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Russo C, Edwards KD, Margetts G, Kleidonas S, Zaibi NS, Clapham JC, Zaibi MS. Effects of Salvia officinalis L. and Chamaemelum nobile (L.) extracts on inflammatory responses in two models of human cells: Primary subcutaneous adipocytes and neuroblastoma cell line (SK-N-SH). JOURNAL OF ETHNOPHARMACOLOGY 2021; 268:113614. [PMID: 33246119 DOI: 10.1016/j.jep.2020.113614] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/03/2020] [Accepted: 11/18/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Salvia officinalis L. (sage), and Chamaemelum nobile (L.) (chamomile) have been used traditionally to treat various inflammatory conditions. AIMS Our study aims to investigate the anti-inflammatory properties of both plant extracts in IL-1β-stimulated neuroblastoma cells (SK-N-SH) and human subcutaneous mature adipocytes, as well as their potential protective effects against mature adipocytes conditioned media (ACM)-induced neuro-inflammation. MATERIALS AND METHODS Human subcutaneous mature adipocytes and neuroblastoma cells were treated with 5 μg/ml (low dose: LD) and 50 μg/ml (high dose: HD) of each extract, with or without 0.5 ng/ml of human recombinant IL-1β. To understand the cross talk between fat tissue and neuronal cells, SK-N-SH cell line was incubated with ACM 10%, in presence or absence of both extracts LD and HD. Following 4, and 24 h incubation, the released MCP-1, IL-6, IL-8, TNF-α, ICAM-1, VCAM-1 and SAA levels were measured using MSD Cytokines and Chemokines assay kits, and the cells were used for gene expression. RNA was quantified using Qubit™ RNA HS Assay. RNA aliquots were shipped to Eurofins Genomics (Aarhus, Denmark) for expression analysis on the human Clariom™ GO Screen Assay (952,361; ThermoFisher). RESULTS Chamomile showed stronger effects compared to sage in both cell lines, at 4 and 24 h. Adipocytes acute treatment with sage decreased MCP-1, IL-6, IL-8 (p < 0.001), and TNF-α (p < 0.05) basal levels. This was mirrored at MCP-1 transcriptional level. Chronic treatment with both extracts resulted in a significant reduction in ICAM-1, VCAM-1 and SAA (p < 0.001) levels, in IL-1β-stimulated adipocytes. However, in SK-N-SH cells, sage increased the basal levels of many cytokines and chemokines on both protein and transcriptional levels. This was also observed in IL-1β-stimulated cells. In chamomile treated SK-N-SH cells, acute and chronic treatments decreased MCP-1 (p < 0.001), IL-6 (p < 0.01), TNF-α (p < 0.01), and IL-8 (p < 0.001) basal levels. In IL1-β-stimulated SK-N-SH cells, chamomile HD induced a significant reduction in TNF-α after both acute and chronic treatments respectively, by 52% and 81%. At transcriptional level, this effect was only reflected at 4 h. ICAM-1, VCAM-1 and SAA levels were reduced in most of the studied conditions. In IL-1β treated adipocytes, chamomile showed stronger reduction in MCP-1, ICAM-1 and VCAM-1 expression, however no significant reduction in TNF-α and IL-8 was observed, despite the decrease in basal levels. In SK-N-SH cells, ACM increased MCP-1, IL-6, IL-8, TNF-α, VCAM-1 and SAA levels. Sage HD acute treatment resulted in a reduction of ACM effect on IL-6, IL-8 and VCAM-1, with greater effect of chamomile on MCP-1 (p < 0.05); IL-6 (p < 0.001); TNF-α (p < 0.001); VCAM-1 (p < 0.001); and SAA (p < 0.001). This protective effect was also observed after chronic treatment. However, both extracts potentiated significantly the ACM-pro-inflammatory effect on IL-8 (p < 0.001). CONCLUSIONS Sage decreased the pro-inflammatory markers mostly in human adipocytes, whereas chamomile showed a strong reduction in both cell populations. Both extracts reduced the ACM-induced inflammation effect and might be used as a preventive treatment for late-life cognitive impairment related to low-grade chronic inflammation associated with obesity. Further studies are needed to investigate their combination on other chronic inflammation-related diseases such as type 2 diabetes or rheumatoid arthritis.
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Affiliation(s)
- Carla Russo
- Buckingham Institute for Translational Medicine, The Clore Laboratory, The University of Buckingham, Hunter Street, MK18 1EG, Buckingham, UK.
| | - Kieron D Edwards
- Sibelius Ltd., 20 East Central, 127 Olympic Avenue, Milton Park, Abingdon, Oxfordshire, OX14 4SA, UK.
| | - Gemma Margetts
- Buckingham Institute for Translational Medicine, The Clore Laboratory, The University of Buckingham, Hunter Street, MK18 1EG, Buckingham, UK.
| | - Sotirios Kleidonas
- Sibelius Ltd., 20 East Central, 127 Olympic Avenue, Milton Park, Abingdon, Oxfordshire, OX14 4SA, UK.
| | - Nawel S Zaibi
- European Genomic Institute for Diabetes (EGID), Hospital Claude Huriez, 59000, Lille, France.
| | - John C Clapham
- Buckingham Institute for Translational Medicine, The Clore Laboratory, The University of Buckingham, Hunter Street, MK18 1EG, Buckingham, UK.
| | - Mohamed S Zaibi
- Buckingham Institute for Translational Medicine, The Clore Laboratory, The University of Buckingham, Hunter Street, MK18 1EG, Buckingham, UK.
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202
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Dutta N, Lillehoj PB, Estrela P, Dutta G. Electrochemical Biosensors for Cytokine Profiling: Recent Advancements and Possibilities in the Near Future. BIOSENSORS 2021; 11:94. [PMID: 33806879 PMCID: PMC8004910 DOI: 10.3390/bios11030094] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/14/2021] [Accepted: 03/18/2021] [Indexed: 02/07/2023]
Abstract
Cytokines are soluble proteins secreted by immune cells that act as molecular messengers relaying instructions and mediating various functions performed by the cellular counterparts of the immune system, by means of a synchronized cascade of signaling pathways. Aberrant expression of cytokines can be indicative of anomalous behavior of the immunoregulatory system, as seen in various illnesses and conditions, such as cancer, autoimmunity, neurodegeneration and other physiological disorders. Cancer and autoimmune diseases are particularly adept at developing mechanisms to escape and modulate the immune system checkpoints, reflected by an altered cytokine profile. Cytokine profiling can provide valuable information for diagnosing such diseases and monitoring their progression, as well as assessing the efficacy of immunotherapeutic regiments. Toward this goal, there has been immense interest in the development of ultrasensitive quantitative detection techniques for cytokines, which involves technologies from various scientific disciplines, such as immunology, electrochemistry, photometry, nanotechnology and electronics. This review focusses on one aspect of this collective effort: electrochemical biosensors. Among the various types of biosensors available, electrochemical biosensors are one of the most reliable, user-friendly, easy to manufacture, cost-effective and versatile technologies that can yield results within a short period of time, making it extremely promising for routine clinical testing.
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Affiliation(s)
- Nirmita Dutta
- School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India;
| | - Peter B. Lillehoj
- Department of Mechanical Engineering, Rice University, Houston, TX 77005, USA;
| | - Pedro Estrela
- Centre for Biosensors, Bioelectronics and Biodevices (C3Bio) and Department of Electronic & Electrical Engineering, University of Bath, Bath BA2 7AY, UK
| | - Gorachand Dutta
- School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India;
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203
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Tsai SJ. Role of interleukin 8 in depression and other psychiatric disorders. Prog Neuropsychopharmacol Biol Psychiatry 2021; 106:110173. [PMID: 33186640 DOI: 10.1016/j.pnpbp.2020.110173] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/06/2020] [Accepted: 11/08/2020] [Indexed: 12/28/2022]
Abstract
Low grade neuroinflammation has been suggested as one of the underlying mechanisms of many psychiatric diseases as well as cognitive disorders. Interleukin 8 (IL-8), a proinflammatory cytokine produced by many cell types including macrophage and microglia, mainly functions as a neutrophil chemoattractant in the bloodstream. IL-8 is also found in the brain, where it is released from microglia in response to proinflammatory stimuli. In this review, we highlight studies focusing on the role of IL-8 in psychiatric diseases such as major depression, bipolar disorder, schizophrenia, sleep disorder, autism spectrum disorder, anxiety disorders and dementia. Increased peripheral IL-8 levels have been reported in these diseases, particularly in schizophrenic disorder, bipolar disorder, obstructive sleep apnea and autism spectrum disorder. The literature on IL-8 and major depression is inconsistent. IL-8 has been found to be a factor associated with schizophrenic prognosis and therapeutic response, and may affect a wide range of symptomatology. Considering that the exact role of immune alterations is still under research, the success of immune-based therapies in psychiatric diseases is limited for the time being.
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Affiliation(s)
- Shih-Jen Tsai
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan.
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204
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Feng YS, Tan ZX, Wu LY, Dong F, Zhang F. The involvement of NLRP3 inflammasome in the treatment of neurodegenerative diseases. Biomed Pharmacother 2021; 138:111428. [PMID: 33667787 DOI: 10.1016/j.biopha.2021.111428] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/06/2021] [Accepted: 02/21/2021] [Indexed: 02/07/2023] Open
Abstract
In an ageing society, neurodegenerative diseases have attracted attention because of their high incidence worldwide. Despite extensive research, there is a lack of conclusive insights into the pathogenesis of neurodegenerative diseases, which limit the strategies for symptomatic treatment. Therefore, better elucidation of the molecular mechanisms involved in neurodegenerative diseases can provide an important theoretical basis for the discovery of new and effective prevention and treatment methods. The innate immune system is activated during the ageing process and in response to neurodegenerative diseases. Inflammasomes are multiprotein complexes that play an important role in the activation of the innate immune system. They mediate inflammatory reactions and pyroptosis, which are closely involved in neurodegeneration. There are different types of inflammasomes, although the nucleotide-binding oligomerization domain-like receptor pyrin domain-containing 3 (NLRP3) inflammasome is the most common inflammasome; NLRP3 plays an important role in the pathogenesis of neurodegenerative diseases. In this review, we will discuss the mechanisms that are involved in the activation of the NLRP3 inflammasome and its crucial role in the pathology of neurodegenerative disorders, such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis and multiple sclerosis. We will also review various treatments that target the NLRP3 inflammasome pathway and alleviate neuroinflammation. Finally, we will summarize the novel treatment strategies for neurodegenerative disorders.
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Affiliation(s)
- Ya-Shuo Feng
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Zi-Xuan Tan
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Lin-Yu Wu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Fang Dong
- Department of Clinical Laboratory Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Feng Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China; Hebei Key Laboratory of Critical Disease Mechanism and intervention, Shijiazhuang 050051, PR China.
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205
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Ekström I. Serum C-Reactive Protein Is Negatively Associated With Olfactory Identification Ability in Older Adults. Iperception 2021; 12:20416695211009928. [PMID: 33948158 PMCID: PMC8054135 DOI: 10.1177/20416695211009928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 03/25/2021] [Indexed: 01/08/2023] Open
Abstract
IMPORTANCE Olfactory deficits are common in aging and associated with several conditions linked to inflammation. A few studies suggest that increased concentration of pro-inflammatory biomarkers may be related to olfactory deficits, but these associations are understudied in population-based samples. OBJECTIVE To investigate the association between serum concentrations of C-reactive protein (CRP) and olfactory identification level as well as rate of change in aging. METHODS We included 1,721 participants (mean age 70.5 years; 61.9% female) with at least two olfactory assessments across the 12-year follow-up. Baseline level and change in odor identification were estimated with linear mixed models as a function of CRP levels, derived from blood plasma at baseline. RESULTS Results indicated a negative dose-response association between CRP level and odor identification scores at baseline, after adjustment for demographic, cognitive, health, and lifestyle factors. CRP levels ranging between 11 and 20 mg/L were significantly related to lower olfactory ability (β = -0.811, 95% confidence interval [CI] [-1.503 to -0.118]; p = .022). Likewise, CRP values above 20 mg/L were related to lower olfactory scores, an association that approached statistical significance (β = -0.996, 95% CI [-2.045 to 0.054]; p = .063). We found no associations between CRP and olfactory change (ps > .368). Sensitivity analyses showed that associations between CRP and olfaction were confined to younger participants (age ≤72 years) and men (ps < .034). CONCLUSIONS Our findings suggest a negative association between serum CRP levels and olfactory identification ability in aging that may be dependent on age and sex.
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Affiliation(s)
- Ingrid Ekström
- Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden
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206
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Leng F, Edison P. Neuroinflammation and microglial activation in Alzheimer disease: where do we go from here? Nat Rev Neurol 2021; 17:157-172. [PMID: 33318676 DOI: 10.1038/s41582-020-00435-y] [Citation(s) in RCA: 1185] [Impact Index Per Article: 395.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/11/2020] [Indexed: 12/17/2022]
Abstract
Alzheimer disease (AD) is the most common form of neurodegenerative disease, estimated to contribute 60-70% of all cases of dementia worldwide. According to the prevailing amyloid cascade hypothesis, amyloid-β (Aβ) deposition in the brain is the initiating event in AD, although evidence is accumulating that this hypothesis is insufficient to explain many aspects of AD pathogenesis. The discovery of increased levels of inflammatory markers in patients with AD and the identification of AD risk genes associated with innate immune functions suggest that neuroinflammation has a prominent role in the pathogenesis of AD. In this Review, we discuss the interrelationships between neuroinflammation and amyloid and tau pathologies as well as the effect of neuroinflammation on the disease trajectory in AD. We specifically focus on microglia as major players in neuroinflammation and discuss the spatial and temporal variations in microglial phenotypes that are observed under different conditions. We also consider how these cells could be modulated as a therapeutic strategy for AD.
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Affiliation(s)
- Fangda Leng
- Department of Brain Sciences, Imperial College London, Hammersmith Hospital Campus, London, UK
| | - Paul Edison
- Department of Brain Sciences, Imperial College London, Hammersmith Hospital Campus, London, UK.
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207
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Halim SA, Sikandari AG, Khan A, Wadood A, Fatmi MQ, Csuk R, Al-Harrasi A. Structure-Based Virtual Screening of Tumor Necrosis Factor-α Inhibitors by Cheminformatics Approaches and Bio-Molecular Simulation. Biomolecules 2021; 11:329. [PMID: 33671607 PMCID: PMC7926523 DOI: 10.3390/biom11020329] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/11/2021] [Accepted: 02/17/2021] [Indexed: 12/28/2022] Open
Abstract
Tumor necrosis factor-α (TNF-α) is a drug target in rheumatoid arthritis and several other auto-immune disorders. TNF-α binds with TNF receptors (TNFR), located on the surface of several immunological cells to exert its effect. Hence, the use of inhibitors that can hinder the complex formation of TNF-α/TNFR can be of medicinal significance. In this study, multiple chem-informatics approaches, including descriptor-based screening, 2D-similarity searching, and pharmacophore modelling were applied to screen new TNF-α inhibitors. Subsequently, multiple-docking protocols were used, and four-fold post-docking results were analyzed by consensus approach. After structure-based virtual screening, seventeen compounds were mutually ranked in top-ranked position by all the docking programs. Those identified hits target TNF-α dimer and effectively block TNF-α/TNFR interface. The predicted pharmacokinetics and physiological properties of the selected hits revealed that, out of seventeen, seven compounds (4, 5, 10, 11, 13-15) possessed excellent ADMET profile. These seven compounds plus three more molecules (7, 8 and 9) were chosen for molecular dynamics simulation studies to probe into ligand-induced structural and dynamic behavior of TNF-α, followed by ligand-TNF-α binding free energy calculation using MM-PBSA. The MM-PBSA calculations revealed that compounds 4, 5, 7 and 9 possess highest affinity for TNF-α; 8, 11, 13-15 exhibited moderate affinities, while compound 10 showed weaker binding affinity with TNF-α. This study provides valuable insights to design more potent and selective inhibitors of TNF-α, that will help to treat inflammatory disorders.
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Affiliation(s)
- Sobia Ahsan Halim
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al-Mouz, Nizwa 616, Sultanate of Oman;
| | - Almas Gul Sikandari
- Department of Biosciences, COMSATS University Islamabad, Park Road, Chak Shahzad, Islamabad 45600, Pakistan;
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al-Mouz, Nizwa 616, Sultanate of Oman;
| | - Abdul Wadood
- Department of Biochemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa 23200, Pakistan;
| | - Muhammad Qaiser Fatmi
- Department of Biosciences, COMSATS University Islamabad, Park Road, Chak Shahzad, Islamabad 45600, Pakistan;
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str.2, D-06120 Halle (Saale), Germany;
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al-Mouz, Nizwa 616, Sultanate of Oman;
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208
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Figus FA, Piga M, Azzolin I, McConnell R, Iagnocco A. Rheumatoid arthritis: Extra-articular manifestations and comorbidities. Autoimmun Rev 2021; 20:102776. [PMID: 33609792 DOI: 10.1016/j.autrev.2021.102776] [Citation(s) in RCA: 144] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 12/27/2020] [Indexed: 12/20/2022]
Abstract
Although synovitis is the pathological hallmark of rheumatoid arthritis (RA), many extra-articular manifestations (EMs) and comorbidities likely occur due to the complex, chronic, inflammatory, and autoimmune features of RA. Cardiovascular (CV) disease is the most common cause of death in patients with RA. Compared to the general population, patients with RA have twice the risk of myocardial infarction and up to 50% increased CV mortality risk. Severe and prolonged disease activity, genetics, and inflammation (e.g. CRP, ACPA, cytokines, matrix-degrading enzymes) play important roles in CV disease and atheroscleroticdamage. The second major cause of death in patients with RA is respiratory disease, which occurs in 30-40% of patients. RA may affect the lung interstitium, airways, and pleurae, while pulmonary vascular involvement is less frequent. Central and peripheral nervous system involvement is usually due to small vessel vasculitis, joint damage, or drug toxicity. There is also evidence that microvascular cerebral damage caused by systemic inflammation is associated with the development of Alzheimer's disease and vascular dementia. Some observational studies have hinted how Disease Modified Anti-Rheumatic Drugs and biologics could reduce the incidence of dementia. Primary gastrointestinal and renal involvements are rare and often relate to drug therapy. To minimize morbidity and mortality, physicians must manage RA disease activity (treat-to-target) and monitor risk factors and concomitant conditions (e.g. smoking cessation; weight regulation; monitoring blood pressure, lipids, thyroid hormone, folic acid and homocysteine; screening for depression, anxiety, atlantoaxial instability, and atherosclerosis). This article aims to provide an overview of the most prevalent and important EMs and comorbidities associated with RA.
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Affiliation(s)
- Fabiana Assunta Figus
- Academic Rheumatology Centre, MFRU and Dipartimento Scienze Cliniche e Biologiche, Università degli Studi di Torino, Torino, Italy
| | - Matteo Piga
- Rheumatology Unit, University Clinic and AOU of Cagliari, Monserrato, Italy
| | - Irene Azzolin
- Academic Rheumatology Centre, MFRU and Dipartimento Scienze Cliniche e Biologiche, Università degli Studi di Torino, Torino, Italy
| | | | - Annamaria Iagnocco
- Academic Rheumatology Centre, MFRU and Dipartimento Scienze Cliniche e Biologiche, Università degli Studi di Torino, Torino, Italy.
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209
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Plasma osteopontin as a biomarker of Alzheimer's disease and vascular cognitive impairment. Sci Rep 2021; 11:4010. [PMID: 33597603 PMCID: PMC7889621 DOI: 10.1038/s41598-021-83601-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/21/2021] [Indexed: 12/22/2022] Open
Abstract
Cerebrovascular disease (CeVD) and neurodegenerative dementia such as Alzheimer’s disease (AD) are frequently associated comorbidities in the elderly, sharing common risk factors and pathophysiological mechanisms including neuroinflammation. Osteopontin (OPN) is an inflammatory marker found upregulated in vascular diseases as well as in AD. However, its involvement in vascular dementia (VaD) and pre-dementia stages, namely cognitive impairment no dementia (CIND), both of which fall under the spectrum of vascular cognitive impairment (VCI), has yet to be examined. Its correlations with inflammatory cytokines in cognitive impairment also await investigation. 80 subjects with no cognitive impairment (NCI), 160 with CIND and 144 with dementia were included in a cross-sectional study on a Singapore-based memory clinic cohort. All subjects underwent comprehensive clinical, neuropsychological and brain neuroimaging assessments, together with clinical diagnoses based on established criteria. Blood samples were collected and OPN as well as inflammatory cytokines interleukin (IL)-6, IL-8 and tumor necrosis factor (TNF) were measured using immunoassays. Multivariate regression analyses showed significant associations between increased OPN and VCI groups, namely CIND with CeVD, AD with CeVD and VaD. Interestingly, higher OPN was also significantly associated with AD even in the absence of CeVD. We further showed that increased OPN significantly associated with neuroimaging markers of CeVD and neurodegeneration, including cortical infarcts, lacunes, white matter hyperintensities and brain atrophy. OPN also correlated with elevated levels of IL-6, IL-8 and TNF. Our findings suggest that OPN may play a role in both VCI and neurodegenerative dementias. Further longitudinal analyses are needed to assess the prognostic utility of OPN in disease prediction and monitoring.
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Personalized Medicine Using Neuroimmunological Biomarkers in Depressive Disorders. J Pers Med 2021; 11:jpm11020114. [PMID: 33578686 PMCID: PMC7916349 DOI: 10.3390/jpm11020114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/08/2021] [Accepted: 02/08/2021] [Indexed: 02/07/2023] Open
Abstract
Major depressive disorder (MDD) is associated with increased suicidal risk and reduced productivity at work. Neuroimmunology, the study of the immune system and nervous system, provides further insight into the pathogenesis and outcome of MDD. Cytokines are the main modulators of neuroimmunology, and their levels are somewhat entangled in depressive disorders as they affect depressive symptoms and are affected by antidepressant treatment. The use of cytokine-derived medication as a treatment option for MDD is currently a topic of interest. Although not very promising, cytokines are also considered as possible prognostic or diagnostic markers for depression. The machine learning approach is a powerful tool for pattern recognition and has been used in psychiatry for finding useful patterns in data that have translational meaning and can be incorporated in daily clinical practice. This review focuses on the current knowledge of neuroimmunology and depression and the possible use of machine learning to widen our understanding of the topic.
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211
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Carranza-Naval MJ, Vargas-Soria M, Hierro-Bujalance C, Baena-Nieto G, Garcia-Alloza M, Infante-Garcia C, del Marco A. Alzheimer's Disease and Diabetes: Role of Diet, Microbiota and Inflammation in Preclinical Models. Biomolecules 2021; 11:biom11020262. [PMID: 33578998 PMCID: PMC7916805 DOI: 10.3390/biom11020262] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 02/05/2021] [Accepted: 02/05/2021] [Indexed: 02/06/2023] Open
Abstract
Alzheimer's disease (AD) is the most common cause of dementia. Epidemiological studies show the association between AD and type 2 diabetes (T2DM), although the mechanisms are not fully understood. Dietary habits and lifestyle, that are risk factors in both diseases, strongly modulate gut microbiota composition. Also, the brain-gut axis plays a relevant role in AD, diabetes and inflammation, through products of bacterial metabolism, like short-chain fatty acids. We provide a comprehensive review of current literature on the relation between dysbiosis, altered inflammatory cytokines profile and microglia in preclinical models of AD, T2DM and models that reproduce both diseases as commonly observed in the clinic. Increased proinflammatory cytokines, such as IL-1β and TNF-α, are widely detected. Microbiome analysis shows alterations in Actinobacteria, Bacteroidetes or Firmicutes phyla, among others. Altered α- and β-diversity is observed in mice depending on genotype, gender and age; therefore, alterations in bacteria taxa highly depend on the models and approaches. We also review the use of pre- and probiotic supplements, that by favoring a healthy microbiome ameliorate AD and T2DM pathologies. Whereas extensive studies have been carried out, further research would be necessary to fully understand the relation between diet, microbiome and inflammation in AD and T2DM.
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Affiliation(s)
- Maria Jose Carranza-Naval
- Division of Physiology, School of Medicine, Universidad de Cadiz, 11003 Cadiz, Spain; (M.J.C.-N.); (M.V.-S.); (C.H.-B.); (M.G.-A.)
- Instituto de Investigacion e Innovacion en Ciencias Biomedicas de la Provincia de Cadiz (INIBICA), 11009 Cadiz, Spain;
- Salus Infirmorum, Universidad de Cadiz, 11005 Cadiz, Spain
| | - Maria Vargas-Soria
- Division of Physiology, School of Medicine, Universidad de Cadiz, 11003 Cadiz, Spain; (M.J.C.-N.); (M.V.-S.); (C.H.-B.); (M.G.-A.)
- Instituto de Investigacion e Innovacion en Ciencias Biomedicas de la Provincia de Cadiz (INIBICA), 11009 Cadiz, Spain;
| | - Carmen Hierro-Bujalance
- Division of Physiology, School of Medicine, Universidad de Cadiz, 11003 Cadiz, Spain; (M.J.C.-N.); (M.V.-S.); (C.H.-B.); (M.G.-A.)
- Instituto de Investigacion e Innovacion en Ciencias Biomedicas de la Provincia de Cadiz (INIBICA), 11009 Cadiz, Spain;
| | - Gloria Baena-Nieto
- Instituto de Investigacion e Innovacion en Ciencias Biomedicas de la Provincia de Cadiz (INIBICA), 11009 Cadiz, Spain;
- Department of Endocrinology, Jerez Hospital, Jerez de la Frontera, 11407 Cadiz, Spain
| | - Monica Garcia-Alloza
- Division of Physiology, School of Medicine, Universidad de Cadiz, 11003 Cadiz, Spain; (M.J.C.-N.); (M.V.-S.); (C.H.-B.); (M.G.-A.)
- Instituto de Investigacion e Innovacion en Ciencias Biomedicas de la Provincia de Cadiz (INIBICA), 11009 Cadiz, Spain;
| | - Carmen Infante-Garcia
- Division of Physiology, School of Medicine, Universidad de Cadiz, 11003 Cadiz, Spain; (M.J.C.-N.); (M.V.-S.); (C.H.-B.); (M.G.-A.)
- Instituto de Investigacion e Innovacion en Ciencias Biomedicas de la Provincia de Cadiz (INIBICA), 11009 Cadiz, Spain;
- Correspondence: (C.I.-G.); (A.d.M.)
| | - Angel del Marco
- Division of Physiology, School of Medicine, Universidad de Cadiz, 11003 Cadiz, Spain; (M.J.C.-N.); (M.V.-S.); (C.H.-B.); (M.G.-A.)
- Instituto de Investigacion e Innovacion en Ciencias Biomedicas de la Provincia de Cadiz (INIBICA), 11009 Cadiz, Spain;
- Correspondence: (C.I.-G.); (A.d.M.)
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Abstract
The history of Alzheimer's disease (AD) started in 1907, but we needed to wait until the end of the century to identify the components of pathological hallmarks and genetic subtypes and to formulate the first pathogenic hypothesis. Thanks to biomarkers and new technologies, the concept of AD then rapidly changed from a static view of an amnestic dementia of the presenium to a biological entity that could be clinically manifested as normal cognition or dementia of different types. What is clearly emerging from studies is that AD is heterogeneous in each aspect, such as amyloid composition, tau distribution, relation between amyloid and tau, clinical symptoms, and genetic background, and thus it is probably impossible to explain AD with a single pathological process. The scientific approach to AD suffers from chronological mismatches between clinical, pathological, and technological data, causing difficulty in conceiving diagnostic gold standards and in creating models for drug discovery and screening. A recent mathematical computer-based approach offers the opportunity to study AD in real life and to provide a new point of view and the final missing pieces of the AD puzzle.
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Affiliation(s)
- Camilla Ferrari
- Department of Neuroscience, Psychology, Drug Research, and Child Health (NEUROFARBA), University of Florence, Florence, Italy
| | - Sandro Sorbi
- Department of Neuroscience, Psychology, Drug Research, and Child Health (NEUROFARBA), University of Florence, Florence, Italy.,IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy
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213
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Moniruzzaman M, Kadota A, Akash MS, Pruitt PJ, Miura K, Albin R, Dodge HH. Effects of physical activities on dementia-related biomarkers: A systematic review of randomized controlled trials. ALZHEIMER'S & DEMENTIA (NEW YORK, N. Y.) 2021; 6:e12109. [PMID: 33521235 PMCID: PMC7816814 DOI: 10.1002/trc2.12109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/01/2020] [Indexed: 11/12/2022]
Abstract
INTRODUCTION Physical activities (PA) may lead to improved cognition in mild cognitive impairment (MCI), Alzheimer's disease (AD), and dementia. The mechanisms mediating potential PA effects are unknown. Assessment of PA effects on relevant biomarkers may provide insights into mechanisms underlying potential PA effects on cognition. METHODS We systematically reviewed randomized controlled trials (RCTs) that studied PA effects on biomarkers in MCI, AD, and dementia populations. We examined whether biological mechanisms were hypothesized to explain associations among PA, biomarkers, and cognitive functions. We used the PubMed database and searched for RCTs with PA until October 31, 2019. RESULTS Of 653 studies examining changes in biomarkers in PA trials, 18 studies met inclusion criteria for the present review. Some studies found favorable effects of PA on neurotrophic and inflammatory biomarkers. AD pathological markers were rarely investigated, with inconclusive results. Most studies were relatively small in sample size, of limited duration, and not all studies compared the changes in biomarkers between the control and experimental groups. DISCUSSION There is only limited use of potentially informative biomarkers in PA trials for MCI, AD, and dementia. Most studies did not examine the role of biomarkers to study associations between PA and cognitive functions in their analyses. Several potential biomarkers remain uninvestigated. Careful use of biomarkers may clarify mechanisms underlying PA effects on cognition. Our review serves as a useful resource for developing future PA RCTs aimed at improving cognitive functions in MCI, AD, and dementias.
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Affiliation(s)
- Mohammad Moniruzzaman
- Center for Epidemiologic Research in Asia (CERA)Shiga University of Medical ScienceOtsuJapan
- Department of Public HealthShiga University of Medical ScienceOtsuJapan
| | - Aya Kadota
- Center for Epidemiologic Research in Asia (CERA)Shiga University of Medical ScienceOtsuJapan
- Department of Public HealthShiga University of Medical ScienceOtsuJapan
| | | | - Patrick J Pruitt
- Institute of Gerontology, Wayne State UniversityDetroitMichiganUSA
- Department of NeurologyOregon Health & Science UniversityPortlandOregonUSA
| | - Katsuyuki Miura
- Center for Epidemiologic Research in Asia (CERA)Shiga University of Medical ScienceOtsuJapan
- Department of Public HealthShiga University of Medical ScienceOtsuJapan
| | - Roger Albin
- VAAAHSNeurology Service & GRECCAnn ArborMichiganUSA
- Department of Neurology, Michigan Alzheimer's Disease CenterUniversity of MichiganAnn ArborMichiganUSA
| | - Hiroko H. Dodge
- Center for Epidemiologic Research in Asia (CERA)Shiga University of Medical ScienceOtsuJapan
- Department of NeurologyOregon Health & Science UniversityPortlandOregonUSA
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214
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Effects of Exercise Interventions on Inflammatory Parameters in Acutely Hospitalized Older Patients: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Clin Med 2021; 10:jcm10020290. [PMID: 33466835 PMCID: PMC7830051 DOI: 10.3390/jcm10020290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/11/2022] Open
Abstract
The purpose of this systematic review and meta-analysis was to appraise the acute effects of exercise training on inflammatory parameters in hospitalized older adults. We conducted a systematic review using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Web of Science, Medline and PubMed were searched for studies published until August 2020. The review included all randomized controlled trials (RCTs) that evaluated and compared the effect of exercise versus usual care on inflammatory parameters in acutely hospitalized older adults. Two reviewers independently assessed the studies. The quality of all the included studies was assessed using the DerSimonian-Laird random-effects inverse-variance model. Five studies (275 participants) met the inclusion criteria. The exercise interventions included resistance or multicomponent intervention programs. The results indicate that, compared with usual care, exercise interventions have a positive impact on overall inflammatory parameters, including C-reactive protein (CRP) and insulin-like growth factor-I (IGF-1) (Hedge's g = -0.19, 95% confidence interval [CI] -0.33 to -0.04, p = 0.011, I2 = 0%). However, analyses of individual inflammatory parameters revealed a non-significant trend for reductions in CRP (Hedge's g = -0.20, 95% CI -0.47 to 0.07, p = 0.151, I2 = 31.2%) and IGF-I (Hedge's g = -0.34, 95% CI -0.79 to 0.11, p = 0.138, I2 = 0%). On the basis of this review, we conclude that exercise during acute hospitalization offers a mild improvement in the inflammatory profile over usual care in older patients. Nevertheless, due to limited number of RCTs, our findings must be interpreted with caution and confirmed in future studies.
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215
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Yu CC, Du YJ, Wang SQ, Liu LB, Shen F, Wang L, Lin YF, Kong LH. Experimental Evidence of the Benefits of Acupuncture for Alzheimer's Disease: An Updated Review. Front Neurosci 2021; 14:549772. [PMID: 33408601 PMCID: PMC7779610 DOI: 10.3389/fnins.2020.549772] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 11/18/2020] [Indexed: 12/15/2022] Open
Abstract
As the global population ages, the prevalence of Alzheimer's disease (AD), the most common form of dementia, is also increasing. At present, there are no widely recognized drugs able to ameliorate the cognitive dysfunction caused by AD. The failure of several promising clinical trials in recent years has highlighted the urgent need for novel strategies to both prevent and treat AD. Notably, a growing body of literature supports the efficacy of acupuncture for AD. In this review, we summarize the previously reported mechanisms of acupuncture's beneficial effects in AD, including the ability of acupuncture to modulate Aβ metabolism, tau phosphorylation, neurotransmitters, neurogenesis, synapse and neuron function, autophagy, neuronal apoptosis, neuroinflammation, cerebral glucose metabolism, and brain responses. Taken together, these findings suggest that acupuncture provides therapeutic effects for AD.
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Affiliation(s)
- Chao-Chao Yu
- Department of Tuina, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China.,The Fourth Clinical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Yan-Jun Du
- College of Acupuncture and Orthopedics, Hubei University of Chinese Medicine, Wuhan, China
| | - Shu-Qin Wang
- Department of Tuina, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China.,The Fourth Clinical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Le-Bin Liu
- Department of Rehabilitation Medicine, Hubei Rongjun Hospital, Wuhan, China
| | - Feng Shen
- College of Acupuncture and Orthopedics, Hubei University of Chinese Medicine, Wuhan, China
| | - Li Wang
- College of Acupuncture and Orthopedics, Hubei University of Chinese Medicine, Wuhan, China
| | - Yuan-Fang Lin
- Department of Tuina, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China.,The Fourth Clinical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Li-Hong Kong
- College of Acupuncture and Orthopedics, Hubei University of Chinese Medicine, Wuhan, China
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216
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Metz CN, Pavlov VA. Treating disorders across the lifespan by modulating cholinergic signaling with galantamine. J Neurochem 2021; 158:1359-1380. [PMID: 33219523 PMCID: PMC10049459 DOI: 10.1111/jnc.15243] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 02/06/2023]
Abstract
Advances in understanding the regulatory functions of the nervous system have revealed neural cholinergic signaling as a key regulator of cytokine responses and inflammation. Cholinergic drugs, including the centrally acting acetylcholinesterase inhibitor, galantamine, which are in clinical use for the treatment of Alzheimer's disease and other neurodegenerative and neuropsychiatric disorders, have been rediscovered as anti-inflammatory agents. Here, we provide a timely update on this active research and clinical developments. We summarize the involvement of cholinergic mechanisms and inflammation in the pathobiology of Alzheimer's disease, Parkinson's disease, and schizophrenia, and the effectiveness of galantamine treatment. We also highlight recent findings demonstrating the effects of galantamine in preclinical and clinical settings of numerous conditions and diseases across the lifespan that are characterized by immunological, neurological, and metabolic dysfunction.
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Affiliation(s)
- Christine N Metz
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA.,Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Valentin A Pavlov
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA.,Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
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217
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Parvin P, Parichehreh Y, Mehdi N, Zahra H. Effects of artemisinin and TSP-1-human endometrial-derived stem cells on a streptozocin-induced model of Alzheimer’s disease and diabetes in Wistar rats. Acta Neurobiol Exp (Wars) 2021. [DOI: 10.21307/ane-2021-013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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218
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Ahmed WMS, Helmy NA, Ibrahim MA, Hassan HM, Zaki AR. Premna odorata extract as a protective agent on neurotoxic effect of aluminum: neurochemical, molecular, and histopathological alterations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2146-2157. [PMID: 32870428 DOI: 10.1007/s11356-020-10659-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/26/2020] [Indexed: 05/04/2023]
Abstract
Premna odorata Blanco (Lamiaceae) is an ethnomedicinal plant, where some reports claimed their anti-inflammatory, cytotoxic, and antituberculosis effects, without investigating its role on the brain. Therefore, forty mature male rats were equally divided into 4 groups; the 1st was kept as control. Rats in groups 2 and 4 were orally given P. odorata extract daily at a dose of 500 mg/kg B.W., while those in groups 3 and 4 were daily administrated aluminum chloride "AlCl3" (70 mg/kg B.W.). The treatments extended for 30 successive days. At the end of the experimental period, brain samples were collected for biochemical assay of glutathione reductase (GSH), catalase, malondialdehyde (MDA), and acetylcholinesterase activity (AChE). Besides, monoamines (norepinephrine, dopamine, serotonin), amino acids (glutamine, serine, arginine, taurine and gamma-aminobutyric acid (GABA)), neurotransmitters, DNA damage, cyclooxygenase-2 (COX-2), and tumor necrosis factor (TNF)-α genes were estimated. Moreover, brain samples were obtained for histopathological investigation. Aluminum toxicity resulted in a decline of GSH concentration, elevation of MDA, and AChE activity. Except for GABA which exhibited a significant decrease, there was a marked increase in the measured amino acid and monoamine neurotransmitters. Also, an increase in mRNA expressions of TNF-α and COX-2 was detected. It was noticed that Premna odorata extract reduced the oxidative stress and counteracted the augmentations in AChE caused by AlCl3. Marked improvements in most measured neurotransmitters with downregulation of pro-inflammatory gene expression were recorded in P. odorata + AlCl3 group. Premna odorata restores the altered histopathological feature induced by AlCl3. In conclusion, the present findings clarify that P. odorata extract could be important in improving and treatment of neurodegenerative disorders as it was able to reduce oxidative stress, DNA damage, biochemical alterations, and histopathological changes in rats exposed to AlCl3 toxicity.
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Affiliation(s)
- Walaa M S Ahmed
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni Suef, 62511, Egypt
| | - Nermeen A Helmy
- Department of Physiology, Faculty of Veterinary Medicine, Beni-Suef University, Beni Suef, 62511, Egypt
| | - Marwa A Ibrahim
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
| | - Hossam M Hassan
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Amr R Zaki
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
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219
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Haran JP, McCormick BA. Aging, Frailty, and the Microbiome-How Dysbiosis Influences Human Aging and Disease. Gastroenterology 2021; 160:507-523. [PMID: 33307030 PMCID: PMC7856216 DOI: 10.1053/j.gastro.2020.09.060] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/08/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023]
Abstract
The human gut microbiome is a collection of bacteria, protozoa, fungi, and viruses that coexist in our bodies and are essential in protective, metabolic, and physiologic functions of human health. Gut dysbiosis has traditionally been linked to increased risk of infection, but imbalances within the intestinal microbial community structure that correlate with untoward inflammatory responses are increasingly recognized as being involved in disease processes that affect many organ systems in the body. Furthermore, it is becoming more apparent that the connection between gut dysbiosis and age-related diseases may lie in how the gut microbiome communicates with both the intestinal mucosa and the systemic immune system, given that these networks have a common interconnection to frailty. We therefore discuss recent advances in our understanding of the important role the microbiome plays in aging and how this knowledge opens the door for potential novel therapeutics aimed at shaping a less dysbiotic microbiome to prevent or treat age-related diseases.
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Affiliation(s)
- John P Haran
- Department of Emergency Medicine; Department of Microbiology and Physiological Systems; Center for Microbiome Research, University of Massachusetts Medical School, Worcester, Massachusetts.
| | - Beth A McCormick
- Department of Microbiology and Physiological Systems; Center for Microbiome Research, University of Massachusetts Medical School, Worcester, Massachusetts
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220
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Bettcher BM, Tansey MG, Dorothée G, Heneka MT. Peripheral and central immune system crosstalk in Alzheimer disease - a research prospectus. Nat Rev Neurol 2021; 17:689-701. [PMID: 34522039 PMCID: PMC8439173 DOI: 10.1038/s41582-021-00549-x] [Citation(s) in RCA: 161] [Impact Index Per Article: 53.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2021] [Indexed: 02/08/2023]
Abstract
Dysregulation of the immune system is a cardinal feature of Alzheimer disease (AD), and a considerable body of evidence indicates pathological alterations in central and peripheral immune responses that change over time. Considering AD as a systemic immune process raises important questions about how communication between the peripheral and central compartments occurs and whether this crosstalk represents a therapeutic target. We established a whitepaper workgroup to delineate the current status of the field and to outline a research prospectus for advancing our understanding of peripheral-central immune crosstalk in AD. To guide the prospectus, we begin with an overview of seminal clinical observations that suggest a role for peripheral immune dysregulation and peripheral-central immune communication in AD, followed by formative animal data that provide insights into possible mechanisms for these clinical findings. We then present a roadmap that defines important next steps needed to overcome conceptual and methodological challenges, opportunities for future interdisciplinary research, and suggestions for translating promising mechanistic studies into therapeutic interventions.
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Affiliation(s)
- Brianne M. Bettcher
- grid.430503.10000 0001 0703 675XBehavioral Neurology Section, Department of Neurology, University of Colorado Alzheimer’s and Cognition Center, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Malú G. Tansey
- grid.15276.370000 0004 1936 8091Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL USA
| | - Guillaume Dorothée
- grid.412370.30000 0004 1937 1100Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine, CRSA, Team “Immune System and Neuroinflammation”, Hôpital Saint-Antoine, Paris, France
| | - Michael T. Heneka
- grid.15090.3d0000 0000 8786 803XDepartment of Neurodegenerative Diseases & Geropsychiatry/Neurology, University of Bonn Medical Center, Bonn, Germany ,grid.168645.80000 0001 0742 0364Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA USA
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221
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Nowroozpoor A, Gutterman D, Safdar B. Is microvascular dysfunction a systemic disorder with common biomarkers found in the heart, brain, and kidneys? - A scoping review. Microvasc Res 2020; 134:104123. [PMID: 33333140 DOI: 10.1016/j.mvr.2020.104123] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/09/2020] [Accepted: 12/12/2020] [Indexed: 02/07/2023]
Abstract
Although microvascular dysfunction (MVD) has been well characterized in individual organs as different disease entities, clinical evidence is mounting in support of an underlying systemic process. To address this hypothesis, we systematically searched PubMed and Medline for studies in adults published between 2014 and 2019 that measured blood biomarkers of MVD in three vital organs i.e. brain, heart, and the kidney. Of the 9706 unique articles 321 met the criteria, reporting 49 biomarkers of which 16 were common to the three organs. Endothelial dysfunction, inflammation including reactive oxidation, immune activation, and coagulation were the commonly recognized pathways. Triglyceride, C-reactive protein, Cystatin C, homocysteine, uric acid, IL-6, NT-proBNP, thrombomodulin, von Willebrand Factor, and uric acid were increased in MVD of all three organs. In contrast, vitamin D was decreased. Adiponectin, asymmetric dimethylarginine, total cholesterol, high-density and low-density cholesterol were found to be variably increased or decreased in studies. We review the pathways underlying MVD in the three organs and summarize evidence supporting its systemic nature. This scoping review informs clinicians and researchers in the multi-system manifestation of MVD. Future work should focus on longitudinal investigations to evaluate the multi-system involvement of this disease.
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Affiliation(s)
- Armin Nowroozpoor
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, United States
| | - David Gutterman
- Department of Internal Medicine, Section of Cardiology, Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Basmah Safdar
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, United States.
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222
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A Rational Insight into the Effect of Dimethyl Sulfoxide on TNF-α Activity. Int J Mol Sci 2020; 21:ijms21249450. [PMID: 33322533 PMCID: PMC7763846 DOI: 10.3390/ijms21249450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022] Open
Abstract
Direct inhibition of tumor necrosis factor-alpha (TNF-α) action is considered a promising way to prevent or treat TNF-α-associated diseases. The trimeric form of TNF-α binds to its receptor (TNFR) and activates the downstream signaling pathway. The interaction of TNF-α with molecular-grade dimethyl sulfoxide (DMSO) in an equal volumetric ratio renders TNF-α inert, in this state, TNF-α fails to activate TNFR. Here, we aimed to examine the inhibition of TNF-α function by various concentrations of DMSO. Its higher concentration led to stronger attenuation of TNF-α-induced cytokine secretion by fibroblasts, and of their death. We found that this inhibition was mediated by a perturbation in the formation of the functional TNF-α trimer. Molecular dynamics simulations revealed a transient interaction between DMSO molecules and the central hydrophobic cavity of the TNF-α homodimer, indicating that a brief interaction of DMSO with the TNF-α homodimer may disrupt the formation of the functional homotrimer. We also found that the sensitizing effect of actinomycin D on TNF-α-induced cell death depends upon the timing of these treatments and on the cell type. This study will help to select an appropriate concentration of DMSO as a working solvent for the screening of water-insoluble TNF-α inhibitors.
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223
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Culibrk RA, Hahn MS. The Role of Chronic Inflammatory Bone and Joint Disorders in the Pathogenesis and Progression of Alzheimer's Disease. Front Aging Neurosci 2020; 12:583884. [PMID: 33364931 PMCID: PMC7750365 DOI: 10.3389/fnagi.2020.583884] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 11/06/2020] [Indexed: 12/12/2022] Open
Abstract
Late-onset Alzheimer's Disease (LOAD) is a devastating neurodegenerative disorder that causes significant cognitive debilitation in tens of millions of patients worldwide. Throughout disease progression, abnormal secretase activity results in the aberrant cleavage and subsequent aggregation of neurotoxic Aβ plaques in the cerebral extracellular space and hyperphosphorylation and destabilization of structural tau proteins surrounding neuronal microtubules. Both pathologies ultimately incite the propagation of a disease-associated subset of microglia-the principle immune cells of the brain-characterized by preferentially pro-inflammatory cytokine secretion and inhibited AD substrate uptake capacity, which further contribute to neuronal degeneration. For decades, chronic neuroinflammation has been identified as one of the cardinal pathophysiological driving features of AD; however, despite a number of works postulating the underlying mechanisms of inflammation-mediated neurodegeneration, its pathogenesis and relation to the inception of cognitive impairment remain obscure. Moreover, the limited clinical success of treatments targeting specific pathological features in the central nervous system (CNS) illustrates the need to investigate alternative, more holistic approaches for ameliorating AD outcomes. Accumulating evidence suggests significant interplay between peripheral immune activity and blood-brain barrier permeability, microglial activation and proliferation, and AD-related cognitive decline. In this work, we review a narrow but significant subset of chronic peripheral inflammatory conditions, describe how these pathologies are associated with the preponderance of neuroinflammation, and posit that we may exploit peripheral immune processes to design interventional, preventative therapies for LOAD. We then provide a comprehensive overview of notable treatment paradigms that have demonstrated considerable merit toward treating these disorders.
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Affiliation(s)
| | - Mariah S. Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
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224
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Olawande TI, Ajayi MP, Amoo EO, Olawole-Isaac A. Treatment pathways of Alzheimer in Nigeria. Heliyon 2020; 6:e05724. [PMID: 33344795 PMCID: PMC7736722 DOI: 10.1016/j.heliyon.2020.e05724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 11/22/2020] [Accepted: 12/10/2020] [Indexed: 11/21/2022] Open
Abstract
Alzheimer poses lots of challenges in Low and Middle Income Countries, especially in Nigeria. Globally, the causes of Alzheimer are poorly understood. Cultural factors affect the preference of mental health treatment for treating people living with Alzheimer's disease (PLWA However, Alzheimer's and its gender differentials have been given little consideration in particular. Twenty-four in-depth study was conducted with caregivers and family members/relatives of people living with Alzheimer's (PLWA) residing in the study area. 52.2 percent of respondents were female out of the total while 45.8 percent were male. For male respondents, 40.4%; 49.4 %; 49.2%; 35 % and 28.3% indicated spiritual preference of mental health counseling; traditional; medical practitioner; both traditional and spiritual and psychiatrist respectively. On the other hand, 59.6%; 50.6%; 50.8%; 65% and 70.7% of female respondents indicated spiritual; traditional; medical practitioner; both traditional and spiritual and psychiatrist respectively. This research found that gender disparities primarily affected the mental health intervention care pathways. The availability of mental health resources to support adult mental health were key factors which could influence mental health status.
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Affiliation(s)
| | | | - Emmanuel O. Amoo
- Department of Demography and Social Statistics, Covenant University, Ota, Nigeria
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225
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Feng YS, Tan ZX, Wu LY, Dong F, Zhang F. The involvement of NLRP3 inflammasome in the treatment of Alzheimer's disease. Ageing Res Rev 2020; 64:101192. [PMID: 33059089 DOI: 10.1016/j.arr.2020.101192] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/04/2020] [Accepted: 10/05/2020] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases, and it is characterised by progressive deterioration in cognitive and memory abilities, which can severely influence the elderly population's daily living abilities. Although researchers have made great efforts in the field of AD, there are still no well-established strategies to prevent and treat this disease. Therefore, better clarification of the molecular mechanisms associated with the onset and progression of AD is critical to provide a theoretical basis for the establishment of novel preventive and therapeutic strategies. Currently, it is generally believed that neuroinflammation plays a key role in the pathogenesis of AD. Inflammasome, a multiprotein complex, is involved in the innate immune system, and it can mediate inflammatory responses and pyroptosis, which lead to neurodegeneration. Among the various types of inflammasomes, the NLRP3 inflammasome is the most characterised in neurodegenerative diseases, especially in AD. The activation of the NLRP3 inflammasome causes the generation of caspase-1-mediated interleukin (IL)-1β and IL-18 in microglia cells, where neuroinflammation is involved in the development and progression of AD. Thus, the NLRP3 inflammasome is likely to be a crucial therapeutic molecular target for AD via regulating neuroinflammation. In this review, we summarise the current knowledge on the role and regulatory mechanisms of the NLRP3 inflammasome in the pathogenic mechanisms of AD. We also focus on a series of potential therapeutic treatments targeting NLRP3 inflammasome for AD. Further clarification of the regulatory mechanisms of the NLRP3 inflammasome in AD may provide more useful clues to develop novel AD treatment strategies.
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226
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Wei ZX, Chen L, Zhang JJ, Cheng Y. Aberrations in peripheral inflammatory cytokine levels in substance use disorders: a meta-analysis of 74 studies. Addiction 2020; 115:2257-2267. [PMID: 32533781 DOI: 10.1111/add.15160] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/02/2020] [Accepted: 06/10/2020] [Indexed: 02/06/2023]
Abstract
AIMS To characterize the peripheral inflammatory cytokine profile in people with substance use disorders (SUDs). DESIGN Systematic review and meta-analysis. SETTING Clinical studies that evaluated peripheral blood inflammatory cytokine levels in patients with SUDs and healthy controls PARTICIPANTS: SUD patients and healthy controls. MEASUREMENTS PubMed and Web of Science were systematically searched for relevant studies. Two investigators independently selected studies and extracted data. A total of 77 articles were included in the meta-analysis, containing 5649 patients with SUDs and 4643 healthy controls. Data were pooled using a random-effects model by the Comprehensive Meta-Analysis version 2 software. FINDINGS Concentrations of interleukin (IL)-6) in 32 studies, tumor necrosis factor (TNF)-α in 28 studies, IL-10 in 20 studies, IL-8 in 17 studies, C-reactive protein in 14 studies, IL-4 in 10 studies, IL-12 in seven studies, monocyte chemoattractant protein (MCP)-1 in 6 studies, TNF-receptor 2 (TNF-R2) in four studies and granulocyte-macrophage colony-stimulating factor (GM-CSF) in three studies were significantly higher in patients with SUDs compared with healthy controls, while concentrations of leptin in 14 studies were significantly lower in patients with SUDs compared with healthy controls. The findings were inconclusive for the associations between interferon-γ, IL-1β, IL-2, IL-1 receptor antagonist (IL-1RA), transforming growth factor (TGF)-β1, G-CSF, C-C motif chemokine 11, TGF-α and SUDs. CONCLUSIONS People with substance use disorders (SUDs) appear to have higher peripheral concentrations of IL-4, IL-6, IL-8, IL-10, IL-12, TNF-α, C-reactive protein, MCP-1, TNF-R2 and GM-CSF and lower peripheral concentrations of leptin than people without SUDs. This strengthens the view that SUD is accompanied by an inflammatory response.
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Affiliation(s)
- Ze-Xu Wei
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Lei Chen
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Jian-Jun Zhang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Yong Cheng
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
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227
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Rivero-Segura NA, Bello-Chavolla OY, Barrera-Vázquez OS, Gutierrez-Robledo LM, Gomez-Verjan JC. Promising biomarkers of human aging: In search of a multi-omics panel to understand the aging process from a multidimensional perspective. Ageing Res Rev 2020; 64:101164. [PMID: 32977058 DOI: 10.1016/j.arr.2020.101164] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/18/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022]
Abstract
The aging process has been linked to the occurrence of chronic diseases and functional impairments, including cancer, sarcopenia, frailty, metabolic, cardiovascular, and neurodegenerative diseases. Nonetheless, aging is highly variable and heterogeneous and represents a challenge for its characterization. In this sense, intrinsic capacity (IC) stands as a novel perspective by the World Health Organization, which integrates the individual wellbeing, environment, and risk factors to understand aging. However, there is a lack of quantitative and qualitative attributes to define it objectively. Therefore, in this review we attempt to summarize the most relevant and promising biomarkers described in clinical studies at date over different molecular levels, including epigenomics, transcriptomics, proteomics, metabolomics, and the microbiome. To aid gerontologists, geriatricians, and biomedical researchers to understand the aging process through the IC. Aging biomarkers reflect the physiological state of individuals and the underlying mechanisms related to homeostatic changes throughout an individual lifespan; they demonstrated that aging could be measured independently of time (that may explain its heterogeneity) and to be helpful to predict age-related syndromes and mortality. In summary, we highlight the areas of opportunity and gaps of knowledge that must be addressed to fully integrate biomedical findings into clinically useful tools and interventions.
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Affiliation(s)
| | - O Y Bello-Chavolla
- Dirección de Investigación, Instituto Nacional de Geriatría, Mexico; Department of Physiology, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - O S Barrera-Vázquez
- Departamento de Famacología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | - J C Gomez-Verjan
- Dirección de Investigación, Instituto Nacional de Geriatría, Mexico.
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228
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Tarawneh R. Biomarkers: Our Path Towards a Cure for Alzheimer Disease. Biomark Insights 2020; 15:1177271920976367. [PMID: 33293784 PMCID: PMC7705771 DOI: 10.1177/1177271920976367] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 12/12/2022] Open
Abstract
Over the last decade, biomarkers have significantly improved our understanding of
the pathophysiology of Alzheimer disease (AD) and provided valuable tools to
examine different disease mechanisms and their progression over time. While
several markers of amyloid, tau, neuronal, synaptic, and axonal injury,
inflammation, and immune dysregulation in AD have been identified, there is a
relative paucity of biomarkers which reflect other disease mechanisms such as
oxidative stress, mitochondrial injury, vascular or endothelial injury, and
calcium-mediated excitotoxicity. Importantly, there is an urgent need to
standardize methods for biomarker assessments across different centers, and to
identify dynamic biomarkers which can monitor disease progression over time
and/or response to potential disease-modifying treatments. The updated research
framework for AD, proposed by the National Institute of Aging- Alzheimer’s
Association (NIA-AA) Work Group, emphasizes the importance of incorporating
biomarkers in AD research and defines AD as a biological construct consisting of
amyloid, tau, and neurodegeneration which spans pre-symptomatic and symptomatic
stages. As results of clinical trials of AD therapeutics have been
disappointing, it has become increasingly clear that the success of future AD
trials will require the incorporation of biomarkers in participant selection,
prognostication, monitoring disease progression, and assessing response to
treatments. We here review the current state of fluid AD biomarkers, and discuss
the advantages and limitations of the updated NIA-AA research framework.
Importantly, the integration of biomarker data with clinical, cognitive, and
imaging domains through a systems biology approach will be essential to
adequately capture the molecular, genetic, and pathological heterogeneity of AD
and its spatiotemporal evolution over time.
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Affiliation(s)
- Rawan Tarawneh
- Department of Neurology, The Ohio State University, Columbus, OH, USA
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229
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Tortelli R, Zecca C, Piccininni M, Benmahamed S, Dell'Abate MT, Barulli MR, Capozzo R, Battista P, Logroscino G. Plasma Inflammatory Cytokines Are Elevated in ALS. Front Neurol 2020; 11:552295. [PMID: 33281700 PMCID: PMC7691268 DOI: 10.3389/fneur.2020.552295] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 09/28/2020] [Indexed: 12/12/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease which leads to death in a median time of 2–3 years. Inflammation has been claimed important to the ALS pathogenesis, but its role is still not well-characterized. In the present study, a panel of five cytokines (IL-2, IL-6, IL-10, IFN-gamma, and TNF-alpha) measured in plasma has been investigated in ALS. These biomarkers of inflammation were measured in a population-based cohort of 79 patients with ALS and 79 age- and sex-matched healthy controls using the Bio-Plex technology (Bio-Rad). All the five cytokines were significantly increased in plasma samples of patients compared with controls (p < 0.0001), with IL-6 having the highest median concentration (10.11 pg/ml) in the ALS group. Furthermore, IL-6 was the plasma cytokine with the highest discrimination ability between patients and controls according to the receiver operating characteristic analysis (area under the curve = 0.93). At a cut-off point of 5.71 pg/ml, it was able to classify patients and controls with 91% of sensitivity and 87% of specificity. In the ALS group, plasma IL-6 concentration correlated with demographic (age: rs = 0.25, p = 0.025) and clinical (revised ALS Functional Rating Scale at evaluation: rs = −0.32, p = 0.007; Manual Muscle Testing: rs = −0.33, p = 0.004; progression: rs = 0.29, p = 0.0395) parameters. In line with previous studies, our results confirm that inflammatory cytokines are elevated in ALS, supporting a possible role of inflammation in disease mechanism and progression. However, the precise role of inflammation in ALS needs to be further investigated on larger samples and with more mechanistic studies.
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Affiliation(s)
- Rosanna Tortelli
- Center for Neurodegenerative Diseases and the Aging Brain, University of Bari "Aldo Moro" - A.O. Pia Fond "Card. G. Panico" Hospital, Lecce, Italy.,UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Chiara Zecca
- Center for Neurodegenerative Diseases and the Aging Brain, University of Bari "Aldo Moro" - A.O. Pia Fond "Card. G. Panico" Hospital, Lecce, Italy
| | - Marco Piccininni
- Center for Neurodegenerative Diseases and the Aging Brain, University of Bari "Aldo Moro" - A.O. Pia Fond "Card. G. Panico" Hospital, Lecce, Italy.,Institute of Public Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Sara Benmahamed
- UMR_S 1094, Tropical Neuroepidemiology, Institute of Neuroepidemiology and Tropical Neurology, University Limoges, CNRS FR 3503 GEIST, Limoges, France
| | - Maria Teresa Dell'Abate
- Center for Neurodegenerative Diseases and the Aging Brain, University of Bari "Aldo Moro" - A.O. Pia Fond "Card. G. Panico" Hospital, Lecce, Italy
| | - Maria Rosaria Barulli
- Center for Neurodegenerative Diseases and the Aging Brain, University of Bari "Aldo Moro" - A.O. Pia Fond "Card. G. Panico" Hospital, Lecce, Italy
| | - Rosa Capozzo
- Center for Neurodegenerative Diseases and the Aging Brain, University of Bari "Aldo Moro" - A.O. Pia Fond "Card. G. Panico" Hospital, Lecce, Italy
| | - Petronilla Battista
- Istituti Clinici Scientifici Maugeri IRCCS, Institute of Bari, Pavia, Italy.,Global Brain Health Institute (GBHI), University of California, San Francisco, San Francisco, CA, United States
| | - Giancarlo Logroscino
- Center for Neurodegenerative Diseases and the Aging Brain, University of Bari "Aldo Moro" - A.O. Pia Fond "Card. G. Panico" Hospital, Lecce, Italy.,Department of Basic Medical Science and Sense Organs, University of Bari "Aldo Moro," Bari, Italy
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230
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Fluid Candidate Biomarkers for Alzheimer's Disease: A Precision Medicine Approach. J Pers Med 2020; 10:jpm10040221. [PMID: 33187336 PMCID: PMC7712586 DOI: 10.3390/jpm10040221] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 12/11/2022] Open
Abstract
A plethora of dynamic pathophysiological mechanisms underpins highly heterogeneous phenotypes in the field of dementia, particularly in Alzheimer's disease (AD). In such a faceted scenario, a biomarker-guided approach, through the implementation of specific fluid biomarkers individually reflecting distinct molecular pathways in the brain, may help establish a proper clinical diagnosis, even in its preclinical stages. Recently, ultrasensitive assays may detect different neurodegenerative mechanisms in blood earlier. ß-amyloid (Aß) peptides, phosphorylated-tau (p-tau), and neurofilament light chain (NFL) measured in blood are gaining momentum as candidate biomarkers for AD. P-tau is currently the more convincing plasma biomarker for the diagnostic workup of AD. The clinical role of plasma Aβ peptides should be better elucidated with further studies that also compare the accuracy of the different ultrasensitive techniques. Blood NFL is promising as a proxy of neurodegeneration process tout court. Protein misfolding amplification assays can accurately detect α-synuclein in cerebrospinal fluid (CSF), thus representing advancement in the pathologic stratification of AD. In CSF, neurogranin and YKL-40 are further candidate biomarkers tracking synaptic disruption and neuroinflammation, which are additional key pathophysiological pathways related to AD genesis. Advanced statistical analysis using clinical scores and biomarker data to bring together individuals with AD from large heterogeneous cohorts into consistent clusters may promote the discovery of pathophysiological causes and detection of tailored treatments.
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231
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Cui X, Zhang F, Zhang H, Huang X, Wang K, Huang T, Yang X, Zou L. Neuroprotective Effect of Optogenetics Varies With Distance From Channelrhodopsin-2 Expression in an Amyloid-β-Injected Mouse Model of Alzheimer's Disease. Front Neurosci 2020; 14:583628. [PMID: 33162881 PMCID: PMC7584457 DOI: 10.3389/fnins.2020.583628] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 09/14/2020] [Indexed: 11/13/2022] Open
Abstract
Background: Alzheimer’s disease (AD) is a progressive neurodegenerative disease that is the most common cause of dementia. Optogenetics uses a combination of genetic engineering and light to activate or inhibit specific neurons in the brain. Objective: The objective of the study was to examine the effect of activation of glutamatergic neurons in the hippocampus of mice injected with Aβ1-42 on memory function and biomarkers of neuroinflammation and neuroprotection in the brain to elucidate the clinical utility of optogenetic neuromodulation in AD. Methods: AAV5–CaMKII–channelrhodopsin-2 (CHR2)–mCherry (Aβ-CHR2 mice) or AAV5—CaMKII–mCherry (Aβ-non-CHR2 mice) was injected into the dentate gyrus (DG) of the bilateral hippocampus of an Aβ1-42-injected mouse model of AD. The novel object recognition test was used to investigate working memory (M1), short-term memory (M2), and long-term memory (M3) after Aβ1-42 injection. Hippocampus tissues were collected for immunohistochemical analysis. Results: Compared to controls, M1 and M2 were significantly higher in Aβ-CHR2 mice, but there was no significant difference in M3; NeuN and synapsin expression were significantly increased in the DG of Aβ-CHR2 mice, but not in CA1, CA3, the subventricular zone (SVZ), or the entorhinal cortex (ENT); GluR2 and IL-10 expressions were significantly increased, and GFAP expression was significantly decreased, in CA1, CA3, the DG, and the SVZ of Aβ-CHR2 mice, but not in the ENT. Conclusion: Activation of glutamatergic neurons by optogenetics in the bilateral DG of an Aβ-injected mouse model of AD improved M1 and M2, but not M3. A single-target optogenetics strategy has spatial limitations; therefore, a multiple targeted optogenetics approach to AD therapy should be explored.
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Affiliation(s)
- Xiaorui Cui
- Department of Neurology, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China.,Department of Neurology, Affiliated Hospital of Xiangnan University, Chenzhou, China
| | - Feng Zhang
- Intensive Care Unit, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Hui Zhang
- Department of Neurology, Shenzhen People's Hospital (First Affiliated Hospital of Southern University of Science and Technology), Second Clinical College, Jinan University, Shenzhen, China
| | - Xi Huang
- Department of Neurology, Shenzhen People's Hospital (First Affiliated Hospital of Southern University of Science and Technology), Second Clinical College, Jinan University, Shenzhen, China
| | - Kewei Wang
- Department of Neurology, Longgang District People's Hospital of Shenzhen, Shenzhen, China
| | - Ting Huang
- Department of Cerebrovascular Disease, People's Hospital of Yuxi, The Sixth Affiliated Hospital of Kunming Medical University, Yuxi, China
| | - Xifei Yang
- Key Laboratory of Modern Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Liangyu Zou
- Department of Neurology, Shenzhen People's Hospital (First Affiliated Hospital of Southern University of Science and Technology), Second Clinical College, Jinan University, Shenzhen, China
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232
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Natunen T, Martiskainen H, Marttinen M, Gabbouj S, Koivisto H, Kemppainen S, Kaipainen S, Takalo M, Svobodová H, Leppänen L, Kemiläinen B, Ryhänen S, Kuulasmaa T, Rahunen E, Juutinen S, Mäkinen P, Miettinen P, Rauramaa T, Pihlajamäki J, Haapasalo A, Leinonen V, Tanila H, Hiltunen M. Diabetic phenotype in mouse and humans reduces the number of microglia around β-amyloid plaques. Mol Neurodegener 2020; 15:66. [PMID: 33168021 PMCID: PMC7653710 DOI: 10.1186/s13024-020-00415-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 10/26/2020] [Indexed: 02/08/2023] Open
Abstract
Background Alzheimer’s disease (AD) is the most common neurodegenerative disease and type 2 diabetes (T2D) plays an important role in conferring the risk for AD. Although AD and T2D share common features, the common molecular mechanisms underlying these two diseases remain elusive. Methods Mice with different AD- and/or tauopathy-linked genetic backgrounds (APPswe/PS1dE9, Tau P301L and APPswe/PS1dE9/Tau P301L) were fed for 6 months with standard diet or typical Western diet (TWD). After behavioral and metabolic assessments of the mice, the effects of TWD on global gene expression as well as dystrophic neurite and microglia pathology were elucidated. Consequently, mechanistic aspects related to autophagy, cell survival, phagocytic uptake as well as Trem2/Dap12 signaling pathway, were assessed in microglia upon modulation of PI3K-Akt signaling. To evaluate whether the mouse model-derived results translate to human patients, the effects of diabetic phenotype on microglial pathology were assessed in cortical biopsies of idiopathic normal pressure hydrocephalus (iNPH) patients encompassing β-amyloid pathology. Results TWD led to obesity and diabetic phenotype in all mice regardless of the genetic background. TWD also exacerbated memory and learning impairment in APPswe/PS1dE9 and Tau P301L mice. Gene co-expression network analysis revealed impaired microglial responses to AD-related pathologies in APPswe/PS1dE9 and APPswe/PS1dE9/Tau P301L mice upon TWD, pointing specifically towards aberrant microglial functionality due to altered downstream signaling of Trem2 and PI3K-Akt. Accordingly, fewer microglia, which did not show morphological changes, and increased number of dystrophic neurites around β-amyloid plaques were discovered in the hippocampus of TWD mice. Mechanistic studies in mouse microglia revealed that interference of PI3K-Akt signaling significantly decreased phagocytic uptake and proinflammatory response. Moreover, increased activity of Syk-kinase upon ligand-induced activation of Trem2/Dap12 signaling was detected. Finally, characterization of microglial pathology in cortical biopsies of iNPH patients revealed a significant decrease in the number of microglia per β-amyloid plaque in obese individuals with concomitant T2D as compared to both normal weight and obese individuals without T2D. Conclusions Collectively, these results suggest that diabetic phenotype in mice and humans mechanistically associates with abnormally reduced microglial responses to β-amyloid pathology and further suggest that AD and T2D share overlapping pathomechanisms, likely involving altered immune function in the brain. Supplementary Information The online version contains supplementary material available at 10.1186/s13024-020-00415-2.
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Affiliation(s)
- Teemu Natunen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Henna Martiskainen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Mikael Marttinen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Sami Gabbouj
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Hennariikka Koivisto
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Susanna Kemppainen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Satu Kaipainen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Mari Takalo
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Helena Svobodová
- Department of Simulation and Virtual Medical Education, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic
| | - Luukas Leppänen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Benjam Kemiläinen
- Department of Neurosurgery, Kuopio University Hospital, and Institute of Clinical Medicine, Unit of Neurosurgery, University of Eastern Finland, Kuopio, Finland
| | - Simo Ryhänen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Teemu Kuulasmaa
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Eija Rahunen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Sisko Juutinen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Petra Mäkinen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Pasi Miettinen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Tuomas Rauramaa
- Department of Pathology, Kuopio University Hospital, and Institute of Clinical Medicine, Unit of Pathology, University of Eastern Finland, Kuopio, Finland
| | - Jussi Pihlajamäki
- Department of Clinical Nutrition, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Annakaisa Haapasalo
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Ville Leinonen
- Department of Neurosurgery, Kuopio University Hospital, and Institute of Clinical Medicine, Unit of Neurosurgery, University of Eastern Finland, Kuopio, Finland
| | - Heikki Tanila
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Mikko Hiltunen
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland.
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233
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Trojan E, Bryniarska N, Leśkiewicz M, Regulska M, Chamera K, Szuster-Głuszczak M, Leopoldo M, Lacivita E, Basta-Kaim A. The Contribution of Formyl Peptide Receptor Dysfunction to the Course of Neuroinflammation: A Potential Role in the Brain Pathology. Curr Neuropharmacol 2020; 18:229-249. [PMID: 31629396 PMCID: PMC7327951 DOI: 10.2174/1570159x17666191019170244] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/01/2019] [Accepted: 10/15/2019] [Indexed: 12/27/2022] Open
Abstract
Chronic inflammatory processes within the central nervous system (CNS) are in part responsible for the development of neurodegenerative and psychiatric diseases. These processes are associated with, among other things, the increased and disturbed activation of microglia and the elevated production of proinflammatory factors. Recent studies indicated that the disruption of the process of resolution of inflammation (RoI) may be the cause of CNS disorders. It is shown that the RoI is regulated by endogenous molecules called specialized pro-resolving mediators (SPMs), which interact with specific membrane receptors. Some SPMs activate formyl peptide receptors (FPRs), which belong to the family of seven-transmembrane G protein-coupled receptors. These receptors take part not only in the proinflammatory response but also in the resolution of the inflammation process. Therefore, the activation of FPRs might have complex consequences. This review discusses the potential role of FPRs, and in particular the role of FPR2 subtype, in the brain under physiological and pathological conditions and their involvement in processes underlying neurodegenerative and psychiatric disorders as well as ischemia, the pathogenesis of which involves the dysfunction of inflammatory processes.
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Affiliation(s)
- Ewa Trojan
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St. 31-343 Krakow, Poland
| | - Natalia Bryniarska
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St. 31-343 Krakow, Poland
| | - Monika Leśkiewicz
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St. 31-343 Krakow, Poland
| | - Magdalena Regulska
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St. 31-343 Krakow, Poland
| | - Katarzyna Chamera
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St. 31-343 Krakow, Poland
| | - Magdalena Szuster-Głuszczak
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St. 31-343 Krakow, Poland
| | - Marcello Leopoldo
- Department of Pharmacy - Drug Sciences, University of Bari, via Orabona 4, 70125 Bari, Italy
| | - Enza Lacivita
- Department of Pharmacy - Drug Sciences, University of Bari, via Orabona 4, 70125 Bari, Italy
| | - Agnieszka Basta-Kaim
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St. 31-343 Krakow, Poland
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234
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Amin J, Boche D, Clough Z, Teeling J, Williams A, Gao Y, Chudley L, Lau L, Smith F, Harris S, Holmes C. Peripheral immunophenotype in dementia with Lewy bodies and Alzheimer's disease: an observational clinical study. J Neurol Neurosurg Psychiatry 2020; 91:1219-1226. [PMID: 32968032 PMCID: PMC7569376 DOI: 10.1136/jnnp-2020-323603] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/19/2020] [Accepted: 07/30/2020] [Indexed: 01/26/2023]
Abstract
BACKGROUND Inflammation plays a key role in the aetiology and progression of Alzheimer's disease (AD). However, the immunophenotype of the second most common neurodegenerative cause of dementia, dementia with Lewy bodies (DLB), remains unclear. To date there have been no studies examining peripheral inflammation in DLB using multiplex immunoassay and flow cytometry concomitantly. We hypothesised that, using blood biomarkers, DLB would show an increased proinflammatory profile compared with controls, and that there would be a distinct profile compared with AD. METHODS 93 participants (31 with DLB, 31 with AD and 31 healthy older controls) completed a single study visit for neuropsychiatric testing and phlebotomy. Peripheral blood mononuclear cells were quantified for T and B cell subsets using flow cytometry, and serum cytokine concentrations were measured using multiplex immunoassay. RESULTS We detected reduced relative numbers of helper T cells and reduced activation of B cells in DLB compared with AD. Additionally, interleukin (IL)-1β was detected more frequently in DLB and the serum concentration of IL-6 was increased compared with controls. CONCLUSIONS Peripheral inflammation is altered in DLB compared with AD, with T cell subset analysis supporting a possible shift towards senescence of the adaptive immune system in DLB. Furthermore, there is a proinflammatory signature of serum cytokines in DLB. Identification of this unique peripheral immunophenotype in DLB could guide development of an immune-based biomarker and direct future work exploring potential immune modulation as a novel treatment.
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Affiliation(s)
- Jay Amin
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.,Memory Assessment and Research Centre, Southern Health NHS Foundation Trust, Southampton, UK
| | - Delphine Boche
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Zoe Clough
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.,Memory Assessment and Research Centre, Southern Health NHS Foundation Trust, Southampton, UK
| | - Jessica Teeling
- Faculty of Natural and Environmental Science, University of Southampton, Southampton, UK
| | - Anthony Williams
- Regional Clinical Immunology Laboratory, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Yifang Gao
- Regional Clinical Immunology Laboratory, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Lindsey Chudley
- Regional Clinical Immunology Laboratory, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Laurie Lau
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Florence Smith
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Scott Harris
- Medical Statistics, School of Primary Care, Population Sciences and Medical Education, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Clive Holmes
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK .,Memory Assessment and Research Centre, Southern Health NHS Foundation Trust, Southampton, UK
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Serum levels of resistin and its relationship with some pro-inflammatory cytokines in a cohort of Egyptian patients with Alzheimer's disease. ENDOCRINE AND METABOLIC SCIENCE 2020. [DOI: 10.1016/j.endmts.2020.100054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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236
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Semochkina YP, Moskaleva EY, Malashenkova IK, Krynskiy SA, Hailov NA, Ogurtsov DP, Ponomareva EV, Gavrilova SI. [Effectiveness of the DNA double-strand breaks repair system in lymphocytes of patients with cognitive impairments and healthy volunteers]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2020; 66:345-352. [PMID: 32893818 DOI: 10.18097/pbmc20206604345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The individual differences in the efficiency of DNA DSB repair were estimated by the level of residual γH2AX foci after γ-irradiation at a dose of 2 Gy, in lymphocytes of patients with amnestic mild cognitive impairment (AMCI) and Alzheimer's disease (AD) and of healthy volunteers. Lymphocytes were isolated from the peripheral blood of the examined patients and were frozen in a medium for freezing cells. Before the study, the lymphocytes were thawed, suspended in RPMI 1640 culture medium supplemented with 10% inactivated fetal bovine serum, and half of the cells were γ-irradiated at 4°C from a 60Co source on a GUT-200M facility at a dose of 2 Gy (a dose rate of 0.75 Gy/min). Control and irradiated lymphocytes were cultured for 24 h, collected, fixed, and stored until the study of the number of spontaneous and residual foci of γH2AX using fluorescent microscopy after staining with fluorescent labeled antibodies. In lymphocytes of patients with AMCI and AD a higher number of residual γH2AX foci in lymphocytes and the higher number of lymphocytes with foci were found compared with healthy volunteers. This indicates a decrease in the ability to repair DNA DSB in these patients. Indicators of cellular immunity and the concentration of TNF-α in the blood serum in the group of examined patients were normal. In the group of patients with the cognitive impairments (AMCI+AD), a correlation was found between the number of residual foci of γH2AX and the number of CD3+CD4+ lymphocytes and the concentration of proinflammatory cytokine TNF-α in the blood serum. This suggests the development of stronger neuroinflammation in patients with reduced ability to repair DNA DSB in this pathology.
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237
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Boots EA, Castellanos KJ, Zhan L, Barnes LL, Tussing-Humphreys L, Deoni SCL, Lamar M. Inflammation, Cognition, and White Matter in Older Adults: An Examination by Race. Front Aging Neurosci 2020; 12:553998. [PMID: 33192454 PMCID: PMC7662133 DOI: 10.3389/fnagi.2020.553998] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 10/12/2020] [Indexed: 11/18/2022] Open
Abstract
Objectives Non-Latino Black adults have greater risk for Alzheimer’s dementia compared to non-Latino White adults, possibly due to factors disproportionally affecting Black adults including cardiovascular disease (CVD). Chronic peripheral inflammation is implicated in both Alzheimer’s dementia and CVD and is known to impact cognition and cerebral white matter, yet little work has examined these associations by race. This study examined associations between inflammation, cognition, and cerebral white matter generally, and by race. Methods Eighty-six non-demented older Black and White participants (age = 69.03; 50% female; 45% Black participants) underwent fasting venipuncture, cognitive testing, and MRI. Serum was assayed for interleukin-6 (IL-6), C-reactive protein (CRP), and interleukin 1-beta. Cognitive domains included memory, executive function, and attention/information processing. MRI measures included white matter hyperintensity volumes (WMH) and quantification of white matter integrity in areas outside WMHs via DTI-derived fractional anisotropy (FA) and mean diffusivity, as well as multi-component relaxometry derived myelin water fraction (MWF). Results Black and White participants did not differ on age, sex, or CVD risk. Separate linear regression models adjusting for relevant confounders revealed that higher IL-6 associated with lower executive function and higher CRP levels associated with lower FA and MWF. Stratified analyses revealed that these association were significant for Black participants only. Discussion These findings suggest that peripheral inflammation is inversely associated with select cognitive domains and white matter integrity (but not WMHs), particularly in older Black adults. It is important to consider race when investigating inflammatory associates of brain and behavior.
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Affiliation(s)
- Elizabeth A Boots
- Department of Psychology, University of Illinois at Chicago, Chicago, IL, United States.,Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, United States
| | - Karla J Castellanos
- Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, IL, United States
| | - Liang Zhan
- Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA, United States
| | - Lisa L Barnes
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, United States.,Department of Psychiatry and Behavioral Sciences, Rush University Medical Center, Chicago, IL, United States
| | - Lisa Tussing-Humphreys
- Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, IL, United States.,Division of Academic Internal Medicine and Geriatrics, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States.,University of Illinois Cancer Center, Chicago, IL, United States
| | - Sean C L Deoni
- Advanced Baby Imaging Lab, Women and Infants Hospital, and Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Melissa Lamar
- Department of Psychology, University of Illinois at Chicago, Chicago, IL, United States.,Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, United States.,Department of Psychiatry and Behavioral Sciences, Rush University Medical Center, Chicago, IL, United States
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238
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Abdellatif AAH, Rasheed Z, Alhowail AH, Alqasoumi A, Alsharidah M, Khan RA, Aljohani ASM, Aldubayan MA, Faisal W. Silver Citrate Nanoparticles Inhibit PMA-Induced TNFα Expression via Deactivation of NF-κB Activity in Human Cancer Cell-Lines, MCF-7. Int J Nanomedicine 2020; 15:8479-8493. [PMID: 33154638 PMCID: PMC7608585 DOI: 10.2147/ijn.s274098] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/09/2020] [Indexed: 12/19/2022] Open
Abstract
Background The nuclear factor kappa-B (NF-κB) is a major transcription factor responsible for the production of numerous inflammatory mediators, including the tumor necrosis factor (TNFα), which has a lethal association with cancer’s onset. The silver nanoparticles (AgNPs) are widely used in cancer treatment and several other biomedical applications. Objective The study aimed to determine the effects of silver citrate nanoparticles (AgNPs-CIT) on NF-κB activation together with TNFα mRNA/protein expressions in the phorbol myristate acetate (PMA)-stimulated MCF-7 human breast cancer cell-lines. Methods The AgNPs-CIT were synthesized by the reduction method, and the prepared AgNPs-CIT were characterized for their shape, absorption in UV-VIS electromagnetic radiations, size distribution, ζ-potential, and antioxidant activity. The MCF-7 cell-lines were pretreated with AgNPs-CIT and stimulated with PMA. The TNFα mRNA expressions were determined by real-time PCR, whereas the protein production was determined by the ELISA. The NF-κB activity was distinctly observed by highly-specific DNA-based ELISA, and by NF-κB-specific inhibitor, Bay 11–7082. Results The prepared AgNPs-CIT were spherical and have an absorption wavelength range of 381–452 nm wherein the particles size ranged between 19.2±0.1 to 220.77±0.12 nm with the charge range −9.99±0.8 to −34.63±0.1 mV. The prepared AgNPs-CIT showed comparative antioxidant activity at >40% inhibitions level of the DPPH radicals. The AgNPs-CIT were found to be non-toxic to MCF-7 cell-lines and inhibited PMA-induced activation of the NF-κBp65, and also the mRNA/protein expression of TNFα. Conclusion This is the first report that showed AgNPs-CIT inhibited TNFα expression via deactivation of the NF-κB signaling event in stimulated breast cancer cells. The results have important implications for the development of novel therapeutic strategies for the prevention/treatment of cancers and/or inflammatory disorders.
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Affiliation(s)
- Ahmed A H Abdellatif
- Department of Pharmaceutics, College of Pharmacy, Qassim University, Buraydah 51452, Kingdom of Saudi Arabia.,Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt
| | - Zafar Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraydah 51452, Kingdom of Saudi Arabia
| | - Ahmad H Alhowail
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah 51452, Kingdom of Saudi Arabia
| | - Abdulmajeed Alqasoumi
- Department of Pharmacy Practice, College of Pharmacy, Qassim University, Buraydah 51452, Kingdom of Saudi Arabia
| | - Mansour Alsharidah
- Department of Physiology, College of Medicine, Qassim University, Buraydah 51452, Kingdom of Saudi Arabia
| | - Riaz A Khan
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah 51452, Kingdom of Saudi Arabia
| | - Abdullah S M Aljohani
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Kingdom of Saudi Arabia
| | - Maha A Aldubayan
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah 51452, Kingdom of Saudi Arabia
| | - Waleed Faisal
- School of Pharmacy, University College Cork, Cork, Ireland.,Faculty of Pharmacy, Minya University, Minya, Egypt
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239
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Mohammadi H, Manouchehri H, Changizi R, Bootorabi F, Khorramizadeh MR. Concurrent metformin and silibinin therapy in diabetes: assessments in zebrafish ( Danio rerio) animal model. J Diabetes Metab Disord 2020; 19:1233-1244. [PMID: 33553026 DOI: 10.1007/s40200-020-00637-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/14/2020] [Indexed: 01/11/2023]
Abstract
Objective In this study, zebrafish was used as a biological model to induce type 2 diabetes mellitus through glucose. Then, the effect of metformin and silibinin combination was examined on elevated blood glucose, intestinal tissues, liver enzymes, and TNF-α, IFN-γ, INL1β genes as inflammation marker genes. Methods The liver enzymes (AST, ALT, and ALP) derived from fish viscera homogenate supernatants were assayed in an auto-analyzer. The expression of target genes was quantified on RNA extracted from the tails by an in-house RT-PCR method, with fine intestine tissue staining performed by hematoxylin and eosin protocol (H&E). Result In the glucose-free treatments, metformin and silymarin decreased the levels of AST, ALT, and ALP enzymes in the blood. The combination of these two drugs had also a significant role in reducing glucose levels. The body weight increased significantly in the control group which was affected by glucose concentration, with the lowest body weight gain observed in the metformin group. The expression of INL-1β gene was significantly enhanced in the control group and the highest IFN-γ expression was observed in both control groups with glucose (G + CTRL) and without glucose (G-CTRL) (p < 0.05). The lowest level of TNF-α gene expression was observed in the control + glucose group (G + CTRL) (p < 0.05). Diabetic state causes weak absorption whereby the fish body demands to increase absorption level by enhancing the amount of acidic goblet cells thereby acidifying the environment in the gastric tracts. Conclusion Collectively, this study indicated that treatment with metformin and Silibinin could improve metabolic-mediated performances by reducing the expression of inflammatory genes and blood glucose, modulating liver enzymes, and ameliorating the intestinal inflammation in type 2 diabetic zebrafish model.
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Affiliation(s)
- Hassan Mohammadi
- Department of Aquaculture Science, Babol Branch, Islamic Azad University, Babol, Iran
| | - Hamed Manouchehri
- Department of Aquaculture Science, Babol Branch, Islamic Azad University, Babol, Iran
| | - Reza Changizi
- Department of Aquaculture Science, Babol Branch, Islamic Azad University, Babol, Iran
| | - Fatemeh Bootorabi
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Mohammad Reza Khorramizadeh
- Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, and Zebra fish core Facility (ZFIN ID : ZDB-LAB-190117-2), Endocrinology and Metabolism research Institute, Tehran university of Medical Sciences, Tehran, Iran
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Katsinelos T, Doulberis M, Polyzos SA, Papaefthymiou A, Katsinelos P, Kountouras J. Molecular Links Between Alzheimer's Disease and Gastrointestinal Microbiota: Emphasis on Helicobacter pylori Infection Involvement. Curr Mol Med 2020; 20:3-12. [PMID: 31530263 DOI: 10.2174/1566524019666190917125917] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 08/09/2019] [Accepted: 09/29/2019] [Indexed: 12/18/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease and the main form of dementia, characterized by progressive cognitive decline and detrimental consequences in both personal-family and global level. Within this narrative review, we provide recent molecular aspects of Tau, a microtubule AD-associated protein, as well as amyloid beta, involved in AD pathophysiology. Moreover, we provide additional emerging data from basic research as well as clinical studies indicating an implicating role of gastrointestinal microbiota (GI-M), including Helicobacter pylori infection (Hp-I), in AD pathophysiology. Likewise, we identified through a molecular prism the current evidence of AD pathogenesis as well as its linkage with GI-M and emphasizing the role of Hp-I. All in all, additional large-scale studies are required for the further clarification of AD pathophysiology and its connection with GI-M and Hp-I, so as novel therapies on molecular basis become available.
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Affiliation(s)
- Taxiarchis Katsinelos
- UK Dementia Research Institute at the University of Cambridge, Hills Road, Cambridge, CB2 0AH, United Kingdom
| | - Michael Doulberis
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich 8091, Switzerland.,Department of Internal Medicine, Second Medical Clinic, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki 54642, Macedonia, Greece
| | - Stergios A Polyzos
- Department of Internal Medicine, Second Medical Clinic, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki 54642, Macedonia, Greece.,First Department of Pharmacology Medical School, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece
| | - Apostolis Papaefthymiou
- Department of Internal Medicine, Second Medical Clinic, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki 54642, Macedonia, Greece.,Department of Gastroenterology, 401 General Military Hospital of Athens, Athens 11525, Greece
| | - Panagiotis Katsinelos
- Department of Internal Medicine, Second Medical Clinic, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki 54642, Macedonia, Greece
| | - Jannis Kountouras
- Department of Internal Medicine, Second Medical Clinic, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki 54642, Macedonia, Greece
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Moyse E, Haddad M, Benlabiod C, Ramassamy C, Krantic S. Common Pathological Mechanisms and Risk Factors for Alzheimer's Disease and Type-2 Diabetes: Focus on Inflammation. Curr Alzheimer Res 2020; 16:986-1006. [PMID: 31692443 DOI: 10.2174/1567205016666191106094356] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 09/10/2019] [Accepted: 10/11/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Diabetes is considered as a risk factor for Alzheimer's Disease, but it is yet unclear whether this pathological link is reciprocal. Although Alzheimer's disease and diabetes appear as entirely different pathological entities affecting the Central Nervous System and a peripheral organ (pancreas), respectively, they share a common pathological core. Recent evidence suggests that in the pancreas in the case of diabetes, as in the brain for Alzheimer's Disease, the initial pathological event may be the accumulation of toxic proteins yielding amyloidosis. Moreover, in both pathologies, amyloidosis is likely responsible for local inflammation, which acts as a driving force for cell death and tissue degeneration. These pathological events are all inter-connected and establish a vicious cycle resulting in the progressive character of both pathologies. OBJECTIVE To address the literature supporting the hypothesis of a common pathological core for both diseases. DISCUSSION We will focus on the analogies and differences between the disease-related inflammatory changes in a peripheral organ, such as the pancreas, versus those observed in the brain. Recent evidence suggesting an impact of peripheral inflammation on neuroinflammation in Alzheimer's disease will be presented. CONCLUSION We propose that it is now necessary to consider whether neuroinflammation in Alzheimer's disease affects inflammation in the pancreas related to diabetes.
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Affiliation(s)
| | - Mohamed Haddad
- INRS-Centre Armand-Frappier Sante Biotechnologie, Laval, QC, Canada
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242
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Manji Z, Rojas A, Wang W, Dingledine R, Varvel NH, Ganesh T. 5xFAD Mice Display Sex-Dependent Inflammatory Gene Induction During the Prodromal Stage of Alzheimer's Disease. J Alzheimers Dis 2020; 70:1259-1274. [PMID: 31322556 DOI: 10.3233/jad-180678] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Alzheimer's disease (AD) pathology consists of extracellular deposits of amyloid-β peptides (Aβ) and intracellular neurofibrillary tangles. These pathological alterations are accompanied by a neuroinflammatory response consisting of increased expression of inflammatory mediators. An anti-inflammatory strategy designed to prevent or delay the development of AD would benefit from knowing when neuroinflammation appears in the transgenic models during prodromal disease stages relative to Aβ pathology. We investigated the expression patterns of inflammatory mediators in the brain of 5xFAD mice in comparison to development of Aβ deposition. Expression changes in inflammatory mediators and glial markers are more robust in female mice starting at three months of age, in contrast to males in which there is no clear trend through five months. Female and male 5xFAD mice also displayed an age-dependent increase in cortical Aβ deposition congruent with neuroinflammation. Thus, in the 5xFAD mouse model of AD, administration of an anti-inflammatory agent would be most efficacious when administered before three months of age.
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Affiliation(s)
- Zahra Manji
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Asheebo Rojas
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Wenyi Wang
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Raymond Dingledine
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Nicholas H Varvel
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
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243
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Heo CE, Han JY, Lim S, Lee J, Im D, Lee MJ, Kim YK, Kim HI. ATP Kinetically Modulates Pathogenic Tau Fibrillations. ACS Chem Neurosci 2020; 11:3144-3152. [PMID: 32915536 DOI: 10.1021/acschemneuro.0c00479] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Advanced understanding of Alzheimer's disease (AD) and several tauopathies over the past decades indicates the pathological importance of tau aggregation in these diseases. Herein, we demonstrated that adenosine triphosphate (ATP), a highly charged anionic molecule found abundantly in the cytosol of cells, catalyzes fibrillation of tau as well as human islet amyloid polypeptide, a representative of basic intrinsically disordered proteins. Our results showed that ATP attracts multiple lysine residues of the four-repeat domain of tau (K18) via supramolecular complexation, thereby forming dimers that are converted to nuclei and accelerate fibril elongation. However, ATP was not directly incorporated into the K18 fibrils, suggesting that ATP plays the role of a catalyst, rather than a reactant, during K18 fibrillation. We also characterized the correlation between ATP dyshomeostasis and tau aggregation in the cellular environment. Our multiple biophysical approaches, including native mass spectrometry (MS), small-angle X-ray scattering (SAXS), and molecular dynamics (MD) simulation, provided insights into the molecular-level influence of ATP on the structural changes and fibrillation of tau.
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Affiliation(s)
- Chae Eun Heo
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
- Center for Proteogenomics Research, Korea University, Seoul 02841, Republic of Korea
| | - Jong Yoon Han
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
- Center for Proteogenomics Research, Korea University, Seoul 02841, Republic of Korea
| | - Sungsu Lim
- Brain Science Institute, Center for Neuromedicine, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Jeeyoung Lee
- Department of Biomedical Sciences, Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Dongjoon Im
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
- Center for Proteogenomics Research, Korea University, Seoul 02841, Republic of Korea
| | - Min Jae Lee
- Department of Biomedical Sciences, Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Yun Kyung Kim
- Brain Science Institute, Center for Neuromedicine, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Department of Biological Chemistry, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Hugh I. Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
- Center for Proteogenomics Research, Korea University, Seoul 02841, Republic of Korea
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244
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Henríquez G, Gomez A, Guerrero E, Narayan M. Potential Role of Natural Polyphenols against Protein Aggregation Toxicity: In Vitro, In Vivo, and Clinical Studies. ACS Chem Neurosci 2020; 11:2915-2934. [PMID: 32822152 DOI: 10.1021/acschemneuro.0c00381] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
One of the main features of neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease is the amyloidogenic behavior of disease-specific proteins including amyloid β, tau, α-synuclein, and mutant Huntingtin which participate in the formation, accumulation, and deposition of toxic misfolded aggregates. Consequently, these proteins not only associated with the progress of their respective neurodegenerative pathologies but also qualify as disease-specific biomarkers. The aim of using natural polyphenols is to target amyloid-dependent proteopathies by decreasing free radical damage and inhibiting and dissolving amyloid fibrils. We explore the effectiveness of the polyphenols epigallocatechin-3-gallate, oleuropein aglycone, and quercetin on their ability to inhibit aggregation of amyloid β, tau, and α-synuclein and mitigate other pathological features for Alzheimer's disease and Parkinson's disease. The analysis was carried from in vitro and cell line studies to animal models and clinical trials. This Review describes the use of phytochemical compounds as prophylactic agents for Alzheimer's disease, Parkinson's disease, and other proteopathies.
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Affiliation(s)
- Gabriela Henríquez
- Department of Environmental Science and Engineering, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
| | - Alejandra Gomez
- Department of Chemistry and Biochemistry, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
| | - Erick Guerrero
- Department of Chemistry and Biochemistry, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
| | - Mahesh Narayan
- Department of Chemistry and Biochemistry, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
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245
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Duarte-Guterman P, Albert AY, Inkster AM, Barha CK, Galea LAM. Inflammation in Alzheimer's Disease: Do Sex and APOE Matter? J Alzheimers Dis 2020; 78:627-641. [PMID: 33016923 DOI: 10.3233/jad-200982] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) disproportionately affects females with steeper cognitive decline and more neuropathology compared to males, which is exacerbated in females carrying the APOEɛ4 allele. The risk of developing AD is also higher in female APOEɛ4 carriers in earlier age groups (aged 65-75), and the progression from cognitively normal to mild cognitive impairment (MCI) and to AD may be influenced by sex. Inflammation is observed in AD and is related to aging, stress, and neuroplasticity, and although studies are scarce, sex differences are noted in inflammation. OBJECTIVE The objective of this study was to investigate underlying physiological inflammatory mechanisms that may help explain why there are sex differences in AD and APOEɛ4 carriers. METHODS We investigated, using the ADNI database, the effect of sex and APOE genotype (non-carriers or carriers of 1 and 2 APOEɛ4 alleles) and sex and diagnosis (cognitively normal (CN), MCI, AD) on CSF (N = 279) and plasma (N = 527) markers of stress and inflammation. RESULTS We found CSF IL-16 and IL-8 levels differed by sex and APOE genotype, as IL-16 was higher in female APOEɛ4 carriers compared to non-carriers, while the opposite pattern was observed in males with IL-8. Furthermore, females had on average higher levels of plasma CRP and ICAM1 but lower levels of CSF ICAM1, IL-8, IL-16, and IgA than males. Carrying APOEɛ4 alleles and diagnosis (MCI and AD) decreased plasma CRP in both sexes. CONCLUSION Sex and APOE genotype differences in CSF and plasma inflammatory biomarkers support that the underlying physiological changes during aging differ by sex and tissue origin.
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Affiliation(s)
- Paula Duarte-Guterman
- Djavad Mowafaghian Centre for Brain Health and Department of Psychology, University of British Columbia, Vancouver, BC, Canada
| | - Arianne Y Albert
- Women's Health Research Institute of British Columbia, Vancouver, BC, Canada
| | - Amy M Inkster
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada.,BC Children's Hospital Research Institute, Vancouver, BC, Canada
| | - Cindy K Barha
- Djavad Mowafaghian Centre for Brain Health and Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada
| | - Liisa A M Galea
- Djavad Mowafaghian Centre for Brain Health and Department of Psychology, University of British Columbia, Vancouver, BC, Canada
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Thomas AJ, Hamilton CA, Donaghy PC, Martin-Ruiz C, Morris CM, Barnett N, Olsen K, Taylor JP, O'Brien JT. Prospective longitudinal evaluation of cytokines in mild cognitive impairment due to AD and Lewy body disease. Int J Geriatr Psychiatry 2020; 35:1250-1259. [PMID: 32557792 DOI: 10.1002/gps.5365] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/04/2020] [Accepted: 06/13/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVES We conducted a prospective longitudinal study of plasma cytokines during the Mild Cognitive Impairment (MCI) stage of Lewy body disease and Alzheimer's disease, hypothesizing that cytokine levels would decrease over time and that this would be correlated with decline in cognition. METHODS Older (≥60) people with MCI were recruited from memory services in healthcare trusts in North East England, UK. MCI was diagnosed as due to Alzheimer's disease (MCI-AD) or Lewy body disease (MCI-LB). Baseline and repeat annual clinical and cognitive assessments were undertaken and plasma samples were obtained at the same time. Cytokine assays were performed on all samples using the Meso Scale Discovery V-Plex Plus Proinflammatory Panel 1, which included IFNγ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13 and TNFα. RESULTS Fifty-six patients (21 MCI-AD, 35 MCI-LB) completed prospective evaluations and provided samples up to 3 years after baseline. Six cytokines (IFNγ, IL-1β, IL-2, IL-4, IL-6 and IL-10) showed highly significant (P < .002) decreases over time. AD and LB did not differ in rate of decrease nor were there any effects related to age or general morbidity. Decrease in five of these cytokines (IFNγ, IL-1β, IL-2, IL-4, and IL-10) was highly correlated with decrease in cognition (P < .003). CONCLUSIONS Peripheral inflammation decreased in both disease groups during MCI suggesting this may be a therapeutic window for future anti-inflammatory agents.
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Affiliation(s)
- Alan J Thomas
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Calum A Hamilton
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Paul C Donaghy
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Carmen Martin-Ruiz
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Chris M Morris
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Nicola Barnett
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Kirsty Olsen
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - John-Paul Taylor
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - John T O'Brien
- Department of Psychiatry, University of Cambridge, Cambridge, UK
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Fessel J. Caveolae, CD109, and endothelial cells as targets for treating Alzheimer's disease. ALZHEIMER'S & DEMENTIA (NEW YORK, N. Y.) 2020; 6:e12066. [PMID: 32995471 PMCID: PMC7506987 DOI: 10.1002/trc2.12066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/15/2020] [Accepted: 07/09/2020] [Indexed: 11/09/2022]
Abstract
Reduced functionality of transforming growth factor β (TGF-β) is a major pathogenetic component of Alzheimer's disease (AD). The reduction is caused by an ≈50% decrease in the AD brain of the TGF-β receptor, TGFBR, causing a bottleneck effect that reduces the downstream actions of TGF-β, which is highly disadvantageous for brain function. Degradation of TGFBR occurs in caveolae with participation by caveolin-1 (Cav-1) and CD109. Mechanisms for this are discussed. In the cerebral microcirculation, endothelial cells (which are rich in caveolae) carry CD109 as a surface marker that co-precipitates with Cav-1. Atorvastatin reduced Cav-1 by 75% and, because Cav-1 and CD109 co-immunoprecipitate reciprocally, atorvastatin would also reduce the level of CD109. Administration of atorvastatin as a component of combination therapy would diminish the degradation of TGFBR and thereby benefit patients with AD.
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Affiliation(s)
- Jeffrey Fessel
- Department of Medicine University of California School of Medicine San Francisco California USA
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248
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Sharma VK, Singh TG. Insulin resistance and bioenergetic manifestations: Targets and approaches in Alzheimer's disease. Life Sci 2020; 262:118401. [PMID: 32926928 DOI: 10.1016/j.lfs.2020.118401] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/04/2020] [Accepted: 09/05/2020] [Indexed: 12/15/2022]
Abstract
AIM Insulin has a well-established role in cognition, neuronal detoxification and synaptic plasticity. Insulin transduction affect neurotransmitter functions, influence bioenergetics and regulate neuronal survival through regulating glucose energy metabolism and downward pathways. METHODS A systematic literature review of PubMed, Medline, Bentham, Scopus and EMBASE (Elsevier) databases was carried out with the help of the keywords like "Alzheimer's disease; Hypometabolism; Oxidative stress; energy failure in AD, Insulin; Insulin resistance; Bioenergetics" till June 2020. The review was conducted using the above keywords to collect the latest articles and to understand the nature of the extensive work carried out on insulin resistance and bioenergetic manifestations in Alzheimer's disease. KEY FINDINGS The article sheds light on insulin resistance mediated hypometabolic state on pathological progression of AD. The disrupted insulin signaling has pathological outcome in form of disturbed glucose homeostasis, altered bioenergetic state which increases build-up of senile plaques (Aβ), neurofibrillary tangles (τ), decline in transportation of glucose and activation of inflammatory pathways. The mechanistic link of insulin resistant state with therapeutically explorable potential transduction pathways is the focus of the reviewed work. SIGNIFICANCE The present work opines that the mechanism by which the insulin resistance mediates dysregulation of bioenergetics and progresses to neurodegenerative state holds the tangible potential to succeed in the development of novel dementia therapies. Further, hypometabolic complications and altered insulin signaling may be explored as a mechanistic relation between bioenergetic deficits and AD.
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Affiliation(s)
- Vivek Kumar Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India; Govt. College of Pharmacy, Rohru, District Shimla, Himachal Pradesh 171207, India
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Sarlus H, Codita A, Wang X, Cedazo-Minguez A, Schultzberg M, Oprica M. Chronic Airway Allergy Induces Pro-Inflammatory Responses in the Brain of Wildtype Mice but Not 3xTgAD Mice. Neuroscience 2020; 448:14-27. [PMID: 32916195 DOI: 10.1016/j.neuroscience.2020.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 08/30/2020] [Accepted: 09/01/2020] [Indexed: 12/01/2022]
Abstract
The effects of systemic inflammation on the pathogenesis of Alzheimer's disease (AD) are not clarified, both beneficial and deleterious effects being reported. Allergy is accompanied by a systemic inflammatory response and some epidemiological studies have reported a positive association between a history of allergy/asthma and dementia. To investigate whether chronic airway allergy influences the inflammatory status in the brain, AD-like pathology, and behaviour in relation to AD, we induced chronic airway allergy in triple transgenic AD (3xTgAD) and wildtype (WT) mice by repeated exposure to ovalbumin (OVA) as allergen. Behavioural tests relevant for hippocampus-dependent behaviour were performed. We found that allergy significantly increased the brain levels of immunoglobulin (Ig) G, IgE. In 3xTgAD mice, allergy increased the levels of decay accelerating factor and decreased the phosphorylation of p38. In contrast, allergy increased the levels of interleukin (IL)-1β and complement component 1q (C1q) in WT mice. Bronchoalveolar lavage fluid analysis confirmed eosinophilia in both genotypes, but the basal levels of eosinophils were lower in 3xTgAD mice. In summary, allergy induced predominantly anti-inflammatory effects in 3xTgAD mice, and pro-inflammatory effects in WT mice, thus being another potential factor to be considered when studying AD pathogenesis.
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Affiliation(s)
- Heela Sarlus
- Karolinska Institutet, Department of Clinical Neuroscience, Center for Molecular Medicine L8:04, SE-171 76 Solna, Sweden.
| | - Alina Codita
- Södertälje Hospital, Geriatric Clinic, Södertälje, Sweden.
| | - Xiuzhe Wang
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Angel Cedazo-Minguez
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Division of Neuroceriatrics, Center for Alzheimer Research at Karolinska Institutet, BioClinicum J9:20, SE-171 64 Solna, Sweden.
| | - Marianne Schultzberg
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Division of Neuroceriatrics, Center for Alzheimer Research at Karolinska Institutet, BioClinicum J9:20, SE-171 64 Solna, Sweden.
| | - Mircea Oprica
- Department of Neurology, Karolinska University Hospital, Stockholm, Sweden.
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Wee JH, Yoo DM, Byun SH, Hong SJ, Park MW, Choi HG. Association between neurodegenerative dementia and chronic rhinosinusitis: A nested case-control study using a national health screening cohort. Medicine (Baltimore) 2020; 99:e22141. [PMID: 32899101 PMCID: PMC7478549 DOI: 10.1097/md.0000000000022141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The aim of this case-control study was to evaluate the association between chronic rhinosinusitis (CRS) and neurodegenerative dementia in a large representative Korean population. The ≥ 50-year-old population was selected from the Korean Health Insurance Review and Assessment Service - National Sample Cohort from 2002 to 2015. A total of 17,634 neurodegenerative dementia patients were matched in a 1:4 ratio with 70,536 control participants for age, sex, income, and region of residence. Neurodegenerative dementia was defined using the ICD-10 codes G30 and F00. CRS was identified based on the ICD-10 code J32. Among the cohort, we selected participants who were treated ≥ 2 times and those who underwent head and neck computed tomography. The odds ratio (OR) for CRS in patients with dementia was analyzed using a conditional logistic regression model. Subgroup analyses were conducted according to age and sex. There was no difference in the prevalence of CRS with/without nasal polyps between the dementia (1.1%) and control (1.2%) groups (P = .825). CRS with/without nasal polyps was not significantly associated with dementia (adjusted OR = 0.96, 95% CI = 0.82-1.13, P = .653). In the subgroup analyses according to age and sex, the adjusted ORs for CRS with/without nasal polyps were not higher in the dementia group than in the control group. Previous CRS was not associated with neurodegenerative dementia in the Korean population.
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Affiliation(s)
- Jee Hye Wee
- Department of Otorhinolaryngology-Head & Neck Surgery, Hallym University Sacred Heart Hospital
| | - Dae Myoung Yoo
- Hallym Data Science Laboratory, Hallym University Sacred Heart Hospital
| | - Soo Hwan Byun
- Department of Oral & Maxillofacial Surgery, Dentistry, Hallym University College of Medicine, Hallym University Sacred Heart Hospital, Anyang
| | - Seok Jin Hong
- Department of Otorhinolaryngology-Head & Neck Surgery, Hallym University College of Medicine, Hallym University Dongtan Sacred Heart Hospital, Dongtan
| | - Min Woo Park
- Department of Otorhinolaryngology-Head & Neck Surgery, Kangdong Sacred Heart Hospital, Seoul, South Korea
| | - Hyo Geun Choi
- Department of Otorhinolaryngology-Head & Neck Surgery, Hallym University Sacred Heart Hospital
- Hallym Data Science Laboratory, Hallym University Sacred Heart Hospital
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