患有1型糖尿病的青少年对低血糖和高血糖的急性大脑反应
Michele A O'Connell1,2,3, Richard Beare4,5, Betty Messazos6,4
1Royal Children's Hospital Melbourne, Parkville, VIC, Australia. michele.oconnell@rch.org.au.
Diabetologia
|October 7, 2025
概括
1型糖尿病会影响青少年的大脑活动和血液流动. 低血糖 (低血糖) 和高血糖 (高血糖) 都会改变神经活动和输液,并观察到延迟恢复.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 1型糖尿病与神经认知缺陷和大脑结构变化有关,但根本的生理机制尚未完全理解.
- 大脑血流 (CBF) 和神经活动对大脑功能至关重要,并且可能会受到糖尿病的血糖波动的影响.
研究的目的:
- 研究诱导性低血糖和高血糖对1型糖尿病青少年脑血流 (CBF) 和神经活动的急性影响.
- 为了评估在血糖挑战期间和之后脑输液和神经活动的差异,与基线euglycaemia相比.
主要方法:
- 在1型糖尿病的青少年中进行了观察性高胰岛素血压和功能性MRI研究.
- 使用动脉旋转标记测量脑血流 (CBF),通过低频波动的分数振幅评估神经活动.
- 参与者经历了三个血糖阶段:基线euglycaemia,诱导的低血糖或高血糖,和euglycaemic恢复,贝叶斯的多级回归用于分析.
主要成果:
- 急性低血糖症在七个功能性大脑网络中的六个大脑网络中显著减少神经活动,CBF没有显著变化.
- 急性高血糖症在五个网络中增加了神经活动,在六个网络中减少了 perfusion.
- 低血糖和高血糖都在几个大脑网络中对神经活动产生了对称的相反影响,两种状态的恢复都显示了 perfusion 和神经活动的持续变化.
结论:
- 急性低血糖和高血糖显著改变大脑输液和神经代谢活动在1型糖尿病青少年大脑的广泛区域.
- 从极端的血糖状况中恢复是延迟的,这表明持续的大脑影响.
- 这些发现为1型糖尿病中对血糖水平异常的急性脑反应提供了关键的见解.
相关概念视频
Hypoglycemia and Glucagon
830
Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
830
Diabetes Mellitus: Overview and Type I Subtype
4.9K
Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
4.9K
Diabetes Mellitus: Type 2 and Gestational
4.3K
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...
4.3K
Diabetes: Symptoms, Diagnosis, and Complications
2.1K
For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
2.1K
Hormones Regulating Blood Glucose
6.4K
Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
In addition to accelerating glucose uptake and utilization, insulin has...
6.4K
Pathophysiology of Diabetes
3.1K
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,...
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,...
3.1K


