Clinical Prevention Research, Steno Diabetes Center Copenhagen, 2820 Gentofte, Denmark.
Department of Clinical Medicine, Aalborg University, 9000 Aalborg, Denmark.
Nutrients. 2021 Sep 14;13(9):3197. doi: 10.3390/nu13093197.
Gut-derived hormones have been suggested to play a role in bone homeostasis following food intake, although the associations are highly complex and not fully understood. In a randomized, two-day cross-over study on 14 healthy individuals, we performed postprandial time-course studies to examine the associations of the bone remodeling markers carboxyl-terminal collagen type I crosslinks (CTX) and procollagen type 1 N-terminal propeptide (P1NP) with the gut hormones glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide 1 (GLP-1), and peptide YY (PYY) using two different meal types-a standardized mixed meal (498 kcal) or a granola bar (260 kcal). Plasma concentrations of total GIP, total GLP-1, total PYY, CTX, and P1NP were measured up to 240 min after meal intake, and the incremental area under the curve (iAUC) for each marker was calculated. The iAUC of CTX and P1NP were used to assess associations with the iAUC of GIP, GLP-1, and PYY in linear mixed effect models adjusted for meal type. CTX was positively associated with GIP and GLP-1, and it was inversely associated with PYY (all < 0.001). No associations of P1NP with GIP or GLP-1 and PYY were found. In conclusion, the postprandial responses of the gut hormones GIP, GLP-1, and PYY are associated with the bone resorption marker CTX, supporting a link between gut hormones and bone homeostasis following food intake.
肠源激素被认为在进食后参与骨稳态的维持,尽管其相关性非常复杂且尚未完全阐明。在一项针对 14 名健康个体的随机、为期两天的交叉研究中,我们进行了餐后时间进程研究,以检查骨重塑标志物羧基末端 I 型胶原交联(CTX)和前胶原 I 型 N 端前肽(P1NP)与肠激素葡萄糖依赖性胰岛素释放肽(GIP)、胰高血糖素样肽 1(GLP-1)和肽 YY(PYY)之间的相关性,使用两种不同的餐型——标准化混合餐(498 千卡)或格兰诺拉麦片棒(260 千卡)。在进食后 240 分钟内测量了总 GIP、总 GLP-1、总 PYY、CTX 和 P1NP 的血浆浓度,并计算了每个标志物的增量曲线下面积(iAUC)。使用线性混合效应模型,根据餐型调整,将 CTX 和 P1NP 的 iAUC 与 GIP、GLP-1 和 PYY 的 iAUC 进行关联分析。CTX 与 GIP 和 GLP-1 呈正相关,与 PYY 呈负相关(均<0.001)。未发现 P1NP 与 GIP 或 GLP-1 和 PYY 之间存在相关性。总之,肠激素 GIP、GLP-1 和 PYY 的餐后反应与骨吸收标志物 CTX 相关,这支持了进食后肠激素与骨稳态之间的联系。
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