Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain Activity
To study the interplay of metabolic state (hungry vs. satiated) and glucose administration (including hormonal modulation) on brain function, resting-state functional magnetic resonance imaging (rs-fMRI) and blood samples were obtained in 24 healthy normal-weight men in a repeated measurement design...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-05-01
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| Series: | Frontiers in Human Neuroscience |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fnhum.2019.00162/full |
| _version_ | 1818613987839836160 |
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| author | Arkan Al-Zubaidi Marcus Heldmann Marcus Heldmann Alfred Mertins Georg Brabant Janis Marc Nolde Kamila Jauch-Chara Thomas F. Münte Thomas F. Münte |
| author_facet | Arkan Al-Zubaidi Marcus Heldmann Marcus Heldmann Alfred Mertins Georg Brabant Janis Marc Nolde Kamila Jauch-Chara Thomas F. Münte Thomas F. Münte |
| author_sort | Arkan Al-Zubaidi |
| collection | DOAJ |
| description | To study the interplay of metabolic state (hungry vs. satiated) and glucose administration (including hormonal modulation) on brain function, resting-state functional magnetic resonance imaging (rs-fMRI) and blood samples were obtained in 24 healthy normal-weight men in a repeated measurement design. Participants were measured twice: once after a 36 h fast (except water) and once under satiation (three meals/day for 36 h). During each session, rs-fMRI and hormone concentrations were recorded before and after a 75 g oral dose of glucose. We calculated the amplitude map from blood-oxygen-level-dependent (BOLD) signals by using the fractional amplitude of low-frequency fluctuation (fALFF) approach for each volunteer per condition. Using multiple linear regression analysis (MLRA) the interdependence of brain activity, plasma insulin and blood glucose was investigated. We observed a modulatory impact of fasting state on intrinsic brain activity in the posterior cingulate cortex (PCC). Strikingly, differences in plasma insulin levels between hunger and satiety states after glucose administration at the time of the scan were negatively related to brain activity in the posterior insula and superior frontal gyrus (SFG), while plasma glucose levels were positively associated with activity changes in the fusiform gyrus. Furthermore, we could show that changes in plasma insulin enhanced the connectivity between the posterior insula and SFG. Our results indicate that hormonal signals like insulin alleviate an acute hemostatic energy deficit by modifying the homeostatic and frontal circuitry of the human brain. |
| first_indexed | 2024-12-16T16:10:51Z |
| format | Article |
| id | doaj.art-f0a8242c24ac483794b376c89b4a66bd |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-16T16:10:51Z |
| publishDate | 2019-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-f0a8242c24ac483794b376c89b4a66bd2022-12-21T22:25:14ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612019-05-011310.3389/fnhum.2019.00162420805Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain ActivityArkan Al-Zubaidi0Marcus Heldmann1Marcus Heldmann2Alfred Mertins3Georg Brabant4Janis Marc Nolde5Kamila Jauch-Chara6Thomas F. Münte7Thomas F. Münte8Department of Neurology, University of Lübeck, Lübeck, GermanyDepartment of Neurology, University of Lübeck, Lübeck, GermanyInstitute of Psychology II, University of Lübeck, Lübeck, GermanyInstitute for Signal Processing, University of Lübeck, Lübeck, GermanyDepartment of Internal Medicine I, University of Lübeck, Lübeck, GermanyDepartment of Neurology, University of Lübeck, Lübeck, GermanyDepartment of Psychiatry and Psychotherapy, Christian-Albrechts-University, Kiel, GermanyDepartment of Neurology, University of Lübeck, Lübeck, GermanyInstitute of Psychology II, University of Lübeck, Lübeck, GermanyTo study the interplay of metabolic state (hungry vs. satiated) and glucose administration (including hormonal modulation) on brain function, resting-state functional magnetic resonance imaging (rs-fMRI) and blood samples were obtained in 24 healthy normal-weight men in a repeated measurement design. Participants were measured twice: once after a 36 h fast (except water) and once under satiation (three meals/day for 36 h). During each session, rs-fMRI and hormone concentrations were recorded before and after a 75 g oral dose of glucose. We calculated the amplitude map from blood-oxygen-level-dependent (BOLD) signals by using the fractional amplitude of low-frequency fluctuation (fALFF) approach for each volunteer per condition. Using multiple linear regression analysis (MLRA) the interdependence of brain activity, plasma insulin and blood glucose was investigated. We observed a modulatory impact of fasting state on intrinsic brain activity in the posterior cingulate cortex (PCC). Strikingly, differences in plasma insulin levels between hunger and satiety states after glucose administration at the time of the scan were negatively related to brain activity in the posterior insula and superior frontal gyrus (SFG), while plasma glucose levels were positively associated with activity changes in the fusiform gyrus. Furthermore, we could show that changes in plasma insulin enhanced the connectivity between the posterior insula and SFG. Our results indicate that hormonal signals like insulin alleviate an acute hemostatic energy deficit by modifying the homeostatic and frontal circuitry of the human brain.https://www.frontiersin.org/article/10.3389/fnhum.2019.00162/fullresting state fMRIhungersatietyglucose administrationfALFFinsulin levels |
| spellingShingle | Arkan Al-Zubaidi Marcus Heldmann Marcus Heldmann Alfred Mertins Georg Brabant Janis Marc Nolde Kamila Jauch-Chara Thomas F. Münte Thomas F. Münte Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain Activity Frontiers in Human Neuroscience resting state fMRI hunger satiety glucose administration fALFF insulin levels |
| title | Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain Activity |
| title_full | Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain Activity |
| title_fullStr | Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain Activity |
| title_full_unstemmed | Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain Activity |
| title_short | Impact of Hunger, Satiety, and Oral Glucose on the Association Between Insulin and Resting-State Human Brain Activity |
| title_sort | impact of hunger satiety and oral glucose on the association between insulin and resting state human brain activity |
| topic | resting state fMRI hunger satiety glucose administration fALFF insulin levels |
| url | https://www.frontiersin.org/article/10.3389/fnhum.2019.00162/full |
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