論文 - 詳細
| RRC ID | 64013 |
|---|---|
| 著者 | Takado Y, Takuwa H, Sampei K, Urushihata T, Takahashi M, Shimojo M, Uchida S, Nitta N, Shibata S, Nagashima K, Ochi Y, Ono M, Maeda J, Tomita Y, Sahara N, Near J, Aoki I, Shibata K, Higuchi M. |
| タイトル | MRS-measured glutamate versus GABA reflects excitatory versus inhibitory neural activities in awake mice. |
| ジャーナル | J Cereb Blood Flow Metab |
| Abstract |
To assess if magnetic resonance spectroscopy (MRS)-measured Glutamate (Glu) and GABA reflect excitatory and inhibitory neural activities, respectively, we conducted MRS measurements along with two-photon mesoscopic imaging of calcium signals in excitatory and inhibitory neurons of living, unanesthetized mice. For monitoring stimulus-driven activations of a brain region, MRS signals and mesoscopic neural activities were measured during two consecutive sessions of 15-min prolonged sensory stimulations. In the first session, putative excitatory neuronal activities were increased, while inhibitory neuronal activities remained at the baseline level. In the second half, while excitatory neuronal activities remained elevated, inhibitory neuronal activities were significantly enhanced. We assessed regional neurochemical statuses by measuring MRS signals, which were overall in accordance with the neural activities, and neuronal activities and neurochemical statuses in a mouse model of Dravet syndrome under resting condition. Mesoscopic assessments showed that activities of inhibitory neurons in the cortex were diminished relative to wild-type mice in contrast to spared activities of excitatory neurons. Consistent with these observations, the Dravet model exhibited lower concentrations of GABA than wild-type controls. Collectively, the current investigations demonstrate that MRS-measured Glu and GABA can reflect spontaneous and stimulated activities of neurons producing and releasing these neurotransmitters in an awake condition. |
| 巻・号 | 42(1) |
| ページ | 197-212 |
| 公開日 | 2022-1-1 |
| DOI | 10.1177/0271678X211045449 |
| PMID | 34515548 |
| PMC | PMC8721779 |
| MeSH | Animals Disease Models, Animal Epilepsies, Myoclonic / metabolism* Female GABAergic Neurons / metabolism* Glutamic Acid / metabolism* Magnetic Resonance Spectroscopy Male Mice Wakefulness* gamma-Aminobutyric Acid / metabolism* |
| IF | 5.681 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 6 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 実験動物マウス | RBRC06422 |