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Genovese G, Diaz-Fernandez B, Lejeune FX, Ronen I, Marjańska M, Yahia-Cherif L, Lehéricy S, Branzoli F, Rosso C. Longitudinal Monitoring of Microstructural Alterations in Cerebral Ischemia with in Vivo Diffusion-weighted MR Spectroscopy. Radiology 2023; 306:e220430. [PMID: 36318030 PMCID: PMC9968771 DOI: 10.1148/radiol.220430] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 02/22/2023]
Abstract
Background The time course of cellular damage after acute ischemic stroke (IS) is currently not well known, and specific noninvasive markers of microstructural alterations linked to inflammation are lacking, which hinders the monitoring of anti-inflammatory treatment. Purpose To evaluate the temporal pattern of neuronal and glial microstructural changes after stroke using in vivo single-voxel diffusion-weighted MR spectroscopy. Materials and Methods In this prospective longitudinal study, participants with IS and healthy volunteers (HVs) underwent MRI at 3.0 T. In participants with IS, apparent diffusion coefficients (ADCs) and concentrations of total N-acetyl-aspartate (tNAA), total creatine (tCr), and total choline (tCho) were measured in volumes of interest (VOIs), including the lesion VOI (VOIles) and the contralateral VOI (VOIcl) at 2 weeks, 1 month, and 3 months after IS. HVs were examined once, with VOIs located in the same brain regions as participants with IS. Within- and between-group differences and longitudinal changes were examined using linear mixed-effects models. Results Twenty participants with IS (mean age, 61 years ± 13 [SD]; 12 women) and 20 HVs (mean age, 59 years ± 13; 12 women) were evaluated. No differences in ADCs or concentrations were observed in VOIcl between HVs and participants with IS. In participants with IS, the ADC of tCr was higher in VOIles than in VOIcl at 1 month (+14.4%, P = .004) and 3 months after IS (+19.0%, P < .001), while the ADC of tCho was higher only at 1 month (+16.7%, P = .001). No difference in the ADC of tNAA was observed between the two VOIs at any time point. tNAA and tCr concentrations were lower in VOIles than in VOIcl and were stable over time (approximately -50% and -30%, respectively; P < .001). Conclusion High diffusivity of choline-containing compounds and total creatine (tCr) in the ischemic lesion 1 month after ischemic stroke (IS) indicates glial morphologic changes, suggesting that active inflammation is still ongoing at this time point. High tCr diffusivity up to 3 months after IS likely reflects the presence of astrogliosis at the chronic stage of cerebral ischemia. Clinical trial registration no. NCT02833961 © RSNA, 2022 Online supplemental material is available for this article.
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Affiliation(s)
| | | | - François-Xavier Lejeune
- From the Paris Brain Institute (Institut du Cerveau–ICM),
Center for Neuroimaging Research–CENIR, Hôpital
Pitié-Salpêtrière, 47 Boulevard de l’Hôpital,
CS 21414, 75646 Paris Cedex 13, France (G.G., L.Y.C., S.L., F.B.); Hopital
Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm
U 1127, CNRS UMR 7225, Paris, France (G.G., F.X.L., L.Y.C., S.L., F.B., C.R.);
APHP-Urgences Cérébro-Vasculaires, Hôpital
Pitié-Salpêtrière, Paris, France (B.D.F., C.R.); Center for
Magnetic Resonance Research, Department of Radiology, University of Minnesota,
Minneapolis, Minn (G.G., M.M.); Paris Brain Institute’s Data Analysis
Core, Paris, France (F.X.L.); Clinical Imaging Sciences Centre, Brighton and
Sussex Medical School, Falmer, United Kingdom (I.R.); and STARE Team, iCRIN,
Institut du Cerveau et de la Moelle Épinière, ICM, Paris, France
(C.R.)
| | - Itamar Ronen
- From the Paris Brain Institute (Institut du Cerveau–ICM),
Center for Neuroimaging Research–CENIR, Hôpital
Pitié-Salpêtrière, 47 Boulevard de l’Hôpital,
CS 21414, 75646 Paris Cedex 13, France (G.G., L.Y.C., S.L., F.B.); Hopital
Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm
U 1127, CNRS UMR 7225, Paris, France (G.G., F.X.L., L.Y.C., S.L., F.B., C.R.);
APHP-Urgences Cérébro-Vasculaires, Hôpital
Pitié-Salpêtrière, Paris, France (B.D.F., C.R.); Center for
Magnetic Resonance Research, Department of Radiology, University of Minnesota,
Minneapolis, Minn (G.G., M.M.); Paris Brain Institute’s Data Analysis
Core, Paris, France (F.X.L.); Clinical Imaging Sciences Centre, Brighton and
Sussex Medical School, Falmer, United Kingdom (I.R.); and STARE Team, iCRIN,
Institut du Cerveau et de la Moelle Épinière, ICM, Paris, France
(C.R.)
| | - Małgorzata Marjańska
- From the Paris Brain Institute (Institut du Cerveau–ICM),
Center for Neuroimaging Research–CENIR, Hôpital
Pitié-Salpêtrière, 47 Boulevard de l’Hôpital,
CS 21414, 75646 Paris Cedex 13, France (G.G., L.Y.C., S.L., F.B.); Hopital
Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm
U 1127, CNRS UMR 7225, Paris, France (G.G., F.X.L., L.Y.C., S.L., F.B., C.R.);
APHP-Urgences Cérébro-Vasculaires, Hôpital
Pitié-Salpêtrière, Paris, France (B.D.F., C.R.); Center for
Magnetic Resonance Research, Department of Radiology, University of Minnesota,
Minneapolis, Minn (G.G., M.M.); Paris Brain Institute’s Data Analysis
Core, Paris, France (F.X.L.); Clinical Imaging Sciences Centre, Brighton and
Sussex Medical School, Falmer, United Kingdom (I.R.); and STARE Team, iCRIN,
Institut du Cerveau et de la Moelle Épinière, ICM, Paris, France
(C.R.)
| | - Lydia Yahia-Cherif
- From the Paris Brain Institute (Institut du Cerveau–ICM),
Center for Neuroimaging Research–CENIR, Hôpital
Pitié-Salpêtrière, 47 Boulevard de l’Hôpital,
CS 21414, 75646 Paris Cedex 13, France (G.G., L.Y.C., S.L., F.B.); Hopital
Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm
U 1127, CNRS UMR 7225, Paris, France (G.G., F.X.L., L.Y.C., S.L., F.B., C.R.);
APHP-Urgences Cérébro-Vasculaires, Hôpital
Pitié-Salpêtrière, Paris, France (B.D.F., C.R.); Center for
Magnetic Resonance Research, Department of Radiology, University of Minnesota,
Minneapolis, Minn (G.G., M.M.); Paris Brain Institute’s Data Analysis
Core, Paris, France (F.X.L.); Clinical Imaging Sciences Centre, Brighton and
Sussex Medical School, Falmer, United Kingdom (I.R.); and STARE Team, iCRIN,
Institut du Cerveau et de la Moelle Épinière, ICM, Paris, France
(C.R.)
| | - Stéphane Lehéricy
- From the Paris Brain Institute (Institut du Cerveau–ICM),
Center for Neuroimaging Research–CENIR, Hôpital
Pitié-Salpêtrière, 47 Boulevard de l’Hôpital,
CS 21414, 75646 Paris Cedex 13, France (G.G., L.Y.C., S.L., F.B.); Hopital
Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm
U 1127, CNRS UMR 7225, Paris, France (G.G., F.X.L., L.Y.C., S.L., F.B., C.R.);
APHP-Urgences Cérébro-Vasculaires, Hôpital
Pitié-Salpêtrière, Paris, France (B.D.F., C.R.); Center for
Magnetic Resonance Research, Department of Radiology, University of Minnesota,
Minneapolis, Minn (G.G., M.M.); Paris Brain Institute’s Data Analysis
Core, Paris, France (F.X.L.); Clinical Imaging Sciences Centre, Brighton and
Sussex Medical School, Falmer, United Kingdom (I.R.); and STARE Team, iCRIN,
Institut du Cerveau et de la Moelle Épinière, ICM, Paris, France
(C.R.)
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Diffusion-weighted MR spectroscopy (DW-MRS) is sensitive to LPS-induced changes in human glial morphometry: A preliminary study. Brain Behav Immun 2022; 99:256-265. [PMID: 34673176 DOI: 10.1016/j.bbi.2021.10.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/17/2021] [Accepted: 10/11/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Low-dose lipopolysaccharide (LPS) is a well-established experimental method for inducing systemic inflammation and shown by microscopy to activate microglia in rodents. Currently, techniques for in-vivo imaging of glia in humans are limited to TSPO (Translocator protein) PET, which is expensive, methodologically challenging, and has poor cellular specificity. Diffusion-weighted magnetic resonance spectroscopy (DW-MRS) sensitizes MR spectra to diffusion of intracellular metabolites, potentially providing cell-specific information about cellular morphology. In this preliminary study, we applied DW-MRS to measure changes in the apparent diffusion coefficients (ADC) of glial and neuronal metabolites to healthy participants who underwent an LPS administration protocol. We hypothesized that the ADC of glial metabolites will be selectively modulated by LPS-induced glial activation. METHODS Seven healthy male volunteers, (mean 25.3 ± 5.9 years) were each tested in two separate sessions once after LPS (1 ng/Kg intravenously) and once after placebo (saline). Physiological responses were monitored during each session and serial blood samples and Profile of Mood States (POMS) completed to quantify white blood cell (WBC), cytokine and mood responses. DW-MRS data were acquired 5-5½ hours after injection from two brain regions: grey matter in the left thalamus, and frontal white matter. RESULTS Body temperature, heart rate, WBC and inflammatory cytokines were significantly higher in the LPS compared to the placebo condition (p < 0.001). The ADC of the glial metabolite choline (tCho) was also significantly increased after LPS administration compared to placebo (p = 0.008) in the thalamus which scaled with LPS-induced changes in POMS total and negative mood (Adj R2 = 0.83; p = 0.004). CONCLUSIONS DW-MRS may be a powerful new tool sensitive to glial cytomorphological changes in grey matter induced by systemic inflammation.
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Adanyeguh IM, Branzoli F, Delorme C, Méneret A, Monin ML, Luton MP, Durr A, Sabidussi E, Mochel F. Multiparametric characterization of white matter alterations in early stage Huntington disease. Sci Rep 2021; 11:13101. [PMID: 34162958 PMCID: PMC8222368 DOI: 10.1038/s41598-021-92532-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 05/27/2021] [Indexed: 11/09/2022] Open
Abstract
Huntington's disease (HD) is a monogenic, fully penetrant neurodegenerative disorder. Widespread white matter damage affects the brain of patients with HD at very early stages of the disease. Fixel-based analysis (FBA) is a novel method to investigate the contribution of individual crossing fibers to the white matter damage and to detect possible alterations in both fiber density and fiber-bundle morphology. Diffusion-weighted magnetic resonance spectroscopy (DW-MRS), on the other hand, quantifies the motion of brain metabolites in vivo, thus enabling the investigation of microstructural alteration of specific cell populations. The aim of this study was to identify novel specific microstructural imaging markers of white matter degeneration in HD, by combining FBA and DW-MRS. Twenty patients at an early stage of HD and 20 healthy controls were recruited in a monocentric study. Using diffusion imaging we observed alterations to the brain microstructure and their morphology in patients with HD. Furthermore, FBA revealed specific fiber populations that were affected by the disease. Moreover, the mean diffusivity of the intra-axonal metabolite N-acetylaspartate, co-measured with N-acetylaspartylglutamate (tNAA), was significantly reduced in the corpus callosum of patients compared to controls. FBA and DW-MRS of tNAA provided more specific information about the biological mechanisms underlying HD and showed promise for early investigation of white matter degeneration in HD.
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Affiliation(s)
- Isaac M Adanyeguh
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France
| | - Francesca Branzoli
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France.,Center for NeuroImaging Research (CENIR), Institut du Cerveau Et de La Moelle Épinière, 75013, Paris, France
| | - Cécile Delorme
- Department of Neurology, AP-HP, Pitié-Salpêtrière University Hospital, Paris, France
| | - Aurélie Méneret
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France.,Department of Neurology, AP-HP, Pitié-Salpêtrière University Hospital, Paris, France
| | - Marie-Lorraine Monin
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France
| | - Marie-Pierre Luton
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France
| | - Alexandra Durr
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France
| | - Emanoel Sabidussi
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France
| | - Fanny Mochel
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, 75013, Paris, France. .,Department of Genetics, Center for Neurometabolic Diseases, AP-HP, La Pitié-Salpêtrière University Hospital, 47 Boulevard de l'Hôpital, 75013, Paris, France.
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Genovese G, Palombo M, Santin MD, Valette J, Ligneul C, Aigrot MS, Abdoulkader N, Langui D, Millecamps A, Baron-Van Evercooren A, Stankoff B, Lehericy S, Petiet A, Branzoli F. Inflammation-driven glial alterations in the cuprizone mouse model probed with diffusion-weighted magnetic resonance spectroscopy at 11.7 T. NMR IN BIOMEDICINE 2021; 34:e4480. [PMID: 33480101 DOI: 10.1002/nbm.4480] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
Inflammation of brain tissue is a complex response of the immune system to the presence of toxic compounds or to cell injury, leading to a cascade of pathological processes that include glial cell activation. Noninvasive MRI markers of glial reactivity would be very useful for in vivo detection and monitoring of inflammation processes in the brain, as well as for evaluating the efficacy of personalized treatments. Due to their specific location in glial cells, myo-inositol (mIns) and choline compounds (tCho) seem to be the best candidates for probing glial-specific intra-cellular compartments. However, their concentrations quantified using conventional proton MRS are not specific for inflammation. In contrast, it has been recently suggested that mIns intra-cellular diffusion, measured using diffusion-weighted MRS (DW-MRS) in a mouse model of reactive astrocytes, could be a specific marker of astrocytic hypertrophy. In order to evaluate the specificity of both mIns and tCho diffusion to inflammation-driven glial alterations, we performed DW-MRS in a volume of interest containing the corpus callosum and surrounding tissue of cuprizone-fed mice after 6 weeks of intoxication, and evaluated the extent of astrocytic and microglial alterations using immunohistochemistry. Both mIns and tCho apparent diffusion coefficients were significantly elevated in cuprizone-fed mice compared with control mice, and histologic evaluation confirmed the presence of severe inflammation. Additionally, mIns and tCho diffusion showed, respectively, strong and moderate correlations with histological measures of astrocytic and microglial area fractions, confirming DW-MRS as a promising tool for specific detection of glial changes under pathological conditions.
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Affiliation(s)
- Guglielmo Genovese
- Center for Neuroimaging Research-CENIR, Paris Brain Institute (Institut du Cerveau-ICM), Paris, France
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Marco Palombo
- Centre for Medical Image Computing and Department of Computer Science, University College London, London, UK
| | - Mathieu D Santin
- Center for Neuroimaging Research-CENIR, Paris Brain Institute (Institut du Cerveau-ICM), Paris, France
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Julien Valette
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), MIRCen, Fontenay-aux-Roses, France
- Neurodegenerative Diseases Laboratory, UMR9199, CEA, CNRS, Université Paris Sud, Université Paris-Saclay, Fontenay-aux-Roses, France
| | - Clémence Ligneul
- Wellcome Centre for Integrative Neuroimaging, FMRIB, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Marie-Stéphane Aigrot
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
- Core Facility ICM Quant, Institut du Cerveau-ICM, Paris, France
| | - Nasteho Abdoulkader
- Center for Neuroimaging Research-CENIR, Paris Brain Institute (Institut du Cerveau-ICM), Paris, France
| | - Dominique Langui
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
- Core Facility ICM Quant, Institut du Cerveau-ICM, Paris, France
| | | | | | - Bruno Stankoff
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Stéphane Lehericy
- Center for Neuroimaging Research-CENIR, Paris Brain Institute (Institut du Cerveau-ICM), Paris, France
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Alexandra Petiet
- Center for Neuroimaging Research-CENIR, Paris Brain Institute (Institut du Cerveau-ICM), Paris, France
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Francesca Branzoli
- Center for Neuroimaging Research-CENIR, Paris Brain Institute (Institut du Cerveau-ICM), Paris, France
- Hôpital Pitié-Salpêtrière, ICM, Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Paris, France
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Ricigliano VA, Tonietto M, Palladino R, Poirion E, De Luca A, Branzoli F, Bera G, Maillart E, Stankoff B, Bodini B. Thalamic energy dysfunction is associated with thalamo-cortical tract damage in multiple sclerosis: A diffusion spectroscopy study. Mult Scler 2021; 27:528-538. [PMID: 33566723 DOI: 10.1177/1352458520921362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Diffusion-weighted 1H magnetic resonance spectroscopy (DW-MRS) allows to quantify creatine-phosphocreatine brain diffusivity (ADC(tCr)), whose reduction in multiple sclerosis (MS) has been proposed as a proxy of energy dysfunction. OBJECTIVE To investigate whether thalamic ADC(tCr) changes are associated with thalamo-cortical tract damage in MS. METHODS Twenty patients with MS and 13 healthy controls (HC) were enrolled in a DW-MRS and DW imaging (DWI) study. From DW-MRS, ADC(tCr) and total N-acetyl-aspartate diffusivity (ADC(tNAA)) were extracted in the thalami. Three thalamo-cortical tracts and one non-thalamic control tract were reconstructed from DWI. Fractional anisotropy (FA), mean (MD), axial (AD), and radial diffusivity (RD), reflecting microstructural integrity, were extracted for each tract. Associations between thalamic ADC(tCr) and tract metrics were assessed using linear regression models adjusting for age, sex, thalamic volume, thalamic ADC(tNAA), and tract-specific lesion load. RESULTS Lower thalamic ADC(tCr) was associated with higher MD and RD of thalamo-cortical projections in MS (MD: p = 0.029; RD: p = 0.017), but not in HC (MD: p = 0.625, interaction term between thalamic ADC(tCr) and group = 0.019; RD: p = 0.320, interaction term = 0.05). Thalamic ADC(tCr) was not associated with microstructural changes of the control tract. CONCLUSION Reduced thalamic ADC(tCr) correlates with thalamo-cortical tract damage in MS, showing that pathologic changes in thalamic energy metabolism are associated with structural degeneration of connected fibers.
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Affiliation(s)
- Vito Ag Ricigliano
- Sorbonne University, Paris Brain Institute, ICM, Pitié Salpêtrière Hospital, Inserm UMR S 1127, CNRS UMR 7225, Paris, France
| | - Matteo Tonietto
- Sorbonne University, Paris Brain Institute, ICM, Pitié Salpêtrière Hospital, Inserm UMR S 1127, CNRS UMR 7225, Paris, France / Paris-Saclay University, CEA, CNRS, Inserm, BioMaps, Service Hospitalier Fréderic Joliot, Orsay, France
| | - Raffaele Palladino
- Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK/Department of Public Health, University of Naples Federico II, Naples, Italy
| | - Emilie Poirion
- Sorbonne University, Paris Brain Institute, ICM, Pitié Salpêtrière Hospital, Inserm UMR S 1127, CNRS UMR 7225, Paris, France
| | - Alberto De Luca
- Image Sciences Institute, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Francesca Branzoli
- Sorbonne University, Paris Brain Institute, ICM, Pitié Salpêtrière Hospital, Inserm UMR S 1127, CNRS UMR 7225, Paris, France / Centre de Neuroimagerie de la Recherche, Paris Brain Institute, ICM, Paris, France
| | - Geraldine Bera
- Sorbonne University, Paris Brain Institute, ICM, Pitié Salpêtrière Hospital, Inserm UMR S 1127, CNRS UMR 7225, Paris, France
| | | | - Bruno Stankoff
- Sorbonne University, Paris Brain Institute, ICM, Pitié Salpêtrière Hospital, Inserm UMR S 1127, CNRS UMR 7225, Paris, France / Neurology Department, St Antoine Hospital, APHP, Paris, France
| | - Benedetta Bodini
- Sorbonne University, Paris Brain Institute, ICM, Pitié Salpêtrière Hospital, Inserm UMR S 1127, CNRS UMR 7225, Paris, France / Neurology Department, St Antoine Hospital, APHP, Paris, France
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Abstract
Multiple sclerosis (MS) is a complex and debilitating neurodegenerative disease, with unknown cause(s), unpredictable prognosis, and rather limited treatment options. MS is often accompanied by various metabolic disturbances, with impaired creatine metabolism may play a role in its pathogenesis and the clinical course of the disease. This review summarizes human trials describing alterations in creatine levels in the nervous system and other tissues during MS, affects how certain medications for MS affect brain creatine concentrations, and discusses a possible demand for exogenous creatine as an adjunct therapeutic agent in the management of MS. Creatine metabolism seems to be dysfunctional in MS, indicating a low metabolic state of the brain and other relevant organs in this unpredictable demyelinating disease. A disease-driven brain creatine deficit could be seen as a distinctive pathological facet of severe MS that might be approached with targeted therapies in aim to restore creatine homeostasis.
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Affiliation(s)
- Sergej M Ostojic
- FSPE Applied Bioenergetics Lab, University of Novi Sad, Novi Sad, Serbia.,Faculty of Health Sciences, University of Pecs, Pecs, Hungary
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7
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Swanberg KM, Landheer K, Pitt D, Juchem C. Quantifying the Metabolic Signature of Multiple Sclerosis by in vivo Proton Magnetic Resonance Spectroscopy: Current Challenges and Future Outlook in the Translation From Proton Signal to Diagnostic Biomarker. Front Neurol 2019; 10:1173. [PMID: 31803127 PMCID: PMC6876616 DOI: 10.3389/fneur.2019.01173] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 10/21/2019] [Indexed: 01/03/2023] Open
Abstract
Proton magnetic resonance spectroscopy (1H-MRS) offers a growing variety of methods for querying potential diagnostic biomarkers of multiple sclerosis in living central nervous system tissue. For the past three decades, 1H-MRS has enabled the acquisition of a rich dataset suggestive of numerous metabolic alterations in lesions, normal-appearing white matter, gray matter, and spinal cord of individuals with multiple sclerosis, but this body of information is not free of seeming internal contradiction. The use of 1H-MRS signals as diagnostic biomarkers depends on reproducible and generalizable sensitivity and specificity to disease state that can be confounded by a multitude of influences, including experiment group classification and demographics; acquisition sequence; spectral quality and quantifiability; the contribution of macromolecules and lipids to the spectroscopic baseline; spectral quantification pipeline; voxel tissue and lesion composition; T1 and T2 relaxation; B1 field characteristics; and other features of study design, spectral acquisition and processing, and metabolite quantification about which the experimenter may possess imperfect or incomplete information. The direct comparison of 1H-MRS data from individuals with and without multiple sclerosis poses a special challenge in this regard, as several lines of evidence suggest that experimental cohorts may differ significantly in some of these parameters. We review the existing findings of in vivo1H-MRS on central nervous system metabolic abnormalities in multiple sclerosis and its subtypes within the context of study design, spectral acquisition and processing, and metabolite quantification and offer an outlook on technical considerations, including the growing use of machine learning, by future investigations into diagnostic biomarkers of multiple sclerosis measurable by 1H-MRS.
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Affiliation(s)
- Kelley M Swanberg
- Department of Biomedical Engineering, Columbia University Fu Foundation School of Engineering and Applied Science, New York, NY, United States
| | - Karl Landheer
- Department of Biomedical Engineering, Columbia University Fu Foundation School of Engineering and Applied Science, New York, NY, United States
| | - David Pitt
- Department of Neurology, Yale University School of Medicine, New Haven, CT, United States
| | - Christoph Juchem
- Department of Biomedical Engineering, Columbia University Fu Foundation School of Engineering and Applied Science, New York, NY, United States.,Department of Radiology, Columbia University College of Physicians and Surgeons, New York, NY, United States
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Reischauer C, Gutzeit A, Neuwirth C, Fuchs A, Sartoretti-Schefer S, Weber M, Czell D. In-vivo evaluation of neuronal and glial changes in amyotrophic lateral sclerosis with diffusion tensor spectroscopy. Neuroimage Clin 2018; 20:993-1000. [PMID: 30317156 PMCID: PMC6190601 DOI: 10.1016/j.nicl.2018.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 08/21/2018] [Accepted: 10/02/2018] [Indexed: 02/08/2023]
Abstract
Diffusion tensor spectroscopy (DTS) combines features of magnetic resonance spectroscopy and diffusion tensor imaging and permits evaluating cell-type specific properties of microstructure by probing the diffusion of intracellular metabolites. This exploratory study investigates for the first time microstructural changes in the neuronal and glial compartments of the brain of patients with amyotrophic lateral sclerosis (ALS) using DTS. To this end, the diffusion properties of the neuronal metabolite tNAA (N-acetylaspartate + N-acetylaspartylglutamate) and the predominantly glial metabolites tCr (creatine + phosphocreatine) and tCho (choline-containing compounds) were evaluated in the primary motor cortex of 24 ALS patients and 27 healthy controls. Significantly increased values in the diffusivities of all three metabolites were found in ALS patients relative to controls. Further analysis revealed more pronounced microstructural alterations in ALS patients with limb onset than with bulbar onset relative to controls. This observation may be related to the fact that the spectroscopic voxel was positioned in the part of the motor cortex where the motor functions of the limbs are represented. The higher diffusivities of tNAA may reflect neuronal damage and/or may be a consequence of mitochondrial dysfunction in ALS. Increased diffusivities of tCr and tCho are in line with reactive microglia and astrocytes surrounding degenerating motor neurons in the primary motor cortex of ALS patients. This pilot study demonstrates for the first time that cell-type specific microstructural alterations in the brain of ALS patients may be explored in vivo and non-invasively with DTS. In conjunction with other microstructural magnetic resonance imaging techniques, DTS may provide further insights into the pathogenic mechanisms that underlie neurodegeneration in ALS.
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Affiliation(s)
- Carolin Reischauer
- Institute of Radiology and Nuclear Medicine, Clinical Research Unit, Hirslanden Hospital St. Anna, Lucerne, Switzerland; Institute for Biomedical Engineering, ETH and University of Zurich, Zurich, Switzerland.
| | - Andreas Gutzeit
- Institute of Radiology and Nuclear Medicine, Clinical Research Unit, Hirslanden Hospital St. Anna, Lucerne, Switzerland; Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland; Department of Radiology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Christoph Neuwirth
- Neuromoscular Disease Unit, ALS Clinic, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Alexander Fuchs
- Institute for Biomedical Engineering, ETH and University of Zurich, Zurich, Switzerland
| | | | - Markus Weber
- Neuromoscular Disease Unit, ALS Clinic, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - David Czell
- Department of Neurology, Cantonal Hospital Winterthur, Winterthur, Switzerland; Department of Neurology, Spital Linth, Uznach, Switzerland
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