MemAID: Memory advancement with intranasal insulin vs. placebo in type 2 diabetes and control participants: a randomized clinical trial.

MemAID: Memory advancement with intranasal insulin vs. placebo in type 2 diabetes and control participants: a randomized clinical trial.
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MemAID:鼻内胰岛素与安慰剂相比 2 型糖尿病和对照参与者的记忆改善:一项随机临床试验。

DOI:
10.1007/s00415-022-11119-6
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发表时间:
2022-09
影响因子:
6
通讯作者:
Ngo, Long H.
Ngo, Long H.
中科院分区:
医学2区
文献类型:
--
作者:
Novak, Vera;Mantzoros, Christos S.;Novak, Peter;McGlinchey, Regina;Dai, Weiying;Lioutas, Vasileios;Buss, Stephanie;Fortier, Catherine B.;Khan, Faizan;Becerra, Laura Aponte;Ngo, Long H.

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本研究旨在评估鼻内胰岛素 (INI) 对患有和不患有 2 型糖尿病 (T2DM) 的老年人认知和步态的长期影响。第 2 期随机双盲试验包括每天一次 40 IU INI(Novolin® R,超说明书使用)或安慰剂(无菌盐水)治疗 24 周,以及 24 周随访。主要结果是认知、正常(NW)和双任务(DTW)步行速度。在 244 名随机受试者中,223 名完成基线(51 名 DM-INI、55 名 DM-安慰剂、58 名对照-INI、59 名对照-安慰剂;109 名女性,65.8±9.1;50-85 岁); 174 例已完成治疗(84 例 DM,90 例对照); 156 人完成随访(69 DM)。 DM-INI 比 DM 安慰剂具有更快的 NW(~ 7 cm/s;p = 0.025)和 DTW 治疗(p = 0.007;p = 0.812 调整基线差异)。与对照安慰剂相比,对照-INI 在治疗中 (p = 0.008) 和治疗后 (p = 0.007) 以及治疗后语言记忆 (p = 0.004) 具有更好的执行功能。 MRI 显示 DM-INI 增加了中前额皮质的脑血流量 (p<0.001)。更好的血管反应性与更快的 DTW 相关(p<<0.008)。在 DM-INI 中,治疗后血浆胰岛素 (p = 0.006) 和 HOMA-IR (p < 0.013) 降低。总体 INI 效果显示出更快的步行 (p = 0.002)、更好的执行功能 (p = 0.002) 和言语记忆 (p = 0.02)(DM-INI 和 Control-INI 队列相结合,血红蛋白 A1c 调整)。 INI 与严重不良事件、低血糖发作或体重增加无关。有证据表明 INI 对认知和步态有积极影响。接受 INI 治疗的 T2DM 参与者行走速度更快,脑血流量增加,血浆胰岛素降低,而对照组则改善了执行功能和语言记忆。 MemAID 试验为初步安全性和有效性提供了概念验证,并支持未来评估 INI 在治疗 T2DM 和与年龄相关的功能衰退方面的作用。在线版本包含可在 10.1007/s00415-022-11119-6 获取的补充材料。
This study aimed at assessing the long-term effects of intranasal insulin (INI) on cognition and gait in older people with and without type 2 diabetes mellitus (T2DM). Phase 2 randomized, double-blinded trial consisted of 24 week treatment with 40 IU of INI (Novolin® R, off-label use) or placebo (sterile saline) once daily and 24 week follow-up. Primary outcomes were cognition, normal (NW), and dual-task (DTW) walking speeds. Of 244 randomized, 223 completed baseline (51 DM-INI, 55 DM-Placebo, 58 Control-INI, 59 Control-Placebo; 109 female, 65.8 ± 9.1; 50–85 years old); 174 completed treatment (84 DM, 90 Controls); 156 completed follow-up (69 DM). DM-INI had faster NW (~ 7 cm/s; p = 0.025) and DTW on-treatment (p = 0.007; p = 0.812 adjusted for baseline difference) than DM-Placebo. Control-INI had better executive functioning on-treatment (p = 0.008) and post-treatment (p = 0.007) and verbal memory post-treatment (p = 0.004) than Control-Placebo. DM-INI increased cerebral blood flow in medio-prefrontal cortex (p < 0.001) on MRI. Better vasoreactivity was associated with faster DTW (p < 0.008). In DM-INI, plasma insulin (p = 0.006) and HOMA-IR (p < 0.013) decreased post-treatment. Overall INI effect demonstrated faster walking (p = 0.002) and better executive function (p = 0.002) and verbal memory (p = 0.02) (combined DM-INI and Control-INI cohort, hemoglobin A1c-adjusted). INI was not associated with serious adverse events, hypoglycemic episodes, or weight gain. There is evidence for positive INI effects on cognition and gait. INI-treated T2DM participants walked faster, showed increased cerebral blood flow and decreased plasma insulin, while controls improved executive functioning and verbal memory. The MemAID trial provides proof-of-concept for preliminary safety and efficacy and supports future evaluation of INI role to treat T2DM and age-related functional decline. The online version contains supplementary material available at 10.1007/s00415-022-11119-6.
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