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van Amerongen S, Das S, Kamps S, Goossens J, Bongers B, Pijnenburg YAL, Vanmechelen E, Vijverberg EGB, Teunissen CE, Verberk IMW. Cerebrospinal fluid biomarkers and cognitive trajectories in patients with Alzheimer's disease and a history of traumatic brain injury. Neurobiol Aging 2024; 141:121-128. [PMID: 38908030 DOI: 10.1016/j.neurobiolaging.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 06/07/2024] [Accepted: 06/13/2024] [Indexed: 06/24/2024]
Abstract
Traumatic brain injury (TBI) and Alzheimer's disease (AD) have overlapping mechanisms but it remains unknown if pathophysiological characteristics and cognitive trajectories in AD patients are influenced by TBI history. Here, we studied AD patients (stage MCI or dementia) with TBI history (ADTBI+, n=110), or without (ADTBI-, n=110) and compared baseline CSF concentrations of amyloid beta 1-42 (Aβ42), phosphorylated tau181 (pTau181), total tau, neurofilament light chain (NfL), synaptosomal associated protein-25kDa (SNAP25), neurogranin (Ng), neuronal pentraxin-2 (NPTX2) and glutamate receptor-4 (GluR4), as well as differences in cognitive trajectories using linear mixed models. Explorative, analyses were repeated within stratified TBI groups by TBI characteristics (timing, severity, number). We found no differences in baseline CSF biomarker concentrations nor in cognitive trajectories between ADTBI+ and ADTBI- patients. TBI >5 years ago was associated with higher NPTX2 and a tendency for higher SNAP25 concentrations compared to TBI ≤ 5 years ago, suggesting that TBI may be associated with long-term synaptic dysfunction only when occurring before onset or in a pre-clinical disease stage of AD.
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Affiliation(s)
- Suzan van Amerongen
- Amsterdam Neuroscience, Neurodegeneration, De Boelelaan 1085, Amsterdam 1081 HV, the Netherlands; Alzheimer Center Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, De Boelelaan 1118, Amsterdam 1081 HV, the Netherlands.
| | - Shreyasee Das
- Neurochemistry Laboratory, Department of Laboratory Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Boelelaan 1117, Amsterdam 1081 HV, the Netherlands; ADx NeuroSciences, Technologiepark-Zwijnaarde 6, Gent 9052, Belgium
| | - Suzie Kamps
- Amsterdam Neuroscience, Neurodegeneration, De Boelelaan 1085, Amsterdam 1081 HV, the Netherlands; Alzheimer Center Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, De Boelelaan 1118, Amsterdam 1081 HV, the Netherlands
| | - Julie Goossens
- ADx NeuroSciences, Technologiepark-Zwijnaarde 6, Gent 9052, Belgium
| | - Bram Bongers
- Neurochemistry Laboratory, Department of Laboratory Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Boelelaan 1117, Amsterdam 1081 HV, the Netherlands
| | - Yolande A L Pijnenburg
- Amsterdam Neuroscience, Neurodegeneration, De Boelelaan 1085, Amsterdam 1081 HV, the Netherlands; Alzheimer Center Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, De Boelelaan 1118, Amsterdam 1081 HV, the Netherlands
| | | | - Everard G B Vijverberg
- Amsterdam Neuroscience, Neurodegeneration, De Boelelaan 1085, Amsterdam 1081 HV, the Netherlands; Alzheimer Center Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, De Boelelaan 1118, Amsterdam 1081 HV, the Netherlands
| | - Charlotte E Teunissen
- Amsterdam Neuroscience, Neurodegeneration, De Boelelaan 1085, Amsterdam 1081 HV, the Netherlands; Alzheimer Center Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, De Boelelaan 1118, Amsterdam 1081 HV, the Netherlands; Neurochemistry Laboratory, Department of Laboratory Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Boelelaan 1117, Amsterdam 1081 HV, the Netherlands
| | - Inge M W Verberk
- Amsterdam Neuroscience, Neurodegeneration, De Boelelaan 1085, Amsterdam 1081 HV, the Netherlands; Alzheimer Center Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, De Boelelaan 1118, Amsterdam 1081 HV, the Netherlands; Neurochemistry Laboratory, Department of Laboratory Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Boelelaan 1117, Amsterdam 1081 HV, the Netherlands
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2
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Da Mesquita S, Rua R. Brain border-associated macrophages: common denominators in infection, aging, and Alzheimer's disease? Trends Immunol 2024; 45:346-357. [PMID: 38632001 PMCID: PMC11088519 DOI: 10.1016/j.it.2024.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 04/19/2024]
Abstract
Mammalian brain border-associated macrophages (BAMs) are strategically positioned to support vital properties and processes: for example, the composition of the brain's perivascular extracellular matrix and cerebrospinal fluid flow via the glymphatic pathway. BAMs also effectively restrict the spread of infectious microbes into the brain. However, while fighting infections, BAMs sustain long-term transcriptomic changes and can be replaced by inflammatory monocytes, potentially leading to a gradual loss of their beneficial homeostatic functions. We hypothesize that by expediting the deterioration of BAMs, multiple infection episodes might be associated with accelerated brain aging and the putative development of neurodegenerative diseases. Our viewpoint is supported by recent studies suggesting that rejuvenating aged BAMs, and counterbalancing their detrimental inflammatory signatures during infections, might hold promise in treating aging-related neurological disorders, including Alzheimer's disease (AD).
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Affiliation(s)
| | - Rejane Rua
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, Inserm, CNRS, Marseille, France.
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3
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Surzenko N, Bastidas J, Reid RW, Curaba J, Zhang W, Bostan H, Wilson M, Dominique A, Roberson J, Ignacio G, Komarnytsky S, Sanders A, Lambirth K, Brouwer CR, El-Khodor BF. Functional recovery following traumatic brain injury in rats is enhanced by oral supplementation with bovine thymus extract. FASEB J 2024; 38:e23460. [PMID: 38315443 DOI: 10.1096/fj.202301859r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/30/2023] [Accepted: 01/18/2024] [Indexed: 02/07/2024]
Abstract
Traumatic brain injury (TBI) is one of the leading causes of death worldwide. There are currently no effective treatments for TBI, and trauma survivors suffer from a variety of long-lasting health consequences. With nutritional support recently emerging as a vital step in improving TBI patients' outcomes, we sought to evaluate the potential therapeutic benefits of nutritional supplements derived from bovine thymus gland, which can deliver a variety of nutrients and bioactive molecules. In a rat model of controlled cortical impact (CCI), we determined that animals supplemented with a nuclear fraction of bovine thymus (TNF) display greatly improved performance on beam balance and spatial memory tests following CCI. Using RNA-Seq, we identified an array of signaling pathways that are modulated by TNF supplementation in rat hippocampus, including those involved in the process of autophagy. We further show that bovine thymus-derived extracts contain antigens found in neural tissues and that supplementation of rats with thymus extracts induces production of serum IgG antibodies against neuronal and glial antigens, which may explain the enhanced animal recovery following CCI through possible oral tolerance mechanism. Collectively, our data demonstrate, for the first time, the potency of a nutritional supplement containing nuclear fraction of bovine thymus in enhancing the functional recovery from TBI.
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Affiliation(s)
- Natalia Surzenko
- Nutrition Innovation Center, Standard Process, Inc., Kannapolis, North Carolina, USA
| | | | - Robert W Reid
- College of Computing and Informatics, University of North Carolina at Charlotte, Kannapolis, North Carolina, USA
| | - Julien Curaba
- Eremid Genomic Services, LLC, Kannapolis, North Carolina, USA
| | - Wei Zhang
- Nutrition Innovation Center, Standard Process, Inc., Kannapolis, North Carolina, USA
| | - Hamed Bostan
- Eremid Genomic Services, LLC, Kannapolis, North Carolina, USA
| | - Mickey Wilson
- Nutrition Innovation Center, Standard Process, Inc., Kannapolis, North Carolina, USA
| | - Ashley Dominique
- Nutrition Innovation Center, Standard Process, Inc., Kannapolis, North Carolina, USA
| | - Julia Roberson
- Nutrition Innovation Center, Standard Process, Inc., Kannapolis, North Carolina, USA
| | - Glicerio Ignacio
- David H. Murdock Research Institute, Kannapolis, North Carolina, USA
| | - Slavko Komarnytsky
- Department of Food, Bioprocessing and Nutrition Sciences, Plants for Human Health Institute, North Carolina State University, Kannapolis, North Carolina, USA
| | - Alexa Sanders
- College of Computing and Informatics, University of North Carolina at Charlotte, Kannapolis, North Carolina, USA
| | - Kevin Lambirth
- College of Computing and Informatics, University of North Carolina at Charlotte, Kannapolis, North Carolina, USA
| | - Cory R Brouwer
- College of Computing and Informatics, University of North Carolina at Charlotte, Kannapolis, North Carolina, USA
| | - Bassem F El-Khodor
- Nutrition Innovation Center, Standard Process, Inc., Kannapolis, North Carolina, USA
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4
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Tang D, Sun C, Yang J, Fan L, Wang Y. Advances in the Study of the Pathology and Treatment of Alzheimer's Disease and Its Association with Periodontitis. Life (Basel) 2023; 13:2203. [PMID: 38004343 PMCID: PMC10672606 DOI: 10.3390/life13112203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Alzheimer's disease (AD) has become one of the leading causes of health problems in the elderly, and studying its causes and treatments remains a serious challenge for researchers worldwide. The two main pathological features of Alzheimer's disease are the extracellular deposition of β-amyloid (Aβ) to form senile plaques and the intracellular aggregation of hyperphosphorylated Tau protein to form neurofibrillary tangles (NFTs). Researchers have proposed several hypotheses to elucidate the pathogenesis of AD, but due to the complexity of the pathophysiologic factors involved in the development of AD, no effective drugs have been found to stop the progression of the disease. Currently, the mainstay drugs used to treat AD can only alleviate the patient's symptoms and do not have a therapeutic effect. As researchers explore interactions among diseases, much evidence suggests that there is a close link between periodontitis and AD, and that periodontal pathogenic bacteria can exacerbate Aβ deposition and Tau protein hyperphosphorylation through neuroinflammatory mechanisms, thereby advancing the pathogenesis of AD. This article reviews recent advances in the pathogenesis of AD, available therapeutic agents, the relevance of periodontitis to AD, and mechanisms of action.
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Affiliation(s)
- Dan Tang
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (C.S.); (L.F.)
| | - Chang Sun
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (C.S.); (L.F.)
| | - Jumei Yang
- Lanzhou University Second Hospital, Lanzhou 730000, China;
| | - Lili Fan
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (C.S.); (L.F.)
| | - Yonggang Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (C.S.); (L.F.)
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He Y, Nan D, Wang H. Role of Non-Receptor-Type Tyrosine Phosphatases in Brain-Related Diseases. Mol Neurobiol 2023; 60:6530-6541. [PMID: 37458988 DOI: 10.1007/s12035-023-03487-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 07/05/2023] [Indexed: 09/28/2023]
Abstract
The non-receptor protein tyrosine phosphatase is a class of enzymes that catalyze the dephosphorylation of phosphotyrosines in protein molecules. They are involved in cellular signaling by regulating the phosphorylation status of a variety of receptors and signaling molecules within the cell, thereby influencing cellular physiological and pathological processes. In this article, we detail multiple non-receptor tyrosine phosphatase and non-receptor tyrosine phosphatase genes involved in the pathological process of brain disease. These include PTPN6, PTPN11, and PTPN13, which are involved in glioma signaling; PTPN1, PTPN5, and PTPN13, which are involved in the pathogenesis of Alzheimer's disease Tau protein lesions, PTPN23, which may be involved in the pathogenesis of Epilepsy and PTPN1, which is involved in the pathogenesis of Parkinson's disease. The role of mitochondrial tyrosine phosphatase in brain diseases was also discussed. Non-receptor tyrosine phosphatases have great potential for targeted therapies in brain diseases and are highly promising research areas.
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Affiliation(s)
- Yatong He
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Ding Nan
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Hongmei Wang
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China.
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6
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Rego S, Sanchez G, Da Mesquita S. Current views on meningeal lymphatics and immunity in aging and Alzheimer's disease. Mol Neurodegener 2023; 18:55. [PMID: 37580702 PMCID: PMC10424377 DOI: 10.1186/s13024-023-00645-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/02/2023] [Indexed: 08/16/2023] Open
Abstract
Alzheimer's disease (AD) is an aging-related form of dementia associated with the accumulation of pathological aggregates of amyloid beta and neurofibrillary tangles in the brain. These phenomena are accompanied by exacerbated inflammation and marked neuronal loss, which altogether contribute to accelerated cognitive decline. The multifactorial nature of AD, allied to our still limited knowledge of its etiology and pathophysiology, have lessened our capacity to develop effective treatments for AD patients. Over the last few decades, genome wide association studies and biomarker development, alongside mechanistic experiments involving animal models, have identified different immune components that play key roles in the modulation of brain pathology in AD, affecting its progression and severity. As we will relay in this review, much of the recent efforts have been directed to better understanding the role of brain innate immunity, and particularly of microglia. However, and despite the lack of diversity within brain resident immune cells, the brain border tissues, especially the meninges, harbour a considerable number of different types and subtypes of adaptive and innate immune cells. Alongside microglia, which have taken the centre stage as important players in AD research, there is new and exciting evidence pointing to adaptive immune cells, namely T and B cells found in the brain and its meninges, as important modulators of neuroinflammation and neuronal (dys)function in AD. Importantly, a genuine and functional lymphatic vascular network is present around the brain in the outermost meningeal layer, the dura. The meningeal lymphatics are directly connected to the peripheral lymphatic system in different mammalian species, including humans, and play a crucial role in preserving a "healthy" immune surveillance of the CNS, by shaping immune responses, not only locally at the meninges, but also at the level of the brain tissue. In this review, we will provide a comprehensive view on our current knowledge about the meningeal lymphatic vasculature, emphasizing its described roles in modulating CNS fluid and macromolecule drainage, meningeal and brain immunity, as well as glial and neuronal function in aging and in AD.
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Affiliation(s)
- Shanon Rego
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Post-baccalaureate Research Education Program, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Guadalupe Sanchez
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Neuroscience Ph.D. Program, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Sandro Da Mesquita
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA.
- Post-baccalaureate Research Education Program, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, 32224, USA.
- Neuroscience Ph.D. Program, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, 32224, USA.
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7
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Chen C. Inhibiting degradation of 2-arachidonoylglycerol as a therapeutic strategy for neurodegenerative diseases. Pharmacol Ther 2023; 244:108394. [PMID: 36966972 PMCID: PMC10123871 DOI: 10.1016/j.pharmthera.2023.108394] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/17/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023]
Abstract
Endocannabinoids are endogenous lipid signaling mediators that participate in a variety of physiological and pathological processes. 2-Arachidonoylglycerol (2-AG) is the most abundant endocannabinoid and is a full agonist of G-protein-coupled cannabinoid receptors (CB1R and CB2R), which are targets of Δ9-tetrahydrocannabinol (Δ9-THC), the main psychoactive ingredient in cannabis. While 2-AG has been well recognized as a retrograde messenger modulating synaptic transmission and plasticity at both inhibitory GABAergic and excitatory glutamatergic synapses in the brain, growing evidence suggests that 2-AG also functions as an endogenous terminator of neuroinflammation in response to harmful insults, thus maintaining brain homeostasis. Monoacylglycerol lipase (MAGL) is the key enzyme that degrades 2-AG in the brain. The immediate metabolite of 2-AG is arachidonic acid (AA), a precursor of prostaglandins (PGs) and leukotrienes. Several lines of evidence indicate that pharmacological or genetic inactivation of MAGL, which boosts 2-AG levels and reduces its hydrolytic metabolites, resolves neuroinflammation, mitigates neuropathology, and improves synaptic and cognitive functions in animal models of neurodegenerative diseases, including Alzheimer's disease (AD), multiple sclerosis (MS), Parkinson's disease (PD), and traumatic brain injury (TBI)-induced neurodegenerative disease. Thus, it has been proposed that MAGL is a potential therapeutic target for treatment of neurodegenerative diseases. As the main enzyme hydrolyzing 2-AG, several MAGL inhibitors have been identified and developed. However, our understanding of the mechanisms by which inactivation of MAGL produces neuroprotective effects in neurodegenerative diseases remains limited. A recent finding that inhibition of 2-AG metabolism in astrocytes, but not in neurons, protects the brain from TBI-induced neuropathology might shed some light on this unsolved issue. This review provides an overview of MAGL as a potential therapeutic target for neurodegenerative diseases and discusses possible mechanisms underlying the neuroprotective effects of restraining degradation of 2-AG in the brain.
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8
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Katzenberger RJ, Ganetzky B, Wassarman DA. Lissencephaly-1 mutations enhance traumatic brain injury outcomes in Drosophila. Genetics 2023; 223:iyad008. [PMID: 36683334 PMCID: PMC9991514 DOI: 10.1093/genetics/iyad008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 11/14/2022] [Accepted: 01/16/2023] [Indexed: 01/24/2023] Open
Abstract
Traumatic brain injury (TBI) outcomes vary greatly among individuals, but most of the variation remains unexplained. Using a Drosophila melanogaster TBI model and 178 genetically diverse lines from the Drosophila Genetic Reference Panel (DGRP), we investigated the role that genetic variation plays in determining TBI outcomes. Following injury at 20-27 days old, DGRP lines varied considerably in mortality within 24 h ("early mortality"). Additionally, the disparity in early mortality resulting from injury at 20-27 vs 0-7 days old differed among DGRP lines. These data support a polygenic basis for differences in TBI outcomes, where some gene variants elicit their effects by acting on aging-related processes. Our genome-wide association study of DGRP lines identified associations between single nucleotide polymorphisms in Lissencephaly-1 (Lis-1) and Patronin and early mortality following injury at 20-27 days old. Lis-1 regulates dynein, a microtubule motor required for retrograde transport of many cargoes, and Patronin protects microtubule minus ends against depolymerization. While Patronin mutants did not affect early mortality, Lis-1 compound heterozygotes (Lis-1x/Lis-1y) had increased early mortality following injury at 20-27 or 0-7 days old compared with Lis-1 heterozygotes (Lis-1x/+), and flies that survived 24 h after injury had increased neurodegeneration but an unaltered lifespan, indicating that Lis-1 affects TBI outcomes independently of effects on aging. These data suggest that Lis-1 activity is required in the brain to ameliorate TBI outcomes through effects on axonal transport, microtubule stability, and other microtubule proteins, such as tau, implicated in chronic traumatic encephalopathy, a TBI-associated neurodegenerative disease in humans.
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Affiliation(s)
- Rebeccah J Katzenberger
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Barry Ganetzky
- Department of Genetics, College of Agricultural and Life Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - David A Wassarman
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53706, USA
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Le WD, Yang C, Yang Q, Xiang Y, Zeng XR, Xiao J. The neuroprotective effects of oxygen therapy in Alzheimer’s disease: a narrative review. Neural Regen Res 2023. [PMID: 35799509 PMCID: PMC9241400 DOI: 10.4103/1673-5374.343897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Alzheimer’s disease (AD) is a degenerative neurological disease that primarily affects the elderly. Drug therapy is the main strategy for AD treatment, but current treatments suffer from poor efficacy and a number of side effects. Non-drug therapy is attracting more attention and may be a better strategy for treatment of AD. Hypoxia is one of the important factors that contribute to the pathogenesis of AD. Multiple cellular processes synergistically promote hypoxia, including aging, hypertension, diabetes, hypoxia/obstructive sleep apnea, obesity, and traumatic brain injury. Increasing evidence has shown that hypoxia may affect multiple pathological aspects of AD, such as amyloid-beta metabolism, tau phosphorylation, autophagy, neuroinflammation, oxidative stress, endoplasmic reticulum stress, and mitochondrial and synaptic dysfunction. Treatments targeting hypoxia may delay or mitigate the progression of AD. Numerous studies have shown that oxygen therapy could improve the risk factors and clinical symptoms of AD. Increasing evidence also suggests that oxygen therapy may improve many pathological aspects of AD including amyloid-beta metabolism, tau phosphorylation, neuroinflammation, neuronal apoptosis, oxidative stress, neurotrophic factors, mitochondrial function, cerebral blood volume, and protein synthesis. In this review, we summarized the effects of oxygen therapy on AD pathogenesis and the mechanisms underlying these alterations. We expect that this review can benefit future clinical applications and therapy strategies on oxygen therapy for AD.
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Zhang H, Zhao Y, Qu Y, Huang Y, Chen Z, Lan H, Peng Y, Ren H. The Effect of Repetitive Transcranial Magnetic Stimulation (rTMS) on Cognition in Patients With Traumatic Brain Injury: A Protocol for a Randomized Controlled Trial. Front Neurol 2022; 13:832818. [PMID: 35432165 PMCID: PMC9005968 DOI: 10.3389/fneur.2022.832818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/09/2022] [Indexed: 11/29/2022] Open
Abstract
Cognitive impairment, defined as a decline in memory and executive function, is one of the most severe complications of traumatic brain injury (TBI). Patients with TBI are often unable to return to work due to cognitive impairment and their overall quality of life is reduced. TBI can bring a serious economic burden to patient's families and to society. Reported findings on the efficacy of repetitive transcranial magnetic stimulation (rTMS) in improving cognitive impairment following TBI are inconsistent. The purpose of the proposed study is to investigate whether rTMS can improve memory and executive function in patients with TBI. Herein, we propose a prospective randomized placebo-controlled (rTMS, sham rTMS, cognitive training), parallel-group, single-center trial. 36 participants with a TBI occurring at least 6 months prior will be recruited from an inpatient rehabilitation center. Participants will be randomly assigned to the real rTMS, sham rTMS, or cognitive training groups with a ratio of 1:1:1. A 20-session transcranial magnetic stimulation protocol will be applied to the left and right dorsolateral prefrontal cortices (DLPFC) at frequencies of 10 Hz and 1 Hz, respectively. Neuropsychological assessments will be performed at four time points: baseline, after the 10th rTMS session, after the 20th rTMS session, and 30 days post-intervention. The primary outcome is change in executive function assessed using the Shape Trail Test (STT). The secondary outcome measures are measures from neuropsychological tests: the Hopkins Verbal Learning Test (HVLT), the Brief Visuospatial Memory Test (BVMT), the Digit Span Test (DST). We report on positive preliminary results in terms of improving memory and executive function as well as beneficial changes in brain connectivity among TBI patients undergoing rTMS and hypothesize that we will obtain similar results in the proposed study.
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Affiliation(s)
- Han Zhang
- Department of Rehabilitation Medicine, West China Hospital of Sichuan University, Chengdu, China
- Department of Rehabilitation Medicine, Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
- College of Rehabilitation Medicine, West China Hospital of Sichuan University, Chengdu, China
- Sichuan Provincial Key Laboratory of Rehabilitation Medicine, Sichuan University, Chengdu, China
| | - Yu Zhao
- Department of Rehabilitation Medicine, Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - Yun Qu
- Department of Rehabilitation Medicine, West China Hospital of Sichuan University, Chengdu, China
- College of Rehabilitation Medicine, West China Hospital of Sichuan University, Chengdu, China
- Sichuan Provincial Key Laboratory of Rehabilitation Medicine, Sichuan University, Chengdu, China
- *Correspondence: Yun Qu
| | - Yunyun Huang
- Department of Rehabilitation Medicine, Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - Zhu Chen
- Department of Rehabilitation Medicine, Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - Hong Lan
- Department of Rehabilitation Medicine, Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - Yi Peng
- Department of Rehabilitation Medicine, Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - Hongying Ren
- Department of Rehabilitation Medicine, Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
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11
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Kennedy E, Panahi S, Stewart IJ, Tate DF, Wilde EA, Kenney K, Werner JK, Gill J, Diaz-Arrastia R, Amuan M, Van Cott AC, Pugh MJ. Traumatic Brain Injury and Early Onset Dementia in Post 9-11 Veterans. Brain Inj 2022; 36:620-627. [DOI: 10.1080/02699052.2022.2033846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Eamonn Kennedy
- Va Salt Lake City Health Care System, Informatics, Decision-Enhancement and Analytic Sciences Center, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Samin Panahi
- Va Salt Lake City Health Care System, Informatics, Decision-Enhancement and Analytic Sciences Center, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Ian J. Stewart
- Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - David F. Tate
- Va Salt Lake City Health Care System, Informatics, Decision-Enhancement and Analytic Sciences Center, Salt Lake City, Utah, USA
- Neurology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Elisabeth A. Wilde
- Va Salt Lake City Health Care System, Informatics, Decision-Enhancement and Analytic Sciences Center, Salt Lake City, Utah, USA
- Neurology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Kimbra Kenney
- Department of Neurology, Uniformed Services University of Health Sciences, Bethesda, Maryland, USA
| | - J. Kent Werner
- Department of Neurology, Uniformed Services University of Health Sciences, Bethesda, Maryland, USA
| | - Jessica Gill
- John Hopkins, School of Nursing and Medicine, Baltimore, Maryland, USA
| | - Ramon Diaz-Arrastia
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Megan Amuan
- Va Salt Lake City Health Care System, Informatics, Decision-Enhancement and Analytic Sciences Center, Salt Lake City, Utah, USA
| | - Anne C. Van Cott
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- VA Pittsburgh Health Care System, Pittsburgh Pennsylvania, USA
| | - Mary Jo Pugh
- Va Salt Lake City Health Care System, Informatics, Decision-Enhancement and Analytic Sciences Center, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
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Ma X, Dong Z, Wang Y, Gu P, Fang J, Gao S. Risk Factors Analysis of Thoracic Trauma Complicated With Acute Respiratory Distress Syndrome and Observation of Curative Effect of Lung-Protective Ventilation. Front Surg 2022; 8:826682. [PMID: 35141272 PMCID: PMC8818796 DOI: 10.3389/fsurg.2021.826682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/14/2021] [Indexed: 11/27/2022] Open
Abstract
Purpose To explore the risk factors of acute respiratory distress syndrome (ARDS) secondary to thoracic trauma and the therapeutic effect of protective lung ventilation in patients with acute respiratory distress syndrome complicated with thoracic trauma. Methods We collected 206 patients with thoracic trauma admitted to our hospital from September 2017 to March 2021, counted the incidence of ARDS and analyzed the risk factors of ARDS. To observe the clinical efficacy of the application of lung-protective ventilation therapy in patients with thoracic trauma combined with ARDS. Results Among 206 patients with thoracic trauma, there were 82 cases of combined ARDS, and its incidence was 39.81%. The 82 patients with ARDS were randomly divided into the control group and the observation group with 42 cases each, and different ventilation methods were used for treatment. The results showed that the mechanical ventilation time (MVT) was shorter in the observation group than in the control group, and the incidence of ventilator-associated lung injury (VALI) and case fatality rate (CFR) were lower than those in the control group (P < 0.05). Arterial partial pressure of oxygen (Pa02), arterial blood carbon dioxide partial pressure (PaCO2), and Oxygenation index (arterial partial pressure of oxygen/Fraction of inspiration O2, PaO2/FiO2) were significantly improved better in both groups after treatment; compared with the control group, patients in the observation group had higher Pa02 levels and lower PaCO2 levels at 8 h and 24 h after ventilation (P < 0.05). Multivariate analysis revealed that blunt trauma, massive blood transfusion, procalcitonin (PCT) level, tumor necrosis factor-α (TNF-α) level, and acute physiology and chronic health score (APACHE II) were all risk factors for Thoracic trauma with ARDS. Conclusion Risk factors for the development of ARDS after thoracic trauma are blunt injuries, massive blood transfusion, high PCT and TNF-α levels, and high APACHE II scores, which can be given active interventions in the early stage of clinical practice to improve patient prognosis. The use of protective lung ventilation therapy can improve the clinical outcome of patients with thoracic trauma combined with ARDS, which is important for improving the ventilation effect and respiratory function of patients.
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Affiliation(s)
- Xiaoyu Ma
- Department of Thoracic Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zefang Dong
- Department of Thoracic Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yusuo Wang
- Ningjin County Maternity and Childcare Hospital of Hebei Province Emergency Surgery, Xingtai, China
| | - Peidong Gu
- Ningjin County Maternity and Childcare Hospital of Hebei Province Emergency Surgery, Xingtai, China
| | - Jinghua Fang
- Ningjin County Maternity and Childcare Hospital of Hebei Province Emergency Surgery, Xingtai, China
| | - Shaolin Gao
- Department of Thoracic Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
- *Correspondence: Shaolin Gao
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Huang Y, Zhang H, Yang E, Yue K, Gao X, Dai S, Wei J, Yang Y, Luo P, Li X, Jiang X. Integrated Proteome and Phosphoproteome Analyses Reveal Early- and Late-Stage Protein Networks of Traumatic Brain Injury. J Mol Neurosci 2022; 72:759-771. [PMID: 35023002 DOI: 10.1007/s12031-021-01949-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/21/2021] [Indexed: 11/25/2022]
Abstract
Traumatic brain injury (TBI) is a major public health concern all around the world. Accumulating evidence suggests that pathological processes after brain injury continuously evolve. Here, we identified the differentially expressed proteins (DEPs) and differentially expressed phosphoproteins (DEPPs) in the early and late stages of TBI in mice using TMT labeling, enrichment of Phos affinity followed, and high-resolution LC-MS/MS analysis. Subsequently, integrative analyses, including functional enrichment-based clustering analysis, motif analysis, cross-talk pathway/process enrichment analysis, and protein-protein interaction enrichment analysis were performed to further identify the different and similar pathophysiologic mechanisms in the early and late stage. Our work reveals a map of early and late-stage protein networks in TBI, which shed light on useful biomarkers and the underlying mechanisms in TBI and its sequelae.
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Affiliation(s)
- Yutao Huang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Haofuzi Zhang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Erwan Yang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Kangyi Yue
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Xiangyu Gao
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Shuhui Dai
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Jialiang Wei
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Yuefan Yang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Peng Luo
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
| | - Xin Li
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
| | - Xiaofan Jiang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
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14
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Gao C, Chen X, Xu H, Guo H, Zheng L, Yan Y, Ren Z, Luo C, Gao Y, Wang Z, Tao L, Wang T. Restraint Stress Delays the Recovery of Neurological Impairments and Exacerbates Brain Damages through Activating Endoplasmic Reticulum Stress-mediated Neurodegeneration/Autophagy/Apopotosis post Moderate Traumatic Brain Injury. Mol Neurobiol 2022; 59:1560-1576. [PMID: 35001355 DOI: 10.1007/s12035-022-02735-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 12/30/2021] [Indexed: 11/26/2022]
Abstract
Based on accumulating evidence, patients recovering from mild and moderate traumatic brain injury (TBI) often experience increased sensitivity to stressful events. However, few studies have assessed on the effects and pathophysiological mechanisms of stress on TBI. In the current study, using a mouse model of moderate TBI, we investigated whether restraint stress (RS) regulates secondary neurodegeneration and neuronal cell death, which are commonly associated with neurological dysfunctions. Our data showed that RS significantly reduced body weight recovery, delayed the recovery of neurological functions (motor function, cognitive function and anxiety-like behavior) and exacerbated the brain lesion volume after moderate TBI. Immunofluorescence results indicated that moderate TBI-induced cell insults and blood-brain barrier leakage were aggravated by RS. Further Western blotting experiments showed that RS activated endoplasmic reticulum (ER) stress excessively after moderate TBI and decreased the number of NeuN-positive cells, but increased the number of CHOP/NeuN-co-positive cells by performing immunostaining in the injured cortex after moderate TBI. Moreover, RS increased the ratios of CHOP/Aβ and CHOP/p-Tau co-positive cells in the injured cortex after moderate TBI. However, blocking ER stress with the classic ER stress inhibitor salubrinal remarkably decreased apoptosis and the levels of autophagy-related proteins in the mouse model of moderate TBI plus RS. Collectively, RS delays the recovery of neurological function and deteriorates morphological damage by excessively activating ER stress-mediated neurodegeneration, apoptosis and autophagy after moderate TBI. Thus, monitoring stress levels in patients recovering from non-severe TBI may merit consideration in the future.
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Affiliation(s)
- Cheng Gao
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Xueshi Chen
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Heng Xu
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Hanmu Guo
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Lexin Zheng
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Ya'nan Yan
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Zhiyang Ren
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Chengliang Luo
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Yuan Gao
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Zufeng Wang
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China
| | - Luyang Tao
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China.
| | - Tao Wang
- Department of Forensic Medicine, School of Basic Medicine and Biological Sciences, Affiliated Guangji Hospital, Soochow University, Suzhou, 215123, China.
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15
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Willbold D, Strodel B, Schröder GF, Hoyer W, Heise H. Amyloid-type Protein Aggregation and Prion-like Properties of Amyloids. Chem Rev 2021; 121:8285-8307. [PMID: 34137605 DOI: 10.1021/acs.chemrev.1c00196] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review will focus on the process of amyloid-type protein aggregation. Amyloid fibrils are an important hallmark of protein misfolding diseases and therefore have been investigated for decades. Only recently, however, atomic or near-atomic resolution structures have been elucidated from various in vitro and ex vivo obtained fibrils. In parallel, the process of fibril formation has been studied in vitro under highly artificial but comparatively reproducible conditions. The review starts with a summary of what is known and speculated from artificial in vitro amyloid-type protein aggregation experiments. A partially hypothetic fibril selection model will be described that may be suitable to explain why amyloid fibrils look the way they do, in particular, why at least all so far reported high resolution cryo-electron microscopy obtained fibril structures are in register, parallel, cross-β-sheet fibrils that mostly consist of two protofilaments twisted around each other. An intrinsic feature of the model is the prion-like nature of all amyloid assemblies. Transferring the model from the in vitro point of view to the in vivo situation is not straightforward, highly hypothetic, and leaves many open questions that need to be addressed in the future.
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Affiliation(s)
- Dieter Willbold
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany.,Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology (State University), 141700 Dolgoprudny, Russia
| | - Birgit Strodel
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Institute of Theoretical and Computational Chemistry, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Gunnar F Schröder
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Physics Department, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Wolfgang Hoyer
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Henrike Heise
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
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