1
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Numan L, Wösten M, Moazeni M, Aarts E, Van der Kaaij NP, Fresiello L, Asselbergs FW, Van Laake LW. Circadian rhythms in pump parameters of patients on contemporary left ventricular assist device support. Artif Organs 2023; 47:1893-1897. [PMID: 37635632 DOI: 10.1111/aor.14628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/07/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND Algorithms to monitor pump parameters are needed to further improve outcomes after left ventricular assist device (LVAD) implantation. Previous research showed a restored circadian rhythm in pump parameters in patients on HeartWare (HVAD) support. Circadian patterns in HeartMate3 (HM3) were not studied before, but this is important for the development of LVAD monitoring algorithms. Hence, we aimed to describe circadian patterns in HM3 parameters and their relation to patterns in heart rate (HR). METHODS 18 HM3 patients were included in this study. HM3 data were retrieved at a high frequency (one sample per 1 or 2 h) for 1-2 weeks. HR was measured using a wearable biosensor. To study overall patterns in HM3 parameters and HR, a heatmap was created. A 24-h cosine was fitted on power and HR separately. The relationship between the amplitude of the fitted cosines of power and HR was calculated using Spearman correlation. RESULTS A lower between patient variability was found in power compared with flow and PI. 83% of the patients showed a significant circadian rhythmicity in power (p < 0.001-0.04), with a clear morning increase. All patients showed significant circadian rhythmicity in HR (p < 0.001-0.02). The amplitudes of the circadian rhythm in power and HR were not correlated (Spearman correlation of 0.32, p = 0.19). CONCLUSIONS A circadian rhythm of pump parameters is present in the majority of HM3 patients. Higher frequency pump parameter data should be collected, to enable early detection of complications in the future development of predictive algorithms.
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Affiliation(s)
- L Numan
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
| | - M Wösten
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
- Cardiovascular and Respiratory Physiology, University of Twente, Enschede, Netherlands
| | - M Moazeni
- Department of Methodology and Statistics, Utrecht University, Utrecht, the Netherlands
| | - E Aarts
- Department of Methodology and Statistics, Utrecht University, Utrecht, the Netherlands
| | - N P Van der Kaaij
- Department of Cardiothoracic Surgery, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
| | - L Fresiello
- Cardiovascular and Respiratory Physiology, University of Twente, Enschede, Netherlands
| | - F W Asselbergs
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
- Institute of Cardiovascular Science, Faculty of Population Health Sciences, University College London, London, UK
- Health Data Research UK, Institute of Health Informatics, University College London, London, UK
- Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - L W Van Laake
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
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Lambregts BIHM, Vassena E, Jansen A, Stremmelaar DE, Pickkers P, Kox M, Aarts E, van der Schaaf ME. Fatigue during acute systemic inflammation is associated with reduced mental effort expenditure while task accuracy is preserved. Brain Behav Immun 2023:S0889-1591(23)00131-9. [PMID: 37257522 DOI: 10.1016/j.bbi.2023.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 05/12/2023] [Accepted: 05/25/2023] [Indexed: 06/02/2023] Open
Abstract
BACKGROUND Earlier work within the physical domain showed that acute inflammation changes motivational prioritization and effort allocation rather than physical abilities. It is currently unclear whether a similar motivational framework accounts for the mental fatigue and cognitive symptoms of acute sickness. Accordingly, this study aimed to assess the relationship between fatigue, cytokines and mental effort-based decision making during acute systemic inflammation. METHODS Eighty-five participants (41 males; 18-30 years (M=23.0, SD=2.4)) performed a mental effort-based decision-making task before, 2 hours after, and 5 hours after intravenous administration of 1 ng/kg bacterial lipopolysaccharide (LPS) to induce systemic inflammation. Plasma concentrations of cytokines (interleukin (IL)-6, IL-8 and tumor necrosis factor (TNF)) and fatigue levels were assessed at similar timepoints. In the task, participants decided whether they wanted to perform (i.e., 'accepted') arithmetic calculations of varying difficulty (3 levels: easy, medium, hard) in order to obtain rewards (3 levels: 5, 6 or 7 points). Acceptance rates were analyzed using a binomial generalized estimated equation (GEE) approach with effort, reward and time as independent variables. Arithmetic performance was measured per effort level prior to the decisions and included as a covariate. Associations between acceptance rates, fatigue (self-reported) and cytokine concentrations levels were analyzed using partial correlation analyses. RESULTS Plasma cytokine concentrations and fatigue were increased at 2 hours post-LPS compared to baseline and 5 hours post-LPS administration. Acceptance rates decreased for medium, but not for easy or hard effort levels at 2 hours post-LPS versus baseline and 5 hours post-LPS administration, irrespective of reward level. This reduction in acceptance rates occurred despite improved accuracy on the arithmetic calculations itself. Reduced acceptance rates for medium effort were associated with increased fatigue, but not with increased cytokines. CONCLUSION Fatigue during acute systemic inflammation is associated with alterations in mental effort allocation, similarly as observed previously for physical effort-based choice. Specifically, willingness to exert mental effort depended on effort and not reward information, while task accuracy was preserved. These results extend the motivational account of inflammation to the mental domain and suggest that inflammation may not necessarily affect domain-specific mental abilities, but rather affects domain-general effort-allocation processes.
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Affiliation(s)
- B I H M Lambregts
- Department of Psychiatry, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behaviour, Radboud University Postbus 9104, HE Nijmegen, The Netherlands.
| | - E Vassena
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Postbus 9104, HE Nijmegen, The Netherlands; Experimental Psychopathology and Treatment, Behavioural Science Institute Radboud University Nijmegen Postbus 9104, 6500 HE Nijmegen, The Netherlands.
| | - A Jansen
- Department of Intensive Care Medicine, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands; Radboud Center for Infectious Diseases, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands.
| | - D E Stremmelaar
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Postbus 9104, HE Nijmegen, The Netherlands.
| | - P Pickkers
- Department of Intensive Care Medicine, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands; Radboud Center for Infectious Diseases, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands.
| | - M Kox
- Department of Intensive Care Medicine, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands; Radboud Center for Infectious Diseases, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands.
| | - E Aarts
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Postbus 9104, HE Nijmegen, The Netherlands.
| | - M E van der Schaaf
- Department of Psychiatry, Radboud University Medical Center Postbus 9101, 6500 HB Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behaviour, Radboud University Postbus 9104, HE Nijmegen, The Netherlands; Department of Cognitive Neuropsychology, Tilburg University Postbus 90153, 5000 LE Tilburg, The Netherlands.
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Felix SEA, Numan L, Oerlemans MIF, Aarts E, Ramjankhan FZ, Gianoli M, Asselbergs FW, de Jonge N, van Laake LW. Incidence and risk factors of late right heart failure in chronic mechanical circulatory support. Artif Organs 2023. [PMID: 37032516 DOI: 10.1111/aor.14537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/17/2023] [Accepted: 04/06/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND Late right heart failure (LRHF) is a common complication during long-term left ventricular assist device (LVAD) support. We aimed to identify risk factors for LRHF after LVAD implantation. METHODS Patients undergoing primary LVAD implantation between 2006-2019 and surviving the perioperative period were included for this study (n=261). Univariate Cox proportional hazards analysis was used to assess the association of clinical covariates and LRHF, stratified for device type. Variables with p<0.10 entered the multivariable model. In a subset of patients with complete echocardiography or right catheterization data this multivariable model was extended. Post-operative cardiopulmonary exercise test data were compared in patients with and without LRHF. RESULTS 19% patients suffered from LRHF after a median of 12 months, of which 67% required hospitalization. A history of atrial fibrillation (AF) (HR:2.06 [1.08-3.93], p=0.029), a higher pre-operative body mass index (BMI) (HR: 1.07 [1.01-1.13], p=0.023) and intensive care unit (ICU) duration (HR: 1.03 [1.00-1.06], p=0.025) were independent predictors of LHRF in the multivariable model. A significant relation between the severity of tricuspid regurgitation (TR) and LRHF (HR: 1.91 [1.13-3.21], p=0.016) was found in patients with echocardiographic data. Patients with LRHF demonstrated a lower maximal workload and peak VO2 at 6 months postoperatively. CONCLUSION A history of AF, BMI and longer ICU stay may help identify patients at high risk for LRHF. Severity of TR was significantly related to LRHF in a subset of patients.
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Affiliation(s)
- Susanne E A Felix
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
- Department of Cardiology, Catharina Hospital Eindhoven, The Netherlands
| | - Lieke Numan
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
| | - Marish I F Oerlemans
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
| | - E Aarts
- Department of Methodology and Statistics, Utrecht University, Utrecht, the Netherlands
| | - Faiz Z Ramjankhan
- Department of Cardiothoracic surgery, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
| | - Monica Gianoli
- Department of Cardiothoracic surgery, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
| | - Folkert W Asselbergs
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
- Institute of Cardiovascular Science, Faculty of Population Health Sciences, University College London, London, UK
- Health Data Research UK and Institute of Health Informatics, University College London, London, UK
- Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Nicolaas de Jonge
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
| | - Linda W van Laake
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, University of Utrecht, the Netherlands
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Numan L, Aarts E, Ramjankhan F, Van Der Meer M, Oerlemans M, De Jonge N, Oppelaar A, Kemperman H, Asselbergs F, Van Laake L. Soluble Suppression of Tumorigenicity-2 (sst2) Predicts Mortality and Right Heart Failure in Lvad Patients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Numan L, Moazeni M, Aarts E, Szymanski M, Van der Kaaij N, Asselbergs F, Van Laake L. Remote Monitoring of Patients on Left Ventricular Assist Device (lvad) Support: A Proof-Of-concept Study. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Aalbers B, Amatngalim G, Aarts E, Rodenburg L, Oosterhoff L, Heijerman H, Beekman J. P017 Using chamber measurement of CFTR modulator effects in airway epithelial cells and its correlation to clinical effects of treatment. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00350-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Numan L, Aarts E, Ramjankhan F, van der Meer M, Jonge N, Oppelaar A, Asselbergs F, van Laake L. Predictive Role of Soluble ST2 in Patients on Left Ventricular Assist Device Support. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Kohn N, Szopinska-Tokov J, Llera Arenas A, Beckmann C, Arias-Vasquez A, Aarts E. Multivariate associative patterns between the gut microbiota and large-scale brain network connectivity. Gut Microbes 2021; 13:2006586. [PMID: 34856861 PMCID: PMC8726725 DOI: 10.1080/19490976.2021.2006586] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 10/21/2021] [Accepted: 11/02/2021] [Indexed: 02/04/2023] Open
Abstract
Research on the gut-brain axis has accelerated substantially over the course of the last years. Many reviews have outlined the important implications of understanding the relation of the gut microbiota with human brain function and behavior. One substantial drawback in integrating gut microbiome and brain data is the lack of integrative multivariate approaches that enable capturing variance in both modalities simultaneously. To address this issue, we applied a linked independent component analysis (LICA) to microbiota and brain connectivity data.We analyzed data from 58 healthy females (mean age = 21.5 years). Magnetic Resonance Imaging data were acquired using resting state functional imaging data. The assessment of gut microbial composition from feces was based on sequencing of the V4 16S rRNA gene region. We used the LICA model to simultaneously factorize the subjects' large-scale brain networks and microbiome relative abundance data into 10 independent components of spatial and abundance variation.LICA decomposition resulted in four components with non-marginal contribution of the microbiota data. The default mode network featured strongly in three components, whereas the two-lateralized fronto-parietal attention networks contributed to one component. The executive-control (with the default mode) network was associated to another component. We found that the abundance of Prevotella genus was associated with the strength of expression of all networks, whereas Bifidobacterium was associated with the default mode and frontoparietal-attention networks.We provide the first exploratory evidence for multivariate associative patterns between the gut microbiota and brain network connectivity in healthy humans considering the complexity of both systems.
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Affiliation(s)
- N. Kohn
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, The Netherlands
- Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - J. Szopinska-Tokov
- Department of Psychiatry, Donders Institute for Brain, Nijmegen, The Netherlands
- Department of Human Genetics, Donders Institute for Brain, Nijmegen, The Netherlands
| | - A. Llera Arenas
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, The Netherlands
- Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - C.F. Beckmann
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, The Netherlands
- Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - A. Arias-Vasquez
- Department of Psychiatry, Donders Institute for Brain, Nijmegen, The Netherlands
- Department of Human Genetics, Donders Institute for Brain, Nijmegen, The Netherlands
| | - E Aarts
- Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
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Papalini S, Michels F, Kohn N, Wegman J, van Hemert S, Roelofs K, Arias-Vasquez A, Aarts E. Stress matters: Randomized controlled trial on the effect of probiotics on neurocognition. Neurobiol Stress 2018; 10:100141. [PMID: 30937347 PMCID: PMC6430409 DOI: 10.1016/j.ynstr.2018.100141] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 10/06/2018] [Accepted: 12/05/2018] [Indexed: 12/22/2022] Open
Abstract
Probiotics are microorganisms that provide health benefits when consumed. In animals, probiotics reverse gut microbiome-related alterations in depression-like symptoms, in cognition, and in hormonal stress response. However, in humans, a causal understanding of the gut-brain link in emotion and cognition is lacking. Additionally, whether the effects of probiotics on neurocognition are visible only in presence of stress, remains unclear. We investigated the effects of a multispecies probiotic (Ecologic®Barrier) on specific neurocognitive measures of emotion reactivity, emotion regulation, and cognitive control using fMRI. Critically, we also tested whether probiotics can buffer against the detrimental effects of acute stress on working memory. In a double blind, randomized, placebo-controlled, between-subjects intervention study, 58 healthy participants were tested once before and once after a 28-day intervention. Without stress induction, probiotics did not affect brain, behavioral, or related self-report measures. However, relative to placebo, the probiotics group did show a significant stress-related increase in working memory performance after supplementation. This change was associated with intervention-related neural changes in frontal cortex during cognitive control exclusively in the probiotics group. Overall, our results show neurocognitive effects of a multispecies probiotic in healthy women only under challenging situations, buffering against the detrimental effects of stress on cognition. We ran a randomized placebo-controlled fMRI study with a multispecies probiotic. Probiotics did not affect neurocognitive measures of emotion and cognitive control. Probiotics did affect stress-related working memory and neural correlates. Probiotics in healthy individuals can support cognition under stress.
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Affiliation(s)
- S. Papalini
- Radboud University, Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, the Netherlands
| | - F. Michels
- Radboud University, Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, the Netherlands
| | - N. Kohn
- Radboud University, Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, the Netherlands
| | - J. Wegman
- Radboud University, Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, the Netherlands
| | | | - K. Roelofs
- Radboud University, Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, the Netherlands
| | - A. Arias-Vasquez
- Radboud University Medical Center, Departments of Psychiatry, Human Genetics & Cognitive Neuroscience, Nijmegen, the Netherlands
| | - E. Aarts
- Radboud University, Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, the Netherlands
- Corresponding author. Kapittelweg 29, 6525 EN, Nijmegen, the Netherlands.
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Wegman J, van Loon I, Smeets P, Cools R, Aarts E. Neural top-down influences of food labeling on implicit food wanting. Appetite 2016. [DOI: 10.1016/j.appet.2016.02.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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van Loon I, Wegman J, Cools R, Aarts E. The effect of food cues on focused attention. Appetite 2016. [DOI: 10.1016/j.appet.2016.02.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Val-Laillet D, Aarts E, Weber B, Ferrari M, Quaresima V, Stoeckel L, Alonso-Alonso M, Audette M, Malbert C, Stice E. Neuroimaging and neuromodulation approaches to study eating behavior and prevent and treat eating disorders and obesity. Neuroimage Clin 2015; 8:1-31. [PMID: 26110109 PMCID: PMC4473270 DOI: 10.1016/j.nicl.2015.03.016] [Citation(s) in RCA: 275] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/18/2015] [Accepted: 03/19/2015] [Indexed: 12/11/2022]
Abstract
Functional, molecular and genetic neuroimaging has highlighted the existence of brain anomalies and neural vulnerability factors related to obesity and eating disorders such as binge eating or anorexia nervosa. In particular, decreased basal metabolism in the prefrontal cortex and striatum as well as dopaminergic alterations have been described in obese subjects, in parallel with increased activation of reward brain areas in response to palatable food cues. Elevated reward region responsivity may trigger food craving and predict future weight gain. This opens the way to prevention studies using functional and molecular neuroimaging to perform early diagnostics and to phenotype subjects at risk by exploring different neurobehavioral dimensions of the food choices and motivation processes. In the first part of this review, advantages and limitations of neuroimaging techniques, such as functional magnetic resonance imaging (fMRI), positron emission tomography (PET), single photon emission computed tomography (SPECT), pharmacogenetic fMRI and functional near-infrared spectroscopy (fNIRS) will be discussed in the context of recent work dealing with eating behavior, with a particular focus on obesity. In the second part of the review, non-invasive strategies to modulate food-related brain processes and functions will be presented. At the leading edge of non-invasive brain-based technologies is real-time fMRI (rtfMRI) neurofeedback, which is a powerful tool to better understand the complexity of human brain-behavior relationships. rtfMRI, alone or when combined with other techniques and tools such as EEG and cognitive therapy, could be used to alter neural plasticity and learned behavior to optimize and/or restore healthy cognition and eating behavior. Other promising non-invasive neuromodulation approaches being explored are repetitive transcranial magnetic stimulation (rTMS) and transcranial direct-current stimulation (tDCS). Converging evidence points at the value of these non-invasive neuromodulation strategies to study basic mechanisms underlying eating behavior and to treat its disorders. Both of these approaches will be compared in light of recent work in this field, while addressing technical and practical questions. The third part of this review will be dedicated to invasive neuromodulation strategies, such as vagus nerve stimulation (VNS) and deep brain stimulation (DBS). In combination with neuroimaging approaches, these techniques are promising experimental tools to unravel the intricate relationships between homeostatic and hedonic brain circuits. Their potential as additional therapeutic tools to combat pharmacorefractory morbid obesity or acute eating disorders will be discussed, in terms of technical challenges, applicability and ethics. In a general discussion, we will put the brain at the core of fundamental research, prevention and therapy in the context of obesity and eating disorders. First, we will discuss the possibility to identify new biological markers of brain functions. Second, we will highlight the potential of neuroimaging and neuromodulation in individualized medicine. Third, we will introduce the ethical questions that are concomitant to the emergence of new neuromodulation therapies.
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Key Words
- 5-HT, serotonin
- ADHD, attention deficit hyperactivity disorder
- AN, anorexia nervosa
- ANT, anterior nucleus of the thalamus
- B N, bulimia nervosa
- BAT, brown adipose tissue
- BED, binge eating disorder
- BMI, body mass index
- BOLD, blood oxygenation level dependent
- BS, bariatric surgery
- Brain
- CBF, cerebral blood flow
- CCK, cholecystokinin
- Cg25, subgenual cingulate cortex
- DA, dopamine
- DAT, dopamine transporter
- DBS, deep brain stimulation
- DBT, deep brain therapy
- DTI, diffusion tensor imaging
- ED, eating disorders
- EEG, electroencephalography
- Eating disorders
- GP, globus pallidus
- HD-tDCS, high-definition transcranial direct current stimulation
- HFD, high-fat diet
- HHb, deoxygenated-hemoglobin
- Human
- LHA, lateral hypothalamus
- MER, microelectrode recording
- MRS, magnetic resonance spectroscopy
- Nac, nucleus accumbens
- Neuroimaging
- Neuromodulation
- O2Hb, oxygenated-hemoglobin
- OCD, obsessive–compulsive disorder
- OFC, orbitofrontal cortex
- Obesity
- PD, Parkinson's disease
- PET, positron emission tomography
- PFC, prefrontal cortex
- PYY, peptide tyrosine tyrosine
- SPECT, single photon emission computed tomography
- STN, subthalamic nucleus
- TMS, transcranial magnetic stimulation
- TRD, treatment-resistant depression
- VBM, voxel-based morphometry
- VN, vagus nerve
- VNS, vagus nerve stimulation
- VS, ventral striatum
- VTA, ventral tegmental area
- aCC, anterior cingulate cortex
- dTMS, deep transcranial magnetic stimulation
- daCC, dorsal anterior cingulate cortex
- dlPFC, dorsolateral prefrontal cortex
- fMRI, functional magnetic resonance imaging
- fNIRS, functional near-infrared spectroscopy
- lPFC, lateral prefrontal cortex
- pCC, posterior cingulate cortex
- rCBF, regional cerebral blood flow
- rTMS, repetitive transcranial magnetic stimulation
- rtfMRI, real-time functional magnetic resonance imaging
- tACS, transcranial alternate current stimulation
- tDCS, transcranial direct current stimulation
- tRNS, transcranial random noise stimulation
- vlPFC, ventrolateral prefrontal cortex
- vmH, ventromedial hypothalamus
- vmPFC, ventromedial prefrontal cortex
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Affiliation(s)
| | - E. Aarts
- Radboud University, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - B. Weber
- Department of Epileptology, University Hospital Bonn, Germany
| | - M. Ferrari
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy
| | - V. Quaresima
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy
| | - L.E. Stoeckel
- Massachusetts General Hospital, Harvard Medical School, USA
| | - M. Alonso-Alonso
- Beth Israel Deaconess Medical Center, Harvard Medical School, USA
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de Weijer BA, Aarts E, Janssen IMC, Berends FJ, van de Laar A, Kaasjager K, Ackermans MT, Fliers E, Serlie MJ. Hepatic and peripheral insulin sensitivity do not improve 2 weeks after bariatric surgery. Obesity (Silver Spring) 2013; 21:1143-7. [PMID: 23913729 DOI: 10.1002/oby.20220] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Bariatric surgery has rapid metabolic effects on glucose metabolism before the occurrence of clinically significant weight loss. This suggests an acute effect of the surgery itself, e.g., resulting from bypassing the nutrient flow from the proximal gastrointestinal tract. Rapid effects of Roux-en-Y gastric bypass surgery (RYGB) on glucose metabolism were defined. DESIGN AND METHODS Glucose metabolism and total triglyceride hydrolysis in the basal state and during a hyperinsulinemic euglycemic clamp using stable isotopes 2 weeks were studied before and after RYGB. RESULTS Eighteen pre-menopausal women scheduled for RYGB were included. 2 weeks after RYGB median weight loss was 7.8 kg. Basal insulin and glucose levels decreased after surgery. Endogenous glucose production (EGP) was lower after surgery. In addition, insulin levels were lower during the clamp after surgery, suggesting enhanced clearance. Hepatic and peripheral insulin sensitivity did not change. Free fatty acid (FFA) levels increased after surgery both in the basal state and during the first step of the clamp. Total triglyceride hydrolysis did not change in the basal state and tended to be higher during hyperinsulinemia. CONCLUSIONS Within 2 weeks, RYGB reduces basal EGP as well as insulin and glucose levels without an acute beneficial effect on hepatic or peripheral insulin sensitivity. The latter may be explained by higher rates of lipolysis and exposure to FFA induced by the hypocaloric state.
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Affiliation(s)
- B A de Weijer
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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Smittenaar P, Chase HW, Aarts E, Nusselein B, Bloem BR, Cools R. Decomposing effects of dopaminergic medication in Parkinson's disease on probabilistic action selection--learning or performance? Eur J Neurosci 2013; 35:1144-51. [PMID: 22487043 DOI: 10.1111/j.1460-9568.2012.08043.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dopamine has long been implicated in reward-based learning and the expression of such learned associations on performance. Robust evidence supports its effects on learning and performance, but teasing these apart has proved challenging. Here we have adapted a classic test of value-based learning, the probabilistic selection task, to disentangle effects of dopamine on value-based performance from effects on value-based learning. Valence-specific effects of dopamine on this specific task cannot be accounted for by modulation of learning, and therefore must reflect modulation of performance. We found that dopaminergic medication, consisting of levodopa and/or dopamine agonists taken at own dose, in 18 patients with mild Parkinson's disease (Hoehn and Yahr < 2.5) potentiated reward-based approach in terms of both accuracy and reaction times, while leaving punishment-based avoidance unaffected. These data demonstrate that the effects of dopamine on probabilistic action selection are at least partly mediated by effects on the expression of learned associations rather than on learning itself, and help refine current models of dopamine's role in reward.
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Affiliation(s)
- P Smittenaar
- The Wellcome Trust Centre for Neuroimaging, University College London, London, UK.
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15
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Maroteaux G, Loos M, van der Sluis S, Koopmans B, Aarts E, van Gassen K, Geurts A, Largaespada DA, Spruijt BM, Stiedl O, Smit AB, Verhage M. High-throughput phenotyping of avoidance learning in mice discriminates different genotypes and identifies a novel gene. Genes Brain Behav 2012; 11:772-84. [PMID: 22846151 DOI: 10.1111/j.1601-183x.2012.00820.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 04/27/2012] [Accepted: 07/03/2012] [Indexed: 01/31/2023]
Abstract
Recognizing and avoiding aversive situations are central aspects of mammalian cognition. These abilities are essential for health and survival and are expected to have a prominent genetic basis. We modeled these abilities in eight common mouse inbred strains covering ∼75% of the species' natural variation and in gene-trap mice (>2000 mice), using an unsupervised, automated assay with an instrumented home cage (PhenoTyper) containing a shelter with two entrances. Mice visited this shelter for 20-1200 times/24 h and 71% of all mice developed a significant and often strong preference for one entrance. Subsequently, a mild aversive stimulus (shelter illumination) was automatically delivered when mice used their preferred entrance. Different genotypes developed different coping strategies. Firstly, the number of entries via the preferred entrance decreased in DBA/2J, C57BL/6J and 129S1/SvImJ, indicating that these genotypes associated one specific entrance with the aversive stimulus. Secondly, mice started sleeping outside (C57BL/6J, DBA/2J), indicating they associated the shelter, in general, with the aversive stimulus. Some mice showed no evidence for an association between the entrance and the aversive light, but did show markedly shorter shelter residence times in response to illumination, indicating they did perceive illumination as aversive. Finally, using this assay, we screened 43 different mutants, which yielded a novel gene, specc1/cytospinB. This mutant showed profound and specific delay in avoidance learning. Together, these data suggest that different genotypes express distinct learning and/or memory of associations between shelter entrance and aversive stimuli, and that specc1/cytospinB is involved in this aspect of cognition.
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Affiliation(s)
- G Maroteaux
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University Amsterdam and VU Medical Center, Amsterdam, The Netherlands
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Abstract
We investigated a group of men suffering from electric dysfunction (ED) who visited the website www.erectie.info and who had received consultation through the Internet (n = 219). We measured the treatment's effectiveness using the 5-item version of the International Index of Erectile Function (IIEF-5; Rosen et al., 1996; Rosen, Cappelleri, Smith, Lipsky, & Pena, 1999) and a global assessment question (GAQ). We investigated the motives and characteristics of the users of electronics consultation using a questionnaire. After a few months, the consultation group showed a considerably higher IIEF-5 score compared with their baseline score. Eighty-one percent replied in the affirmative to the GAQ. E-consultation is likely to be effective when treating ED, especially among men who find the medium convenient and for men who experience much embarrassment.
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Affiliation(s)
- P M Leusink
- Department of Sexology Groene Hart Ziekenhuis, Gouda, The Netherlands.
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