Antinociceptive effects of fisetin against diabetic neuropathic pain in mice: Engagement of antioxidant mechanisms and spinal GABAA receptors

Xin Zhao, Xin Lin Li, Xin Liu, Chuang Wang, Dong Sheng Zhou, Qing Ma, Wen Hua Zhou, Zhen Yu Hu

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Peripheral painful neuropathy is one of the most common complications in diabetes and necessitates improved treatment. Fisetin, a naturally occurring flavonoid, has been reported to exert antidepressant-like effect in previous studies. As antidepressant drugs are employed clinically to treat neuropathic pain, this work aimed to investigate whether fisetin posses beneficial effect on diabetic neuropathic pain and explore the mechanism(s). We subjected mice to diabetes by a single intraperitoneal (i.p.) injection of streptozotocin (200 mg/kg), and von Frey test or Hargreaves test was used to assess mechanical allodynia or thermal hyperalgesia, respectively. Chronic treatment of diabetic mice with fisetin not only ameliorated the established symptoms of thermal hyperalgesia and mechanical allodynia, but also arrested the development of neuropathic pain when given at low doses. Although chronic fisetin administration did not impact on the symptom of hyperglycemia in diabetic mice, it reduced exacerbated oxidative stress in tissues of spinal cord, dorsal root ganglion (DRG) and sciatic verve. Furthermore, the analgesic actions of fisetin were abolished by repetitive co-treatment with the reactive oxygen species (ROS) donor tert-butyl hydroperoxide (t-BOOH), but potentiated by the ROS scavenger phenyl-N-tert-butylnitrone (PBN). Finally, acute blockade of spinal GABAA receptors by bicuculline totally counteracted such fisetin analgesia. These findings indicate that chronic fisetin treatment can delay or correct neuropathic hyperalgesia and allodynia in mice with type 1 diabetes. Mechanistically, the present fisetin analgesia may be associated with its antioxidant activity, and spinal GABAA receptors are likely rendered as downstream targets.

Original languageEnglish (US)
Pages (from-to)286-297
Number of pages12
JournalPharmacological Research
Volume102
DOIs
StatePublished - Dec 1 2015

Fingerprint

Hyperalgesia
Neuralgia
GABA-A Receptors
Antioxidants
Analgesia
Antidepressive Agents
Reactive Oxygen Species
tert-Butylhydroperoxide
Bicuculline
fisetin
Spinal Ganglia
Peripheral Nervous System Diseases
Diabetes Complications
Therapeutics
Streptozocin
Intraperitoneal Injections
Type 1 Diabetes Mellitus
Flavonoids
Hyperglycemia
Analgesics

Keywords

  • Antinociceptive effect
  • Antioxidant
  • Diabetes
  • Fisetin
  • GABA

ASJC Scopus subject areas

  • Pharmacology

Cite this

Antinociceptive effects of fisetin against diabetic neuropathic pain in mice : Engagement of antioxidant mechanisms and spinal GABAA receptors. / Zhao, Xin; Li, Xin Lin; Liu, Xin; Wang, Chuang; Zhou, Dong Sheng; Ma, Qing; Zhou, Wen Hua; Hu, Zhen Yu.

In: Pharmacological Research, Vol. 102, 01.12.2015, p. 286-297.

Research output: Contribution to journalArticle

Zhao, Xin ; Li, Xin Lin ; Liu, Xin ; Wang, Chuang ; Zhou, Dong Sheng ; Ma, Qing ; Zhou, Wen Hua ; Hu, Zhen Yu. / Antinociceptive effects of fisetin against diabetic neuropathic pain in mice : Engagement of antioxidant mechanisms and spinal GABAA receptors. In: Pharmacological Research. 2015 ; Vol. 102. pp. 286-297.
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