Effect of Orexin A antagonist (SB-334867) infusion into the nucleus accumbens on consummatory behavior and alcohol preference in Wistar rats
| Autor: | Saraswati Yadav, Yalla Durga Rao, Rashmi Ks, Santosh Mayannavar, Ganaraja B |
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| Rok vydání: | 2016 |
| Předmět: |
Male
0301 basic medicine medicine.medical_specialty Alcohol Drinking media_common.quotation_subject Alcohol Nucleus accumbens Nucleus Accumbens 03 medical and health sciences Orexin-A chemistry.chemical_compound 0302 clinical medicine SB-334867 Preference test Internal medicine mental disorders medicine Animals Humans Urea Pharmacology (medical) Naphthyridines Rats Wistar Orexin-A antagonist (SB-334867) media_common Pharmacology Benzoxazoles Orexins food Addiction digestive oral and skin physiology Antagonist Cannula Rats 030104 developmental biology Endocrinology chemistry water and alcohol 030217 neurology & neurosurgery Research Article |
| Zdroj: | Indian Journal of Pharmacology |
| ISSN: | 0253-7613 |
| DOI: | 10.4103/0253-7613.174528 |
| Popis: | Objective: Nucleus accumbens (NAcc) has a role in addiction and ingestive behavior. In order to assess orexinergic system involved in this, we infused Orexin A antagonist and assessed the effect on food intake fluid intake and alcohol preference in Wistar rats. Materials and Methods: Inbred Wistar rats (n = 54) were divided into control and experimental groups (low dose and high dose). Using stereotaxic method, guide cannula was set in place bilaterally to reach NAcc. Low dose (3 ng) and high dose (6 ng) of Orexin A antagonist (SB-334867) was infused, and the food consumption, water intake and alcohol intake, and two bottle free choice preference test for alcohol were carried out in the experimental group. The control group received saline infusion and rest of the methods followed were same. The measurements were carried out immediately after the infusion, at 1 h, 2 h, 4 h, and for the whole day and represented in the figure and tables. Results: A decrease in water intake observed immediately after the infusion in 1st h (P < 0.05) and 2nd h (P < 0.01), which was more in high dose group compared to low dose and controls. Alcohol intake was also following the same pattern. In two bottle free choice, rats did not show any specific preference to alcohol. Conclusion: There was dose dependent reduction in intake of food and fluids in treated rats. This suggested a possible role for orexinergic system in ingestive behavior. However, Orexin A may not have a role in modulation of alcohol addiction by the rewarding center NAcc. |
| Databáze: | OpenAIRE |
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