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Air Pollution-Related Brain Metal Dyshomeostasis as a Potential Risk Factor for Neurodevelopmental Disorders and Neurodegenerative Diseases. ATMOSPHERE 2020. [DOI: 10.3390/atmos11101098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Increasing evidence links air pollution (AP) exposure to effects on the central nervous system structure and function. Particulate matter AP, especially the ultrafine (nanoparticle) components, can carry numerous metal and trace element contaminants that can reach the brain in utero and after birth. Excess brain exposure to either essential or non-essential elements can result in brain dyshomeostasis, which has been implicated in both neurodevelopmental disorders (NDDs; autism spectrum disorder, schizophrenia, and attention deficit hyperactivity disorder) and neurodegenerative diseases (NDGDs; Alzheimer’s disease, Parkinson’s disease, multiple sclerosis, and amyotrophic lateral sclerosis). This review summarizes the current understanding of the extent to which the inhalational or intranasal instillation of metals reproduces in vivo the shared features of NDDs and NDGDs, including enlarged lateral ventricles, alterations in myelination, glutamatergic dysfunction, neuronal cell death, inflammation, microglial activation, oxidative stress, mitochondrial dysfunction, altered social behaviors, cognitive dysfunction, and impulsivity. Although evidence is limited to date, neuronal cell death, oxidative stress, and mitochondrial dysfunction are reproduced by numerous metals. Understanding the specific contribution of metals/trace elements to this neurotoxicity can guide the development of more realistic animal exposure models of human AP exposure and consequently lead to a more meaningful approach to mechanistic studies, potential intervention strategies, and regulatory requirements.
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Polverino A, Rucco R, Stillitano I, Bonavita S, Grimaldi M, Minino R, Pesoli M, Trojsi F, D'Ursi AM, Sorrentino G, Sorrentino P. In Amyotrophic Lateral Sclerosis Blood Cytokines Are Altered, but Do Not Correlate with Changes in Brain Topology. Brain Connect 2020; 10:411-421. [PMID: 32731760 DOI: 10.1089/brain.2020.0741] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aim: The present study aims at investigating the possible correlation between peripheral markers of inflammation and brain networks. Introduction: Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease dominated by progressive motor impairment. Among the complex mechanisms contributing to the pathogenesis of the disease, neuroinflammation, which is associated with altered circulating cytokine levels, is suggested to play a prominent role. Methods: Based on magnetoencephalography data, we estimated topological properties of the brain networks in ALS patients and healthy controls. Subsequently, the blood levels of a subset of cytokines were assayed. Finally, we modeled the brain topological features in the function of the cytokine levels. Results: Significant differences were found in the levels of the cytokines interleukin (IL)-4, IL-1β, and interferon-gamma (IFN-γ) between patients and controls. In particular, IL-4 and IL-1β levels increased in ALS patients, while the IFN-γ level was higher in healthy controls. We also detected modifications in brain global topological parameters in terms of hyperconnectedness. Despite both blood cytokines and brain topology being altered in ALS patients, such changes do not appear to be in a direct relationship. Conclusion: Our results would be in line with the idea that topological changes relate to neurodegenerative processes. However, the absence of correlation between blood cytokines and topological parameters of brain networks does not preclude that inflammatory processes contribute to the alterations of the brain networks. Impact statement The progression of amyotrophic lateral sclerosis entails both neurodegenerative and inflammatory processes. Furthermore, disease progression induces global modifications of the brain networks, with advanced stages showing a more compact, hyperconnected network topology. The pathophysiological processes underlying topological changes are unknown. In this article, we hypothesized that the global inflammatory profile would relate to the topological alterations. Our results showed that this is not the case, as modeling the topological properties as a function of the inflammatory state did not yield good predictions. Hence, our results suggest that topological changes might directly relate to neurodegenerative processes instead.
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Affiliation(s)
- Arianna Polverino
- Institute of Diagnosis and Treatment Hermitage Capodimonte, Naples, Italy
| | - Rosaria Rucco
- Department of Motor and Wellness Sciences, University of Naples "Parthenope", Naples, Italy.,Institute of Applied Sciences and Intelligent Systems of National Research Council, Pozzuoli, Italy
| | | | - Simona Bonavita
- Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli," Naples, Italy
| | | | - Roberta Minino
- Department of Motor and Wellness Sciences, University of Naples "Parthenope", Naples, Italy
| | - Matteo Pesoli
- Department of Motor and Wellness Sciences, University of Naples "Parthenope", Naples, Italy
| | - Francesca Trojsi
- Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli," Naples, Italy
| | | | - Giuseppe Sorrentino
- Institute of Diagnosis and Treatment Hermitage Capodimonte, Naples, Italy.,Department of Motor and Wellness Sciences, University of Naples "Parthenope", Naples, Italy.,Institute of Applied Sciences and Intelligent Systems of National Research Council, Pozzuoli, Italy
| | - Pierpaolo Sorrentino
- Institute of Applied Sciences and Intelligent Systems of National Research Council, Pozzuoli, Italy.,Department of Engineering, University of Naples "Parthenope", Naples, Italy
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Wosiski-Kuhn M, Caress JB, Cartwright MS, Hawkins GA, Milligan C. Interleukin 6 (IL6) level is a biomarker for functional disease progression within IL6R358Ala variant groups in amyotrophic lateral sclerosis patients. Amyotroph Lateral Scler Frontotemporal Degener 2020; 22:248-259. [DOI: 10.1080/21678421.2020.1813310] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Marlena Wosiski-Kuhn
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - James B. Caress
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA, and
| | - Michael S. Cartwright
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA, and
| | - Gregory A. Hawkins
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Carol Milligan
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Mechanistic Insights of Astrocyte-Mediated Hyperactive Autophagy and Loss of Motor Neuron Function in SOD1 L39R Linked Amyotrophic Lateral Sclerosis. Mol Neurobiol 2020; 57:4117-4133. [PMID: 32676988 DOI: 10.1007/s12035-020-02006-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/26/2020] [Indexed: 12/11/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder with no cure. The reports showed the role of nearby astrocytes around the motor neurons as one among the causes of the disease. However, the exact mechanistic insights are not explored so far. Thus, in the present investigations, we employed the induced pluripotent stem cells (iPSCs) of Cu/Zn-SOD1L39R linked ALS patient to convert them into the motor neurons (MNs) and astrocytes. We report that the higher expression of stress granule (SG) marker protein G3BP1, and its co-localization with the mutated Cu/Zn-SOD1L39R protein in patient's MNs and astrocytes are linked with AIF1-mediated upregulation of caspase 3/7 and hyper activated autophagy. We also observe the astrocyte-mediated non-cell autonomous neurotoxicity on MNs in ALS. The secretome of the patient's iPSC-derived astrocytes exerts significant oxidative stress in MNs. The findings suggest the hyperactive status of autophagy in MNs, as witnessed by the co-distribution of LAMP1, P62 and LC3 I/II with the autolysosomes. Conversely, the secretome of normal astrocytes has shown neuroprotection in patient's iPSC-derived MNs. The whole-cell patch-clamp assay confirms our findings at a physiological functional level in MNs. Perhaps for the first time, we are reporting that the MN degeneration in ALS triggered by the hyper-activation of autophagy and induced apoptosis in both cell-autonomous and non-cell autonomous conditions.
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ALSUntangled 57: Vinpocetine. Amyotroph Lateral Scler Frontotemporal Degener 2020; 22:316-319. [PMID: 32608268 DOI: 10.1080/21678421.2020.1786942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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The Role of Osteopontin in Amyotrophic Lateral Sclerosis: A Systematic Review. ARCHIVES OF NEUROSCIENCE 2020. [DOI: 10.5812/ans.94205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Context: Osteopontin (OPN) is a matrix phosphoprotein expressed by a variety of tissues and cells, including the immune system and the nervous system. Previous studies have shown that OPN may have a role in neurodegenerative diseases, including multiple sclerosis, Parkinson’s disease, and Alzheimer’s disease. Objectives: The present study aimed to systematically review studies investigating the role of OPN in amyotrophic lateral sclerosis (ALS) patients or the disease animal model. Evidence Acquisition: We searched the Cochrane Library, PubMed, Web of Science, and Scopus to find relevant articles published up to January 20, 2019. Both human and animal model studies of ALS were considered. Results: A total of nine articles (four human studies and five animal model studies) were included. Two of the human studies reported that the CSF levels of OPN were higher among ALS patients compared to controls. The other two human studies found that OPN levels in cortical neurons did not differ significantly between ALS cases and the non-neurological control group. One of the studies found that the expression level of OPN in astrocytes was similar between ALS patients and the control group, but the level of microglial OPN significantly increased in ALS cases. Four of the animal model studies reported that the expression of OPN mRNA in spinal cord microglia significantly increased during the disease progression. The remaining animal model study found that OPN was selectively expressed by fast fatigue-resistant and slow motor neurons (MNs), which are resistant to ALS, and that the OPN expression was low among fast-fatigable MNs. Conclusions: Prompt microglial activation is a hallmark pathology of ALS, and OPN is among the most widely expressed proteins by these activated glial cells. Therefore, OPN might have a role in ALS pathogenesis. The existing evidence is not sufficient to justify whether OPN has a neurotoxic or neuroprotective role in ALS. We encourage researchers to investigate the role of OPN in ALS pathogenesis more extensively.
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Natural killer cells modulate motor neuron-immune cell cross talk in models of Amyotrophic Lateral Sclerosis. Nat Commun 2020; 11:1773. [PMID: 32286313 PMCID: PMC7156729 DOI: 10.1038/s41467-020-15644-8] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 03/18/2020] [Indexed: 12/13/2022] Open
Abstract
In amyotrophic lateral sclerosis (ALS), immune cells and glia contribute to motor neuron (MN) degeneration. We report the presence of NK cells in post-mortem ALS motor cortex and spinal cord tissues, and the expression of NKG2D ligands on MNs. Using a mouse model of familial-ALS, hSOD1G93A, we demonstrate NK cell accumulation in the motor cortex and spinal cord, with an early CCL2-dependent peak. NK cell depletion reduces the pace of MN degeneration, delays motor impairment and increases survival. This is confirmed in another ALS mouse model, TDP43A315T. NK cells are neurotoxic to hSOD1G93A MNs which express NKG2D ligands, while IFNγ produced by NK cells instructs microglia toward an inflammatory phenotype, and impairs FOXP3+/Treg cell infiltration in the spinal cord of hSOD1G93A mice. Together, these data suggest a role of NK cells in determining the onset and progression of MN degeneration in ALS, and in modulating Treg recruitment and microglia phenotype. Neuroimmune interactions are important in amyotrophic lateral sclerosis (ALS). Here the authors characterize the role of NK cells in mouse models of ALS, and in patient tissue.
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Jin M, Günther R, Akgün K, Hermann A, Ziemssen T. Peripheral proinflammatory Th1/Th17 immune cell shift is linked to disease severity in amyotrophic lateral sclerosis. Sci Rep 2020; 10:5941. [PMID: 32246039 PMCID: PMC7125229 DOI: 10.1038/s41598-020-62756-8] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 03/18/2020] [Indexed: 12/11/2022] Open
Abstract
Neuroinflammation is involved in the pathogenesis of amyotrophic lateral sclerosis (ALS), but only limited data are available on systematic peripheral and central immune cell profiles in ALS. We studied detailed immune profiles of 73 ALS patients and 48 healthy controls (controls) in peripheral blood by fluorescence-activated cell sorting as well as cytokine expression profiles in serum. In a subgroup of 16 ALS patients and 10 controls we additionally studied cerebrospinal fluid (CSF) samples. In peripheral blood, T cell subtypes presented a shift towards pro-inflammatory Th 1 and Th 17 cells whereas anti-inflammatory Th2 and T regulatory cells were decreased. Important players in innate immunity including distinct monocyte (Mo) and natural killer (NK) cell subtypes were changed in ALS patients compared to controls. Pro-inflammatory serum cytokines such as interleukin (IL)-1 beta, IL-6 and interferon-gamma (IFN-gamma) were increased and the anti-inflammatory cytokine IL-10 was decreased. Correlation analysis revealed moderate negative correlations between Th1 and Th17 to the ALS functional rating scale revised (ALSFRS-R) and to forced vital capacity. In CSF samples, no relevant alteration of the immune profile was found. In conclusion, the immune profile in ALS was shifted towards a Th1/Th17 cell-mediated pro-inflammatory immune response and correlated to disease severity and progression. Large prospective studies are needed to confirm these findings.
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Affiliation(s)
- Mengmeng Jin
- Department of Neurology, Technische Universität Dresden, Dresden, Germany.,Center for Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Rene Günther
- Department of Neurology, Technische Universität Dresden, Dresden, Germany. .,German Center for Neurodegenerative Diseases (DZNE), Dresden, Germany.
| | - Katja Akgün
- Department of Neurology, Technische Universität Dresden, Dresden, Germany.,Center for Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Andreas Hermann
- Department of Neurology, Technische Universität Dresden, Dresden, Germany.,German Center for Neurodegenerative Diseases (DZNE), Dresden, Germany.,Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany.,German Center for Neurodegenerative Diseases (DZNE) Rostock/Greifswald, Rostock, Germany
| | - Tjalf Ziemssen
- Department of Neurology, Technische Universität Dresden, Dresden, Germany.,Center for Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden, Germany
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Local and Systemic Humoral Response to Autologous Lineage-Negative Cells Intrathecal Administration in ALS Patients. Int J Mol Sci 2020; 21:ijms21031070. [PMID: 32041109 PMCID: PMC7037134 DOI: 10.3390/ijms21031070] [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: 12/31/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 01/04/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) remains a fatal disease with limited therapeutic options. Signaling via neurotrophins (NTs), neuroinflammation, and certain micro-RNAs are believed to play essential role in ALS pathogenesis. Lineage-negative stem/progenitor cells (Lin−) were obtained from bone marrow of 18 ALS patients and administered intrathecally. Clinical assessment was performed using ALS Functional Rating Scale (FRSr) and Norris scale. Protein concentrations were measured in plasma and cerebrospinal fluid (CSF) by multiplex fluorescent bead-based immunoassay. Gene expression in nucleated blood cells was assessed using gene microarray technique. Finally, miRNA expression was analyzed using qPCR in CSF and plasma samples. We observed a significant decrease of C-reactive protein (CRP) concentration in plasma on the seventh day from the application of cells. Gene array results revealed decreased expression of gene sets responsible for neutrophil activation. Further analysis revealed moderate negative correlation between CRP level in CSF and clinical outcome. Brain-derived neurotrophic factor (BDNF) concentrations in both plasma and CSF significantly correlated with the favorable clinical outcome. On a micro-RNA level, we observed significant increase of miR-16-5p expression one week after transplantation in both body fluids and significant increase of miR-206 expression in plasma. Administration of Lin− cells may decrease inflammatory response and prevent neurodegeneration. However, these issues require further investigations.
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Cai M, Yang EJ. Hochu-Ekki-To Improves Motor Function in an Amyotrophic Lateral Sclerosis Animal Model. Nutrients 2019; 11:nu11112644. [PMID: 31689925 PMCID: PMC6893748 DOI: 10.3390/nu11112644] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 12/12/2022] Open
Abstract
Hochu-ekki-to (Bojungikgi-Tang (BJIGT) in Korea; Bu-Zhong-Yi-Qi Tang in Chinese), a traditional herbal prescription, has been widely used in Asia. Hochu-ekki-to (HET) is used to enhance the immune system in respiratory disorders, improve the nutritional status associated with chronic diseases, enhance the mucosal immune system, and improve learning and memory. Amyotrophic lateral sclerosis (ALS) is pathologically characterized by motor neuron cell death and muscle paralysis, and is an adult-onset motor neuron disease. Several pathological mechanisms of ALS have been reported by clinical and in vitro/in vivo studies using ALS models. However, the underlying mechanisms remain elusive, and the critical pathological target needs to be identified before effective drugs can be developed for patients with ALS. Since ALS is a disease involving both motor neuron death and skeletal muscle paralysis, suitable therapy with optimal treatment effects would involve a motor neuron target combined with a skeletal muscle target. Herbal medicine is effective for complex diseases because it consists of multiple components for multiple targets. Therefore, we investigated the effect of the herbal medicine HET on motor function and survival in hSOD1G93A transgenic mice. HET was orally administered once a day for 6 weeks from the age of 2 months (the pre-symptomatic stage) of hSOD1G93A transgenic mice. We used the rota-rod test and foot printing test to examine motor activity, and Western blotting and H&E staining for evaluation of the effects of HET in the gastrocnemius muscle and lumbar (L4–5) spinal cord of mice. We found that HET treatment dramatically inhibited inflammation and oxidative stress both in the spinal cord and gastrocnemius of hSOD1G93A transgenic mice. Furthermore, HET treatment improved motor function and extended the survival of hSOD1G93A transgenic mice. Our findings suggest that HET treatment may modulate the immune reaction in muscles and neurons to delay disease progression in a model of ALS.
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Affiliation(s)
- Mudan Cai
- Department of Herbal medicine Research, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon 305-811, Korea.
| | - Eun Jin Yang
- Department of Clinical Research, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon 305-811, Korea.
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Wosiski-Kuhn M, Robinson M, Strupe J, Arounleut P, Martin M, Caress J, Cartwright M, Bowser R, Cudkowicz M, Langefeld C, Hawkins GA, Milligan C. IL6 receptor 358Ala variant and trans-signaling are disease modifiers in amyotrophic lateral sclerosis. NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2019; 6:e631. [PMID: 31611269 PMCID: PMC6865852 DOI: 10.1212/nxi.0000000000000631] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 08/28/2019] [Indexed: 12/12/2022]
Abstract
Objective To test the hypothesis that patients with amyotrophic lateral sclerosis (ALS) inheriting the common interleukin 6 receptor (IL6R) coding variant (Asp358Ala, rs2228145, C allele) have associated increases in interleukin 6 (IL6) and IL6R levels in serum and CSF and faster disease progression than noncarriers. Methods An observational, case-control study of paired serum and CSF of 47 patients with ALS, 46 healthy, and 23 neurologic disease controls from the Northeastern ALS Consortium Biofluid Repository (cohort 1) was performed to determine serum levels of IL6, sIL6R, and soluble glycoprotein 130 and compared across groups and IL6R genotype. Clinical data regarding disease progression from a separate cohort of 35 patients with ALS from the Wake Forest ALS Center (cohort 2) were used to determine change in ALSFRS-R scores by genotype. Results Patients with ALS had increased CSF IL6 levels compared with healthy (p < 0.001) and neurologic (p = 0.021) controls. Patients with ALS also had increased serum IL6 compared with healthy (p = 0.040) but not neurologic controls. Additive allelic increases in serum IL6R were observed in all groups (average increase of 52% with the presence of the IL6R C allele; p < 0.001). However, only subjects with ALS had significantly increased CSF sIL6R levels compared with controls (p < 0.001). When compared across genotypes, only patients with ALS inheriting the IL6R C allele exhibit increased CSF IL6. ALSFRS-R scores decreased more in patients with ALS with the IL6R C allele than in those without (p = 0.019). Conclusions Theses results suggest that for individuals inheriting the IL6R C allele, the cytokine exerts a disease- and location-specific role in ALS. Follow-up, prospective studies are necessary, as this subgroup of patients may be identified as ideally responsive to IL6 receptor–blocking therapies.
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Affiliation(s)
- Marlena Wosiski-Kuhn
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Mac Robinson
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Jane Strupe
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Phonepasong Arounleut
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Matthew Martin
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - James Caress
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Michael Cartwright
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Robert Bowser
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Merit Cudkowicz
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Carl Langefeld
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Gregory A Hawkins
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH
| | - Carol Milligan
- From the Department of Neurobiology and Anatomy (M.W.-K., M.R., J.S., P.A., M.M., C.M.); Department of Neurology (J.C., M. Cartwright); and Department of Biochemistry (G.A.H.), Wake Forest School of Medicine; Division of Public Health (C.L.), Department of Biostatistical Sciences, Wake Forest School of Medicine; Departments of Neurology and Neurobiology (R.B.), Barrow Neurological Institute & St. Joseph's Hospital and Medical Center; Department of Neurology (M. Cudkowicz), Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School; and Current Address Department of Pediatrics (M.M.), Nationwide Children's Hospital, Columbus OH.
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Lyon MS, Milligan C. Extracellular heat shock proteins in neurodegenerative diseases: New perspectives. Neurosci Lett 2019; 711:134462. [PMID: 31476356 DOI: 10.1016/j.neulet.2019.134462] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/23/2019] [Accepted: 08/24/2019] [Indexed: 01/20/2023]
Abstract
One pathological hallmark of neurodegenerative diseases and CNS trauma is accumulation of insoluble, hydrophobic molecules and protein aggregations found both within and outside cells. These may be the consequences of an inadequate or overburdened cellular response to stresses resulting from potentially toxic changes in extra- and intracellular environments. The upregulated expression of heat shock proteins (HSPs) is one example of a highly conserved cellular response to both internal and external stress. Intracellularly these proteins act as chaperones, playing vital roles in the folding of nascent polypeptides, the translocation of proteins between subcellular locations, and the disaggregation of misfolded or aggregated proteins in an attempt to maintain cellular proteostasis during both homeostatic and stressful conditions. While the predominant study of the HSPs has focused on their intracellular chaperone functions, it remains unclear if all neuronal populations can mount a complete stress response. Alternately, it is now well established that some members of this family of proteins can be secreted by nearby, non-neuronal cells to act in the extracellular environment. This review addresses the current literature detailing the use of exogenous and extracellular HSPs in the treatment of cellular and animal models of neurodegenerative disease. These findings offer a new measure of therapeutic potential to the HSPs, but obstacles must be overcome before they can be efficiently used in a clinical setting.
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Affiliation(s)
- Miles S Lyon
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Carol Milligan
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States.
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ALSUntangled No. 50: Antifungal Therapy. Amyotroph Lateral Scler Frontotemporal Degener 2019; 20:625-629. [PMID: 31155963 DOI: 10.1080/21678421.2019.1622197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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65
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MacLean M, Derk J, Ruiz HH, Juranek JK, Ramasamy R, Schmidt AM. The Receptor for Advanced Glycation End Products (RAGE) and DIAPH1: Implications for vascular and neuroinflammatory dysfunction in disorders of the central nervous system. Neurochem Int 2019; 126:154-164. [PMID: 30902646 PMCID: PMC10976457 DOI: 10.1016/j.neuint.2019.03.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/13/2019] [Accepted: 03/16/2019] [Indexed: 12/11/2022]
Abstract
The Receptor for Advanced Glycation End Products (RAGE) is expressed by multiple cell types in the brain and spinal cord that are linked to the pathogenesis of neurovascular and neurodegenerative disorders, including neurons, glia (microglia and astrocytes) and vascular cells (endothelial cells, smooth muscle cells and pericytes). Mounting structural and functional evidence implicates the interaction of the RAGE cytoplasmic domain with the formin, Diaphanous1 (DIAPH1), as the key cytoplasmic hub for RAGE ligand-mediated activation of cellular signaling. In aging and diabetes, the ligands of the receptor abound, both in the central nervous system (CNS) and in the periphery. Such accumulation of RAGE ligands triggers multiple downstream events, including upregulation of RAGE itself. Once set in motion, cell intrinsic and cell-cell communication mechanisms, at least in part via RAGE, trigger dysfunction in the CNS. A key outcome of endothelial dysfunction is reduction in cerebral blood flow and increased permeability of the blood brain barrier, conditions that facilitate entry of activated leukocytes into the CNS, thereby amplifying primary nodes of CNS cellular stress. This contribution details a review of the ligands of RAGE, the mechanisms and consequences of RAGE signal transduction, and cites multiple examples of published work in which RAGE contributes to the pathogenesis of neurovascular perturbation. Insights into potential therapeutic modalities targeting the RAGE signal transduction axis for disorders of CNS vascular dysfunction and neurodegeneration are also discussed.
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Affiliation(s)
- Michael MacLean
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Julia Derk
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Henry H Ruiz
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Judyta K Juranek
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA.
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Lipopolysaccharide-Induced Neuroinflammation as a Bridge to Understand Neurodegeneration. Int J Mol Sci 2019; 20:ijms20092293. [PMID: 31075861 PMCID: PMC6539529 DOI: 10.3390/ijms20092293] [Citation(s) in RCA: 287] [Impact Index Per Article: 57.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/03/2019] [Accepted: 05/05/2019] [Indexed: 12/19/2022] Open
Abstract
A large body of experimental evidence suggests that neuroinflammation is a key pathological event triggering and perpetuating the neurodegenerative process associated with many neurological diseases. Therefore, different stimuli, such as lipopolysaccharide (LPS), are used to model neuroinflammation associated with neurodegeneration. By acting at its receptors, LPS activates various intracellular molecules, which alter the expression of a plethora of inflammatory mediators. These factors, in turn, initiate or contribute to the development of neurodegenerative processes. Therefore, LPS is an important tool for the study of neuroinflammation associated with neurodegenerative diseases. However, the serotype, route of administration, and number of injections of this toxin induce varied pathological responses. Thus, here, we review the use of LPS in various models of neurodegeneration as well as discuss the neuroinflammatory mechanisms induced by this toxin that could underpin the pathological events linked to the neurodegenerative process.
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