Rhodioloside ameliorates depressive behavior via up-regulation of monoaminergic system activity and anti-inflammatory effect in olfactory bulbectomized rats

Int Immunopharmacol. 2016 Jul;36:300-304. doi: 10.1016/j.intimp.2016.05.008. Epub 2016 May 20.

Abstract

Rhodioloside, a major constituent from roots of Rhodiola rosea, has been previously confirmed to alleviate the hyperactivity in olfactory bulbectomized (OBX) rats exposed to the open field and to decrease the immobility time in the forced swimming test (FST) and tail suspension test (TST). However, its antidepressant effects and mechanisms remain unclear. This study aimed to evaluate the antidepressant effect and the potential mechanisms of rhodioloside in OBX rats. ELISA kits, HPLC-MS and western blot analysis were applied to explore the underlying antidepressant mechanisms of rhodioloside. Rhodioloside (20, 40mg/kg) significantly reversed OBX-induced reduction in sucrose consumption. It was also observed that administration of rhodioloside (20, 40mg/kg) decreased pro-inflammatory cytokines interleukin-1 beta (IL-1β) and interleukin-6 (IL-6) levels and inhibits nuclear factor-kappa B (NF-κB) activation, as well as normalized the monoaminergic system changes in prefrontal cortex (PFC) of OBX rats. These results confirmed the antidepressant-like effect of rhodioloside, which might be primarily based on its up-regulation of the monoaminergic system activity and anti-inflammatory effect.

Keywords: Depression; Monoaminergic system; NF-κB; Olfactory bulbectomy; Pro-inflammatory cytokine; Rhodioloside.

MeSH terms

  • Animals
  • Anti-Inflammatory Agents / therapeutic use*
  • Antidepressive Agents / therapeutic use*
  • Biogenic Monoamines / metabolism*
  • Depression / drug therapy*
  • Disease Models, Animal
  • Glucosides / therapeutic use*
  • Interleukin-1beta / metabolism
  • Interleukin-6 / metabolism
  • Male
  • NF-kappa B / metabolism
  • Olfactory Bulb / surgery
  • Phenols / therapeutic use*
  • Prefrontal Cortex / drug effects*
  • Prefrontal Cortex / physiology
  • Rats
  • Rats, Sprague-Dawley
  • Rhodiola / immunology*
  • Signal Transduction

Substances

  • Anti-Inflammatory Agents
  • Antidepressive Agents
  • Biogenic Monoamines
  • Glucosides
  • Interleukin-1beta
  • Interleukin-6
  • NF-kappa B
  • Phenols
  • rhodioloside