Neuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study
Shutaro Nakaaki,1 Junko Sato,2 Katsuyoshi Torii,2 Mizuki Oka,1 Atsushi Negi,2 Takashi Nakamae,3 Jin Narumoto,3 Jun Miyata,4 Toshi A Furukawa,5 Masaru Mimura11Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, 2Department of Psychiatry and Cognitive-Behavioral Medi...
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Dove Medical Press
2012
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oai:doaj.org-article:c1c0beeba45e483e828b047c3ff2f5222021-12-02T07:41:52ZNeuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study1176-63281178-2021https://doaj.org/article/c1c0beeba45e483e828b047c3ff2f5222012-12-01T00:00:00Zhttp://www.dovepress.com/neuroanatomical-abnormalities-before-onset-of-delusions-in-patients-wi-a11811https://doaj.org/toc/1176-6328https://doaj.org/toc/1178-2021Shutaro Nakaaki,1 Junko Sato,2 Katsuyoshi Torii,2 Mizuki Oka,1 Atsushi Negi,2 Takashi Nakamae,3 Jin Narumoto,3 Jun Miyata,4 Toshi A Furukawa,5 Masaru Mimura11Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, 2Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, 3Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 4Department of Neuropsychiatry, Graduate School of Medicine, Kyoto University, Kyoto, 5Department of Health Promotion and Human Behavior (Cognitive-Behavioral Medicine), Kyoto University Graduate School of Medicine and Public Health, Kyoto, JapanBackground: Structural brain abnormalities associated with delusions in Alzheimer’s disease are poorly understood. In addition, whether the neural substrate underlying the delusions develops before the onset of the delusions is unclear. In this study, we used a voxel-based morphometry approach to examine the existence of regional structural abnormalities at baseline in patients with Alzheimer’s disease who did and who did not develop delusions.Methods: Using the Neuropsychiatric Inventory, we identified patients with Alzheimer’s disease who exhibited delusions during a 2-year period. All the patients had undergone a magnetic resonance imaging examination at the start of the study period (baseline). We conducted a voxel-based morphometry analysis using statistical parametric mapping (SPM5) software and compared the results of patients with Alzheimer’s disease who did and did not develop delusions.Results: Compared with the patients who did not develop delusions (n = 35), the patients who did develop delusions (n = 18) had significantly smaller gray matter volumes on both sides of the parahippocampal gyrus, the right posterior cingulate gyrus, the right orbitofrontal cortex, both sides of the inferior frontal cortex, the right anterior cingulate, and the left insula.Conclusion: Structural brain abnormalities involving both the frontal and medial temporal lobes may be crucial to the expression of delusions in patients with Alzheimer’s disease.Keywords: Alzheimer’s disease, delusions, structural brain abnormalities, voxel-based morphometryNakaaki SSato JTorii KOka MNegi ANakamae TNarumoto JMiyata JFurukawa TAMimura MDove Medical PressarticleNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571Neurology. Diseases of the nervous systemRC346-429ENNeuropsychiatric Disease and Treatment, Vol 2013, Iss default, Pp 1-8 (2012) |
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Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429 |
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Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429 Nakaaki S Sato J Torii K Oka M Negi A Nakamae T Narumoto J Miyata J Furukawa TA Mimura M Neuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study |
| description |
Shutaro Nakaaki,1 Junko Sato,2 Katsuyoshi Torii,2 Mizuki Oka,1 Atsushi Negi,2 Takashi Nakamae,3 Jin Narumoto,3 Jun Miyata,4 Toshi A Furukawa,5 Masaru Mimura11Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, 2Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, 3Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 4Department of Neuropsychiatry, Graduate School of Medicine, Kyoto University, Kyoto, 5Department of Health Promotion and Human Behavior (Cognitive-Behavioral Medicine), Kyoto University Graduate School of Medicine and Public Health, Kyoto, JapanBackground: Structural brain abnormalities associated with delusions in Alzheimer’s disease are poorly understood. In addition, whether the neural substrate underlying the delusions develops before the onset of the delusions is unclear. In this study, we used a voxel-based morphometry approach to examine the existence of regional structural abnormalities at baseline in patients with Alzheimer’s disease who did and who did not develop delusions.Methods: Using the Neuropsychiatric Inventory, we identified patients with Alzheimer’s disease who exhibited delusions during a 2-year period. All the patients had undergone a magnetic resonance imaging examination at the start of the study period (baseline). We conducted a voxel-based morphometry analysis using statistical parametric mapping (SPM5) software and compared the results of patients with Alzheimer’s disease who did and did not develop delusions.Results: Compared with the patients who did not develop delusions (n = 35), the patients who did develop delusions (n = 18) had significantly smaller gray matter volumes on both sides of the parahippocampal gyrus, the right posterior cingulate gyrus, the right orbitofrontal cortex, both sides of the inferior frontal cortex, the right anterior cingulate, and the left insula.Conclusion: Structural brain abnormalities involving both the frontal and medial temporal lobes may be crucial to the expression of delusions in patients with Alzheimer’s disease.Keywords: Alzheimer’s disease, delusions, structural brain abnormalities, voxel-based morphometry |
| format |
article |
| author |
Nakaaki S Sato J Torii K Oka M Negi A Nakamae T Narumoto J Miyata J Furukawa TA Mimura M |
| author_facet |
Nakaaki S Sato J Torii K Oka M Negi A Nakamae T Narumoto J Miyata J Furukawa TA Mimura M |
| author_sort |
Nakaaki S |
| title |
Neuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study |
| title_short |
Neuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study |
| title_full |
Neuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study |
| title_fullStr |
Neuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study |
| title_full_unstemmed |
Neuroanatomical abnormalities before onset of delusions in patients with Alzheimer’s disease: a voxel-based morphometry study |
| title_sort |
neuroanatomical abnormalities before onset of delusions in patients with alzheimer’s disease: a voxel-based morphometry study |
| publisher |
Dove Medical Press |
| publishDate |
2012 |
| url |
https://doaj.org/article/c1c0beeba45e483e828b047c3ff2f522 |
| work_keys_str_mv |
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