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Snytnikova O, Telegina D, Savina E, Tsentalovich Y, Kolosova N. Quantitative Metabolomic Analysis of the Rat Hippocampus: Effects of Age and of the Development of Alzheimer's Disease-Like Pathology. J Alzheimers Dis 2024; 99:S327-S344. [PMID: 37980669 DOI: 10.3233/jad-230706] [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: 11/21/2023]
Abstract
Background Alzheimer's disease (AD) is the most common type of dementia in the elderly. Incomplete knowledge about the pathogenesis of this disease determines the absence of medications for the treatment of AD today. Animal models can provide the necessary knowledge to understand the mechanisms of biochemical processes occurring in the body in health and disease. Objective To identify the most promising metabolomic predictors and biomarkers reflecting metabolic disorders in the development of AD signs. Methods High resolution 1H NMR spectroscopy was used for quantitative metabolomic profiling of the hippocampus of OXYS rats, an animal model of sporadic AD, which demonstrates key characteristics of this disease. Animals were examined during several key periods: 20 days group corresponds to the "preclinical" period preceding the development of AD signs, during their manifestation (3 months), and active progression (18 months). Wistar rats of the same age were used as control. Results Ranges of variation and mean concentrations were established for 59 brain metabolites. The main metabolic patterns during aging, which are involved in energy metabolism pathways and metabolic shifts of neurotransmitters, have been established. Of particular note is the significant increase of scyllo-inositol and decrease of hypotaurine in the hippocampus of OXYS rats as compared to Wistars for all studied age groups. Conclusions We suggest that the accumulation of scyllo-inositol and the reduction of hypotaurine in the brain, even at an early age, can be considered as predictors and potential biomarkers of the development of AD signs in OXYS rats and, probably, in humans.
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Affiliation(s)
- Olga Snytnikova
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Darya Telegina
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Ekaterina Savina
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Yuri Tsentalovich
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Nataliya Kolosova
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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2
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Chiang YK, Lin YS, Chen CY, Lirng JF, Yang YH, Lee WJ, Fuh JL. Different Splice Isoforms of Peripheral Triggering Receptor Expressed on Myeloid Cells 2 mRNA Expressions are Associated With Cognitive Decline in Mild Dementia Due to Alzheimer's Disease and Reflect Central Neuroinflammation. Am J Alzheimers Dis Other Demen 2024; 39:15333175241243183. [PMID: 38592304 PMCID: PMC11005501 DOI: 10.1177/15333175241243183] [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] [Indexed: 04/10/2024]
Abstract
Triggering receptor expressed on myeloid cells 2 (TREM2) is upregulated in activated microglia and may be related to cognitive decline in patients with Alzheimer's disease (AD). There is conflicting evidence regarding the association of peripheral TREM2 mRNA expression/soluble TREM2 (the extracellular domain of TREM2) with cognitive function/neuroinflammation in patients with AD. Herein, we studied the TREM2 and TREM2alt mRNA expression and their association with the cognitive performance in subjects with mild dementia due to AD and healthy controls. In a subgroup of patients with AD, magnetic resonance spectroscopy was used to measure the myo-inositol level in the posterior cingulate cortex, a surrogate marker for neuroinflammation. The results showed that increased TREM2 and TREM2alt mRNA expression is associated with AD pathogenesis at the mild dementia stage, thereby serving as a potential biomarker for early symptomatic stage of AD. TREM2 may exert protective effects on both cognition and central neuroinflammation.
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Affiliation(s)
- Yi-Kuan Chiang
- Division of General Neurology, Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yung-Shuan Lin
- Division of General Neurology, Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chun-Yu Chen
- Division of General Neurology, Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jiing-Feng Lirng
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yu-Hsiu Yang
- Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan
- Dementia Center, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Wei-Ju Lee
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan
- Dementia Center, Taichung Veterans General Hospital, Taichung, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Jong-Ling Fuh
- Division of General Neurology, Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
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3
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Fanton S, Menezes J, Krock E, Sandström A, Tour J, Sandor K, Jurczak A, Hunt M, Baharpoor A, Kadetoff D, Jensen KB, Fransson P, Ellerbrock I, Sitnikov R, Svensson CI, Kosek E. Anti-satellite glia cell IgG antibodies in fibromyalgia patients are related to symptom severity and to metabolite concentrations in thalamus and rostral anterior cingulate cortex. Brain Behav Immun 2023; 114:371-382. [PMID: 37683961 DOI: 10.1016/j.bbi.2023.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023] Open
Abstract
Recent translational work has shown that fibromyalgia might be an autoimmune condition with pathogenic mechanisms mediated by a peripheral, pain-inducing action of immunoglobulin G (IgG) antibodies binding to satellite glia cells (SGC) in the dorsal root ganglia. A first clinical assessment of the postulated autoimmunity showed that fibromyalgia subjects (FMS) had elevated levels of antibodies against SGC (termed anti-SGC IgG) compared to healthy controls and that anti-SGC IgG were associated with a more severe disease status. The overarching aim of the current study was to determine whether the role of anti-SGC IgG in driving pain is exclusively through peripheral mechanisms, as indirectly shown so far, or could be attributed also to central mechanisms. To this end, we wanted to first confirm, in a larger cohort of FMS, the relation between anti-SGC IgG and pain-related clinical measures. Secondly, we explored the associations of these autoantibodies with brain metabolite concentrations (assessed via magnetic resonance spectroscopy, MRS) and pressure-evoked cerebral pain processing (assessed via functional magnetic resonance imaging, fMRI) in FMS. Proton MRS was performed in the thalamus and rostral anterior cingulate cortex (rACC) of FMS and concentrations of a wide spectrum of metabolites were assessed. During fMRI, FMS received individually calibrated painful pressure stimuli corresponding to low and high pain intensities. Our results confirmed a positive correlation between anti-SGC IgG and clinical measures assessing condition severity. Additionally, FMS with high anti-SGC IgG levels had higher pain intensity and a worse disease status than FMS with low anti-SGC IgG levels. Further, anti-SGC IgG levels negatively correlated with metabolites such as scyllo-inositol in thalamus and rACC as well as with total choline and macromolecule 12 in thalamus, thus linking anti-SGC IgG levels to the concentration of metabolites in the brain of FMS. However, anti-SGC IgG levels in FMS were not associated with the sensitivity to pressure pain or the cerebral processing of evoked pressure pain. Taken together, our results suggest that anti-SGC IgG might be clinically relevant for spontaneous, non-evoked pain. Our current and previous translational and clinical findings could provide a rationale to try new antibody-related treatments in FMS.
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Affiliation(s)
- Silvia Fanton
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden.
| | - Joana Menezes
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Emerson Krock
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Faculty of Dental Medicine and Oral Health Sciences, Alan Edwards Centre for Research on Pain, McGill University, Montreal, Canada
| | - Angelica Sandström
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden; Department of Radiology, Massachusetts General Hospital, A.A. Martinos Center for Biomedical Imaging, Harvard Medical School, Boston, MA, USA
| | - Jeanette Tour
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Katalin Sandor
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Alexandra Jurczak
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Matthew Hunt
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Azar Baharpoor
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Diana Kadetoff
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden; Stockholm Spine Center, Löwenströmska Hospital, Upplands Väsby, Sweden
| | - Karin B Jensen
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Peter Fransson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Isabel Ellerbrock
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Rouslan Sitnikov
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden; MRI Research Center, Karolinska University Hospital, Stockholm, Sweden
| | - Camilla I Svensson
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Eva Kosek
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden; Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
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4
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Deelchand DK, Eberly LE, McCarten JR, Hemmy LS, Auerbach EJ, Marjańska M. Scyllo-inositol: Transverse relaxation time constant at 3 T and concentration changes associated with aging and alcohol use. NMR IN BIOMEDICINE 2023; 36:e4929. [PMID: 36940048 DOI: 10.1002/nbm.4929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 12/14/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
The goals of this study were to measure the apparent transverse relaxation time constant, T2 , of scyllo-inositol (sIns) in young and older healthy adults' brains and to investigate the effect of alcohol usage on sIns in young and older healthy adults' brains, using proton magnetic resonance spectroscopy (MRS) at 3 T. Twenty-nine young adults (age 21 ± 1 years) and 24 older adults (age 74 ± 3 years) participated in this study. MRS data were acquired from two brain regions (the occipital cortex and posterior cingulate cortex) at 3 T. The T2 of sIns was measured using a localization by adiabatic selective refocusing (LASER) sequence at various echo times, while the sIns concentrations were measured using a short-echo-time stimulated echo acquisition mode (STEAM) sequence. A trend towards lower T2 relaxation values of sIns in older adults was observed, although these were not significant. sIns concentration was higher with age in both brain regions and was significantly higher in the young when considering alcohol consumption of more than two drinks per week. This study shows that differences in sIns can be found in two distinct regions of the brain across two age groups, potentially reflecting normal aging. In addition, it is important to take into account alcohol consumption when reporting the sIns level in the brain.
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Affiliation(s)
- Dinesh K Deelchand
- Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, USA
| | - Lynn E Eberly
- Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, USA
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, USA
| | - J Riley McCarten
- Geriatric Research, Education and Clinical Center, Veterans Affairs Health Care System, Minneapolis, MN, USA
- Department of Neurology, University of Minnesota, Minneapolis, MN, USA
| | - Laura S Hemmy
- Geriatric Research, Education and Clinical Center, Veterans Affairs Health Care System, Minneapolis, MN, USA
- Department of Psychiatry, University of Minnesota, Minneapolis, MN, USA
| | - Edward J Auerbach
- Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, USA
| | - Małgorzata Marjańska
- Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, USA
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5
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Song T, Song X, Zhu C, Patrick R, Skurla M, Santangelo I, Green M, Harper D, Ren B, Forester BP, Öngür D, Du F. Mitochondrial dysfunction, oxidative stress, neuroinflammation, and metabolic alterations in the progression of Alzheimer's disease: A meta-analysis of in vivo magnetic resonance spectroscopy studies. Ageing Res Rev 2021; 72:101503. [PMID: 34751136 PMCID: PMC8662951 DOI: 10.1016/j.arr.2021.101503] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 12/13/2022]
Abstract
Accumulating evidence demonstrates that metabolic changes in the brain associated with neuroinflammation, oxidative stress, and mitochondrial dysfunction play an important role in the pathophysiology of mild cognitive impairment (MCI) and Alzheimer's disease (AD). However, the neural signatures associated with these metabolic alterations and underlying molecular mechanisms are still elusive. Accordingly, we reviewed the literature on in vivo human brain 1H and 31P-MRS studies and use meta-analyses to identify patterns of brain metabolic alterations in MCI and AD. 40 and 39 studies on MCI and AD, respectively, were classified according to brain regions. Our results indicate decreased N-acetyl aspartate and creatine but increased myo-inositol levels in both MCI and AD, decreased glutathione level in MCI as well as disrupted energy metabolism in AD. In addition, the hippocampus shows the strongest alterations in most of these metabolites. This meta-analysis also illustrates progressive metabolite alterations from MCI to AD. Taken together, it suggests that 1) neuroinflammation and oxidative stress may occur in the early stages of AD, and likely precede neuron loss in its progression; 2) the hippocampus is a sensitive region of interest for early diagnosis and monitoring the response of interventions; 3) targeting bioenergetics associated with neuroinflammation/oxidative stress is a promising approach for treating AD.
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Affiliation(s)
- Tao Song
- Psychotic Disorders Division, McLean Hospital, 02478, USA; McLean Imaging Center, McLean Hospital, 02478, USA; Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Xiaopeng Song
- Psychotic Disorders Division, McLean Hospital, 02478, USA; McLean Imaging Center, McLean Hospital, 02478, USA; Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Chenyawen Zhu
- Psychotic Disorders Division, McLean Hospital, 02478, USA; McLean Imaging Center, McLean Hospital, 02478, USA
| | - Regan Patrick
- Division of Geriatric Psychiatry, McLean Hospital, 02478, USA; Department of Neuropsychology, McLean Hospital, 02478, USA; Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Miranda Skurla
- Division of Geriatric Psychiatry, McLean Hospital, 02478, USA
| | | | - Morgan Green
- Division of Geriatric Psychiatry, McLean Hospital, 02478, USA
| | - David Harper
- Division of Geriatric Psychiatry, McLean Hospital, 02478, USA; Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Boyu Ren
- Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Brent P Forester
- Division of Geriatric Psychiatry, McLean Hospital, 02478, USA; Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Dost Öngür
- Psychotic Disorders Division, McLean Hospital, 02478, USA; Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Fei Du
- Psychotic Disorders Division, McLean Hospital, 02478, USA; McLean Imaging Center, McLean Hospital, 02478, USA; Harvard Medical School, Boston, Massachusetts 02115, USA.
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6
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Brief mindfulness training increased glutamate metabolism in the anterior cingulate cortex. Neuroreport 2020; 31:1142-1145. [PMID: 32991525 DOI: 10.1097/wnr.0000000000001527] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Mindfulness meditation has become a promising intervention for promoting health and well-being. Neuroimaging studies have shown its beneficial effects on brain functional activity, connectivity, and structures following months to years of practice. A series of randomized controlled trials indicated that one form of mindfulness meditation, the integrative body-mind training (IBMT) induces brain functional and structural changes in brain regions related to self-control networks such as the anterior cingulate cortex (ACC) after 2-10 h of practice. However, whether IBMT could change brain metabolism in the ACC remains unexplored. Utilizing a noninvasive 3T proton magnetic resonance spectroscopy, our results showed a significant increase in glutamate metabolism in the rostral ACC following 10 h of IBMT, suggesting that brief training not only increases ACC activity and structure, but also induces neurochemical changes in regions of the self-control networks. To our knowledge, this is the first study demonstrating the positive effects on brain metabolism in the ACC following brief intervention, suggesting a potential mechanism and implications of mindfulness meditation in ameliorating disorders such as addiction, depression and schizophrenia, which often involve the dysfunction of self-control networks and glutamatergic system (i.e. lower glutamate metabolism).
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Gupta K, Vuckovic I, Zhang S, Xiong Y, Carlson BL, Jacobs J, Olson I, Petterson XM, Macura SI, Sarkaria J, Burns TC. Radiation Induced Metabolic Alterations Associate With Tumor Aggressiveness and Poor Outcome in Glioblastoma. Front Oncol 2020; 10:535. [PMID: 32432031 PMCID: PMC7214818 DOI: 10.3389/fonc.2020.00535] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/25/2020] [Indexed: 12/17/2022] Open
Abstract
Glioblastoma (GBM) is uniformly fatal with a 1-year median survival, despite best available treatment, including radiotherapy (RT). Impacts of prior RT on tumor recurrence are poorly understood but may increase tumor aggressiveness. Metabolic changes have been investigated in radiation-induced brain injury; however, the tumor-promoting effect following prior radiation is lacking. Since RT is vital to GBM management, we quantified tumor-promoting effects of prior RT on patient-derived intracranial GBM xenografts and characterized metabolic alterations associated with the protumorigenic microenvironment. Human xenografts (GBM143) were implanted into nude mice 24 hrs following 20 Gy cranial radiation vs. sham animals. Tumors in pre-radiated mice were more proliferative and more infiltrative, yielding faster mortality (p < 0.0001). Histologic evaluation of tumor associated macrophage/microglia (TAMs) revealed cells with a more fully activated ameboid morphology in pre-radiated animals. Microdialyzates from radiated brain at the margin of tumor infiltration contralateral to the site of implantation were analyzed by unsupervised liquid chromatography-mass spectrometry (LC-MS). In pre-radiated animals, metabolites known to be associated with tumor progression (i.e., modified nucleotides and polyols) were identified. Whole-tissue metabolomic analysis of pre-radiated brain microenvironment for metabolic alterations in a separate cohort of nude mice using 1H-NMR revealed a significant decrease in levels of antioxidants (glutathione (GSH) and ascorbate (ASC)), NAD+, Tricarboxylic acid cycle (TCA) intermediates, and rise in energy carriers (ATP, GTP). GSH and ASC showed highest Variable Importance on Projection prediction (VIPpred) (1.65) in Orthogonal Partial least square Discriminant Analysis (OPLS-DA); Ascorbate catabolism was identified by GC-MS. To assess longevity of radiation effects, we compared survival with implantation occurring 2 months vs. 24 hrs following radiation, finding worse survival in animals implanted at 2 months. These radiation-induced alterations are consistent with a chronic disease-like microenvironment characterized by reduced levels of antioxidants and NAD+, and elevated extracellular ATP and GTP serving as chemoattractants, promoting cell motility and vesicular secretion with decreased levels of GSH and ASC exacerbating oxidative stress. Taken together, these data suggest IR induces tumor-permissive changes in the microenvironment with metabolomic alterations that may facilitate tumor aggressiveness with important implications for recurrent glioblastoma. Harnessing these metabolomic insights may provide opportunities to attenuate RT-associated aggressiveness of recurrent GBM.
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Affiliation(s)
- Kshama Gupta
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
| | - Ivan Vuckovic
- Metabolomics Core Mayo Clinic, Rochester, MN, United States
| | - Song Zhang
- Metabolomics Core Mayo Clinic, Rochester, MN, United States
| | - Yuning Xiong
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
| | - Brett L Carlson
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| | - Joshua Jacobs
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
| | - Ian Olson
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
| | | | - Slobodan I Macura
- Metabolomics Core Mayo Clinic, Rochester, MN, United States.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
| | - Jann Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| | - Terry C Burns
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
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Kaufman MJ, Kanayama G, Hudson JI, Pope HG. Supraphysiologic-dose anabolic-androgenic steroid use: A risk factor for dementia? Neurosci Biobehav Rev 2019; 100:180-207. [PMID: 30817935 PMCID: PMC6451684 DOI: 10.1016/j.neubiorev.2019.02.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/13/2019] [Accepted: 02/17/2019] [Indexed: 02/06/2023]
Abstract
Supraphysiologic-dose anabolic-androgenic steroid (AAS) use is associated with physiologic, cognitive, and brain abnormalities similar to those found in people at risk for developing Alzheimer's Disease and its related dementias (AD/ADRD), which are associated with high brain β-amyloid (Aβ) and hyperphosphorylated tau (tau-P) protein levels. Supraphysiologic-dose AAS induces androgen abnormalities and excess oxidative stress, which have been linked to increased and decreased expression or activity of proteins that synthesize and eliminate, respectively, Aβ and tau-P. Aβ and tau-P accumulation may begin soon after initiating supraphysiologic-dose AAS use, which typically occurs in the early 20s, and their accumulation may be accelerated by other psychoactive substance use, which is common among non-medical AAS users. Accordingly, the widespread use of supraphysiologic-dose AAS may increase the numbers of people who develop dementia. Early diagnosis and correction of sex-steroid level abnormalities and excess oxidative stress could attenuate risk for developing AD/ADRD in supraphysiologic-dose AAS users, in people with other substance use disorders, and in people with low sex-steroid levels or excess oxidative stress associated with aging.
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Affiliation(s)
- Marc J Kaufman
- McLean Imaging Center, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA.
| | - Gen Kanayama
- Biological Psychiatry Laboratory, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA
| | - James I Hudson
- Biological Psychiatry Laboratory, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA
| | - Harrison G Pope
- Biological Psychiatry Laboratory, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA
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Gonzalez-Riano C, León-Espinosa G, Regalado-Reyes M, García A, DeFelipe J, Barbas C. Metabolomic Study of Hibernating Syrian Hamster Brains: In Search of Neuroprotective Agents. J Proteome Res 2019; 18:1175-1190. [DOI: 10.1021/acs.jproteome.8b00816] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Gonzalo León-Espinosa
- Laboratorio Cajal de Circuitos Corticales (CTB), Universidad Politécnica de Madrid, Campus Montegancedo, 28223 Pozuelo de Alarcón, Madrid, Spain
- Instituto Cajal (CSIC), Avenida Doctor Arce 37, 28002 Madrid, Spain
| | - Mamen Regalado-Reyes
- Laboratorio Cajal de Circuitos Corticales (CTB), Universidad Politécnica de Madrid, Campus Montegancedo, 28223 Pozuelo de Alarcón, Madrid, Spain
| | | | - Javier DeFelipe
- Laboratorio Cajal de Circuitos Corticales (CTB), Universidad Politécnica de Madrid, Campus Montegancedo, 28223 Pozuelo de Alarcón, Madrid, Spain
- Instituto Cajal (CSIC), Avenida Doctor Arce 37, 28002 Madrid, Spain
- CIBERNED, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas, Calle de Valderrebollo, 5, 28031 Madrid, Spain
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10
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Scavuzzo CJ, Moulton CJ, Larsen RJ. The use of magnetic resonance spectroscopy for assessing the effect of diet on cognition. Nutr Neurosci 2016; 21:1-15. [DOI: 10.1080/1028415x.2016.1218191] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Claire J. Scavuzzo
- Neuroscience Program, University of Illinois at Urbana-Champaign, USA
- Department of Psychology, University of Alberta, Edmonton, Canada
| | | | - Ryan J. Larsen
- Biomedical Imaging Center, Beckman Institute, University of Illinois at Urbana-Champaign, USA
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11
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Wang H, Tan L, Wang HF, Liu Y, Yin RH, Wang WY, Chang XL, Jiang T, Yu JT. Magnetic Resonance Spectroscopy in Alzheimer's Disease: Systematic Review and Meta-Analysis. J Alzheimers Dis 2016; 46:1049-70. [PMID: 26402632 DOI: 10.3233/jad-143225] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND The application of non-invasive proton magnetic resonance spectroscopy (1H-MRS) could potentially identify changes in cerebral metabolites in the patients with Alzheimer's disease (AD). However, whether these metabolites can serve as biomarkers for the diagnosis of AD remains unclear. OBJECTIVE Using meta-analysis, we aimed to investigate the patterns of cerebral metabolite changes in several cerebral regions that are strongly associated with cognitive decline in AD patients. METHODS Using Hedges' g effect size, a systematic search was performed in PubMed, Cochrane Library, Ovid, Embase, and EBSCO, and 38 studies were integrated into the final meta-analysis. RESULTS According to the observational studies, N-acetyl aspartate (NAA) in AD patients was significantly reduced in the posterior cingulate (PC) (effect size (ES) =-0.924, p < 0.005) and bilateral hippocampus (left hippocampus: ES =-1.329, p < 0.005; right hippocampus: ES =-1.287, p < 0.005). NAA/Cr (creatine) ratio decreased markedly in the PC (ES =-1.052, p < 0.005). Simultaneously, significant elevated myo-inositol (mI)/Cr ratio was found not only in the PC but also in the parietal gray matter. For lack of sufficient data, we failed to elucidate the efficacy of pharmacological interventions with the metabolites changes. CONCLUSION The available data indicates that NAA, mI, and the NAA/Cr ratio might be potential biomarkers of brain dysfunction in AD subjects. Choline (Cho)/Cr and mI/NAA changes might also contribute toward the diagnostic process. Thus, large, well-designed studies correlated with cerebral metabolism are needed to better estimate the cerebral extent of alterations in brain metabolite levels in AD patients.
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Affiliation(s)
- Hui Wang
- Department of Neurology, Qingdao Municipal Hospital, Dalian Medical University, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Dalian Medical University, China.,Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China.,Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, China
| | - Hui-Fu Wang
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Ying Liu
- Department of Neurology, Qingdao Municipal Hospital, Dalian Medical University, China
| | - Rui-Hua Yin
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Wen-Ying Wang
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Xiao-Long Chang
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Teng Jiang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Jin-Tai Yu
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China.,Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, China.,Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Memory and Aging Center, Deparment of Neurology, University of California, San Francisco, USA
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12
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Fauvelle F, Boccard J, Cavarec F, Depaulis A, Deransart C. Assessing Susceptibility to Epilepsy in Three Rat Strains Using Brain Metabolic Profiling Based on HRMAS NMR Spectroscopy and Chemometrics. J Proteome Res 2015; 14:2177-89. [PMID: 25761974 DOI: 10.1021/pr501309b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The possibility that a metabolomic approach can inform about the pathophysiology of a given form of epilepsy was addressed. Using chemometric analyses of HRMAS NMR data, we compared several brain structures in three rat strains with different susceptibilities to absence epilepsy: Genetic Absence Epilepsy Rats from Strasbourg (GAERS), Non Epileptic Control rats (NEC), and Wistar rats. Two ages were investigated: 14 days postnatal (P14) before the onset of seizures and 5 month old adults with fully developed seizures (Adults). The relative concentrations of 19 metabolites were assessed using (1)H HRMAS NMR experiments. Univariate and multivariate analyses including multiblock models were used to identify the most discriminant metabolites. A strain-dependent evolution of glutamate, glutamine, scyllo-inositol, alanine, and glutathione was highlighted during cerebral maturation. In Adults, data from somatosensory and motor cortices allowed discrimination between GAERS and NEC rats with higher levels of scyllo-inositol, taurine, and phosphoethanolamine in NEC. This epileptic metabolic phenotype was in accordance with current pathophysiological hypothesis of absence epilepsy (i.e., seizure-generating and control networks) and putative resistance of NEC rats and was observed before seizure onset. This methodology could be very efficient in a clinical context.
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Affiliation(s)
- Florence Fauvelle
- †IRBA, 91223 Bretigny sur Orgne, France.,‡Univ. Grenoble Alpes, IRMaGe MRI facility, F-38000 Grenoble, France.,ΨCNRS, UIMS 3552, F-38000 Grenoble, France.,¶INSERM, US17, F-38000 Grenoble, France.,§INSERM U836, F-38042 Grenoble, France
| | - Julien Boccard
- #School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CH-1211 Geneva, Switzerland
| | - Fanny Cavarec
- §INSERM U836, F-38042 Grenoble, France.,∥Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France
| | - Antoine Depaulis
- §INSERM U836, F-38042 Grenoble, France.,∥Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France.,⊥Centre Hospitalier Universitaire, F-38000 Grenoble, France
| | - Colin Deransart
- §INSERM U836, F-38042 Grenoble, France.,∥Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France.,⊥Centre Hospitalier Universitaire, F-38000 Grenoble, France
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13
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Lamour SD, Veselkov KA, Posma JM, Giraud E, Rogers ME, Croft S, Marchesi JR, Holmes E, Seifert K, Saric J. Metabolic, Immune, and Gut Microbial Signals Mount a Systems Response to Leishmania major Infection. J Proteome Res 2014; 14:318-29. [DOI: 10.1021/pr5008202] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sabrina D. Lamour
- Division
of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Kirill A. Veselkov
- Division
of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Joram M. Posma
- Division
of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Emilie Giraud
- Department of Immunology and Infection, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, United Kingdom
| | - Matthew E. Rogers
- Department of Disease Control, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, United Kingdom
| | - Simon Croft
- Department of Immunology and Infection, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, United Kingdom
| | - Julian R. Marchesi
- Cardiff
School of Biosciences, Division of Microbiology, Cardiff University, Museum Avenue, Cardiff, CF10 3AT, United Kingdom
- Centre
for Digestive and Gut Health, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom
| | - Elaine Holmes
- Division
of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Karin Seifert
- Department of Immunology and Infection, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, United Kingdom
| | - Jasmina Saric
- Division
of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
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14
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Zhang N, Song X, Bartha R, Beyea S, D’Arcy R, Zhang Y, Rockwood K. Advances in high-field magnetic resonance spectroscopy in Alzheimer's disease. Curr Alzheimer Res 2014; 11:367-88. [PMID: 24597505 PMCID: PMC4108086 DOI: 10.2174/1567205011666140302200312] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 02/21/2014] [Accepted: 02/25/2014] [Indexed: 12/20/2022]
Abstract
Alzheimer's disease (AD) affects several important molecules in brain metabolism. The resulting neurochemical changes can be quantified non-invasively in localized brain regions using in vivo single-voxel proton magnetic resonance spectroscopy (SV 1H MRS). Although the often heralded diagnostic potential of MRS in AD largely remains unfulfilled, more recent use of high magnetic fields has led to significantly improved signal-to-noise ratios and spectral resolutions, thereby allowing clinical applications with increased measurement reliability. The present article provides a comprehensive review of SV 1H MRS studies on AD at high magnetic fields (3.0 Tesla and above). This review suggests that patterned regional differences and longitudinal alterations in several neurometabolites are associated with clinically established AD. Changes in multiple metabolites are identifiable even at early stages of AD development. By combining information of neurochemicals in different brain regions revealing either pathological or compensatory changes, high field MRS can be evaluated in AD diagnosis and in the detection of treatment effects. To achieve this, standardization of data acquisition and analytical approaches is needed.
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Affiliation(s)
- Ningnannan Zhang
- National Research Council Canada, Institute for Biodiagnostics – Atlantic, Halifax, Nova Scotia, Canada
- Department
of Radiology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Xiaowei Song
- National Research Council Canada, Institute for Biodiagnostics – Atlantic, Halifax, Nova Scotia, Canada
- Division of Geriatric Medicine,
Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
- Neuroimaging Research Laboratory,
Biomedical Translational Imaging Centre, Halifax, Nova Scotia, Canada
| | - Robert Bartha
- Centre for Functional and Metabolic
Mapping, Robarts Research Institute, University of Western Ontario, London, Ontario, Canada
- Department of
Medical Biophysics, University of Western Ontario, London, Ontario, Canada
| | - Steven Beyea
- National Research Council Canada, Institute for Biodiagnostics – Atlantic, Halifax, Nova Scotia, Canada
- Neuroimaging Research Laboratory,
Biomedical Translational Imaging Centre, Halifax, Nova Scotia, Canada
- Department of Physics, Dalhousie
University, Halifax, Nova Scotia, Canada
| | - Ryan D’Arcy
- National Research Council Canada, Institute for Biodiagnostics – Atlantic, Halifax, Nova Scotia, Canada
- Department of Applied Science, Simon Fraser University, Surrey, British
Columbia, Canada
- Surrey Memorial Hospital, Fraser Health Foundation Innovation, Surrey, British Columbia,
Canada
| | - Yunting Zhang
- Department
of Radiology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Kenneth Rockwood
- Division of Geriatric Medicine,
Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
- Centre for Health Care of the Elderly, Queen Elizabeth II Health Sciences Centre, Halifax, Canada
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15
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Combination therapy in a transgenic model of Alzheimer's disease. Exp Neurol 2013; 250:228-238. [PMID: 24120437 DOI: 10.1016/j.expneurol.2013.10.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 09/16/2013] [Accepted: 10/02/2013] [Indexed: 12/31/2022]
Abstract
The pathological accumulation of the β-amyloid protein (Aβ) has been closely associated with synaptic loss and neurotoxicity contributing to cognitive dysfunction in Alzheimer's disease (AD). Oligomers of Aβ42 appear to be the most neurotoxic form. Two of the most promising attempts to reduce Aβ accumulation have been with scyllo-inositol, an inositol steroisomer, that stabilizes Aβ42 peptide and prevents it from progressing to oligomers and fibrils and R-flurbiprofen, a purified enantiomer of the classical racemic non-steroidal anti-inflammatory drugs (NSAID), flurbiprofen, that retains the ability to specifically lower Aβ42. In the present study we evaluated the effects of scyllo-inositol and the combination treatment of scyllo-inositol+R-flurbiprofen on amyloid pathology and hippocampal-dependent memory function in 5XFAD mice, a model of Aβ pathology characterized by an enormous production of Aβ42. Our expectations were that the combination treatment of scyllo-inositol+R-flurbiprofen would have an additive effect in preventing Aβ accumulation and that cognition would be improved. Mice treated with scyllo-inositol exhibit 41 and 35% reduction in the deposition of the amyloid plaques stained by antibody against Aβ42 and Aβ40 respectively. Scyllo-inositol was not more effective when combined with R-flurbiprofen for the measures tested. Scyllo-inositol treated mice performed significantly better at the radial arm water maze (RAWM) task than untreated and scyllo-inositol+R-flurbiprofen treated mice.
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16
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Magnetic resonance spectroscopy in mild cognitive impairment: systematic review and meta-analysis. Neurosci Biobehav Rev 2013; 37:2571-86. [PMID: 23969177 DOI: 10.1016/j.neubiorev.2013.08.004] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 07/17/2013] [Accepted: 08/11/2013] [Indexed: 01/28/2023]
Abstract
Research using proton magnetic resonance spectroscopy (MRS) can potentially elucidate metabolite changes representing early degeneration in Mild Cognitive Impairment (MCI), an early stage of dementia. We integrated the published literature using meta-analysis to identify patterns of metabolite changes in MCI. 29 MRS studies (with a total of 607 MCI patients and 862 healthy controls) were classified according to brain regions. Hedges' g was used as effect size in a random effects model. N-Acetyl Aspartate (NAA) measures were consistently reduced in posterior cingulate (PC), hippocampus, and the paratrigonal white matter (PWM). Creatine (Cr) concentration was reduced in the hippocampus and PWM. Choline (Cho) concentration was reduced in the hippocampus while Cho/Cr ratio was raised in the PC. Myo-inositol (mI) concentration was raised in the PC and mI/Cr ratio was raised in the hippocampus. NAA/mI ratio was reduced in the PC. NAA may be the most reliable marker of brain dysfunction in MCI though mI, Cho, and Cr may also contribute towards this.
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17
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Burhan AM, Bartha R, Bocti C, Borrie M, Laforce R, Rosa-Neto P, Soucy JP. Role of emerging neuroimaging modalities in patients with cognitive impairment: a review from the Canadian Consensus Conference on the Diagnosis and Treatment of Dementia 2012. ALZHEIMERS RESEARCH & THERAPY 2013; 5:S4. [PMID: 24565285 PMCID: PMC3981649 DOI: 10.1186/alzrt200] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The Fourth Canadian Consensus Conference on the Diagnosis and Treatment of Dementia (CCCDTD4) was held 3 to 4 May 2012 in Montreal, Quebec, Canada. A group of neuroimaging experts were assigned the task of reviewing and summarizing the literature on clinical and research applications of different neuroimaging modalities in cognitive disorders. This paper summarizes the literature and recommendations made to the conference regarding the role of several emerging neuroimaging modalities in cognitive disorders. Functional magnetic resonance imaging (MRI), magnetic resonance spectroscopy, and diffusion tensor imaging are discussed in detail within this paper. Other emergent neuroimaging modalities such as positron emission tomography with novel ligands, high-field MRI, arterial spin labeling MRI and noncerebral blood flow single-photon emission computerized tomography are only discussed briefly. Neuroimaging modalities that were recommended at the CCCDTD4 for both clinical and research applications such as amyloid and flurodeoxyglucose positron emission tomography, computerized tomography and structural MRI are discussed in a separate paper by the same authors. A literature search was conducted using the PubMed database including articles in English that involved human subjects and covered the period from the last CCCDTD publication (CCCDTD3; January 2006) until April 2012. Search terms included the name of the specific modality, dementia, Alzheimer's disease, and mild cognitive impairment. A separate search used the same parameters but was restricted to review articles to identify recent evidence-based reviews. Case studies and small case series were not included. Papers representing current evidence were selected, reviewed, and summarized, and the results were presented at the CCCDTD4 meeting with recommendations regarding the utility of various neuroimaging modalities in cognitive disorders. The evidence was graded according to the Oxford Centre for Evidence Based Medicine guidelines. Due to the limitations of current evidence, the neuroimaging modalities discussed in this paper were not recommended for clinical investigation of patients presenting with cognitive impairment. However, in the research setting, each modality provides a unique contribution to the understanding of basic mechanisms and neuropathological markers of cognitive disorders, to the identification of markers for early detection and for the risk of conversion to dementia in the at-risk populations, to the differentiation between different types of cognitive disorders, and to the identification of treatment targets and indicators of treatment response. In conclusion, for all of the neuroimaging modalities discussed in this paper, further studies are needed to establish diagnostic utility such as validity, reliability, and predictive and prognostic value. More multicenter studies are therefore needed with standardized image acquisition, experimental protocols, definition of the clinical population studied, larger numbers of participants, and longer duration of follow-up to allow generalizability of the results to the individual patient.
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18
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Mining the brain metabolome to understand behavioural disruptions induced in mouse fed Hypochoeris radicata (L.), a neurotoxic plant for horse. Neurotoxicology 2013; 38:74-83. [PMID: 23811200 DOI: 10.1016/j.neuro.2013.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/19/2013] [Accepted: 06/19/2013] [Indexed: 11/20/2022]
Abstract
Mining the brain metabolome to understand behavioural disruptions induced in mouse fed Hypochoeris radicata (L.), a neurotoxic plant for horse. C57BL/6J mice orally exposed to 9% H. radicata (HR) are metabolically competent laboratory animals which can be used as model of Australian stringhalt, a neurological horse disease induced by HR ingestion. So, the present study was conducted to assess the brain metabolome and the behavioural performances of mice fed with a 9%-HR-based diet for 21 days. By the end of the period of exposure, mice were investigated for motor activity and coordination, anxiety level, learning and memory performances, social behaviour and rewarding properties of for the plant. Thus, the animals were sacrificed and the brain metabolome was studied using (1)H NMR spectroscopy. HR-exposed mice displayed a motor hyperactivity in several tasks, a less resignation in the forced swimming test, and paradigm place preference for the plant. A bootstrap-based regularized canonical analysis performed on merged behavioural and metabolic datasets showed a clear relationship in HR-treated mice between an increase in cerebral scyllo-inositol, an increased motor activity, and seemingly rewarding properties of HR. These results underlie the interest of such a dual approach to characterize functional end-points of a pathophysiological model of the Australian stringhalt in equine species.
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19
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Chang L, Munsaka SM, Kraft-Terry S, Ernst T. Magnetic resonance spectroscopy to assess neuroinflammation and neuropathic pain. J Neuroimmune Pharmacol 2013; 8:576-93. [PMID: 23666436 DOI: 10.1007/s11481-013-9460-x] [Citation(s) in RCA: 203] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 04/14/2013] [Indexed: 02/07/2023]
Abstract
Proton magnetic resonance spectroscopy ((1)H MRS) has been applied to numerous clinical studies, especially for neurological disorders. This technique can non-invasively evaluate brain metabolites and neurochemicals in selected brain regions and is particularly useful for assessing neuroinflammatory disorders. Neurometabolites assessed with MRS include the neuronal markers N-acetylaspartate (NAA) and glutamate (Glu), as well as the glial marker myo-inositol (MI). Therefore, the concentrations of these metabolites typically correspond to disease severity and often correlate well with clinical variables in the various brain disorders. Neuroinflammation with activated astrocytes and microglia in brain disorders are often associated with elevated MI, and to a lesser extent elevated total creatine (tCr) and choline containing compounds (Cho), which are found in higher concentrations in glia than neurons, while neuronal injury is indicated by lower than normal levels of NAA and Glu. This review summarizes the neurometabolite abnormalities found in MRS studies performed in patients with neuroinflammatory disorders or neuropathic pain, which also may be associated with neuroinflammation. These brain disorders include multiple sclerosis, neuroviral infections (including Human Immunodeficiency virus and Hepatitis C), degenerative brain disorders (including Alzheimer's disease and Parkinson's disease), stimulant abuse (including methamphetamine and cocaine) as well as several chronic pain syndromes.
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Affiliation(s)
- Linda Chang
- Department of Medicine, John A. Burns School of Medicine, University of Hawai'i at Manoa, Neuroscience and Magnetic Resonance Research Program, The Queen's Medical Center, 1356 Lusitana Street, UH Tower 7th Floor, Honolulu, HI 96813, USA.
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20
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Liang E, Garzone P, Cedarbaum JM, Koller M, Tran T, Xu V, Ross B, Jhee SS, Ereshefsky L, Pastrak A, Abushakra S. Pharmacokinetic Profile of Orally Administered Scyllo-Inositol (Elnd005) in Plasma, Cerebrospinal Fluid and Brain, and Corresponding Effect on Amyloid-Beta in Healthy Subjects. Clin Pharmacol Drug Dev 2013; 2:186-94. [DOI: 10.1002/cpdd.14] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 11/30/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Earvin Liang
- Elan Pharmaceuticals, Inc.; South San Francisco, CA; USA
| | - Pamela Garzone
- Elan Pharmaceuticals, Inc.; South San Francisco, CA; USA
| | | | - Martin Koller
- Elan Pharmaceuticals, Inc.; South San Francisco, CA; USA
| | - Thao Tran
- Huntington Medical Research Institutes; Pasadena, CA; USA
| | - Victor Xu
- Huntington Medical Research Institutes; Pasadena, CA; USA
| | - Brian Ross
- Huntington Medical Research Institutes; Pasadena, CA; USA
| | - Stanford S. Jhee
- PAREXEL International Early Phase (formerly California Clinical Trials); Glendale, CA; USA
| | - Larry Ereshefsky
- The University of Texas Health Science Center San Antonio; San Antonio, TX; USA
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21
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Nagarajan R, Sarma MK, Thomas MA, Chang L, Natha U, Wright M, Hayes J, Nielsen-Saines K, Michalik DE, Deville J, Church JA, Mason K, Critton-Mastandrea T, Nazarian S, Jing J, Keller MA. Neuropsychological function and cerebral metabolites in HIV-infected youth. J Neuroimmune Pharmacol 2012; 7:981-90. [PMID: 23065459 PMCID: PMC3557531 DOI: 10.1007/s11481-012-9407-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 09/18/2012] [Indexed: 12/14/2022]
Abstract
The effects of HIV on brain metabolites and cognitive function are not well understood. Sixteen HIV+youths (15 vertical, 1 transfusion transmissions) receiving combination antiretroviral therapy and 14 age-matched HIV- youths (13-25 years of age) were evaluated with brain two-dimensional (2D) magnetic resonance spectroscopy (MRS) at 3 Tesla (T) and a neuropsychological battery that assessed three cognitive domains (attention/processing speed, psychomotor ability, and executive function). The relationship between brain metabolite ratios and cognitive performance was explored. Compared to HIV- controls, HIV+ subjects had higher sycllo-inositol (Scy)/total creatine (tCr) (+32%, p = 0.016) and higher Scy/total choline (tCho) (+31%, p = 0.018) on 2D-MRS in the right frontal lobe. HIV+ subjects also had higher glutamate (Glu)/tCr (+13%, p = 0.022) and higher Glu/tCho (+15%, p = 0.048) than controls. HIV+ subjects demonstrated poorer attention/processing speed (p = 0.011, d = 1.03) but similar psychomotor and executive function compared to HIV- controls. The attention/processing score also correlated negatively with the ratio of N-acetylaspartate (NAA) to tCr on 2D-MRS (r = -0.75, p = 0.0019) in the HIV- controls, but not in the HIV+ subjects (Fisher's r-z transformation, p < 0.05). Our results suggest that attention/processing speed is impacted by early HIV infection and is associated with right hemisphere NAA/tCr. Scy and Glu ratios are also potential markers of brain health in chronic, lifelong HIV infection in perinatally infected youths receiving antiretroviral therapy.
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Affiliation(s)
- R. Nagarajan
- David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, CA, USA
| | - M. K. Sarma
- David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, CA, USA
| | - M. A. Thomas
- David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, CA, USA
| | - L. Chang
- University of Hawaii, Honolulu, HI, USA
| | - U. Natha
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - M. Wright
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - J. Hayes
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - K. Nielsen-Saines
- David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, CA, USA
| | - D. E. Michalik
- Miller’s Children’s Hospital of Long Beach, Long Beach, CA, USA
| | - J. Deville
- David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, CA, USA
| | - J. A. Church
- Children’s Hospital Los Angeles, Los Angeles, CA, USA
| | - K. Mason
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - T. Critton-Mastandrea
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - S. Nazarian
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - J. Jing
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - M. A. Keller
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
- Department of Pediatrics, Harbor-UCLA Medical Center, 1000 West Carson Street, Liu Building, RB3, Box 467, Torrance, CA 90509, USA
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22
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Yde CC, Bertram HC, Theil PK, Knudsen KEB. Effects of high dietary fibre diets formulated from by-products from vegetable and agricultural industries on plasma metabolites in gestating sows. Arch Anim Nutr 2011; 65:460-76. [DOI: 10.1080/1745039x.2011.621284] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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23
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Davison JE, Davies NP, English MW, Philip S, MacPherson LKR, Gissen P, Peet AC. Magnetic resonance spectroscopy in the diagnostic evaluation of brainstem lesions in Alexander disease. J Child Neurol 2011; 26:356-60. [PMID: 21270471 DOI: 10.1177/0883073810381279] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Alexander disease is a progressive neurodegenerative disease, which can present with brainstem lesions with imaging characteristics similar to multifocal low-grade glioma, thus presenting a diagnostic dilemma. The authors report a 6-year-old child presenting with multifocal brainstem lesions subsequently diagnosed to have Alexander disease. In vivo magnetic resonance spectroscopy generated a metabolite profile of the lesion allowing differentiation from low-grade glioma. Magnetic resonance spectroscopy is a powerful tool in the assessment of brainstem lesions and is a useful adjunct to conventional magnetic resonance imaging in the assessment and diagnosis of atypical brain lesions.
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Affiliation(s)
- James E Davison
- Birmingham Children's Hospital NHS Foundation Trust, Birmingham, UK
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Choi JK, Carreras I, Dedeoglu A, Jenkins BG. Detection of increased scyllo-inositol in brain with magnetic resonance spectroscopy after dietary supplementation in Alzheimer's disease mouse models. Neuropharmacology 2010; 59:353-7. [PMID: 20399219 DOI: 10.1016/j.neuropharm.2010.03.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 03/12/2010] [Accepted: 03/18/2010] [Indexed: 11/26/2022]
Abstract
There is evidence that inositol isomers may help protect against formation of toxic fibrils of Abeta fragments in Alzheimer's disease mouse models. Scyllo-inositol is one of the more promising inositol isomers for the potential treatment of Alzheimer's disease (AD) and can be detected using MRS in human subjects. In this manuscript we demonstrate using MRS, in two different mouse models of AD (APP x PS1 and APP x PS1 x tau), that we could detect increased scyllo-inositol in the hippocampus and frontal cortex in mice fed water supplemented with 16.5 mg/L of scyllo-inositol equivalent to about 3.3 mg/kg/day. We used both brain extracts using solution MRS as well as intact brain tissue using high resolution magic angle spinning (HRMAS) to ensure that any membrane-associated scyllo-inositol would be detected. By brain extracts we detected a 3.0 fold increase in scyllo-inositol in the scyllo-fed AD mice compared to normal diet (p < 0.001). Using HRMAS we detected a 2.2-2.4-fold increase in scyllo-inositol (p < 0.001). Scyllo-inositol treatment was associated with an increase in glutamine in hippocampus. The concentrations of scyllo-inositol were higher in the hippocampus than in the frontal cortex. Mice have a smaller concentration of scyllo-inositol than humans (ca. 100 microM vs. 500 microM in humans). Given the ease with which scyllo-inositol can be measured in human MRS data with high signal to noise ratios, these data suggest that MRS will prove useful for evaluation of inositol treatment trials in AD subjects.
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Affiliation(s)
- Ji-Kyung Choi
- A A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, Boston, MA 02114, USA.
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Golde TE, Petrucelli L, Lewis J. Targeting Abeta and tau in Alzheimer's disease, an early interim report. Exp Neurol 2009; 223:252-66. [PMID: 19716367 DOI: 10.1016/j.expneurol.2009.07.035] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Revised: 06/25/2009] [Accepted: 07/23/2009] [Indexed: 12/28/2022]
Abstract
The amyloid beta (Abeta) and tau proteins, which misfold, aggregate, and accumulate in the Alzheimer's disease (AD) brain, are implicated as central factors in a complex neurodegenerative cascade. Studies of mutations that cause early onset AD and promote Abeta accumulation in the brain strongly support the notion that inhibiting Abeta aggregation will prevent AD. Similarly, genetic studies of frontotemporal dementia with parkinsonism linked to chromosome 17 (FTDP-17 MAPT) showing that mutations in the MAPT gene encoding tau lead to abnormal tau accumulation and neurodegeneration. Such genetic studies clearly show that tau dysfunction and aggregation can be central to neurodegeneration, however, most likely in a secondary fashion in relation to AD. Additional pathologic, biochemical, and modeling studies further support the concept that Abeta and tau are prime targets for disease modifying therapies in AD. Treatment strategies aimed at preventing the aggregation and accumulation of Abeta, tau, or both proteins should therefore be theoretically possible, assuming that treatment can be initiated before either irreversible damage is present or downstream, self-sustaining, pathological cascades have been initiated. Herein, we will review recent advances and also potential setbacks with respect to the myriad of therapeutic strategies that are designed to slow down, prevent, or clear the accumulation of either "pathological" Abeta or tau. We will also discuss the need for thoughtful prioritization with respect to clinical development of the preclinically validated modifiers of Abeta and tau pathology. The current number of candidate therapies targeting Abeta is becoming so large that a triage process is clearly needed to insure that resources are invested in a way such that the best candidates for disease modifying therapy are rapidly moved toward clinical trials. Finally, we will discuss the challenges for an appropriate "triage" after potential disease modifying therapies targeting tau and Abeta have entered clinical trials.
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Affiliation(s)
- Todd E Golde
- Department of Neuroscience, College of Medicine, Mayo Clinic, 4500 San Pablo Rd., Jacksonville, FL 32224, USA.
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Bai C, Zhao L, Rebecchi M, Tsai MD, Bruzik KS. Trans-cyclization of phosphatidylinositol catalyzed by phospholipase C from Streptomyces antibioticus. J Am Chem Soc 2009; 131:8362-3. [PMID: 19492832 DOI: 10.1021/ja902326u] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Calcium-dependent phosphatidylinositol-specific phospholipase C from Streptomyces antibioticus (saPLC1) catalyzes the cleavage of phosphatidylinositol (PI) by an unusual mechanism involving a 1,6-cyclization with formation of inositol trans-1,6-cyclic phosphate (1,6-IcP), rather then inositol cis-1,2-cyclic phosphate (1,2-IcP). This conclusion has been reached based on the comparison of the released cyclic phosphate intermediate by the H16A mutant of saPLC1 with a genuine 1,6-IcP synthesized by a chemoenzymatic approach.
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Affiliation(s)
- Chuan Bai
- Department of Medicinal Chemistry and Pharmacognosy, The University of Illinois at Chicago, Chicago, Illinois 60612, USA
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Ghenimi N, Beauvieux MC, Biran M, Pallet V, Higueret P, Gallis JL. Vitamin A deficiency in rats induces anatomic and metabolic changes comparable with those of neurodegenerative disorders. J Nutr 2009; 139:696-702. [PMID: 19193816 DOI: 10.3945/jn.108.102988] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Anatomic and metabolic changes in central nervous system induced by 14 wk of vitamin A deprivation (VAD) were monitored and quantified in rats. In vivo brain magnetic resonance imaging (4.7T) was performed at 5, 7, 9, 11, and 14 wk of each diet after weaning in the following: 1) VAD group; 2) control pair-fed group; and 3) control group that consumed the diet ad libitum (1.15 microg retinol/g diet). After 14 wk, high-resolution magic angle spinning proton NMR spectroscopy (11.7T) was performed on small samples of cortex, hippocampus, and striatum. Serum retinol concentrations remained stable and cerebral volume (CV) increased as a linear function of body weight in the ad libitum group (R(2) = 0.78; P = 0.047) and pair-fed controls (R(2) = 0.78; P = 0.046). In VAD rats, retinol decreased from the onset of deprivation (2.2 +/- 0.14 micromol/L) to reach 0.3 +/- 0.13 micromol/L at wk 5, followed by a stopping of body weight gain from wk 7. In VAD rats, the CV decreased from wk 5 and reached a value 11% lower than that of the control group (P < 0.001) at wk 14 and was correlated with retinol status (R(2) = 0.99; P = 0.002). The VAD hippocampal volume decreased beginning at wk 9 and was 22% lower than that of the control group at wk 14 (P < 0.001). Compared with the control, VAD led to lower N acetyl aspartate:creatine+phosphocreatine (Cr) in cortex (-36%), striatum (-22%), and hippocampus (-19%) and higher myoinositol:Cr in cortex (+127%) and striatum (+150%). VAD induced anatomic and metabolic changes comparable to those associated with neurodegenerative disorders. By wk 7 of deprivation, the slowing in cerebral growth that correlated with the retinol level could be considered as a predictive marker of brain disorders, confirmed by metabolic data from VAD rats after 14 wk.
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Affiliation(s)
- Nadirah Ghenimi
- Centre de Résonance Magnétique des Systèmes Biologiques, Unité Mixte de Recherche 5536 Centre National de Recherche Scientifique-Université Bordeaux 2, F-33076 Bordeaux Cedex, France
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Griffith HR, Stewart CC, den Hollander JA. Proton magnetic resonance spectroscopy in dementias and mild cognitive impairment. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2009; 84:105-31. [PMID: 19501715 DOI: 10.1016/s0074-7742(09)00406-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
With the anticipated increase in dementias due to the aging demographic of industrialized nations, biomarkers for neurodegenerative diseases are increasingly important as new therapies are being developed for clinical trials. Proton MR spectroscopy ((1)H MRS) appears poised to be a viable means of tracking brain metabolic changes due to neurodegenerative diseases and potentially as a biomarker for treatment effects in clinical therapeutic trials. This review highlights the body of literature investigating brain metabolic abnormalities in Alzheimer's disease, amnestic mild cognitive impairment, frontotemporal dementia, vascular dementia, Lewy body dementia, and Parkinson's disease dementia. In particular, the review addresses the viability of (1)H MRS to discriminate among dementias, to measure disease progression, and to measure the effects of pharmacological treatments. While findings to date are encouraging, more study is needed in longitudinal patterns of brain metabolic changes, correspondence with changes in clinical markers of disease progression, and sensitivity of (1)H MRS measures to treatment effects. Such developments will hopefully benefit the search for effective treatments of dementias in the twenty-first century.
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Affiliation(s)
- H Randall Griffith
- Department of Neurology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
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Griffith HR, den Hollander JA, Okonkwo OC, O'Brien T, Watts RL, Marson DC. Brain metabolism differs in Alzheimer's disease and Parkinson's disease dementia. Alzheimers Dement 2008; 4:421-7. [PMID: 19012867 DOI: 10.1016/j.jalz.2008.04.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2007] [Revised: 03/28/2008] [Accepted: 04/28/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND Few comparative studies exist of metabolic brain changes among neurodegenerative illnesses. We compared brain metabolic abnormalities in Alzheimer's disease (AD) and in Parkinson's disease with dementia (PDD) as measured by proton magnetic resonance spectroscopy (MRS). METHODS Twelve patients with idiopathic PDD, 22 patients with probable mild AD, and 61 healthy older controls underwent posterior cingulate MRS. RESULTS Patients with AD exhibited reduced N-acetyl aspartate (NAA)/creatine (Cr) (P < .05) and increased choline (Cho)/Cr (P < .05) and myo-inositol (mI)/Cr (P < .01) compared with controls. Patients with PDD exhibited reduced NAA/Cr (P < .05) and glutamate (Glu)/Cr (P < .01) compared with controls. There was reduced Glu/Cr in PDD compared with AD (P < .01). CONCLUSIONS Patients with AD and patients with PDD exhibited distinct brain metabolic MRS profiles. Findings suggest that comparison of brain MRS profiles across dementias provides useful direction for future study.
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Affiliation(s)
- H Randall Griffith
- Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA.
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Domange C, Canlet C, Traoré A, Biélicki G, Keller C, Paris A, Priymenko N. Orthologous Metabonomic Qualification of a Rodent Model Combined with Magnetic Resonance Imaging for an Integrated Evaluation of the Toxicity of Hypochœris radicata. Chem Res Toxicol 2008; 21:2082-96. [DOI: 10.1021/tx800159x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Céline Domange
- UMR 1089 INRA/ENVT, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse, INRA Clermont-Ferrand/Theix QuaPA STIM, F-63122 St. Genès Champanelle, and Department of Nutrition and Botanic and Vegetal Toxicology, ENVT, 23 Chemin des Capelles, F-31300 Toulouse, France
| | - Cécile Canlet
- UMR 1089 INRA/ENVT, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse, INRA Clermont-Ferrand/Theix QuaPA STIM, F-63122 St. Genès Champanelle, and Department of Nutrition and Botanic and Vegetal Toxicology, ENVT, 23 Chemin des Capelles, F-31300 Toulouse, France
| | - Amidou Traoré
- UMR 1089 INRA/ENVT, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse, INRA Clermont-Ferrand/Theix QuaPA STIM, F-63122 St. Genès Champanelle, and Department of Nutrition and Botanic and Vegetal Toxicology, ENVT, 23 Chemin des Capelles, F-31300 Toulouse, France
| | - Guy Biélicki
- UMR 1089 INRA/ENVT, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse, INRA Clermont-Ferrand/Theix QuaPA STIM, F-63122 St. Genès Champanelle, and Department of Nutrition and Botanic and Vegetal Toxicology, ENVT, 23 Chemin des Capelles, F-31300 Toulouse, France
| | - Cécile Keller
- UMR 1089 INRA/ENVT, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse, INRA Clermont-Ferrand/Theix QuaPA STIM, F-63122 St. Genès Champanelle, and Department of Nutrition and Botanic and Vegetal Toxicology, ENVT, 23 Chemin des Capelles, F-31300 Toulouse, France
| | - Alain Paris
- UMR 1089 INRA/ENVT, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse, INRA Clermont-Ferrand/Theix QuaPA STIM, F-63122 St. Genès Champanelle, and Department of Nutrition and Botanic and Vegetal Toxicology, ENVT, 23 Chemin des Capelles, F-31300 Toulouse, France
| | - Nathalie Priymenko
- UMR 1089 INRA/ENVT, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse, INRA Clermont-Ferrand/Theix QuaPA STIM, F-63122 St. Genès Champanelle, and Department of Nutrition and Botanic and Vegetal Toxicology, ENVT, 23 Chemin des Capelles, F-31300 Toulouse, France
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Griffith HR, Okonkwo OC, den Hollander JA, Belue K, Lanza S, Harrell LE, Brockington JC, Clark DG, Marson DC. Brain Proton MRS is Correlated with Financial Abilities in Patients with Alzheimer’s Disease. Brain Imaging Behav 2007. [DOI: 10.1007/s11682-007-9002-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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