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Diabetologia:胰岛素治疗可导致T2DM患者脂肪组织发生炎性改变

2013-11-25 佚名 丁香园

2型糖尿病患者中,胰岛素治疗伴随着体重增加,以腹部脂肪含量增加为特征。脂肪组织的扩张通常与微形态和炎性变化平行。为了探讨胰岛素相关脂肪含量增加,特别是当体重过度增加时,是否也可以导致人类皮下脂肪组织形态变化和炎症反应增加,来自荷兰拉德伯德大学奈梅亨医学中心H. J. Jansen教授及其团队进行了一项研究,该研究发现胰岛素治疗可导致体重增加和巨噬细胞向皮下脂肪组织聚集。该研

2型糖尿病患者中,胰岛素治疗伴随着体重增加,以腹部脂肪含量增加为特征。脂肪组织的扩张通常与微形态和炎性变化平行。为了探讨胰岛素相关脂肪含量增加,特别是当体重过度增加时,是否也可以导致人类皮下脂肪组织形态变化和炎症反应增加,来自荷兰拉德伯德大学奈梅亨医学中心H. J. Jansen教授及其团队进行了一项研究,该研究发现胰岛素治疗可导致体重增加和巨噬细胞向皮下脂肪组织聚集。该研究结果在线发表在2013年12月的Diabetologia杂志上。【原文下载】

该研究在2型糖尿病患者胰岛素治疗前和起始胰岛素治疗后6月,调查体重增加对脂肪组织内脂肪细胞大小、巨噬细胞聚集、以及主要炎症指标mRNA表达和蛋白水平的影响。

该研究结果表明,不出所料,胰岛素治疗显著增加体重。胰岛素治疗导致在皮下脂肪组织内巨噬细胞聚集。胰岛素治疗6月后,没有体重增加或体重稍微增加患者与体重增加>4%患者相比,都表现出巨噬细胞聚集增加。然而,胰岛素治疗6月后,有体重增加的患者与没有体重增加的患者相比,有更高蛋白水平的单核细胞趋化蛋白-1、肿瘤坏死因子-α(TNF-α)和白介素-1β(IL-1β)。

该研究发现,胰岛素治疗可改善2型糖尿病患者的血糖控制,但同时可诱导体重增加和巨噬细胞向皮下脂肪组织聚集。在有明显胰岛素相关体重增加特征的患者中,巨噬细胞向脂肪组织聚集伴随更显著的炎症状态。

研究背景:2型糖尿病患者经常需要胰岛素治疗,以达到良好的血糖控制,然而,胰岛素治疗常导致额外的体重增加。虽然价值观不同,而且通常研究周期有限,胰岛素治疗第一年期间的估算体重增加范围大约2到6kg.这种体重增加与腹部脂肪含量增加平行。

当发展到肥胖时,脂肪组织经历明显的形态学改变,包括脂肪细胞增加和巨噬细胞聚集。肥胖个体的脂肪组织中,巨噬细胞可能排列成所谓的冠状结构(CLSs),围绕在功能异常或死亡脂肪细胞周围,特征是比巨噬细胞分散于脂肪组织各处的个体有更强的促炎能力。

通常情况下,这些变化可导致脂肪组织更显著的炎症状态,反映在脂肪组织促炎介质分泌增加,以及胰岛素增敏蛋白脂联素分泌减少。脂肪组织炎症状态的提高被认为可导致全身性胰岛素抵抗的发生,可能最终逐渐发展成2型糖尿病。虽然肥胖个体脂肪组织的炎性改变已被很好的描述,但起始胰岛素治疗、而且随后体重增加的2型糖尿病患者皮下脂肪组织是否也发生类似的形态学改变和炎性特征仍不清楚。

原文出处:

Jansen HJ, Stienstra R, van Diepen JA, Hijmans A, van der Laak JA, Vervoort GM, Tack CJ.Start of insulin therapy in patients with type 2 diabetes mellitus promotes the influx of macrophages into subcutaneous adipose tissue.Diabetologia. 2013 Dec;56(12):2573-81. doi: 10.1007/s00125-013-3018-6.【原文下载】

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    2014-02-05 baoya
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