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Zhuang Q, Qiao L, Xu L, Yao S, Chen S, Zheng X, Li J, Fu M, Li K, Vatansever D, Ferraro S, Kendrick KM, Becker B. The right inferior frontal gyrus as pivotal node and effective regulator of the basal ganglia-thalamocortical response inhibition circuit. PSYCHORADIOLOGY 2023; 3:kkad016. [PMID: 38666118 PMCID: PMC10917375 DOI: 10.1093/psyrad/kkad016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/13/2023] [Accepted: 09/12/2023] [Indexed: 04/28/2024]
Abstract
Background The involvement of specific basal ganglia-thalamocortical circuits in response inhibition has been extensively mapped in animal models. However, the pivotal nodes and directed causal regulation within this inhibitory circuit in humans remains controversial. Objective The main aim of the present study was to determine the causal information flow and critical nodes in the basal ganglia-thalamocortical inhibitory circuits and also to examine whether these are modulated by biological factors (i.e. sex) and behavioral performance. Methods Here, we capitalize on the recent progress in robust and biologically plausible directed causal modeling (DCM-PEB) and a large response inhibition dataset (n = 250) acquired with concomitant functional magnetic resonance imaging to determine key nodes, their causal regulation and modulation via biological variables (sex) and inhibitory performance in the inhibitory circuit encompassing the right inferior frontal gyrus (rIFG), caudate nucleus (rCau), globus pallidum (rGP), and thalamus (rThal). Results The entire neural circuit exhibited high intrinsic connectivity and response inhibition critically increased causal projections from the rIFG to both rCau and rThal. Direct comparison further demonstrated that response inhibition induced an increasing rIFG inflow and increased the causal regulation of this region over the rCau and rThal. In addition, sex and performance influenced the functional architecture of the regulatory circuits such that women displayed increased rThal self-inhibition and decreased rThal to GP modulation, while better inhibitory performance was associated with stronger rThal to rIFG communication. Furthermore, control analyses did not reveal a similar key communication in a left lateralized model. Conclusions Together, these findings indicate a pivotal role of the rIFG as input and causal regulator of subcortical response inhibition nodes.
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Affiliation(s)
- Qian Zhuang
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
- Center for Cognition and Brain Disorders, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province 311121, China
| | - Lei Qiao
- School of Psychology, Shenzhen University, Shenzhen 518060, China
| | - Lei Xu
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
- Institute of Brain and Psychological Sciences, Sichuan Normal University, Chengdu, 610068, China
| | - Shuxia Yao
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
| | - Shuaiyu Chen
- Center for Cognition and Brain Disorders, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province 311121, China
| | - Xiaoxiao Zheng
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
- Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Jialin Li
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
| | - Meina Fu
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
| | - Keshuang Li
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
- School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
| | - Deniz Vatansever
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai 200433, China
| | - Stefania Ferraro
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
| | - Keith M Kendrick
- The Center of Psychosomatic Medicine, Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, The University of Electronic Science and Technology of China, Chengdu, Sichuan Province 611731, China
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai 200433, China
| | - Benjamin Becker
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong 999077, China
- Department of Psychology, The University of Hong Kong, Hong Kong 999077, China
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Patelaki E, Foxe JJ, Mantel EP, Kassis G, Freedman EG. Paradoxical improvement of cognitive control in older adults under dual-task walking conditions is associated with more flexible reallocation of neural resources: A Mobile Brain-Body Imaging (MoBI) study. Neuroimage 2023; 273:120098. [PMID: 37037381 DOI: 10.1016/j.neuroimage.2023.120098] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/28/2023] [Accepted: 04/07/2023] [Indexed: 04/12/2023] Open
Abstract
Combining walking with a demanding cognitive task is traditionally expected to elicit decrements in gait and/or cognitive task performance. However, it was recently shown that, in a cohort of young adults, most participants improved performance when walking was added to performance of a Go/NoGo response inhibition task. The present study aims to extend these previous findings to an older adult cohort, to investigate whether this improvement when dual-tasking is observed in healthy older adults. Mobile Brain/Body Imaging (MoBI) was used to record electroencephalographic (EEG) activity, three-dimensional (3D) gait kinematics and behavioral responses in the Go/NoGo task, during sitting or walking on a treadmill, in 34 young adults and 37 older adults. Increased response accuracy during walking, independent of age, was found to correlate with slower responses to stimuli (r = 0.44) and with walking-related EEG amplitude modulations over frontocentral regions (r = 0.47) during the sensory gating (N1) and conflict monitoring (N2) stages of inhibition, and over left-lateralized prefrontal regions (r = 0.47) during the stage of inhibitory control implementation. These neural activity changes are related to the cognitive component of inhibition, and they were interpreted as signatures of behavioral improvement during walking. On the other hand, aging, independent of response accuracy during walking, was found to correlate with slower treadmill walking speeds (r = -0.68) and attenuation in walking-related EEG amplitude modulations over left-dominant frontal (r = -0.44) and parietooccipital regions (r = 0.48) during the N2 stage, and over centroparietal regions (r = 0.48) during the P3 stage. These neural activity changes are related to the motor component of inhibition, and they were interpreted as signatures of aging. Older adults whose response accuracy 'paradoxically' improved during walking manifested neural signatures of both behavioral improvement and aging, suggesting that their flexibility in reallocating neural resources while walking might be maintained for the cognitive but not for the motor inhibitory component. These distinct neural signatures of aging and behavior can potentially be used to identify 'super-agers', or individuals at risk for cognitive decline due to aging or neurodegenerative disease.
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Affiliation(s)
- Eleni Patelaki
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, New York, 14642, USA; Department of Biomedical Engineering, University of Rochester, 201 Robert B. Goergen Hall Rochester, New York, 14627, USA
| | - John J Foxe
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, New York, 14642, USA.
| | - Emma P Mantel
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, New York, 14642, USA
| | - George Kassis
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, New York, 14642, USA
| | - Edward G Freedman
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, New York, 14642, USA.
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Dietz N, Alhourani A, Wylie SA, McDonnell JL, Phibbs FT, Dawant BM, Rodriguez WJ, Bradley EB, Neimat JS, van Wouwe NC. Effects of deep brain stimulation target on the activation and suppression of action impulses. Clin Neurophysiol 2022; 144:50-58. [PMID: 36242948 PMCID: PMC11075516 DOI: 10.1016/j.clinph.2022.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Deep brain stimulation (DBS) is an effective treatment to improve motor symptoms in Parkinson's disease (PD). The Globus Pallidus (GPi) and the Subthalamic Nucleus (STN) are the most targeted brain regions for stimulation and produce similar improvements in PD motor symptoms. However, our understanding of stimulation effects across targets on inhibitory action control processes is limited. We compared the effects of STN (n = 20) and GPi (n = 13) DBS on inhibitory control in PD patients. METHODS We recruited PD patients undergoing DBS at the Vanderbilt Movement Disorders Clinic and measured their performance on an inhibitory action control task (Simon task) before surgery (optimally treated medication state) and after surgery in their optimally treated state (medication plus their DBS device turned on). RESULTS DBS to both STN and GPi targets induced an increase in fast impulsive errors while simultaneously producing more proficient reactive suppression of interference from action impulses. CONCLUSIONS Stimulation in GPi produced similar effects as STN DBS, indicating that stimulation to either target increases the initial susceptibility to act on strong action impulses while concomitantly improving the ability to suppress ongoing interference from activated impulses. SIGNIFICANCE Action impulse control processes are similarly impacted by stimulating dissociable nodes in frontal-basal ganglia circuitry.
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Affiliation(s)
- Nicholas Dietz
- Department of Neurosurgery, University of Louisville, 220 Abraham Flexner Way, Louisville, KY 40202, USA
| | - Ahmad Alhourani
- Department of Neurosurgery, University of Louisville, 220 Abraham Flexner Way, Louisville, KY 40202, USA
| | - Scott A Wylie
- Department of Neurosurgery, University of Louisville, 220 Abraham Flexner Way, Louisville, KY 40202, USA
| | - Jessica L McDonnell
- Department of Neurosurgery, University of Louisville, 220 Abraham Flexner Way, Louisville, KY 40202, USA
| | - Fenna T Phibbs
- Department of Neurology, Vanderbilt University Medical Center, 1301 Medical Center Drive, Suite 3930, Nashville, TN 37232, USA
| | - Benoit M Dawant
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN, USA
| | - William J Rodriguez
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN, USA
| | - Elise B Bradley
- Department of Neurology, Vanderbilt University Medical Center, 1301 Medical Center Drive, Suite 3930, Nashville, TN 37232, USA
| | - Joseph S Neimat
- Department of Neurosurgery, University of Louisville, 220 Abraham Flexner Way, Louisville, KY 40202, USA
| | - Nelleke C van Wouwe
- Department of Neurosurgery, University of Louisville, 220 Abraham Flexner Way, Louisville, KY 40202, USA; Department of Neurology, Vanderbilt University Medical Center, 1301 Medical Center Drive, Suite 3930, Nashville, TN 37232, USA.
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Wang Z, Pi Y, Tan X, Wang Z, Chen R, Liu Y, Guo W, Zhang J. Effects of Wu Qin Xi exercise on reactive inhibition in Parkinson’s disease: A randomized controlled clinical trial. Front Aging Neurosci 2022; 14:961938. [PMID: 36158558 PMCID: PMC9490077 DOI: 10.3389/fnagi.2022.961938] [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: 06/05/2022] [Accepted: 08/11/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveMotor symptom in patients with Parkinson’s disease (PD) are related to reduced motor inhibitory ability (proactive and reactive inhibition). Although exercise has been shown to improve this ability, its effects on different levels of motor inhibition have not been determined.Materials and methodsSixty patients with PD aged 55–75 years were allocated randomly to 24-week exercise interventions [Wu Qin Xi exercise (WQX) and stretching exercise (SE)]. The stop signal task and questionnaires were administered pre and post interventions. Twenty-five age-matched healthy controls were recruited to obtain reference values for inhibition.ResultsCompared to healthy controls, patients with PD showed motor inhibition deficits in reactive inhibition, but not in proactive inhibition. Post-intervention, the WQX group showed significant improvement in reactive inhibition compared to the SE group. In both the WQX and SE groups, movement speed was improved post-intervention, accompanied by reduction in negative emotions, stable improvement of sleep quality, and high self-reported satisfaction levels.ConclusionThis study demonstrated that Wu Qin Xi exercise can improve the reactive inhibition of patients with PD. Our results provide theoretical support for the formulation of reasonable and effective exercise prescriptions for PD rehabilitation.Clinical trial registration[http://www.chictr.org.cn], identifier [ChiCTR2000038517].
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Affiliation(s)
- Zhen Wang
- School of Psychology, Shanghai University of Sport, Shanghai, China
- School of Exercise and Healthy Science, Xi’an Physical Education University, Xi’an, China
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Yanling Pi
- Shanghai Punan Hospital of Pudong New District, Shanghai, China
| | - Xiaoyin Tan
- Faculty of Health Sciences and Sports, Macao Polytechnic University, Macao, Macao SAR, China
| | - Zhen Wang
- School of Martial Arts, Shanghai University of Sport, Shanghai, China
| | - Robert Chen
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
- Division of Neurology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Yu Liu
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Wei Guo
- Shanghai Yishen Health Management Co., Ltd., Shanghai, China
| | - Jian Zhang
- School of Psychology, Shanghai University of Sport, Shanghai, China
- *Correspondence: Jian Zhang,
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Wang Z, Pi YL, Wu Y, Wei J, Li Y, Zhang J, Wang Z. Selective effects of exercise on reactive and proactive inhibition in Parkinson's disease. PeerJ 2022; 10:e13628. [PMID: 35765594 PMCID: PMC9233896 DOI: 10.7717/peerj.13628] [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: 03/02/2022] [Accepted: 06/02/2022] [Indexed: 01/17/2023] Open
Abstract
Objective Patients with Parkinson's disease (PD) have an obvious motor inhibition disorder, which is closely related to their motor symptoms. Although previous studies have shown that exercise can improve their inhibition deficits, the effect of exercise on different types of inhibition (proactive and reactive inhibition) has not been addressed. Methods We used a behavioral paradigm combined with a series of questionnaires to explore the effect of long-term exercise on different types of motor inhibition in 59 patients with PD aged 55-75 years. According to the intensity and frequency of exercise, the participants were divided into regular-exercise and no-exercise groups. To obtain the average reference value for inhibition ability at the same age, we also recruited 30 healthy elderly people as controls. Results The main defect in the motor inhibition of PD is reactive inhibition, while proactive inhibition has no obvious differences compared with healthy controls. Additionally, compared with the non-exercise group, PD in the exercise group showed significantly better reaction speeds and reactive control ability, fewer motor symptoms and negative emotions. Conclusions Taken together, the motor inhibition defects of patients with PD affect only reactive inhibition. In addition, PD with exercise reported fewer negative emotions than that of the non-exercise group, indicating that exercise can relieve negative emotions and improve behavioral symptoms and quality of life in PD to a certain extent. We demonstrate for the first time that exercise has and can improve reactive inhibition in PD patients and has no effect on proactive inhibition.
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Affiliation(s)
- Zhen Wang
- School of Exercise and Health Science, Xi’an Physical Education University, Xi’an, China,School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Yan-Ling Pi
- Shanghai Punan Hospital of Pudong New District, Shanghai, China
| | - Yin Wu
- School of Economics and Management, Shanghai University of Sport, Shanghai, China
| | - Jianing Wei
- School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Yuting Li
- School of Psychology, Shanghai University of Sport, Shanghai, China,School of Nursing, Anhui University of Chinese Medicine, Hefei, China
| | - Jian Zhang
- School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Zhen Wang
- School of Martial Arts, Shanghai University of Sport, Shanghai, China
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Arten TL, Hamdan AC. NExecutive functions and memory in Parkinson's disease patients with Deep Brain Stimulation. AGING AND HEALTH RESEARCH 2022. [DOI: 10.1016/j.ahr.2022.100065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Wicht CA, De Pretto M, Mouthon M, Spierer L. Neural correlates of expectations-induced effects of caffeine intake on executive functions. Cortex 2022; 150:61-84. [DOI: 10.1016/j.cortex.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/25/2022] [Accepted: 02/18/2022] [Indexed: 11/29/2022]
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De Pretto M, Mouthon M, Debove I, Pollo C, Schüpbach M, Spierer L, Accolla EA. Proactive inhibition is not modified by deep brain stimulation for Parkinson's disease: An electrical neuroimaging study. Hum Brain Mapp 2021; 42:3934-3949. [PMID: 34110074 PMCID: PMC8288097 DOI: 10.1002/hbm.25530] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 04/23/2021] [Accepted: 05/03/2021] [Indexed: 11/06/2022] Open
Abstract
In predictable contexts, motor inhibitory control can be deployed before the actual need for response suppression. The brain functional underpinnings of proactive inhibition, and notably the role of basal ganglia, are not entirely identified. We investigated the effects of deep brain stimulation of the subthalamic nucleus or internal globus pallidus on proactive inhibition in patients with Parkinson's disease. They completed a cued go/no-go proactive inhibition task ON and (unilateral) OFF stimulation while EEG was recorded. We found no behavioural effect of either subthalamic nucleus or internal globus pallidus deep brain stimulation on proactive inhibition, despite a general improvement of motor performance with subthalamic nucleus stimulation. In the non-operated and subthalamic nucleus group, we identified periods of topographic EEG modulation by the level of proactive inhibition. In the subthalamic nucleus group, source estimation analysis suggested the initial involvement of bilateral frontal and occipital areas, followed by a right lateralized fronto-basal network, and finally of right premotor and left parietal regions. Our results confirm the overall preservation of proactive inhibition capacities in both subthalamic nucleus and internal globus pallidus deep brain stimulation, and suggest a partly segregated network for proactive inhibition, with a preferential recruitment of the indirect pathway.
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Affiliation(s)
- Michael De Pretto
- Neurology Unit, Medicine Section, Faculty of Sciences and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Michael Mouthon
- Neurology Unit, Medicine Section, Faculty of Sciences and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Ines Debove
- Movement Disorders Center, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Claudio Pollo
- Department of Neurosurgery, Inselspital University Hospital Bern, Bern, Switzerland
| | - Michael Schüpbach
- Movement Disorders Center, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Lucas Spierer
- Neurology Unit, Medicine Section, Faculty of Sciences and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Ettore A Accolla
- Neurology Unit, Medicine Section, Faculty of Sciences and Medicine, University of Fribourg, Fribourg, Switzerland.,Neurology Unit, Department of Medicine, HFR - Cantonal Hospital Fribourg, Fribourg, Switzerland
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Xiao G, Song Y, Zhang Y, Xing Y, Zhao H, Xie J, Xu S, Gao F, Wang M, Xing G, Cai X. Microelectrode Arrays Modified with Nanocomposites for Monitoring Dopamine and Spike Firings under Deep Brain Stimulation in Rat Models of Parkinson's Disease. ACS Sens 2019; 4:1992-2000. [PMID: 31272150 DOI: 10.1021/acssensors.9b00182] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Little is known about the efficacy of deep brain stimulation (DBS) as an effective treatment for Parkinson's Disease (PD) because of the lack of multichannel neural electrical and chemical detection techniques at the cellular level. In this study, a 7-mm-long and 250-μm-wide microelectrode array (MEA) was fabricated to provide real-time monitoring of dopamine (DA) concentration and neural spike firings in the caudate putamen (CPU) of rats with PD. Platinumn nanoparticles and reduced graphene oxide nanocomposites (Pt/rGO) were modified onto the sensitive microelectrode sites. The detection limit (50 nM) and sensitivity (8.251 pA/μM) met the specific requirements for DA detection in vivo. A single neural spike was isolated due to the high signal-to-noise ratio of the MEA. DBS was applied in the affected side of the globus pallidus internal (GPi) in PD rats. After DBS, the concentration of DA in the bilateral CPU increased markedly. The mean increment of the ipsilateral DA was 7.33 μM (increasing from 0.54 μM to 7.87 μM), which was 2.2-fold higher than the increment in the contralateral side. The mean amplitude of neural spikes in the bilateral CPU decreased more than 10%, and was more obvious in the ipsilateral side where the spike amplitude changed from 169 μV to 134 μV. Spike firing rate decreased by 65% (ipsilateral side) and 51% (contralateral side). The power of the local field potential decreased to 940 μW (ipsilateral side) and 530 μW (contralateral side) in 0-30 Hz. Collectively, our data show that the GPi-DBS plays a significant regulatory role in the bilateral CPU in terms of DA concentration, spike firing, and power; furthermore, the ipsilateral variations of the dual mode signals were more significant than those in the contralateral side. These results provide new detection and stimulation technology for understanding the mechanisms underlying Parkinson's disease and should, therefore, represent a useful resource for the design of future treatments.
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Affiliation(s)
- Guihua Xiao
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yilin Song
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yu Zhang
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yu Xing
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Hongyan Zhao
- Key Laboratory for Neuroscience, Ministry of Education and Ministry of Public Health Neuroscience Research, Institute and Department of Neurobiology, Peking University, Beijing 100191, PR China
| | - Jingyu Xie
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Shengwei Xu
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Fei Gao
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Mixia Wang
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Guogang Xing
- Key Laboratory for Neuroscience, Ministry of Education and Ministry of Public Health Neuroscience Research, Institute and Department of Neurobiology, Peking University, Beijing 100191, PR China
| | - Xinxia Cai
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
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