Abstract:
BACKGROUND:The control of viral infections in the brain involves the activation of microglial cells, the macrophages of the brain that are constantly surveying the central nervous system, and the production of amyloid-beta (Aβ) as an anti-microbial molecule. Recent findings suggest a possible implication of HHV-6A in AD. We evaluated the effect of HHV-6A infection on microglial cell expression Aβ and the activation status, determined by TREM2, ApoE, cytokines, and tau expression. METHODS:We have infected microglial cells (HMC3, ATCC®CRL-3304), in monolayer and human peripheral blood monocyte-derived microglia (PBM-microglia) spheroid 3D model, with HHV-6A (strain U1102) cell-free virus inocula with 100 genome equivalents per 1 cell. We collected the cells 1, 3, 7, and 14 days post-infection (d.p.i.) and analyzed them for viral DNA and RNA, ApoE, Aβ (1-40, 1-42), tau, and phospho-tau (Threonine 181) by real-time immunofluorescence and cytokines by immunoenzymatic assay. RESULTS:We observed a productive infection by HHV-6A. The expression of Aβ 1-42 increased from 3 d.p.i., while no significant induction was observed for Aβ 1-40. The HHV-6A infection induced the activation (TREM2, IL-1beta, ApoE) and migration of microglial cells. The secretion of tau started from 7 d.p.i., with an increasing percentage of the phosphorylated form. CONCLUSIONS:In conclusion, microglial cells are permissive to HHV-6A infection that induces the expression of Aβ and an activation status. Meanwhile, we hypothesize a paracrine effect of HHV-6A infection that activates and induces microglia migration to the site of infection.
journal_name
Alzheimers Res Therjournal_title
Alzheimer's research & therapyauthors
Bortolotti D,Gentili V,Rotola A,Caselli E,Rizzo Rdoi
10.1186/s13195-019-0552-6subject
Has Abstractpub_date
2019-12-12 00:00:00pages
104issue
1issn
1758-9193pii
10.1186/s13195-019-0552-6journal_volume
11pub_type
杂志文章abstract:INTRODUCTION:The goal was to identify which neurochemicals differ in professional athletes with repetitive brain trauma (RBT) when compared to healthy controls using a relatively new technology, in vivo Localized COrrelated SpectroscopY (L-COSY). METHODS:To achieve this, L-COSY was used to examine five former professi...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-015-0094-5
更新日期:2015-03-15 00:00:00
abstract:BACKGROUND:Cognitive composite scores are used as the primary outcome measures for Alzheimer's disease (AD) prevention trials; however, the extent to which these composite measures correlate with AD pathology has not been fully investigated. Since many on-going AD prevention studies are testing therapies that target ei...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-018-0401-z
更新日期:2018-09-11 00:00:00
abstract::Alzheimer's disease (AD) is the most common cause of dementia and a major contributor to disability and dependency among older people. AD pathogenesis is associated with the accumulation of amyloid-beta protein (Aβ) and/or hyperphosphorylated tau protein in the brain. At present, current therapies provide temporary sy...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,评审
doi:10.1186/alzrt237
更新日期:2014-01-30 00:00:00
abstract:BACKGROUND:Alzheimer's disease (AD) is a progressive neurodegenerative disorder and the most common cause of dementia in the elderly population. In this study, we used the APP/PS1 transgenic mouse model to explore the feasibility of using diffusion kurtosis imaging (DKI) as a tool for the early detection of microstruct...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-017-0329-8
更新日期:2018-01-09 00:00:00
abstract:BACKGROUND:Subjective cognitive decline (SCD) is a potential risk factor for dementia. We aimed to investigate the association between SCD and subsequent dementia in a nationwide population-based cohort in South Korea. METHODS:This cohort included 579,710 66-year-old adults who were followed for a total of 3,870,293 p...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-020-00618-1
更新日期:2020-05-06 00:00:00
abstract:BACKGROUND:Several monoclonal antibodies for the treatment of Alzheimer's disease (AD) have been in development over the last decade. BAN2401 is a monoclonal antibody that selectively binds soluble amyloid β (Aβ) protofibrils. METHODS:Here we describe the first clinical study with BAN2401. Safety and tolerability were...
journal_title:Alzheimer's research & therapy
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1186/s13195-016-0181-2
更新日期:2016-04-06 00:00:00
abstract:INTRODUCTION:Subcortical hyperintensities (SHs) are radiological entities commonly observed on magnetic resonance imaging (MRI) of patients with Alzheimer's disease (AD) and normal elderly controls. Although the presence of SH is believed to indicate some form of subcortical vasculopathy, pathological heterogeneity, me...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/alzrt279
更新日期:2014-08-11 00:00:00
abstract:BACKGROUND:With upcoming therapeutic interventions for patients with primary progressive aphasia (PPA), instruments for the follow-up of patients are needed to describe disease progression and to evaluate potential therapeutic effects. So far, volumetric brain changes have been proposed as clinical endpoints in the lit...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-018-0345-3
更新日期:2018-04-25 00:00:00
abstract:BACKGROUND:Intracerebral inoculation of extracts from post-mortem human Alzheimer's disease brains into mice produces a prion-like spreading effect of amyloid-β. The differences observed between these extracts and the synthetic peptide, in terms of amyloid-β internalization and seed and cell-to-cell transmission of cyt...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-019-0513-0
更新日期:2019-06-29 00:00:00
abstract:BACKGROUND:[18F]FDG-PET hypometabolism patterns are indicative of different neurodegenerative conditions, even from the earliest disease phase. This makes [18F]FDG-PET a valuable tool in the diagnostic workup of neurodegenerative diseases. The utility of [18F]FDG-PET in dementia with Lewy bodies (DLB) needs further val...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-019-0473-4
更新日期:2019-02-23 00:00:00
abstract:BACKGROUND:The pathophysiology of neurodegeneration is complex. Its diagnosis requires an early identification of sequential changes in several hallmarks in the brains of affected subjects. The presence of brain pathology can be visualized in the cerebrospinal fluid (CSF) by protein profiling. It is clear that the fiel...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-017-0265-7
更新日期:2017-06-06 00:00:00
abstract:BACKGROUND:The application of advanced sequencing technologies and improved mass-spectrometry platforms revealed significant changes in gene expression and lipids in Alzheimer's disease (AD) brain. The results so far have prompted further research using "multi-omics" approaches. These approaches become particularly rel...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-019-0558-0
更新日期:2019-12-30 00:00:00
abstract:BACKGROUND:Alzheimer's disease (AD) is a complex neurodegenerative disorder characterized by neuropathologic changes involving beta-amyloid (Aβ), tau, neuronal loss, and other associated biological events. While levels of cerebrospinal fluid (CSF) Aβ and tau peptides have enhanced the antemortem detection of AD-specifi...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,多中心研究
doi:10.1186/s13195-018-0426-3
更新日期:2018-09-25 00:00:00
abstract::Lewy body dementia (LBD), including dementia with Lewy bodies and Parkinson's disease dementia, affects over a million people in the USA and has a substantial impact on patients, caregivers, and society. Symptomatic treatments for LBD, which can include cognitive, neuropsychiatric, autonomic, sleep, and motor features...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,评审
doi:10.1186/s13195-020-00703-5
更新日期:2020-10-29 00:00:00
abstract::The cerebrospinal fluid (CSF) biochemical markers (biomarkers) Amyloidβ 42 (Aβ42), total Tau (T-tau) and Tau phosphorylated at threonine 181 (P-tau181) have proven diagnostic accuracy for mild cognitive impairment and dementia due to Alzheimer's Disease (AD). In an effort to improve the accuracy of an AD diagnosis, it...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,评审
doi:10.1186/s13195-019-0485-0
更新日期:2019-04-22 00:00:00
abstract:BACKGROUND:Identifying and understanding the functional role of genetic risk factors for Alzheimer disease (AD) has been complicated by the variability of genetic influences across brain regions and confounding with age-related neurodegeneration. METHODS:A gene co-expression network was constructed using data obtained...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-020-00674-7
更新日期:2020-09-02 00:00:00
abstract:BACKGROUND:Neuroinflammation has gained increasing attention as a potential contributing factor in Alzheimer's disease (AD) pathology. A clinical cerebrospinal fluid biomarker capable of monitoring this process during the course of the disease has yet to emerge, chiefly owing to contradictory research findings. In this...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-018-0353-3
更新日期:2018-02-26 00:00:00
abstract:BACKGROUND:Theory of mind (ToM) refers to the ability to attribute mental states, thoughts (cognitive component) or feelings (affective component) to others. This function has been studied in many neurodegenerative diseases; however, to our knowledge, no studies investigating ToM in dementia with Lewy bodies (DLB) have...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-016-0179-9
更新日期:2016-03-16 00:00:00
abstract:INTRODUCTION:The long-term efficacy and safety of donepezil 10 mg in patients with dementia with Lewy bodies (DLB) were investigated in a 52-week Phase 3 trial. METHODS:This 52-week study consisted of 16-week randomized placebo-controlled (RCT) and 36-week open-label extension phases. Of 142 DLB patients enrolled in t...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-014-0081-2
更新日期:2015-02-03 00:00:00
abstract:BACKGROUND:Optical coherence tomography (OCT) of the retina is a fast and easily accessible tool for the quantification of retinal structural measurements. Multiple studies show that patients with Alzheimer's disease (AD) exhibit thinning in several retinal layers compared to age-matched controls. Subjective cognitive ...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-020-00602-9
更新日期:2020-03-31 00:00:00
abstract:BACKGROUND:Whether age at onset influences Alzheimer's disease (AD) progression and the effectiveness of cholinesterase inhibitor (ChEI) therapy is not clear. We aimed to compare longitudinal cognitive and global outcomes in ChEI-treated patients with early-onset Alzheimer's disease (EOAD) versus late-onset Alzheimer's...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,多中心研究
doi:10.1186/s13195-017-0294-2
更新日期:2017-08-31 00:00:00
abstract:BACKGROUND:We developed multifactorial models for predicting incident dementia and brain pathology in the oldest old using the Vantaa 85+ cohort. METHODS:We included participants without dementia at baseline and at least 2 years of follow-up (N = 245) for dementia prediction or with autopsy data (N = 163) for patholog...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-018-0450-3
更新日期:2019-01-22 00:00:00
abstract:BACKGROUND:Cerebrovascular pathology, quantified by white matter lesions (WML), is known to affect cognition in aging, and is associated with an increased risk of dementia. The present study aimed to investigate whether higher functional connectivity in cognitive control networks mitigates the detrimental effect of WML...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-018-0434-3
更新日期:2018-10-27 00:00:00
abstract:BACKGROUND:Association between kidney dysfunction and dementia has been studied in western cohorts, but with inconsistent conclusions which may be due to the different measurements of kidney function. We aim to verify the hypothesis that lower levels of kidney function would be associated with increased risk of inciden...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-020-00729-9
更新日期:2021-01-11 00:00:00
abstract:BACKGROUND:Errorless learning (EL) is a method for optimizing learning, which uses feed-forward instructions in order to prevent people from making mistakes during the learning process. The majority of previous studies on EL taught patients with dementia artificial tasks of little or no relevance for their daily lives....
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1186/s13195-017-0247-9
更新日期:2017-03-23 00:00:00
abstract:BACKGROUND:Synapse damage and loss are fundamental to the pathophysiology of Alzheimer's disease (AD) and lead to reduced cognitive function. The goal of this review is to address the challenges of forging new clinical development approaches for AD therapeutics that can demonstrate reduction of synapse damage or loss. ...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,评审
doi:10.1186/s13195-020-00588-4
更新日期:2020-03-02 00:00:00
abstract:INTRODUCTION:There has been a significant increase in the use of testosterone in aging men, but little investigation into its impact on men with Alzheimer's disease (AD). The findings of the few studies that have been done are inconsistent. In the present study, we investigated the relationship between total testostero...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-015-0107-4
更新日期:2015-05-01 00:00:00
abstract:BACKGROUND:The retina and brain share many neuronal and vasculature characteristics. We investigated the retinal microvasculature in Alzheimer's disease (AD) and mild cognitive impairment (MCI) using optical coherence tomography angiography (OCTA). METHODS:In this cross-sectional study, 24 AD participants, 37 MCI part...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-020-00724-0
更新日期:2020-12-04 00:00:00
abstract:BACKGROUND:Disclosure of amyloid positron emission tomography (PET) results to individuals without dementia has become standard practice in secondary prevention trials and also increasingly occurs in clinical practice. However, this is controversial given the current lack of understanding of the predictive value of a P...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章
doi:10.1186/s13195-018-0398-3
更新日期:2018-07-28 00:00:00
abstract:BACKGROUND:The concept of dependence has been proposed as a unified representation of disease severity to quantify and stage disease progression in a manner more informative to patients, caregivers, and healthcare providers. METHODS:This paper provides a review of the Dependence Scale (DS) as a quantitative measure of...
journal_title:Alzheimer's research & therapy
pub_type: 杂志文章,评审
doi:10.1186/s13195-018-0414-7
更新日期:2018-08-13 00:00:00