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Li Q, Lan X, Han X, Durham F, Wan J, Weiland A, Koehler RC, Wang J. Microglia-derived interleukin-10 accelerates post-intracerebral hemorrhage hematoma clearance by regulating CD36. Brain Behav Immun 2021; 94:437-457. [PMID: 33588074 PMCID: PMC8058329 DOI: 10.1016/j.bbi.2021.02.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/13/2020] [Accepted: 02/06/2021] [Indexed: 12/19/2022] Open
Abstract
Hematoma size after intracerebral hemorrhage (ICH) significantly affects patient outcome. However, our knowledge of endogenous mechanisms that underlie hematoma clearance and the potential role of the anti-inflammatory cytokine interleukin-10 (IL-10) is limited. Using organotypic hippocampal slice cultures and a collagenase-induced ICH mouse model, we investigated the role of microglial IL-10 in phagocytosis ex vivo and hematoma clearance in vivo. In slice culture, exposure to hemoglobin induced IL-10 expression in microglia and enhanced phagocytosis that depended on IL-10-regulated expression of CD36. Following ICH, IL-10-deficient mice had more severe neuroinflammation, brain edema, iron deposition, and neurologic deficits associated with delayed hematoma clearance. Intranasal administration of recombinant IL-10 accelerated hematoma clearance and improved neurologic function. Additionally, IL-10-deficient mice had weakened in vivo phagocytic ability owing to decreased expression of microglial CD36. Moreover, loss of IL-10 significantly increased monocyte-derived macrophage infiltration and enhanced brain inflammation in vivo. These results indicate that IL-10 regulates microglial phagocytosis and monocyte-derived macrophage infiltration after ICH and that CD36 is a key phagocytosis effector regulated by IL-10. Leveraging the innate immune response to ICH by augmenting IL-10 signaling may provide a useful strategy for accelerating hematoma clearance and improving neurologic outcome in clinical translation studies.
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Affiliation(s)
| | | | | | | | | | | | - Raymond C. Koehler
- Corresponding author at: Department of
Anesthesiology and Critical Care Medicine, The Johns Hopkins University School
of Medicine, 600 North Wolfe Street Blalock 1404, Baltimore, MD 21287, USA,
(R.C. Koehler)
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Royds J, Cassidy H, Conroy MJ, Dunne MR, Lysaght J, McCrory C. Examination and characterisation of the effect of amitriptyline therapy for chronic neuropathic pain on neuropeptide and proteomic constituents of human cerebrospinal fluid. Brain Behav Immun Health 2021; 10:100184. [PMID: 34589721 PMCID: PMC8474617 DOI: 10.1016/j.bbih.2020.100184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/11/2020] [Accepted: 12/03/2020] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION Amitriptyline is prescribed to reduce the intensity of chronic neuropathic pain. There is a paucity of validated in vivo evidence in humans regarding amitriptyline's mechanism of action. We examined the effect of amitriptyline therapy on cerebrospinal fluid (CSF) neuropeptides and proteome in patients with chronic neuropathic pain to identify potential mechanisms of action of amitriptyline. METHODS Patients with lumbar radicular neuropathic pain were selected for inclusion with clinical and radiological signs and a >50% reduction in pain in response to a selective nerve root block. Baseline (pre-treatment) and 8-week (post-treatment) pain scores with demographics were recorded. CSF samples were taken at baseline (pre-treatment) and 8 weeks after amitriptyline treatment (post-treatment). Proteome analysis was performed using mass spectrometry and secreted cytokines, chemokines and neurotrophins were measured by enzyme-linked immunosorbent assay (ELISA). RESULTS A total of 9/16 patients experienced a >30% reduction in pain after treatment with amitriptyline and GO analysis demonstrated that the greatest modulatory effect was on immune system processes. KEGG analysis also identified a reduction in PI3K-Akt and MAPK signalling pathways in responders but not in non-responders. There was also a significant decrease in the chemokine eotaxin-1 (p = 0.02) and a significant increase in the neurotrophin VEGF-A (p = 0.04) in responders. CONCLUSION The CSF secretome and proteome was modulated in responders to amitriptyline verifying many pre-clinical and in vitro models. The predominant features were immunomodulation with a reduction in pro-inflammatory pathways of neuronal-glia communications and evidence of a neurotrophic effect.
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Affiliation(s)
- Jonathan Royds
- Department of Pain Medicine, St. James Hospital, Dublin and School of Medicine, Trinity College Dublin, Ireland
| | - Hilary Cassidy
- Systems Biology Ireland, School of Medicine, University College Dublin, Dublin 4, Ireland
| | - Melissa J. Conroy
- Department of Surgery, Trinity Translational Medicine Institute, St. James’s Hospital and Trinity College Dublin, Dublin 8, Ireland
- Trinity St James’s Cancer Institute, St James’s Hospital Dublin, Dublin 8, Ireland
| | - Margaret R. Dunne
- Department of Surgery, Trinity Translational Medicine Institute, St. James’s Hospital and Trinity College Dublin, Dublin 8, Ireland
- Trinity St James’s Cancer Institute, St James’s Hospital Dublin, Dublin 8, Ireland
| | - Joanne Lysaght
- Department of Surgery, Trinity Translational Medicine Institute, St. James’s Hospital and Trinity College Dublin, Dublin 8, Ireland
- Trinity St James’s Cancer Institute, St James’s Hospital Dublin, Dublin 8, Ireland
| | - Connail McCrory
- Department of Pain Medicine, St. James Hospital, Dublin and School of Medicine, Trinity College Dublin, Ireland
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Cherry JD, Meng G, Daley S, Xia W, Svirsky S, Alvarez VE, Nicks R, Pothast M, Kelley H, Huber B, Tripodis Y, Alosco ML, Mez J, McKee AC, Stein TD. CCL2 is associated with microglia and macrophage recruitment in chronic traumatic encephalopathy. J Neuroinflammation 2020; 17:370. [PMID: 33278887 PMCID: PMC7718711 DOI: 10.1186/s12974-020-02036-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022] Open
Abstract
Background Neuroinflammation has been implicated in the pathogenesis of chronic traumatic encephalopathy (CTE), a progressive neurodegenerative disease association with exposure to repetitive head impacts (RHI) received though playing contact sports such as American football. Past work has implicated early and sustained activation of microglia as a potential driver of tau pathology within the frontal cortex in CTE. However, the RHI induced signals required to recruit microglia to areas of damage and pathology are unknown. Methods Postmortem brain tissue was obtained from 261 individuals across multiple brain banks. Comparisons were made using cases with CTE, cases with Alzheimer’s disease (AD), and cases with no neurodegenerative disease and lacked exposure to RHI (controls). Recruitment of Iba1+ cells around the CTE perivascular lesion was compared to non-lesion vessels. TMEM119 staining was used to characterize microglia or macrophage involvement. The potent chemoattractant CCL2 was analyzed using frozen tissue from the dorsolateral frontal cortex (DLFC) and the calcarine cortex. Finally, the amounts of hyperphosphorylated tau (pTau) and Aβ42 were compared to CCL2 levels to examine possible mechanistic pathways. Results An increase in Iba1+ cells was found around blood vessels with perivascular tau pathology compared to non-affected vessels in individuals with RHI. TMEM119 staining revealed the majority of the Iba1+ cells were microglia. CCL2 protein levels in the DLFC were found to correlate with greater years of playing American football, the density of Iba1+ cells, the density of CD68+ cells, and increased CTE severity. When comparing across multiple brain regions, CCL2 increases were more pronounced in the DLFC than the calcarine cortex in cases with RHI but not in AD. When examining the individual contribution of pathogenic proteins to CCL2 changes, pTau correlated with CCL2, independent of age at death and Aβ42 in AD and CTE. Although levels of Aβ42 were not correlated with CCL2 in cases with CTE, in males in the AD group, Aβ42 trended toward an inverse relationship with CCL2 suggesting possible gender associations. Conclusion Overall, CCL2 is implicated in the pathways recruiting microglia and the development of pTau pathology after exposure to RHI, and may represent a future therapeutic target in CTE.
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Affiliation(s)
- Jonathan D Cherry
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA. .,Department of Neurology, Boston University School of Medicine, Boston, MA, USA. .,Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA. .,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA.
| | - Gaoyuan Meng
- Department of Veterans Affairs Medical Center, Bedford, MA, USA
| | - Sarah Daley
- Department of Veterans Affairs Medical Center, Bedford, MA, USA.,Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA
| | - Weiming Xia
- Department of Veterans Affairs Medical Center, Bedford, MA, USA.,Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA
| | - Sarah Svirsky
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA.,Department of Veterans Affairs Medical Center, Bedford, MA, USA
| | - Victor E Alvarez
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA.,Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA.,Department of Veterans Affairs Medical Center, Bedford, MA, USA
| | - Raymond Nicks
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA.,Department of Veterans Affairs Medical Center, Bedford, MA, USA
| | - Morgan Pothast
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA.,Department of Veterans Affairs Medical Center, Bedford, MA, USA
| | - Hunter Kelley
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA
| | - Bertrand Huber
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA.,Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA.,National Center for PTSD, VA Boston Healthcare System, Boston, MA, USA
| | - Yorghos Tripodis
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,Department of Biostatistics, Boston University School of Medicine, Boston, MA, USA
| | - Michael L Alosco
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA.,Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA
| | - Jesse Mez
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA.,Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA
| | - Ann C McKee
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA.,Department of Neurology, Boston University School of Medicine, Boston, MA, USA.,Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA.,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA.,Department of Veterans Affairs Medical Center, Bedford, MA, USA
| | - Thor D Stein
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA. .,Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA. .,VA Boston Healthcare System, Jamaica Plain, 150 S Huntington Ave, Boston, MA, 02130, USA. .,Department of Veterans Affairs Medical Center, Bedford, MA, USA.
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Kang JS, Yang YR. Circulating plasma factors involved in rejuvenation. Aging (Albany NY) 2020; 12:23394-23408. [PMID: 33197235 PMCID: PMC7746393 DOI: 10.18632/aging.103933] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 07/30/2020] [Indexed: 12/17/2022]
Abstract
Aging is defined as a time-dependent functional decline that occurs in many physiological systems. This decline is the primary risk factor for prominent human pathologies such as cancer, metabolic disorders, cardiovascular disorders, and neurodegenerative diseases. Aging and age-related diseases have multiple causes. Parabiosis experiments, in which the circulatory systems of young and old mice were surgically joined, revealed that young plasma counteracts aging and rejuvenates organs in old mice, suggesting the existence of rejuvenating factors that become less abundant with aging. Diverse approaches have identified a large number of plasma proteins whose levels differ significantly between young and old mice, as well as numerous rejuvenating factors that reverse aged-related impairments in multiple tissues. These observations suggest that increasing the levels of key rejuvenating factors could promote restorative biological processes or inhibit pathological degeneration. Inspired by such findings, several companies have begun selling “young blood transfusions,” and others have tested young plasma as a treatment for Alzheimer’s disease. Here, we summarize the current findings regarding rejuvenating factors.
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Affiliation(s)
- Jae Sook Kang
- Aging Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Yong Ryoul Yang
- Aging Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
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Acute Time-Course Changes in CCL11, CCL2, and IL-10 Levels After Controlled Subconcussive Head Impacts: A Pilot Randomized Clinical Trial. J Head Trauma Rehabil 2020; 35:308-316. [PMID: 32881764 DOI: 10.1097/htr.0000000000000597] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To examine changes in plasma levels of CCL11, CCL2, and IL-10 after 10 controlled soccer headers. SETTING Laboratory setting. PARTICIPANTS Thirty-nine healthy soccer players with at least 3 years of soccer heading experience, between 18 and 26 years old, and enrolled at a large public university. DESIGN In this randomized clinical trial using a soccer heading model, participants were randomized into the heading (n = 22) or kicking-control (n = 17) groups to perform 10 headers or kicks. MAIN MEASURES Plasma levels of CCL11, CCL2, and IL-10 at preintervention and 0, 2, and 24 hours postintervention. RESULTS Mixed-effects regression models did not reveal any significant group differences in changes of plasma CCL11, CCL2, or IL-10 levels from preintervention. Within the heading group, there was a statistically significant time by years of heading experience interaction with 2.0-pg/mL increase in plasma CCL11 each year of prior experience at 24 hours postintervention (P = .001). CONCLUSION Findings from this study suggest that 10 soccer headers do not provoke an acute inflammatory response. However, the acute CCL11 response may be influenced by prior exposure to soccer headers, providing a precedent for future field studies that prospectively track head impact exposure and changes in CCL11.
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CCL-11 or Eotaxin-1: An Immune Marker for Ageing and Accelerated Ageing in Neuro-Psychiatric Disorders. Pharmaceuticals (Basel) 2020; 13:ph13090230. [PMID: 32887304 PMCID: PMC7558796 DOI: 10.3390/ph13090230] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/27/2020] [Accepted: 08/31/2020] [Indexed: 12/16/2022] Open
Abstract
Background: CCL-11 (eotaxin) is a chemokine with an important role in allergic conditions. Recent evidence indicates that CCL-11 plays a role in brain disorders as well. This paper reviews the associations between CCL-11 and aging, neurodegenerative, neuroinflammatory and neuropsychiatric disorders. Methods: Electronic databases were searched for original articles examining CCL-11 in neuropsychiatric disorders. Results: CCL-11 is rapidly transported from the blood to the brain through the blood-brain barrier. Age-related increases in CCL-11 are associated with cognitive impairments in executive functions and episodic and semantic memory, and therefore, this chemokine has been described as an “Endogenous Cognition Deteriorating Chemokine” (ECDC) or “Accelerated Brain-Aging Chemokine” (ABAC). In schizophrenia, increased CCL-11 is not only associated with impairments in cognitive functions, but also with key symptoms including formal thought disorders. Some patients with mood disorders and premenstrual syndrome show increased plasma CCL-11 levels. In diseases of old age, CCL-11 is associated with lowered neurogenesis and neurodegenerative processes, and as a consequence, increased CCL-11 increases risk towards Alzheimer’s disease. Polymorphisms in the CCL-11 gene are associated with stroke. Increased CCL-11 also plays a role in neuroinflammatory disease including multiple sclerosis. In animal models, neutralization of CCL-11 may protect against nigrostriatal neurodegeneration. Increased production of CCL-11 may be attenuated by glucocorticoids, minocycline, resveratrol and anti-CCL11 antibodies. Conclusions: Increased CCL-11 production during inflammatory conditions may play a role in human disease including age-related cognitive decline, schizophrenia, mood disorders and neurodegenerative disorders. Increased CCL-11 production is a new drug target in the treatment and prevention of those disorders.
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Moghadam-Ahmadi A, Khorramdelazad H, Hassanshahi G, Shahsavari S, Moadab A, Vakilian A. Eotaxins and C-C chemokine receptor type 3 in Parkinson's disease. Acta Neurol Belg 2020; 120:589-594. [PMID: 30547375 DOI: 10.1007/s13760-018-01061-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 12/07/2018] [Indexed: 12/12/2022]
Abstract
Parkinson's disease (PD) is one of the most common neuroinflammatory disorders and inflammatory processes seem to play an important role in the pathogenesis of PD. Chemokines as inflammatory mediators, which are involved in the recruitment of leukocytes, can play a role in the pathogenesis of PD. The aim of this study was to examine the serum level of eotaxins (CCL11, CCL24, and CCL26) and the expression of C-C chemokine receptor type 3 (CCR3) in patients with PD compared with healthy subjects. In this study, we measured the serum levels of CCL11, CCL24, and CCL26 with ELISA. In addition, gene and protein expression of CCR3 were measured by RT-PCR and flow cytometry techniques in PD patients (n = 30) and age- and sex-matched healthy subjects (n = 30). All patients suffering from PD were assessed clinically through Unified Parkinson's Disease Rating Scale, Motor Examination (UPDRS ME). The results of this study showed that there was no significant alteration in the serum level of these chemokines and also their receptor among patients with PD and healthy subjects. No significant correlation was observed between the eotaxins serum levels and the clinical measures of PD severity. Based on the results, it can be concluded that eotaxins cannot be considered as appropriate targets for the diagnosis or treatment of PD.
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Hiskens MI, Schneiders AG, Angoa-Pérez M, Vella RK, Fenning AS. Blood biomarkers for assessment of mild traumatic brain injury and chronic traumatic encephalopathy. Biomarkers 2020; 25:213-227. [PMID: 32096416 DOI: 10.1080/1354750x.2020.1735521] [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: 12/13/2022]
Abstract
Mild traumatic brain injuries (mTBI) are prevalent and can result in significant debilitation. Current diagnostic methods have implicit limitations, with clinical assessment tools reliant on subjective self-reported symptoms or non-specific clinical observations, and commonly available imaging techniques lacking sufficient sensitivity to detect mTBI. A blood biomarker would provide a readily accessible detector of mTBI to meet the current measurement gap. Suitable options would provide objective and quantifiable information in diagnosing mTBI, in monitoring recovery, and in establishing a prognosis of resultant neurodegenerative disease, such as chronic traumatic encephalopathy (CTE). A biomarker would also assist in progressing research, providing suitable endpoints for testing therapeutic modalities and for further exploring mTBI pathophysiology. This review highlights the most promising blood-based protein candidates that are expressed in the central nervous system (CNS) and released into systemic circulation following mTBI. To date, neurofilament light (NF-L) may be the most suitable candidate for assessing neuronal damage, and glial fibrillary acidic protein (GFAP) for assessing astrocyte activation, although further work is required. Ultimately, the heterogeneity of cells in the brain and each marker's limitations may require a combination of biomarkers, and recent developments in microRNA (miRNA) markers of mTBI show promise and warrant further exploration.
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Affiliation(s)
- Matthew I Hiskens
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, Australia
| | - Anthony G Schneiders
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, Australia
| | - Mariana Angoa-Pérez
- Research and Development Service, John D. Dingell VA Medical Center, Detroit, MI, USA.,Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA
| | - Rebecca K Vella
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, Australia
| | - Andrew S Fenning
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, Australia
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Shimada A. Principles of neuroanatomical architecture supporting brain–immune cell–cell interactions. ACTA ACUST UNITED AC 2020. [DOI: 10.1111/cen3.12559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Wuda granule, a traditional Chinese herbal medicine, ameliorates postoperative ileus by anti-inflammatory action. Pathol Res Pract 2020; 216:152605. [PMID: 31974003 DOI: 10.1016/j.prp.2019.152605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 08/04/2019] [Accepted: 08/18/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Postoperative ileus (POI) is a temporary disturbance in gastrointestinal motility following surgery, and intestinal inflammatory response plays a critical role in the pathogenesis of POI. Wuda granule (WDG), a gastrointestinal prokinetic Chinese herbal medicine, is prescribed to promote recovery of gastrointestinal function after abdominal surgery. However, it has remained unclear whether WDG shows anti-inflammatory effects in POI. In the present study, we investigated the effects of WDG in a rat POI model and attempted to clarify the detailed mechanisms of action. METHOD Experimental POI was induced in adult male SD rats by intestinal manipulation (IM). WDG were orally administered after surgery at the same points (6 h, 12 h, 18 h, 24 h). Histological changes of mesenterium, levels of cytokines, and CD68 and iNOS expression were determined in rats treated or not with WDG. We also investigated the transcriptome profile of rats treated with WDG in a POI model. RESULTS Experimental POI in rats was characterized by a marked intestinal and systemic inflammatory response. WDG significantly inhibited the infiltration of neutrophils and macrophages, reduced the levels of IL-6, and CRP, and inhibited protein expressions of CD68 and iNOS in mesentery. Comparison analysis showed that there are 1432 differentially expressed genes (DEGs) between the POI and CON sample, whereas 331 DEGs between the WDG -treated sample and the POI group. And 16 DEGs were shared by the POI vs CON and WDG vs POI groups, among which 6 hub genes associated with immune system processes were identified and verified. CONCLUSIONS WDG treatment ameliorates the impaired gastrointestinal motility in the rat model of POI through inhibiting the inflammatory response of mesentery.
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Chamera K, Trojan E, Szuster-Głuszczak M, Basta-Kaim A. The Potential Role of Dysfunctions in Neuron-Microglia Communication in the Pathogenesis of Brain Disorders. Curr Neuropharmacol 2020; 18:408-430. [PMID: 31729301 PMCID: PMC7457436 DOI: 10.2174/1570159x17666191113101629] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/15/2019] [Accepted: 11/10/2019] [Indexed: 12/18/2022] Open
Abstract
The bidirectional communication between neurons and microglia is fundamental for the proper functioning of the central nervous system (CNS). Chemokines and clusters of differentiation (CD) along with their receptors represent ligand-receptor signalling that is uniquely important for neuron - microglia communication. Among these molecules, CX3CL1 (fractalkine) and CD200 (OX-2 membrane glycoprotein) come to the fore because of their cell-type-specific localization. They are principally expressed by neurons when their receptors, CX3CR1 and CD200R, respectively, are predominantly present on the microglia, resulting in the specific axis which maintains the CNS homeostasis. Disruptions to this balance are suggested as contributors or even the basis for many neurological diseases. In this review, we discuss the roles of CX3CL1, CD200 and their receptors in both physiological and pathological processes within the CNS. We want to underline the critical involvement of these molecules in controlling neuron - microglia communication, noting that dysfunctions in their interactions constitute a key factor in severe neurological diseases, such as schizophrenia, depression and neurodegeneration-based conditions.
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Affiliation(s)
- Katarzyna Chamera
- Department of Experimental Neuroendocrinology, Laboratory of Immunoendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St. 31-343Kraków, Poland
| | - Ewa Trojan
- Department of Experimental Neuroendocrinology, Laboratory of Immunoendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St. 31-343Kraków, Poland
| | - Magdalena Szuster-Głuszczak
- Department of Experimental Neuroendocrinology, Laboratory of Immunoendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St. 31-343Kraków, Poland
| | - Agnieszka Basta-Kaim
- Department of Experimental Neuroendocrinology, Laboratory of Immunoendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St. 31-343Kraków, Poland
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CCL11 Differentially Affects Post-Stroke Brain Injury and Neuroregeneration in Mice Depending on Age. Cells 2019; 9:cells9010066. [PMID: 31888056 PMCID: PMC7017112 DOI: 10.3390/cells9010066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/11/2019] [Accepted: 12/24/2019] [Indexed: 12/14/2022] Open
Abstract
CCL11 has recently been shown to differentially affect cell survival under various pathological conditions including stroke. Indeed, CCL11 promotes neuroregeneration in neonatal stroke mice. The impact of CCL11 on the adult ischemic brain, however, remains elusive. We therefore studied the effect of ectopic CCL11 on both adolescent (six-week) and adult (six-month) C57BL6 mice exposed to stroke. Intraperitoneal application of CCL11 significantly aggravated acute brain injury in adult mice but not in adolescent mice. Likewise, post-stroke neurological recovery after four weeks was significantly impaired in adult mice whilst CCL11 was present. On the contrary, CCL11 stimulated gliogenesis and neurogenesis in adolescent mice. Flow cytometry analysis of blood and brain samples revealed a modification of inflammation by CCL11 at subacute stages of the disease. In adolescent mice, CCL11 enhances microglial cell, B and T lymphocyte migration towards the brain, whereas only the number of B lymphocytes is increased in the adult brain. Finally, the CCL11 inhibitor SB297006 significantly reversed the aforementioned effects. Our study, for the first time, demonstrates CCL11 to be a key player in mediating secondary cell injury under stroke conditions. Interfering with this pathway, as shown for SB297006, might thus be an interesting approach for future stroke treatment paradigms.
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Raphael I, Gomez-Rivera F, Raphael RA, Robinson RR, Nalawade S, Forsthuber TG. TNFR2 limits proinflammatory astrocyte functions during EAE induced by pathogenic DR2b-restricted T cells. JCI Insight 2019; 4:132527. [PMID: 31852844 DOI: 10.1172/jci.insight.132527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 11/13/2019] [Indexed: 12/16/2022] Open
Abstract
Multiple sclerosis (MS) is an autoimmune neuroinflammatory disease where the underlying mechanisms driving disease progression have remained unresolved. HLA-DR2b (DRB1*15:01) is the most common genetic risk factor for MS. Additionally, TNF and its receptors TNFR1 and TNFR2 play key roles in MS and its preclinical animal model, experimental autoimmune encephalomyelitis (EAE). TNFR2 is believed to ameliorate CNS pathology by promoting remyelination and Treg function. Here, we show that transgenic mice expressing the human MHC class II (MHC-II) allele HLA-DR2b and lacking mouse MHC-II and TNFR2 molecules, herein called DR2bΔR2, developed progressive EAE, while disease was not progressive in DR2b littermates. Mechanistically, expression of the HLA-DR2b favored Th17 cell development, whereas T cell-independent TNFR2 expression was critical for restraining of an astrogliosis-induced proinflammatory milieu and Th17 cell responses, while promoting remyelination. Our data suggest the TNFR2 signaling pathway as a potentially novel mechanism for curtailing astrogliosis and promoting remyelination, thus providing new insights into mechanisms limiting progressive MS.
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Affiliation(s)
- Itay Raphael
- Department of Neurological Surgery, University of Pittsburgh, UPMC Children's Hospital, Pittsburgh, Pennsylvania, USA.,Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA
| | - Francisco Gomez-Rivera
- Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA.,Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Rebecca A Raphael
- Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA.,Department of Pharmacology and Chemical Biology, University of Pittsburgh, UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
| | - Rachel R Robinson
- Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA
| | - Saisha Nalawade
- Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA.,Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas, USA
| | - Thomas G Forsthuber
- Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA
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Shin SD, Shin A, Mayagoitia K, Siebold L, Rubini M, Wilson CG, Bellinger DL, Soriano S. Loss of amyloid precursor protein exacerbates early inflammation in Niemann-Pick disease type C. J Neuroinflammation 2019; 16:269. [PMID: 31847862 PMCID: PMC6918596 DOI: 10.1186/s12974-019-1663-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 11/26/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Niemann-Pick disease type C (NPC) is a progressive neurodegenerative condition that results in early fatality. NPC is inherited in an autosomal recessive pattern from mutations in NPC1 or NPC2 genes. The etiology of NPC is poorly defined. In that regard, neuroinflammation occurs early in the disease and we have recently unveiled an atypical pattern of interferon signaling in pre-symptomatic Npc1-/- mice, with microglial activation, anti-viral response, activation of antigen-presenting cells, and activation and chemotaxis of T lymphocytes as the key affected pathologic pathways. Furthermore, IP-10/CXCL10, a potent IFN-γ-responsive cytokine, was identified as the potential mediator of these early inflammatory abnormalities. Here, we asked whether this aberrant signaling may be exacerbated by the loss of amyloid precursor protein (APP) function, a loss known to shorten lifespan and accelerate neurodegeneration in Npc1-/- mice. METHODS We carried out genome-wide comparative transcriptome analyses of pre-symptomatic Npc1+/+/App+/+, Npc1-/-/App+/+, Npc1+/+/App-/-, and Npc1-/-/App-/- mouse cerebella to identify biological pathways in the NPC brain further affected by the loss of APP. Gene Set Enrichment Analysis and Ingenuity Pathway Analysis were utilized for molecular mapping and functional upstream pathway analyses of highly differentially expressed genes. We simultaneously measured the expression of 32 inflammatory cytokines and chemokines in the cerebella from these mice, including those identified in our genome-wide analyses. Finally, we used immunohistochemistry to measure T cell infiltration in the cerebellum. RESULTS Expression of IFN-γ- and IFN-α-responsive genes in pre-symptomatic Npc1-/-/App-/- cerebella is upregulated compared with Npc1-/-/App+/+ mice, compounding the dysregulation of microglial activation, anti-viral response, activation of antigen-presenting cells, and T-lymphocyte activation and chemotaxis pathways present in the NPC brain. Multiplex protein analysis further showed elevated expression of IP-10/CXCL10, a potent downstream effector of IFN-γ, as well as RANTES/CCL5, eotaxin/CCL11 and IL-10, prior to symptomatic onset in Npc1-/-/App-/- cerebella, compared with Npc1-/-/App+/+mice. In the terminal disease stage, loss of APP caused pleiotropic differential expression of the vast majority of cytokines evaluated. Finally, we present evidence of T cell infiltration in Npc1-/-/App-/- cerebella. CONCLUSIONS Loss of APP exacerbates the pathogenic neuroinflammation that occurs prior to symptomatic onset in the NPC brain. These findings shed new light on the function of APP as a cytoprotective modulator in the CNS, offering potential evidence-based therapies against NPC.
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Affiliation(s)
- Samuel D Shin
- Department of Pathology and Human Anatomy, School of Medicine, Loma Linda University, 24785 Stewart St, Loma Linda, California, USA
| | - Alexandra Shin
- Department of Biological Sciences, California Baptist University, Riverside, California, USA
| | - Karina Mayagoitia
- Department of Pathology and Human Anatomy, School of Medicine, Loma Linda University, 24785 Stewart St, Loma Linda, California, USA
| | - Lorraine Siebold
- Lawrence D. Longo Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Marsilio Rubini
- Department of Pathology and Human Anatomy, School of Medicine, Loma Linda University, 24785 Stewart St, Loma Linda, California, USA
| | - Christopher G Wilson
- Lawrence D. Longo Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Denise L Bellinger
- Department of Pathology and Human Anatomy, School of Medicine, Loma Linda University, 24785 Stewart St, Loma Linda, California, USA
| | - Salvador Soriano
- Department of Pathology and Human Anatomy, School of Medicine, Loma Linda University, 24785 Stewart St, Loma Linda, California, USA.
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McLoughlin HS, Moore LR, Paulson HL. Pathogenesis of SCA3 and implications for other polyglutamine diseases. Neurobiol Dis 2019; 134:104635. [PMID: 31669734 DOI: 10.1016/j.nbd.2019.104635] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 09/30/2019] [Accepted: 10/03/2019] [Indexed: 12/14/2022] Open
Abstract
Tandem repeat diseases include the neurodegenerative disorders known as polyglutamine (polyQ) diseases, caused by CAG repeat expansions in the coding regions of the respective disease genes. The nine known polyQ disease include Huntington's disease (HD), dentatorubral-pallidoluysian atrophy (DRPLA), spinal bulbar muscular atrophy (SBMA), and six spinocerebellar ataxias (SCA1, SCA2, SCA3, SCA6, SCA7, and SCA17). The underlying disease mechanism in the polyQ diseases is thought principally to reflect dominant toxic properties of the disease proteins which, when harboring a polyQ expansion, differentially interact with protein partners and are prone to aggregate. Among the polyQ diseases, SCA3 is the most common SCA, and second to HD in prevalence worldwide. Here we summarize current understanding of SCA3 disease mechanisms within the broader context of the broader polyQ disease field. We emphasize properties of the disease protein, ATXN3, and new discoveries regarding three potential pathogenic mechanisms: 1) altered protein homeostasis; 2) DNA damage and dysfunctional DNA repair; and 3) nonneuronal contributions to disease. We conclude with an overview of the therapeutic implications of recent mechanistic insights.
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Affiliation(s)
| | - Lauren R Moore
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Henry L Paulson
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA.
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Abstract
OBJECTIVE Although accumulating evidence supports the hypothesis that immune/inflammatory mechanisms are associated with the pathophysiology of bipolar disorder (BD), data about the profile of chemokines (chemotactic cytokines) and chemokine receptors are still scarce. The current study was designed to evaluate the expression of chemokine receptors on lymphocytes of patients with BD in comparison with controls. METHODS Thirty-three patients with type I BD (N = 21 in euthymia; N = 6 in mania/hypomania; N = 6 in depression) and 22 age- and sex-matched controls were subjected to clinical evaluation and peripheral blood draw. The expression of chemokine receptors CCR3, CCR5, CXCR4, and CXCR3 on CD4+ and CD8+ lymphocytes was assessed by flow cytometry. RESULTS Patients with BD had decreased percentage of CD4+CXCR3+ (p = 0.024), CD4+CCR3+ (p = 0.042), and CD4+CCR5+ (0.013) lymphocytes in comparison with controls. The percentage of both CD4+ and CD8+ lymphocytes expressing the chemokine receptor CXCR4 was similar in patients with BD and controls. Likewise, the percentages of CD8+CXCR3+, CD8+CCR3+, and CD8+CCR5+ lymphocytes were similar in patients with BD and controls. CONCLUSION Our findings reinforce the hypothesis that immune pathways, especially involving CD4+ lymphocytes, are involved in the physiopathology of BD.
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Nakagawa S, Izumi Y, Takada-Takatori Y, Akaike A, Kume T. Increased CCL6 expression in astrocytes and neuronal protection from neuron-astrocyte interactions. Biochem Biophys Res Commun 2019; 519:777-782. [PMID: 31551151 DOI: 10.1016/j.bbrc.2019.09.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 09/09/2019] [Indexed: 12/13/2022]
Abstract
Astrocytes have been reported to exhibit neuroprotective action via various chemokines. Reports of the chemokine CCL6 in central nervous system cells show expression in cultured microglia, but many unexplained effects on neurons and astrocytes remain. In this study, cultured cerebral cortical neurons, astrocytes, and a mixed culture system were constructed, and expression levels of CCL6 and its effects on glutamate neurotoxicity were examined. When neuron cultures and neuron-astrocyte mixed cultures were treated with glutamate, neuronal cell death was observed in both, but was induced by lower concentrations of glutamate in monocultured neurons. In addition, pretreatment of neuron cultures with conditioned media from neuron-astrocyte mixed cultures inhibited glutamate neurotoxicity. CCL6 expression was not observed in fluorescence activated cell sorting analyses of neuron and astrocyte cultures, but was observed in astrocytes from cocultures of neurons and astrocytes. Higher CCL6 concentrations were found in media from cocultures of neurons and astrocytes than in culture media from neuron cultures. Pretreatment of neuron cell cultures with CCL6 for 24 h also protected against glutamate neurotoxicity. This protective effect was suppressed by an antagonist of the chemokine receptor CCR1. Furthermore, glutamate neurotoxicity in mixed neuron and astrocyte cultures was enhanced by pretreatments with the CCR1 antagonist. Finally, cotreatments with the phosphatidylinositol-3 kinase (PI3K) inhibitor and CCL6 abolished the neuroprotective effects of CCL6. These data suggest that astrocytes protect neurons by activating CCR1 in neurons. Moreover, this neuroprotective action of astrocyte CCL6 is mediated by CCR1, and downstream by PI3K.
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Affiliation(s)
- Shota Nakagawa
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan
| | - Yasuhiko Izumi
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Hyogo, 658-8558, Japan
| | - Yuki Takada-Takatori
- Department of Rational Medicinal Science, Faculty of Pharmaceutical Sciences, Doshisha Women's College, Kyoto, 610-0395, Japan
| | | | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan; Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
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Giambrone AB, Logue OC, Shao Q, Bidwell GL, Warrington JP. Perinatal Micro-Bleeds and Neuroinflammation in E19 Rat Fetuses Exposed to Utero-Placental Ischemia. Int J Mol Sci 2019; 20:ijms20164051. [PMID: 31434191 PMCID: PMC6720786 DOI: 10.3390/ijms20164051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/15/2019] [Accepted: 08/18/2019] [Indexed: 12/24/2022] Open
Abstract
Offspring of preeclampsia patients have an increased risk of developing neurological deficits and cognitive impairment. While low placental perfusion, common in preeclampsia and growth restriction, has been linked to neurological deficits, a causative link is not fully established. The goal of this study was to test the hypothesis that placental ischemia induces neuroinflammation and micro-hemorrhages in utero. Timed-pregnant Sprague Dawley rats were weight-matched for sham surgery (abdominal incision only) or induced placental ischemia (surgical reduction of utero-placental perfusion (RUPP)); n = 5/group on gestational day 14. Fetal brains (n = 1–2/dam/endpoint) were collected at embryonic day (E19). Placental ischemia resulted in fewer live fetuses, increased fetal demise, increased hematocrit, and no difference in brain water content in exposed fetuses. Additionally, increased cerebral micro-bleeds (identified with H&E staining), pro-inflammatory cytokines: IL-1β, IL-6, and IL-18, eotaxin (CCL11), LIX (CXCL5), and MIP-2 (CXCL2) were observed in RUPP-exposed fetuses. Microglial density in the sub-ventricular zone decreased in RUPP-exposed fetuses, with no change in cortical thickness. Our findings support the hypothesis that exposure to placental ischemia contributes to microvascular dysfunction (increased micro-bleeds), fetal brain inflammation, and reduced microglial density in proliferative brain areas. Future studies will determine whether in utero abnormalities contribute to long-term behavioral deficits in preeclampsia offspring through impaired neurogenesis regulation.
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Affiliation(s)
- Ashtin B Giambrone
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Omar C Logue
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Qingmei Shao
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Gene L Bidwell
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS 39216, USA
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Junie P Warrington
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS 39216, USA.
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Circulating factors in young blood as potential therapeutic agents for age-related neurodegenerative and neurovascular diseases. Brain Res Bull 2019; 153:15-23. [PMID: 31400495 DOI: 10.1016/j.brainresbull.2019.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 02/07/2023]
Abstract
Recent animal studies on heterochronic parabiosis (a technique combining the blood circulation of two animals) have revealed that young blood has a powerful rejuvenating effect on brain aging. Circulating factors, especially growth differentiation factor 11 (GDF11) and C-C motif chemokine 11 (CCL11), may play a key role in this effect, which inspires hope for novel approaches to treating age-related cerebral diseases in humans, such as neurodegenerative and neurovascular diseases. Recently, attempts have begun to translate these astonishing and exciting findings from mice to humans and from bench to bedside. However, increasing reports have shown contradictory data, questioning the capacity of these circulating factors to reverse age-related brain dysfunction. In this review, we summarize the current research on the role of young blood, as well as the circulating factors GDF11 and CCL11, in the aging brain and age-related cerebral diseases. We highlight recent controversies, discuss related challenges and provide a future outlook.
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71
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Segal BM. Modulation of the Innate Immune System: A Future Approach to the Treatment of Neurological Disease. Clin Immunol 2019; 189:1-3. [PMID: 29628125 DOI: 10.1016/j.clim.2018.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Benjamin M Segal
- Holtom-Garrett Family Program in Neuroimmunology and the Multiple Sclerosis Center, Department of Neurology, University of Michigan, Ann Arbor, MI; Neurology Service, VA Ann Arbor Health Care System, Ann Arbor, MI
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Pleiotropic neuroprotective effects of taxifolin in cerebral amyloid angiopathy. Proc Natl Acad Sci U S A 2019; 116:10031-10038. [PMID: 31036637 DOI: 10.1073/pnas.1901659116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Cerebral amyloid angiopathy (CAA) results from amyloid-β deposition in the cerebrovasculature. It is frequently accompanied by Alzheimer's disease and causes dementia. We recently demonstrated that in a mouse model of CAA, taxifolin improved cerebral blood flow, promoted amyloid-β removal from the brain, and prevented cognitive dysfunction when administered orally. Here we showed that taxifolin inhibited the intracerebral production of amyloid-β through suppressing the ApoE-ERK1/2-amyloid-β precursor protein axis, despite the low permeability of the blood-brain barrier to taxifolin. Higher expression levels of triggering receptor expressed on myeloid cell 2 (TREM2) were associated with the exacerbation of inflammation in the brain. Taxifolin suppressed inflammation, alleviating the accumulation of TREM2-expressing cells in the brain. It also mitigated glutamate levels and oxidative tissue damage and reduced brain levels of active caspases, indicative of apoptotic cell death. Thus, the oral administration of taxifolin had intracerebral pleiotropic neuroprotective effects on CAA through suppressing amyloid-β production and beneficially modulating proinflammatory microglial phenotypes.
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73
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Young bone marrow transplantation preserves learning and memory in old mice. Commun Biol 2019; 2:73. [PMID: 30820468 PMCID: PMC6382867 DOI: 10.1038/s42003-019-0298-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 01/13/2019] [Indexed: 01/14/2023] Open
Abstract
Restoration of cognitive function in old mice by transfer of blood or plasma from young mice has been attributed to reduced C–C motif chemokine ligand 11 (CCL11) and β2-microglobulin, which are thought to suppress neurogenesis in the aging brain. However, the specific role of the hematopoietic system in this rejuvenation has not been defined and the importance of neurogenesis in old mice is unclear. Here we report that transplantation of young bone marrow to rejuvenate the hematopoietic system preserved cognitive function in old recipient mice, despite irradiation-induced suppression of neurogenesis, and without reducing β2-microglobulin. Instead, young bone marrow transplantation preserved synaptic connections and reduced microglial activation in the hippocampus. Circulating CCL11 levels were lower in young bone marrow recipients, and CCL11 administration in young mice had the opposite effect, reducing synapses and increasing microglial activation. In conclusion, young blood or bone marrow may represent a future therapeutic strategy for neurodegenerative disease. Melanie Das et al. demonstrate that transplantation of young bone marrow preserves the cognitive function of old recipient mice. This study suggests that microglial rejuvenation via peripheral manipulation of the hematopoietic system may be sufficient to delay a cognitive decline during aging.
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Lima CNDC, da Silva FER, Chaves Filho AJM, Queiroz AIDG, Okamura AMNC, Fries GR, Quevedo J, de Sousa FCF, Vasconcelos SMM, de Lucena DF, Fonteles MMDF, Macedo DS. High Exploratory Phenotype Rats Exposed to Environmental Stressors Present Memory Deficits Accompanied by Immune-Inflammatory/Oxidative Alterations: Relevance to the Relationship Between Temperament and Mood Disorders. Front Psychiatry 2019; 10:547. [PMID: 31428001 PMCID: PMC6689823 DOI: 10.3389/fpsyt.2019.00547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/15/2019] [Indexed: 12/11/2022] Open
Abstract
Low-exploratory (LE) and high-exploratory (HE) rodents mimic human depressive and hyperthymic temperaments, respectively. Mood disorders (MD) may be developed by the exposure of these temperaments to environmental stress (ES). Psychiatric symptoms severity in MD patients is related to the magnitude of memory impairment. Thus, we aimed at studying the consequences of the exposure of LE and HE male Wistar rats, during periadolescence, to a combination of ES, namely, paradoxical sleep deprivation (PSD) and unpredictable stress (US), on anxiety-related behavior in the plus maze test, working (WM) and declarative memory (DM) performance. We also evaluated hippocampal immune-inflammatory/oxidative, as consequences of ES, and prevention of ES-induced alterations by the mood-stabilizing drugs, lithium and valproate. Medium exploratory (ME) control rats were used for comparisons with HE- and LE-control rats. We observed that HE-controls presented increased anxiolytic behavior that was significantly increased by ES exposure, whereas LE-controls presented increased anxiety-like behavior relative to ME-controls. Lithium and valproate prevented anxiolytic alterations in HE+ES rats. HE+ES- and LE+ES-rats presented WM and DM deficits. Valproate and lithium prevented WM deficits in LE-PSD+US rats. Lithium prevented DM impairment in HE+ES-rats. Hippocampal levels of reduced glutathione (GSH) increased four-fold in HE+ES-rats, being prevented by valproate and lithium. All groups of LE+ES-rats presented increased levels of GSH in relation to controls. Increments in lipid peroxidation in LE+ES- and HE+ES-rats were prevented by valproate in HE+ES-rats and by both drugs in LE+ES-rats. Nitrite levels were increased in HE+ES- and LE+ES-rats (five-fold increase), which was prevented by both drugs in LE+ES-rats. HE+ES-rats presented a two-fold increase in the inducible nitric oxide synthase (iNOS) expression that was prevented by lithium. HE+ES-rats showed increased hippocampal and plasma levels of interleukin (IL)-1β and IL-4. Indoleamine 2, 3-dioxygenase 1 (IDO1) was increased in HE+ES- and LE+ES-rats, while tryptophan 2,3-dioxygenase (TDO2) was increased only in HE+ES-rats. Altogether, our results showed that LE- and HE-rats exposed to ES present distinct anxiety-related behavior and similar memory deficits. Furthermore, HE+ES-rats presented more brain and plasma inflammatory alterations that were partially prevented by the mood-stabilizing drugs. These alterations in HE+ES-rats may possibly be related to the development of mood symptoms.
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Affiliation(s)
- Camila Nayane de Carvalho Lima
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil.,Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States
| | - Francisco Eliclécio Rodrigues da Silva
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - Adriano José Maia Chaves Filho
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - Ana Isabelle de Gois Queiroz
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - Adriana Mary Nunes Costa Okamura
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - Gabriel Rodrigo Fries
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States
| | - João Quevedo
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States
| | - Francisca Cléa F de Sousa
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - Silvania Maria Mendes Vasconcelos
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - David F de Lucena
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - Marta Maria de França Fonteles
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil
| | - Danielle S Macedo
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceara, Fortaleza, Brazil.,National Institute for Translational Medicine (INCT-TM, CNPq), Neurosciences and Behavior Department, Faculdade de Medicina de Ribeirão Preto (FMRP), Ribeirão Preto, Brazil
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Association between plasma CCL11 (eotaxin-1) and cognitive status in older adults: Differences between rural and urban dwellers. Exp Gerontol 2018; 113:173-179. [PMID: 30308289 DOI: 10.1016/j.exger.2018.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/28/2018] [Accepted: 10/04/2018] [Indexed: 12/23/2022]
Abstract
The chemokine CCL11 has been implicated in age-related cognitive deterioration in mice, yet evidence on the relationship between CCL11 and cognitive function in humans is limited. This study explored associations between CCL11 and cognition in rural and urban community-dwelling older adults. Participants were 515 urban dwellers from the 3C-Bordeaux cohort and 318 rural dwellers from the AMI cohort. Plasma CCL11 was measured using an enzyme-linked immunoassay. Mini Mental State Examination (MMSE) test scores were used as the main measure of cognitive performance. Multivariate regression analysis was used to evaluate the cross-sectional association between CCL11 and cognitive performance. CCL11 was significantly higher in rural dwellers compared to city dwellers (median [IQR]: 145 [115-201] pg/mL vs. 103 [85-129] pg/mL; p < 0.001). After adjustment for confounders, CCL11 was found to be negatively associated with cognitive performance in rural dwellers but not in city dwellers. These results suggest that CCL11 may be an independent determinant of cognitive function in older rural dwellers and that the residential environment modifies this association.
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Remacle N, Forny P, Cudré-Cung HP, Gonzalez-Melo M, do Vale-Pereira S, Henry H, Teav T, Gallart-Ayala H, Braissant O, Baumgartner M, Ballhausen D. New in vitro model derived from brain-specific Mut-/- mice confirms cerebral ammonium accumulation in methylmalonic aciduria. Mol Genet Metab 2018; 124:266-277. [PMID: 29934063 DOI: 10.1016/j.ymgme.2018.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Methylmalonic aciduria (MMAuria) is an inborn error of metabolism leading to neurological deterioration. In this study, we used 3D organotypic brain cell cultures derived from embryos of a brain-specific Mut-/- (brain KO) mouse to investigate mechanisms leading to brain damage. We challenged our in vitro model by a catabolic stress (temperature shift). RESULTS Typical metabolites for MMAuria as well as a massive NH4+ increase were found in the media of brain KO cultures. We investigated different pathways of intracerebral NH4+ production and found increased expression of glutaminase 2 and diminished expression of GDH1 in Mut-/- aggregates. While all brain cell types appeared affected in their morphological development in Mut-/- aggregates, the most pronounced effects were observed on astrocytes showing swollen fibers and cell bodies. Inhibited axonal elongation and delayed myelination of oligodendrocytes were also noted. Most effects were even more pronounced after 48 h at 39 °C. Microglia activation and an increased apoptosis rate suggested degeneration of Mut-/- brain cells. NH4+ accumulation might be the trigger for all observed alterations. We also found a generalized increase of chemokine concentrations in Mut-/- culture media at an early developmental stage followed by a decrease at a later stage. CONCLUSION We proved for the first time that Mut-/- brain cells are indeed able to produce the characteristic metabolites of MMAuria. We confirmed significant NH4+ accumulation in culture media of Mut-/- aggregates, suggesting that intracellular NH4+ concentrations might even be higher, gave first clues on the mechanisms leading to NH4+ accumulation in Mut-/- brain cells, and showed the involvement of neuroinflammatory processes in the neuropathophysiology of MMAuria.
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Affiliation(s)
- Noémie Remacle
- Center of Molecular Diseases, Lausanne University Hospital, Lausanne 1011, Switzerland.
| | - Patrick Forny
- Division of Metabolism, University Children's Hospital Zurich, Zurich 8032, Switzerland
| | - Hong-Phuc Cudré-Cung
- Center of Molecular Diseases, Lausanne University Hospital, Lausanne 1011, Switzerland.
| | - Mary Gonzalez-Melo
- Center of Molecular Diseases, Lausanne University Hospital, Lausanne 1011, Switzerland.
| | - Sónia do Vale-Pereira
- Center of Molecular Diseases, Lausanne University Hospital, Lausanne 1011, Switzerland
| | - Hugues Henry
- Service of Clinical Chemistry, Lausanne University Hospital, Lausanne 1011, Switzerland.
| | - Tony Teav
- Metabolomics Unit, Faculty of Biology and Medicine, University of Lausanne, Lausanne 1011, Switzerland.
| | - Hector Gallart-Ayala
- Metabolomics Unit, Faculty of Biology and Medicine, University of Lausanne, Lausanne 1011, Switzerland.
| | - Olivier Braissant
- Service of Clinical Chemistry, Lausanne University Hospital, Lausanne 1011, Switzerland.
| | - Matthias Baumgartner
- Division of Metabolism, University Children's Hospital Zurich, Zurich 8032, Switzerland.
| | - Diana Ballhausen
- Center of Molecular Diseases, Lausanne University Hospital, Lausanne 1011, Switzerland.
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Weinstock LD, Furness AM, Herron SS, Smith SS, Sankar SB, DeRosa SG, Gao D, Mepyans ME, Scotto Rosato A, Medina DL, Vardi A, Ferreira NS, Cho SM, Futerman AH, Slaugenhaupt SA, Wood LB, Grishchuk Y. Fingolimod phosphate inhibits astrocyte inflammatory activity in mucolipidosis IV. Hum Mol Genet 2018; 27:2725-2738. [PMID: 29771310 PMCID: PMC6915831 DOI: 10.1093/hmg/ddy182] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/09/2018] [Accepted: 05/08/2018] [Indexed: 12/25/2022] Open
Abstract
Mucolipidosis IV (MLIV) is an orphan neurodevelopmental disease that causes severe neurologic dysfunction and loss of vision. Currently there is no therapy for MLIV. It is caused by loss of function of the lysosomal channel mucolipin-1, also known as TRPML1. Knockout of the Mcoln1 gene in a mouse model mirrors clinical and neuropathologic signs in humans. Using this model, we previously observed robust activation of microglia and astrocytes in early symptomatic stages of disease. Here we investigate the consequence of mucolipin-1 loss on astrocyte inflammatory activation in vivo and in vitro and apply a pharmacologic approach to restore Mcoln1-/- astrocyte homeostasis using a clinically approved immunomodulator, fingolimod. We found that Mcoln1-/- mice over-express numerous pro-inflammatory cytokines, some of which were also over-expressed in astrocyte cultures. Changes in the cytokine profile in Mcoln1-/- astrocytes are concomitant with changes in phospho-protein signaling, including activation of PI3K/Akt and MAPK pathways. Fingolimod promotes cytokine homeostasis, down-regulates signaling within the PI3K/Akt and MAPK pathways and restores the lysosomal compartment in Mcoln1-/- astrocytes. These data suggest that fingolimod is a promising candidate for preclinical evaluation in our MLIV mouse model, which, in case of success, can be rapidly translated into clinical trial.
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Affiliation(s)
- Laura D Weinstock
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory, Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Dr., Atlanta, GA, USA
| | - Amanda M Furness
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
| | - Shawn S Herron
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
| | - Sierra S Smith
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
| | - Sitara B Sankar
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory, Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Dr., Atlanta, GA, USA
| | - Samantha G DeRosa
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
| | - Dadi Gao
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
| | - Molly E Mepyans
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
| | - Anna Scotto Rosato
- Telethon Institute of Genetics and Medicine (TIGEM), via Campi Flegrei 34, Pozzuoli (NA), Italy
| | - Diego L Medina
- Telethon Institute of Genetics and Medicine (TIGEM), via Campi Flegrei 34, Pozzuoli (NA), Italy
| | - Ayelet Vardi
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Natalia S Ferreira
- Institute of Pharmacology and Toxicology, University of Zurich-Vetsuisse, Winterthurerstrasse 260, Zurich, Switzerland
| | - Soo Min Cho
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Anthony H Futerman
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Susan A Slaugenhaupt
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
| | - Levi B Wood
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory, Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Dr., Atlanta, GA, USA
| | - Yulia Grishchuk
- Department of Neurology, Center for Genomic Medicine, Massachusetts General Hospital Research Institute, Harvard Medical School, 185 Cambridge St., Boston, MA, USA
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78
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Zhu SZ, Szeto V, Bao MH, Sun HS, Feng ZP. Pharmacological approaches promoting stem cell-based therapy following ischemic stroke insults. Acta Pharmacol Sin 2018; 39:695-712. [PMID: 29671416 DOI: 10.1038/aps.2018.23] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/13/2018] [Indexed: 02/06/2023] Open
Abstract
Stroke can lead to long-term neurological deficits. Adult neurogenesis, the continuous generation of newborn neurons in distinct regions of the brain throughout life, has been considered as one of the appoaches to restore the neurological function following ischemic stroke. However, ischemia-induced spontaneous neurogenesis is not suffcient, thus cell-based therapy, including infusing exogenous stem cells or stimulating endogenous stem cells to help repair of injured brain, has been studied in numerous animal experiments and some pilot clinical trials. While the effects of cell-based therapy on neurological function during recovery remains unproven in randomized controlled trials, pharmacological agents have been administrated to assist the cell-based therapy. In this review, we summarized the limitations of ischemia-induced neurogenesis and stem-cell transplantation, as well as the potential proneuroregenerative effects of drugs that may enhance efficacy of cell-based therapies. Specifically, we discussed drugs that enhance proliferation, migration, differentiation, survival and function connectivity of newborn neurons, which may restore neurobehavioral function and improve outcomes in stroke patients.
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79
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Alizadeh A, Santhosh KT, Kataria H, Gounni AS, Karimi-Abdolrezaee S. Neuregulin-1 elicits a regulatory immune response following traumatic spinal cord injury. J Neuroinflammation 2018; 15:53. [PMID: 29467001 PMCID: PMC5822667 DOI: 10.1186/s12974-018-1093-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 02/07/2018] [Indexed: 11/30/2022] Open
Abstract
Background Spinal cord injury (SCI) triggers a robust neuroinflammatory response that governs secondary injury mechanisms with both degenerative and pro-regenerative effects. Identifying new immunomodulatory therapies to promote the supportive aspect of immune response is critically needed for the treatment of SCI. We previously demonstrated that SCI results in acute and permanent depletion of the neuronally derived Neuregulin-1 (Nrg-1) in the spinal cord. Increasing the dysregulated level of Nrg-1 through acute intrathecal Nrg-1 treatment enhanced endogenous cell replacement and promoted white matter preservation and functional recovery in rat SCI. Moreover, we identified a neuroprotective role for Nrg-1 in moderating the activity of resident astrocytes and microglia following injury. To date, the impact of Nrg-1 on immune response in SCI has not yet been investigated. In this study, we elucidated the effect of systemic Nrg-1 therapy on the recruitment and function of macrophages, T cells, and B cells, three major leukocyte populations involved in neuroinflammatory processes following SCI. Methods We utilized a clinically relevant model of moderately severe compressive SCI in female Sprague-Dawley rats. Nrg-1 (2 μg/day) or saline was delivered subcutaneously through osmotic mini-pumps starting 30 min after SCI. We conducted flow cytometry, quantitative real-time PCR, and immunohistochemistry at acute, subacute, and chronic stages of SCI to investigate the effects of Nrg-1 treatment on systemic and spinal cord immune response as well as cytokine, chemokine, and antibody production. Results We provide novel evidence that Nrg-1 promotes a pro-regenerative immune response after SCI. Bioavailability of Nrg-1 stimulated a regulatory phenotype in T and B cells and augmented the population of M2 macrophages in the spinal cord and blood during the acute and chronic stages of SCI. Importantly, Nrg-1 fostered a more balanced microenvironment in the injured spinal cord by attenuating antibody deposition and expression of pro-inflammatory cytokines and chemokines while upregulating pro-regenerative mediators. Conclusion We provide the first evidence of a significant regulatory role for Nrg-1 in neuroinflammation after SCI. Importantly, the present study establishes the promise of systemic Nrg-1 treatment as a candidate immunotherapy for traumatic SCI and other CNS neuroinflammatory conditions. Electronic supplementary material The online version of this article (10.1186/s12974-018-1093-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Arsalan Alizadeh
- Regenerative Medicine Program, Department of Physiology and Pathophysiology, Faculty of Medicine, Spinal Cord Research Centre, University of Manitoba, 629-Basic Medical Sciences Building, 745 Bannatyne Avenue, Winnipeg, Manitoba, R3E 0J9, Canada
| | - Kallivalappil T Santhosh
- Regenerative Medicine Program, Department of Physiology and Pathophysiology, Faculty of Medicine, Spinal Cord Research Centre, University of Manitoba, 629-Basic Medical Sciences Building, 745 Bannatyne Avenue, Winnipeg, Manitoba, R3E 0J9, Canada
| | - Hardeep Kataria
- Regenerative Medicine Program, Department of Physiology and Pathophysiology, Faculty of Medicine, Spinal Cord Research Centre, University of Manitoba, 629-Basic Medical Sciences Building, 745 Bannatyne Avenue, Winnipeg, Manitoba, R3E 0J9, Canada
| | - Abdelilah S Gounni
- Department of Immunology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Soheila Karimi-Abdolrezaee
- Regenerative Medicine Program, Department of Physiology and Pathophysiology, Faculty of Medicine, Spinal Cord Research Centre, University of Manitoba, 629-Basic Medical Sciences Building, 745 Bannatyne Avenue, Winnipeg, Manitoba, R3E 0J9, Canada.
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80
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Kuo HW, Liu TH, Tsou HH, Hsu YT, Wang SC, Fang CP, Liu CC, Chen ACH, Liu YL. Inflammatory chemokine eotaxin-1 is correlated with age in heroin dependent patients under methadone maintenance therapy. Drug Alcohol Depend 2018; 183:19-24. [PMID: 29222992 DOI: 10.1016/j.drugalcdep.2017.10.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 10/03/2017] [Accepted: 10/07/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND Degeneration of central neurons and fibers has been observed in postmortem brains of heroin dependent patients. However, there are no biomarkers to predict the severity of neurodegeneration related to heroin dependence. A correlation has been reported between inflammatory C-C motif chemokine ligand 11 (CCL11, or eotaxin-1) and neurodegeneration in Alzheimer's disease. METHODS Three-hundred-forty-four heroin dependent, Taiwanese patients under methadone maintenance treatment (MMT) were included with clinical assessment and genomics information. Eighty-seven normal control subjects were also recruited for comparison. RESULTS Using receiver operating characteristics curve analyses, CCL11 showed the strongest sensitivity and specificity in correlation with age by a cut-off at 45 years (AUC = 0.69, P < 0.0001) in MMT patients, but not normal controls. Patients 45 years of age or older had significantly higher plasma levels of CCL11, fibroblast growth factor 2 (FGF-2), nicotine metabolite cotinine, and a longer duration of addiction. Plasma level of CCL11 was correlated with that of FGF-2 (partial r2 = 0.24, P < 0.0001). Carriers with the mutant allele of rs1129844, a functional single nucleotide polymorphism (Ala23Thr) in the CCL11 gene, showed a higher plasma level of Aß42, ratio of Aß42/Aß40, and insomnia side effect symptom score than the GG genotype carriers among MMT responders with morphine-negative urine results. CONCLUSIONS The results suggest possible novel mechanisms mediated through CCL11 involving neurotoxicity in heroin dependent patients.
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Affiliation(s)
- Hsiang-Wei Kuo
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli County, Taiwan
| | - Tung-Hsia Liu
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli County, Taiwan
| | - Hsiao-Hui Tsou
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, National Health Research Institutes, Miaoli County, Taiwan; Graduate Institute of Biostatistics, College of Public Health, China Medical University, Taichung, Taiwan
| | - Ya-Ting Hsu
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, National Health Research Institutes, Miaoli County, Taiwan
| | - Sheng-Chang Wang
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli County, Taiwan
| | - Chiu-Ping Fang
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli County, Taiwan
| | - Chia-Chen Liu
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli County, Taiwan
| | - Andrew C H Chen
- Department of Psychiatry, The Zucker Hillside Hospital, Northwell Health System, Glen Oaks, NY, USA; The Feinstein Institute for Medical Research, Hofstra Northwell School of Medicine at Hofstra University, Manhasset, NY, USA
| | - Yu-Li Liu
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli County, Taiwan; Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.
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81
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Liu X, Quan N. Microglia and CNS Interleukin-1: Beyond Immunological Concepts. Front Neurol 2018; 9:8. [PMID: 29410649 PMCID: PMC5787061 DOI: 10.3389/fneur.2018.00008] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/05/2018] [Indexed: 12/12/2022] Open
Abstract
Activation of microglia and expression of the inflammatory cytokine interleukin-1 (IL-1) in the CNS have become almost synonymous with neuroinflammation. In numerous studies, increased CNS IL-1 expression and altered microglial morphology have been used as hallmarks of CNS inflammation. A central concept of how CNS IL-1 and microglia influence functions of the nervous system was derived from the notion initially generated in the peripheral immune system: IL-1 stimulates monocyte/macrophage (the peripheral counterparts of microglia) to amplify inflammation. It is increasingly clear, however, CNS IL-1 acts on other targets in the CNS and microglia participates in many neural functions that are not related to immunological activities. Further, CNS exhibits immunological privilege (although not as absolute as previously thought), rendering amplification of inflammation within CNS under stringent control. This review will analyze current literature to evaluate the contribution of immunological and non-immunological aspects of microglia/IL-1 interaction in the CNS to gain insights for how these aspects might affect health and disease in the nervous tissue.
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Affiliation(s)
- Xiaoyu Liu
- College of Medicine, Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States
| | - Ning Quan
- College of Medicine, Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States.,Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, United States
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82
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Zbesko JC, Nguyen TVV, Yang T, Frye JB, Hussain O, Hayes M, Chung A, Day WA, Stepanovic K, Krumberger M, Mona J, Longo FM, Doyle KP. Glial scars are permeable to the neurotoxic environment of chronic stroke infarcts. Neurobiol Dis 2018; 112:63-78. [PMID: 29331263 PMCID: PMC5851450 DOI: 10.1016/j.nbd.2018.01.007] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 12/12/2017] [Accepted: 01/08/2018] [Indexed: 12/26/2022] Open
Abstract
Following stroke, the damaged tissue undergoes liquefactive necrosis, a stage of infarct resolution that lasts for months although the exact length of time is currently unknown. One method of repair involves reactive astrocytes and microglia forming a glial scar to compartmentalize the area of liquefactive necrosis from the rest of the brain. The formation of the glial scar is a critical component of the healing response to stroke, as well as other central nervous system (CNS) injuries. The goal of this study was to evaluate the toxicity of the extracellular fluid present in areas of liquefactive necrosis and determine how effectively it is segregated from the remainder of the brain. To accomplish this goal, we used a mouse model of stroke in conjunction with an extracellular fluid toxicity assay, fluorescent and electron microscopy, immunostaining, tracer injections into the infarct, and multiplex immunoassays. We confirmed that the extracellular fluid present in areas of liquefactive necrosis following stroke is toxic to primary cortical and hippocampal neurons for at least 7 weeks following stroke, and discovered that although glial scars are robust physical and endocytic barriers, they are nevertheless permeable. We found that molecules present in the area of liquefactive necrosis can leak across the glial scar and are removed by a combination of paravascular clearance and microglial endocytosis in the adjacent tissue. Despite these mechanisms, there is delayed atrophy, cytotoxic edema, and neuron loss in regions adjacent to the infarct for weeks following stroke. These findings suggest that one mechanism of neurodegeneration following stroke is the failure of glial scars to impermeably segregate areas of liquefactive necrosis from surviving brain tissue.
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Affiliation(s)
- Jacob C Zbesko
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA
| | - Thuy-Vi V Nguyen
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA; Department of Neurology, University of Arizona, Tucson, AZ 85719, USA
| | - Tao Yang
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA
| | | | - Omar Hussain
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA
| | - Megan Hayes
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA
| | - Amanda Chung
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA
| | - W Anthony Day
- Arizona Health Sciences Center Imaging Core Facility, Arizona Research Labs, University of Arizona, Tucson, AZ 85719, USA
| | | | - Maj Krumberger
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA
| | - Justine Mona
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA
| | - Frank M Longo
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Kristian P Doyle
- Department of Immunobiology, University of Arizona, Tucson, AZ 85719, USA; Department of Neurology, University of Arizona, Tucson, AZ 85719, USA; Arizona Center on Aging, University of Arizona, Tucson, AZ 85719, USA.
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83
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Teixeira AL, Gama CS, Rocha NP, Teixeira MM. Revisiting the Role of Eotaxin-1/CCL11 in Psychiatric Disorders. Front Psychiatry 2018; 9:241. [PMID: 29962972 PMCID: PMC6010544 DOI: 10.3389/fpsyt.2018.00241] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 05/17/2018] [Indexed: 12/16/2022] Open
Abstract
Eotaxin-1/CCL11 is a chemokine originally implicated in the selective recruitment of eosinophils into inflammatory sites during allergic reactions, being thoroughly investigated in asthma, allergic rhinitis, and other eosinophil-related conditions. Eotaxin-1/CCL11 is also involved with a skewed immune response toward a type-2 (Th2) profile. In addition to its role in immune response, recent studies have shown that eotaxin-1/CCL11 is associated with aging, neurogenesis and neurodegeneration, being able to influence neural progenitor cells, and microglia. Increased circulating levels of eotaxin-1/CCL11 have been described in major psychiatric disorders (schizophrenia, bipolar disorder, major depression), sometimes correlating with the severity of psychopathological and cognitive parameters. As similar findings have been reported in neurodegenerative conditions such as Alzheimer's disease, it has been hypothesized that mechanisms involving eotaxin-1/CCL11 signaling may underlie the "accelerated aging" profile commonly linked to psychiatric disorders. Future studies must determine whether eotaxin-1/CCL11 can be regarded as a prognostic biomarker and/or as therapeutic target for resistant/progressive cases.
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Affiliation(s)
- Antonio L Teixeira
- Neuropsychiatry Program & Immuno-Psychiatry Lab, Department of Psychiatry & Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States.,Laboratório Interdisciplinar de Investigação Médica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Clarissa S Gama
- Molecular Psychiatry Laboratory, Hospital de Clínicas de Porto Alegre, Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Natalia P Rocha
- Neuropsychiatry Program & Immuno-Psychiatry Lab, Department of Psychiatry & Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States.,Laboratório Interdisciplinar de Investigação Médica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro M Teixeira
- Neuropsychiatry Program & Immuno-Psychiatry Lab, Department of Psychiatry & Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
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84
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Hoefer J, Luger M, Dal-Pont C, Culig Z, Schennach H, Jochberger S. The "Aging Factor" Eotaxin-1 (CCL11) Is Detectable in Transfusion Blood Products and Increases with the Donor's Age. Front Aging Neurosci 2017; 9:402. [PMID: 29249965 PMCID: PMC5717008 DOI: 10.3389/fnagi.2017.00402] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 11/21/2017] [Indexed: 11/21/2022] Open
Abstract
Background: High blood levels of the chemokine eotaxin-1 (CCL11) have recently been associated with aging and dementia, as well as impaired memory and learning in humans. Importantly, eotaxin-1 was shown to pass the blood-brain-barrier (BBB) and has been identified as crucial mediator of decreased neurogenesis and cognitive impairment in young mice after being surgically connected to the vessel system of old animals in a parabiosis model. It thus has to be assumed that differences in eotaxin-1 levels between blood donors and recipients might influence cognitive functions also in humans. However, it is unknown if eotaxin-1 is stable during processing and storage of transfusion blood components. This study assesses eotaxin-1 concentrations in fresh-frozen plasma (FFP), erythrocyte concentrate (EC), and platelet concentrate (PC) in dependence of storage time as well as the donor’s age and gender. Methods: Eotaxin-1 was measured in FFP (n = 168), EC (n = 160) and PC (n = 8) ready-to-use for transfusion employing a Q-Plex immunoassay for eotaxin-1. Absolute quantification of eotaxin-1 was performed with Q-view software. Results: Eotaxin-1 was consistently detected at a physiological level in FFP and EC but not PC. Eotaxin-1 levels were comparable in male and female donors but increased significantly with rising age of donors in both, FFP and EC. Furthermore, eotaxin-1 was not influenced by storage time of either blood component. Finally, eotaxin-1 is subject to only minor fluctuations within one donor over a longer period of time. Conclusion: Eotaxin-1 is detectable and stable in FFP and EC and increases with donor’s age. Considering the presumed involvement in aging and cognitive malfunction, differences in donor- and recipient eotaxin-1 levels might affect mental factors after blood transfusion.
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Affiliation(s)
- Julia Hoefer
- Experimental Urology, Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Luger
- Department of Anesthesiology and Critical Care Medicine, University Hospital of Innsbruck, Innsbruck, Austria
| | - Christian Dal-Pont
- Central Institute for Blood Transfusion and Immunological Department, University Hospital of Innsbruck, Innsbruck, Austria
| | - Zoran Culig
- Experimental Urology, Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Harald Schennach
- Central Institute for Blood Transfusion and Immunological Department, University Hospital of Innsbruck, Innsbruck, Austria
| | - Stefan Jochberger
- Department of Anesthesiology and Critical Care Medicine, University Hospital of Innsbruck, Innsbruck, Austria
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85
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Cherry JD, Stein TD, Tripodis Y, Alvarez VE, Huber BR, Au R, Kiernan PT, Daneshvar DH, Mez J, Solomon TM, Alosco ML, McKee AC. CCL11 is increased in the CNS in chronic traumatic encephalopathy but not in Alzheimer's disease. PLoS One 2017; 12:e0185541. [PMID: 28950005 PMCID: PMC5614644 DOI: 10.1371/journal.pone.0185541] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 09/14/2017] [Indexed: 12/14/2022] Open
Abstract
CCL11, a protein previously associated with age-associated cognitive decline, is observed to be increased in the brain and cerebrospinal fluid (CSF) in chronic traumatic encephalopathy (CTE) compared to Alzheimer's disease (AD). Using a cohort of 23 deceased American football players with neuropathologically verified CTE, 50 subjects with neuropathologically diagnosed AD, and 18 non-athlete controls, CCL11 was measured with ELISA in the dorsolateral frontal cortex (DLFC) and CSF. CCL11 levels were significantly increased in the DLFC in subjects with CTE (fold change = 1.234, p < 0.050) compared to non-athlete controls and AD subjects with out a history of head trauma. This increase was also seen to correlate with years of exposure to American football (β = 0.426, p = 0.048) independent of age (β = -0.046, p = 0.824). Preliminary analyses of a subset of subjects with available post-mortem CSF showed a trend for increased CCL11 among individuals with CTE (p = 0.069) mirroring the increase in the DLFC. Furthermore, an association between CSF CCL11 levels and the number of years exposed to football (β = 0.685, p = 0.040) was observed independent of age (β = -0.103, p = 0.716). Finally, a receiver operating characteristic (ROC) curve analysis demonstrated CSF CCL11 accurately distinguished CTE subjects from non-athlete controls and AD subjects (AUC = 0.839, 95% CI 0.62-1.058, p = 0.028). Overall, the current findings provide preliminary evidence that CCL11 may be a novel target for future CTE biomarker studies.
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Affiliation(s)
- Jonathan D. Cherry
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
- VA Boston Healthcare System, Boston, MA, United States of America
- * E-mail:
| | - Thor D. Stein
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
- Department of Veterans Affairs Medical Center, Bedford, MA, United States of America
| | - Yorghos Tripodis
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, United States of America
| | - Victor E. Alvarez
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
- VA Boston Healthcare System, Boston, MA, United States of America
- Department of Veterans Affairs Medical Center, Bedford, MA, United States of America
| | - Bertrand R. Huber
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
- VA Boston Healthcare System, Boston, MA, United States of America
| | - Rhoda Au
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
- Framingham Heart Study, Boston University School of Medicine, Boston, MA, United States of America
| | - Patrick T. Kiernan
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
| | - Daniel H. Daneshvar
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
| | - Jesse Mez
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
| | - Todd M. Solomon
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
| | - Michael L. Alosco
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
| | - Ann C. McKee
- Boston University Alzheimer’s Disease and CTE Center, Boston University School of Medicine, Boston, MA, United States of America
- Department of Neurology, Boston University School of Medicine, Boston, MA. United States of America
- VA Boston Healthcare System, Boston, MA, United States of America
- Department of Veterans Affairs Medical Center, Bedford, MA, United States of America
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, United States of America
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86
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Shao L, Liu X, Zhu S, Liu C, Gao Y, Xu X. The Role of Smurf1 in Neuronal Necroptosis after Lipopolysaccharide-Induced Neuroinflammation. Cell Mol Neurobiol 2017; 38:809-816. [PMID: 28940129 DOI: 10.1007/s10571-017-0553-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 09/18/2017] [Indexed: 12/14/2022]
Abstract
The role of inflammation in neurological disorders such as Alzheimer's disease and Parkinson's disease is gradually recognized and leads to an urgent challenge. Smad ubiquitination regulatory factor 1 (Smurf1), one member of the HECT family, is up-regulated by proinflammatory cytokines and associated with apoptosis in acute spinal cord injury. However, the function of Smurf1 through promoting neuronal necroptosis is still limited in the central nervous system (CNS). Hence, we developed a neuroinflammatory model in adult rats following lipopolysaccharide (LPS) lateral ventral injection to elaborate whether Smurf1 is involved in necroptosis in CNS injury. The up-regulation of Smurf1 detected in the rat brain cortex was similar to the necroptotic marker RIP1 expression in a time-dependent manner after LPS-induced neuroinflammation. Meanwhile, Smurf1 knockdown with siRNA inhibited neuronal necroptosis following LPS-stimulated rat pheochromocytomal PC12 cells. Thus, it was indicated that LPS-induced necroptosis could be promoted by Smurf1. In short, these studies suggest that Smurf1 might promote neuronal necroptosis after LPS-induced neuroinflammation, which might act as a novel and potential molecular target for the treatment of neuroinflammation associated diseases.
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Affiliation(s)
- Lifei Shao
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Xiaojuan Liu
- Department of Pathogen Biology, Medical College, Nantong University, Nantong, Jiangsu, 226001, China
| | - Shunxing Zhu
- Experimental Animal Center, Nantong University, Nantong, Jiangsu, 226001, China
| | - Chun Liu
- Experimental Animal Center, Nantong University, Nantong, Jiangsu, 226001, China
| | - Yilu Gao
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.
| | - Xide Xu
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
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87
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Roy-O'Reilly M, Ritzel RM, Conway SE, Staff I, Fortunato G, McCullough LD. CCL11 (Eotaxin-1) Levels Predict Long-Term Functional Outcomes in Patients Following Ischemic Stroke. Transl Stroke Res 2017. [PMID: 28634890 DOI: 10.1007/s12975-017-0545-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Circulating levels of the pro-inflammatory cytokine C-C motif chemokine 11 (CCL11, also known as eotaxin-1) are increased in several animal models of neuroinflammation, including traumatic brain injury and Alzheimer's disease. Increased levels of CCL11 have also been linked to decreased neurogenesis in mice. We hypothesized that circulating CCL11 levels would increase following ischemic stroke in mice and humans, and that higher CCL11 levels would correlate with poor long-term recovery in patients. As predicted, circulating levels of CCL11 in both young and aged mice increased significantly 24 h after experimental stroke. However, ischemic stroke patients showed decreased CCL11 levels compared to controls 24 h after stroke. Interestingly, lower post-stroke CCL11 levels were predictive of increased stroke severity and independently predictive of poorer functional outcomes in patients 12 months after ischemic stroke. These results illustrate important differences in the peripheral inflammatory response to ischemic stroke between mice and human patients. In addition, it suggests CCL11 as a candidate biomarker for the prediction of acute and long-term functional outcomes in ischemic stroke patients.
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Affiliation(s)
- Meaghan Roy-O'Reilly
- Department of Neurology, University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Rodney M Ritzel
- Department of Neuroscience, University of Connecticut Health Center, Farmington, CT, 06032, USA
| | - Sarah E Conway
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, 02115, USA.,Hartford Hospital, 80 Seymour Street, Hartford, CT, 06106, USA
| | - Ilene Staff
- Hartford Hospital, 80 Seymour Street, Hartford, CT, 06106, USA
| | | | - Louise D McCullough
- Department of Neurology, University of Texas Health Science Center, Houston, TX, 77030, USA. .,Hartford Hospital, 80 Seymour Street, Hartford, CT, 06106, USA.
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88
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Rajda C, Pukoli D, Bende Z, Majláth Z, Vécsei L. Excitotoxins, Mitochondrial and Redox Disturbances in Multiple Sclerosis. Int J Mol Sci 2017; 18:ijms18020353. [PMID: 28208701 PMCID: PMC5343888 DOI: 10.3390/ijms18020353] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 01/20/2017] [Accepted: 01/22/2017] [Indexed: 01/03/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS). There is increasing evidence that MS is not only characterized by immune mediated inflammatory reactions, but also by neurodegenerative processes. There is cumulating evidence that neurodegenerative processes, for example mitochondrial dysfunction, oxidative stress, and glutamate (Glu) excitotoxicity, seem to play an important role in the pathogenesis of MS. The alteration of mitochondrial homeostasis leads to the formation of excitotoxins and redox disturbances. Mitochondrial dysfunction (energy disposal failure, apoptosis, etc.), redox disturbances (oxidative stress and enhanced reactive oxygen and nitrogen species production), and excitotoxicity (Glu mediated toxicity) may play an important role in the progression of the disease, causing axonal and neuronal damage. This review focuses on the mechanisms of mitochondrial dysfunction (including mitochondrial DNA (mtDNA) defects and mitochondrial structural/functional changes), oxidative stress (including reactive oxygen and nitric species), and excitotoxicity that are involved in MS and also discusses the potential targets and tools for therapeutic approaches in the future.
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Affiliation(s)
- Cecilia Rajda
- Department of Neurology, University of Szeged, 6725 Szeged, Hungary.
| | - Dániel Pukoli
- Department of Neurology, University of Szeged, 6725 Szeged, Hungary.
- Department of Neurology, Vaszary Kolos Hospital, 2500 Esztergom, Hungary.
| | - Zsuzsanna Bende
- Department of Neurology, University of Szeged, 6725 Szeged, Hungary.
| | - Zsófia Majláth
- Department of Neurology, University of Szeged, 6725 Szeged, Hungary.
| | - László Vécsei
- Department of Neurology, University of Szeged, 6725 Szeged, Hungary.
- MTA-SZTE Neuroscience Research Group, 6725 Szeged, Hungary.
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89
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Wang F, Baba N, Shen Y, Yamashita T, Tsuru E, Tsuda M, Maeda N, Sagara Y. CCL11 promotes migration and proliferation of mouse neural progenitor cells. Stem Cell Res Ther 2017; 8:26. [PMID: 28173860 PMCID: PMC5297016 DOI: 10.1186/s13287-017-0474-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/20/2016] [Accepted: 01/06/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Neonatal hypoxia-ischemia induces massive brain damage during the perinatal period, resulting in long-term consequences to central nervous system structural and functional maturation. Although neural progenitor cells (NPCs) migrate through the parenchyma and home in to injury sites in the rodent brain, the molecular mechanisms are unknown. We examined the role of chemokines in mediating NPC migration after neonatal hypoxic-ischemic brain injury. METHODS Nine-day-old mice were exposed to a 120-minute hypoxia following unilateral carotid occlusion. Chemokine levels were quantified in mouse brain extract. Migration and proliferation assays were performed using embryonic and infant mouse NPCs. RESULTS The neonatal hypoxic-ischemic brain injury resulted in an ipsilateral lesion, which was extended to the cortical and striatal areas. NPCs migrated toward an injured area, where a marked increase of CC chemokines was detected. In vitro studies showed that incubation of NPCs with recombinant mouse CCL11 promoted migration and proliferation. These effects were partly inhibited by a CCR3 antagonist, SB297006. CONCLUSIONS Our data implicate an important effect of CCL11 for mouse NPCs. The effective activation of NPCs may offer a promising strategy for neuroregeneration in neonatal hypoxic-ischemic brain injury.
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Affiliation(s)
- Feifei Wang
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
| | - Nobuyasu Baba
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan
| | - Yuan Shen
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan
| | - Tatsuyuki Yamashita
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan
| | - Emi Tsuru
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.,Institute for Laboratory Animal Research, Science Research Center, Kochi University Medical School, Kochi, Japan
| | - Masayuki Tsuda
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.,Institute for Laboratory Animal Research, Science Research Center, Kochi University Medical School, Kochi, Japan
| | - Nagamasa Maeda
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.,Department of Obstetrics and Gynecology, Kochi University Medical School, Kochi, Japan
| | - Yusuke Sagara
- Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan
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90
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Shimada A, Hasegawa-Ishii S. Histological Architecture Underlying Brain-Immune Cell-Cell Interactions and the Cerebral Response to Systemic Inflammation. Front Immunol 2017; 8:17. [PMID: 28154566 PMCID: PMC5243818 DOI: 10.3389/fimmu.2017.00017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/05/2017] [Indexed: 11/18/2022] Open
Abstract
Although the brain is now known to actively interact with the immune system under non-inflammatory conditions, the site of cell–cell interactions between brain parenchymal cells and immune cells has been an open question until recently. Studies by our and other groups have indicated that brain structures such as the leptomeninges, choroid plexus stroma and epithelium, attachments of choroid plexus, vascular endothelial cells, cells of the perivascular space, circumventricular organs, and astrocytic endfeet construct the histological architecture that provides a location for intercellular interactions between bone marrow-derived myeloid lineage cells and brain parenchymal cells under non-inflammatory conditions. This architecture also functions as the interface between the brain and the immune system, through which systemic inflammation-induced molecular events can be relayed to the brain parenchyma at early stages of systemic inflammation during which the blood–brain barrier is relatively preserved. Although brain microglia are well known to be activated by systemic inflammation, the mechanism by which systemic inflammatory challenge and microglial activation are connected has not been well documented. Perturbed brain–immune interaction underlies a wide variety of neurological and psychiatric disorders including ischemic brain injury, status epilepticus, repeated social defeat, and neurodegenerative diseases such as Alzheimer’s disease and Parkinson’s disease. Proinflammatory status associated with cytokine imbalance is involved in autism spectrum disorders, schizophrenia, and depression. In this article, we propose a mechanism connecting systemic inflammation, brain–immune interface cells, and brain parenchymal cells and discuss the relevance of basic studies of the mechanism to neurological disorders with a special emphasis on sepsis-associated encephalopathy and preterm brain injury.
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Affiliation(s)
- Atsuyoshi Shimada
- Department of Pathology and Laboratory Medicine, Central Hospital, Aichi Human Service Center , Kasugai, Aichi , Japan
| | - Sanae Hasegawa-Ishii
- Department of Pharmacology, Pennsylvania State University College of Medicine , Hershey, PA , USA
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91
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Zhang LW, Warrington JP. Magnesium Sulfate Prevents Placental Ischemia-Induced Increases in Brain Water Content and Cerebrospinal Fluid Cytokines in Pregnant Rats. Front Neurosci 2016; 10:561. [PMID: 28008305 PMCID: PMC5143678 DOI: 10.3389/fnins.2016.00561] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 11/22/2016] [Indexed: 12/21/2022] Open
Abstract
Magnesium sulfate (MgSO4) is the most widely used therapy in the clinic to prevent the progression of preeclampsia, a hypertensive disorder of pregnancy, to eclampsia. Eclampsia, manifested as unexplained seizures and/or coma during pregnancy or postpartum, accounts for ~13% of maternal deaths worldwide. While MgSO4 continues to be used in the clinic, the mechanisms by which it exerts its protective actions are not well understood. In this study, we tested the hypothesis that MgSO4 protects against placental ischemia-induced increases in brain water content and cerebrospinal fluid cytokines. To test this hypothesis, MgSO4 was administered via mini-osmotic pump (60 mg/day, i.p.) to pregnant and placental ischemic rats, induced by mechanical reduction of uterine perfusion pressure, from gestational day 14–19. This treatment regimen of MgSO4 led to therapeutic level of 2.8 ± 0.6 mmol/L Mg in plasma. MgSO4 had no effect on improving placental ischemia-induced changes in mean arterial pressure, number of live fetuses, or fetal and placental weight. Placental ischemia increased, while MgSO4 prevented the increase in water content in the anterior cerebrum. Cytokine and chemokine levels were measured in the cerebrospinal fluid using a multi-plex assay. Results demonstrate that cerebrospinal fluid, obtained via the cisterna magna, had reduced protein, albumin, interleukin (IL)-17A, IL-18, IL-2, eotaxin, fractalkine, interferon gamma, vascular endothelial growth factor (VEGF), and macrophage inflammatory protein (MIP)-2 following MgSO4 treatment. These data support the hypothesis that MgSO4 offers neuroprotection by preventing placental ischemia-induced cerebral edema and reducing levels of cytokines/chemokines in the cerebrospinal fluid.
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Affiliation(s)
- Linda W Zhang
- Department of Physiology and Biophysics, University of Mississippi Medical Center Jackson, MS, USA
| | - Junie P Warrington
- Department of Physiology and Biophysics, University of Mississippi Medical Center Jackson, MS, USA
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92
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New Insights into the Role of Oxidative Stress Mechanisms in the Pathophysiology and Treatment of Multiple Sclerosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:1973834. [PMID: 27829982 PMCID: PMC5088319 DOI: 10.1155/2016/1973834] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/05/2016] [Accepted: 09/19/2016] [Indexed: 12/11/2022]
Abstract
Multiple sclerosis (MS) is a multifactorial disease of the central nervous system (CNS) characterized by an inflammatory process and demyelination. The etiology of the disease is still not fully understood. Therefore, finding new etiological factors is of such crucial importance. It is suspected that the development of MS may be affected by oxidative stress (OS). In the acute phase OS initiates inflammatory processes and in the chronic phase it sustains neurodegeneration. Redox processes in MS are associated with mitochondrial dysfunction, dysregulation of axonal bioenergetics, iron accumulation in the brain, impaired oxidant/antioxidant balance, and OS memory. The present paper is a review of the current literature about the role of OS in MS and it focuses on all major aspects. The article explains the mechanisms of OS, reports unique biomarkers with regard to their clinical significance, and presents a poorly understood relationship between OS and neurodegeneration. It also provides novel methods of treatment, including the use of antioxidants and the role of antioxidants in neuroprotection. Furthermore, adding new drugs in the treatment of relapse may be useful. The article considers the significance of OS in the current treatment of MS patients.
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93
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Huber AK, Giles DA, Segal BM, Irani DN. An emerging role for eotaxins in neurodegenerative disease. Clin Immunol 2016; 189:29-33. [PMID: 27664933 DOI: 10.1016/j.clim.2016.09.010] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/07/2016] [Accepted: 09/20/2016] [Indexed: 12/13/2022]
Abstract
Eotaxins are C-C motif chemokines first identified as potent eosinophil chemoattractants. They facilitate eosinophil recruitment to sites of inflammation in response to parasitic infections as well as allergic and autoimmune diseases such as asthma, atopic dermatitis, and inflammatory bowel disease. The eotaxin family currently includes three members: eotaxin-1 (CCL11), eotaxin-2 (CCL24), and eotaxin-3 (CCL26). Despite having only ~30% sequence homology to one another, each was identified based on its ability to bind the chemokine receptor, CCR3. Beyond their role in innate immunity, recent studies have shown that CCL11 and related molecules may directly contribute to degenerative processes in the central nervous system (CNS). CCL11 levels increase in the plasma and cerebrospinal fluid of both mice and humans as part of normal aging. In mice, these increases are associated with declining neurogenesis and impaired cognition and memory. In humans, elevated plasma levels of CCL11 have been observed in Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease, and secondary progressive multiple sclerosis when compared to age-matched, healthy controls. Since CCL11 is capable of crossing the blood-brain barrier of normal mice, it is plausible that eotaxins generated in the periphery may exert physiological and pathological actions in the CNS. Here, we briefly review known functions of eotaxin family members during innate immunity, and then focus on whether and how these molecules might participate in the progression of neurodegenerative diseases.
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Affiliation(s)
- Amanda K Huber
- Holtom-Garrett Program in Neuroimmunology, Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - David A Giles
- Holtom-Garrett Program in Neuroimmunology, Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Benjamin M Segal
- Holtom-Garrett Program in Neuroimmunology, Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - David N Irani
- Holtom-Garrett Program in Neuroimmunology, Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, USA.
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94
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Draheim T, Liessem A, Scheld M, Wilms F, Weißflog M, Denecke B, Kensler TW, Zendedel A, Beyer C, Kipp M, Wruck CJ, Fragoulis A, Clarner T. Activation of the astrocytic Nrf2/ARE system ameliorates the formation of demyelinating lesions in a multiple sclerosis animal model. Glia 2016; 64:2219-2230. [PMID: 27641725 DOI: 10.1002/glia.23058] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 08/01/2016] [Accepted: 08/26/2016] [Indexed: 12/21/2022]
Abstract
Oxidative stress critically contributes to the pathogenesis of a variety of neurodegenerative diseases such as multiple sclerosis. Astrocytes are the main regulators of oxidative homeostasis in the brain and dysregulation of these cells likely contributes to the accumulation of oxidative damage. The nuclear factor erythroid 2-related factor 2 (Nrf2) is the main transcriptional regulator of the anti-oxidant stress defense. In this study, we elucidate the effects of astrocytic Nrf2-activation on brain-intrinsic inflammation and lesion development. Cells deficient for the Nrf2 repressor kelch-like ECH-associated protein 1 (Keap1) are characterized by hyperactivation of Nrf2-signaling. Therefore, wild type mice and mice with a GFAP-specific Keap1-deletion were fed with 0.25% cuprizone for 1 or 3 weeks. Cuprizone intoxication induced pronounced oligodendrocyte loss, demyelination and reactive gliosis in wild type animals. In contrast, astrocyte-specific Nrf2-activation was sufficient to prevent oligodendrocyte loss and demyelination, to ameliorate brain intrinsic inflammation and to counteract axonal damage. Our results highlight the potential of the Nrf2/ARE system for the treatment of neuroinflammation in general and of multiple sclerosis in particular. © GLIA 2016;64:2219-2230.
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Affiliation(s)
- T Draheim
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - A Liessem
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - M Scheld
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - F Wilms
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - M Weißflog
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - B Denecke
- Interdisciplinary Centre for Clinical Research (IZKF) Aachen, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - T W Kensler
- Department of Pharmacology and Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - A Zendedel
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany.,Department of Anatomical Sciences, Faculty of Medicine, Giulan University of Medical Sciences, Rasht, Iran
| | - C Beyer
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - M Kipp
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany.,Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - C J Wruck
- Department of Anatomy and Cell Biology, Faculty of Medicine, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - A Fragoulis
- Department of Anatomy and Cell Biology, Faculty of Medicine, Uniklinik RWTH Aachen, Aachen, 52074, Germany.,Department of Orthopaedic Surgery, Faculty of Medicine, Uniklinik RWTH Aachen, Aachen, 52074, Germany
| | - T Clarner
- Faculty of Medicine, Institute of Neuroanatomy, Uniklinik RWTH Aachen, Aachen, 52074, Germany.
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95
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Tay A, Kunze A, Jun D, Hoek E, Di Carlo D. The Age of Cortical Neural Networks Affects Their Interactions with Magnetic Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:3559-67. [PMID: 27228954 PMCID: PMC5300772 DOI: 10.1002/smll.201600673] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/16/2016] [Indexed: 05/21/2023]
Abstract
Despite increasing use of nanotechnology in neuroscience, the characterization of interactions between magnetic nanoparticles (MNPs) and primary cortical neural networks remains underdeveloped. In particular, how the age of primary neural networks affects MNP uptake and endocytosis is critical when considering MNP-based therapies for age-related diseases. Here, primary cortical neural networks are cultured up to 4 weeks and with CCL11/eotaxin, an age-inducing chemokine, to create aged neural networks. As the neural networks are aged, their association with membrane-bound starch-coated ferromagnetic nanoparticles (fMNPs) increases while their endocytic mechanisms are impaired, resulting in reduced internalization of chitosan-coated fMNPs. The age of the neurons also negates the neuroprotective effects of chitosan coatings on fMNPs, attributing to decreased intracellular trafficking and increased colocalization of MNPs with lysosomes. These findings demonstrate the importance of age and developmental stage of primary neural cells when developing in vitro models for fMNP therapeutics targeting age-related diseases.
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Affiliation(s)
- Andy Tay
- Department of Bioengineering, University of California, Los Angeles, CA 90025, United States
| | - Anja Kunze
- Department of Bioengineering, University of California, Los Angeles, CA 90025, United States
| | - Dukwoo Jun
- Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90025, United States
| | - Eric Hoek
- Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90025, United States
| | - Dino Di Carlo
- Department of Bioengineering, University of California, Los Angeles, CA 90025, United States
- California Nanosystems Institute, University of California, Los Angeles, CA 90025, United States
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90025, United States
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96
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Dá Mesquita S, Ferreira AC, Sousa JC, Correia-Neves M, Sousa N, Marques F. Insights on the pathophysiology of Alzheimer's disease: The crosstalk between amyloid pathology, neuroinflammation and the peripheral immune system. Neurosci Biobehav Rev 2016; 68:547-562. [PMID: 27328788 DOI: 10.1016/j.neubiorev.2016.06.014] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 06/09/2016] [Accepted: 06/14/2016] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia, whose prevalence is growing along with the increased life expectancy. Although the accumulation and deposition of amyloid beta (Aβ) peptides in the brain is viewed as one of the pathological hallmarks of AD and underlies, at least in part, brain cell dysfunction and behavior alterations, the etiology of this neurodegenerative disease is still poorly understood. Noticeably, increased amyloid load is accompanied by marked inflammatory alterations, both at the level of the brain parenchyma and at the barriers of the brain. However, it is debatable whether the neuroinflammation observed in aging and in AD, together with alterations in the peripheral immune system, are responsible for increased amyloidogenesis, decreased clearance of Aβ out of the brain and/or the marked deficits in memory and cognition manifested by AD patients. Herein, we scrutinize some important traits of the pathophysiology of aging and AD, focusing on the interplay between the amyloidogenic pathway, neuroinflammation and the peripheral immune system.
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Affiliation(s)
- Sandro Dá Mesquita
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Ana Catarina Ferreira
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - João Carlos Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Margarida Correia-Neves
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal.
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97
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Hasegawa-Ishii S, Inaba M, Umegaki H, Unno K, Wakabayashi K, Shimada A. Endotoxemia-induced cytokine-mediated responses of hippocampal astrocytes transmitted by cells of the brain-immune interface. Sci Rep 2016; 6:25457. [PMID: 27149601 PMCID: PMC4857737 DOI: 10.1038/srep25457] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 04/18/2016] [Indexed: 01/08/2023] Open
Abstract
Systemic inflammation shifts the brain microenvironment towards a proinflammatory state. However, how peripheral inflammation mediates changes in the brain remains to be clarified. We aimed to identify hippocampal cells and cytokines that respond to endotoxemia. Mice were intraperitoneally injected with lipopolysaccharide (LPS) or saline, and examined 1, 4, and 24 h after injection. Tissue cytokine concentrations in the spleens and hippocampi were determined by multiplex assays. Another group of mice were studied immunohistologically. Fourteen cytokines showed an increased concentration in the spleen, and 10 showed an increase in the hippocampus after LPS injection. Cytokines increased at 4 h (CCL2, CXCL1, CXCL2, and interleukin-6) were expressed by leptomeningeal stromal cells, choroid plexus stromal cells, choroid plexus epithelial cells, and hippocampal vascular endothelial cells, all of which were located at the brain-immune interface. Receptors for these cytokines were expressed by astrocytic endfeet. Cytokines increased at 24 h (CCL11, CXCL10, and granulocyte-colony stimulating factor) were expressed by astrocytes. Cells of the brain-immune interface therefore respond to endotoxemia with cytokine signals earlier than hippocampal parenchymal cells. In the parenchyma, astrocytes play a key role in responding to signals by using endfeet located in close apposition to the interface cells via cytokine receptors.
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Affiliation(s)
- Sanae Hasegawa-Ishii
- Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda, Tokyo 102-0083, Japan.,Department of Pathology and Laboratory Medicine, Central Hospital, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi 480-0392, Japan.,Graduate school of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Muneo Inaba
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Hiroyuki Umegaki
- Department of Geriatrics, Graduate School of Medicine, Nagoya University, 65 Tsurumai, Showa-ku, Nagoya, Aichi 466-8550, Japan
| | - Keiko Unno
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Keiji Wakabayashi
- Graduate school of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Atsuyoshi Shimada
- Department of Pathology and Laboratory Medicine, Central Hospital, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi 480-0392, Japan
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98
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Cho SY, Roh HT. Effects of aerobic exercise training on peripheral brain-derived neurotrophic factor and eotaxin-1 levels in obese young men. J Phys Ther Sci 2016; 28:1355-8. [PMID: 27190482 PMCID: PMC4868242 DOI: 10.1589/jpts.28.1355] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 01/16/2016] [Indexed: 12/19/2022] Open
Abstract
[Purpose] The aim of the present study was to investigate the effects of aerobic exercise
training on the levels of peripheral brain-derived neurotrophic factor and eotaxin-1 in
obese young men. [Subjects and Methods] The subjects included sixteen obese young men with
a body mass index greater than 25 kg/m2. They were randomly divided between
control and exercise groups (n = 8 in each group). The exercise group performed treadmill
exercise for 40 min, 3 times a week for 8 weeks at the intensity of 70% heart rate
reserve. Blood collection was performed to examine the levels of serum glucose, plasma
malonaldehyde, serum brain-derived neurotrophic factor, and plasma eotaxin-1 before and
after the intervention (aerobic exercise training). [Results] Following the intervention,
serum BDNF levels were significantly higher, while serum glucose, plasma MDA, and plasma
eotaxin-1 levels were significantly lower than those prior to the intervention in the
exercise group. [Conclusion] Aerobic exercise training can induce neurogenesis in obese
individuals by increasing the levels of brain-derived neurotrophic factor and reducing the
levels of eotaxin-1. Alleviation of oxidative stress is possibly responsible for such
changes.
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Affiliation(s)
- Su Youn Cho
- Exercise Physiology Laboratory, Department of Physical Education, Yonsei University, Republic of Korea
| | - Hee Tae Roh
- Department of Physical Education, College of Arts and Physical Education, Dong-A University, Republic of Korea
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99
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St-Amour I, Cicchetti F, Calon F. Immunotherapies in Alzheimer's disease: Too much, too little, too late or off-target? Acta Neuropathol 2016; 131:481-504. [PMID: 26689922 DOI: 10.1007/s00401-015-1518-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/12/2015] [Accepted: 12/03/2015] [Indexed: 12/19/2022]
Abstract
Years of research have highlighted the importance of the immune system in Alzheimer's disease (AD), a system that, if manipulated during strategic time windows, could potentially be tackled to treat this disorder. However, to minimize adverse effects, it is essential to first grasp which exact aspect of it may be targeted. Several clues have been collected over the years regarding specific immune players strongly modulated during different stages of AD progression. However, the inherent complexity of the immune system as well as conflicting data make it quite challenging to pinpoint a specific immune target in AD. In this review, we discuss immune-related abnormalities observed in the periphery as well as in the brain of AD patients, in relation to known risk factors of AD such as genetics, type-2 diabetes or obesity, aging, physical inactivity and hypertension. Although not investigated yet in clinical trials, C5 complement system component, CD40/CD40L interactions and the CXCR2 pathway are altered in AD patients and may represent potential therapeutic targets. Immunotherapies tested in a clinical context, those aiming to attenuate the innate immune response and those used to facilitate the removal of pathological proteins, are further discussed to try and understand the causes of the limited success reached. The prevailing eagerness to move basic research data to clinic should not overshadow the fact that a careful preclinical characterization of a drug is still required to ultimately improve the chance of clinical success. Finally, specific elements to consider prior to initiate large-scale trials are highlighted and include the replication of preclinical data, the use of small-scale human studies, the sub-typing of AD patients and the determination of pharmacokinetic and pharmacodynamics parameters such as brain bioavailability and target engagement.
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Affiliation(s)
- Isabelle St-Amour
- Axe Neurosciences, Centre de Recherche du CHU de Québec, 2705, Boulevard Laurier, Quebec, QC, G1V 4G2, Canada
- Département de Psychiatrie & Neurosciences, Faculté de médecine, Université Laval, Quebec, QC, Canada
- Faculté de pharmacie, Université Laval, Quebec, QC, Canada
| | - Francesca Cicchetti
- Axe Neurosciences, Centre de Recherche du CHU de Québec, 2705, Boulevard Laurier, Quebec, QC, G1V 4G2, Canada
- Département de Psychiatrie & Neurosciences, Faculté de médecine, Université Laval, Quebec, QC, Canada
| | - Frédéric Calon
- Axe Neurosciences, Centre de Recherche du CHU de Québec, 2705, Boulevard Laurier, Quebec, QC, G1V 4G2, Canada.
- Faculté de pharmacie, Université Laval, Quebec, QC, Canada.
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100
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Warrington JP. Placental ischemia increases seizure susceptibility and cerebrospinal fluid cytokines. Physiol Rep 2015; 3:3/11/e12634. [PMID: 26603461 PMCID: PMC4673655 DOI: 10.14814/phy2.12634] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 10/29/2015] [Indexed: 11/24/2022] Open
Abstract
Eclampsia is diagnosed in preeclamptic patients who develop unexplained seizures and/or coma during pregnancy or postpartum. Eclampsia is one of the leading causes of maternal and infant morbidity and mortality, accounting for ∼13% of maternal deaths worldwide. Little is known about the mechanisms contributing to the pathophysiology of eclampsia, partly due to the lack of suitable animal models. This study tested the hypothesis that placental ischemia, induced by reducing utero-placental perfusion, increases susceptibility to seizures, cerebrospinal fluid (CSF) inflammation, and neurokinin B (NKB) expression in brain and plasma. Pentylenetetrazol (PTZ), a pro-convulsive drug, was injected into pregnant and placental ischemic rats (40 mg/kg, i.p.) on gestational day 19 followed by video monitoring for 30 min. Seizure scoring was blindly conducted. Placental ischemia hastened the onset of seizures compared to pregnant controls but had no effect on seizure duration. Placental ischemia increased CSF levels of IL-2, IL-17, IL-18 and eotaxin (CCL11), had no effect on plasma NKB; however, PTZ increased plasma NKB in both pregnant and placental ischemic rats. NKB was strongly correlated with latency to seizure in normal pregnant rats (R2 = 0.88 vs. 0.02 in placental ischemic rats). Lastly, NKB decreased in the anterior cerebrum in response to placental ischemia and PTZ treatment but was unchanged in the posterior cerebrum. These data demonstrate that placental ischemia is associated with increased susceptibility to seizures and CSF inflammation; thus provides an excellent model for elucidating mechanisms of eclampsia-like symptoms. Further studies are required to determine the role of CSF cytokines/chemokines in mediating increased seizure susceptibility.
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Affiliation(s)
- Junie P Warrington
- Department of Physiology & Biophysics, University of Mississippi Medical Center, Jackson, Mississippi
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