Cytoprotective effects of hesperetin and hesperidin against amyloid β-induced impairment of glucose transport through downregulation of neuronal autophagy

Shang Ming Huang, Shin Yi Tsai, Jer An Lin, Chi Hao Wu, Gow Chin Yen

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Scope: This study investigated whether flavonoids, such as hesperetin and hesperidin, inhibited amyloid β (Aβ)-impaired glucose utilization through regulating cellular autophagy in insulin-stimulated neuronal cells. Methods and results: In this study, we used a toxic Aβ1-42 peptide to impair insulin-stimulated glucose utilization in Neuro-2A cells, and this study also hypothesized that Aβ-induced autophagy might be emerging as a key process regulating neuronal glucose uptake. Additionally, hesperetin and hesperidin were used to test the neuroprotective effect against Aβ-induced impairment of glucose utilization. Our data found that Aβ-stimulated autophagy activation promoted the phenomenon of impairment of neuronal energy metabolism, including glucose uptake, glucose transporters (GLUTs), and insulin signaling cascades. In this study, confocal images of autophagy punctate further confirmed that downregulation of Aβ-stimulated autophagy could increase insulin-stimulated neuronal glucose uptake. Moreover, treatment with hesperetin and hesperidin improved Aβ-impaired glucose utilization by inhibiting Aβ-induced autophagy in neuronal cells. Conclusion: These findings suggest that downregulation of autophagy may be one of the approaches to control the impairment of energy metabolism leading to neuronal injury in the early development of Alzheimer's disease, and hesperetin or hesperidin may be a potential agent in the preventing of Alzheimer's disease progression.

Original languageEnglish
Pages (from-to)601-609
Number of pages9
JournalMolecular Nutrition and Food Research
Volume56
Issue number4
DOIs
Publication statusPublished - Apr 2012
Externally publishedYes

Fingerprint

Hesperidin
hesperetin
hesperidin
autophagy
Autophagy
amyloid
Amyloid
Down-Regulation
Glucose
glucose
insulin
Insulin
Alzheimer disease
uptake mechanisms
energy metabolism
Energy Metabolism
Alzheimer Disease
neurons
neuroprotective effect
glucose transporters

Keywords

  • Amyloid β
  • Autophagy
  • Glucose uptake
  • Hesperetin
  • Hesperidin

ASJC Scopus subject areas

  • Food Science
  • Biotechnology

Cite this

Cytoprotective effects of hesperetin and hesperidin against amyloid β-induced impairment of glucose transport through downregulation of neuronal autophagy. / Huang, Shang Ming; Tsai, Shin Yi; Lin, Jer An; Wu, Chi Hao; Yen, Gow Chin.

In: Molecular Nutrition and Food Research, Vol. 56, No. 4, 04.2012, p. 601-609.

Research output: Contribution to journalArticle

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