The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine.
The histaminergic system is one component of the ascending arousal system which is involved in wakefulness, neuroendocrine control, cognition, psychiatric disorders and motivation. During the appetitive phase of motivated behaviors the arousal state rises to an optimal level, thus giving proper inte...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2016-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC4743640?pdf=render |
| _version_ | 1828865348978343936 |
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| author | Marco Contreras María E Riveros Maricel Quispe Cristián Sánchez Guayec Perdomo Fernando Torrealba José L Valdés |
| author_facet | Marco Contreras María E Riveros Maricel Quispe Cristián Sánchez Guayec Perdomo Fernando Torrealba José L Valdés |
| author_sort | Marco Contreras |
| collection | DOAJ |
| description | The histaminergic system is one component of the ascending arousal system which is involved in wakefulness, neuroendocrine control, cognition, psychiatric disorders and motivation. During the appetitive phase of motivated behaviors the arousal state rises to an optimal level, thus giving proper intensity to the behavior. Previous studies have demonstrated that the histaminergic neurons show an earlier activation during the appetitive phase of feeding, compared to other ascending arousal system nuclei, paralleled with a high increase in arousal state. Lesions restricted to the histaminergic neurons in rats reduced their motivation to get food even after 24 h of food deprivation, compared with intact or sham lesioned rats. Taken together, these findings indicate that the histaminergic system is important for appetitive behavior related to feeding. However, its role in other goal-directed behaviors remains unexplored. In the present work, male rats rendered motivated to obtain water, sex, or amphetamine showed an increase in Fos-ir of histaminergic neurons in appetitive behaviors directed to get those reinforcers. However, during appetitive tests to obtain sex, or drug in amphetamine-conditioned rats, Fos expression increased in most other ascending arousal system nuclei, including the orexin neurons in the lateral hypothalamus, dorsal raphe, locus coeruleus and laterodorsal tegmental neurons, but not in the ventral tegmental area, which showed no Fos-ir increase in any of the 3 conditions. Importantly, all these appetitive behaviors were drastically reduced after histaminergic cell-specific lesion, suggesting a critical contribution of histamine on the intensity component of several appetitive behaviors. |
| first_indexed | 2024-12-13T04:27:46Z |
| format | Article |
| id | doaj.art-625c8ef0944041e582ec1a69f472805e |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-13T04:27:46Z |
| publishDate | 2016-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-625c8ef0944041e582ec1a69f472805e2022-12-21T23:59:39ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01112e014848410.1371/journal.pone.0148484The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine.Marco ContrerasMaría E RiverosMaricel QuispeCristián SánchezGuayec PerdomoFernando TorrealbaJosé L ValdésThe histaminergic system is one component of the ascending arousal system which is involved in wakefulness, neuroendocrine control, cognition, psychiatric disorders and motivation. During the appetitive phase of motivated behaviors the arousal state rises to an optimal level, thus giving proper intensity to the behavior. Previous studies have demonstrated that the histaminergic neurons show an earlier activation during the appetitive phase of feeding, compared to other ascending arousal system nuclei, paralleled with a high increase in arousal state. Lesions restricted to the histaminergic neurons in rats reduced their motivation to get food even after 24 h of food deprivation, compared with intact or sham lesioned rats. Taken together, these findings indicate that the histaminergic system is important for appetitive behavior related to feeding. However, its role in other goal-directed behaviors remains unexplored. In the present work, male rats rendered motivated to obtain water, sex, or amphetamine showed an increase in Fos-ir of histaminergic neurons in appetitive behaviors directed to get those reinforcers. However, during appetitive tests to obtain sex, or drug in amphetamine-conditioned rats, Fos expression increased in most other ascending arousal system nuclei, including the orexin neurons in the lateral hypothalamus, dorsal raphe, locus coeruleus and laterodorsal tegmental neurons, but not in the ventral tegmental area, which showed no Fos-ir increase in any of the 3 conditions. Importantly, all these appetitive behaviors were drastically reduced after histaminergic cell-specific lesion, suggesting a critical contribution of histamine on the intensity component of several appetitive behaviors.http://europepmc.org/articles/PMC4743640?pdf=render |
| spellingShingle | Marco Contreras María E Riveros Maricel Quispe Cristián Sánchez Guayec Perdomo Fernando Torrealba José L Valdés The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine. PLoS ONE |
| title | The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine. |
| title_full | The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine. |
| title_fullStr | The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine. |
| title_full_unstemmed | The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine. |
| title_short | The Histaminergic Tuberomamillary Nucleus Is Involved in Appetite for Sex, Water and Amphetamine. |
| title_sort | histaminergic tuberomamillary nucleus is involved in appetite for sex water and amphetamine |
| url | http://europepmc.org/articles/PMC4743640?pdf=render |
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