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Pandey JP, Baglio F, Mancuso R, Guerini FR, Cabinio M, Isernia S, Clerici M, Agostini S. Biomarkers of neural integrity and immunoglobulin genes influence neurodegeneration in Alzheimer's disease. J Neurol Sci 2024; 464:123167. [PMID: 39142084 PMCID: PMC11347077 DOI: 10.1016/j.jns.2024.123167] [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: 03/13/2024] [Revised: 06/26/2024] [Accepted: 08/04/2024] [Indexed: 08/16/2024]
Abstract
Compelling evidence has been presented in favor of herpes simplex virus type 1 (HSV1) being one of the causative agents of Alzheimer's disease (AD). The success of HSV1 as a pathogen relates to its sophisticated strategies to evade host immunosurveillance. One strategy involves encoding a decoy Fcγ receptor (FcγR) that thwarts the Fcγ-mediated effector functions, such as antibody-dependent cellular cytotoxicity (ADCC), a potent host immunosurveillance mechanism against virally infected cells. The decoy FcγR binds to antibodies of all IgG subclasses, except IgG3; therefore, IgG3 would be expected to play an important role in viral clearance by neutralization and ADCC, and thus contribute to protection from HSV1-spurred diseases. Previous studies have shown significant association between anti-HSV1 IgG3 antibodies and cortical thinning of the areas of the brain typically altered in AD and also targeted by HSV1. The aim of the present investigation was to determine whether GM (γ marker) 5 and GM 21 allotypes, hereditary allelic determinants expressed on IgG3, together with brain biomarkers of neural integrity, contributed to neurodegeneration-as measured by mini-mental state examination (MMSE) score-in patients with AD. Multiple regression analyses showed that the homozygous GM 5/5 genotype, preserved right hippocampus, and right insula thickness were associated with higher MMSE scores (p < 0.001), whereas the opposite pattern and GM 5/21 genotype were associated with worse clinical profiles. Influence of GM 5/21-expressing IgG3 antibodies on the ADCC of HSV1-infected neurons could, at least partially, explain these results.
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Affiliation(s)
- Janardan P Pandey
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, USA.
| | | | | | | | - Monia Cabinio
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Sara Isernia
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy; Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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2
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Feng B, Guo Y, Tang S, Zhang T, Gao Y, Ni X. Association of preoperative neutrophil-lymphocyte ratios with the emergence delirium in pediatric patients after tonsillectomy and adenoidectomy: an observational prospective study. J Anesth 2024; 38:206-214. [PMID: 38267728 DOI: 10.1007/s00540-023-03303-3] [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: 09/19/2023] [Accepted: 12/17/2023] [Indexed: 01/26/2024]
Abstract
PURPOSE The study aimed to investigate potential risk factors for emergence delirium (ED) in pediatric patients after tonsillectomy and adenoidectomy (T&A). METHODS This prospective, single-center observational study enrolled children aged 3-7 years who underwent T&A under general anesthesia. ED was assessed according to DSM-IV or V criteria. Receiver operating characteristic curve analysis was performed to evaluate the predicative and cut-off values of risk factors, including age, preoperative anxiety level, postoperative pain and neutrophil-lymphocyte ratio (NLR) for ED. Univariate and multivariate logistic regression analyses were performed to investigate risk factors for ED. RESULTS 94 pediatric patients who underwent T&A were enrolled and 19 developed ED (an incidence of 25.3%). Receiver operating characteristic analysis indicated that preoperative NLR was a significant predictor of ED with a cut-off value of 0.8719 and an area under the curve (AUC) of 0.671 (95% confidence interval (CI) 0.546-0.796, P = 0.022). Preoperative NLR (< 0.8719) and postoperative pain were independent risk factors associated with ED (odds ratio: 0.168, 95% CI 0.033-0.858, P = 0.032; odds ratio: 7.298, 95% CI 1.563-34.083, P = 0.011) according to multivariate logistic regression analysis. CONCLUSIONS Preoperative NLR level and postoperative pain were independent risk factors for ED in pediatric patients undergoing T&A.
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Affiliation(s)
- Bei Feng
- Department of Anesthesiology and Perioperative Medicine, General Hospital of Ningxia Medical University, 804, Shengli South Street, Xingqing District, Yinchuan, 750004, China
| | - Yuhao Guo
- Department of Anesthesiology and Perioperative Medicine, General Hospital of Ningxia Medical University, 804, Shengli South Street, Xingqing District, Yinchuan, 750004, China
| | - Shaling Tang
- Department of Anesthesiology and Perioperative Medicine, General Hospital of Ningxia Medical University, 804, Shengli South Street, Xingqing District, Yinchuan, 750004, China
| | - Tie Zhang
- Department of Anesthesiology and Perioperative Medicine, General Hospital of Ningxia Medical University, 804, Shengli South Street, Xingqing District, Yinchuan, 750004, China
| | - Yubo Gao
- Department of Anesthesiology and Perioperative Medicine, General Hospital of Ningxia Medical University, 804, Shengli South Street, Xingqing District, Yinchuan, 750004, China.
| | - Xinli Ni
- Department of Anesthesiology and Perioperative Medicine, General Hospital of Ningxia Medical University, 804, Shengli South Street, Xingqing District, Yinchuan, 750004, China.
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3
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Munafò A, Cantone AF, Di Benedetto G, Torrisi SA, Burgaletto C, Bellanca CM, Gaudio G, Broggi G, Caltabiano R, Leggio GM, Bernardini R, Cantarella G. Pharmacological enhancement of cholinergic neurotransmission alleviates neuroinflammation and improves functional outcomes in a triple transgenic mouse model of Alzheimer's disease. Front Pharmacol 2024; 15:1386224. [PMID: 38595916 PMCID: PMC11002120 DOI: 10.3389/fphar.2024.1386224] [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: 02/14/2024] [Accepted: 03/15/2024] [Indexed: 04/11/2024] Open
Abstract
Introduction: Alzheimer's disease (AD) is the most common neurodegenerative disorder affecting the elderly population worldwide. Due to the multifactorial nature of the disease, involving impairment of cholinergic neurotransmission and immune system, previous attempts to find effective treatments have faced challenges. Methods: In such scenario, we attempted to investigate the effects of alpha-glyceryl-phosphoryl-choline (α-GPC), a cholinomimetic molecule, on neuroinflammation and memory outcome in the triple transgenic mouse model of AD (3xTg-AD). Mice were enrolled at 4 months of age, treated orally with α-GPC dissolved in drinking water at a concentration resulting in an average daily dose of 100 mg/kg for 8 months and sacrificed at 12 months of age. Thereafter, inflammatory markers, as well as cognitive parameters, were measured. Results: Chronic α-GPC treatment reduced accumulation of amyloid deposits and led to a substantial re-balance of the inflammatory response of resident innate immune cells, astrocytes and microglia. Specifically, fluorescent immunohistochemistry and Western blot analysis showed that α-GPC contributed to reduction of cortical and hippocampal reactive astrocytes and pro-inflammatory microglia, concurrently increasing the expression of anti-inflammatory molecules. Whereas α-GPC beneficially affect the synaptic marker synaptophysin in the hippocampus. Furthermore, we observed that α-GPC was effective in restoring cognitive dysfunction, as measured by the Novel Object Recognition test, wherein 3xTg-AD mice treated with α-GPC significantly spent more time exploring the novel object compared to 3xTg-AD untreated mice. Discussion: In conclusion, chronic treatment with α-GPC exhibited a significant anti-inflammatory activity and sustained the key function of hippocampal synapses, crucial for the maintenance of a regular cognitive status. In light of our results, we suggest that α-GPC could be exploited as a promising therapeutic approach in early phases of AD.
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Affiliation(s)
- Antonio Munafò
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
| | - Anna Flavia Cantone
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
| | - Giulia Di Benedetto
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
- Clinical Toxicology Unit, University Hospital of Catania, Catania, Italy
| | - Sebastiano Alfio Torrisi
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
| | - Chiara Burgaletto
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
| | - Carlo Maria Bellanca
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
- Clinical Toxicology Unit, University Hospital of Catania, Catania, Italy
| | - Gabriella Gaudio
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
| | - Giuseppe Broggi
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Anatomic Pathology, University of Catania, Catania, Italy
| | - Rosario Caltabiano
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Anatomic Pathology, University of Catania, Catania, Italy
| | - Gian Marco Leggio
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
| | - Renato Bernardini
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
- Clinical Toxicology Unit, University Hospital of Catania, Catania, Italy
| | - Giuseppina Cantarella
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Catania, Italy
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4
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Isernia S, Blasi V, Baglio G, Cabinio M, Cecconi P, Rossetto F, Cazzoli M, Blasi F, Bruckmann C, Giunco F, Sorbi S, Clerici M, Baglio F. The key role of depression and supramarginal gyrus in frailty: a cross-sectional study. Front Aging Neurosci 2023; 15:1292417. [PMID: 38020757 PMCID: PMC10665836 DOI: 10.3389/fnagi.2023.1292417] [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: 09/15/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Background The age-related decrease in reserve and resistance to stressors is recognized as frailty, one of the most significant challenges identified in recent years. Despite a well-acknowledged association of frailty with cognitive impairment, depression, and gray matter morphology, no clear data are available regarding the nature of this relationship. This cross-sectional study aims to disentangle the role of the behavioral, neuropsychological, and neural components as predictors or moderators of frailty. Methods Ninety-six older adults (mean age = 75.49 ± 6.62) were consecutively enrolled and underwent a clinical and MRI (3 T) evaluation to assess frailty, physical activity, global cognitive level, depression, wellbeing, autonomy in daily living, cortical thickness, and subcortical volumes. Results Results showed a full mediation of depression on the link between cortical thickness and frailty, while the cognitive level showed no significant mediating role. In particular, left supramarginal thickness had a predicting role on depression, that in turn impacted frailty occurrence. Finally, handgrip weakness was an early key indicator of frailty in this study's cohort. Conclusion These data substantiate the role of depression in mediating the link between neural integrity of the supramarginal gyrus and frailty. In the complexity of frailty, handgrip weakness seems to be an early key indicator. These results are relevant for the design of rehabilitation interventions aimed at reversing the frail condition.
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Affiliation(s)
- Sara Isernia
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Valeria Blasi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | | | - Monia Cabinio
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | | | | | - Marta Cazzoli
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Francesco Blasi
- Fondazione Istituto FIRC di Oncologia Molecolare, Milan, Italy
| | | | | | - Sandro Sorbi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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Zhang X, Subbanna S, Williams CRO, Canals-Baker S, Smiley JF, Wilson DA, Das BC, Saito M. Anti-inflammatory Action of BT75, a Novel RARα Agonist, in Cultured Microglia and in an Experimental Mouse Model of Alzheimer's Disease. Neurochem Res 2023; 48:1958-1970. [PMID: 36781685 PMCID: PMC10355192 DOI: 10.1007/s11064-023-03888-x] [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: 11/28/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/15/2023]
Abstract
BT75, a boron-containing retinoid, is a novel retinoic acid receptor (RAR)α agonist synthesized by our group. Previous studies indicated that activation of retinoic acid (RA) signaling may attenuate progression of Alzheimer's disease (AD). Presently, we aimed to examine the anti-inflammatory effect of BT75 and explore the possible mechanism using cultured cells and an AD mouse model. Pretreatment with BT75 (1-25 µM) suppressed the release of nitric oxide (NO) and IL-1β in the culture medium of mouse microglial SIM-A9 cells activated by LPS. BMS195614, an RARα antagonist, partially blocked the inhibition of NO production by BT75. Moreover, BT75 attenuated phospho-Akt and phospho-NF-κB p65 expression augmented by LPS. In addition, BT75 elevated arginase 1, IL-10, and CD206, and inhibited inducible nitric oxide synthase (iNOS) and IL-6 formation in LPS-treated SIM-A9 cells, suggesting the promotion of M1-M2 microglial phenotypic polarization. C57BL/6 mice were injected intracerebroventricularly (icv) with streptozotocin (STZ) (3 mg/kg) to provide an AD-like mouse model. BT75 (5 mg/kg) or the vehicle was intraperitoneally (ip) injected to icv-STZ mice once a day for 3 weeks. Immunohistochemical analyses indicated that GFAP-positive cells and rod or amoeboid-like Iba1-positive cells, which increased in the hippocampal fimbria of icv-STZ mice, were reduced by BT75 treatment. Western blot results showed that BT75 decreased levels of neuronal nitric oxide synthase (nNOS), GFAP, and phosphorylated Tau, and increased levels of synaptophysin in the hippocampus of icv-STZ mice. BT75 may attenuate neuroinflammation by affecting the Akt/NF-κB pathway and microglial M1-M2 polarization in LPS-stimulated SIM-A9 cells. BT75 also reduced AD-like pathology including glial activation in the icv-STZ mice. Thus, BT75 may be a promising anti-inflammatory and neuroprotective agent worthy of further AD studies.
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Affiliation(s)
- Xiuli Zhang
- Division of Neurochemistry, Nathan Kline Institute for Psychiatric Research, 140 Old Orangeburg Rd, Orangeburg, NY, 10962, USA
| | - Shivakumar Subbanna
- Division of Neurochemistry, Nathan Kline Institute for Psychiatric Research, 140 Old Orangeburg Rd, Orangeburg, NY, 10962, USA
| | - Colin R O Williams
- Emotional Brain Institute, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA
| | - Stefanie Canals-Baker
- Division of Neurochemistry, Nathan Kline Institute for Psychiatric Research, 140 Old Orangeburg Rd, Orangeburg, NY, 10962, USA
| | - John F Smiley
- Division of Neurochemistry, Nathan Kline Institute for Psychiatric Research, 140 Old Orangeburg Rd, Orangeburg, NY, 10962, USA
- Department of Psychiatry, New York University School of Medicine, New York, NY, USA
| | - Donald A Wilson
- Emotional Brain Institute, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA
- Department of Child and Adolescent Psychiatry, New York University Medical Center, New York, NY, USA
| | - Bhaskar C Das
- Arnold and Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, 75 DeKalb Ave., Brooklyn, NY, 11201, USA.
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Mariko Saito
- Division of Neurochemistry, Nathan Kline Institute for Psychiatric Research, 140 Old Orangeburg Rd, Orangeburg, NY, 10962, USA.
- Department of Psychiatry, New York University School of Medicine, New York, NY, USA.
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St-Pierre MK, Carrier M, González Ibáñez F, Khakpour M, Wallman MJ, Parent M, Tremblay MÈ. Astrocytes display ultrastructural alterations and heterogeneity in the hippocampus of aged APP-PS1 mice and human post-mortem brain samples. J Neuroinflammation 2023; 20:73. [PMID: 36918925 PMCID: PMC10015698 DOI: 10.1186/s12974-023-02752-7] [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: 12/15/2022] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
The past decade has witnessed increasing evidence for a crucial role played by glial cells, notably astrocytes, in Alzheimer's disease (AD). To provide novel insights into the roles of astrocytes in the pathophysiology of AD, we performed a quantitative ultrastructural characterization of their intracellular contents and parenchymal interactions in an aged mouse model of AD pathology, as aging is considered the main risk factor for developing AD. We compared 20-month-old APP-PS1 and age-matched C57BL/6J male mice, among the ventral hippocampus CA1 strata lacunosum-moleculare and radiatum, two hippocampal layers severely affected by AD pathology. Astrocytes in both layers interacted more with synaptic elements and displayed more ultrastructural markers of increased phagolysosomal activity in APP-PS1 versus C57BL6/J mice. In addition, we investigated the ultrastructural heterogeneity of astrocytes, describing in the two examined layers a dark astrocytic state that we characterized in terms of distribution, interactions with AD hallmarks, and intracellular contents. This electron-dense astrocytic state, termed dark astrocytes, was observed throughout the hippocampal parenchyma, closely associated with the vasculature, and possessed several ultrastructural markers of cellular stress. A case study exploring the hippocampal head of an aged human post-mortem brain sample also revealed the presence of a similar electron-dense, dark astrocytic state. Overall, our study provides the first ultrastructural quantitative analysis of astrocytes among the hippocampus in aged AD pathology, as well as a thorough characterization of a dark astrocytic state conserved from mouse to human.
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Affiliation(s)
- Marie-Kim St-Pierre
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Départment de Médecine Moléculaire, Faculté de Médecine, Université Laval, Québec, QC, Canada.,Division of Medical Sciences, Medical Sciences Building, University of Victoria, Victoria, BC, Canada
| | - Micaël Carrier
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Division of Medical Sciences, Medical Sciences Building, University of Victoria, Victoria, BC, Canada
| | - Fernando González Ibáñez
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Départment de Médecine Moléculaire, Faculté de Médecine, Université Laval, Québec, QC, Canada.,Division of Medical Sciences, Medical Sciences Building, University of Victoria, Victoria, BC, Canada
| | - Mohammadparsa Khakpour
- Division of Medical Sciences, Medical Sciences Building, University of Victoria, Victoria, BC, Canada
| | - Marie-Josée Wallman
- Département de Psychiatrie et de Neurosciences, Faculté de Médecine, Université Laval, Québec, QC, Canada.,CERVO Brain Research Center, Quebec City, QC, Canada
| | - Martin Parent
- Département de Psychiatrie et de Neurosciences, Faculté de Médecine, Université Laval, Québec, QC, Canada.,CERVO Brain Research Center, Quebec City, QC, Canada
| | - Marie-Ève Tremblay
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada. .,Départment de Médecine Moléculaire, Faculté de Médecine, Université Laval, Québec, QC, Canada. .,Division of Medical Sciences, Medical Sciences Building, University of Victoria, Victoria, BC, Canada. .,Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada. .,Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada. .,Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, BC, Canada. .,Institute on Aging and Lifelong Health, University of Victoria, Victoria, BC, Canada.
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7
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Sanchez-Sanchez JL, Giudici KV, Guyonnet S, Delrieu J, Li Y, Bateman RJ, Parini A, Vellas B, de Souto Barreto P, Vellas B, Guyonnet S, Carrié I, Brigitte L, Faisant C, Lala F, Delrieu J, Villars H, Combrouze E, Badufle C, Zueras A, Andrieu S, Cantet C, Morin C, Van Kan GA, Dupuy C, Rolland Y, Caillaud C, Ousset PJ, Lala F, Willis S, Belleville S, Gilbert B, Fontaine F, Dartigues JF, Marcet I, Delva F, Foubert A, Cerda S, Marie-Noëlle-Cuffi, Costes C, Rouaud O, Manckoundia P, Quipourt V, Marilier S, Franon E, Bories L, Pader ML, Basset MF, Lapoujade B, Faure V, Tong MLY, Malick-Loiseau C, Cazaban-Campistron E, Desclaux F, Blatge C, Dantoine T, Laubarie-Mouret C, Saulnier I, Clément JP, Picat MA, Bernard-Bourzeix L, Willebois S, Désormais I, Cardinaud N, Bonnefoy M, Livet P, Rebaudet P, Gédéon C, Burdet C, Terracol F, Pesce A, Roth S, Chaillou S, Louchart S, Sudres K, Lebrun N, Barro-Belaygues N, Touchon J, Bennys K, Gabelle A, Romano A, Touati L, Marelli C, Pays C, Robert P, Le Duff F, Gervais C, Gonfrier S, Gasnier Y, Bordes S, Begorre D, Carpuat C, Khales K, Lefebvre JF, El Idrissi SM, Skolil P, Salles JP, Dufouil C, Lehéricy S, Chupin M, Mangin JF, Bouhayia A, Allard M, Ricolfi F, Dubois D, Martel MPB, Cotton F, Bonafé A, Chanalet S, Hugon F, Bonneville F, Cognard C, Chollet F, Payoux P, Voisin T, Peiffer S, Hitzel A, Zanca M, Monteil J, Darcourt J, Molinier L, Derumeaux H, Costa N, Perret B, Vinel C, Caspar-Bauguil S, Olivier-Abbal P, Coley N. Plasma MCP-1 and changes on cognitive function in community-dwelling older adults. Alzheimers Res Ther 2022; 14:5. [PMID: 34996522 PMCID: PMC8742409 DOI: 10.1186/s13195-021-00940-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/16/2021] [Indexed: 12/24/2022]
Abstract
Background Monocyte Chemoattractant Protein-1 (MCP-1), a glial-derived chemokine, mediates neuroinflammation and may regulate memory outcomes among older adults. We aimed to explore the associations of plasma MCP-1 levels (alone and in combination with β-amyloid deposition—Aβ42/40) with overall and domain-specific cognitive evolution among older adults. Methods Secondary analyses including 1097 subjects (mean age = 75.3 years ± 4.4; 63.8% women) from the Multidomain Alzheimer Preventive Trial (MAPT). MCP-1 (higher is worse) and Aβ42/40 (lower is worse) were measured in plasma collected at year 1. MCP-1 in continuous and as a dichotomy (values in the highest quartile (MCP-1+)) were used, as well as a dichotomy of Aβ42/40. Outcomes were measured annually over 4 years and included the following: cognitive composite z-score (CCS), the Mini-Mental State Examination (MMSE), and Clinical Dementia Rating (CDR) sum of boxes (overall cognitive function); composite executive function z-score, composite attention z-score, Free and Cued Selective Reminding Test (FCSRT - memory). Results Plasma MCP-1 as a continuous variable was associated with the worsening of episodic memory over 4 years of follow-up, specifically in measures of free and cued delayed recall. MCP-1+ was associated with worse evolution in the CCS (4-year between-group difference: β = −0.14, 95%CI = −0.26, −0.02) and the CDR sum of boxes (2-year: β = 0.19, 95%CI = 0.06, 0.32). In domain-specific analyses, MCP-1+ was associated with declines in the FCSRT delayed recall sub-domains. In the presence of low Aβ42/40, MCP-1+ was not associated with greater declines in cognitive functions. The interaction with continuous biomarker values Aβ42/40× MCP-1 × time was significant in models with CDR sum of boxes and FCSRT DTR as dependent variables. Conclusions Baseline plasma MCP-1 levels were associated with longitudinal declines in overall cognitive and episodic memory performance in older adults over a 4-year follow-up. How plasma MCP-1 interacts with Aβ42/40 to determine cognitive decline at different stages of cognitive decline/dementia should be clarified by further research. The MCP-1 association on cognitive decline was strongest in those with amyloid plaques, as measured by blood plasma Aβ42/40. Supplementary Information The online version contains supplementary material available at 10.1186/s13195-021-00940-2.
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8
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St-Pierre MK, Carrier M, González Ibáñez F, Šimončičová E, Wallman MJ, Vallières L, Parent M, Tremblay MÈ. Ultrastructural characterization of dark microglia during aging in a mouse model of Alzheimer's disease pathology and in human post-mortem brain samples. J Neuroinflammation 2022; 19:235. [PMID: 36167544 PMCID: PMC9513936 DOI: 10.1186/s12974-022-02595-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 09/12/2022] [Indexed: 11/10/2022] Open
Abstract
A diverse heterogeneity of microglial cells was previously described in Alzheimer's disease (AD) pathology, including dark microglia, a state characterized by ultrastructural markers of cellular stress. To provide novel insights into the roles of dark microglia during aging in the context of AD pathology, we performed a quantitative density and ultrastructural analysis of these cells using high-throughput scanning electron microscopy in the ventral hippocampus CA1 stratum lacunosum-moleculare of 20-month-old APP-PS1 vs C57BL/6J male mice. The density of dark microglia was significantly higher in APP-PS1 vs C57BL/6J mice, with these cells accounting for nearly half of all microglia observed near amyloid-beta (Aβ) plaques. This dark microglial state interacted more with dystrophic neurites compared to other APP-PS1 microglia and possessed glycogen granules, associated with a metabolic shift toward glycolysis, which provides the first ultrastructural evidence of their presence in microglia. Dark microglia were further observed in aging human post-mortem brain samples showing similar ultrastructural features as in mouse. Overall, our results provide a quantitative ultrastructural characterization of a microglial state associated with cellular stress (i.e., dark microglia) that is primarily restricted near Aβ plaques and dystrophic neurites. The presence of this microglial state in the aging human post-mortem brain is further revealed.
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Affiliation(s)
- Marie-Kim St-Pierre
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Department of Molecular Medicine, Université Laval, Québec City, QC, Canada.,Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Micaël Carrier
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Fernando González Ibáñez
- Department of Molecular Medicine, Université Laval, Québec City, QC, Canada.,Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Eva Šimončičová
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada.,Neuroscience Graduate Program, University of Victoria, Victoria, BC, Canada
| | - Marie-Josée Wallman
- Département de Psychiatrie et de Neurosciences, Faculté de Médecine, Université Laval, Quebec, QC, Canada.,CERVO Brain Research Center, Quebec, QC, Canada
| | - Luc Vallières
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Department of Molecular Medicine, Université Laval, Québec City, QC, Canada
| | - Martin Parent
- Département de Psychiatrie et de Neurosciences, Faculté de Médecine, Université Laval, Quebec, QC, Canada.,CERVO Brain Research Center, Quebec, QC, Canada
| | - Marie-Ève Tremblay
- Axe Neurosciences, Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada. .,Department of Molecular Medicine, Université Laval, Québec City, QC, Canada. .,Division of Medical Sciences, University of Victoria, Victoria, BC, Canada. .,Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, BC, Canada. .,Department of Neurology and Neurosurgery, McGill University, Montréal, QC, Canada. .,Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, BC, Canada.
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9
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Heywood A, Stocks J, Schneider JA, Arfanakis K, Bennett DA, Beg MF, Wang L. The unique effect of TDP-43 on hippocampal subfield morphometry and cognition. Neuroimage Clin 2022; 35:103125. [PMID: 36002965 PMCID: PMC9421500 DOI: 10.1016/j.nicl.2022.103125] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/20/2022] [Accepted: 07/22/2022] [Indexed: 01/18/2023]
Abstract
•We explored postmortem TDP-43 burden and antemortem hippocampal surface deformation. •TDP-43 was uniquely associated with inward deformation in the hippocampus. •Deformation patterns account for co-existing disease showing TDP-43′s unique effect. •Deformation was significantly correlated with cognition scores.
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Affiliation(s)
- Ashley Heywood
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Jane Stocks
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Julie A Schneider
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Konstantinos Arfanakis
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA; Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | | | - Lei Wang
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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10
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Chen S, Fan F, Xuan FL, Yan L, Xiu M, Fan H, Cui Y, Zhang P, Yu T, Yang F, Tian B, Hong LE, Tan Y, Tian L. Monocytic Subsets Impact Cerebral Cortex and Cognition: Differences Between Healthy Subjects and Patients With First-Episode Schizophrenia. Front Immunol 2022; 13:900284. [PMID: 35898501 PMCID: PMC9309358 DOI: 10.3389/fimmu.2022.900284] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 06/20/2022] [Indexed: 12/11/2022] Open
Abstract
Monocytes are a highly heterogeneous population subcategorized into classical, intermediate and nonclassical subsets. How monocytes and their subsets may shape brain structures and functions in schizophrenia remains unclear. The primary goal of this cross-sectional study was to investigate monocytic subsets and their specific signature genes in regulation of cerebral cortical thickness and cognitive functions in first-episode schizophrenia (FES) patients. Whole-blood RNA sequencing of 128 FES patients and 111 healthy controls (HCs) were conducted and monocyte-specific differentially expressed genes were further analyzed. The MATRICS Consensus Cognitive Battery (MCCB) test, cortical neuroimaging and flow cytometric staining of peripheral blood monocytic subsets were performed among the participants. Significant changes in expressions of 54 monocytic signature genes were found in patients, especially for intermediate and nonclassical monocytic subsets with the most outstanding alterations being downregulated S100 Calcium Binding Protein A (S100A) and upregulated Interferon Induced Transmembrane Protein (IFITM) family members, respectively. Meanwhile, percentage of blood nonclassical monocytes was decreased in patients. Cortical thicknesses and MCCB performance were expectantly reduced and weaker intra-relationships among monocytic signature genes and cortices, respectively, were noted in patients compared to HCs. Monocytic genes were negatively associated with both cortical thicknesses and cognition in HCs, which was interestingly weakened or even reversed in patients, with nonclassical monocytic genes showing the greatest statistical significance. This study reveals that while monocytes may have negative effects on brain structure and cognition, the ameliorated phenomenon observed in schizophrenia may reflect an (mal)adaptive change of monocytes at early stage of the disorder.
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Affiliation(s)
- Song Chen
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Fengmei Fan
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Fang-Ling Xuan
- Institute of Biomedicine and Translational Medicine, Department of Physiology, Faculty of Medicine, University of Tartu, Tartu, Estonia
| | - Ling Yan
- Institute of Biomedicine and Translational Medicine, Department of Physiology, Faculty of Medicine, University of Tartu, Tartu, Estonia
| | - Meihong Xiu
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Hongzhen Fan
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Yimin Cui
- Department of Pharmacy, Peking University First Hospital, Beijing, China
| | - Ping Zhang
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Ting Yu
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Fude Yang
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Baopeng Tian
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - L. Elliot Hong
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Yunlong Tan
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
- *Correspondence: Li Tian, ; Yunlong Tan,
| | - Li Tian
- Institute of Biomedicine and Translational Medicine, Department of Physiology, Faculty of Medicine, University of Tartu, Tartu, Estonia
- *Correspondence: Li Tian, ; Yunlong Tan,
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11
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Starovoytova IA, Dominova IN. An in vitro Study of the Effect of Bacterial Lipopolysaccharide on Transcription Levels of SLC Family Transporter Genes in Microglia. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022020193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Al-Onaizi MA, Thériault P, Lecordier S, Prefontaine P, Rivest S, ElAli A. Early monocyte modulation by the non-erythropoietic peptide ARA 290 decelerates AD-like pathology progression. Brain Behav Immun 2022; 99:363-382. [PMID: 34343617 DOI: 10.1016/j.bbi.2021.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/06/2021] [Accepted: 07/24/2021] [Indexed: 12/12/2022] Open
Abstract
Alzheimer's disease (AD) pathology is characterized by amyloid-β (Aβ) deposition and tau hyper-phosphorylation, accompanied by a progressive cognitive decline. Monocytes have been recently shown to play a major role in modulating Aβ pathology, and thereby have been pointed as potential therapeutic targets. However, the main challenge remains in identifying clinically relevant interventions that could modulate monocyte immune functions in absence of undesired off-target effects. Erythropoietin (EPO), a key regulator of erythrocyte production, has been shown to possess immunomodulatory potential and to provide beneficial effects in preclinical models of AD. However, the transition to use recombinant human EPO in clinical trials was hindered by unwanted erythropoietic effects that could lead to thrombosis. Here, we used a recently identified non-erythropoietic analogue of EPO, ARA 290, to evaluate its therapeutic potential in AD therapy. We first evaluated the effects of early systemic ARA 290 administration on AD-like pathology in an early-onset model, represented by young APP/PS1 mice. Our findings indicate that ARA 290 early treatment decelerated Aβ pathology progression in APP/PS1 mice while improving cognitive functions. ARA 290 potently increased the levels of total monocytes by specifically stimulating the generation of Ly6CLow patrolling subset, which are implicated in clearing Aβ from the cerebral vasculature, and subsequently reducing overall Aβ burden in the brain. Moreover, ARA 290 increased the levels of monocyte progenitors in the bone marrow. Using chimeric APP/PS1 mice in which Ly6CLow patrolling subset are selectively depleted, ARA 290 was inefficient in attenuating Aβ pathology and ameliorating cognitive functions in young animals. Interestingly, ARA 290 effects were compromised when delivered in a late-onset model, represented by aged APP1/PS1. In aged APP/PS1 mice in which AD-like pathology is at advanced stages, ARA 290 failed to reverse Aβ pathology and to increase the levels of circulating monocytes. Our study suggests that ARA 290 early systemic treatment could prevent AD-like progression via modulation of monocyte functions by specifically increasing the ratio of patrolling monocytes.
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Affiliation(s)
- Mohammed A Al-Onaizi
- Department of Anatomy, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait; Department of Molecular Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Peter Thériault
- Neuroscience Axis, Research Center of CHU de Québec - Université Laval, Quebec City, QC, Canada; Department of Molecular Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Sarah Lecordier
- Neuroscience Axis, Research Center of CHU de Québec - Université Laval, Quebec City, QC, Canada; Department of Psychiatry and Neuroscience, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Paul Prefontaine
- Neuroscience Axis, Research Center of CHU de Québec - Université Laval, Quebec City, QC, Canada; Department of Molecular Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Serge Rivest
- Neuroscience Axis, Research Center of CHU de Québec - Université Laval, Quebec City, QC, Canada; Department of Molecular Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Ayman ElAli
- Neuroscience Axis, Research Center of CHU de Québec - Université Laval, Quebec City, QC, Canada; Department of Psychiatry and Neuroscience, Faculty of Medicine, Université Laval, Quebec City, QC, Canada.
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13
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Di Tella S, Cabinio M, Isernia S, Blasi V, Rossetto F, Saibene FL, Alberoni M, Silveri MC, Sorbi S, Clerici M, Baglio F. Neuroimaging Biomarkers Predicting the Efficacy of Multimodal Rehabilitative Intervention in the Alzheimer's Dementia Continuum Pathology. Front Aging Neurosci 2021; 13:735508. [PMID: 34880742 PMCID: PMC8645692 DOI: 10.3389/fnagi.2021.735508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/30/2021] [Indexed: 12/19/2022] Open
Abstract
In this work we aimed to identify neural predictors of the efficacy of multimodal rehabilitative interventions in AD-continuum patients in the attempt to identify ideal candidates to improve the treatment outcome. Subjects in the AD continuum who participated in a multimodal rehabilitative treatment were included in the analysis [n = 82, 38 Males, mean age = 76 ± 5.30, mean education years = 9.09 ± 3.81, Mini Mental State Examination (MMSE) mean score = 23.31 ± 3.81]. All subjects underwent an MRI acquisition (1.5T) at baseline (T0) and a neuropsychological evaluation before (T0) and after intervention (T1). All subjects underwent an intensive multimodal cognitive rehabilitation (8–10 weeks). The MMSE and Neuropsychiatric Inventory (NPI) scores were considered as the main cognitive and behavioral outcome measures, and Delta change scores (T1–T0) were categorized in Improved (ΔMMSE > 0; ΔNPI < 0) and Not Improved (ΔMMSE ≤ 0; ΔNPI ≥ 0). Logistic Regression (LR) and Random Forest classification models were performed including neural markers (Medial Temporal Brain; Posterior Brain (PB); Frontal Brain (FB), Subcortical Brain indexes), neuropsychological (MMSE, NPI, verbal fluencies), and demographical variables (sex, age, education) at baseline. More than 50% of patients showed a positive effect of the treatment (ΔMMSE > 0: 51%, ΔNPI < 0: 52%). LR model on ΔMMSE (Improved vs. Not Improved) indicate a predictive role for MMSE score (p = 0.003) and PB index (p = 0.005), especially the right PB (p = 0.002) at baseline. The Random Forest analysis correctly classified 77% of cognitively improved and not improved AD patients. Concerning the NPI, LR model on ΔNPI (Improved vs. Not Improved) showed a predictive role of sex (p = 0.002), NPI (p = 0.005), PB index (p = 0.006), and FB index (p = 0.039) at baseline. The Random Forest reported a classification accuracy of 86%. Our data indicate that cognitive and behavioral status alone are not sufficient to identify best responders to a multidomain rehabilitation treatment. Increased neural reserve, especially in the parietal areas, is also relevant for the compensatory mechanisms activated by rehabilitative treatment. These data are relevant to support clinical decision by identifying target patients with high probability of success after rehabilitative programs on cognitive and behavioral functioning.
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Affiliation(s)
- Sonia Di Tella
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy.,Department of Psychology, Università Cattolica del Sacro Cuore, Milan, Italy
| | - Monia Cabinio
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Sara Isernia
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Valeria Blasi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | | | | | | | - Maria Caterina Silveri
- Department of Psychology, Università Cattolica del Sacro Cuore, Milan, Italy.,Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, Rome, Italy
| | - Sandro Sorbi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy.,Università degli Studi di Firenze, NEUROFARBA, Firenze, Italy
| | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy.,Department of Physiopathology and Transplants, Università degli Studi di Milano, Milan, Italy
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14
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Warren A. Preserved Consciousness in Alzheimer's Disease and Other Dementias: Caregiver Awareness and Communication Strategies. Front Psychol 2021; 12:790025. [PMID: 34950092 PMCID: PMC8688803 DOI: 10.3389/fpsyg.2021.790025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022] Open
Abstract
Alzheimer's disease is an insidious onset neurodegenerative syndrome without effective treatment or cure. It is rapidly becoming a global health crisis that is overwhelming healthcare, society, and individuals. The clinical nature of neurocognitive decline creates significant challenges in bidirectional communication between caregivers and persons with Alzheimer's disease (AD) that can negatively impact quality-of-life. This paper sought to understand how and to what extent would awareness training about the levels of consciousness in AD influence the quality-of-life interactions in the caregiver-patient dyad. A literature review of multiple databases was conducted utilizing a transdisciplinary approach. The sum of findings indicates a positive relationship between enhanced caregiver awareness and training, positive interactions, and improved QOL measures among patients and caregivers. A multidirectional relationship was found among healthcare policies, training and education resources, caregivers, and persons with AD. Specifically, the current lack of policy and inadequate training and educational resources has various detrimental effects on patients and caregivers, while improvements in training and education of caregivers yields positive outcomes in communication and QOL. Furthermore, evidence of preserved consciousness in persons with AD was demonstrated from multiple disciplines, including neurobiological, psychological, and biopsychosocial models. The literature further revealed several methods to access the preserved consciousness in persons with AD and related dementias, including sensory, emotional, and cognitive stimulations. The evidence from the literature suggests a reframed approach to our understanding and treatment of persons with AD is not only warranted, but crucial to address the needs of those affected by AD.
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Affiliation(s)
- Alison Warren
- The Department of Clinical Research and Leadership, The George Washington University, Washington, DC, United States
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15
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Isernia S, Cabinio M, Di Tella S, Pazzi S, Vannetti F, Gerli F, Mosca IE, Lombardi G, Macchi C, Sorbi S, Baglio F. Diagnostic Validity of the Smart Aging Serious Game: An Innovative Tool for Digital Phenotyping of Mild Neurocognitive Disorder. J Alzheimers Dis 2021; 83:1789-1801. [PMID: 34459394 DOI: 10.3233/jad-210347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The Smart Aging Serious Game (SASG) is an ecologically-based digital platform used in mild neurocognitive disorders. Considering the higher risk of developing dementia for mild cognitive impairment (MCI) and vascular cognitive impairment (VCI), their digital phenotyping is crucial. A new understanding of MCI and VCI aided by digital phenotyping with SASG will challenge current differential diagnosis and open the perspective of tailoring more personalized interventions. OBJECTIVE To confirm the validity of SASG in detecting MCI from healthy controls (HC) and to evaluate its diagnostic validity in differentiating between VCI and HC. METHODS 161 subjects (74 HC: 37 males, 75.47±2.66 mean age; 60 MCI: 26 males, 74.20±5.02; 27 VCI: 13 males, 74.22±3.43) underwent a SASG session and a neuropsychological assessment (Montreal Cognitive Assessment (MoCA), Free and Cued Selective Reminding Test, Trail Making Test). A multi-modal statistical approach was used: receiver operating characteristic (ROC) curves comparison, random forest (RF), and logistic regression (LR) analysis. RESULTS SASG well captured the specific cognitive profiles of MCI and VCI, in line with the standard neuropsychological measures. ROC analyses revealed high diagnostic sensitivity and specificity of SASG and MoCA (AUCs > 0.800) in detecting VCI versus HC and MCI versus HC conditions. An acceptable to excellent classification accuracy was found for MCI and VCI (HC versus VCI; RF: 90%, LR: 91%. HC versus MCI; RF: 75%; LR: 87%). CONCLUSION SASG allows the early assessment of cognitive impairment through ecological tasks and potentially in a self-administered way. These features make this platform suitable for being considered a useful digital phenotyping tool, allowing a non-invasive and valid neuropsychological evaluation, with evident implications for future digital-health trails and rehabilitation.
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Affiliation(s)
- Sara Isernia
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan-Florence, Italy
| | - Monia Cabinio
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan-Florence, Italy
| | - Sonia Di Tella
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan-Florence, Italy.,Department of Psychology, Universitá Cattolica del Sacro Cuore, Milan, Italy
| | - Stefania Pazzi
- Consorzio di Bioingegneria e Informatica Medica (CBIM), Pavia, Italy
| | | | - Filippo Gerli
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan-Florence, Italy
| | | | - Gemma Lombardi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan-Florence, Italy
| | - Claudio Macchi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan-Florence, Italy
| | - Sandro Sorbi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan-Florence, Italy.,Universitá degli Studi di Firenze, NEUROFARBA, Firenze, Italy
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16
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Scassellati C, Galoforo AC, Esposito C, Ciani M, Ricevuti G, Bonvicini C. Promising Intervention Approaches to Potentially Resolve Neuroinflammation And Steroid Hormones Alterations in Alzheimer's Disease and Its Neuropsychiatric Symptoms. Aging Dis 2021; 12:1337-1357. [PMID: 34341712 PMCID: PMC8279527 DOI: 10.14336/ad.2021.0122] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/22/2021] [Indexed: 12/11/2022] Open
Abstract
Neuroinflammation is a biological process by which the central nervous system responds to stimuli/injuries affecting its homeostasis. So far as this reactive response becomes exacerbated and uncontrolled, it can lead to neurodegeneration, compromising the cognitive and neuropsychiatric domains. Parallelly, modifications in the hypothalamic signaling of neuroprotective hormones linked also to the inflammatory responses of microglia and astrocytes can exacerbate these processes. To complicate the picture, modulations in the gut microbiota (GM) can induce changes in neuroinflammation, altering cognitive and neuropsychiatric functioning. We conducted a web-based search on PubMed. We described studies regarding the cross-talk among microglia and astrocytes in the neuroinflammation processes, along with the role played by the steroid hormones, and how this can reflect on cognitive decline/neurodegeneration, in particular on Alzheimer's Disease (AD) and its neuropsychiatric manifestations. We propose and support the huge literature showing the potentiality of complementary/alternative therapeutic approaches (nutraceuticals) targeting the sustained inflammatory response, the dysregulation of hypothalamic system and the GM composition. NF-κB and Keap1/Nrf2 are the main molecular targets on which a list of nutraceuticals can modulate the altered processes. Since there are some limitations, we propose a new intervention natural treatment in terms of Oxygen-ozone (O2-O3) therapy that could be potentially used for AD pathology. Through a meta-analytic approach, we found a significant modulation of O3 on inflammation-NF-κB/NLRP3 inflammasome/Toll-Like Receptor 4 (TLR4)/Interleukin IL-17α signalling, reducing mRNA (p<0.00001 Odd Ratio (OR)=-5.25 95% CI:-7.04/-3.46) and protein (p<0.00001 OR=-4.85 95%CI:-6.89/-2.81) levels, as well as on Keap1/Nrf2 pathway. Through anti-inflammatory, immune, and steroid hormones modulation and anti-microbial activities, O3 at mild therapeutic concentrations potentiated with nutraceuticals and GM regulators could determine combinatorial effects impacting on cognitive and neurodegenerative domains, neuroinflammation and neuroendocrine signalling, directly or indirectly through the mediation of GM.
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Affiliation(s)
- Catia Scassellati
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
| | - Antonio Carlo Galoforo
- Oxygen-Ozone Therapy Scientific Society (SIOOT), Gorle, Italy.
- University of Pavia, Pavia, Italy.
| | - Ciro Esposito
- Department of Internal Medicine and Therapeutics, University of Pavia, Italy.
- Nephrology and dialysis unit, ICS S. Maugeri SPA SB Hospital, Pavia, Italy.
- P.D. High School in Geriatrics, University of Pavia, Italy.
| | - Miriam Ciani
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
| | - Giovanni Ricevuti
- P.D. High School in Geriatrics, University of Pavia, Italy.
- Department of Drug Sciences, University of Pavia, Italy.
- St. Camillus Medical University, Rome, Italy.
| | - Cristian Bonvicini
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
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17
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Delgado A, Cholevas C, Theoharides TC. Neuroinflammation in Alzheimer's disease and beneficial action of luteolin. Biofactors 2021; 47:207-217. [PMID: 33615581 DOI: 10.1002/biof.1714] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/07/2020] [Indexed: 12/13/2022]
Abstract
Alzheimer's disease (AD), already the world's most common form of dementia, is projected to continue increasing in prevalence over the next several decades. The current lack of understanding of the pathogenesis of AD has hampered the development of effective treatments. Historically, AD research has been predicated on the amyloid cascade hypothesis (ACH), which attributes disease progression to the build-up of amyloid protein. However, multiple clinical studies of drugs interfering with ACH have failed to show any benefit demonstrating that AD etiology is more complex than previously thought. Here we review the current literature on the emerging key role of neuroinflammation, especially activation of microglia, in AD pathogenesis. Moreover, we provide compelling evidence that certain flavonoids, especially luteolin formulated in olive pomace oil together with hydroxytyrosol, offers a reasonable prophylactic treatment approach due to its many beneficial actions.
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Affiliation(s)
- Alejandro Delgado
- Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts, USA
- Biomedical Sciences Program, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Christos Cholevas
- Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts, USA
- BrainGate, Thessaloniki, Greece
| | - Theoharis C Theoharides
- Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts, USA
- Biomedical Sciences Program, Tufts University School of Medicine, Boston, Massachusetts, USA
- BrainGate, Thessaloniki, Greece
- School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, Massachusetts, USA
- Department of Internal Medicine, Tufts University School of Medicine and Tufts Medical Center, Boston, Massachusetts, USA
- Department of Psychiatry, Tufts University School of Medicine and Tufts Medical Center, Boston, Massachusetts, USA
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18
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Huanglian Jiedu decoction remodels the periphery microenvironment to inhibit Alzheimer's disease progression based on the "brain-gut" axis through multiple integrated omics. ALZHEIMERS RESEARCH & THERAPY 2021; 13:44. [PMID: 33579351 PMCID: PMC7881564 DOI: 10.1186/s13195-021-00779-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 01/25/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND In recent years, excellent results have suggested an association between the "brain-gut" axis and Alzheimer's disease (AD) progression, yet the role of the "brain-gut" axis in AD pathogenesis still remains obscure. Herein, we provided a potential link between the central and peripheral neuroinflammatory disorders in AD progression. METHODS The Morris water maze (MWM) test, immunohistochemistry, ELISA, ProcartaPlex Multiplex immunoassay, multiple LC-MS/MS methods, and the V3-V4 regions of 16S rRNA genes were applied to explore potential biomarkers. RESULTS In Tg-APP/PS1 mice, gut dysbiosis and lipid metabolism were highly associated with AD-like neuroinflammation. The combination of inflammatory factors (IL-6 and INF-γ), phosphatidylcholines (PCs) and SCFA-producing bacteria were expected to be early diagnostic biomarkers for AD. Huanglian Jiedu decoction (HLJDD) suppressed gut dysbiosis and the associated Aβ accumulation, harnessed neuroinflammation and reversed cognitive impairment. CONCLUSION Together, our findings highlighted the roles of neuroinflammation induced by gut dysbiosis and lipid metabolism disorder in AD progression. This integrated metabolomics approach showed its potential to understand the complex mechanisms of HLJDD in the treatment of AD.
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19
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Gonçalves MDL, Truta LAN, Sales MGF, Moreira FTC. Electrochemical Point-of Care (PoC) Determination of Interleukin-6 (IL-6) Using a Pyrrole (Py) Molecularly Imprinted Polymer (MIP) on a Carbon-Screen Printed Electrode (C-SPE). ANAL LETT 2021. [DOI: 10.1080/00032719.2021.1879108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- M. de Lurdes Gonçalves
- BioMark/ISEP, School of Engineering, Polytechnic of Porto, Porto, Portugal
- CEB, Centre of Biological Engineering, Minho University, Braga, Portugal
| | - Liliana A. N. Truta
- BioMark/ISEP, School of Engineering, Polytechnic of Porto, Porto, Portugal
- CEB, Centre of Biological Engineering, Minho University, Braga, Portugal
| | - M. Goreti F. Sales
- BioMark/UC, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal
- CEB, Centre of Biological Engineering, Minho University, Braga, Portugal
| | - Felismina T. C. Moreira
- BioMark/ISEP, School of Engineering, Polytechnic of Porto, Porto, Portugal
- CEB, Centre of Biological Engineering, Minho University, Braga, Portugal
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20
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Mai Y, Yu Q, Zhu F, Luo Y, Liao W, Zhao L, Xu C, Fang W, Ruan Y, Cao Z, Lei M, Au L, Mok VCT, Shi L, Liu J. AD Resemblance Atrophy Index as a Diagnostic Biomarker for Alzheimer's Disease: A Retrospective Clinical and Biological Validation. J Alzheimers Dis 2021; 79:1023-1032. [PMID: 33459705 DOI: 10.3233/jad-201033] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Magnetic resonance imaging (MRI) provides objective information about brain structural atrophy in patients with Alzheimer's disease (AD). This multi-structural atrophic information, when integrated as a single differential index, has the potential to further elevate the accuracy of AD identification from normal control (NC) compared to the conventional structure volumetric index. OBJECTIVE We herein investigated the performance of such an MRI-derived AD index, AD-Resemblance Atrophy Index (AD-RAI), as a neuroimaging biomarker in clinical scenario. METHOD Fifty AD patients (19 with the Amyloid, Tau, Neurodegeneration (ATN) results assessed in cerebrospinal fluid) and 50 age- and gender-matched NC (19 with ATN results assessed using positron emission tomography) were recruited in this study. MRI-based imaging biomarkers, i.e., AD-RAI, were quantified using AccuBrain®. The accuracy, sensitivity, specificity, and area under the ROC curve (AUC) of these MRI-based imaging biomarkers were evaluated with the diagnosis result according to clinical criteria for all subjects and ATN biological markers for the subgroup. RESULTS In the whole groups of AD and NC subjects, the accuracy of AD-RAI was 91%, sensitivity and specificity were 88% and 96%, respectively, and the AUC was 92%. In the subgroup of 19 AD and 19 NC with ATN results, AD-RAI results matched completely with ATN classification. AD-RAI outperforms the volume of any single brain structure measured. CONCLUSION The finding supports the hypothesis that MRI-derived composite AD-RAI is a more accurate imaging biomarker than individual brain structure volumetry in the identification of AD from NC in the clinical scenario.
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Affiliation(s)
- Yingren Mai
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qun Yu
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Feiqi Zhu
- Cognitive Impairment Ward of Neurology Department, The Third Affiliated Hospital of Shenzhen University Medical College, Shenzhen, China
| | - Yishan Luo
- BrainNow Research Institute, Shenzhen, China
| | - Wang Liao
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lei Zhao
- BrainNow Research Institute, Shenzhen, China
| | - Chunyan Xu
- Cognitive Impairment Ward of Neurology Department, The Third Affiliated Hospital of Shenzhen University Medical College, Shenzhen, China
| | - Wenli Fang
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yuting Ruan
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhiyu Cao
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ming Lei
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lisa Au
- Gerald Choa Neuroscience Centre, Lui Che Woo Institute of Innovative Medicine, Division of Neurology, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Vincent C T Mok
- BrainNow Research Institute, Shenzhen, China.,Gerald Choa Neuroscience Centre, Lui Che Woo Institute of Innovative Medicine, Division of Neurology, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Lin Shi
- BrainNow Research Institute, Shenzhen, China.,Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jun Liu
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Laboratory of RNA and Major Diseases of Brain and Heart, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, China
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21
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Picciolini S, Gualerzi A, Carlomagno C, Cabinio M, Sorrentino S, Baglio F, Bedoni M. An SPRi-based biosensor pilot study: Analysis of multiple circulating extracellular vesicles and hippocampal volume in Alzheimer's disease. J Pharm Biomed Anal 2020; 192:113649. [PMID: 33038641 DOI: 10.1016/j.jpba.2020.113649] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 01/16/2023]
Abstract
One of the main hurdles in the study of Alzheimer's Disease (AD) is the lack of easily accessible and sensitive biomarkers for the diagnosis, the prediction of the disease progression rate and the evaluation of rehabilitative and pharmacological treatments. Extracellular Vesicles (EVs) are nanoscale particles released by body cells, studied as promising biomarkers of AD as they are involved in the onset and progression of the disease. In the strive for a reliable and sensitive method to analyze EVs, we applied our recently developed biosensor based on Surface Plasmon Resonance imaging (SPRi) technology for the identification and profiling of neural EVs populations circulating in the plasma of 10 AD patients and 10 healthy subjects. The SPRi-array was designed to separate simultaneously EVs released by neurons, astrocytes, microglia and oligodendrocytes, and to evaluate the presence and the relative amount of specific surface molecules related to pathological processes including translocator protein (TSPO), β-Amyloid and ganglioside M1. As results, significant variations in the relative amount and cargoes of specific brain-derived populations of EVs were observed comparing EVs coming from AD patients and healthy subjects, finding the main differences in the activation phenotype of microglia EVs, in the lipid moieties on generic EVs and in the β-Amyloid expression on surfaces of neuronal EVs. Besides, the demonstrated correlation of SPRi data with Magnetic Resonance Imaging analysis, provided support for using the SPRi-based biosensor for the evaluation of neurodegeneration detecting and characterizing circulating EVs as peripheral biomarkers for the diagnosis and monitoring of progression and rehabilitation treatments in AD patients.
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Affiliation(s)
- Silvia Picciolini
- IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy
| | - Alice Gualerzi
- IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy
| | | | - Monia Cabinio
- IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy
| | | | - Francesca Baglio
- IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy
| | - Marzia Bedoni
- IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy.
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22
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Saresella M, Marventano I, Piancone F, La Rosa F, Galimberti D, Fenoglio C, Scarpini E, Clerici M. IL-33 and its decoy sST2 in patients with Alzheimer's disease and mild cognitive impairment. J Neuroinflammation 2020; 17:174. [PMID: 32505187 PMCID: PMC7276088 DOI: 10.1186/s12974-020-01806-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 04/06/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Interleukin-33 is a cytokine endowed with pro- and anti-inflammatory properties that plays a still poorly defined role in the pathogenesis of a number of central nervous system (CNS) conditions including Alzheimer's disease (AD). We analyzed this cytokine and its decoy receptor sST2 in Alzheimer's disease (AD) and mild cognitive impairment (MCI). METHOD IL-33 and sST2 were analyzed in serum and CSF of AD and MCI patients, comparing the results to those obtained in age-matched healthy controls (HC). Because of the ambiguous role of IL-33 in inflammation, the concentration of both inflammatory (IL-1β and IL-6) and anti-inflammatory (IL-10) cytokines was analyzed as well in serum and cerebrospinal fluid (CSF) of the same individuals. Finally, the effect of IL-33 on in vitro Aβ42-stimulated monocytes of AD, MCI, and HC individuals was examined. RESULTS As compared to HC, (1) IL-33 was significantly decreased in serum and CSF of AD and MCI, (2) sST2 was increased in serum of AD and MCI but was undetectable in CSF, (3) serum and CSF IL-1β concentration was significantly increased and that of IL-10 was reduced in AD and MCI, whereas no differences were observed in IL-6. In vitro addition of IL-33 to LPS+Aβ 42-stimulated monocytes downregulated IL-1β generation in MCI and HC, but not in AD, and stimulated IL-10 production in HC alone. IL-33 addition also resulted in a significant reduction of NF-kB nuclear translocation in LPS+Aβ42-stimulated monocytes of HC alone. CONCLUSIONS These data support the hypothesis that IL-33 plays a complex anti-inflammatory role that is lost in AD- and MCI-associated neuroinflammation; results herein also suggest a possible use of IL-33 as a novel therapeutic approach in AD and MCI.
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Affiliation(s)
- Marina Saresella
- IRCCS Fondazione Don Carlo Gnocchi, Laboratory of Molecular Medicine and Biotechnology, Via Capecelatro, 66, 20148, Milan, Italy.
| | - Ivana Marventano
- IRCCS Fondazione Don Carlo Gnocchi, Laboratory of Molecular Medicine and Biotechnology, Via Capecelatro, 66, 20148, Milan, Italy
| | - Federica Piancone
- IRCCS Fondazione Don Carlo Gnocchi, Laboratory of Molecular Medicine and Biotechnology, Via Capecelatro, 66, 20148, Milan, Italy
| | - Francesca La Rosa
- IRCCS Fondazione Don Carlo Gnocchi, Laboratory of Molecular Medicine and Biotechnology, Via Capecelatro, 66, 20148, Milan, Italy
| | - Daniela Galimberti
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.,Centro Dino Ferrari, Milan, Italy.,Fondazione IRCCS Ca' Granda, Ospedale Policlinico, Milan, Italy
| | - Chiara Fenoglio
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.,Centro Dino Ferrari, Milan, Italy.,Fondazione IRCCS Ca' Granda, Ospedale Policlinico, Milan, Italy
| | - Elio Scarpini
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.,Centro Dino Ferrari, Milan, Italy.,Fondazione IRCCS Ca' Granda, Ospedale Policlinico, Milan, Italy
| | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi, Laboratory of Molecular Medicine and Biotechnology, Via Capecelatro, 66, 20148, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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23
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Mancuso R, Cabinio M, Agostini S, Baglio F, Clerici M. HSV-1-Specific IgG 3 Titers Correlate with Brain Cortical Thinning in Individuals with Mild Cognitive Impairment and Alzheimer's Disease. Vaccines (Basel) 2020; 8:vaccines8020255. [PMID: 32485994 PMCID: PMC7349921 DOI: 10.3390/vaccines8020255] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 11/30/2022] Open
Abstract
Repeated reactivations of latent herpes simplex virus type-1 (HSV-1) in the central nervous system (CNS) may contribute to neurodegeneration in Alzheimer’s disease (AD) patients. Immune response is a key element for the control of viral reactivation. HSV-1 uses a number of strategies to evade immune recognition, Immunoglobulin G 3 (IgG3) alone counteracts humoral immunoevasion, as it is the only IgG subclass that is not blocked by the HSV-1 Fc receptor, a protein that protects virion and infected cells from antibody-mediated effector mechanisms. We examined HSV-1-specific IgG3 titers in serum of AD (n = 70) and mild cognitive impairment (MCI) (n = 61) subjects comparing the results to those of 67 age- and sex-matched healthy controls (HC); associations between MRI-determined brain cortical health and HSV-1-specific IgG3 were analyzed in a subgroup of AD and MCI subjects. HSV-1-specific IgG3 were more frequently detected in MCI compared to AD and HC subjects. Significant inverse correlations were found between IgG3 titers and brain cortical thickness in areas typically involved in dementia and HSV-1 encephalitis in AD patients; interestingly, this negative correlation was much less important in MCI subjects. All together these results suggest that in AD an inefficient IgG3 humoral immune response, failing to block viral replication, contributes to progressive neurodegeneration.
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Affiliation(s)
- Roberta Mancuso
- IRCCS Fondazione Don Carlo Gnocchi, 20148 Milano, Italy; (M.C.); (S.A.); (F.B.); (M.C.)
- Correspondence: ; Tel.: +39-020308375; Fax: +39-0250330414
| | - Monia Cabinio
- IRCCS Fondazione Don Carlo Gnocchi, 20148 Milano, Italy; (M.C.); (S.A.); (F.B.); (M.C.)
| | - Simone Agostini
- IRCCS Fondazione Don Carlo Gnocchi, 20148 Milano, Italy; (M.C.); (S.A.); (F.B.); (M.C.)
| | - Francesca Baglio
- IRCCS Fondazione Don Carlo Gnocchi, 20148 Milano, Italy; (M.C.); (S.A.); (F.B.); (M.C.)
| | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi, 20148 Milano, Italy; (M.C.); (S.A.); (F.B.); (M.C.)
- Department of Pathophysiology and Transplantation, University of Milano, 20148 Milano, Italy
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24
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Carlomagno C, Cabinio M, Picciolini S, Gualerzi A, Baglio F, Bedoni M. SERS-based biosensor for Alzheimer disease evaluation through the fast analysis of human serum. JOURNAL OF BIOPHOTONICS 2020; 13:e201960033. [PMID: 31868266 DOI: 10.1002/jbio.201960033] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
Alzheimer disease (AD) is the most common form of dementia in the elderly, progressively affecting the cognitive functions with a complex diagnostic procedure that limits the time for a prompt intervention. In this study we optimized a reliable protocol for the analysis of AD patients and healthy subjects' serum using the Surface Enhanced Raman Spectroscopy (SERS), taking into consideration the effect of different variables on the final spectra, analyzed and compared through multivariate analysis and correlated with hippocampus volume. As results, we demonstrated a statistical difference between the spectra collected from the two investigated groups, with an accuracy, precision and specificity of respectively 83%, 86%, and 86%. The correlation of these data with those obtained from MRI, demonstrated a direct correlation between Raman spectra and hippocampus degeneration showing the Raman Spectroscopy (RS) as a potential tool for the monitoring of AD progression and rehabilitation treatments.
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Affiliation(s)
| | - Monia Cabinio
- Santa Maria Nascente Hospital, IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy
| | - Silvia Picciolini
- Santa Maria Nascente Hospital, IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy
| | - Alice Gualerzi
- Santa Maria Nascente Hospital, IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy
| | - Francesca Baglio
- Santa Maria Nascente Hospital, IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy
| | - Marzia Bedoni
- Santa Maria Nascente Hospital, IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy
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25
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Rahayel S, Bocti C, Sévigny Dupont P, Joannette M, Lavallée MM, Nikelski J, Chertkow H, Joubert S. Subcortical amyloid load is associated with shape and volume in cognitively normal individuals. Hum Brain Mapp 2019; 40:3951-3965. [PMID: 31148327 DOI: 10.1002/hbm.24680] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/09/2019] [Accepted: 05/21/2019] [Indexed: 01/18/2023] Open
Abstract
Amyloid-beta (Aβ) deposition is one of the main hallmarks of Alzheimer's disease. The study assessed the associations between cortical and subcortical 11 C-Pittsburgh Compound B (PiB) retention, namely, in the hippocampus, amygdala, putamen, caudate, pallidum, and thalamus, and subcortical morphology in cognitively normal individuals. We recruited 104 cognitive normal individuals who underwent extensive neuropsychological assessment, PiB-positron emission tomography (PET) scan, and 3-T magnetic resonance imaging (MRI) acquisition of T1-weighted images. Global, cortical, and subcortical regional PiB retention values were derived from each scan and subcortical morphology analyses were performed to investigate vertex-wise local surface and global volumes, including the hippocampal subfields volumes. We found that subcortical regional Aβ was associated with the surface of the hippocampus, thalamus, and pallidum, with changes being due to volume and shape. Hippocampal Aβ was marginally associated with volume of the whole hippocampus as well as with the CA1 subfield, subiculum, and molecular layer. Participants showing higher subcortical Aβ also showed worse cognitive performance and smaller hippocampal volumes. In contrast, global and cortical PiB uptake did not associate with any subcortical metrics. This study shows that subcortical Aβ is associated with subcortical surface morphology in cognitively normal individuals. This study highlights the importance of quantifying subcortical regional PiB retention values in these individuals.
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Affiliation(s)
- Shady Rahayel
- Department of Psychology, Université de Montréal, Montreal, Canada.,Research Centre, Institut universitaire de gériatrie de Montréal, Montreal, Canada
| | - Christian Bocti
- Department of Neurology, Université de Sherbrooke, Sherbrooke, Canada
| | - Pénélope Sévigny Dupont
- Department of Psychology, Université de Montréal, Montreal, Canada.,Research Centre, Institut universitaire de gériatrie de Montréal, Montreal, Canada
| | - Maude Joannette
- Department of Psychology, Université de Montréal, Montreal, Canada.,Research Centre, Institut universitaire de gériatrie de Montréal, Montreal, Canada
| | - Marie Maxime Lavallée
- Department of Psychology, Université de Montréal, Montreal, Canada.,Research Centre, Institut universitaire de gériatrie de Montréal, Montreal, Canada
| | - Jim Nikelski
- Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Canada
| | - Howard Chertkow
- Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Canada.,Department of Neurology and Neurosurgery, McGill University, Montreal, Canada
| | - Sven Joubert
- Department of Psychology, Université de Montréal, Montreal, Canada.,Research Centre, Institut universitaire de gériatrie de Montréal, Montreal, Canada
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