FIGURE 5.
Central administration of orexin A stimulates the expression of proinflammatory cytokines (PICs) in the PVN of SD rats. Real-time PCR analysis of paraventricular nucleus (PVN) PICs mRNA expression levels at 3 hours following acute intracerebroventricular (ICV) infusion of vehicle control (0.9% saline) or orexin A (0.2 nmol) using male adult SD rats. ICV injection of orexin A increases PVN IL-1-β, IL-6, TNF-α and Fra1 mRNA expression in SD rats. The mRNA level in the control sample was assigned to be arbitrary unit (a.u). *P < .05 vs vehicle control; n = 6 each group