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Nabizadeh F, Seyedmirzaei H, Karami S. Neuroimaging biomarkers and CSF sTREM2 levels in Alzheimer's disease: a longitudinal study. Sci Rep 2024; 14:15318. [PMID: 38961148 DOI: 10.1038/s41598-024-66211-w] [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] [Received: 10/27/2023] [Accepted: 06/28/2024] [Indexed: 07/05/2024] Open
Abstract
Understanding the exact pathophysiological mechanisms underlying the involvement of triggering receptor expressed on myeloid cells 2 (TREM2) related microglia activation is crucial for the development of clinical trials targeting microglia activation at different stages of Alzheimer's disease (AD). Given the contradictory findings in the literature, it is imperative to investigate the longitudinal alterations in cerebrospinal fluid (CSF) soluble TREM2 (sTREM2) levels as a marker for microglia activation, and its potential association with AD biomarkers, in order to address the current knowledge gap. In this study, we aimed to assess the longitudinal changes in CSF sTREM2 levels within the framework of the A/T/N classification system for AD biomarkers and to explore potential associations with AD pathological features, including the presence of amyloid-beta (Aβ) plaques and tau aggregates. The baseline and longitudinal (any available follow-up visit) CSF sTREM2 levels and processed tau-PET and Aβ-PET data of 1001 subjects were recruited from the ADNI database. The participants were classified into four groups based on the A/T/N framework: A+ /TN+ , A+ /TN- , A- /TN+ , and A- /TN- . Linear regression analyses were conducted to assess the relationship between CSF sTREM2 with cognitive performance, tau and Aβ-PET adjusting for age, gender, education, and APOE ε4 status. Based on our analysis there was a significant difference in baseline and rate of change of CSF sTREM2 between ATN groups. While there was no association between baseline CSF sTREM2 and cognitive performance (ADNI-mem), we found that the rate of change of CSF sTREM2 is significantly associated with cognitive performance in the entire cohort but not the ATN groups. We found that the baseline CSF sTREM2 is significantly associated with baseline tau-PET and Aβ-PET rate of change only in the A+ /TN+ group. A significant association was found between the rate of change of CSF sTREM2 and the tau- and Aβ-PET rate of change only in the A+ /TN- group. Our study suggests that the TREM2-related microglia activation and their relations with AD markers and cognitive performance vary the in presence or absence of Aβ and tau pathology. Furthermore, our findings revealed that a faster increase in the level of CSF sTREM2 might attenuate future Aβ plaque formation and tau aggregate accumulation only in the presence of Aβ pathology.
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Affiliation(s)
- Fardin Nabizadeh
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
- Alzheimer's Disease Institute, Tehran, Iran.
| | - Homa Seyedmirzaei
- School of Medicine, Tehran University of Medical Science, Tehran, Iran
- Interdisciplinary Neuroscience Research Program (INRP), Tehran University of Medical Sciences, Tehran, Iran
| | - Shaghayegh Karami
- School of Medicine, Tehran University of Medical Science, Tehran, Iran
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Ghosh M, Lee J, Burke AN, Strong TA, Sagen J, Pearse DD. Sex Dependent Disparities in the Central Innate Immune Response after Moderate Spinal Cord Contusion in Rat. Cells 2024; 13:645. [PMID: 38607084 PMCID: PMC11011714 DOI: 10.3390/cells13070645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/12/2024] [Accepted: 03/29/2024] [Indexed: 04/13/2024] Open
Abstract
Subacute spinal cord injury (SCI) displays a complex pathophysiology associated with pro-inflammation and ensuing tissue damage. Microglia, the resident innate immune cells of the CNS, in concert with infiltrating macrophages, are the primary contributors to SCI-induced inflammation. However, subpopulations of activated microglia can also possess immunomodulatory activities that are essential for tissue remodeling and repair, including the production of anti-inflammatory cytokines and growth factors that are vital for SCI recovery. Recently, reports have provided convincing evidence that sex-dependent differences exist in how microglia function during CNS pathologies and the extent to which these cells contribute to neurorepair and endogenous recovery. Herein we employed flow cytometry and immunohistochemical methods to characterize the phenotype and population dynamics of activated innate immune cells within the injured spinal cord of age-matched male and female rats within the first week (7 days) following thoracic SCI contusion. This assessment included the analysis of pro- and anti-inflammatory markers, as well as the expression of critical immunomodulatory kinases, including P38 MAPK, and transcription factors, such as NFκB, which play pivotal roles in injury-induced inflammation. We demonstrate that activated microglia from the injured spinal cord of female rats exhibited a significantly diminutive pro-inflammatory response, but enhanced anti-inflammatory activity compared to males. These changes included lower levels of iNOS and TLR4 expression but increased levels of ARG-1 and CD68 in females after SCI. The altered expression of these markers is indicative of a disparate secretome between the microglia of males and females after SCI and that the female microglia possesses higher phagocytic capabilities (increased CD68). The examination of immunoregulatory kinases and transcription factors revealed that female microglia had higher levels of phosphorylated P38Thr180/Tyr182 MAPK and nuclear NFκB pp50Ser337 but lower amounts of nuclear NFκB pp65Ser536, suggestive of an attenuated pro-inflammatory phenotype in females compared to males after SCI. Collectively, this work provides novel insight into some of the sex disparities that exist in the innate immune response after SCI and indicates that sex is an important variable when designing and testing new therapeutic interventions or interpretating positive or negative responses to an intervention.
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Affiliation(s)
- Mousumi Ghosh
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (J.L.); (A.N.B.); (T.A.S.); (J.S.); (D.D.P.)
- The Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Veterans Affairs, Veterans Affairs Medical Center, Miami, FL 33136, USA
| | - Jinyoung Lee
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (J.L.); (A.N.B.); (T.A.S.); (J.S.); (D.D.P.)
| | - Ashley N. Burke
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (J.L.); (A.N.B.); (T.A.S.); (J.S.); (D.D.P.)
| | - Thomas A. Strong
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (J.L.); (A.N.B.); (T.A.S.); (J.S.); (D.D.P.)
| | - Jacqueline Sagen
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (J.L.); (A.N.B.); (T.A.S.); (J.S.); (D.D.P.)
- The Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Damien D. Pearse
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (J.L.); (A.N.B.); (T.A.S.); (J.S.); (D.D.P.)
- The Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Veterans Affairs, Veterans Affairs Medical Center, Miami, FL 33136, USA
- The Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
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Lynch MA. A case for seeking sex-specific treatments in Alzheimer's disease. Front Aging Neurosci 2024; 16:1346621. [PMID: 38414633 PMCID: PMC10897030 DOI: 10.3389/fnagi.2024.1346621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 01/15/2024] [Indexed: 02/29/2024] Open
Abstract
There is no satisfactory explanation for the sex-related differences in the incidence of many diseases and this is also true of Alzheimer's disease (AD), where females have a higher lifetime risk of developing the disease and make up about two thirds of the AD patient population. The importance of understanding the cause(s) that account for this disproportionate distribution cannot be overestimated, and is likely to be a significant factor in the search for therapeutic strategies that will combat the disease and, furthermore, potentially point to a sex-targeted approach to treatment. This review considers the literature in the context of what is known about the impact of sex on processes targeted by drugs that are in clinical trial for AD, and existing knowledge on differing responses of males and females to these drugs. Current knowledge strongly supports the view that trials should make assessing sex-related difference in responses a priority with a focus on exploring the sex-stratified treatments.
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Papazoglou A, Henseler C, Weickhardt S, Teipelke J, Papazoglou P, Daubner J, Schiffer T, Krings D, Broich K, Hescheler J, Sachinidis A, Ehninger D, Scholl C, Haenisch B, Weiergräber M. Sex- and region-specific cortical and hippocampal whole genome transcriptome profiles from control and APP/PS1 Alzheimer's disease mice. PLoS One 2024; 19:e0296959. [PMID: 38324617 PMCID: PMC10849391 DOI: 10.1371/journal.pone.0296959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 12/21/2023] [Indexed: 02/09/2024] Open
Abstract
A variety of Alzheimer's disease (AD) mouse models has been established and characterized within the last decades. To get an integrative view of the sophisticated etiopathogenesis of AD, whole genome transcriptome studies turned out to be indispensable. Here we carried out microarray data collection based on RNA extracted from the retrosplenial cortex and hippocampus of age-matched, eight months old male and female APP/PS1 AD mice and control animals to perform sex- and brain region specific analysis of transcriptome profiles. The results of our studies reveal novel, detailed insight into differentially expressed signature genes and related fold changes in the individual APP/PS1 subgroups. Gene ontology and Venn analysis unmasked that intersectional, upregulated genes were predominantly involved in, e.g., activation of microglial, astrocytic and neutrophilic cells, innate immune response/immune effector response, neuroinflammation, phagosome/proteasome activation, and synaptic transmission. The number of (intersectional) downregulated genes was substantially less in the different subgroups and related GO categories included, e.g., the synaptic vesicle docking/fusion machinery, synaptic transmission, rRNA processing, ubiquitination, proteasome degradation, histone modification and cellular senescence. Importantly, this is the first study to systematically unravel sex- and brain region-specific transcriptome fingerprints/signature genes in APP/PS1 mice. The latter will be of central relevance in future preclinical and clinical AD related studies, biomarker characterization and personalized medicinal approaches.
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Affiliation(s)
- Anna Papazoglou
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Christina Henseler
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Sandra Weickhardt
- Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Jenni Teipelke
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Panagiota Papazoglou
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Johanna Daubner
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Teresa Schiffer
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Damian Krings
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Karl Broich
- Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Jürgen Hescheler
- Faculty of Medicine, Institute of Neurophysiology, University of Cologne, Cologne, Germany
- Center of Physiology and Pathophysiology, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Agapios Sachinidis
- Faculty of Medicine, Institute of Neurophysiology, University of Cologne, Cologne, Germany
- Center of Physiology and Pathophysiology, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Dan Ehninger
- Translational Biogerontology, German Center for Neurodegenerative Diseases (Deutsches Zentrum für Neurodegenerative Erkrankungen, DZNE), Bonn, Germany
- German Center for Neurodegenerative Diseases (Deutsches Zentrum für Neurodegenerative Erkrankungen, DZNE), Bonn, Germany
| | - Catharina Scholl
- Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
| | - Britta Haenisch
- Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
- German Center for Neurodegenerative Diseases (Deutsches Zentrum für Neurodegenerative Erkrankungen, DZNE), Bonn, Germany
- Center for Translational Medicine, Medical Faculty, University of Bonn, Bonn, Germany
| | - Marco Weiergräber
- Experimental Neuropsychopharmacology, Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
- Federal Institute for Drugs and Medical Devices (Bundesinstitut für Arzneimittel und Medizinprodukte, BfArM), Bonn, Germany
- Faculty of Medicine, Institute of Neurophysiology, University of Cologne, Cologne, Germany
- Center of Physiology and Pathophysiology, Faculty of Medicine, University of Cologne, Cologne, Germany
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Biechele G, Rauchmann BS, Janowitz D, Buerger K, Franzmeier N, Weidinger E, Guersel S, Schuster S, Finze A, Harris S, Lindner S, Albert NL, Wetzel C, Rupprecht R, Rominger A, Palleis C, Katzdobler S, Burow L, Kurz C, Zaganjori M, Trappmann LK, Goldhardt O, Grimmer T, Haeckert J, Keeser D, Stoecklein S, Morenas-Rodriguez E, Bartenstein P, Levin J, Höglinger GU, Simons M, Perneczky R, Brendel M. Associations between sex, body mass index and the individual microglial response in Alzheimer's disease. J Neuroinflammation 2024; 21:30. [PMID: 38263017 PMCID: PMC10804830 DOI: 10.1186/s12974-024-03020-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/11/2024] [Indexed: 01/25/2024] Open
Abstract
BACKGROUND AND OBJECTIVES 18-kDa translocator protein position-emission-tomography (TSPO-PET) imaging emerged for in vivo assessment of neuroinflammation in Alzheimer's disease (AD) research. Sex and obesity effects on TSPO-PET binding have been reported for cognitively normal humans (CN), but such effects have not yet been systematically evaluated in patients with AD. Thus, we aimed to investigate the impact of sex and obesity on the relationship between β-amyloid-accumulation and microglial activation in AD. METHODS 49 patients with AD (29 females, all Aβ-positive) and 15 Aβ-negative CN (8 female) underwent TSPO-PET ([18F]GE-180) and β-amyloid-PET ([18F]flutemetamol) imaging. In 24 patients with AD (14 females), tau-PET ([18F]PI-2620) was additionally available. The brain was parcellated into 218 cortical regions and standardized-uptake-value-ratios (SUVr, cerebellar reference) were calculated. Per region and tracer, the regional increase of PET SUVr (z-score) was calculated for AD against CN. The regression derived linear effect of regional Aβ-PET on TSPO-PET was used to determine the Aβ-plaque-dependent microglial response (slope) and the Aβ-plaque-independent microglial response (intercept) at the individual patient level. All read-outs were compared between sexes and tested for a moderation effect of sex on associations with body mass index (BMI). RESULTS In AD, females showed higher mean cortical TSPO-PET z-scores (0.91 ± 0.49; males 0.30 ± 0.75; p = 0.002), while Aβ-PET z-scores were similar. The Aβ-plaque-independent microglial response was stronger in females with AD (+ 0.37 ± 0.38; males with AD - 0.33 ± 0.87; p = 0.006), pronounced at the prodromal stage. On the contrary, the Aβ-plaque-dependent microglial response was not different between sexes. The Aβ-plaque-independent microglial response was significantly associated with tau-PET in females (Braak-II regions: r = 0.757, p = 0.003), but not in males. BMI and the Aβ-plaque-independent microglial response were significantly associated in females (r = 0.44, p = 0.018) but not in males (BMI*sex interaction: F(3,52) = 3.077, p = 0.005). CONCLUSION While microglia response to fibrillar Aβ is similar between sexes, women with AD show a stronger Aβ-plaque-independent microglia response. This sex difference in Aβ-independent microglial activation may be associated with tau accumulation. BMI is positively associated with the Aβ-plaque-independent microglia response in females with AD but not in males, indicating that sex and obesity need to be considered when studying neuroinflammation in AD.
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Affiliation(s)
- Gloria Biechele
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Boris-Stephan Rauchmann
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
- Institute of Neuroradiology, LMU University Hospital, LMU Munich, Munich, Germany
- Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, Sheffield, UK
| | - Daniel Janowitz
- Institute for Stroke and Dementia Research, LMU University Hospital, LMU Munich, Munich, Germany
| | - Katharina Buerger
- Institute for Stroke and Dementia Research, LMU University Hospital, LMU Munich, Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - Nicolai Franzmeier
- Institute for Stroke and Dementia Research, LMU University Hospital, LMU Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, Institute of Neuroscience and Physiology, University of Gothenburg, Mölndal, Gothenburg, Sweden
| | - Endy Weidinger
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Selim Guersel
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
| | - Sebastian Schuster
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
| | - Anika Finze
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
| | - Stefanie Harris
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
| | - Simon Lindner
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
| | - Nathalie L Albert
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
| | - Christian Wetzel
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Rainer Rupprecht
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Axel Rominger
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
- Department of Nuclear Medicine, University of Bern, Inselspital, Bern, Switzerland
| | - Carla Palleis
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Sabrina Katzdobler
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Lena Burow
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
| | - Carolin Kurz
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
| | - Mirlind Zaganjori
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
| | - Lena-Katharina Trappmann
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
| | - Oliver Goldhardt
- Department of Psychiatry and Psychotherapy, School of Medicine and Health, Technical University Munich, Klinikum Rechts Der Isar, Munich, Germany
| | - Timo Grimmer
- Department of Psychiatry and Psychotherapy, School of Medicine and Health, Technical University Munich, Klinikum Rechts Der Isar, Munich, Germany
| | - Jan Haeckert
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Daniel Keeser
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
| | - Sophia Stoecklein
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | | | - Peter Bartenstein
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Johannes Levin
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Günter U Höglinger
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Mikael Simons
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- Institute of Neuronal Cell Biology, TU Munich, Munich, Germany
| | - Robert Perneczky
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, Sheffield, UK
- Ageing Epidemiology (AGE) Research Unit, School of Public Health, Imperial College London, London, UK
| | - Matthias Brendel
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, University of Munich, Marchioninstraße 15, 81377, Munich, Germany.
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.
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Curtis AF, Costa AN, Musich M, Schmiedeler A, Jagannathan S, Connell M, Atkinson A, Miller MB, McCrae CS. Sex as a moderator of the sleep and cognition relationship in middle-aged and older adults: A preliminary investigation. Behav Sleep Med 2024; 22:14-27. [PMID: 36809223 DOI: 10.1080/15402002.2023.2177293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVES Despite known sex differences in the prevalence of sleep disturbance and cognitive impairment, research investigating sex differences in sleep/cognition associations is limited. We examined sex as a moderator of associations between self-reported sleep and objective cognition in middle-aged/older adults. METHODS Adults aged 50+ (32 men/31 women, Mage = 63.6 ± 7.7) completed the Pittsburgh Sleep Quality Index (PSQI) and cognitive tasks: Stroop (processing speed, inhibition), Posner (spatial attentional orienting) and Sternberg (working memory). Multiple regressions examined whether PSQI metrics (global score, sleep quality ratings, sleep duration, sleep efficiency) were independently or interactively (with sex) associated with cognition, controlling for age and education. RESULTS Sex interacted with sleep quality ratings in its association with endogenous spatial attentional orienting (∆R2 = .10, p = .01). Worse ratings of sleep quality were associated with worse orienting in women (B = 22.73, SE = 9.53, p = .02), not men (p = .24). Sex interacted with sleep efficiency in its associations with processing speed (∆R2 = .06, p = .04). Lower sleep efficiency was associated with slower Stroop control trial performance in women (B = -15.91, SE = 7.57, p = .04), not men (p = .48). CONCLUSIONS Preliminary findings suggest middle-aged/older women are more vulnerable to associations between poor sleep quality and low sleep efficiency on spatial attentional orienting and processing speed, respectively. Future studies in larger samples investigating sex-specific prospective sleep and cognition associations are warranted.
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Affiliation(s)
- Ashley F Curtis
- College of Nursing, University of South Florida, Tampa, Florida, USA
- Department of Psychiatry, University of Missouri-Columbia, Columbia, Missouri, USA
- Department of Psychological Sciences, University of Missouri-Columbia, Columbia, Missouri, USA
| | - Amy N Costa
- Department of Psychological Sciences, University of Missouri-Columbia, Columbia, Missouri, USA
| | - Madison Musich
- Department of Psychiatry, University of Missouri-Columbia, Columbia, Missouri, USA
| | - Anthony Schmiedeler
- Department of Psychiatry, University of Missouri-Columbia, Columbia, Missouri, USA
- Department of Educational, School, and Counseling Psychology, University of Missouri-Columbia, Columbia, Missouri, USA
| | | | - Maggie Connell
- Department of Psychiatry, University of Missouri-Columbia, Columbia, Missouri, USA
| | - Angela Atkinson
- Department of Psychiatry, University of Missouri-Columbia, Columbia, Missouri, USA
| | - Mary Beth Miller
- Department of Psychiatry, University of Missouri-Columbia, Columbia, Missouri, USA
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Saloner R, VandeVrede L, Asken BM, Paolillo EW, Gontrum EQ, Wolf A, Lario‐Lago A, Milà‐Alomà M, Triana‐Baltzer G, Kolb HC, Dubal DB, Rabinovici GD, Miller BL, Boxer AL, Casaletto KB, Kramer JH. Plasma phosphorylated tau-217 exhibits sex-specific prognostication of cognitive decline and brain atrophy in cognitively unimpaired adults. Alzheimers Dement 2024; 20:376-387. [PMID: 37639492 PMCID: PMC10843677 DOI: 10.1002/alz.13454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/04/2023] [Accepted: 08/07/2023] [Indexed: 08/31/2023]
Abstract
INTRODUCTION Accumulating evidence indicates disproportionate tau burden and tau-related clinical progression in females. However, sex differences in plasma phosphorylated tau (p-tau)217 prediction of subclinical cognitive and brain changes are unknown. METHODS We measured baseline plasma p-tau217, glial fibrillary acidic protein (GFAP), and neurofilament light (NfL) in 163 participants (85 cognitively unimpaired [CU], 78 mild cognitive impairment [MCI]). In CU, linear mixed effects models examined sex differences in plasma biomarker prediction of longitudinal domain-specific cognitive decline and brain atrophy. Cognitive models were repeated in MCI. RESULTS In CU females, baseline plasma p-tau217 predicted verbal memory and medial temporal lobe trajectories such that trajectories significantly declined once p-tau217 concentrations surpassed 0.053 pg/ml, a threshold that corresponded to early levels of cortical amyloid aggregation in secondary amyloid positron emission tomography analyses. CU males exhibited similar rates of cognitive decline and brain atrophy, but these trajectories were not dependent on plasma p-tau217. Plasma GFAP and NfL exhibited similar female-specific prediction of medial temporal lobe atrophy in CU. Plasma p-tau217 exhibited comparable prediction of cognitive decline across sex in MCI. DISCUSSION Plasma p-tau217 may capture earlier Alzheimer's disease (AD)-related cognitive and brain atrophy hallmarks in females compared to males, possibly reflective of increased susceptibility to AD pathophysiology.
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Affiliation(s)
- Rowan Saloner
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Lawren VandeVrede
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Breton M. Asken
- Department of Clinical and Health PsychologyUniversity of FloridaGainesvilleFloridaUSA
| | - Emily W. Paolillo
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Eva Q. Gontrum
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Amy Wolf
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Argentina Lario‐Lago
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Marta Milà‐Alomà
- Department of Radiology and Biomedical ImagingUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | | | - Hartmuth C. Kolb
- Neuroscience BiomarkersJanssen Research & Development, LLCSan DiegoCaliforniaUSA
| | - Dena B. Dubal
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Gil D. Rabinovici
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
- Department of Radiology and Biomedical ImagingUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Bruce L. Miller
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Adam L. Boxer
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Kaitlin B. Casaletto
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Joel H. Kramer
- Department of NeurologyWeill Institute for NeurosciencesUniversity of California, San FranciscoSan FranciscoCaliforniaUSA
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8
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Scott MR, Edwards NC, Properzi MJ, Jacobs HIL, Price JC, Lois C, Farrell ME, Hanseeuw BJ, Thibault EG, Rentz DM, Johnson KA, Sperling RA, Schultz AP, Buckley RF. Contribution of extracerebral tracer retention and partial volume effects to sex differences in Flortaucipir-PET signal. J Cereb Blood Flow Metab 2024; 44:131-141. [PMID: 37728659 PMCID: PMC10905641 DOI: 10.1177/0271678x231196978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 05/24/2023] [Accepted: 06/22/2023] [Indexed: 09/21/2023]
Abstract
Clinically normal females exhibit higher 18F-flortaucipir (FTP)-PET signal than males across the cortex. However, these sex differences may be explained by neuroimaging idiosyncrasies such as off-target extracerebral tracer retention or partial volume effects (PVEs). 343 clinically normal participants (female = 58%; mean[SD]=73.8[8.5] years) and 55 patients with mild cognitive impairment (female = 38%; mean[SD] = 76.9[7.3] years) underwent cross-sectional FTP-PET. We parcellated extracerebral FreeSurfer areas based on proximity to cortical ROIs. Sex differences in cortical tau were then estimated after accounting for local extracerebral retention. We simulated PVE by convolving group-level standardized uptake value ratio means in each ROI with 6 mm Gaussian kernels and compared the sexes across ROIs post-smoothing. Widespread sex differences in extracerebral retention were observed. Although attenuating sex differences in cortical tau-PET signal, covarying for extracerebral retention did not impact the largest sex differences in tau-PET signal. Differences in PVE were observed in both female and male directions with no clear sex-specific bias. Our findings suggest that sex differences in FTP are not solely attributed to off-target extracerebral retention or PVE, consistent with the notion that sex differences in medial temporal and neocortical tau are biologically driven. Future work should investigate sex differences in regional cerebral blood flow kinetics and longitudinal tau-PET.
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Affiliation(s)
- Matthew R Scott
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Department of Biostatistics, School of Public Health, Boston University, Boston, MA, USA
| | - Natalie C Edwards
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Columbia University, New York City, NY, USA
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, New York City, NY, USA
| | - Michael J Properzi
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Heidi IL Jacobs
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Faculty of Health, Medicine and Life Sciences, School for Mental Health and Neuroscience, Alzheimer Centre Limburg, Maastricht University, Maastricht, The Netherlands
| | - Julie C Price
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Cristina Lois
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Michelle E Farrell
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Bernard J Hanseeuw
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Department of Neurology, Cliniques Universitaires SaintLuc, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Emma G Thibault
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Dorene M Rentz
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Department of Neurology, Center for Alzheimer Research and Treatment, Brigham and Women’s Hospital, Boston, MA, USA
| | - Keith A Johnson
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Department of Neurology, Center for Alzheimer Research and Treatment, Brigham and Women’s Hospital, Boston, MA, USA
| | - Reisa A Sperling
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Department of Neurology, Center for Alzheimer Research and Treatment, Brigham and Women’s Hospital, Boston, MA, USA
| | - Aaron P Schultz
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Rachel F Buckley
- Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
- Department of Neurology, Center for Alzheimer Research and Treatment, Brigham and Women’s Hospital, Boston, MA, USA
- Melbourne School of Psychological Science, University of Melbourne, Melbourne, VIC, Australia
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9
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Pait MC, Kaye SD, Su Y, Kumar A, Singh S, Gironda SC, Vincent S, Anwar M, Carroll CM, Snipes JA, Lee J, Furdui CM, Deep G, Macauley SL. Novel method for collecting hippocampal interstitial fluid extracellular vesicles (EV ISF ) reveals sex-dependent changes in microglial EV proteome in response to Aβ pathology. J Extracell Vesicles 2024; 13:e12398. [PMID: 38191961 PMCID: PMC10774707 DOI: 10.1002/jev2.12398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 11/29/2023] [Indexed: 01/10/2024] Open
Abstract
Brain-derived extracellular vesicles (EVs) play an active role in Alzheimer's disease (AD), relaying important physiological information about their host tissues. The internal cargo of EVs is protected from degradation, making EVs attractive AD biomarkers. However, it is unclear how circulating EVs relate to EVs isolated from disease-vulnerable brain regions. We developed a novel method for collecting EVs from the hippocampal interstitial fluid (ISF) of live mice. EVs (EVISF ) were isolated via ultracentrifugation and characterized by nanoparticle tracking analysis, immunogold labelling, and flow cytometry. Mass spectrometry and proteomic analyses were performed on EVISF cargo. EVISF were 40-150 nm in size and expressed CD63, CD9, and CD81. Using a model of cerebral amyloidosis (e.g., APPswe, PSEN1dE9 mice), we found protein concentration increased but protein diversity decreased with Aβ deposition. Genotype, age, and Aβ deposition modulated proteostasis- and immunometabolic-related pathways. Changes in the microglial EVISF proteome were sexually dimorphic and associated with a differential response of plaque associated microglia. We found that female APP/PS1 mice have more amyloid plaques, less plaque associated microglia, and a less robust- and diverse- EVISF microglial proteome. Thus, in vivo microdialysis is a novel technique for collecting EVISF and offers a unique opportunity to explore the role of EVs in AD.
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Affiliation(s)
- Morgan C. Pait
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Sarah D. Kaye
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Yixin Su
- Department of Cancer BiologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Ashish Kumar
- Department of Cancer BiologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Sangeeta Singh
- Department of Cancer BiologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Stephen C. Gironda
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Samantha Vincent
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Maria Anwar
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Caitlin M. Carroll
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - James Andy Snipes
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Jingyun Lee
- Department of Internal MedicineSection on Molecular MedicineWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Proteomics and Metabolomics Shared ResourceWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Cristina M. Furdui
- Department of Internal MedicineSection on Molecular MedicineWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Proteomics and Metabolomics Shared ResourceWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Atrium Health Wake Forest Baptist Comprehensive Cancer CenterWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Gagan Deep
- Department of Cancer BiologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Atrium Health Wake Forest Baptist Comprehensive Cancer CenterWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Center for Research on Substance Use and AddictionWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- J Paul Sticht Center for Healthy Aging and Alzheimer's PreventionWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Shannon L. Macauley
- Department of Physiology & PharmacologyWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- J Paul Sticht Center for Healthy Aging and Alzheimer's PreventionWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Internal MedicineWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Alzheimer's Disease Research CenterWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Center for Diabetes and MetabolismWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Cardiovascular Sciences CenterWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
- Department of PhysiologyUniversity of KentuckyLexingtonKentuckyUSA
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10
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Paolillo EW, Saloner R, VandeBunte A, Lee S, Bennett DA, Casaletto KB. Multimodal lifestyle engagement patterns support cognitive stability beyond neuropathological burden. Alzheimers Res Ther 2023; 15:221. [PMID: 38111051 PMCID: PMC10726589 DOI: 10.1186/s13195-023-01365-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 12/03/2023] [Indexed: 12/20/2023]
Abstract
BACKGROUND Modifiable lifestyle behaviors account for a large proportion of dementia risk. However, the combined contributions of multidomain lifestyle patterns to cognitive aging are poorly understood, as most studies have examined individual lifestyle behaviors in isolation and without neuropathological characterization. This study examined data-driven patterns of lifestyle behaviors across multiple domains among older adults and tested their associations with disease-specific neuropathological burden and cognitive decline. METHODS Participants included 2059 older adults enrolled in the longitudinal Memory and Aging Project (MAP) at the Rush Alzheimer's Disease Center; none of whom had dementia at baseline (73% no cognitive impairment (NCI), 27% mild cognitive impairment [MCI]). All participants completed cognitive testing annually. Lifestyle factors were measured during at least one visit and included (1) actigraphy-measured physical activity, as well as self-reported (2) sleep quality, (3) life space, (4) cognitive activities, (5) social activities, and (6) social network. A subset of participants (n = 791) had autopsy data for which burden of Alzheimer's disease (AD), cerebrovascular disease (CVD), Lewy body disease, and hippocampal sclerosis/TDP-43 was measured. Latent profile analysis across all 2059 participants identified distinct subgroups (i.e., classes) of lifestyle patterns. Linear mixed-effects models examined relationships between lifestyle classes and global cognitive trajectories, with and without covarying for all neuropathologies. Classes were also compared on rates of incident MCI/dementia. RESULTS Five classes were identified: Class 1Low Life Space (lowest lifestyle engagement), Class 2PA (high physical activity), Class 3Low Avg (low to average lifestyle engagement), Class 4Balanced (high average lifestyle engagement), and Class 5Social (large social network). Classes 4Balanced and 5Social had the lowest AD burden, and Class 2PA had the lowest CVD burden. Classes 2-5 had significantly less steep global cognitive decline compared to Class 1Low Life Space, with comparable effect sizes before and after covarying for neuropathological burden. Classes 4Balanced and 5Social exhibited the lowest rates of incident MCI/dementia. CONCLUSIONS Lifestyle behavior patterns among older adults account for differential rates of cognitive decline and clinical progression. Those with at least average engagement across all lifestyle domains exhibit greater cognitive stability after adjustment for neuropathology, highlighting the importance of engagement in multiple healthy lifestyle behaviors for later life cognitive health.
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Affiliation(s)
- Emily W Paolillo
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco, CA, 94158, USA.
| | - Rowan Saloner
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco, CA, 94158, USA
| | - Anna VandeBunte
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco, CA, 94158, USA
| | - Shannon Lee
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco, CA, 94158, USA
| | - David A Bennett
- Department of Neurological Sciences, Rush Medical College, Chicago, IL, USA
| | - Kaitlin B Casaletto
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco, CA, 94158, USA
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11
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Riggs PK, Anderson AM, Tang B, Rubin LH, Morgello S, Marra CM, Gelman BB, Clifford DB, Franklin D, Heaton RK, Ellis RJ, Fennema-Notestine C, Letendre SL. Elevated Plasma Protein Carbonyl Concentration Is Associated with More Abnormal White Matter in People with HIV. Viruses 2023; 15:2410. [PMID: 38140650 PMCID: PMC10747698 DOI: 10.3390/v15122410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/23/2023] [Accepted: 12/09/2023] [Indexed: 12/24/2023] Open
Abstract
Structural brain abnormalities, including those in white matter (WM), remain common in people with HIV (PWH). Their pathogenesis is uncertain and may reflect multiple etiologies. Oxidative stress is associated with inflammation, HIV, and its comorbidities. The post-translational carbonylation of proteins results from oxidative stress, and circulating protein carbonyls may reflect this. In this cross-sectional analysis, we evaluated the associations between protein carbonyls and a panel of soluble biomarkers of neuronal injury and inflammation in plasma (N = 45) and cerebrospinal fluid (CSF, n = 32) with structural brain MRI. The volume of abnormal WM was normalized for the total WM volume (nAWM). In this multisite project, all regression models were adjusted for the scanner. The candidate covariates included demographics, HIV disease characteristics, and comorbidities. Participants were PWH on virally suppressive antiretroviral therapy (ART) and were mostly white (64.4%) men (88.9%), with a mean age of 56.8 years. In unadjusted analyses, more nAWM was associated with higher plasma protein carbonyls (p = 0.002) and higher CCL2 (p = 0.045). In the adjusted regression models for nAWM, the association with plasma protein carbonyls remained significant (FDR p = 0.018). Protein carbonyls in plasma may be a valuable biomarker of oxidative stress and its associated adverse health effects, including within the central nervous system. If confirmed, these findings would support the hypothesis that reducing oxidative stress could treat or prevent WM injury in PWH.
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Affiliation(s)
- Patricia K. Riggs
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California San Diego, San Diego, CA 92093, USA
| | - Albert M. Anderson
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Bin Tang
- Department of Psychiatry, University of California San Diego, San Diego, CA 92093, USA
| | - Leah H. Rubin
- Departments of Neurology, Psychiatry and Behavioral Sciences, and Epidemiology, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Susan Morgello
- Departments of Neurology, Neuroscience, and Pathology, Mt Sinai School of Medicine, New York, NY 10029, USA
| | - Christina M. Marra
- Department of Neurology, University of Washington, Seattle, WA 98195, USA
| | - Benjamin B. Gelman
- Departments of Pathology, and Neuroscience & Cell Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - David B. Clifford
- Department of Neurology, Washington University in St Louis, St Louis, MO 63110, USA
| | - Donald Franklin
- Department of Psychiatry, University of California San Diego, San Diego, CA 92093, USA
| | - Robert K. Heaton
- Department of Psychiatry, University of California San Diego, San Diego, CA 92093, USA
| | - Ronald J. Ellis
- Department of Psychiatry, University of California San Diego, San Diego, CA 92093, USA
- Department of Neurosciences, University of California San Diego, San Diego, CA 92093, USA
| | - Christine Fennema-Notestine
- Department of Psychiatry, University of California San Diego, San Diego, CA 92093, USA
- Department of Radiology, University of California San Diego, San Diego, CA 92093, USA
| | - Scott L. Letendre
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California San Diego, San Diego, CA 92093, USA
- Department of Psychiatry, University of California San Diego, San Diego, CA 92093, USA
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12
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Nabizadeh F. sTREM2 is associated with attenuated tau aggregate accumulation in the presence of amyloid-β pathology. Brain Commun 2023; 5:fcad286. [PMID: 37942087 PMCID: PMC10629471 DOI: 10.1093/braincomms/fcad286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/16/2023] [Accepted: 10/23/2023] [Indexed: 11/10/2023] Open
Abstract
Triggering Receptor Expressed on Myeloid Cell 2 (TREM2) plays a crucial role in the transition of microglia from a state of homeostasis to a state associated with the disease. Mutations in TREM2 are strongly linked with a higher risk of developing neurodegenerative diseases, including Alzheimer's disease. There have been contradictory findings regarding the potential detrimental or protective effects of microglial activation and TREM2-related microglial responses in Alzheimer's disease. Although previous studies reported increased CSF soluble TREM2 (sTREM2) in different clinical stages of Alzheimer's disease, the exact association between Alzheimer's disease hallmarks such as amyloid-beta and tau pathology remains unclear. In the present study, I aimed to investigate the association between TREM2-related microglial responses and tau accumulation in the presence and absence of amyloid-beta pathology in order to give a better view of the role of microglial activation in Alzheimer's disease development. Imaging data of 178 non-demented participants including 107 amyloid-beta-negative participants, 71 amyloid-beta-positive were recruited from Alzheimer's disease Neuroimaging Initiative. The CSF sTREM2 was used as an in vivo indicator of microglial responses associated with TREM2. Furthermore, I used longitudinal tau-PET and resting-state functional MRI connectomes in order to investigate the association of TREM2-related microglial activation and tau spreading through functional connections. A higher level of sTREM2 was associated with slower tau aggregate accumulation in non-demented amyloid-beta-positive. Furthermore, measuring the tau spreading through inter-connected regions using functional MRI connectomes confirms that the TREM2-related microglial activity might be a protective factor against tau pathology in brain tissue. These findings demonstrate that in individuals with initial amyloid-beta abnormalities, TREM2-related microglial activation is linked to reduced regional accumulation of tau aggregates and also, spreading across inter-connected brain regions, as evaluated through functional MRI connectomes during the early stages of Alzheimer's disease.
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Affiliation(s)
- Fardin Nabizadeh
- School of Medicine, Iran University of Medical Sciences, Tehran, 1449614535, Iran
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13
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Rahmani R, Rambarack N, Singh J, Constanti A, Ali AB. Age-Dependent Sex Differences in Perineuronal Nets in an APP Mouse Model of Alzheimer's Disease Are Brain Region-Specific. Int J Mol Sci 2023; 24:14917. [PMID: 37834366 PMCID: PMC10574007 DOI: 10.3390/ijms241914917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia, which disproportionately affects women. AD symptoms include progressive memory loss associated with amyloid-β (Aβ) plaques and dismantled synaptic mechanisms. Perineuronal nets (PNNs) are important components of the extracellular matrix with a critical role in synaptic stabilisation and have been shown to be influenced by microglia, which enter an activated state during AD. This study aimed to investigate whether sex differences affected the density of PNNs alongside the labelling of microglia and Aβ plaques density.We performed neurochemistry experiments using acute brain slices from both sexes of the APPNL-F/NL-F mouse model of AD, aged-matched (2-5 and 12-16 months) to wild-type mice, combined with a weighted gene co-expression network analysis (WGCNA). The lateral entorhinal cortex (LEC) and hippocampal CA1, which are vulnerable during early AD pathology, were investigated and compared to the presubiculum (PRS), a region unscathed by AD pathology. The highest density of PNNs was found in the LEC and PRS regions of aged APPNL-F/NL-F mice with a region-specific sex differences. Analysis of the CA1 region using multiplex-fluorescent images from aged APPNL-F/NL-F mice showed regions of dense Aβ plaques near clusters of CD68, indicative of activated microglia and PNNs. This was consistent with the results of WGCNA performed on normalised data on microglial cells isolated from age-matched, late-stage male and female wild-type and APP knock-in mice, which revealed one microglial module that showed differential expression associated with tissue, age, genotype, and sex, which showed enrichment for fc-receptor-mediated phagocytosis. Our data are consistent with the hypothesis that sex-related differences contribute to a disrupted interaction between PNNs and microglia in specific brain regions associated with AD pathogenesis.
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Affiliation(s)
| | | | | | | | - Afia B. Ali
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; (R.R.); (N.R.); (J.S.); (A.C.)
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14
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Thaker AA, McConnell BV, Rogers DM, Carlson NE, Coughlan C, Jensen AM, Lopez-Paniagua D, Holden SK, Pressman PS, Pelak VS, Filley CM, Potter H, Solano DA, Heffernan KS, Bettcher BM. Astrogliosis, neuritic microstructure, and sex effects: GFAP is an indicator of neuritic orientation in women. Brain Behav Immun 2023; 113:124-135. [PMID: 37394144 PMCID: PMC10584366 DOI: 10.1016/j.bbi.2023.06.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 06/14/2023] [Accepted: 06/27/2023] [Indexed: 07/04/2023] Open
Abstract
BACKGROUND Data from human studies suggest that immune dysregulation is associated with Alzheimer's disease (AD) pathology and cognitive decline and that neurites may be affected early in the disease trajectory. Data from animal studies further indicate that dysfunction in astrocytes and inflammation may have a pivotal role in facilitating dendritic damage, which has been linked with negative cognitive outcomes. To elucidate these relationships further, we have examined the relationship between astrocyte and immune dysregulation, AD-related pathology, and neuritic microstructure in AD-vulnerable regions in late life. METHODS We evaluated panels of immune, vascular, and AD-related protein markers in blood and conducted in vivo multi-shell neuroimaging using Neurite Orientation Dispersion and Density Imaging (NODDI) to assess indices of neuritic density (NDI) and dispersion (ODI) in brain regions vulnerable to AD in a cohort of older adults (n = 109). RESULTS When examining all markers in tandem, higher plasma GFAP levels were strongly related to lower neurite dispersion (ODI) in grey matter. No biomarker associations were found with higher neuritic density. Associations between GFAP and neuritic microstructure were not significantly impacted by symptom status, APOE status, or plasma Aβ42/40 ratio; however, there was a large sex effect observed for neurite dispersion, wherein negative associations between GFAP and ODI were only observed in females. DISCUSSION This study provides a comprehensive, concurrent appraisal of immune, vascular, and AD-related biomarkers in the context of advanced grey matter neurite orientation and dispersion methodology. Sex may be an important modifier of the complex associations between astrogliosis, immune dysregulation, and brain microstructure in older adults.
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Affiliation(s)
- Ashesh A Thaker
- Department of Radiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Brice V McConnell
- Department of Neurology, Behavioral Neurology Section, University of Colorado Alzheimer's & Cognition Center, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Dustin M Rogers
- Department of Biostatistics and Informatics, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Nichole E Carlson
- Department of Biostatistics and Informatics, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Christina Coughlan
- Department of Neurology, University of Colorado Alzheimer's & Cognition Center, Linda Crnic Institute for Down Syndrome, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Alexandria M Jensen
- Quantitative Sciences Unit, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Dan Lopez-Paniagua
- Department of Radiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Samantha K Holden
- Department of Neurology, Behavioral Neurology Section, University of Colorado Alzheimer's & Cognition Center, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Peter S Pressman
- Department of Neurology, Behavioral Neurology Section, University of Colorado Alzheimer's & Cognition Center, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Victoria S Pelak
- Department of Neurology, Behavioral Neurology Section, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Ophthalmology, Sue Anschutz-Rodgers University of Colorado Eye Center, University of Colorado School of Medicine, Aurora, CO, USA
| | - Christopher M Filley
- Behavioral Neurology Section, Departments of Neurology and Psychiatry, University of Colorado Alzheimer's & Cognition Center, Marcus Institute for Brain Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Huntington Potter
- Department of Neurology, University of Colorado Alzheimer's & Cognition Center, Linda Crnic Institute for Down Syndrome, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - D Adriana Solano
- Department of Neurology, University of Colorado Alzheimer's & Cognition Center, Linda Crnic Institute for Down Syndrome, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kate S Heffernan
- Division of Neuropharmacology and Neurological Disorders, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Brianne M Bettcher
- Department of Neurology, Behavioral Neurology Section, University of Colorado Alzheimer's & Cognition Center, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA.
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15
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Ecarnot F, Boccardi V, Calcagno A, Franceschi C, Fülop T, Itzhaki RF, Michel JP, Panza F, Rainero I, Solfrizzi V, Ticinesi A, Veronese N, Maggi S. Dementia, infections and vaccines: 30 years of controversy. Aging Clin Exp Res 2023; 35:1145-1160. [PMID: 37160649 PMCID: PMC10169152 DOI: 10.1007/s40520-023-02409-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 03/21/2023] [Indexed: 05/11/2023]
Abstract
This paper reports the proceedings of a virtual meeting convened by the European Interdisciplinary Council on Ageing (EICA), to discuss the involvement of infectious disorders in the pathogenesis of dementia and neurological disorders leading to dementia. We recap how our view of the infectious etiology of dementia has changed over the last 30 years in light of emerging evidence, and we present evidence in support of the implication of infection in dementia, notably Alzheimer's disease (AD). The bacteria and viruses thought to be responsible for neuroinflammation and neurological damage are reviewed. We then review the genetic basis for neuroinflammation and dementia, highlighting the genes that are currently the focus of investigation as potential targets for therapy. Next, we describe the antimicrobial hypothesis of dementia, notably the intriguing possibility that amyloid beta may itself possess antimicrobial properties. We further describe the clinical relevance of the gut-brain axis in dementia, the mechanisms by which infection can move from the intestine to the brain, and recent findings regarding dysbiosis patterns in patients with AD. We review the involvement of specific pathogens in neurological disorders, i.e. SARS-CoV-2, human immunodeficiency virus (HIV), herpes simplex virus type 1 (HSV1), and influenza. Finally, we look at the role of vaccination to prevent dementia. In conclusion, there is a large body of evidence supporting the involvement of various infectious pathogens in the pathogenesis of dementia, but large-scale studies with long-term follow-up are needed to elucidate the role that infection may play, especially before subclinical or clinical disease is present.
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Affiliation(s)
- Fiona Ecarnot
- EA3920, University of Franche-Comté, 25000, Besancon, France
- Department of Cardiology, University Hospital Besancon, 3-8 Boulevard Fleming, 25000, Besancon, France
| | - Virginia Boccardi
- Institute of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Santa Maria Della Misericordia Hospital, Piazzale Gambuli 1, 06132, Perugia, Italy
| | - Andrea Calcagno
- Unit of Infectious Diseases, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Claudio Franceschi
- Laboratory of Systems Medicine of Healthy Aging, Institute of Biology and Biomedicine and Institute of Information Technology, Mathematics and Mechanics, Department of Applied Mathematics, N. I. Lobachevsky State University, Nizhny Novgorod, Russia
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Tamas Fülop
- Department of Medicine, Geriatrics Division, Research Center on Aging, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, QC, J1H 5N4, Canada
| | - Ruth F Itzhaki
- Institute of Population Ageing, University of Oxford and Faculty of Life Sciences, University of Manchester, Manchester, UK
| | | | - Francesco Panza
- Unit of Research Methodology and Data Sciences for Population Health, National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte, Bari, Italy
- Dipartimento Interdisciplinare di Medicina, Clinica Medica e Geriatria "Cesare Frugoni", University of Bari Aldo Moro, Bari, Italy
| | - Innocenzo Rainero
- Dementia Center, Department of Neuroscience "Rita Levi Montalcini", University of Torino, Turin, Italy
| | - Vincenzo Solfrizzi
- Dipartimento Interdisciplinare di Medicina, Clinica Medica e Geriatria "Cesare Frugoni", University of Bari Aldo Moro, Bari, Italy
| | - Andrea Ticinesi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Nicola Veronese
- Geriatrics Section, Department of Internal Medicine, University of Palermo, Palermo, Italy.
| | - Stefania Maggi
- National Research Council, Neuroscience Institute, Aging Branch, Padua, Italy
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Luo L, Chen J, Wu Q, Yuan B, Hu C, Yang T, Wei H, Li T. Prenatally VPA exposure is likely to cause autistic-like behavior in the rats offspring via TREM2 down-regulation to affect the microglial activation and synapse alterations. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104090. [PMID: 36870407 DOI: 10.1016/j.etap.2023.104090] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/17/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Microglial dysfunction has been reported in the valproic acid (VPA)-induced autism spectrum disorder (ASD) rat models. However, how does prenatal VPA exposure affect microglia remains to be elucidated. The triggering receptor expressed on myeloid cells 2 (TREM2) is revealed to be implicated in a range of microglia functions. However, reports on the association between TREM2 and VPA-induced ASD rat models are scarce. Our results showed that prenatal VPA exposure induced autistic-like behaviors, downregulated the levels of TREM2, up-regulated microglial activation, dysregulated microglial polarization, and altered synapse in offspring. TREM2 overexpression partly ameliorated microglia dysfunction and autistic-like behaviors in prenatal VPA-exposed rats. Our findings demonstrated that prenatally VPA exposure is likely to cause autistic-like behavior in the rat offspring via TREM2 down-regulation to affect the microglial activation, microglial polarization and synaptic pruning of microglia for the first time.
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Affiliation(s)
- Lijuan Luo
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Jie Chen
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Qionghui Wu
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Binlin Yuan
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Chaoqun Hu
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Ting Yang
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Hua Wei
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China; Department of Child Health Care, Children's Hospital of Chongqing Medical University, Chongqing, China.
| | - Tingyu Li
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing Key Laboratory of Child Nutrition and Health, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China; Department of Child Health Care, Children's Hospital of Chongqing Medical University, Chongqing, China.
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17
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Biel D, Suárez‐Calvet M, Hager P, Rubinski A, Dewenter A, Steward A, Roemer S, Ewers M, Haass C, Brendel M, Franzmeier N. sTREM2 is associated with amyloid-related p-tau increases and glucose hypermetabolism in Alzheimer's disease. EMBO Mol Med 2023; 15:e16987. [PMID: 36620941 PMCID: PMC9906389 DOI: 10.15252/emmm.202216987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 01/10/2023] Open
Abstract
Microglial activation occurs early in Alzheimer's disease (AD) and previous studies reported both detrimental and protective effects of microglia on AD progression. Here, we used CSF sTREM2 to investigate disease stage-dependent drivers of microglial activation and to determine downstream consequences on AD progression. We included 402 patients with measures of earliest beta-amyloid (CSF Aβ1-42 ) and late-stage fibrillary Aβ pathology (amyloid-PET centiloid), as well as sTREM2, p-tau181 , and FDG-PET. To determine disease stage, we stratified participants into early Aβ-accumulators (Aβ CSF+/PET-; n = 70) or late Aβ-accumulators (Aβ CSF+/PET+; n = 201) plus 131 controls. In early Aβ-accumulators, higher centiloid was associated with cross-sectional/longitudinal sTREM2 and p-tau181 increases. Further, higher sTREM2 mediated the association between centiloid and cross-sectional/longitudinal p-tau181 increases and higher sTREM2 was associated with FDG-PET hypermetabolism. In late Aβ-accumulators, we found no association between centiloid and sTREM2 but a cross-sectional association between higher sTREM2, higher p-tau181 and glucose hypometabolism. Our findings suggest that a TREM2-related microglial response follows earliest Aβ fibrillization, manifests in inflammatory glucose hypermetabolism and may facilitate subsequent p-tau181 increases in earliest AD.
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Affiliation(s)
- Davina Biel
- Institute for Stroke and Dementia Research (ISD), University HospitalLMU MunichMunichGermany
| | - Marc Suárez‐Calvet
- Barcelonaβeta Brain Research Center (BBRC)Pasqual Maragall FoundationBarcelonaSpain,IMIM (Hospital del Mar Medical Research Institute)BarcelonaSpain,Servei de NeurologiaHospital del MarBarcelonaSpain,Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES)MadridSpain
| | - Paul Hager
- Institute of Radiology and Artificial Intelligence and Informatics in MedicineTU MunichMunichGermany
| | - Anna Rubinski
- Institute for Stroke and Dementia Research (ISD), University HospitalLMU MunichMunichGermany
| | - Anna Dewenter
- Institute for Stroke and Dementia Research (ISD), University HospitalLMU MunichMunichGermany
| | - Anna Steward
- Institute for Stroke and Dementia Research (ISD), University HospitalLMU MunichMunichGermany
| | - Sebastian Roemer
- Institute for Stroke and Dementia Research (ISD), University HospitalLMU MunichMunichGermany,Department of Neurology, University HospitalLMU MunichMunichGermany
| | - Michael Ewers
- Institute for Stroke and Dementia Research (ISD), University HospitalLMU MunichMunichGermany,German Center for Neurodegenerative Diseases (DZNE)MunichGermany
| | - Christian Haass
- German Center for Neurodegenerative Diseases (DZNE)MunichGermany,Munich Cluster for Systems Neurology (SyNergy)MunichGermany,Chair of Metabolic Biochemistry, Biomedical Center (BMC), Faculty of MedicineLMU MunichMunichGermany
| | - Matthias Brendel
- German Center for Neurodegenerative Diseases (DZNE)MunichGermany,Munich Cluster for Systems Neurology (SyNergy)MunichGermany,Department of Nuclear Medicine, University HospitalLMU MunichMunichGermany
| | - Nicolai Franzmeier
- Institute for Stroke and Dementia Research (ISD), University HospitalLMU MunichMunichGermany,Munich Cluster for Systems Neurology (SyNergy)MunichGermany,Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska AcademyUniversity of GothenburgGothenburgGermany
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18
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Strefeler A, Jan M, Quadroni M, Teav T, Rosenberg N, Chatton JY, Guex N, Gallart-Ayala H, Ivanisevic J. Molecular insights into sex-specific metabolic alterations in Alzheimer's mouse brain using multi-omics approach. Alzheimers Res Ther 2023; 15:8. [PMID: 36624525 PMCID: PMC9827669 DOI: 10.1186/s13195-023-01162-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/02/2023] [Indexed: 01/11/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) is a progressive neurodegenerative disorder that is characterized by altered cellular metabolism in the brain. Several of these alterations have been found to be exacerbated in females, known to be disproportionately affected by AD. We aimed to unravel metabolic alterations in AD at the metabolic pathway level and evaluate whether they are sex-specific through integrative metabolomic, lipidomic, and proteomic analysis of mouse brain tissue. METHODS We analyzed male and female triple-transgenic mouse whole brain tissue by untargeted mass spectrometry-based methods to obtain a molecular signature consisting of polar metabolite, complex lipid, and protein data. These data were analyzed using multi-omics factor analysis. Pathway-level alterations were identified through joint pathway enrichment analysis or by separately evaluating lipid ontology and known proteins related to lipid metabolism. RESULTS Our analysis revealed significant AD-associated and in part sex-specific alterations across the molecular signature. Sex-dependent alterations were identified in GABA synthesis, arginine biosynthesis, and in alanine, aspartate, and glutamate metabolism. AD-associated alterations involving lipids were also found in the fatty acid elongation pathway and lysophospholipid metabolism, with a significant sex-specific effect for the latter. CONCLUSIONS Through multi-omics analysis, we report AD-associated and sex-specific metabolic alterations in the AD brain involving lysophospholipid and amino acid metabolism. These findings contribute to the characterization of the AD phenotype at the molecular level while considering the effect of sex, an overlooked yet determinant metabolic variable.
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Affiliation(s)
- Abigail Strefeler
- grid.9851.50000 0001 2165 4204Metabolomics Unit, Faculty of Biology and Medicine, University de Lausanne, Lausanne, Switzerland
| | - Maxime Jan
- grid.9851.50000 0001 2165 4204Bioinformatics Competence Center, Faculty of Biology and Medicine, University de Lausanne, Lausanne, Switzerland
| | - Manfredo Quadroni
- grid.9851.50000 0001 2165 4204Protein Analysis Facility, Faculty of Biology and Medicine, University de Lausanne, Lausanne, Switzerland
| | - Tony Teav
- grid.9851.50000 0001 2165 4204Metabolomics Unit, Faculty of Biology and Medicine, University de Lausanne, Lausanne, Switzerland
| | - Nadia Rosenberg
- grid.9851.50000 0001 2165 4204Department of Fundamental Neurosciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Jean-Yves Chatton
- grid.9851.50000 0001 2165 4204Department of Fundamental Neurosciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Nicolas Guex
- grid.9851.50000 0001 2165 4204Bioinformatics Competence Center, Faculty of Biology and Medicine, University de Lausanne, Lausanne, Switzerland
| | - Hector Gallart-Ayala
- grid.9851.50000 0001 2165 4204Metabolomics Unit, Faculty of Biology and Medicine, University de Lausanne, Lausanne, Switzerland
| | - Julijana Ivanisevic
- grid.9851.50000 0001 2165 4204Metabolomics Unit, Faculty of Biology and Medicine, University de Lausanne, Lausanne, Switzerland
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