首页> 外文期刊>American Journal of Physiology >Effects of streptozotocin-induced diabetes and physical training on gene expression of extracellular matrix proteins in mouse skeletal muscle.
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Effects of streptozotocin-induced diabetes and physical training on gene expression of extracellular matrix proteins in mouse skeletal muscle.

机译:链脲佐菌素诱发的糖尿病和体育锻炼对小鼠骨骼肌细胞外基质蛋白基因表达的影响。

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摘要

Diabetes induces changes in the structure and function of the extracellular matrix (ECM) in many tissues. We investigated the effects of diabetes, physical training, and their combination on the gene expression of ECM proteins in skeletal muscle. Mice were divided to control (C), training (T), streptozotocin-induced diabetic (D), and diabetic training (DT) groups. Training groups (T, DT) performed 1, 3, or 5 wk of endurance training on a treadmill. Gene expression of calf muscles was analyzed using microarray and quantitative PCR. Training group samples were collected 24 h after the last training session. Diabetes affected the gene expression of several collagens (types I, III, IV, V, VI, and XV), some noncollagenous glycoproteins, and proteoglycans (e.g., elastin, thrombospondin-1, laminin-2, decorin). Reduced gene expression of collagens in diabetic skeletal muscle was partially attenuated as a result of physical training. In diabetes, mRNA expression of the basement membrane (BM) collagens decreasedand that of noncollagenous glycoproteins increased. This may change the structure of the BM in a less collagenous direction and affect its properties.
机译:糖尿病会导致许多组织细胞外基质(ECM)的结构和功能发生变化。我们调查了糖尿病,体育锻炼及其组合对骨骼肌ECM蛋白基因表达的影响。将小鼠分为对照组(C),训练(T),链脲佐菌素诱导的糖尿病(D)和糖尿病训练(DT)组。训练组(​​T,DT)在跑步机上进行了1、3或5周的耐力训练。使用微阵列和定量PCR分析小腿肌肉的基因表达。在最后一次训练后24小时收集训练组样本。糖尿病影响了几种胶原蛋白(I,III,IV,V,VI和XV型),一些非胶原糖蛋白和蛋白聚糖(例如弹性蛋白,血小板反应蛋白1,层粘连蛋白2和得体)的基因表达。由于进行体育锻炼,糖尿病骨骼肌中胶原蛋白基因表达的降低被部分减弱。在糖尿病中,基底膜(BM)胶原的mRNA表达下降,非胶原糖蛋白的mRNA表达增加。这可能会在较少胶原蛋白的方向上改变BM的结构并影响其性能。

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