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Kommula Y, Purcell JJ, Callow DD, Won J, Pena GS, Smith JC. Emotional processing and positive affect after acute exercise in healthy older adults. Psychophysiology 2023; 60:e14357. [PMID: 37306291 DOI: 10.1111/psyp.14357] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 06/13/2023]
Abstract
The well-elucidated improvement of mood immediately after exercise in older adults presumably involves adaptations in emotion-processing brain networks. However, little is known about effects of acute exercise on appetitive and aversive emotion-related network recruitment in older adults. The purpose of this study was to determine the effect of acute exercise, compared to a seated rest control condition, on pleasant and unpleasant emotion-related regional activation in healthy older adults. Functional MRI data were acquired from 32 active older adults during blocked presentations of pleasant, neutral and unpleasant images from the International Affective Pictures System. fMRI data were collected after participants completed 30 min of moderate to vigorous intensity cycling or seated rest, performed in a counterbalanced order across separate days in a within-subject design. The findings suggest three ways that emotional processing in the brain may be different immediately after exercise (relative to immediately after rest): First, reduced demands on emotional regulation during pleasant emotional processing as indicated by lower precuneus activation for pleasant stimuli; second, reduced processing of negative emotional stimuli in visual association areas as indicated by lower activation for unpleasant stimuli in the bilateral fusiform and ITG; third, an increased recruitment in activation associated with regulating/inhibiting unpleasant emotional processing in the bilateral medial superior frontal gyrus (dorsomedial prefrontal cortex), angular gyri, supramarginal gyri, left cerebellar crus I/II and a portion of right dorsolateral prefrontal cortex. Overall, these findings support that acute exercise in active older adults alters activation in key emotional processing and regulating brain regions.
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Affiliation(s)
- Yash Kommula
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, Maryland, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, Maryland, USA
| | - Jeremy J Purcell
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, Maryland, USA
- Maryland Neuroimaging Center, University of Maryland, College Park, Maryland, USA
| | - Daniel D Callow
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, Maryland, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, Maryland, USA
| | - Junyeon Won
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, Dallas, Texas, USA
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Gabriel S Pena
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - J Carson Smith
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, Maryland, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, Maryland, USA
- Maryland Neuroimaging Center, University of Maryland, College Park, Maryland, USA
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Abstract
OBJECTIVES Ample evidence suggests exercise is beneficial for hippocampal function. Furthermore, a single session of aerobic exercise provides immediate benefits to mnemonic discrimination performance, a highly hippocampal-specific memory process, in healthy younger adults. However, it is unknown if a single session of aerobic exercise alters mnemonic discrimination in older adults, who generally exhibit greater hippocampal deterioration and deficits in mnemonic discrimination performance. METHODS We conducted a within subject acute exercise study in 30 cognitively healthy and physically active older adults who underwent baseline testing and then completed two experimental visits in which they performed a mnemonic discrimination task before and after either 30 min of cycling exercise or 30 min of seated rest. Linear mixed-effects analyses were conducted in which condition order and age were controlled, time (pre vs. post) and condition (exercise vs. rest) were modeled as fixed effects, and subject as a random effect. RESULTS No significant time by condition interaction effect was found for object recognition (p = .254, η2=.01), while a significant reduction in interference was found for mnemonic discrimination performance following the exercise condition (p = .012, η2=.07). A post-intervention only analysis indicated that there was no difference between condition for object recognition (p = .186, η2=.06), but that participants had better mnemonic discrimination performance (p < .001, η2=.22) following the exercise. CONCLUSIONS Our results suggest a single session of moderate-intensity aerobic exercise may reduce interference and elicit better mnemonic discrimination performance in healthy older adults, suggesting benefits for hippocampal-specific memory function.
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Affiliation(s)
- Daniel D. Callow
- Department of Kinesiology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - Gabriel S. Pena
- Department of Kinesiology, University of Maryland, College Park, MD, USA
| | - Craig E. L. Stark
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - J. Carson Smith
- Department of Kinesiology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
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Fico BG, Maharaj A, Pena GS, Huang CJ. The Effects of Obesity on the Inflammatory, Cardiovascular, and Neurobiological Responses to Exercise in Older Adults. Biology (Basel) 2023; 12:865. [PMID: 37372149 DOI: 10.3390/biology12060865] [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] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/30/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023]
Abstract
Obesity with advancing age leads to increased health complications that are involved in various complex physiological processes. For example, inflammation is a critical cardiovascular disease risk factor that plays a role in the stages of atherosclerosis in both aging and obesity. Obesity can also induce profound changes to the neural circuitry that regulates food intake and energy homeostasis with advancing age. Here we discuss how obesity in older adults impacts inflammatory, cardiovascular, and neurobiological functions with an emphasis on how exercise mediates each topic. Although obesity is a reversible disorder through lifestyle changes, it is important to note that early interventions are crucial to prevent pathological changes seen in the aging obese population. Lifestyle modifications such as physical activity (including aerobic and resistance training) should be considered as a main intervention to minimize the synergistic effect of obesity on age-related conditions, such as cerebrovascular disease.
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Affiliation(s)
- Brandon G Fico
- Department of Kinesiology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Arun Maharaj
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Gabriel S Pena
- Department of Kinesiology, University of Maryland, College Park, MD 20742, USA
| | - Chun-Jung Huang
- Exercise Biochemistry Laboratory, Department of Exercise Science and Health Promotion, Florida Atlantic University, Boca Raton, FL 33431, USA
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Weiner CM, Mascone SE, Eagan LE, Blake EF, Callow DD, Pena GS, Won J, Kommula Y, Arnold NA, Smith JC, Ranadive SM. Carotid Artery Stiffness Decreases In Older Women Following 6-month Aerobic Exercise Intervention. Med Sci Sports Exerc 2022. [DOI: 10.1249/01.mss.0000875376.71270.b6] [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: 11/21/2022]
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Pena GS, Evans WS, Callow DD, Prior SJ, Smith JC. Monocyte Polarization As A Biomarker Of Cardiorespiratory And Cognitive Health In Active Older Adults: A Pilot Study. Med Sci Sports Exerc 2022. [DOI: 10.1249/01.mss.0000875948.11779.c6] [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: 11/21/2022]
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Jordan LS, Woodard JL, Pena GS, Arnold-Nedimala NA, Won J, Callow DD, Smith JC. Forward-focused coping predicts better mental health outcomes in mid- to late-life during the COVID-19 pandemic. Aging Ment Health 2022; 26:554-562. [PMID: 33733957 DOI: 10.1080/13607863.2021.1897523] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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] [Indexed: 10/21/2022]
Abstract
Objectives: Psychosocial stressors associated with the COVID-19 pandemic may increase the risk of depression and anxiety in the general population. Individuals approaching or within older adulthood may be especially vulnerable to these psychosocial stressors and their impact on mental health outcomes. Consequently, there is an urgent need to identify protective factors for older adults. The purpose of the present study was to determine the relative contribution of coping flexibility (CF) and two distinct coping strategies, forward-focused and trauma-focused, on negative affect in persons 50 years of age and older during the COVID-19 pandemic. Method: Data were collected using an online survey, including questions about demographic information, coping, depression, and anxiety. Participants aged 50 and over were included in our analyses of depression (N = 800) and anxiety (N = 638). Results: Both higher CF and higher forward-focused coping predicted lower depression and lower anxiety. In contrast, higher trauma-focused coping predicted slightly higher depressive symptoms but was not a significant predictor of anxiety. Conclusion: Our findings suggest that higher forward-focused coping may serve as a protective factor in older adults during the pandemic and, therefore, may be an effective treatment target for mental health interventions.
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Affiliation(s)
- Leslie S Jordan
- Department of Kinesiology, University of Maryland, College Park, MD, USA.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - John L Woodard
- Department of Psychology, Wayne State University, Detroit, MI, USA
| | - Gabriel S Pena
- Department of Kinesiology, University of Maryland, College Park, MD, USA
| | | | - Junyeon Won
- Department of Kinesiology, University of Maryland, College Park, MD, USA
| | - Daniel D Callow
- Department of Kinesiology, University of Maryland, College Park, MD, USA.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - J Carson Smith
- Department of Kinesiology, University of Maryland, College Park, MD, USA.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
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Won J, Callow DD, Pena GS, Gogniat MA, Kommula Y, Arnold-Nedimala NA, Jordan LS, Smith JC. Evidence for exercise-related plasticity in functional and structural neural network connectivity. Neurosci Biobehav Rev 2021; 131:923-940. [PMID: 34655658 PMCID: PMC8642315 DOI: 10.1016/j.neubiorev.2021.10.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [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: 04/13/2021] [Revised: 08/10/2021] [Accepted: 10/10/2021] [Indexed: 02/07/2023]
Abstract
The number of studies investigating exercise and cardiorespiratory fitness (CRF)-related changes in the functional and structural organization of brain networks continues to rise. Functional and structural connectivity are critical biomarkers for brain health and many exercise-related benefits on the brain are better represented by network dynamics. Here, we reviewed the neuroimaging literature to better understand how exercise or CRF may facilitate and maintain the efficiency and integrity of functional and structural aspects of brain networks in both younger and older adults. Converging evidence suggests that increased exercise performance and CRF modulate functional connectivity of the brain in a way that corresponds to behavioral changes such as cognitive and motor performance improvements. Similarly, greater physical activity levels and CRF are associated with better cognitive and motor function, which may be brought about by enhanced structural network integrity. This review will provide a comprehensive understanding of trends in exercise-network studies as well as future directions based on the gaps in knowledge that are currently present in the literature.
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Affiliation(s)
- Junyeon Won
- Department of Kinesiology, University of Maryland, College Park, MD, United States
| | - Daniel D Callow
- Department of Kinesiology, University of Maryland, College Park, MD, United States; Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States
| | - Gabriel S Pena
- Department of Kinesiology, University of Maryland, College Park, MD, United States
| | - Marissa A Gogniat
- Department of Psychology, University of Georgia, Athens, GA, United States
| | - Yash Kommula
- Department of Kinesiology, University of Maryland, College Park, MD, United States; Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States
| | | | - Leslie S Jordan
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States
| | - J Carson Smith
- Department of Kinesiology, University of Maryland, College Park, MD, United States; Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States.
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Won J, Callow DD, Pena GS, Jordan LS, Arnold-Nedimala NA, Nielson KA, Smith JC. Hippocampal Functional Connectivity and Memory Performance After Exercise Intervention in Older Adults with Mild Cognitive Impairment. J Alzheimers Dis 2021; 82:1015-1031. [PMID: 34151792 PMCID: PMC8461699 DOI: 10.3233/jad-210051] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Background: Exercise training (ET) has neuroprotective effects in the hippocampus, a key brain region for memory that is vulnerable to age-related dysfunction. Objective: We investigated the effects of ET on functional connectivity (FC) of the hippocampus in older adults with mild cognitive impairment (MCI) and a cognitively normal (CN) control group. We also assessed whether the ET-induced changes in hippocampal FC (Δhippocampal-FC) are associated with changes in memory task performance (Δmemory performance). Methods: 32 older adults (77.0±7.6 years; 16 MCI and 16 CN) participated in the present study. Cardiorespiratory fitness tests, memory tasks (Rey Auditory Verbal Learning Test (RAVLT) and Logical Memory Test (LM)), and resting-state fMRI were administered before and after a 12-week walking ET intervention. We utilized a seed-based correlation analysis using the bilateral anterior and posterior hippocampi as priori seed regions of interest. The associations of residualized ET-induced Δhippocampal-FC and Δmemory performance were assessed using linear regression. Results: There were significant improvements in RAVLT Trial 1 and LM test performance after ET across participants. At baseline, MCI, compared to CN, demonstrated significantly lower posterior hippocampal FC. ET was associated with increased hippocampal FC across groups. Greater ET-related anterior and posterior hippocampal FC with right posterior cingulate were associated with improved LM recognition performance in MCI participants. Conclusion: Our findings indicate that hippocampal FC is significantly increased following 12-weeks of ET in older adults and, moreover, suggest that increased hippocampal FC may reflect neural network plasticity associated with ET-related improvements in memory performance in individuals diagnosed with MCI.
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Affiliation(s)
- Junyeon Won
- Department of Kinesiology, University of Maryland, College Park, MD, USA
| | - Daniel D Callow
- Department of Kinesiology, University of Maryland, College Park, MD, USA.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - Gabriel S Pena
- Department of Kinesiology, University of Maryland, College Park, MD, USA
| | - Leslie S Jordan
- Department of Kinesiology, University of Maryland, College Park, MD, USA.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | | | - Kristy A Nielson
- Department of Psychology, Marquette University, Milwaukee, WI, USA.,Department of Neuropsychology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - J Carson Smith
- Department of Kinesiology, University of Maryland, College Park, MD, USA.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
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Callow DD, Won J, Pena GS, Jordan LS, Arnold-Nedimala NA, Kommula Y, Nielson KA, Smith JC. Exercise Training-Related Changes in Cortical Gray Matter Diffusivity and Cognitive Function in Mild Cognitive Impairment and Healthy Older Adults. Front Aging Neurosci 2021; 13:645258. [PMID: 33897407 PMCID: PMC8060483 DOI: 10.3389/fnagi.2021.645258] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Individuals with Mild Cognitive Impairment (MCI) are at an elevated risk of dementia and exhibit deficits in cognition and cortical gray matter (GM) volume, thickness, and microstructure. Meanwhile, exercise training appears to preserve brain function and macrostructure may help delay or prevent the onset of dementia in individuals with MCI. Yet, our understanding of the neurophysiological effects of exercise training in individuals with MCI remains limited. Recent work suggests that the measures of gray matter microstructure using diffusion imaging may be sensitive to early cognitive and neurophysiological changes in the aging brain. Therefore, this study is aimed to determine the effects of exercise training in cognition and cortical gray matter microstructure in individuals with MCI vs. cognitively healthy older adults. Fifteen MCI participants and 17 cognitively intact controls (HC) volunteered for a 12-week supervised walking intervention. Following the intervention, MCI and HC saw improvements in cardiorespiratory fitness, performance on Trial 1 of the Rey Auditory Verbal Learning Test (RAVLT), a measure of verbal memory, and the Controlled Oral Word Association Test (COWAT), a measure of verbal fluency. After controlling for age, a voxel-wise analysis of cortical gray matter diffusivity showed individuals with MCI exhibited greater increases in mean diffusivity (MD) in the left insular cortex than HC. This increase in MD was positively associated with improvements in COWAT performance. Additionally, after controlling for age, the voxel-wise analysis indicated a main effect of Time with both groups experiencing an increase in left insular and left and right cerebellar MD. Increases in left insular diffusivity were similarly found to be positively associated with improvements in COWAT performance in both groups, while increases in cerebellar MD were related to gains in episodic memory performance. These findings suggest that exercise training may be related to improvements in neural circuits that govern verbal fluency performance in older adults through the microstructural remodeling of cortical gray matter. Furthermore, changes in left insular cortex microstructure may be particularly relevant to improvements in verbal fluency among individuals diagnosed with MCI.
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Affiliation(s)
- Daniel D Callow
- Department of Kinesiology, University of Maryland, College Park, MD, United States.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States
| | - Junyeon Won
- Department of Kinesiology, University of Maryland, College Park, MD, United States
| | - Gabriel S Pena
- Department of Kinesiology, University of Maryland, College Park, MD, United States
| | - Leslie S Jordan
- Department of Kinesiology, University of Maryland, College Park, MD, United States.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States
| | | | - Yash Kommula
- Department of Kinesiology, University of Maryland, College Park, MD, United States.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States
| | - Kristy A Nielson
- Department of Psychology, Marquette University, Milwaukee, WI, United States.,Department of Neurology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - J Carson Smith
- Department of Kinesiology, University of Maryland, College Park, MD, United States.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, United States
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Callow DD, Arnold-Nedimala NA, Jordan LS, Pena GS, Won J, Woodard JL, Smith JC. The Mental Health Benefits of Physical Activity in Older Adults Survive the COVID-19 Pandemic. Am J Geriatr Psychiatry 2020; 28:1046-1057. [PMID: 32713754 PMCID: PMC7831892 DOI: 10.1016/j.jagp.2020.06.024] [Citation(s) in RCA: 156] [Impact Index Per Article: 39.0] [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: 05/14/2020] [Revised: 06/11/2020] [Accepted: 06/24/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To determine the relationship between the amount and intensity of physical activity performed by older adults in North America (United States and Canada) and their depression and anxiety symptoms while currently under social distancing guidelines (SDG) for the COVID-19 pandemic. DESIGN Descriptive cross-sectional study. SETTING Online survey conducted between April 9 and April 30, 2020, during the COVD-19 pandemic. PARTICIPANTS About 1,046 older adults over the age of 50 who live in North America. MEASUREMENTS Participants were asked about their basic demographic information, current health status, and the impact of the current SDG on their subjective state of mental health. Participants completed the Physical Activity Scale for the Elderly, to determine the amount and intensity of physical activity performed, as well as both the Geriatric Depression Scale and Geriatric Anxiety Scale, to ascertain the extent of their depression and anxiety-like symptoms. RESULTS Ninety-seven percent of participants indicated that they adhered to current SDG "Most of the time" or "Strictly." Participants who performed greater levels of physical activity experienced lower levels of depression-like symptoms when age, sex, and education were accounted for; however, no relationship between physical activity and anxiety-like symptoms was found. A hierarchical regression analysis that incorporated the intensity of physical activity performed (light, moderate, and vigorous) in the model indicated that greater light and strenuous activity, but not moderate, predicted lower depression-like symptoms. CONCLUSIONS These results suggest that performing even light physical activity during the COVID-19 pandemic may help alleviate some of the negative mental health impacts that older adults may be experiencing while isolated and adhering to SDG during the COVID-19 pandemic.
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Affiliation(s)
- Daniel D Callow
- Department of Kinesiology, University of Maryland (DDC, NAA-N, LSJ, GSP, JW, JCS), College Park, MD; Program in Neuroscience and Cognitive Science, University of Maryland (DDC, LSJ, JCS), College Park, MD
| | - Naomi A Arnold-Nedimala
- Department of Kinesiology, University of Maryland (DDC, NAA-N, LSJ, GSP, JW, JCS), College Park, MD
| | - Leslie S Jordan
- Department of Kinesiology, University of Maryland (DDC, NAA-N, LSJ, GSP, JW, JCS), College Park, MD; Program in Neuroscience and Cognitive Science, University of Maryland (DDC, LSJ, JCS), College Park, MD
| | - Gabriel S Pena
- Department of Kinesiology, University of Maryland (DDC, NAA-N, LSJ, GSP, JW, JCS), College Park, MD
| | - Junyeon Won
- Department of Kinesiology, University of Maryland (DDC, NAA-N, LSJ, GSP, JW, JCS), College Park, MD
| | - John L Woodard
- Department of Psychology, Wayne State University (JLW), Detroit, MI
| | - J Carson Smith
- Department of Kinesiology, University of Maryland (DDC, NAA-N, LSJ, GSP, JW, JCS), College Park, MD; Program in Neuroscience and Cognitive Science, University of Maryland (DDC, LSJ, JCS), College Park, MD.
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Castro AJ, Pena GS, Paez HG, Halle JL, Visavadiya NP, Zourdos MC, Whitehurst MA, Khamoui AV. Mitochondrial Ant2 And Ucp2 Expression In Mouse Liver During Colon-26 Tumor-induced Cachexia. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000562014.31792.bb] [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: 11/21/2022]
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Halle JL, Pena GS, Paez HG, Castro AJ, Rossiter HB, Visavadiya NP, Whitehurst MA, Khamoui AV. Tissue-specific dysregulation of mitochondrial respiratory capacity and coupling control in colon-26 tumor-induced cachexia. Am J Physiol Regul Integr Comp Physiol 2019; 317:R68-R82. [PMID: 31017805 DOI: 10.1152/ajpregu.00028.2019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In addition to skeletal muscle dysfunction, cancer cachexia is a systemic disease involving remodeling of nonmuscle organs such as adipose and liver. Impairment of mitochondrial function is associated with multiple chronic diseases. The tissue-specific control of mitochondrial function in cancer cachexia is not well defined. This study determined mitochondrial respiratory capacity and coupling control of skeletal muscle, white adipose tissue (WAT), and liver in colon-26 (C26) tumor-induced cachexia. Tissues were collected from PBS-injected weight-stable mice, C26 weight-stable mice and C26 mice with moderate (10% weight loss) and severe cachexia (20% weight loss). The respiratory control ratio [(RCR) an index of oxidative phosphorylation (OXPHOS) coupling efficiency] was low in WAT during the induction of cachexia because of high nonphosphorylating LEAK respiration. Liver RCR was low in C26 weight-stable and moderately cachexic mice because of reduced OXPHOS. Liver RCR was further reduced with severe cachexia, where Ant2 but not Ucp2 expression was increased. Ant2 was inversely correlated with RCR in the liver (r = -0.547, P < 0.01). Liver cardiolipin increased in moderate and severe cachexia, suggesting this early event may also contribute to mitochondrial uncoupling. Impaired skeletal muscle mitochondrial respiration occurred predominantly in severe cachexia, at complex I. These findings suggest that mitochondrial function is subject to tissue-specific control during cancer cachexia, whereby remodeling in WAT and liver arise early and may contribute to altered energy balance, followed by impaired skeletal muscle respiration. We highlight an under-recognized role of liver and WAT mitochondrial function in cancer cachexia and suggest mitochondrial function of multiple tissues to be therapeutic targets.
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Affiliation(s)
- Jessica L Halle
- Department of Exercise Science and Health Promotion, Florida Atlantic University , Boca Raton, Florida
| | - Gabriel S Pena
- Department of Exercise Science and Health Promotion, Florida Atlantic University , Boca Raton, Florida
| | - Hector G Paez
- Department of Exercise Science and Health Promotion, Florida Atlantic University , Boca Raton, Florida
| | - Adrianna J Castro
- Department of Exercise Science and Health Promotion, Florida Atlantic University , Boca Raton, Florida
| | - Harry B Rossiter
- Division of Respiratory and Critical Care Physiology and Medicine, Department of Medicine, Los Angeles Biomedical Research Institute at Harbor-University of California Los Angeles Medical Center , Torrance, California.,Faculty of Biological Sciences, University of Leeds , Leeds , United Kingdom
| | - Nishant P Visavadiya
- Department of Exercise Science and Health Promotion, Florida Atlantic University , Boca Raton, Florida
| | - Michael A Whitehurst
- Department of Exercise Science and Health Promotion, Florida Atlantic University , Boca Raton, Florida
| | - Andy V Khamoui
- Department of Exercise Science and Health Promotion, Florida Atlantic University , Boca Raton, Florida
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Pena GS, Halle JL, Carzoli JP, Paez HG, Zourdos MC, Whitehurst M, Khamoui AV. Time-Dependent Alterations in Liver and Adipose Mitochondrial Respiration During Colon-26 Cancer Cachexia. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535786.87585.58] [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: 11/21/2022]
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Halle JL, Pena GS, Paez HG, Carzoli JP, Zourdos MC, Whitehurst M, Khamoui AV. Mitochondrial Respiratory Capacity and Coupling Control of Skeletal Muscle in Colon-26 Tumor-Induced Cachexia. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535732.23084.f4] [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: 11/21/2022]
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