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研究发现,健康脂肪受饮食和昼夜节律的变化影响。

June 09, 2021
珍妮特·桑切斯(Jeannette Sanchez)

Photo of women looking through microscope.
随着时间的流逝,散发出昼夜节律的节奏并吃高脂饮食会耗尽健康的脂肪细胞,而克里斯汀·埃克·马汉(Kristin Eckel-Mahan)博士领导的一项研究表明,这种干扰可能很难逆转。(Rogelio Castro/Uthealth摄影)
Kristin Eckel-Mahan博士和她的研究团队的照片。beplay苹果手机能用吗
Kristin Eckel-Mahan, PhD, and her research team. From left to right: Samay Shivshankar, Baharan Fekry, PhD, Kristin Eckel-Mahan, PhD, and Rafael Bravo Santos, PhD. (Photo by Rogelio Castro/UTHealth)

根据一项临床前研究today自然由休斯beplay苹果手机能用吗敦德克萨斯大学健康科学中心的研究人员(Uthealth)。

健康的脂肪组织有助于提供能量,支持细胞生长,保护器官并保持身体温暖。研究人员发现,一种高质量的饮食和以节奏方式消费的饮食(即在我们的活跃周期中)对于维持健康的脂肪很重要。beplay苹果手机能用吗

脂肪细胞祖细胞成熟成脂肪细胞 - 构成我们脂肪组织的健康脂肪细胞,该细胞将能量存储为脂肪。beplay苹果手机能用吗研究人员发现,在正常的能量摄入模式下,脂肪细胞祖细胞在整个24小时周期中经历节奏的每日增殖。

However, when investigators introduced a high fat diet, or changed the temporal patterns of food consumption so that mice ate equal increments of food during both the sleep and the wake phase, this 24-hour pattern of pre-adipocyte proliferation was destroyed.

“We found that when we fed mice a high-fat diet, it increased the proliferation of preadipocytes and destroyed its rhythmic pattern,” saidKristin Eckel-Mahan, PhD,布朗基金会分子医学研究所预防UTHealth人类疾病的代谢和退化性疾病中心的助理教授和研究的主要作者。“我们预测的是,在我们一生中,这些细胞增殖的24小时变化对于维持健康的脂肪确实很重要。”

随着时间的流逝,散发出昼夜节律并吃高脂饮食会耗尽健康的脂肪细胞,研究表明,这种干扰可能很难逆转。脂肪细胞祖细胞的耗竭将不允许在组织内制造健康的新脂肪细胞,最终导致脂肪储存和过量脂质溢出到其他器官(例如肝脏和肌肉)中。Eckel-Mahan说,在这些区域内脂肪会导致2型糖尿病和胰岛素抵抗。

“在理想的世界中,每个人都会保持正常的睡眠效果周期,并且在一天中的错误时间内不吃东西,因此在睡觉前或清晨不晚。您还应该远离高脂饮食,我们现在已经证明,这会破坏前脂肪细胞的节奏扩散。当涉及到健康脂肪时,我们拥有的24小时时钟很重要,我们需要尽可能地保护它。”Helmholtz代谢,肥胖和血管研究(HI-MAG)的HelmholtzZentrumMünchenbeplay苹果手机能用吗the University of Leipzig and University Hospital Leipzig in Germany.

Additional UTHealth authors include Rafael Bravo Santos, PhD; Baharan Fekry, PhD; Zhanguo Gao, PhD; Mikhail Kolonin, PhD; Kai Sun, PhD; Brad Snyder, MD; Alaa M.T. Mohamed; Samay Shivshankar; and Angielyn Rivera. Also contributing to the study was John T. Heiker, PhD, ofhi-mag。

Kolonin, Sun, and Eckel-Mahan are on the faculty of The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences. Kolonin is the holder of the Harry E. Bovay, Jr. Distinguished University Chair in Metabolic Disease Research at UTHealth.

The study, titled “Cellular and Physiological Circadian Mechanisms Drive Diurnal Cell Proliferation and Expansion of White Adipose Tissue,” was supported by the National Institutes of Health (DK114037 and DK125922) and the Deutsche Forschungsgemeinschaft SFB1052/C07.

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