Journal article 1194 views
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation
Brianne A. Kent,
Amy L. Beynon,
Amanda K.E. Hornsby,
Pedro Bekinschtein,
Timothy J. Bussey,
Jeffrey Davies
,
Lisa M. Saksida
Psychoneuroendocrinology, Volume: 51, Pages: 431 - 439
Swansea University Author:
Jeffrey Davies
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DOI (Published version): 10.1016/j.psyneuen.2014.10.015
Abstract
An important link exists between intact metabolic processes and normal cognitive functioning; however, the underlying mechanisms remain unknown. There is accumulating evidence that the gut hormone ghrelin, an orexigenic peptide that is elevated during calorie restriction (CR) and known primarily for...
Published in: | Psychoneuroendocrinology |
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2014
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http://www.sciencedirect.com/science/article/pii/S0306453014003990 |
URI: | https://cronfa.swan.ac.uk/Record/cronfa19690 |
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2018-07-20T11:32:49.4139503 v2 19690 2014-12-03 The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation 2cb3d1d96a7870a84d2f758e865172e6 0000-0002-4234-0033 Jeffrey Davies Jeffrey Davies true false 2014-12-03 BMS An important link exists between intact metabolic processes and normal cognitive functioning; however, the underlying mechanisms remain unknown. There is accumulating evidence that the gut hormone ghrelin, an orexigenic peptide that is elevated during calorie restriction (CR) and known primarily for stimulating growth hormone release, has important extra-hypothalamic functions, such as enhancing synaptic plasticity and hippocampal neurogenesis. The present study was designed to evaluate the long-term effects of elevating acyl-ghrelin levels, albeit within the physiological range, on the number of new adult born neurons in the dentate gyrus (DG) and performance on the Spontaneous Location Recognition (SLR) task, previously shown to be DG-dependent and sensitive to manipulations of plasticity mechanisms and cell proliferation. The results revealed that peripheral treatment of rats with acyl-ghrelin enhanced both adult hippocampal neurogenesis and performance on SLR when measured 8–10 days after the end of acyl-ghrelin treatment. Our data show that systemic administration of physiological levels of acyl-ghrelin can produce long-lasting improvements in spatial memory that persist following the end of treatment. As ghrelin is potentially involved in regulating the relationship between metabolic and cognitive dysfunction in ageing and neurodegenerative disease, elucidating the underlying mechanisms holds promise for identifying novel therapeutic targets and modifiable lifestyle factors that may have beneficial effects on the brain. Journal Article Psychoneuroendocrinology 51 431 439 Adult hippocampal neurogenesis; Ghrelin; Pattern separation 23 10 2014 2014-10-23 10.1016/j.psyneuen.2014.10.015 http://www.sciencedirect.com/science/article/pii/S0306453014003990 COLLEGE NANME Biomedical Sciences COLLEGE CODE BMS Swansea University 2018-07-20T11:32:49.4139503 2014-12-03T20:07:03.2284950 Faculty of Medicine, Health and Life Sciences Swansea University Medical School - Medicine Brianne A. Kent 1 Amy L. Beynon 2 Amanda K.E. Hornsby 3 Pedro Bekinschtein 4 Timothy J. Bussey 5 Jeffrey Davies 0000-0002-4234-0033 6 Lisa M. Saksida 7 |
title |
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation |
spellingShingle |
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation Jeffrey Davies |
title_short |
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation |
title_full |
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation |
title_fullStr |
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation |
title_full_unstemmed |
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation |
title_sort |
The orexigenic hormone acyl-ghrelin increases adult hippocampal neurogenesis and enhances pattern separation |
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2cb3d1d96a7870a84d2f758e865172e6 |
author_id_fullname_str_mv |
2cb3d1d96a7870a84d2f758e865172e6_***_Jeffrey Davies |
author |
Jeffrey Davies |
author2 |
Brianne A. Kent Amy L. Beynon Amanda K.E. Hornsby Pedro Bekinschtein Timothy J. Bussey Jeffrey Davies Lisa M. Saksida |
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Psychoneuroendocrinology |
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51 |
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431 |
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2014 |
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Swansea University |
doi_str_mv |
10.1016/j.psyneuen.2014.10.015 |
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Faculty of Medicine, Health and Life Sciences |
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Faculty of Medicine, Health and Life Sciences |
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Faculty of Medicine, Health and Life Sciences |
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Swansea University Medical School - Medicine{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}Swansea University Medical School - Medicine |
url |
http://www.sciencedirect.com/science/article/pii/S0306453014003990 |
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description |
An important link exists between intact metabolic processes and normal cognitive functioning; however, the underlying mechanisms remain unknown. There is accumulating evidence that the gut hormone ghrelin, an orexigenic peptide that is elevated during calorie restriction (CR) and known primarily for stimulating growth hormone release, has important extra-hypothalamic functions, such as enhancing synaptic plasticity and hippocampal neurogenesis. The present study was designed to evaluate the long-term effects of elevating acyl-ghrelin levels, albeit within the physiological range, on the number of new adult born neurons in the dentate gyrus (DG) and performance on the Spontaneous Location Recognition (SLR) task, previously shown to be DG-dependent and sensitive to manipulations of plasticity mechanisms and cell proliferation. The results revealed that peripheral treatment of rats with acyl-ghrelin enhanced both adult hippocampal neurogenesis and performance on SLR when measured 8–10 days after the end of acyl-ghrelin treatment. Our data show that systemic administration of physiological levels of acyl-ghrelin can produce long-lasting improvements in spatial memory that persist following the end of treatment. As ghrelin is potentially involved in regulating the relationship between metabolic and cognitive dysfunction in ageing and neurodegenerative disease, elucidating the underlying mechanisms holds promise for identifying novel therapeutic targets and modifiable lifestyle factors that may have beneficial effects on the brain. |
published_date |
2014-10-23T03:23:11Z |
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1763750750763089920 |
score |
11.013619 |