この研究は、3-ニトロプロピオン酸(3-NP)によって誘発されたハンチントン病様の症状を呈したラットモデルを用いた実験で、経頭蓋磁気刺激法(TMS)が神経機能に対して有効な治療効果を示すか否かを調べた。その結果、TMS処置がNrf2転写因子の調節を引き起こすことが示された;ウエスタンブロット分析は、3-NP単独投与群において細胞質と核の両方でのNrf2減少を示したが、3-NP投与+TMS処理群においては、細胞質と核でのNrf2レベル上昇が示された;以上の知見は、TMSがNrf2の発現と転座を調節すること、このようなメカニズムはTMSの神経保護効果ならびに抗酸化および細胞保護能力を部分的に説明する可能性を示唆する、と報告している。
The detailed summary of this article is not available in your language or incomplete. Would you like to see a complete translation of the summary? Then please contact us →
To study whether an extremely low frequency magnetic field is capable to induce the transcription factor NF-E2-related factor 2 (Nrf2; involved in regulation of the antioxidant system) nuclear translocation in an animal model of Huntington's disease.
The animals were divided into three groups (4 animals per group): i) control group, ii) 3-nitropropionic acid (3-NP)-treated rats (20 mg/kg body weight) for four consecutive days and iii) 3-NP-treated rats + magnetic field exposure.
3-NP is a neurotoxin and an inhibitor of the succinate dehydrogenase enzyme. This toxin causes changes similar to those occurring in Huntington's disease.
ばく露 | パラメータ |
---|---|
ばく露1:
60 Hz
ばく露時間:
4 h/day for 8 days (see add. information)
|
|
Animals divided into three groups: i) control ii) treated with 3-NP for 4 days iii) treated with 3-NP for 4 days and exposed to EMF for 8 days
周波数 | 60 Hz |
---|---|
タイプ |
|
波形 |
|
ばく露時間 | 4 h/day for 8 days (see add. information) |
ばく露の発生源/構造 | |
---|---|
ばく露装置の詳細 | pair of Helmholtz coils with a diameter of 7 cm; each coil consisting of 1000 turns of enamelled copper wire and placed in a 10.5 cm x 10.5 cm x 3.5 cm plastic box; animal placed in a cylindrical plastic cage designed to keep it immobilized while receiving magnetic stimulation to its head; cage positioned between the coils |
Sham exposure | A sham exposure was conducted. |
Additional information | exposure time: 2 h in the morning and 2 h in the afternoon; exposure starting 4 days before the first injection with 3-NP |
測定量 | 値 | 種別 | Method | Mass | 備考 |
---|---|---|---|---|---|
磁束密度 | 0.7 mT | - | - | - | - |
The data showed that 3-NP caused a reduction in Nrf2 expression in both cytoplasm and nucleus, while the magnetic stimulation applied to 3-NP-treated rats triggered an increase in cytoplasm and nucleus Nrf2 levels.
The authors conclude that transcranial magnetic stimulation modulates Nrf2 protein expression and translocation and that these mechanisms may partly explain the neuroprotective effect of transcranial magnetic stimulation, as well as its antioxidant and cell protection capacity.
このウェブサイトはクッキー(Cookies)を使って、最善のブラウジングエクスペリエンスを提供しています。あなたがこのウェブサイトを継続して使用することで、私たちがクッキーを使用することを許可することになります。