Dis Mod Mech:多吃糖可以引起骨关节炎

2018-08-10 海北 MedSci原创

肥胖是膝关节骨性关节炎最重要的危险因素之一。然而,由于疾病病因的不确定性,特别是在代谢因素方面,至今为止预防或治疗肥胖相关骨关节炎的策略是有限的。

肥胖是膝关节骨性关节炎最重要的危险因素之一。然而,由于疾病病因的不确定性,特别是在代谢因素方面,至今为止预防或治疗肥胖相关骨关节炎的策略是有限的。

高脂肪饮食诱导的肥胖小鼠已成为一种广泛使用的模型,用于检测肥胖如何增加骨关节炎风险的假设,但进展受到疾病严重程度变化的限制,一些报告得出结论认为,在小鼠中,单独饮食治疗不足以诱发骨关节炎。

最近,研究人员提出假设,典型的低脂肪对照饮食中蔗糖含量的增加会导致骨关节炎病理,从而在评估高脂饮食的影响时会改变结果。在6至26周龄的雄性C57BL / 6J小鼠中,研究人员通过比较纯化饮食的效果来测试这一假设,所述纯化饮食独立地改变了蔗糖或脂肪含量。观察的结果包括骨关节炎病理学,血清代谢物,软骨基因,和与细胞代谢和应激反应途径相关的蛋白质变化。

研究人员发现,低脂肪饮食中蔗糖与玉米淀粉的相对含量导致血清代谢物,关节病理学,软骨代谢和应激反应途径的显着差异,尽管体重或体脂没有差异。研究人员还发现,较高的膳食脂肪增加了软骨中的脂肪酸代谢酶。

因此,该研究结果表明,在小鼠骨关节炎研究中应仔细考虑对照饮食的选择。该研究还表明,软骨代谢改变可能是饮食和肥胖如何增加骨关节炎风险的一个因素。


原始出处:

Elise L. Donovan et al. Independent effects of dietary fat and sucrose content on chondrocyte metabolism and osteoarthritis pathology in miceDisease Models & Mechanisms, 2018; dmm.034827 DOI: 10.1242/dmm.034827


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    2019-05-26 lisa438
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    2018-08-12 lmm397
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    2018-08-11 明月清辉

    谢谢分享,学习了

    0

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