Diabetologia:成人囊性纤维化患者口服葡萄糖对低血糖的反应

2020-07-20 MedSci原创 MedSci原创

本研究的目的是确定囊性纤维化(CF)患者口服葡萄糖负荷后发生低血糖的机制。

本研究的目的是确定囊性纤维化(CF)患者口服葡萄糖负荷后发生低血糖的机制。

在27位非糖尿病成人CF中进行了3小时75 g OGTT,根据该测试,将其分为发生低血糖(葡萄糖<3.3 mmol / l有症状或无症状或葡萄糖<3.9 mmol / l有症状,n = 14) )或无低血糖(n = 13)。进一步评估了β细胞功能,肠降血糖素(胰高血糖素样肽1 [GLP-1]和葡萄糖依赖性促胰岛素肽[GIP])和反调节激素反应(胰高血糖素,儿茶酚胺,生长激素和皮质醇)。

研究结果显示,两组在年龄、体重和BMI方面没有差异。在低血糖组中男性参与者较多,胰外分泌功能不全的个体也较多。两组空腹血糖无差异(5.3±0.16 vs 5.3±0.10 mmol/l)。在低血糖者中,空腹胰岛素(20.7±2.9 vs 36.5±4.8 pmol/l;p = 0.009)和c -肽(0.38±0.03 vs 0.56±0.05 nmol / l;p = 0.002)较低。低血糖组在摄入葡萄糖后,从135分钟开始血糖浓度明显降低,180分钟时血糖浓度为3.2±0.2 vs 4.8±0.3 mmol/l (p < 0.001)。在三个参与者中,由于葡萄糖水平<2.5 mmol/l,试验提前终止。低血糖组胰岛素和c肽浓度也较低,而促胰岛素激素反应无差异。建模表明,低血糖患者胰岛素敏感性更高(439±17.3 vs 398±13.1 ml min - 1 m - 2, p = 0.074,基于120 min的值[n = 14];512±18.9 vs 438±15.5 ml min - 1 m - 2, p = 0.006根据值直到180分钟[n = 11])。低血糖患者胰岛素分泌率较低(isr空腹:50.8±3.2 vs 74.0±5.9 pmol min−1 m−2,p = 0.002;ISROGTT: 44.9±5.0 vs 63.4±5.2 nmol/m2, p = 0.018)和细胞葡萄糖敏感性(47.4±4.5 vs 79.2±7.5 pmol min−1 m−2 [mmol/l], p = 0.001)。尽管葡萄糖浓度存在差异,但胰高血糖素、去甲肾上腺素、皮质醇或生长激素水平没有显著升高。葡萄糖浓度分别为3.8±0.2 mmol/l和3.2±0.2 mmol/l时,肾上腺素在165 min和180 min时仅比基线升高66%和61%。

研究结果表明,CF患者在OGTT晚期发生的低血糖与预期的抗调节激素反应无关,这可能是更严重的胰腺功能障碍或破坏的结果。

原始出处:

Moira L. Aitken, Magdalena A. Szkudlinska,Impaired counterregulatory responses to hypoglycaemia following oral glucose in adults with cystic fibrosis

 

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    2020-09-27 wolongzxh
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    2020-07-21 ms5000000617797190

    学习了

    0