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The present study was designed to further investigate the nature of feeding induced by opioid stimulation of the nucleus accumbens through an examination of the effects of intra-accumbens (ACB) opioids on macronutrient selection. In 3-hr tests of free-feeding (satiated) rats, intra-ACB administration of the mu receptor agonist D-Ala2,N,Me-Phe4,(More)
There is a long-standing interest in the role of endogenous opioid peptides in feeding behavior and, in particular, in the modulation of food reward and palatability. Since drugs such as heroin, morphine, alcohol, and cannabinoids, interact with this system, there may be important common neural substrates between food and drug reward with regard to the(More)
Our previous studies have shown that stimulation of mu-opioid receptors within the nucleus accumbens preferentially enhances intake of palatable food containing sucrose and fat; thus, opioids in this brain area may mediate the rewarding characteristics of food by modulating taste and macronutrient preference. The present study was designed to further(More)
Brain opioid peptide systems are known to play an important role in motivation, emotion, attachment behaviour, the response to stress and pain, and the control of food intake. Opioid peptides within the ventral striatum are thought to play a key role in the latter function, regulating the affective response to highly palatable, energy-dense foods such as(More)
Previous studies have indicated that central opioid peptides and opiate receptors play an important role in the modulation of ingestive behaviors. The nucleus accumbens (Acb), a forebrain region involved in reinforcement, contains high levels of opiate receptors. The present investigation was undertaken to determine the relative involvement of opiate(More)
This study investigated the effects of different acute high ambient temperatures on dysfunction of hepatic mitochondrial respiration, the antioxidative enzyme system, and oxidative injury in broiler chickens. One hundred twenty-eight 6-wk-old broiler chickens were assigned randomly to 4 groups and subsequently exposed to 25 (control), 32, 35, and 38 degrees(More)
Mitochondrial DNA sequences can be used to estimate phylogenetic relationships among animal taxa and for molecular phylogenetic evolution analysis. With the development of sequencing technology, more and more mitochondrial sequences have been made available in public databases, including whole mitochondrial DNA sequences. These data have been used for(More)
Ethanol is among the most widely abused drugs in the world. Chronic ethanol consumption leads to ethanol tolerance and addiction, and impairs learning and memory. Na+/Cl- dependent GABA transporters play an important role in controlling the concentration of GABA in the synaptic cleft, and thus they control the intensity and duration of synaptic transmission(More)
OBJECTIVE The aim of this paper was to investigate endothelial dysfunction, platelet activation, and inflammation in elderly hypertensive patients and those complicated with cerebral infarction. METHODS Twenty-eight elderly hypertensive patients complicated with cerebral infarction(within 72 hours after onset of neurological symptoms), thirty-one Stage(More)
AIMS To evaluate the biodegradability of 2,4-DNT using an anaerobic filter (AF) combined with a biological aerated filter (BAF), and elucidate the degradation mechanism of 2,4-DNT and analyze the bacterial community of the reactors over a long period of operation. METHODS AND RESULTS The pilot test experienced wide fluctuations influent concentrations and(More)