. Mateo, Maria G. Carvalho, Paulo Caramelli, Karina B. Gomes |
Abstract |
Interleukin 6 (IL-6) is a pro-inflammatory cytokine upregulated in neurodegenerative contexts. The polymorphism IL-6 -174 G > C influences release levels of this cytokine. We aimed to evaluate the influence of IL-6 -174 G > C on global cognitive score of a group with cognitive impairment no dementia in one year of follow-up.Methods The subjects were categorized in two groups: short-term decline in global cognitive score and those with short-term stability or improvement. IL-6 174 G > C information were compared among these groups.Results We observed that individuals with cognitive impairment no dementia with GGlowergenotype were more frequent among global cognitive score non-decliners while carriers of at least one Chigherallele were more frequent in the group with global cognitive score decliners (p = 0.012; RR = 3.095 IC95%= 1.087-8.812).Conclusion These results suggest that the higher expression of IL-6 gene may be an independent risk factor for cognitive decline among individuals with cognitive impairment no dementia. |
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United States | 1 | 50% |
Unknown | 1 | 50% |
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Members of the public | 2 | 100% |
Mendeley readers
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Unknown | 41 | 100% |
Demographic breakdown
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Student > Doctoral Student | 8 | 20% |
Student > Ph. D. Student | 6 | 15% |
Other | 5 | 12% |
Student > Postgraduate | 4 | 10% |
Student > Bachelor | 3 | 7% |
Other | 6 | 15% |
Unknown | 9 | 22% |
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Nursing and Health Professions | 5 | 12% |
Psychology | 5 | 12% |
Biochemistry, Genetics and Molecular Biology | 2 | 5% |
Neuroscience | 2 | 5% |
Other | 4 | 10% |
Unknown | 13 | 32% |