1
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Hernandez CM, McCuiston MA, Davis K, Halls Y, Carcamo Dal Zotto JP, Jackson NL, Dobrunz LE, King PH, McMahon LL. In a circuit necessary for cognition and emotional affect, Alzheimer's-like pathology associates with neuroinflammation, cognitive and motivational deficits in the young adult TgF344-AD rat. Brain Behav Immun Health 2024; 39:100798. [PMID: 39022628 PMCID: PMC11253229 DOI: 10.1016/j.bbih.2024.100798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 05/21/2024] [Indexed: 07/20/2024] Open
Abstract
In addition to extracellular amyloid plaques, intracellular neurofibrillary tau tangles, and inflammation, cognitive and emotional affect perturbations are characteristic of Alzheimer's disease (AD). The cognitive and emotional domains impaired by AD include several forms of decision making (such as intertemporal choice), blunted motivation (increased apathy), and impaired executive function (such as working memory and cognitive flexibility). However, the interaction between these domains of the mind and their supporting neurobiological substrates at prodromal stages of AD, or whether these interactions can be predictive of AD severity (individual variability), remain unclear. In this study, we employed a battery of cognitive and emotional tests in the young adult (5-7 mo) transgenic Fisher-344 AD (TgF344-AD; TgAD) rat model of AD. We also assessed whether markers of inflammation or AD-like pathology in the prelimbic cortex (PrL) of the medial prefrontal cortex (mPFC), basolateral amygdala (BLA), or nucleus accumbens (NAc), all structures that directly support the aforementioned behaviors, were predictive of behavioral deficits. We found TgAD rats displayed maladaptive decision making, greater apathy, and impaired working memory that was indeed predicted by AD-like pathology in the relevant brain structures, even at an early age. Moreover, we report that the BLA is an early epicenter of inflammation, and notably, AD-like pathology in the PrL, BLA, and NAc was predictive of BLA inflammation. These results suggest that operant-based battery testing may be sensitive enough to determine pathology trajectories, including neuroinflammation, from early stages of AD.
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Affiliation(s)
- Caesar M. Hernandez
- Department of Medicine, Division of Gerontology, Geriatrics, and Palliative Care, The University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, USA
| | - Macy A. McCuiston
- Department of Medicine, Division of Gerontology, Geriatrics, and Palliative Care, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Kristian Davis
- Department of Medicine, Division of Gerontology, Geriatrics, and Palliative Care, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Yolanda Halls
- Department of Medicine, Division of Gerontology, Geriatrics, and Palliative Care, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Juan Pablo Carcamo Dal Zotto
- Department of Medicine, Division of Gerontology, Geriatrics, and Palliative Care, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Nateka L. Jackson
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, USA
- Department of Neuroscience, Medical University of South Carolina, USA
| | - Lynn E. Dobrunz
- Department of Neurobiology, The University of Alabama at Birmingham, USA
| | - Peter H. King
- Department of Neurology, The University of Alabama at Birmingham, USA
- Birmingham Veterans Affairs Medical Center, Birmingham, AL, USA
| | - Lori L. McMahon
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, USA
- Department of Neuroscience, Medical University of South Carolina, USA
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2
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Guo Y, Wu H, Li Z, Zhao L, Feng T. Episodic future thinking predicts differences in delay discounting: The mediating role of hippocampal structure. Front Psychol 2022; 13:992245. [PMID: 36312178 PMCID: PMC9596978 DOI: 10.3389/fpsyg.2022.992245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/27/2022] [Indexed: 11/13/2022] Open
Abstract
A growing body of evidence suggests that engagement in episodic future thinking (EFT) could reduce delay discounting rates. However, little is known about whether individual differences in the ability of EFT are associated with differences in delay discounting in young adults. In the present study, this association was tested in healthy college students (n = 106, 19.98 ± 1.56 years), and the neural basis underlying this association was also examined using voxel-based morphometry (VBM) method. Behavioral analysis indicated that individual differences in EFT ability can significantly negatively predict discounting rates. VBM analysis first revealed that the EFT score positively correlated with gray matter volume (GMV) of a cluster in hippocampus, while negatively correlated with GMV of a cluster in rostral anterior cingulate cortex. We also found the GMV of a cluster in the mPFC was positively correlated with delay discounting. ROI analysis further revealed that individual differences in delay discounting could be reliably predicted by the GMV in the hippocampus and mPFC. The final mediation analysis showed that the GMV of the hippocampus plays a significant mediating role in the association between EFT and delay discounting, and the indirect effect of the hippocampal GMV accounts for 33.2% of the total effect. Our results suggest that individuals’ EFT ability may be an important determinant of differences in delay discounting, and highlight the hippocampal structure as a neural biomarker for explaining the association between EFT ability and delay discounting.
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Affiliation(s)
- Yiqun Guo
- School of Innovation and Entrepreneurship Education, Chongqing University of Posts and Telecommunications, Chongqing, China
- School of Bioinformatics, Chongqing University of Posts and Telecommunications, Chongqing, China
- Key Laboratory of Cognition and Personality, Ministry of Education, Chongqing, China
- *Correspondence: Yiqun Guo, ; Tingyong Feng,
| | - Huimin Wu
- Faculty of Psychology, Southwest University, Chongqing, China
| | - Zhangyong Li
- School of Bioinformatics, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Le Zhao
- Faculty of Psychology, Beijing Normal University, Zhuhai, China
| | - Tingyong Feng
- Key Laboratory of Cognition and Personality, Ministry of Education, Chongqing, China
- Faculty of Psychology, Southwest University, Chongqing, China
- *Correspondence: Yiqun Guo, ; Tingyong Feng,
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3
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Sun W, Matsuoka T, Narumoto J. Decision-Making Support for People With Alzheimer's Disease: A Narrative Review. Front Psychol 2021; 12:750803. [PMID: 34867639 PMCID: PMC8633444 DOI: 10.3389/fpsyg.2021.750803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/25/2021] [Indexed: 01/01/2023] Open
Abstract
The proportion of people with dementia has been increasing yearly, and the decision-making capacity of these people has become a major concern in fields such as the financial industry and in medical settings. In this narrative review, we discuss decision-making in people with Alzheimer’s disease (AD), and we propose the support for decision-making in people with AD, especially financial and medical decision-making. We summarize several hypotheses and theories on the decision-making capacity of people with AD. These include the frontal lobe hypothesis, physiological theory, dysfunction of the hypothalamic-pituitary-adrenal (HPA) axis, and the Person-Task-Fit (PTF) framework. Both internal and external factors can affect decision-making by people with AD. Internal factors are affected by changes in the brain and neurotransmitters, as well as alterations in cognitive ability and emotion. External factors include task characters, task contents, and situation influence. Since feedback has a significant effect on decision-making capacity, a series of suggestions may be helpful to improve this capacity, such as explicit advice, simple options, pleasant rewards, the Talking Mats approach, memory and organizational aid, support by caregivers, cognitive training and feedback. Thus, in providing decision-making support for people with AD, it is important to identify the internal and external factors that impair this process and to deal with these factors.
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Affiliation(s)
- Weiyi Sun
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Teruyuki Matsuoka
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Jin Narumoto
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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4
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Liu L, Bulley A, Irish M. Subjective Time in Dementia: A Critical Review. Brain Sci 2021; 11:1502. [PMID: 34827501 PMCID: PMC8616021 DOI: 10.3390/brainsci11111502] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/04/2021] [Accepted: 11/09/2021] [Indexed: 12/31/2022] Open
Abstract
The capacity for subjective time in humans encompasses the perception of time's unfolding from moment to moment, as well as the ability to traverse larger temporal expanses of past- and future-oriented thought via mental time travel. Disruption in time perception can result in maladaptive outcomes-from the innocuous lapse in timing that leads to a burnt piece of toast, to the grievous miscalculation that produces a traffic accident-while disruption to mental time travel can impact core functions from planning appointments to making long-term decisions. Mounting evidence suggests that disturbances to both time perception and mental time travel are prominent in dementia syndromes. Given that such disruptions can have severe consequences for independent functioning in everyday life, here we aim to provide a comprehensive exposition of subjective timing dysfunction in dementia, with a view to informing the management of such disturbances. We consider the neurocognitive mechanisms underpinning changes to both time perception and mental time travel across different dementia disorders. Moreover, we explicate the functional implications of altered subjective timing by reference to two key and representative adaptive capacities: prospective memory and intertemporal decision-making. Overall, our review sheds light on the transdiagnostic implications of subjective timing disturbances in dementia and highlights the high variability in performance across clinical syndromes and functional domains.
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Affiliation(s)
- Lulu Liu
- School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia; (L.L.); (A.B.)
- Brain and Mind Centre, The University of Sydney, Sydney, NSW 2050, Australia
| | - Adam Bulley
- School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia; (L.L.); (A.B.)
- Brain and Mind Centre, The University of Sydney, Sydney, NSW 2050, Australia
- Department of Psychology, Harvard University, Boston, MA 02138, USA
| | - Muireann Irish
- School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia; (L.L.); (A.B.)
- Brain and Mind Centre, The University of Sydney, Sydney, NSW 2050, Australia
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5
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Li X, Chen W, Huang X, Jing W, Zhang T, Yu Q, Yu H, Li H, Tian Q, Ding Y, Lu Y. Synaptic dysfunction of Aldh1a1 neurons in the ventral tegmental area causes impulsive behaviors. Mol Neurodegener 2021; 16:73. [PMID: 34702328 PMCID: PMC8549305 DOI: 10.1186/s13024-021-00494-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 09/27/2021] [Indexed: 12/04/2022] Open
Abstract
Background Aldh1a1 neurons are a subtype of gamma-aminobutyric acid (GABA) inhibitory neurons that use Aldh1a1 rather than glutamate decarboxylase (GAD) as an enzyme for synthesizing GABA transmitters. However, the behaviors and circuits of this newly identified subtype of inhibitory interneurons remain unknown. Methods We generated a mutant mouse line in which cyclization recombination enzyme (CRE) was expressed under the control of the Aldh1a1 promotor (Aldh1a1-CRE mice). Using this mutant strain of mice together with the heterozygous male Alzheimer’s disease (AD) related model mice (APPswe/PSEN1dE9, or AD mice) and a genetically modified retrograde and anterograde synaptic tracing strategy, we have studied a specific synaptic circuit of Aldh1a1 neurons with system-level function and disease progression in AD mice. Results We demonstrate that Aldh1a1 neurons encode delay of gratification that measures self-control skills in decision making by projecting inhibitory synapses directly onto excitatory glutamate neurons in the intermediate lateral septum (EGNIS) and receiving synaptic inputs from layer 5b pyramidal neurons in the medial prefrontal cortex (L5PN). L5PN → Aldh1a1 synaptic transmission undergoes long-term potentiation (LTP). Pathway specific inhibition by either genetic silencing presynaptic terminals or antagonizing postsynaptic receptors impairs delay of gratification, resulting in the impulsive behaviors. Further studies show that reconstitution of Aldh1a1-deficient neurons with the expression of exogenous Aldh1a1 (eAldh1a1) restores Aldh1a1 → EGNIS synaptic transmission and rescues the impulsive behaviors in AD mice. Conclusions These results not only identify a specific function and circuit of Aldh1a1 neurons but also provide a cellular point of entry to an important but understudied synaptic mechanism for the induction of impulsive behaviors at an early stage of AD. Supplementary Information The online version contains supplementary material available at 10.1186/s13024-021-00494-9.
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Affiliation(s)
- Xinyan Li
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China.,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wenting Chen
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xian Huang
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wei Jing
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Tongmei Zhang
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Quntao Yu
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hongyan Yu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China.,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hao Li
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Qing Tian
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yumei Ding
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China. .,Department of Stomatology, School of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Youming Lu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China. .,Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China. .,Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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6
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Young NA, Minton AR, Mikels JA. The Appraisal Approach to Aging and Emotion: An Integrative Theoretical Framework. DEVELOPMENTAL REVIEW 2021; 59:100947. [PMID: 33737760 PMCID: PMC7963263 DOI: 10.1016/j.dr.2021.100947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
To advance our understanding of how emotional experience changes across the adult life span, we propose an integrative theoretical framework: the appraisal approach to aging and emotion (AAAE). AAAE posits that (a) age-related cognitive, motivational, and physical changes fundamentally change the appraisal system in certain ways, and that (b) older adults often deploy appraisal processes in different ways relative to their younger counterparts. As such, we hypothesize that these age-related changes to the appraisal process underlie the finding that older and younger adults tend to experience different emotions. In this paper we integrate findings from the aging literature with appraisal theory, grounding AAAE in theoretical and empirical work relevant to the relationship between aging and appraisal processes. Using our theoretical framework, it is possible to identify critical points of investigation for aging and emotion researchers to further develop our understanding of the proximal-level determinants of age differences in emotion.
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7
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Dhingra I, Zhang S, Zhornitsky S, Le TM, Wang W, Chao HH, Levy I, Li CSR. The effects of age on reward magnitude processing in the monetary incentive delay task. Neuroimage 2020; 207:116368. [PMID: 31743790 PMCID: PMC7463276 DOI: 10.1016/j.neuroimage.2019.116368] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 11/11/2019] [Accepted: 11/15/2019] [Indexed: 12/28/2022] Open
Abstract
Previous studies have suggested age-related differences in reward-directed behavior and cerebral processes in support of the age effects. However, it remains unclear how age may influence the processing of reward magnitude. Here, with 54 volunteers (22-74 years of age) participating in the Monetary Incentive Delay Task (MIDT) with explicit cues ($1, ¢1, or nil) and timed response to win, we characterized brain activations during anticipation and feedback and the effects of age on these regional activations. Behaviorally, age was associated with less reaction time (RT) difference between dollar and cent trials, as a result of slower response to the dollar trials; i.e., age was positively correlated with RT dollar - RT cent, with RT nil as a covariate. Both age and the RT difference ($1 - ¢1) were correlated with diminished activation of the right caudate head, right anterior insula, supplementary motor area (SMA)/pre-SMA, visual cortex, parahippocampal gyrus, right superior/middle frontal gyri, and left primary motor cortex during anticipation of $1 vs. ¢1 reward. Further, these regional activities mediated the age effects on RT differences. In responses to outcomes, age was associated with decreases in regional activations to dollar vs. cent loss but only because of higher age-related responses to cent losses. Together, these findings suggest age-related differences in sensitivity to the magnitude of reward. With lower cerebral responses during anticipation to win large rewards and higher responses to outcomes of small loss, aging incurs a constricted sensitivity to the magnitude of reward.
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Affiliation(s)
- Isha Dhingra
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Sheng Zhang
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Simon Zhornitsky
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Thang M Le
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Wuyi Wang
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Herta H Chao
- Department of Medicine, Yale University School of Medicine, New Haven, CT, USA; VA Connecticut Healthcare System, West Haven, CT, USA
| | - Ifat Levy
- Department of Comparative Medicine, Yale University School of Medicine, New Haven, CT, USA; Department of Neuroscience, Yale University School of Medicine, New Haven, CT, USA; Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA
| | - Chiang-Shan R Li
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA; Department of Neuroscience, Yale University School of Medicine, New Haven, CT, USA; Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA.
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8
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Levens SM, Sagui-Henson SJ, Padro M, Martin LE, Trucco EM, Cooperman NA, Baldwin AS, Kassianos AP, Mdege ND. The Effects of Positive Affect and Episodic Future Thinking on Temporal Discounting and Healthy Food Demand and Choice Among Overweight and Obese Individuals: Protocol for a Pilot 2×2 Factorial Randomized Controlled Study. JMIR Res Protoc 2019; 8:e12265. [PMID: 30892273 PMCID: PMC6446151 DOI: 10.2196/12265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/16/2018] [Accepted: 12/10/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Unhealthy behaviors (eg, poor food choices) contribute to obesity and numerous negative health outcomes, including multiple types of cancer and cardiovascular and metabolic diseases. To promote healthy food choice, diet interventions should build on the dual-system model to target the regulation and reward mechanisms that guide eating behavior. Episodic future thinking (EFT) has been shown to strengthen regulation mechanisms by reducing unhealthy food choice and temporal discounting (TD), a process of placing greater value on smaller immediate rewards over larger future rewards. However, these interventions do not target the reward mechanisms that could support healthy eating and strengthen the impact of EFT-anchored programs. Increasing positive affect (PosA) related to healthy food choices may target reward mechanisms by enhancing the rewarding effects of healthy eating. An intervention that increases self-regulation regarding unhealthy foods and the reward value of healthy foods will likely have a greater impact on eating behavior compared with interventions focused on either process alone. OBJECTIVE This study aimed to introduce a protocol that tests the independent and interactive effects of EFT and PosA on TD, food choice, and food demand in overweight and obese adults. METHODS This protocol describes a factorial, randomized, controlled pilot study that employs a 2 (affective imagery: positive, neutral) by 2 (EFT: yes, no) design in which participants are randomized to 1 of 4 guided imagery intervention arms. In total, 156 eligible participants will complete 2 lab visits separated by 5 days. At visit 1, participants complete surveys; listen to the audio guided imagery intervention; and complete TD, food demand, and food choice tasks. At visit 2, participants complete TD, food demand, and food choice tasks and surveys. Participants complete a daily food frequency questionnaire between visits 1 and 2. Analyses will compare primary outcome measures at baseline, postintervention, and at follow-up across treatment arms. RESULTS Funding notification was received on April 27, 2017, and the protocol was approved by the institutional review board on October 6, 2017. Feasibility testing of the protocol was conducted from February 21, 2018, to April 18, 2018, among the first 32 participants. As no major protocol changes were required at the end of the feasibility phase, these 32 participants were included in the target sample of 156 participants. Recruitment, therefore, continued immediately after the feasibility phase. When this manuscript was submitted, 84 participants had completed the protocol. CONCLUSIONS Our research goal is to develop novel, theory-based interventions to promote and improve healthy decision-making and behaviors. The findings will advance decision-making research and have the potential to generate new neuroscience and psychological research to further understand these mechanisms and their interactions. TRIAL REGISTRATION ISRCTN Registry ISRCTN11704675; http://www.isrctn.com/ISRCTN11704675 (Archived by WebCite at http://www.webcitation.org/760ouOoKG). INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/12265.
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Affiliation(s)
- Sara M Levens
- University of North Carolina at Charlotte, Department of Psychological Science, Charlotte, NC, United States
| | - Sara J Sagui-Henson
- Osher Center for Integrative Medicine, University of California, San Francisco, San Fransisco, CA, United States
| | - Meagan Padro
- Department of Psychological Science, University of North Carolina at Charlotte, Charlotte, NC, United States
| | - Laura E Martin
- Hoglund Brain Imaging Center, University of Kansas Medical Center, Kansas City, KS, United States
| | - Elisa M Trucco
- Department of Psychology, Florida International University, Miami, FL, United States
| | - Nina A Cooperman
- Department of Psychiatry, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ, United States
| | - Austin S Baldwin
- Department of Psychology, Southern Methodist University, Dallas, TX, United States
| | - Angelos P Kassianos
- Department of Applied Health Research, University College London, London, United Kingdom
| | - Noreen D Mdege
- University of York, Department of Health Sciences, York, United Kingdom
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9
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Thoma MV, Forstmeier S, Schmid R, Kellner O, Xepapadakos F, Gasser US, Blessing A, Ropohl A, Bieri-Brüning G, Debeer D, Maercker A. Preliminary evidence for an increased likelihood of a stable trajectory in mild cognitive impairment in individuals with higher motivational abilities. BMC Geriatr 2018; 18:181. [PMID: 30103681 PMCID: PMC6090725 DOI: 10.1186/s12877-018-0865-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 07/25/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Motivational abilities (MA), that describe skills in relation to goal-oriented behavior, have recently been found to be associated with neuropathological aging. Here we examine the impact of MA on the long-term course of mild cognitive impairment (MCI). METHODS We followed-up N = 64 individuals diagnosed with MCI (Mage = 73 years, 44% female) for 3 years. MA were assessed by long-term informants of the participants using two scales: motivation and decision regulation [Volitional Components Questionnaires, VCQ, (Kuhl and Fuhrmann, Decomposing self-regulation and self-control: the volitional components inventory, 1998)]. Cognitive abilities were assessed with the Mini Mental State Examination (J Psychiatr Res 12:189-98, 1975). Survival analyses and multilevel modeling (MLM) were applied to determine the predicting effect of informant-rated MA at baseline on the likelihood of MCI stability and on the trajectory of cognitive abilities. RESULTS Fifty percent (n = 32) of the MCI participants remained stable, while 32.8% (n = 21) and 17.2% (n = 11) converted to Alzheimer's disease (AD) or dropped-out, respectively. Survival analyses revealed that MCI cases with higher-rated MA at baseline were more likely to exert a stable course in MCI over 3 years (p = 0.036) when controlling for demographic characteristics and executive function. MLM analyses indicated that higher informant-rated MA at baseline were significantly related to higher cognitive abilities, even when controlling for MCI subtype (p = 0.030). CONCLUSIONS This study provides preliminary longitudinal evidence for a lower risk of conversion to AD and higher cognitive abilities by higher rated MA at an early stage of MCI.
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Affiliation(s)
- Myriam V. Thoma
- University of Zurich, Binzmuehlestr, 14, 8050 Zurich, Switzerland
- University Research Priority Program “Dynamics of Healthy Aging”, University of Zurich, Zurich, Switzerland
- Psychopathology and Clinical Intervention, University of Zurich, Binzmuehlestr. 14/17, CH-8050 Zurich, Switzerland
| | - Simon Forstmeier
- University of Zurich, Binzmuehlestr, 14, 8050 Zurich, Switzerland
- University of Siegen, Faculty II, Developmental Psychology, Adolf-Reichwein-Str. 2, 57068 Siegen, Germany
| | - Roger Schmid
- Psychiatrische Klinik Zugersee, Zug, Switzerland
| | - Oliver Kellner
- Integrierte Psychiatrie Winterthur, Winterthur, Switzerland
- Present Address: Alterspsychiatrische Praxis, Buehlach, Switzerland
| | | | | | | | - Axel Ropohl
- Sanatorium Kilchberg AG, Kilchberg, Switzerland
- Present Address: KMG – Kompetenz mentale Gesundheit GmbH, Baar, Switzerland
| | | | - Dries Debeer
- University of Zurich, Binzmuehlestr, 14, 8050 Zurich, Switzerland
| | - Andreas Maercker
- University of Zurich, Binzmuehlestr, 14, 8050 Zurich, Switzerland
- University Research Priority Program “Dynamics of Healthy Aging”, University of Zurich, Zurich, Switzerland
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10
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Coelho S, Guerreiro M, Chester C, Silva D, Maroco J, Paglieri F, de Mendonça A. Delay discounting in mild cognitive impairment. J Clin Exp Neuropsychol 2016; 39:336-346. [DOI: 10.1080/13803395.2016.1226269] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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