Abstract:
BACKGROUND:Brain circulation disorders such as chronic cerebral hypoperfusion have been associated with a decline in cognitive function during the development of dementia. Astrocytes together with microglia participate in the immune response in the CNS and make them potential sentinels in the brain parenchyma. In addition, astrocytes coverage integrity has been related to brain homeostasis. Currently, physical exercise has been proposed as an effective intervention to promote brain function improvement. However, the neuroprotective effects of early physical exercise on the astrocyte communication with the microcirculation and the microglial activation in a chronic cerebral hypoperfusion model are still unclear. The aim of this study was to investigate the impact of early intervention with physical exercise on cognition, brain microcirculatory, and inflammatory parameters in an experimental model of chronic cerebral hypoperfusion induced by permanent bilateral occlusion of the common carotid arteries (2VO). METHODS:Wistar rats aged 12 weeks were randomly divided into four groups: Sham-sedentary group (Sham-Sed), Sham-exercised group (Sham-Ex), 2VO-sedentary group (2VO-Sed), and 2VO-exercised group (2VO-Ex). The early intervention with physical exercise started 3 days after 2VO or Sham surgery during 12 weeks. Then, the brain functional capillary density and endothelial-leukocyte interactions were evaluated by intravital microscopy; cognitive function was evaluated by open-field test; hippocampus postsynaptic density protein 95 and synaptophysin were evaluated by western blotting; astrocytic coverage of the capillaries, microglial activation, and structural capillary density were evaluated by immunohistochemistry. RESULTS:Early moderate physical exercise was able to normalize functional capillary density and reduce leukocyte rolling in the brain of animals with chronic cerebral hypoperfusion. These effects were accompanied by restore synaptic protein and the improvement of cognitive function. In addition, early moderate exercise improves astrocytes coverage in blood vessels of the cerebral cortex and hippocampus, decreases microglial activation in the hippocampus, and improves structural capillaries in the hippocampus. CONCLUSIONS:Microcirculatory and inflammatory changes in the brain appear to be involved in triggering a cognitive decline in animals with chronic cerebral ischemia. Therefore, early intervention with physical exercise may represent a preventive approach to neurodegeneration caused by chronic cerebral hypoperfusion.
journal_name
J Neuroinflammationjournal_title
Journal of neuroinflammationauthors
Leardini-Tristão M,Andrade G,Garcia C,Reis PA,Lourenço M,Moreira ETS,Lima FRS,Castro-Faria-Neto HC,Tibirica E,Estato Vdoi
10.1186/s12974-020-01771-ysubject
Has Abstractpub_date
2020-04-16 00:00:00pages
117issue
1issn
1742-2094pii
10.1186/s12974-020-01771-yjournal_volume
17pub_type
杂志文章abstract:BACKGROUND:The CD133(+) stem cell population in recurrent gliomas is associated with clinical features such as therapy resistance, blood-brain barrier disruption and, hence, tumor infiltration. Screening of a large panel of glioma samples increasing histological grade demonstrated frequencies of CD133(+) cells which co...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-6-8
更新日期:2009-03-09 00:00:00
abstract:BACKGROUND:The chemokine interleukin-8 (IL-8) and its receptor CXCR2 contribute to chemotactic responses in Alzheimer's disease (AD); however, properties of the ligand and receptor have not been characterized in animal models of disease. The primary aim of our study was to examine effects of pharmacological antagonism ...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-015-0339-z
更新日期:2015-08-09 00:00:00
abstract:BACKGROUND:Elevated levels of oncostatin M (OSM), an interleukin-6 cytokine family member, have been observed in HIV-1-associated neurocognitive disorders (HAND) and Alzheimer's disease. However, the function of OSM in these disease conditions is unclear. Since deficient glutamate uptake by astrocytes is instrumental i...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0613-8
更新日期:2016-06-10 00:00:00
abstract:BACKGROUND:Plasminogen activation is a ubiquitous source of fibrinolytic and proteolytic activity. Besides its role in prevention of thrombosis, plasminogen is involved in inflammatory reactions in the central nervous system. Plasminogen has been detected in the cerebrospinal fluid (CSF) of patients with inflammatory d...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-014-0154-y
更新日期:2014-09-16 00:00:00
abstract::BACKGROUND: Oligodendrocytes, neurons, astrocytes, microglia, and endothelial cells are capable of synthesizing complement inhibitor proteins. Oligodendrocytes are vulnerable to complement attack, which is particularly observed in multiple sclerosis. This vulnerability may be related to a deficiency in their ability t...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-1-17
更新日期:2004-08-24 00:00:00
abstract:BACKGROUND:Monocyte infiltration is involved in the pathogenesis of many retinal degenerative conditions. This process traditionally depends on local expression of chemokines, though the roles of many of these in the degenerating retina are unclear. Here, we investigate expression and in situ localization of the broad ...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-014-0224-1
更新日期:2015-01-17 00:00:00
abstract::Traumatic brain injury (TBI) is an important cause of disability and mortality in the western world. While the initial injury sustained results in damage, it is the subsequent secondary cascade that is thought to be the significant determinant of subsequent outcomes. The changes associated with the secondary injury do...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章,评审
doi:10.1186/s12974-018-1066-z
更新日期:2018-01-22 00:00:00
abstract:BACKGROUND:Ventral root avulsion is a proximal nerve root lesion in which ventral motor nerve rootlets are torn from surface of the spinal cord, resulting in extensive death of motoneurons. It has been previously shown that if such lesioning is performed in an animal with experimental autoimmune encephalomyelitis (EAE)...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-7-29
更新日期:2010-05-04 00:00:00
abstract:BACKGROUND:Parkinson's disease (PD) is frequently associated with gastrointestinal (GI) symptoms, including constipation and defecatory dysfunctions. The mechanisms underlying such disorders are still largely unknown, although the occurrence of a bowel inflammatory condition has been hypothesized. This study examined t...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0608-5
更新日期:2016-06-13 00:00:00
abstract:BACKGROUND:The cellular prion protein (PrPC) is an evolutionary conserved protein abundantly expressed not only in the central nervous system but also peripherally including the immune system. A line of Norwegian dairy goats naturally devoid of PrPC (PRNP Ter/Ter) provides a novel model for studying PrPC physiology. M...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-017-0879-5
更新日期:2017-05-22 00:00:00
abstract:BACKGROUND:Alzheimer's disease (AD) is characterized by extracellular β-amyloid (Aβ) plaques, neurofibrillary tangles (NFTs), and microglia-dominated neuroinflammation. The Nogo/NgR signal pathway is involved in AD pathological features, but the detailed mechanism needs further investigation. Our previous studies have ...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0522-x
更新日期:2016-03-03 00:00:00
abstract::Interleukin (IL)-18 is a cytokine isolated as an important modulator of immune responses and subsequently shown to be pleiotropic. IL-18 and its receptors are expressed in the central nervous system (CNS) where they participate in neuroinflammatory/neurodegenerative processes but also influence homeostasis and behavio...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章,评审
doi:10.1186/1742-2094-7-9
更新日期:2010-01-29 00:00:00
abstract:BACKGROUND:Cranial radiotherapy is used to treat tumors of the central nervous system (CNS), as well as non-neoplastic conditions such as arterio-venous malformations; however, its use is limited by the tolerance of adjacent normal CNS tissue, which can lead to devastating long-term sequelae for patients. Despite decad...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0496-8
更新日期:2016-02-03 00:00:00
abstract:BACKGROUND:Neuroinflammation and demyelination have been suggested as mechanisms causing HIV-1 associated neurocognitive disorder (HAND). This cross-sectional cohort study explores the potential role of antibodies to myelin oligodendrocyte glycoprotein (MOG), a putative autoantigen in multiple sclerosis, in the pathoge...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-7-79
更新日期:2010-11-17 00:00:00
abstract:BACKGROUND:Traumatic brain injury (TBI) initiates a neuroinflammatory cascade that contributes to substantial neuronal damage and behavioral impairment, and Toll-like receptor 4 (TLR4) is an important mediator of thiscascade. In the current study, we tested the hypothesis that curcumin, a phytochemical compound with po...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-11-59
更新日期:2014-03-27 00:00:00
abstract:BACKGROUND:Multiple sclerosis (MS) is an autoimmune demyelinating disease that affects the central nervous system (CNS), leading to neurodegeneration and chronic disability. Accumulating evidence points to a key role for neuroinflammation, oxidative stress, and excitotoxicity in this degenerative process. System xc- or...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0787-0
更新日期:2017-01-13 00:00:00
abstract:BACKGROUND:Interleukin-33 (IL-33) is increasingly being recognized as a key immunomodulatory cytokine in many neurological diseases. METHODS:In the present study, wild-type (WT) and IL-33-/- mice received intracerebroventricular (i.c.v.) injection of lipopolysaccharide (LPS) to induce neuroinflammation. Intravital mic...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-018-1169-6
更新日期:2018-05-04 00:00:00
abstract:BACKGROUND:Systemic bacterial infections often result in enduring cognitive impairment and are a risk factor for dementia. There are currently no effective treatments for infection-induced cognitive impairment. Previous studies have shown that intermittent fasting (IF) can increase the resistance of neurons to injury a...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-11-85
更新日期:2014-05-06 00:00:00
abstract:BACKGROUND:Traumatic brain injury (TBI) results in long-term neurological deficits, which may be mediated in part by pro-inflammatory responses in both the injured brain and the circulation. Inflammation may be involved in the subsequent development of neurodegenerative diseases and post-injury seizures. The p75 neurot...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0544-4
更新日期:2016-04-22 00:00:00
abstract:BACKGROUND:Complement activation via the lectin activation pathway (LP) has been identified as the key mechanism behind post-ischemic tissue inflammation causing ischemia-reperfusion injury (IRI) which can significantly impact the clinical outcome of ischemic disease. This work defines the contributions of each of the ...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0684-6
更新日期:2016-08-30 00:00:00
abstract::Although neuroinflammation has been studied extensively in animal models of cerebral ischemia, their contrasting functions are still not completely understood. A major participant in neuroinflammation is microglia and microglial activation usually regulated by the chemokine CX3CL1 (fractalkine) and its receptor, CX3CR...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章,收录出版
doi:10.1186/1742-2094-11-13
更新日期:2014-01-22 00:00:00
abstract:BACKGROUND:Pneumococcal meningitis is the most common and severe form of bacterial meningitis. Fatality rates are substantial, and long-term sequelae develop in about half of survivors. Disease outcome has been related to the severity of the pro-inflammatory response in the subarachnoid space. The complement system, wh...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-016-0770-9
更新日期:2017-01-03 00:00:00
abstract:BACKGROUND:Immunoglobulin G (IgG) effector functions are regulated by the composition of glycans attached to a conserved N-glycosylation site in the Fc part. Intrathecal production of IgG, especially IgG1, is a hallmark of multiple sclerosis (MS), but nothing is known about IgG Fc glycosylation in MS and in cerebrospin...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-015-0450-1
更新日期:2015-12-18 00:00:00
abstract::We report on a serum autoantibody associated with cerebellar ataxia. Immunohistochemical studies of sera from four patients referred for autoantibody testing revealed binding of high-titer (up to 1:5,000) IgG antibodies, mainly IgG1, to the molecular layer, Purkinje cell layer, and white matter on mouse, rat, porcine,...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-014-0206-3
更新日期:2014-12-11 00:00:00
abstract:BACKGROUND:Usutu virus (USUV) is an emerging neurotropic arthropod-borne virus recently involved in massive die offs of wild birds predominantly reported in Europe. Although primarily asymptomatic or presenting mild clinical signs, humans infected by USUV can develop neuroinvasive pathologies (including encephalitis an...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-020-02060-4
更新日期:2021-01-06 00:00:00
abstract:INTRODUCTION:We have demonstrated previously that the intravenous delivery of multipotent adult progenitor cells (MAPC) after traumatic brain injury affords neuroprotection via interaction with splenocytes, leading to an increase in systemic anti-inflammatory cytokines. We hypothesize that the observed modulation of th...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-9-228
更新日期:2012-09-28 00:00:00
abstract:BACKGROUND:Recent evidence suggests that exposure to intrauterine inflammation causes acute fetal brain injury and is linked to a spectrum of neurobehavioral disorders. In a rodent model of intrauterine inflammation induced by lipopolysaccharide (LPS) exposure in utero, activated microglia can be detected in the hippoc...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-017-0951-1
更新日期:2017-09-05 00:00:00
abstract:BACKGROUND:The loss of locus coeruleus noradrenergic (LC/NE) neurons in the brainstem is reported in multiple neurodegenerative disorders, including Parkinson's disease (PD). However, the mechanisms remain unclear. Strong evidence suggested that microglia-mediated neuroinflammation contributes to neurodegeneration in P...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-020-01823-3
更新日期:2020-05-06 00:00:00
abstract:BACKGROUND:Tumor necrosis factor-α (TNF-α) is an important inflammatory factor produced by activated macrophages and monocytes and plays an important role in the pathogenesis of diabetic peripheral neuropathy (DPN). To evaluate the effect of TNF-α signaling suppression and the potential of TNF-α in the treatment of DPN...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-10-69
更新日期:2013-06-04 00:00:00
abstract:BACKGROUND:The glutamine synthetase (GS), an astrocyte-specific enzyme, is involved in lipopolysaccharide (LPS)-induced inflammation which activates the mitogen-activated protein kinase (MAPK) signaling. Endocannabinoid 2-arachidonyl glycerol (2-AG) has been described to serve as an endogenous mediator of analgesia and...
journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-018-1254-x
更新日期:2018-08-03 00:00:00