パーキンソン病および運動障害状態における直径神経集合の動態
Jones G Parker1,2, Jesse D Marshall1,3,4, Biafra Ahanonu1,3
1CNC Program, Stanford University, Stanford, CA, USA.
Nature
|May 4, 2018
まとめ
パーキンソン病は ドーパミンニューロンの活動を変えることで 運動を阻害します 新しい研究は,発射神経細胞 (SPNs) の活動率とパターンをターゲットにすることが,将来の基礎結晶障害の治療の鍵であることを示しています.
科学分野:
- 神経科学
- 基礎ガンジュア研究
- 運動障害
背景:
- パーキンソン病 (PD) のドーパミンの減少は,運動に影響する基礎性腺機能を乱すと考えられています.
- 直接 (dSPNs) と間接 (iSPNs) 経路の棘状投影ニューロン (SPNs) は運動制御に関与している.
- SPNの活動における不均衡はPDの症状とL-DOPA誘発の運動障害の両方の基礎となる可能性があります.
研究 の 目的:
- ドーパミンがベースリンパ節におけるdSPNとiSPNの活性を調節する役割を調査する.
- ドーパミンの減少とL-DOPA治療がSPN活動パターンにどのように影響するか理解する.
- ベースリンパ節の障害に対するSPN活動を標的とした治療戦略を探求する.
主な方法:
- 先進的なイメージング技術を用いて,行動するマウスの何千ものSPNのモニタリング.
- ドーパミンの減少とL-DOPAの投与を含む実験的な操作
- 介入前と後のSPN活動率と空間時間的なクラスタリングの分析
主要な成果:
- ドーパミンの減少はSPNの活動率のバランスを崩し,iSPNのクラスターを乱し,運動障害と相関しています.
- L-DOPAとD2ドーパミン受容体のアゴニズムが,D1アゴニズムよりもこれらの異常を逆転させるのに効果的であった.
- L-DOPAが誘発した運動障害は,iSPNの低活性化とdSPNの過剰活性化で,対極的なパターンを示した.
結論:
- SPNの活動率と時空のプロファイルは,線状の機能にとって非常に重要です.
- ベースリンパ節障害の効果的な治療には,SPNの活動の両面を扱う必要があります.
- 発見は運動制御と機能不全の 基礎にある神経回路の洞察を提供します
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