Division of Primary Care Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA.
Nutrients. 2013 Feb 7;5(2):498-508. doi: 10.3390/nu5020498.
Body fat deposition and excess free fatty acid (FFA) metabolism contribute to dyslipidemia and the adverse health consequences of obesity. Individuals with upper body obesity have impaired functioning of adipocytes, the primary fatty acid storage site. Excess visceral fat is strongly associated with impaired suppression of FFA release in response to insulin, as well as with hypertriglyceridemia and low concentrations of high density lipoprotein (HDL) cholesterol. High FFA concentrations can induce insulin resistance in muscle and liver. Furthermore, failure of hyperinsulinemia to normally suppress FFA is associated with impaired carbohydrate oxidation and muscle glucose storage, reduced hepatic insulin clearance and elevated triglycerides. Understanding the impact of body fat distribution on FFA metabolism and dyslipidemia is critical for determining the link between overweight and obesity and cardiovascular disease risk. In the current review, we will explore the relationship between adipose tissue, body fat depots, and FFA metabolism.
体脂肪沉积和游离脂肪酸(FFA)代谢异常会导致血脂异常和肥胖的不良健康后果。上半身肥胖的个体脂肪细胞功能受损,脂肪细胞是主要的脂肪酸储存部位。过多的内脏脂肪与胰岛素反应时 FFA 释放抑制受损以及高甘油三酯血症和高密度脂蛋白(HDL)胆固醇浓度降低密切相关。高 FFA 浓度可导致肌肉和肝脏胰岛素抵抗。此外,高胰岛素血症不能正常抑制 FFA 与碳水化合物氧化和肌肉葡萄糖储存受损、肝胰岛素清除率降低以及甘油三酯升高有关。了解体脂肪分布对 FFA 代谢和血脂异常的影响对于确定超重和肥胖与心血管疾病风险之间的联系至关重要。在本综述中,我们将探讨脂肪组织、体脂肪蓄积与 FFA 代谢之间的关系。
Nutrients. 2013-2-7
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