在肥胖症中,脂质储存,脂解和脂毒性
Atilla Engin1,2
1Faculty of Medicine, Department of General Surgery, Gazi University, Besevler, Ankara, Turkey. dr.aengin@gmail.com.
Advances in experimental medicine and biology
|September 17, 2024
概括
肥胖导致脂肪组织功能失调,其特点是脂肪细胞大小和数量增加,脂质处理受损,脂肪细胞死亡. 这种重塑有助于胰岛素抵抗和2型糖尿病的进展.
科学领域:
- 代谢和内分泌学
- 细胞生物学 细胞生物学
- 肥胖问题研究研究
背景情况:
- 白色脂肪组织的扩张与脂肪细胞的大小和数量的增加相关,由和脂肪酸驱动.
- 肥胖症中的功能障碍脂肪组织会损害脂质储存,导致子宫外脂肪沉积和脂毒性.
- 肥胖相关的脂肪细胞死亡,一种编程细胞死亡形式,对于从增肥转变为增塑性肥胖至关重要.
研究的目的:
- 审查肥胖症中的脂肪组织重塑,重点关注脂肪细胞死亡和脂肪生成.
- 探索脂质滴 (LDs) 与其他细胞器官的复杂相互作用.
- 讨论脂肪细胞循环在肥胖和相关代谢障碍的临床影响.
主要方法:
- 关于脂肪组织重塑,脂质代谢和脂肪细胞生物学现有文献的综述.
- 分析特定基因 (例如G0/G1开关基因2) 和分子 (例如CD44,miRNAs) 在脂肪细胞功能和功能障碍中的作用.
- 对肥胖和2型糖尿病的临床观察和潜在治疗策略的讨论.
主要成果:
- 减少自由脂肪酸 (FFA) 周转率和限制的甘油三 (三甘油:TAG) 周转率是超肥胖症的特征.
- 低氧和细胞外基质 (ECM) 沉积发生在肥胖脂肪组织中,CD44介导相互作用与胰岛素抵抗有关.
- 功能障碍,脂质过载的脂肪细胞和减少的新增脂质生成是与胰岛素抵抗相关的肥胖的标志.
- 与肥胖相关的脂肪细胞死亡先于转变为超塑性肥胖,这对长期脂肪组织质量有影响.
- 2型糖尿病的高血糖会改变内脏脂肪细胞中的微RNA (miRNA) 表达,从而导致糖尿病表型的进展.
结论:
- 脂肪组织重塑,涉及脂肪细胞死亡和脂肪生成,是一个复杂的过程,是肥胖和代谢疾病的核心.
- 了解脂质滴水相互作用和细胞机制是解决与肥胖有关的并发症的关键.
- 针对脂肪组织炎症和脂质代谢的临床策略,可能涉及甲福明和他类药物,显示出有前途.
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