Effects of fasting and feeding on the brain mRNA expressions of orexin, tyrosine hydroxylase (TH), PYY and CCK in the Mexican blind cavefish (Astyanax fasciatus mexicanus)

► OX, TH, PYY and CCK were cloned in blind cavefish. ► Fasting increases OX and TH brain mRNA expression but has no effect on PYY and CCK expression. ► Periprandial changes in expression are seen for OX, TH and PYY but not for CCK. ► Brain OX, TH and PYY might be involved in the central regulation of feeding of blind cavefish.