相关实验视频

Updated: Jul 12, 2025

Modeling and Evaluation of Murine Diabetic Cardiomyopathy Model

Modeling and Evaluation of Murine Diabetic Cardiomyopathy Model

Published on: November 29, 2024

血糖控制对左心室功能在临床和实验糖尿病中的影响

Steven J Lavine^1,2, Petar Prcevski³

¹Wayne State University, St. Louis, Missouri, USA.

|October 25, 2023

概括

较差的血糖控制会使糖尿病中左心室 (LV) 功能障碍恶化. 这项对狗和患者的研究表明,不受控制的血糖会对心脏功能产生负面影响,增加心力衰竭的风险.

科学领域:

心脏病学心脏病学
内分泌学在内分泌学.
糖尿病学糖尿病学

背景情况:

尽管努力改善血糖控制,尤其是正常的左心室 (LV) 功能,糖尿病 (DM) 的心血管结果仍然不理想.
血糖控制对DM中先前存在的LV功能障碍的影响需要进一步调查.

研究的目的:

在DM和LV功能障碍的狗模型中评估血糖控制对LV功能障碍的影响.
评估血糖控制对患有DM和先前存在的LV功能障碍的患者的LV功能的影响.

主要方法:

建立了一种由冠状动脉微球栓塞诱导的慢性LV功能障碍的狗模型,随后诱导DM并将其分配给良好的或差的血糖控制.
血液动力学和多普勒回声心脏学数据收集在狗和在一个队列的患者与DM和减少喷射率 (EF),与非DM对照相比.
患者数据包括实验室结果,药物和不良事件.

主要成果:

在犬类中,低血糖控制 (HbA1c = 8.05%) 导致LV质量减少和周围纤维缩短,而不是仅仅是LV功能障碍.
良好的血糖控制 (HbA1c = 3.88%) 保持了与对照组 (HbA1c = 2.99%) 类似的LV参数.
与非DM对照组相比,患有DM且血糖控制不佳的患者表现出降低的EF,周围纤维缩短受损 (0.93对1.11,P<0.001),心力衰竭发病率较高.

结论:

在实验模型中,低血糖控制对先前存在的左心室功能障碍产生不利影响.
这些发现转化为2型糖尿病患者,其中血糖控制不良加剧了LV功能障碍并增加了心力衰竭风险.

更多相关视频

Mouse Electroacupuncture Fixation Device Fabrication for Electroacupuncture Pretreatment in Diabetic Cardiomyopathy Mouse Model

Mouse Electroacupuncture Fixation Device Fabrication for Electroacupuncture Pretreatment in Diabetic Cardiomyopathy Mouse Model

Published on: April 18, 2025

Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes

Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes

Published on: September 18, 2017

相关概念视频

Pathophysiology of Diabetes

Pathophysiology of Diabetes

Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...

Diabetes Mellitus: Type 2 and Gestational

Diabetes Mellitus: Type 2 and Gestational

Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...

Heart Failure II: Pathophysiology

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...