WEKO3
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In Vivo Visualization of Tau Accumulation, Microglial Activation, and Brain Atrophy in a Mouse Model of Tauopathy rTg4510
https://repo.qst.go.jp/records/48782
https://repo.qst.go.jp/records/48782e288be14-fecc-464a-bd43-58ef2d8285e6
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-04-23 | |||||
タイトル | ||||||
タイトル | In Vivo Visualization of Tau Accumulation, Microglial Activation, and Brain Atrophy in a Mouse Model of Tauopathy rTg4510 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Ishikawa, Ai
× Ishikawa, Ai× Tokunaga, Masaki× Maeda, Jun× Minamihisamatsu, Takeharu× Shimojo, Masafumi× Takuwa, Hiroyuki× Ono, Maiko× Ni, Ruiqing× Hirano, Shigeki× Kuwabara, Satoshi× Ji, Bin× Zhang, Ming-Rong× Aoki, Ichio× Suhara, Tetsuya× Higuchi, Makoto× Sahara, Naruhiko× 石川 愛× 徳永 正希× 前田 純× 南久松 丈晴× 下條 雅文× 田桑 弘之× 小野 麻衣子× 倪 遑伯× 平野 成樹× 季 斌× 張 明栄× 青木 伊知男× 須原 哲也× 樋口 真人× 佐原 成彦 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Background: Tau imaging using PET is a promising tool for the diagnosis and evaluation of tau-related neurodegenerative disorders, but the relationship among PET-detectable tau, neuroinflammation and neurodegeneration is not yet fully understood. We aimed to elucidate sequential changes in tau accumulation, neuroinflammation and brain atrophy by PET and MRI in a tauopathy mouse model. Methods: rTg4510 transgenic (tg) mice expressing P301L mutated tau and non-tg mice were examined with brain MRI and PET imaging (analyzed numbers: tg = 17, non-tg = 13; age 2.5~14 months). As PET probes, [11C]PBB3 (Pyridinyl-Butadienyl-Benzothiazole 3) and [11C]AC-5216 were used to visualize tau pathology and 18-kDa translocator protein (TSPO) neuroinflammation. Tau pathology and microglia activation were subsequently analyzed by histochemistry. Results: PET studies revealed age-dependent increases in [11C]PBB3 and [11C]AC-5216 signals, which were correlated with age-dependent volume reduction in the forebrain on MRI. However, the increase in [11C]PBB3 signals reached a plateau at age 7 months, and therefore its significant correlation with [11C]AC-5216 disappeared after age 7 months. In contrast, [11C]AC-5216 showed a strong correlation with both age and volume reduction until age 14 months. Histochemical analyses confirmed the relevance of pathological tau accumulation and elevated TSPO immunoreactivity in putative microglia. Conclusion: Our results showed that tau accumulation is associated with neuroinflammation and brain atrophy in a tauopathy mouse model. The time-course of the [11C]PBB3- and TSPO-PET finding suggests that tau deposition triggers progressive neuroinflammation, and the sequential changes can be evaluated in vivo in mouse brains. |
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書誌情報 |
Journal of Alzheimer's Disease 巻 61, 号 3, p. 1037-1052, 発行日 2018-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1387-2877 | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 29332041 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.3233/JAD-170509 |