Effect of Cigarette Smoking on a Marker for Neuroinflammation: A [
| Autor: | Arthur L, Brody, Robert, Hubert, Ryutaro, Enoki, Lizette Y, Garcia, Michael S, Mamoun, Kyoji, Okita, Edythe D, London, Erika L, Nurmi, Lauren C, Seaman, Mark A, Mandelkern |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male Nicotine Adolescent Genotype Cigarette Smoking Radioligand Assay Young Adult Receptors GABA Acetamides Humans Aged Inflammation Functional Neuroimaging Phenyl Ethers Brain Middle Aged Case-Control Studies Positron-Emission Tomography behavior and behavior mechanisms Original Article Female Microglia Radiopharmaceuticals Corrigendum Biomarkers |
| Zdroj: | Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology. 42(8) |
| ISSN: | 1740-634X |
| Popis: | In the brain, microglia continuously scan the surrounding extracellular space in order to respond to damage or infection by becoming activated and participating in neuroinflammation. When activated, microglia increase the expression of translocator protein (TSPO) 18 kDa, thereby making the TSPO expression a marker for neuroinflammation. We used the radiotracer [11C]DAA1106 (a ligand for TSPO) and positron emission tomography (PET) to determine the effect of smoking on availability of this marker for neuroinflammation. Forty-five participants (30 smokers and 15 non-smokers) completed the study and had usable data. Participants underwent a dynamic PET scanning session with bolus injection of [11C]DAA1106 (with smokers in the satiated state) and blood draws during PET scanning to determine TSPO affinity genotype and plasma nicotine levels. Whole-brain standardized uptake values (SUVs) were determined, and analysis of variance was performed, with group (smoker vs non-smoker) and genotype as factors, thereby controlling for genotype. Smokers and non-smokers differed in whole-brain SUVs (P=0.006) owing to smokers having 16.8% lower values than non-smokers. The groups did not differ in injected radiotracer dose or body weight, which were used to calculate SUV. An inverse association was found between whole-brain SUV and reported cigarettes per day (P |
| Databáze: | OpenAIRE |
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