摘要
背景:载脂蛋白E 4等位基因的存在是否与调节异常衰老的海马连接网络相关尚未完全阐明。 目的:研究在4型等位基因的阿尔茨海默病型、携带者和非携带者的神经退行性病变患者中,这种功能连接的等位基因依赖性差异。 方法:采用基于种子的连通性方法。两组在人口统计学、脑结构容积测量和认知轮廓上相似。 结果:ε4-carriers增加了连接的种子区之间的左侧海马和1)左岛叶、外侧前额叶区和2)侧右顶叶。此外,4型携带者的海马-顶叶连接与记忆成绩呈正相关,表明组间差异反映了代偿过程。功能连通性的回顾性分析基于患者从ADNI计划证实了这种模式 结论:我们认为,增加连接区域的默认模式网络(DMN)反映外部补偿补充区,病理缠绕之间的DMN和凸显网络作为一个全球性的ε4源环路中断部分。这些差异表明,ε4等位基因是即使在神经退行性疾病的前驱期与DMN网络故障更深刻的程度有关。
关键词: 功能连接,抑制假说,后扣带回、海马;阿尔茨海默病,网络中断。
Current Alzheimer Research
Title:ApoE ε4 Allele Related Alterations in Hippocampal Connectivity in Early Alzheimer’s Disease Support Memory Performance
Volume: 14 Issue: 7
关键词: 功能连接,抑制假说,后扣带回、海马;阿尔茨海默病,网络中断。
摘要: Background: Whether the presence of the Apolipoprotein E ε4 allele modulates hippocampal connectivity networks in abnormal ageing has yet to be fully clarified.
Objective: Allele-dependent differences in this pattern of functional connectivity were investigated in patients with very mild neurodegeneration of the Alzheimer’s type, carriers and non-carriers of the ε4 allele. Method: A seed-based connectivity approach was used. The two groups were similar in demographics, volumetric measures of brain structure, and cognitive profiles. Results: ε4-carriers had increased connectivity between the seed area in the left hippocampus and 1) a left insular/lateral prefrontal region and 2) the contralateral right parietal cortex. Moreover, hippocampus- to-parietal connectivity in the group of ε4 carriers was positively associated with memory performance, indicating that the between-group difference reflects compensatory processes. Retrospective analyses of functional connectivity based on patients from the ADNI initiative confirmed this pattern. Conclusion: We suggest that increased connectivity with areas external to the Default Mode Network (DMN) reflects both compensatory recruitment of additional areas, and pathological interwining between the DMN and the salience network as part of a global ε4-dependent circuital disruption. These differences indicate that the ε4 allele is associated with a more profound degree of DMN network breakdown even in the prodromal stage of neurodegeneration.Export Options
About this article
Cite this article as:
ApoE ε4 Allele Related Alterations in Hippocampal Connectivity in Early Alzheimer’s Disease Support Memory Performance, Current Alzheimer Research 2017; 14 (7) . https://dx.doi.org/10.2174/1567205014666170206113528
DOI https://dx.doi.org/10.2174/1567205014666170206113528 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |

- Author Guidelines
- Bentham Author Support Services (BASS)
- Graphical Abstracts
- Fabricating and Stating False Information
- Research Misconduct
- Post Publication Discussions and Corrections
- Publishing Ethics and Rectitude
- Increase Visibility of Your Article
- Archiving Policies
- Peer Review Workflow
- Order Your Article Before Print
- Promote Your Article
- Manuscript Transfer Facility
- Editorial Policies
- Allegations from Whistleblowers
- Announcements
Related Articles
-
Network Analysis of Depressive Symptomatology in Elderly Patients with Major Depressive Disorder
Current Psychiatry Research and Reviews Effects of Folic Acid and Vitamin B12, Alone and in Combination on Cognitive Function and Inflammatory Factors in the Elderly with Mild Cognitive Impairment: A Single-blind Experimental Design
Current Alzheimer Research New Promises to Cure Cancer and Other Genetic Diseases/Disorders: Epi-drugs Through Epigenetics
Current Topics in Medicinal Chemistry An Appraisal of Current Pharmacological Perspectives of Sesamol: A Review
Mini-Reviews in Medicinal Chemistry EHT0202 in Alzheimers Disease: A 3-Month, Randomized, Placebo- Controlled, Double-Blind Study
Current Alzheimer Research Lafora Progressive Myoclonus Epilepsy: Recent Insights into Cell Degeneration
Recent Patents on Endocrine, Metabolic & Immune Drug Discovery (Discontinued) The Critical Period for Neuroprotection by Estrogen Replacement Therapy and the Potential Underlying Mechanisms
Current Neuropharmacology Blood-Brain Barrier P-Glycoprotein Function in Neurodegenerative Disease
Current Pharmaceutical Design Lithium in Psychiatry-The Benefits and Risks Associated with the Lithium Salts Treatment in Affective Disorders
Current Psychopharmacology Synthesis and Biological Interest of Structured Docosahexaenoic Acid–Containing Triacylglycerols and Phospholipids
Current Organic Chemistry Mechanisms of HIV Transcriptional Regulation by Drugs of Abuse
Current HIV Research The Regulation of Brain Nucleoside Utilization
Current Metabolomics Therapeutic Strategy of Erythropoietin in Neurological Disorders
CNS & Neurological Disorders - Drug Targets Conformational Changes and Aggregation of Expanded Polyglutamine Proteins as Therapeutic Targets of the Polyglutamine Diseases: Exposed β-Sheet Hypothesis
Current Pharmaceutical Design The Role of Atypical Antipsychotic Agents in the Treatment of Schizophrenia and Schizoaffective Disorders in the Elderly
Current Drug Safety Definition of Genes and Paths Involved in Alzheimers Disease: Using Gene Expression Profiles and Chemical Genetics at the Mouse Brain Level
Current Genomics Vascular Effects of Estrogenic Menopausal Hormone Therapy
Reviews on Recent Clinical Trials Omega-3 Fatty Acids: Role in Metabolism and Cardiovascular Disease
Current Pharmaceutical Design Multiple Mechanisms of Cytokine Action in Neurodegenerative and Psychiatric States: Neurochemical and Molecular Substrates
Current Pharmaceutical Design Hypertension, Cognitive Impairment and Dementia: An Epidemiological Perspective
Current Hypertension Reviews