Potentiation of Akt and suppression of caspase-9 activations by electroacupuncture after transient middle cerebral artery occlusion in rats

Shao Jun Wang, Nobuhiko Omori, Feng Li, Guang Jin, Wen Ri Zhang, Yoshiyuki Hamakawa, Keiko Sato, Isao Nagano, Mikio Shoji, Koji Abe

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Electroacupuncture (EA) is an effective curative method for diseases including cerebral ischemia. In the current study, we investigated the effects of EA treatment on the activations of survival Akt and proapoptotic caspase-9 after 90 min of transient middle cerebral artery occlusion (tMCAO) in rat. Immunoreactivity of phospho-Akt (p-Akt) increased in the ipsilateral hemisphere after tMCAO with a peak at 8 h, and EA enhanced the Akt expression both in the number and the staining strength mainly in the ischemic penumbra (IP) at 8 and 24 h. Cleaved caspase-9 was strongly induced at 8 h in IP, which was suppressed with EA. The number of terminal deoxynucleotidyl transferase-mediated uridine 5′ triphosphate-biotin nick end labelling positive cells reduced at 24 h in the cerebral cortex. These results suggest that EA potentiated the Akt and suppressed the caspase-9 activations, and may have a potential to reduce the number of neuronal cells undergoing apoptotic cell death.

Original languageEnglish
Pages (from-to)115-118
Number of pages4
JournalNeuroscience Letters
Volume331
Issue number2
DOIs
Publication statusPublished - Oct 11 2002

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Electroacupuncture
Caspase 9
Middle Cerebral Artery Infarction
Uridine Triphosphate
DNA Nucleotidylexotransferase
Biotin
Brain Ischemia
Cerebral Cortex
Cell Death
Cell Count
Staining and Labeling

Keywords

  • Akt
  • Caspase-9
  • Electroacupuncture
  • Rat
  • Transient middle cerebral artery occlusion

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Potentiation of Akt and suppression of caspase-9 activations by electroacupuncture after transient middle cerebral artery occlusion in rats. / Wang, Shao Jun; Omori, Nobuhiko; Li, Feng; Jin, Guang; Zhang, Wen Ri; Hamakawa, Yoshiyuki; Sato, Keiko; Nagano, Isao; Shoji, Mikio; Abe, Koji.

In: Neuroscience Letters, Vol. 331, No. 2, 11.10.2002, p. 115-118.

Research output: Contribution to journalArticle

Wang, Shao Jun ; Omori, Nobuhiko ; Li, Feng ; Jin, Guang ; Zhang, Wen Ri ; Hamakawa, Yoshiyuki ; Sato, Keiko ; Nagano, Isao ; Shoji, Mikio ; Abe, Koji. / Potentiation of Akt and suppression of caspase-9 activations by electroacupuncture after transient middle cerebral artery occlusion in rats. In: Neuroscience Letters. 2002 ; Vol. 331, No. 2. pp. 115-118.
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AU - Hamakawa, Yoshiyuki

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AB - Electroacupuncture (EA) is an effective curative method for diseases including cerebral ischemia. In the current study, we investigated the effects of EA treatment on the activations of survival Akt and proapoptotic caspase-9 after 90 min of transient middle cerebral artery occlusion (tMCAO) in rat. Immunoreactivity of phospho-Akt (p-Akt) increased in the ipsilateral hemisphere after tMCAO with a peak at 8 h, and EA enhanced the Akt expression both in the number and the staining strength mainly in the ischemic penumbra (IP) at 8 and 24 h. Cleaved caspase-9 was strongly induced at 8 h in IP, which was suppressed with EA. The number of terminal deoxynucleotidyl transferase-mediated uridine 5′ triphosphate-biotin nick end labelling positive cells reduced at 24 h in the cerebral cortex. These results suggest that EA potentiated the Akt and suppressed the caspase-9 activations, and may have a potential to reduce the number of neuronal cells undergoing apoptotic cell death.

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