Demonstration with [14C]2-deoxyglucose of brain structures involved in the masticatory activity of the hedgehog (Erinaceus europaeus).
The different brain structures activated during mastication in the hedgehog were revealed using Sokoloff's 2-deoxy-D-[1-14C]glucose technique. Brain sections of animals having received an injection of 2-deoxy-D-[1-14C]glucose during mastication were compared with those of animals treated during calm waking. Only brain structures that presented a 20% increase in glucose consumption were considered. The greatest increases were observed in the bulbar parvocellular reticulum and the trigeminal spinal nucleus (+80%), followed by structures also involved in mastication such as the trigeminal motor nucleus (+73%) and the hypoglossal nucleus (+64%). Other activated areas, not directly involved in mastication, were for example, the area postrema (55%), the olfactory (44%) and visual cortex (41%). This study emphasizes the importance of the bulbar parvocellular reticulum during mastication.
Chapotat
B
B
Département de Médecine Expérimentale, INSERM U 52, CNRS URA 1195, Faculté de Médecine, Université Claude Bernard, Lyon, France.
Stuart
M
M
Buda
C
C
Woda
A
A
D000818:Animals; D001921:Brain / Q000502:physiology; D001923:Brain Chemistry / Q000502:physiology*; D002250:Carbon Radioisotopes; D003847:Deoxyglucose; D005260:Female; D005947:Glucose / Q000378:metabolism; D006364:Hedgehogs / Q000378:metabolism / Q000502:physiology*; D008297:Male; D008409:Mastication / Q000502:physiology*
D002250:Carbon Radioisotopes; D003847:Deoxyglucose; D005947:Glucose