PMID- 24681217 OWN - NLM STAT- MEDLINE DCOM- 20150207 LR - 20140609 IS - 1095-6867 (Electronic) IS - 0018-506X (Linking) VI - 66 IP - 1 DP - 2014 Jun TI - Food hoarding, but not food intake, is attenuated by acute diazepam treatment in female Mongolian gerbils (Meriones unguiculatus). PG - 186-95 LID - S0018-506X(14)00051-8 [pii] LID - 10.1016/j.yhbeh.2014.03.010 [doi] AB - This article is part of a Special Issue "Energy Balance". Effects of gamma-aminobutyric acid (GABA) on food hoarding are unknown in rodents, and the effects of energy balance and GABA have not been evaluated in females. To evaluate the role of food deprivation and GABA on food hoarding, female Mongolian gerbils were given i.p. injection of diazepam (1mg/kg and 3mg/kg, respectively), a GABAA receptor agonist. Among food-deprived females, there was a bimodal pattern in the frequency of gerbils with different levels of food hoarding. High food hoarding (HFH) and low food hoarding (LFH) gerbils were analyzed. Diazepam blocked food deprivation-induced food hoarding in HFH gerbils, but not in LFH gerbils. This blockade was associated with increased cellular activation in selected brain areas, such as the nucleus accumbens (NAcc), caudate putamen (CP) and ventral tegmental area (VTA), which suggested that direct activation of GABA in the brain reward circuitry decreased food hoarding in HFH females. Moreover, diazepam increased Fos expression in field CA2 and CA3 of the hippocampus, but had no significant effect on Fos expression in field CA1 and dentate gyrus (DG) of the hippocampus, indicating that the hippocampus has area-specific effects on food hoarding in HFH gerbils. Diazepam did not alter food intake in both HFH and LFH gerbils. In addition, serum corticosterone concentrations were higher in the HFH than in the LFH ones. Together, these data indicated that food deprivation increased food hoarding in female gerbils, diazepam reduced food deprivation-induced food hoarding in HFH gerbils, and that GABA might influence food hoarding via classical reward circuitry via the mesolimbic dopamine system and specific hippocampal areas. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Yang, Hui-Di AU - Yang HD AD - State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Science, Beijing 100101, China; Department of Physiology, Basic Medical College, Inner Mongolia Medical University, Huhehaote 010110, China. FAU - Wang, Qian AU - Wang Q AD - State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Science, Beijing 100101, China; Graduate School of the Chinese Academy of Sciences, Yuquan Lu, Beijing 100049, China. FAU - Wang, De-Hua AU - Wang DH AD - State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Science, Beijing 100101, China. Electronic address: wangdh@ioz.ac.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140326 PL - United States TA - Horm Behav JT - Hormones and behavior JID - 0217764 RN - 0 (GABA-A Receptor Agonists) RN - Q3JTX2Q7TU (Diazepam) SB - IM MH - Animals MH - Diazepam/administration & dosage/*pharmacology MH - Eating/*drug effects MH - Feeding Behavior/*drug effects MH - Female MH - Food Deprivation/physiology MH - GABA-A Receptor Agonists/administration & dosage/*pharmacology MH - Gerbillinae/*physiology MH - Hippocampus/*drug effects MH - Reward OTO - NOTNLM OT - Diazepam OT - Food hoarding OT - GABA OT - Hippocampus OT - Reward circuitry EDAT- 2014/04/01 06:00 MHDA- 2015/02/11 06:00 CRDT- 2014/04/01 06:00 PHST- 2013/11/08 00:00 [received] PHST- 2014/02/26 00:00 [revised] PHST- 2014/03/18 00:00 [accepted] PHST- 2014/04/01 06:00 [entrez] PHST- 2014/04/01 06:00 [pubmed] PHST- 2015/02/11 06:00 [medline] AID - S0018-506X(14)00051-8 [pii] AID - 10.1016/j.yhbeh.2014.03.010 [doi] PST - ppublish SO - Horm Behav. 2014 Jun;66(1):186-95. doi: 10.1016/j.yhbeh.2014.03.010. Epub 2014 Mar 26.