Characterization of cardiovascular diseases (CVD) in people with long duration Type 1 diabetes
长期 1 型糖尿病患者心血管疾病 (CVD) 的特征
基本信息
- 批准号:10543994
- 负责人:
- 金额:$ 77.58万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-12-24 至 2025-11-30
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Abstract
Cardiovascular disease (CVD) is the major cause of mortality in Type 1 diabetes (T1D). Some CVD risk factors
are shared between people with T1D and Type 2 diabetes (T2D). However, differences in dyslipidemia,
severity of insulin resistance, disease onset, responses to glycemic control, and presence of autoimmunity
suggest that the pathogenesis of CVD may differ between T1D and T2D. Diabetic nephropathy (DN) is a major
risk factor for CVD in T1D; but while it occurs in 40% of those with T1D, CVD is still the major cause of
mortality in those without DN. Autoimmunity may also contribute to CVD, since the risks of atherosclerosis are
elevated in several autoimmune diseases. Understanding the pathogenesis of CVD in TID is hampered also by
the lack of comparative pathological studies of coronary vessels of aging people with T1D versus T2D and
non-diabetic subjects. Preliminary studies from the Medalist Study, a large cohort (n=1019) with >50 years of
insulin-dependent T1D, showed that while only 13% have DN, 40% exhibited significant CVD history, which
correlated with coronary artery calcium (CAC) scores by CT and myocardial dysfunction by cardiac MRI
(CMR). While >90% of Medalists possess high-risk HLA alleles for classic autoimmune T1D, 8% also have
known genes for monogenic diabetes. The Medalist biobank includes plasma/serum samples and postmortem
organ specimens (hearts with coronary vessels, aortae, kidney, pancreases and others). Pilot studies in
Medalists provide the first extensive characterizations of inflammatory and metabolomics profiles of T1D and
their associations with CAC scores and CMR parameters, which may indicate differences with published data
on T2D. Pilot morphological studies of Medalists’ coronary vessels clearly identified immune cell infiltrates,
including CD3+ T-cells. The role of autoimmunity in exacerbating atherosclerosis is clearly demonstrated by
studies using newly-created ApoE-/-/NOD mice with autoimmune diabetes closely mimicking T1D, which
exhibited significantly more atherosclerotic plaques containing elevated subsets of pro-inflammatory T-cells
and less regulatory T-cells than in non-diabetic ApoE-/-/CongNOD control mice. In this proposal, we aim to
characterize CVD in T1D by clinical, biochemical, imaging, metabolomic and pathological studies, and their
associations with autoimmunity, via comparative studies of the Medalist cohort with T2D, monogenic diabetes
and non-diabetic subjects. Our specific aims are as follows: Sp. Aim 1: To characterize atherosclerosis and
myocardial structure and function in type 1 diabetes of long duration (Joslin Medalist Study) by CVD history
and imaging, presence of autoimmunity, beta cell function, inflammatory and metabolomics markers, metabolic
control and microvascular diseases. Sp. Aim 2: To compare the plaque characteristics and composition of
immune cells, including monocytes, macrophages, B-cells and T-cells (CD3+, CD4+ and CD8+ T cells) and
subtypes of T-cells (Treg, Tfh, Th1 and Th17) in the atherosclerotic plaques of the coronary vessels and
peripheral arteries from patients with T1D, T2D, monogenic diabetes and no DM.
抽象的
心血管疾病(CVD)是1型糖尿病(T1D)死亡率的主要原因。一些CVD风险因素
在患有T1D和2型糖尿病(T2D)的人之间共享。但是,血脂异常的差异,
胰岛素抵抗的严重性,疾病发作,对血糖控制的反应以及自身免疫性的存在
表明CVD的发病机理在T1D和T2D之间可能有所不同。糖尿病性肾病(DN)是主要的
T1D中CVD的危险因素;但是,尽管它发生在40%的T1D的人中,但CVD仍然是
没有DN的人的死亡率。自身免疫力也可能导致CVD,因为动脉粥样硬化的风险是
在几种自身免疫性疾病中升高。了解TID中CVD的发病机理也受到了阻碍
缺乏对T1D与T2D和T2D和T2D衰老的冠状动脉血管的比较病理研究
非糖尿病主体。奖牌研究的初步研究,一项大型队列(n = 1019),> 50年
胰岛素依赖性T1D表明,虽然只有13%的DN,但40%暴露了重要的CVD史,这
通过CT和心肌功能障碍与心脏MRI相关,与心肌功能障碍相关
(CMR)。 > 90%的奖牌获得者拥有经典自身免疫性T1D的高风险HLA等位基因,而8%也有
已知的单基因糖尿病基因。奖章的生物库包括等离子体/血清样品和验尸
器官标本(带有冠状动脉,主动脉,肾脏,胰腺等的心脏)。试点研究
奖章者提供了T1D和
它们与CAC分数和CMR参数的关联,这可能表明与已发布数据的差异
在T2D上。奖章冠状动脉血管的试验形态学研究清楚地鉴定出免疫细胞浸润,
包括CD3+ T细胞。自身免疫在加剧动脉粥样硬化中的作用清楚地证明了
使用新创建的APOE-/ - /NOD小鼠与自身免疫性糖尿病的研究非常模仿T1D
表现出更多的动脉粥样硬化斑块,其中包含促炎性T细胞的升高
与非糖尿病的APOE - / - /Congnod Control小鼠相比,调节T细胞少。在此提案中,我们的目标是
通过临床,生化,成像,代谢组学和病理研究来表征T1D中CVD的表征
通过与T2D,单基因糖尿病的奖章同类队列的比较研究,与自身免疫性的关联
和非糖尿病学科。我们的具体目的如下:sp。目标1:表征动脉粥样硬化和
CVD历史记录的长时间1型糖尿病(乔斯林奖章研究)中的心肌结构和功能
以及成像,自身免疫性的存在,β细胞功能,炎症和代谢标记,代谢
控制和微血管疾病。 sp。目标2:比较斑块特征和组成
免疫细胞,包括单核细胞,巨噬细胞,B细胞和T细胞(CD3+,CD4+和CD8+ T细胞)和
T细胞(Treg,TFH,Th1和Th17)的亚型在冠状血管的动脉粥样硬化斑块中
T1D,T2D,单基因糖尿病和无DM的患者的外周动脉。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

暂无数据
数据更新时间:2024-06-01
GEORGE L KING的其他基金
A pilot clinical trial to assess feasibility, facilitators and barriers of continuous glucose monitoring in Asian Americans with type 2 diabetes
一项试点临床试验,旨在评估患有 2 型糖尿病的亚裔美国人进行连续血糖监测的可行性、促进因素和障碍
- 批准号:1051127610511276
- 财政年份:2022
- 资助金额:$ 77.58万$ 77.58万
- 项目类别:
A pilot clinical trial to assess feasibility, facilitators and barriers of continuous glucose monitoring in Asian Americans with type 2 diabetes
一项试点临床试验,旨在评估患有 2 型糖尿病的亚裔美国人进行连续血糖监测的可行性、促进因素和障碍
- 批准号:1070951810709518
- 财政年份:2022
- 资助金额:$ 77.58万$ 77.58万
- 项目类别:
Characterization of cardiovascular diseases (CVD) in people with long duration Type 1 diabetes
长期 1 型糖尿病患者心血管疾病 (CVD) 的特征
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- 财政年份:2016
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