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Tang Y, Zhu H, Xiao L, Li R, Han H, Tang W, Liu D, Zhou C, Liu D, Yang Z, Zhou L, Xiao B, Rominger A, Shi K, Hu S, Feng L. Individual cerebellar metabolic connectome in patients with MTLE and NTLE associated with surgical prognosis. Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06762-2. [PMID: 38805089 DOI: 10.1007/s00259-024-06762-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 05/12/2024] [Indexed: 05/29/2024]
Abstract
PURPOSE This study aimed to comprehensively explore the different metabolic connectivity topological changes in MTLE and NTLE, as well as their association with surgical outcomes. METHODS This study enrolled a cohort of patients with intractable MTLE and NTLE. Each individual's metabolic connectome, as determined by Kullback-Leibler divergence similarity estimation for the [18F]FDG PET image, was employed to conduct a comprehensive analysis of the cerebral metabolic network. Alterations in network connectivity were assessed by extracting and evaluating the strength of edge and weighted connectivity. By utilizing these two connectivity strength metrics with the cerebellum, we explored the network properties of connectivity and its association with prognosis in surgical patients. RESULTS Both MTLE and NTLE patients exhibited substantial alterations in the connectivity of the metabolic network at the edge and nodal levels (p < 0.01, FDR corrected). The key disparity between MTLE and NTLE was observed in the cerebellum. In MTLE, there was a predominance of increased connectivity strength in the cerebellum. Whereas, a decrease in cerebellar connectivity was identified in NTLE. It was found that in MTLE, higher edge connectivity and weighted connectivity strength in the contralateral cerebellar hemisphere correlated with improved surgical outcomes. Conversely, in NTLE, a higher edge metabolic connectivity strength in the ipsilateral cerebellar hemisphere suggested a worse surgical prognosis. CONCLUSION The cerebellum exhibits distinct topological characteristics in the metabolic networks between MTLE and NTLE. The hyper- or hypo-metabolic connectivity in the cerebellum may be a prognostic biomarker of surgical prognosis, which might aid in therapeutic decision-making for TLE individuals.
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Affiliation(s)
- Yongxiang Tang
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Department of Nuclear Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Haoyue Zhu
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, 410008, PR China
| | - Ling Xiao
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Rong Li
- The Clinical Hospital of Chengdu Brain Science Institute, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
- MOE Key Laboratory for Neuroinformation, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, University of Electronic Science and Technology of China, Chengdu, China
| | - Honghao Han
- The Clinical Hospital of Chengdu Brain Science Institute, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
- MOE Key Laboratory for Neuroinformation, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, University of Electronic Science and Technology of China, Chengdu, China
| | - Weiting Tang
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, 410008, PR China
| | - Ding Liu
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Chunyao Zhou
- Department of Neurosurgery, Xiangya Hospital, Central Southern University, Changsha, China
| | - Dingyang Liu
- Department of Neurosurgery, Xiangya Hospital, Central Southern University, Changsha, China
| | - Zhiquan Yang
- Department of Neurosurgery, Xiangya Hospital, Central Southern University, Changsha, China
| | - Luo Zhou
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, 410008, PR China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, 410008, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Axel Rominger
- Department of Nuclear Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Kuangyu Shi
- Department of Nuclear Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
- Department of Informatics, Technische Universität München, Munich, Germany
| | - Shuo Hu
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
- Key Laboratory of Biological Nanotechnology of National Health Commission, Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Li Feng
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, 410008, PR China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
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2
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Bakhtiari A, Benedek K, Law I, Fagerlund B, Mortensen EL, Osler M, Lauritzen M, Larsson HBW, Vestergaard MB. Early cerebral amyloid-β accumulation and hypermetabolism are associated with subtle cognitive deficits before accelerated cerebral atrophy. GeroScience 2024; 46:769-782. [PMID: 38102439 PMCID: PMC10828321 DOI: 10.1007/s11357-023-01031-w] [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: 10/23/2023] [Accepted: 12/02/2023] [Indexed: 12/17/2023] Open
Abstract
AIMS Alzheimer's disease (AD) is characterized by the accumulation of amyloid beta (Aβ) in the brain. The deposition of Aβ is believed to initiate a detrimental cascade, including cerebral hypometabolism, accelerated brain atrophy, and cognitive problems-ultimately resulting in AD. However, the timing and causality of the cascade resulting in AD are not yet fully established. Therefore, we examined whether early Aβ accumulation affects cerebral glucose metabolism, atrophy rate, and age-related cognitive decline before the onset of neurodegenerative disease. METHODS Participants from the Metropolit 1953 Danish Male Birth Cohort underwent brain positron emission tomography (PET) imaging using the radiotracers [11C]Pittsburgh Compound-B (PiB) (N = 70) and [18F]Fluorodeoxyglucose (FDG) (N = 76) to assess cerebral Aβ accumulation and glucose metabolism, respectively. The atrophy rate was calculated from anatomical magnetic resonance imaging (MRI) scans conducted presently and 10 years ago. Cognitive decline was examined from neurophysiological tests conducted presently and ten or 5 years ago. RESULTS Higher Aβ accumulation in AD-critical brain regions correlated with greater visual memory decline (p = 0.023). Aβ accumulation did not correlate with brain atrophy rates. Increased cerebral glucose metabolism in AD-susceptible regions correlated with worse verbal memory performance (p = 0.040). CONCLUSIONS Aβ accumulation in known AD-related areas was associated with subtle cognitive deficits. The association was observed before hypometabolism or accelerated brain atrophy, suggesting that Aβ accumulation is involved early in age-related cognitive dysfunction. The association between hypermetabolism and worse memory performance may be due to early compensatory mechanisms adapting for malfunctioning neurons by increasing metabolism.
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Affiliation(s)
- Aftab Bakhtiari
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet Glostrup, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
- Department of Clinical Neurophysiology, The Neuroscience Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
- Faculty of Health and Medical Sciences, Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark.
- Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Krisztina Benedek
- Department of Neurology, Neurophysiology, Zealand University Hospital, Roskilde, Denmark
| | - Ian Law
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, , University of Copenhagen, Copenhagen, Denmark
| | - Birgitte Fagerlund
- Department of Psychology, University of Copenhagen, Copenhagen, Denmark
- Child and Adolescent Mental Health Center, Copenhagen University Hospital - Mental Health Services CPH, Copenhagen, Denmark
| | | | - Merete Osler
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
- Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Martin Lauritzen
- Department of Clinical Neurophysiology, The Neuroscience Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark
- Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Henrik B W Larsson
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet Glostrup, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Mark B Vestergaard
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet Glostrup, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
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3
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Wheeler KV, Irimia A, Braskie MN. Using Neuroimaging to Study Cerebral Amyloid Angiopathy and Its Relationship to Alzheimer's Disease. J Alzheimers Dis 2024; 97:1479-1502. [PMID: 38306032 DOI: 10.3233/jad-230553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Cerebral amyloid angiopathy (CAA) is characterized by amyloid-β aggregation in the media and adventitia of the leptomeningeal and cortical blood vessels. CAA is one of the strongest vascular contributors to Alzheimer's disease (AD). It frequently co-occurs in AD patients, but the relationship between CAA and AD is incompletely understood. CAA may drive AD risk through damage to the neurovascular unit and accelerate parenchymal amyloid and tau deposition. Conversely, early AD may also drive CAA through cerebrovascular remodeling that impairs blood vessels from clearing amyloid-β. Sole reliance on autopsy examination to study CAA limits researchers' ability to investigate CAA's natural disease course and the effect of CAA on cognitive decline. Neuroimaging allows for in vivo assessment of brain function and structure and can be leveraged to investigate CAA staging and explore its associations with AD. In this review, we will discuss neuroimaging modalities that can be used to investigate markers associated with CAA that may impact AD vulnerability including hemorrhages and microbleeds, blood-brain barrier permeability disruption, reduced cerebral blood flow, amyloid and tau accumulation, white matter tract disruption, reduced cerebrovascular reactivity, and lowered brain glucose metabolism. We present possible areas for research inquiry to advance biomarker discovery and improve diagnostics.
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Affiliation(s)
- Koral V Wheeler
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina Del Rey, CA, USA
| | - Andrei Irimia
- Ethel Percy Andrus Gerontology Center, USC Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
- Department of Biomedical Engineering, Corwin D. Denney Research Center, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, USA
| | - Meredith N Braskie
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina Del Rey, CA, USA
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4
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Zhang S, Zhang Y, Wen Z, Yang Y, Bu T, Bu X, Ni Q. Cognitive dysfunction in diabetes: abnormal glucose metabolic regulation in the brain. Front Endocrinol (Lausanne) 2023; 14:1192602. [PMID: 37396164 PMCID: PMC10312370 DOI: 10.3389/fendo.2023.1192602] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/25/2023] [Indexed: 07/04/2023] Open
Abstract
Cognitive dysfunction is increasingly recognized as a complication and comorbidity of diabetes, supported by evidence of abnormal brain structure and function. Although few mechanistic metabolic studies have shown clear pathophysiological links between diabetes and cognitive dysfunction, there are several plausible ways in which this connection may occur. Since, brain functions require a constant supply of glucose as an energy source, the brain may be more susceptible to abnormalities in glucose metabolism. Glucose metabolic abnormalities under diabetic conditions may play an important role in cognitive dysfunction by affecting glucose transport and reducing glucose metabolism. These changes, along with oxidative stress, inflammation, mitochondrial dysfunction, and other factors, can affect synaptic transmission, neural plasticity, and ultimately lead to impaired neuronal and cognitive function. Insulin signal triggers intracellular signal transduction that regulates glucose transport and metabolism. Insulin resistance, one hallmark of diabetes, has also been linked with impaired cerebral glucose metabolism in the brain. In this review, we conclude that glucose metabolic abnormalities play a critical role in the pathophysiological alterations underlying diabetic cognitive dysfunction (DCD), which is associated with multiple pathogenic factors such as oxidative stress, mitochondrial dysfunction, inflammation, and others. Brain insulin resistance is highly emphasized and characterized as an important pathogenic mechanism in the DCD.
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Affiliation(s)
| | | | | | | | | | | | - Qing Ni
- Department of Endocrinology, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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5
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Chu M, Wen L, Jiang D, Liu L, Nan H, Yue A, Wang Y, Wang Y, Qu M, Wang N, Wu L. Peripheral inflammation in behavioural variant frontotemporal dementia: associations with central degeneration and clinical measures. J Neuroinflammation 2023; 20:65. [PMID: 36890594 PMCID: PMC9996857 DOI: 10.1186/s12974-023-02746-5] [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: 11/17/2022] [Accepted: 02/21/2023] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND Neuroinflammation plays a significant role in the progression of frontotemporal dementia (FTD). However, the association between peripheral inflammatory factors and brain neurodegeneration is poorly understood. We aimed to examine changes in peripheral inflammatory markers in patients with behavioural variant FTD (bvFTD) and explore the potential association between peripheral inflammation and brain structure, metabolism, and clinical parameters. METHODS Thirty-nine bvFTD patients and 40 healthy controls were enrolled and underwent assessment of plasma inflammatory factors, positron emission tomography/magnetic resonance imaging, and neuropsychological assessments. Group differences were tested using Student's t test, Mann‒Whitney U test, or ANOVA. Partial correlation analysis and multivariable regression analysis were implemented using age and sex as covariates to explore the association between peripheral inflammatory markers, neuroimaging, and clinical measures. The false discovery rate was used to correct for the multiple correlation test. RESULTS Plasma levels of six factors, including interleukin (IL)-2, IL-12p70, IL-17A, tumour necrosis superfamily member 13B (TNFSF/BAFF), TNFSF12 (TWEAK), and TNFRSF8 (sCD30), were increased in the bvFTD group. Five factors were significantly associated with central degeneration, including IL-2, IL-12p70, IL-17A, sCD30/TNFRSF8, and tumour necrosis factor (TNF)-α; the association between inflammation and brain atrophy was mainly distributed in frontal-limbic-striatal brain regions, whereas the association with brain metabolism was mainly in the frontal-temporal-limbic-striatal regions. BAFF/TNFSF13B, IL-4, IL-6, IL-17A and TNF-α were found to correlate with clinical measures. CONCLUSION Peripheral inflammation disturbance in patients with bvFTD participates in disease-specific pathophysiological mechanisms, which could be a promising target for diagnosis, treatment, and monitoring therapeutic efficacy.
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Affiliation(s)
- Min Chu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Lulu Wen
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Deming Jiang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Li Liu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Haitian Nan
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Ailing Yue
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Yingtao Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Yihao Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Miao Qu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Ningqun Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
| | - Liyong Wu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
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Segobin S, Renault C, Viader F, Eustache F, Pitel AL, Quinette P. Disruption in normal correlational patterns of metabolic networks in the limbic circuit during transient global amnesia. Brain Commun 2023; 5:fcad082. [PMID: 37101832 PMCID: PMC10123398 DOI: 10.1093/braincomms/fcad082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/06/2022] [Accepted: 03/17/2023] [Indexed: 04/28/2023] Open
Abstract
Transient global amnesia is characterized by the sudden apparition of severe episodic amnesia, mainly anterograde, associated with emotional changes. Even though the symptoms are stereotyped, cerebral mechanism underlying transient global amnesia remains unexplained and previous studies using positron emission tomography do not show any clear results or consensus on cerebral regions impacted during transient global amnesia. This study included a group of 10 transient global amnesic patients who underwent 18F-fluorodeoxyglucose positron emission tomography during the acute or recovery phase of the episode and 10 paired healthy controls. Episodic memory was evaluated with the encoding-storage-retrieval paradigm and a story recall test of the Wechsler's memory scale and anxiety was assessed with the Spielberger scale. We used statistical parametric mapping to identify modifications of whole-brain metabolism. Regarding hypometabolism, there was no brain region systematically affected in all transient global amnesic patients and the comparison between amnesic patients and controls did not show any significant differences. To better understand the specific implication of the limbic circuit in the pathophysiology of transient global amnesia, we then conducted a correlational analysis that included regions of this network. Our findings showed that in healthy controls, regions of the limbic circuit seem to operate in a synchronized way with all regions being highly correlated to each other. On the opposite, in transient global amnesic patients, we observed a clear disruption of this normal correlational patterns between regions with the medial temporal lobe (the hippocampus, parahippocampal gyrus and amygdala) included in one cluster and the orbitofrontal cortex, anterior and posterior cingulate gyrus and thalamus gathered in the other one. Given the individual variability in the time course of transient global amnesia, the direct comparison between a group of patients and controls does not seem to favour the identification of subtle and transient alterations in regional metabolism. The involvement of an extended network, such as the limbic circuit, seems more likely to explain the symptoms of patients. Indeed, the synchronization of regions within the limbic circuit seems to be altered during transient global amnesia, which could explain the amnesia and anxiety observed in transient global amnesic patients. The present study thus deepens our understanding of the mechanisms underlying not only amnesia but also the emotional component of transient global amnesia by considering it as a disruption in the normal correlational patterns within the limbic circuit.
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Affiliation(s)
| | | | - Fausto Viader
- Normandie University, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14032, Caen, Normandie, France
| | - Francis Eustache
- Normandie University, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14032, Caen, Normandie, France
| | | | - Peggy Quinette
- Correspondence to: Peggy Quinette Unité de recherche Inserm-EPHE-Unicaen U1077 Neuropsychologie et Imagerie de la Mémoire Humaine Pôle des Formations et de Recherches en Santé 2, rue des Rochambelles, F-14032 Caen Cedex CS, France E-mail:
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7
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Li TR, Zhang YD, Wang Q, Shao XQ, Lv RJ. Recognition of seizure semiology and semiquantitative FDG-PET analysis of anti-LGI1 encephalitis. CNS Neurosci Ther 2021; 27:1173-1181. [PMID: 34291554 PMCID: PMC8446218 DOI: 10.1111/cns.13707] [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: 12/16/2020] [Revised: 05/31/2021] [Accepted: 07/06/2021] [Indexed: 12/11/2022] Open
Abstract
Aims Anti‐leucine‐rich glioma‐inactivated 1 (LGI1) autoimmune encephalitis (AE) is characterized by complex manifestations of seizures. Here, we report a new seizure semiology, attempt to classify the disease by semiology type, and explore the metabolic pattern of each group. Methods Anti‐LGI1 AE patients were retrospectively screened between May 2014 and September 2019 in our tertiary epilepsy center. All enrolled patients had seizures during long‐range video electroencephalogram (EEG) recordings, and all patients (except one) underwent [18F] fluoro‐2‐deoxyglucose (FDG) positron emission tomography (PET) scans. Voxel‐based metabolic analysis and z‐distribution analysis were carried out to determine the metabolic pattern. Results Thirty‐three patients were enrolled. According to the patients’ seizure semiology, we divided the patients into four groups: focal impaired awareness seizures (FIAS, n = 17), faciobrachial dystonic seizures (FBDS)‐only (n = 6), FBDS‐plus (n = 8), and focal aware motor seizures (FAMS) (n = 2). No significant differences were found in the clinical manifestations or accessory tests except for the onset age (FIAS < FBDS‐plus) and seizure semiology. This was the first study to extensively describe the clinical manifestations and EEG of FAMS in anti‐LGI1 AE patients. In addition, we found that the patients with different semiologies all showed a wide range of abnormal metabolism, which is not limited to the temporal regions and basal ganglia, and extends far beyond our previous interpretation of FDG‐PET data. Conclusion Our results showed that FAMS can serve as a rare indicative seizure semiology of anti‐LGI1 AE and that individuals with this disease exhibited widespread functional network alterations.
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Affiliation(s)
- Tao-Ran Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, Beijing, China.,Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Yu-Di Zhang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, Beijing, China.,Department of Neurology, the Second Hospital of Hebei Medical University, Hebei Medical University, Shijiazhuang, China
| | - Qun Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Xiao-Qiu Shao
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Rui-Juan Lv
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, Beijing, China
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8
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Gao Q, Khan S, Zhang L. Brain activity and transcriptional profiling in mice under chronic jet lag. Sci Data 2020; 7:361. [PMID: 33087702 PMCID: PMC7578042 DOI: 10.1038/s41597-020-00709-6] [Citation(s) in RCA: 3] [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: 07/17/2020] [Accepted: 09/29/2020] [Indexed: 12/21/2022] Open
Abstract
Shift work is known to be associated with an increased risk of neurological and psychiatric diseases, but how it contributes to the development of these diseases remains unclear. Chronic jet lag (CJL) induced by shifting light-dark cycles repeatedly is a commonly used protocol to mimic the environmental light/dark changes encountered by shift workers. Here we subjected wildtype mice to CJL and performed positron emission tomography imaging of glucose metabolism to monitor brain activities. We also conducted RNA sequencing using prefrontal cortex and nucleus accumbens tissues from these animals, which are brain regions strongly implicated in the pathology of various neurological and psychiatric conditions. Our results reveal the alterations of brain activities and systematic reprogramming of gene expression in brain tissues under CJL, building hypothesis for how CJL increases the susceptibility to neurological and psychiatric diseases.
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Affiliation(s)
- Qian Gao
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Suliman Khan
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450014, China
| | - Luoying Zhang
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
- Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
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9
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Brugnolo A, De Carli F, Pagani M, Morbelli S, Jonsson C, Chincarini A, Frisoni GB, Galluzzi S, Perneczky R, Drzezga A, van Berckel BNM, Ossenkoppele R, Didic M, Guedj E, Arnaldi D, Massa F, Grazzini M, Pardini M, Mecocci P, Dottorini ME, Bauckneht M, Sambuceti G, Nobili F. Head-to-Head Comparison among Semi-Quantification Tools of Brain FDG-PET to Aid the Diagnosis of Prodromal Alzheimer's Disease. J Alzheimers Dis 2020; 68:383-394. [PMID: 30776000 DOI: 10.3233/jad-181022] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Several automatic tools have been implemented for semi-quantitative assessment of brain [18]F-FDG-PET. OBJECTIVE We aimed to head-to-head compare the diagnostic performance among three statistical parametric mapping (SPM)-based approaches, another voxel-based tool (i.e., PALZ), and a volumetric region of interest (VROI-SVM)-based approach, in distinguishing patients with prodromal Alzheimer's disease (pAD) from controls. METHODS Sixty-two pAD patients (MMSE score = 27.0±1.6) and one hundred-nine healthy subjects (CTR) (MMSE score = 29.2±1.2) were enrolled in five centers of the European Alzheimer's Disease Consortium. The three SPM-based methods, based on different rationales, included 1) a cluster identified through the correlation analysis between [18]F-FDG-PET and a verbal memory test (VROI-1), 2) a VROI derived from the comparison between pAD and CTR (VROI-2), and 3) visual analysis of individual maps obtained by the comparison between each subject and CTR (SPM-Maps). The VROI-SVM approach was based on 6 VROI plus 6 VROI asymmetry values derived from the pAD versus CTR comparison thanks to support vector machine (SVM). RESULTS The areas under the ROC curves between pAD and CTR were 0.84 for VROI-1, 0.83 for VROI-2, 0.79 for SPM maps, 0.87 for PALZ, and 0.95 for VROI-SVM. Pairwise comparisons of Youden index did not show statistically significant differences in diagnostic performance between VROI-1, VROI-2, SPM-Maps, and PALZ score whereas VROI-SVM performed significantly (p < 0.005) better than any of the other methods. CONCLUSION The study confirms the good accuracy of [18]F-FDG-PET in discriminating healthy subjects from pAD and highlights that a non-linear, automatic VROI classifier based on SVM performs better than the voxel-based methods.
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Affiliation(s)
- Andrea Brugnolo
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, and Mother-Child health (DINOGMI), University of Genoa, Italy.,Clinical Psychology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Fabrizio De Carli
- Institute of Bioimaging and Molecular Physiology, Consiglio Nazionale delle Ricerche (CNR), Genoa, Italy
| | - Marco Pagani
- Institute of Cognitive Sciences and Technologies, Consiglio Nazionale delle Ricerche (CNR), Rome, Italy.,Department of Nuclear Medicine, Karolinska Hospital, Stockholm, Sweden
| | - Slivia Morbelli
- Department of Health Sciences (DISSAL), University of Genoa, Italy.,Nuclear Medicine Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Cathrine Jonsson
- Medical Radiation Physics and Nuclear Medicine, Imaging and Physiology, Karolinska University Hospital, Stockholm, Sweden
| | | | - Giovanni B Frisoni
- LENITEM Laboratory of Epidemiology and Neuroimaging, IRCCS S. Giovanni di Dio-FBF, Brescia, Italy.,University Hospitals and University of Geneva, Geneva, Switzerland
| | - Samantha Galluzzi
- LENITEM Laboratory of Epidemiology and Neuroimaging, IRCCS S. Giovanni di Dio-FBF, Brescia, Italy
| | - Robert Perneczky
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Germany.,Department of Psychiatry and Psychotherapy, Technische Universität München, Munich, Germany.,German Center for Neurodegenerative Diseases (DZNE) Munich, Germany.,Neuroepidemiology and Ageing Research Unit, School of Public Health, Faculty of Medicine, The Imperial College London of Science, Technology and Medicine, London, UK
| | - Alexander Drzezga
- Department of Nuclear Medicine, University Hospital of Cologne, Germany; previously at Department of Nuclear Medicine, Technische Universität, Munich, Germany
| | - Bart N M van Berckel
- Department of Nuclear Medicine & PET Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Rik Ossenkoppele
- Department of Nuclear Medicine & PET Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Mira Didic
- APHM, CHU Timone, Service de Neurologie et Neuropsychologie, Aix-Marseille University, Marseille, France
| | - Eric Guedj
- APHM, CHU Timone, Service de Médecine Nucléaire, CERIMED, Institut Fresnel, CNRS, Ecole Centrale Marseille, Aix-Marseille University, France
| | - Dario Arnaldi
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, and Mother-Child health (DINOGMI), University of Genoa, Italy.,Neurology Clinics, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Federico Massa
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, and Mother-Child health (DINOGMI), University of Genoa, Italy
| | - Matteo Grazzini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, and Mother-Child health (DINOGMI), University of Genoa, Italy
| | - Matteo Pardini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, and Mother-Child health (DINOGMI), University of Genoa, Italy.,Neurology Clinics, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Patrizia Mecocci
- Section of Gerontology and Geriatrics, University of Perugia, Perugia, Italy
| | - Massimo E Dottorini
- Department of Diagnostic Imaging, Nuclear Medicine Unit, Perugia General Hospital, Perugia, Italy
| | - Matteo Bauckneht
- Department of Health Sciences (DISSAL), University of Genoa, Italy.,Nuclear Medicine Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Gianmario Sambuceti
- Department of Health Sciences (DISSAL), University of Genoa, Italy.,Nuclear Medicine Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Flavio Nobili
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, and Mother-Child health (DINOGMI), University of Genoa, Italy.,Neurology Clinics, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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10
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Imai K, Kimura S, Kiryu Y, Watanabe A, Kinai E, Oka S, Kikuchi Y, Kimura S, Ogata M, Takano M, Minamimoto R, Hotta M, Yokoyama K, Noguchi T, Komatsu K. Neurocognitive dysfunction and brain FDG-PET/CT findings in HIV-infected hemophilia patients and HIV-infected non-hemophilia patients. PLoS One 2020; 15:e0230292. [PMID: 32191714 PMCID: PMC7082013 DOI: 10.1371/journal.pone.0230292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 02/25/2020] [Indexed: 11/18/2022] Open
Abstract
This single-institution cross-sectional study aimed to grasp the prevalence and features of neurocognitive dysfunction in HIV-infected hemophilia patients in Japan. We conducted neuropsychological tests and medical examinations in 56 HIV-infected hemophilia patients who received outpatient treatment at the AIDS Clinical Center, National Center for Global Health and Medicine. A total of 388 HIV-infected non-hemophilia patients who received outpatient treatment at the same institution were included as a control group. To investigate sites responsible for neurocognitive dysfunction in HIV-infected hemophilia patients using brain FDG-PET/CT scans, the accumulation of FDG in each brain region was compared. Approximately 50% of HIV-infected hemophilia patients had neurocognitive dysfunction. The prevalence of asymptomatic neurocognitive impairment was high (34%). Neurocognitive dysfunction was associated with educational level in HIV-infected hemophilia patients. In the symptomatic group, hemophilic arthropathy and history of cerebrovascular disorders were associated with neurocognitive dysfunction. Left temporal lobe function was reduced in the symptomatic group.
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Affiliation(s)
- Koubun Imai
- Department of Psychiatry, Hitachi Medical Education and Research Center, University of Tsukuba Hospital, Hitachi, Ibaraki, Japan
| | - Sota Kimura
- AIDS Clinical Center, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Yoko Kiryu
- AIDS Clinical Center, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Aki Watanabe
- Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Ei Kinai
- Department of Laboratory Medicine, Tokyo Medical University Hospital, Shinjuku, Tokyo, Japan
| | - Shinichi Oka
- AIDS Clinical Center, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Yoshimi Kikuchi
- AIDS Clinical Center, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Satoshi Kimura
- The Center for Education and Research of Infection Prevention and Control, Tokyo Healthcare University, Shinagawa, Tokyo, Japan
| | - Mikiko Ogata
- AIDS Clinical Center, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Misao Takano
- Medical Genomics Center, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Ryogo Minamimoto
- Department of Radiology, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Masatoshi Hotta
- Department of Radiology, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Kota Yokoyama
- Department of Radiology, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
| | - Tomoyuki Noguchi
- Department of Radiology, National Hospital Organization Kyushu Medical Center, Fukuoka, Fukuoka, Japan
| | - Kensuke Komatsu
- AIDS Clinical Center, National Center for Global Health and Medicine, Shinjuku, Tokyo, Japan
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11
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Lee JS, Hong JM, Yoon BS, Son KS, Lee KE, Im DS, Park BN, An YS, Hwang DH, Park CB, Kim BG, Joe EH. Expression of Cellular Receptors in the Ischemic Hemisphere of Mice with Increased Glucose Uptake. Exp Neurobiol 2020; 29:70-79. [PMID: 32122109 PMCID: PMC7075656 DOI: 10.5607/en.2020.29.1.70] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/16/2020] [Accepted: 02/06/2020] [Indexed: 11/19/2022] Open
Abstract
Many previous studies have shown reduced glucose uptake in the ischemic brain. In contrast, in a permanent unilateral common carotid artery occlusion (UCCAO) mouse model, our pilot experiments using 18F-fluorodeoxyglucose positron emission tomography (FDG PET) revealed that a subset of mice exhibited conspicuously high uptake of glucose in the ipsilateral hemisphere at 1 week post-occlusion (asymmetric group), whereas other mice showed symmetric uptake in both hemispheres (symmetric group). Thus, we aimed to understand the discrepancy between the two groups. Cerebral blood flow and histological/metabolic changes were analyzed using laser Doppler flowmetry and immunohistochemistry/Western blotting, respectively. Contrary to the increased glucose uptake observed in the ischemic cerebral hemisphere on FDG PET (p<0.001), cerebral blood flow tended to be lower in the asymmetric group than in the symmetric group (right to left ratio [%], 36.4±21.8 vs. 58.0±24.8, p=0.059). Neuronal death was observed only in the ischemic hemisphere of the asymmetric group. In contrast, astrocytes were more activated in the asymmetric group than in the symmetric group (p<0.05). Glucose transporter-1, and monocarboxylate transporter-1 were also upregulated in the asymmetric group, compared with the symmetric group (p<0.05, respectively). These results suggest that the increased FDG uptake was associated with relatively severe ischemia, and glucose transporter-1 upregulation and astrocyte activation. Glucose metabolism may thus be a compensatory mechanism in the moderately severe ischemic brain.
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Affiliation(s)
- Jin Soo Lee
- Department of Neurology, Ajou University School of Medicine, Korea.,Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University School of Medicine, Suwon 16499, Korea
| | - Ji Man Hong
- Department of Neurology, Ajou University School of Medicine, Korea.,Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University School of Medicine, Suwon 16499, Korea
| | - Bok Seon Yoon
- Department of Neurology, Ajou University School of Medicine, Korea.,Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University School of Medicine, Suwon 16499, Korea
| | - Keoung Sun Son
- Department of Neurology, Ajou University School of Medicine, Korea.,Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University School of Medicine, Suwon 16499, Korea
| | - Kyung Eon Lee
- School of Pharmacy, Kyung Hee University, Seoul 02447, Korea
| | - Doo Soon Im
- Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Bok-Nam Park
- Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Korea
| | - Young-Sil An
- Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Korea
| | - Dong Hoon Hwang
- Department of Brain Science, Ajou University School of Medicine, Korea
| | - Chan Bae Park
- Department of Biology, Ajou University School of Medicine, Korea
| | - Byung Gon Kim
- Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University School of Medicine, Suwon 16499, Korea.,Department of Brain Science, Ajou University School of Medicine, Korea
| | - Eun-Hye Joe
- Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University School of Medicine, Suwon 16499, Korea.,Department of Brain Science, Ajou University School of Medicine, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon 16499, Korea
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12
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Ritz L, Segobin S, Lannuzel C, Laniepce A, Boudehent C, Cabé N, Eustache F, Vabret F, Beaunieux H, Pitel AL. Cerebellar Hypermetabolism in Alcohol Use Disorder: Compensatory Mechanism or Maladaptive Plasticity? Alcohol Clin Exp Res 2019; 43:2212-2221. [DOI: 10.1111/acer.14158] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 07/17/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Ludivine Ritz
- UNICAEN LPCN Normandie Univ Caen France
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
| | - Shailendra Segobin
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
| | - Coralie Lannuzel
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
| | - Alice Laniepce
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
| | - Céline Boudehent
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
- Service d'Addictologie Centre Hospitalier Universitaire de Caen Caen France
| | - Nicolas Cabé
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
- Service d'Addictologie Centre Hospitalier Universitaire de Caen Caen France
| | - Francis Eustache
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
| | - François Vabret
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
- Service d'Addictologie Centre Hospitalier Universitaire de Caen Caen France
| | - Hélène Beaunieux
- UNICAEN LPCN Normandie Univ Caen France
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
| | - Anne Lise Pitel
- Neuropsychologie et Imagerie de la Mémoire Humaine CHU de Caen U1077, INSERM EPHE PSL Research University UNICAEN Normandie Univ Caen France
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13
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Jackson J, Jambrina E, Li J, Marston H, Menzies F, Phillips K, Gilmour G. Targeting the Synapse in Alzheimer's Disease. Front Neurosci 2019; 13:735. [PMID: 31396031 PMCID: PMC6664030 DOI: 10.3389/fnins.2019.00735] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/01/2019] [Indexed: 01/06/2023] Open
Abstract
Dynamic gain and loss of synapses is fundamental to healthy brain function. While Alzheimer's Disease (AD) treatment strategies have largely focussed on beta-amyloid and tau protein pathologies, the synapse itself may also be a critical endpoint to consider regarding disease modification. Disruption of mechanisms of neuronal plasticity, eventually resulting in a net loss of synapses, is implicated as an early pathological event in AD. Synaptic dysfunction therefore may be a final common biological mechanism linking protein pathologies to disease symptoms. This review summarizes evidence supporting the idea of early neuroplastic deficits being prevalent in AD. Changes in synaptic density can occur before overt neurodegeneration and should not be considered to uniformly decrease over the course of the disease. Instead, synaptic levels are influenced by an interplay between processes of degeneration and atrophy, and those of maintenance and compensation at regional and network levels. How these neuroplastic changes are driven by amyloid and tau pathology are varied. A mixture of direct effects of amyloid and tau on synaptic integrity, as well as indirect effects on processes such as inflammation and neuronal energetics are likely to be at play here. Focussing on the synapse and mechanisms of neuroplasticity as therapeutic opportunities in AD raises some important conceptual and strategic issues regarding translational research, and how preclinical research can inform clinical studies. Nevertheless, substrates of neuroplasticity represent an emerging complementary class of drug target that would aim to normalize synapse dynamics and restore cognitive function in the AD brain and in other neurodegenerative diseases.
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Affiliation(s)
- Johanna Jackson
- Lilly Research Centre, Eli Lilly and Company, Windlesham, United Kingdom
| | - Enrique Jambrina
- Lilly Research Laboratories, Eli Lilly and Company, Alcobendas, Spain
| | - Jennifer Li
- Lilly Research Centre, Eli Lilly and Company, Windlesham, United Kingdom
| | - Hugh Marston
- Lilly Research Centre, Eli Lilly and Company, Windlesham, United Kingdom
| | - Fiona Menzies
- Lilly Research Centre, Eli Lilly and Company, Windlesham, United Kingdom
| | - Keith Phillips
- Lilly Research Centre, Eli Lilly and Company, Windlesham, United Kingdom
| | - Gary Gilmour
- Lilly Research Centre, Eli Lilly and Company, Windlesham, United Kingdom
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14
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Defining visual illusions in Parkinson's disease: Kinetopsia and object misidentification illusions. Parkinsonism Relat Disord 2018; 55:111-116. [DOI: 10.1016/j.parkreldis.2018.05.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/17/2018] [Accepted: 05/27/2018] [Indexed: 01/29/2023]
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15
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Aldag M, Armstrong RC, Bandak F, Bellgowan PSF, Bentley T, Biggerstaff S, Caravelli K, Cmarik J, Crowder A, DeGraba TJ, Dittmer TA, Ellenbogen RG, Greene C, Gupta RK, Hicks R, Hoffman S, Latta RC, Leggieri MJ, Marion D, Mazzoli R, McCrea M, O'Donnell J, Packer M, Petro JB, Rasmussen TE, Sammons-Jackson W, Shoge R, Tepe V, Tremaine LA, Zheng J. The Biological Basis of Chronic Traumatic Encephalopathy following Blast Injury: A Literature Review. J Neurotrauma 2018; 34:S26-S43. [PMID: 28937953 DOI: 10.1089/neu.2017.5218] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The United States Department of Defense Blast Injury Research Program Coordinating Office organized the 2015 International State-of-the-Science meeting to explore links between blast-related head injury and the development of chronic traumatic encephalopathy (CTE). Before the meeting, the planning committee examined articles published between 2005 and October 2015 and prepared this literature review, which summarized broadly CTE research and addressed questions about the pathophysiological basis of CTE and its relationship to blast- and nonblast-related head injury. It served to inform participants objectively and help focus meeting discussion on identifying knowledge gaps and priority research areas. CTE is described generally as a progressive neurodegenerative disorder affecting persons exposed to head injury. Affected individuals have been participants primarily in contact sports and military personnel, some of whom were exposed to blast. The symptomatology of CTE overlaps with Alzheimer's disease and includes neurological and cognitive deficits, psychiatric and behavioral problems, and dementia. There are no validated diagnostic criteria, and neuropathological evidence of CTE has come exclusively from autopsy examination of subjects with histories of exposure to head injury. The perivascular accumulation of hyperphosphorylated tau (p-tau) at the depths of cortical sulci is thought to be unique to CTE and has been proposed as a diagnostic requirement, although the contribution of p-tau and other reported pathologies to the development of clinical symptoms of CTE are unknown. The literature on CTE is limited and is focused predominantly on head injuries unrelated to blast exposure (e.g., football players and boxers). In addition, comparative analyses of clinical case reports has been challenging because of small case numbers, selection biases, methodological differences, and lack of matched controls, particularly for blast-exposed individuals. Consequently, the existing literature is not sufficient to determine whether the development of CTE is associated with head injury frequency (e.g., single vs. multiple exposures) or head injury type (e.g., impact, nonimpact, blast-related). Moreover, the incidence and prevalence of CTE in at-risk populations is unknown. Future research priorities should include identifying additional risk factors, pursuing population-based longitudinal studies, and developing the ability to detect and diagnose CTE in living persons using validated criteria.
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Affiliation(s)
- Matt Aldag
- 1 Booz Allen Hamilton , McLean, Virginia
| | - Regina C Armstrong
- 2 Uniformed Services University of the Health Sciences , Bethesda, Maryland
| | - Faris Bandak
- 3 Defense Advanced Research Projects Agency , Arlington, Virginia
| | | | | | - Sean Biggerstaff
- 6 Office of the Assistant Secretary of Defense , Health Affairs, Falls Church, Virginia
| | | | - Joan Cmarik
- 7 Office of the Principal Assistant for Acquisition, United States Army Medical Research and Materiel Command , Frederick, Maryland
| | - Alicia Crowder
- 8 Combat Casualty Care Research Program , United States Army Medical Research and Materiel Command, Fort Detrick, Maryland
| | | | | | - Richard G Ellenbogen
- 10 Departments of Neurological Surgery and Global Health Medicine, University of Washington , Seattle, Washington
| | - Colin Greene
- 11 Joint Trauma Analysis and Prevention of Injuries in Combat Program, Frederick, Maryland
| | - Raj K Gupta
- 12 Department of Defense Blast Injury Research Program Coordinating Office, United States Army Medical Research and Materiel Command , Frederick, Maryland
| | | | | | | | - Michael J Leggieri
- 12 Department of Defense Blast Injury Research Program Coordinating Office, United States Army Medical Research and Materiel Command , Frederick, Maryland
| | - Donald Marion
- 16 Defense and Veterans Brain Injury Center , Silver Spring, Maryland
| | | | | | | | - Mark Packer
- 20 Hearing Center of Excellence , Lackland, Texas
| | - James B Petro
- 21 Office of the Assistant Secretary of Defense, Research and Engineering, Arlington, Virginia
| | - Todd E Rasmussen
- 8 Combat Casualty Care Research Program , United States Army Medical Research and Materiel Command, Fort Detrick, Maryland
| | - Wendy Sammons-Jackson
- 22 Office of the Principal Assistant for Research and Technology , United States Army Medical Research and Materiel Command, Fort Detrick, Maryland
| | - Richard Shoge
- 23 Military Operational Medicine Research Program, United States Army Medical Research and Materiel Command , Fort Detrick, Maryland
| | | | | | - James Zheng
- 25 Program Executive Office Soldier , Fort Belvoir, Virginia
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16
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Bauer CM, Cabral HJ, Killiany RJ. Multimodal Discrimination between Normal Aging, Mild Cognitive Impairment and Alzheimer's Disease and Prediction of Cognitive Decline. Diagnostics (Basel) 2018; 8:diagnostics8010014. [PMID: 29415470 PMCID: PMC5871997 DOI: 10.3390/diagnostics8010014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/08/2018] [Accepted: 01/31/2018] [Indexed: 11/29/2022] Open
Abstract
Alzheimer’s Disease (AD) and mild cognitive impairment (MCI) are associated with widespread changes in brain structure and function, as indicated by magnetic resonance imaging (MRI) morphometry and 18-fluorodeoxyglucose position emission tomography (FDG PET) metabolism. Nevertheless, the ability to differentiate between AD, MCI and normal aging groups can be difficult. Thus, the goal of this study was to identify the combination of cerebrospinal fluid (CSF) biomarkers, MRI morphometry, FDG PET metabolism and neuropsychological test scores to that best differentiate between a sample of normal aging subjects and those with MCI and AD from the Alzheimer’s Disease Neuroimaging Initiative. The secondary goal was to determine the neuroimaging variables from MRI, FDG PET and CSF biomarkers that can predict future cognitive decline within each group. To achieve these aims, a series of multivariate stepwise logistic and linear regression models were generated. Combining all neuroimaging modalities and cognitive test scores significantly improved the index of discrimination, especially at the earliest stages of the disease, whereas MRI gray matter morphometry variables best predicted future cognitive decline compared to other neuroimaging variables. Overall these findings demonstrate that a multimodal approach using MRI morphometry, FDG PET metabolism, neuropsychological test scores and CSF biomarkers may provide significantly better discrimination than any modality alone.
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Affiliation(s)
- Corinna M Bauer
- Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA.
| | - Howard J Cabral
- Department of Biostatistics, Boston University School of Public Health, Boston, MA 02118, USA.
| | - Ronald J Killiany
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA.
- Department of Anatomy and Neurobiology, Center for Biomedical Imaging, Boston University School of Medicine, Boston, MA 02118, USA.
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17
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Casquero-Veiga M, Hadar R, Pascau J, Winter C, Desco M, Soto-Montenegro ML. Response to Deep Brain Stimulation in Three Brain Targets with Implications in Mental Disorders: A PET Study in Rats. PLoS One 2016; 11:e0168689. [PMID: 28033356 PMCID: PMC5199108 DOI: 10.1371/journal.pone.0168689] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 12/05/2016] [Indexed: 12/11/2022] Open
Abstract
Objective To investigate metabolic changes in brain networks by deep brain stimulation (DBS) of the medial prefrontal cortex (mPFC), nucleus accumbens (NAcc) and dorsomedial thalamus (DM) using positron emission tomography (PET) in naïve rats. Methods 43 male Wistar rats underwent stereotactic surgery and concentric bipolar platinum-iridium electrodes were bilaterally implanted into one of the three brain sites. [18F]-fluoro-2-deoxy-glucose-PET (18FDG-PET) and computed tomography (CT) scans were performed at the 7th (without DBS) and 9th day (with DBS) after surgery. Stimulation period matched tracer uptake period. Images were acquired with a small-animal PET-CT scanner. Differences in glucose uptake between groups were assessed with Statistical Parametric Mapping. Results DBS induced site-specific metabolic changes, although a common increased metabolic activity in the piriform cortex was found for the three brain targets. mPFC-DBS increased metabolic activity in the striatum, temporal and amygdala, and reduced it in the cerebellum, brainstem (BS) and periaqueductal gray matter (PAG). NAcc-DBS increased metabolic activity in the subiculum and olfactory bulb, and decreased it in the BS, PAG, septum and hypothalamus. DM-DBS increased metabolic activity in the striatum, NAcc and thalamus and decreased it in the temporal and cingulate cortex. Conclusions DBS induced significant changes in 18FDG uptake in brain regions associated with the basal ganglia-thalamo-cortical circuitry. Stimulation of mPFC, NAcc and DM induced different patterns of 18FDG uptake despite interacting with the same circuitries. This may have important implications to DBS research suggesting individualized target selection according to specific neural modulatory requirements.
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Affiliation(s)
- Marta Casquero-Veiga
- CIBER de Salud Mental (CIBERSAM), Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Ravit Hadar
- Department of Psychiatry and Psychotherapy, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Javier Pascau
- CIBER de Salud Mental (CIBERSAM), Madrid, Spain
- Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Spain
| | - Christine Winter
- Department of Psychiatry and Psychotherapy, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Manuel Desco
- CIBER de Salud Mental (CIBERSAM), Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
- Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Spain
- * E-mail:
| | - María Luisa Soto-Montenegro
- CIBER de Salud Mental (CIBERSAM), Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
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18
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Salami A, Wåhlin A, Kaboodvand N, Lundquist A, Nyberg L. Longitudinal Evidence for Dissociation of Anterior and Posterior MTL Resting-State Connectivity in Aging: Links to Perfusion and Memory. Cereb Cortex 2016; 26:3953-3963. [PMID: 27522073 PMCID: PMC5028008 DOI: 10.1093/cercor/bhw233] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 07/06/2016] [Indexed: 12/12/2022] Open
Abstract
Neuroimaging studies of spontaneous signal fluctuations as measured by resting-state functional magnetic resonance imaging have revealed age-related alterations in the functional architecture of brain networks. One such network is located in the medial temporal lobe (MTL), showing structural and functional variations along the anterior–posterior axis. Past cross-sectional studies of MTL functional connectivity (FC) have yielded discrepant findings, likely reflecting the fact that specific MTL subregions are differentially affected in aging. Here, using longitudinal resting-state data from 198 participants, we investigated 5-year changes in FC of the anterior and posterior MTL. We found an opposite pattern, such that the degree of FC within the anterior MTL declined after age 60, whereas elevated FC within the posterior MTL was observed along with attenuated posterior MTL-cortical connectivity. A significant negative change–change relation was observed between episodic-memory decline and elevated FC in the posterior MTL. Additional analyses revealed age-related cerebral blood flow (CBF) increases in posterior MTL at the follow-up session, along with a positive relation of elevated FC and CBF, suggesting that elevated FC is a metabolically demanding alteration. Collectively, our findings indicate that elevated FC in posterior MTL along with increased local perfusion is a sign of brain aging that underlie episodic-memory decline.
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Affiliation(s)
- Alireza Salami
- Umeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.,Department of Integrative Medical Biology, Physiology Section, Umeå University, S-901 87 Umeå, Sweden.,Aging Research Center, Karolinska Institutet and Stockholm University, SE-113 30, Stockholm, Sweden
| | - Anders Wåhlin
- Umeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.,Department of Radiation Sciences, Radiation Physics, Umeå University, S-901 87 Umeå, Sweden
| | - Neda Kaboodvand
- Umeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.,Aging Research Center, Karolinska Institutet and Stockholm University, SE-113 30, Stockholm, Sweden
| | - Anders Lundquist
- Umeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.,Department of Integrative Medical Biology, Physiology Section, Umeå University, S-901 87 Umeå, Sweden
| | - Lars Nyberg
- Umeå Center for Functional Brain Imaging, S-90187, Umeå, Sweden.,Department of Integrative Medical Biology, Physiology Section, Umeå University, S-901 87 Umeå, Sweden.,Department of Radiation Sciences, Diagnostic Radiology, Umeå University, S-901 87 Umeå, Sweden
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Palomera-Avalos V, Griñán-Ferré C, Puigoriol-Ilamola D, Camins A, Sanfeliu C, Canudas AM, Pallàs M. Resveratrol Protects SAMP8 Brain Under Metabolic Stress: Focus on Mitochondrial Function and Wnt Pathway. Mol Neurobiol 2016; 54:1661-1676. [PMID: 26873850 DOI: 10.1007/s12035-016-9770-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 02/01/2016] [Indexed: 01/06/2023]
Abstract
Metabolic stress induced by high-fat (HF) diet leads to cognitive dysfunction and aging, but the physiological mechanisms are not fully understood. Senescence-accelerated prone mouse (SAMP8) models were conducted under metabolic stress conditions by feeding HF for 15 weeks, and the preventive effect of resveratrol was studied. This dietary strategy demonstrates cognitive impairment in SAMP8-HF and significant preventive effect by resveratrol-treated animals. Hippocampal changes in the proteins involved in mitochondrial dynamics optic atrophy-1 protein (OPA1) and mitofusin 2 (MFN2) comprised a differential feature found in SAMP8-HF that was prevented by resveratrol. Electronic microscopy showed a larger mitochondria in SAMP8-HF + resveratrol (SAMP8-HF + RV) than in SAMP8-HF, indicating increases in fusion processes in resveratrol-treated mice. According to the mitochondrial morphology, significant increases in the I-NDUFB8, II-SDNB, III-UQCRC2, and V-ATPase complexes, in addition to that of voltage-dependent anion channel 1 (VDAC1)/porin, were found in resveratrol-treated animals with regard to SAMP8-HF, reaching control-animal levels. Moreover, tumor necrosis factor alpha (TNF-α) and interleukin (IL-6) were increased after HF, and resveratrol prevents its increase. Moreover, we found that the HF diet affected the Wnt pathway, as demonstrated by β-catenin inactivation and modification in the expression of several components of this pathway. Resveratrol induced strong activation of β-catenin. The metabolic stress rendered in the cognitive and cellular pathways altered in SAMP8 focus on different targets in order to act on preventing cognitive impairment in neurodegeneration, and resveratrol can offer therapeutic possibilities for preventive strategies in aging or neurodegenerative conditions.
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Affiliation(s)
- V Palomera-Avalos
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section) and Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII s/n, 08028, Barcelona, Spain
| | - C Griñán-Ferré
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section) and Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII s/n, 08028, Barcelona, Spain
| | - D Puigoriol-Ilamola
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section) and Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII s/n, 08028, Barcelona, Spain
| | - A Camins
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section) and Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII s/n, 08028, Barcelona, Spain
| | - C Sanfeliu
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), CSIC, and IDIBAPS, 08036, Barcelona, Spain
| | - A M Canudas
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section) and Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII s/n, 08028, Barcelona, Spain
| | - M Pallàs
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section) and Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII s/n, 08028, Barcelona, Spain. .,Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII s/n, 08028, Barcelona, Spain.
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