Clinical and biomarker studies in Alzheimer's disease and related disorders

阿尔茨海默病及相关疾病的临床和生物标志物研究

基本信息

项目摘要

Biomarkers for Alzheimer's Disease (AD) and other neurodegenerative, neurological and psychiatric diseases The Human Neuroscience Section pioneered biomarker studies using blood Extracellular Vesicles (EVs, aka exosomes) enriched for neuronal origin (isolated by immunoaffinity capture targeting neuronal surface markers, such as L1CAM), or astrocytic origin (isolated by immunoaffinity capture tarheting astrocytic surface marker GLAST). To date, we have conducted scores of case control studies measuring exosomal beta-amyloid, tau/p-tau, Ser and Tyr phosphorylated IRS-1, synaptic markers, complement, mitochondrial proteins and other signaling mediators, in AD and control subjects. We have found multiple disease-associated differences that, for some proteins, may accurately discriminate between the two groups. In addition, biomarker abnormalities may be present at the preclinical stage and may predict AD and related dementias (ADRD). We have expanded the use of exosome biomarkers in other neurological and psychiatric disorders, demonstrating their ability to identify patients with Parkinson's disease (PD), Multiple Sclerosis, Traumatic Brain Injury, Restless Legs Syndrome, Covid-19 infection / long COVID and neurological abnormalities, Bipolar Disorder, and Schizophrenia (and also animal models of AD). Moreover, we have demonstrated the ability of exosome biomarkers to assess target engagement and response to experimental therapeutics in clinical trials involving patients with AD, PD, and bipolar disorder. We recently showed that exosome biomarkers predict future cognitive decline and future AD diagnosis in large preclinical cohorts from the Baltimore Longitudinal Study on Aging, the Wisconsin Registry for Alzheimer's Prevention, and Atherosclerotic Risk in Communities. In addition, we showed that exosome biomarkers predict treatment response and show target engagement in clinical trials of metabolic interventions in AD (intranasal insulin) and PD (exenatide), as well as anti-inflammatory treatment infliximab in Bipolar Disorder. One major goal for the coming year is to conduct studies seeking to demonstrate the relationship between exosomal markers and other biomarkers for AD (PET, CSF) in large preclinical/early clinical cohorts. These studies are needed to assess longitudinal changes in exosome markers and their potential to predict AD at the preclinical stage, track disease progression and predict conversion from MCI to AD. We are in the process of analyzing samples from a large cohort of participants in the Women's Health Initiative Memory Study - Long Life Study to assess the relationship of exosome biomarkers with cognitive resilience and APOE e4 genotype. In addition we intend to further validate exosome biomarkers against cognitive performance, amyloid and tau PET deposition using longitudinal cohorts (Harvard Aging Brain Study and CHARIOT-PRO). In addition to a main focus on AD, we are conducting exosome biomarker studies in vascular cognitive impairment/vascular dementia, Parkinson's disease, Lewy Body disease, Multiple Systems Atrophy, Traumatic Brain Injury, Restless Legs Syndrome, Multiple Sclerosis, long COVID, Schizophrenia, Depression, and Bipolar Disorder. In addition, we have employed a novel Magnetic Resonance Spectroscopy (MRS) methodology at the NIA 3T MRI facility, which allows us to obtain in vivo measures on brain metabolites (glucose, lactate, ketone bodies) and neurotransmitters (glutamate and GABA), which are relevant to AD pathogenesis. Previously, we showed higher glucose and lactate, and lower glutamate and GABA in patients compared to controls, suggesting that these MRS markers may be used as diagnostic biomarkers for AD. Glucose concentration is positively correlated with age. Clinical studies in cognitive aging/prevention of cognitive decline We completed a study of Intermittent caloric restriction (CR)implementing 5-2 CR (alternating 5 days of regular calorie intake and 2 days of CR). This is a 8-week study of 5-2 CR in overweight middle aged subjects to assess potential beneficial effects on insulin resistance, brain metabolism, cognitive performance, fMRI activity and biomarkers. We are currently analyzing outcomes. 5-2 CR is a candidate intervention for primary prevention of AD and cognitive aging at midlife. Moreover, we are conducting a randomized controlled study of an oral ketone ester in middle aged individuals with metabolic syndrome. Using cognitive testing, as well as MRS and exosome biomarkers, we aim to demonstrate an increase in brain ketone concentration and a switch of brain metabolism towards ketone utilization, alongside improvements in cognitive performance. We have formed a collaboration with Investigators at McGill University, Canada, who plan to start a clinical trial of intranasal insulin in the peri-operative period of heart surgery patients to prevent post-operative cognitive decline. Our main goal is to conduct exosome biomarker analysis showing target engagement and pharmacodynamic response to intranasal insulin. The project has received funding from the Alzheimer's Drug Discovery Foundation. In collaboration with Dr. Mohamad El Haj from University of Lille, France, we have been involved in the design and analysis of clinical studies on cognitive features of Alzheimer's disease. For instance, we looked at autobiographical generation of past and future events in a cohort of AD patients compared to controls. We found that future and past events are more similar in patients compared to controls and that the ability to generate future events is closely related with the patient's episodic memory. In addition, the ability to generate future events was associated with Frontal Lobe functions. These findings suggest that remembering the past and imagining the future rely on common brain structures, which are both impaired in AD. We have also been studying the psychological impact of COVID-19 on patients with AD, their families and healthcare providers and geriatric facility personnel.

项目成果

期刊论文数量(77)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Clinical and neurocognitive aspects of hallucinations in Alzheimer's disease.
阿尔茨海默氏病幻觉的临床和神经认知方面。
  • DOI:
    10.1016/j.neubiorev.2017.02.021
  • 发表时间:
    2017-12
  • 期刊:
  • 影响因子:
    8.2
  • 作者:
    El Haj M;Roche J;Jardri R;Kapogiannis D;Gallouj K;Antoine P
  • 通讯作者:
    Antoine P
Exploring brain insulin resistance in adults with bipolar depression using extracellular vesicles of neuronal origin.
使用神经元来源的细胞外囊泡探索患有双相抑郁症的成人的大脑胰岛素抵抗。
  • DOI:
    10.1016/j.jpsychires.2020.12.007
  • 发表时间:
    2021-01
  • 期刊:
  • 影响因子:
    4.8
  • 作者:
    Mansur RB;Delgado-Peraza F;Subramaniapillai M;Lee Y;Iacobucci M;Nasri F;Rodrigues N;Rosenblat JD;Brietzke E;Cosgrove VE;Kramer NE;Suppes T;Raison CL;Fagiolini A;Rasgon N;Chawla S;Nogueras-Ortiz C;Kapogiannis D;McIntyre RS
  • 通讯作者:
    McIntyre RS
The subjective experience of recollection and familiarity in Alzheimer's disease.
阿尔茨海默病的记忆和熟悉的主观体验。
  • DOI:
    10.1017/s0140525x19001766
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kapogiannis,Dimitrios;ElHaj,Mohamad
  • 通讯作者:
    ElHaj,Mohamad
Synaptic proteins in neuron-derived extracellular vesicles as biomarkers for Alzheimer's disease: novel methodology and clinical proof of concept.
神经元衍生的细胞外囊泡中的突触蛋白作为阿尔茨海默病的生物标志物:新方法和临床概念证明。
  • DOI:
    10.20517/evcna.2023.13
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Eitan,Erez;Thornton-Wells,Tricia;Elgart,Katya;Erden,Eren;Gershun,Eve;Levine,Amir;Volpert,Olga;Azadeh,Mitra;Smith,DanielG;Kapogiannis,Dimitrios
  • 通讯作者:
    Kapogiannis,Dimitrios
"My sympathetic clinician": perception of sympathy by patients with Alzheimer's disease increases when asked to provide autobiographical memories.
  • DOI:
    10.1007/s40520-021-02056-x
  • 发表时间:
    2022-06
  • 期刊:
  • 影响因子:
    4
  • 作者:
    El Haj, Mohamad;Allain, Philippe;Antoine, Pascal;Chapelet, Guillaume;Kapogiannis, Dimitrios;Boutoleau-Bretonniere, Claire;Gallouj, Karim
  • 通讯作者:
    Gallouj, Karim
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Dimitrios Kapogiannis其他文献

Dimitrios Kapogiannis的其他文献

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{{ truncateString('Dimitrios Kapogiannis', 18)}}的其他基金

Studies in Dementia and Neurodegenerative Diseases
痴呆症和神经退行性疾病研究
  • 批准号:
    8931651
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Studies in Dementia and Neurodegenerative Diseases
痴呆症和神经退行性疾病研究
  • 批准号:
    9147406
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Studies in Dementia and Neurodegenerative Diseases
痴呆症和神经退行性疾病研究
  • 批准号:
    9549402
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Brain structure, chemistry and function investigations in aging and Alzheimer's disease using MRI/MRS
使用 MRI/MRS 对衰老和阿尔茨海默病的脑结构、化学和功能进行研究
  • 批准号:
    10913182
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Studies in Dementia and Neurodegenerative Diseases
痴呆症和神经退行性疾病研究
  • 批准号:
    8736682
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Brain structure, chemistry and function investigations in aging using MRI/MRS
使用 MRI/MRS 研究衰老过程中的脑结构、化学和功能
  • 批准号:
    9549398
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Studies in Dementia and Neurodegenerative Diseases
痴呆症和神经退行性疾病研究
  • 批准号:
    8148373
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Studies in Dementia and Neurodegenerative Diseases
痴呆症和神经退行性疾病研究
  • 批准号:
    8336004
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Studies in Dementia and Neurodegenerative Diseases
痴呆症和神经退行性疾病研究
  • 批准号:
    8552544
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:
Brain structure, chemistry and function investigations in aging using MRI/MRS
使用 MRI/MRS 研究衰老过程中的脑结构、化学和功能
  • 批准号:
    8931645
  • 财政年份:
  • 资助金额:
    $ 558.77万
  • 项目类别:

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衰老与微管蛋白翻译后修饰之间的相互作用
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NSF PRFB FY 2023: Connecting physiological and cellular aging to individual quality in a long-lived free-living mammal.
NSF PRFB 2023 财年:将生理和细胞衰老与长寿自由生活哺乳动物的个体质量联系起来。
  • 批准号:
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    Fellowship Award
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McGill-MOBILHUB:脑健康和衰老认知障碍的知识、教育和人工智能/深度学习动员中心。
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