循环外体在出生和7岁之间大小减少和数量增加:与胎儿生长和肝脏脂肪的关系.
Marta Díaz1,2, Paula Casano1,2, Tania Quesada3,4
1Endocrinology Department, Institut de Recerca Sant Joan de Déu, University of Barcelona, Barcelona, Spain.
Frontiers in endocrinology
|November 29, 2023
概括
婴儿外体大小在7岁时减少,数量增加,在适合妊娠年龄的婴儿和适合妊娠年龄的婴儿之间观察到差异. 7岁时的外体大小与儿童时的肝脂肪相关.
科学领域:
- 细胞生物学 细胞生物学
- 儿科内分泌学 儿科内分泌学
- 代谢健康 代谢健康
背景情况:
- 外体对细胞间通信至关重要,转移分子载荷.
- 对儿童的外体组动态的理解是有限的.
- 胎儿生长可能会影响生命早期的外体特征.
研究的目的:
- 纵向评估婴儿和儿童的外体大小和数量.
- 为了比较适合怀孕年龄 (AGA) 和适合怀孕年龄 (SGA) 的婴儿之间的外体动态.
- 为了将外体特征与内分泌代谢健康和身体组成相关联.
主要方法:
- 从出生到7岁的75名婴儿 (40名AGA,35名SGA) 的长度研究.
- 测量了在出生时,2岁和7岁时的循环外体大小和数量.
- 评估了HOMA-IR,IGF-1,身体组成 (DXA) 和腹部脂肪 (MRI).
主要成果:
- 在7岁时,AGA婴儿表现出外体大小减少和外体数量增加.
- 与AGAs相比,SGA婴儿在出生时具有更大的外体,并在2岁和7岁时具有较低的外体数量.
- 7岁时的外体大小与整个队列中的肝脏脂肪有显著的关联.
结论:
- 生命早期的外体变化 (大小减少,数量增加) 受胎儿生长的影响.
- 外体大小可能是儿童肝脏脂肪的早期指标.
- 这些发现提供了对儿科发育中的外体生物学的见解.
相关概念视频
Overview of Exosomes
2.7K
Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
2.7K
Signs of Puberty
365
Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
365
Liver Regeneration
3.3K
The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
3.3K


