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History of cigarett...
History of cigarette smoking in cognitively-normal elders is associated with elevated cerebrospinal fluid biomarkers of oxidative stress
- Article/chapterEnglish2014
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LIBRIS-ID:oai:gup.ub.gu.se/204217
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https://gup.ub.gu.se/publication/204217URI
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https://doi.org/10.1016/j.drugalcdep.2014.06.030DOI
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Background: Cigarette smoking in adults is associated with abnormalities in brain neurobiology. Smoking-induced central nervous system oxidative stress (OxS) is a potential mechanism associated with these abnormalities. The goal of this study was to compare cognitively-normal elders on cerebrospinal fluid (CSF) levels of F-2-isoprostane biomarkers of OxS. Methods: Elders with a lifetime history of smoking (smokers; n = 50; 75 +/- 5 years of age; 34 +/- 28 pack-years; approximately 12% were actively smoking at the time of study) were compared to never-smokers (n = 61; 76 +/- 6 years of age) on CSF iPF(2 alpha)-III and 8,12, iso-iPF(2 alpha)-VI F-2-isoprostanes levels. F-2-isoprostanes levels were quantitated with HPLC-atmospheric pressure chemical ionization-tandem mass spectrometry. Associations between F-2-isoprostanes levels, hippocampal volumes, and cigarette exposure measures were also evaluated. Results: Smokers showed higher iPF(2 alpha)-III level than never-smokers. An age x smoking status interaction was observed for 8,12, iso-iPF(2 alpha)-VI, where smokers demonstrate a significantly greater concentration with increasing age than never-smokers. In smokers only, higher 8,12, iso-iPF(2 alpha)-VI concentration was associated with smaller hippocampal volume, and greater iPF(2 alpha)-III level was related to greater pack years. Conclusions: This is the first study to demonstrate that a history of cigarette smoking in cognitively-normal elders was associated with significantly elevated CSF F-2-isoprostane levels and greater age-related increases in F-2-isoprostanes, and that higher F-2-isoprostane levels in smokers were related to smaller hippocampal volume. These findings provide additional novel evidence that a history of chronic smoking during adulthood is associated with adverse effects on the human brain that are potentially enduring even with extended smoking cessation.
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Mattsson, Niklas,1979Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology(Swepub:gu)xmattn
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Weiner, M. W.
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Korecka, M.
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Trojanowski, J. Q.
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Shaw, L. M.
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Göteborgs universitetInstitutionen för neurovetenskap och fysiologi
(creator_code:org_t)
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In:Drug and Alcohol Dependence: Elsevier BV142, s. 262-2680376-8716
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