多元性对妊娠诱导的岛屿适应和细胞转差的影响
Vaibhav Dubey1, Neil Tanday1, Asif Ali1
1Centre for Diabetes, Schools of Biomedical Sciences and Pharmacy & Pharmaceutical Sciences, Ulster University, Coleraine, UK.
Clinical medicine insights. Endocrinology and diabetes
|October 22, 2025
概括
多重怀孕通过增加可塑性扩大胰腺小岛和β细胞质量,尽管减少了β细胞的增殖. 阿尔法细胞有助于多胞胎小鼠的β细胞扩张,确保持续的小岛适应.
科学领域:
- 内分泌学 在内分泌学.
- 细胞生物学 细胞生物学
- 生殖生物学 生殖生物学
背景情况:
- 怀孕可逆地增加胰腺小岛和β细胞质量.
- 多胎妊娠对这些适应性的影响尚不清楚.
研究的目的:
- 在多胎妊娠 (primi,bi,和tri-parity) 期间调查小岛和β细胞适应.
- 探索细胞可塑性和转基因差异化在维持跨妊娠期β细胞质量的作用.
主要方法:
- 使用转基因小鼠 (Ins1Cre/+;Rosa26-eYFP和GluCreERT2;Rosa26-eYFP) 来追踪β和α细胞血统.
- 评估了小岛形态,细胞增殖,细胞亡和转基因差异化,以应对不同的平价.
主要成果:
- 所有怀孕的小鼠都显示出小岛和β细胞区域的增加,随之减少了细胞灭绝和增加了增殖.
- 贝塔细胞的增殖率随着更高的平价而下降,但与对照组相比仍然很高.
- 阿尔法细胞的尺寸和存活率也增加了;阿尔法-β细胞转基因差异化在多重性中得到了增强,这表明在β细胞扩张中发挥了关键作用.
结论:
- 减少β细胞在多重性中的增殖,通过增加小岛细胞可塑性来补偿.
- 增强的α-β细胞转分和新生代有助于在多胎妊娠中持续的β细胞质量扩张.
相关概念视频
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
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
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion
2.2K
The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...
Insulin and C-peptide are...
2.2K


