Metformin prevents methylglyoxal-induced apoptosis of mouse Schwann cells

Kimiko Ota, Jiro Nakamura, Weiguo Li, Mika Kozakae, Atsuko Watarai, Nobuhisa Nakamura, Yutaka Yasuda, Eirtaro Nakashima, Keiko Naruse, Kazuhiko Watabe, Koichi Kato, Yutaka Oiso, Yoji Hamada

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Methylglyoxal (MG) is involved in the pathogenesis of diabetic complications via the formation of advanced glycation end products (AGEs) and reactive oxygen species (ROS). To clarify whether the antidiabetic drug metformin prevents Schwann cell damage induced by MG, we cultured mouse Schwann cells in the presence of MG and metformin. Cell apoptosis was evaluated using Hoechst 33342 nuclear staining, caspase-3 activity, and c-Jun-N-terminal kinase (JNK) phosphorylation. Intracellular ROS formation was determined by flow cytometry, and AMP-activated kinase (AMPK) phosphorylation was also examined. MG treatment resulted in blunted cell proliferation, an increase in the number of apoptotic cells, and the activation of caspase-3 and JNK along with enhanced intracellular ROS formation. All of these changes were significantly inhibited by metformin. No significant activation of AMPK by MG or metformin was observed. Taken together, metformin likely prevents MG-induced apoptotic signals in mouse Schwann cells by inhibiting the formation of AGEs and ROS.

Original languageEnglish (US)
Pages (from-to)270-275
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume357
Issue number1
DOIs
StatePublished - May 25 2007

Fingerprint

Pyruvaldehyde
Metformin
Schwann Cells
Cells
Apoptosis
Reactive Oxygen Species
Phosphorylation
AMP-Activated Protein Kinases
Caspase 3
Chemical activation
Advanced Glycosylation End Products
Flow cytometry
JNK Mitogen-Activated Protein Kinases
Cell proliferation
Diabetes Complications
Hypoglycemic Agents
Flow Cytometry
Phosphotransferases
Cell Count
Cell Proliferation

Keywords

  • Advanced glycation end products
  • Apoptosis
  • Metformin
  • Methylglyoxal
  • Oxidative stress
  • Reactive oxygen species

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Ota, K., Nakamura, J., Li, W., Kozakae, M., Watarai, A., Nakamura, N., ... Hamada, Y. (2007). Metformin prevents methylglyoxal-induced apoptosis of mouse Schwann cells. Biochemical and Biophysical Research Communications, 357(1), 270-275. https://doi.org/10.1016/j.bbrc.2007.03.140

Metformin prevents methylglyoxal-induced apoptosis of mouse Schwann cells. / Ota, Kimiko; Nakamura, Jiro; Li, Weiguo; Kozakae, Mika; Watarai, Atsuko; Nakamura, Nobuhisa; Yasuda, Yutaka; Nakashima, Eirtaro; Naruse, Keiko; Watabe, Kazuhiko; Kato, Koichi; Oiso, Yutaka; Hamada, Yoji.

In: Biochemical and Biophysical Research Communications, Vol. 357, No. 1, 25.05.2007, p. 270-275.

Research output: Contribution to journalArticle

Ota, K, Nakamura, J, Li, W, Kozakae, M, Watarai, A, Nakamura, N, Yasuda, Y, Nakashima, E, Naruse, K, Watabe, K, Kato, K, Oiso, Y & Hamada, Y 2007, 'Metformin prevents methylglyoxal-induced apoptosis of mouse Schwann cells', Biochemical and Biophysical Research Communications, vol. 357, no. 1, pp. 270-275. https://doi.org/10.1016/j.bbrc.2007.03.140
Ota, Kimiko ; Nakamura, Jiro ; Li, Weiguo ; Kozakae, Mika ; Watarai, Atsuko ; Nakamura, Nobuhisa ; Yasuda, Yutaka ; Nakashima, Eirtaro ; Naruse, Keiko ; Watabe, Kazuhiko ; Kato, Koichi ; Oiso, Yutaka ; Hamada, Yoji. / Metformin prevents methylglyoxal-induced apoptosis of mouse Schwann cells. In: Biochemical and Biophysical Research Communications. 2007 ; Vol. 357, No. 1. pp. 270-275.
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