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2008 | 68 | 3 |
Tytuł artykułu

Noradrenaline-induced feeding responses in the rat do not depend on food characteristics

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The noradrenergic system of the hypothalamic paraventricular nuclei (PVN) has been associated with feeding, but whether it controls feeding in a way that is relevant to energy balance is still unclear. Rats were maintained on a high energy, carbohydrate-rich diet (HC), or a low energy, carbohydrate-free, protein-rich diet (LP), until their daily energy intakes equalized. When injected with noradrenaline (NA) into the PVN, they ingested the same amounts of both diets so that the animals on the LP diet consumed only half the total energy of those on the HC diet. Continuous delivery of NA into the PVN via a microdialysis probe induced chewing on non-nutritive pieces of corks. The same chewing pattern could again be elicited by the subsequent NA deliveries. It is concluded that the nutritional value of a diet is irrelevant to the NA feeding response. The failure of NA administration to increase rat feeding in terms of energy intake, combined with its ability to stimulate chewing, suggests that the primary role of the NA system of the PVN may not be controlling the carbohydrate and energy intake, but rather gating behavioral responses that under appropriate circumstances may lead to ingestion.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
68
Numer
3
Opis fizyczny
p.354-361,fig.,ref.
Twórcy
  • Department of Animal Physiology, Institute of Biology, University of Gdansk, Gdansk, Poland
  • Department of Animal Behavior, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland
autor
  • Laboratory of Neurophysiology, Lodz University, Lodz, Poland
Bibliografia
Uwagi
PL
Rekord w opracowaniu
Typ dokumentu
Bibliografia
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Identyfikator YADDA
bwmeta1.element.agro-0672bcd7-e16f-4e32-8e5b-05111822b229
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