Oral delivery of carrier-free dual-drug nanocrystal self-assembled microspheres improved NAD(+) bioavailability and attenuated cardiac ischemia/reperfusion injury in mice.

Oral delivery of carrier-free dual-drug nanocrystal self-assembled microspheres improved NAD(+) bioavailability and attenuated cardiac ischemia/reperfusion injury in mice.
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口服无载体双药纳米晶自组装微球可提高小鼠 NAD 生物利用度并减轻心脏缺血/再灌注损伤

DOI:
10.1080/10717544.2021.1886198
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发表时间:
2021-12
期刊:
影响因子:
6
通讯作者:
Yang Q
Yang Q
中科院分区:
医学2区
文献类型:
--
作者:
Nie H;Zhang Y;Yu H;Xiao H;Li T;Yang Q

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摘要 烟酰胺核苷(NR)作为膳食补充剂,可在细胞内转化为烟酰胺腺嘌呤二核苷酸(NAD+)以支持线粒体能量代谢。然而,口服NR的功效由于其在循环中快速降解且在靶器官中生物利用度低而受到限制。在这项研究中,我们通过纳米喷雾干燥机制备了纳米晶体自组装微球,用于口服NR。 NR和白藜芦醇(RES)纳米晶自组装微球(NR/RESms)的结构通过形貌、化学结构和结晶得到证实。 NR/RESms 在模拟胃酸条件下显示出有限的 NR 释放(前 8 小时内<15%),而在模拟肠环境中实现了加速的 NR 释放(8 小时内>46%)。口服 NR/RESms 8 小时显着升高血清中的 NAD+ 水平(NR 组为 169.88nM 对比 30.93nM,p<0.01;NR+RES 组为 66.89nM,p<0.05),并增强了多个器官中的 NAD+ 丰度。小鼠,表现出改善的口服 NAD+ 生物利用度。此外,在对主要器官没有任何严重不良影响的情况下,在心脏缺血/再灌注(I/R)损伤小鼠模型中,口服NR/RESms可减轻心肌梗死(I/R + NR组为15.82%,I/R + NR + RES组为20.76%)。因此,我们的数据支持 NR/RESms 是作为口服 NAD+ 增强剂的有前途的候选者。
Abstract Nicotinamide riboside (NR), as a dietary supplement, can be converted to nicotinamide adenine dinucleotide (NAD+) in cells to support mitochondrial energy metabolism. However, the efficacy of oral administrated NR is limited due to its quick degradation in circulation and low bioavailability in targeted organs. In this study, we fabricated nanocrystal self-assembled microspheres by Nano Spray Dryer for oral delivery of NR. The structure of NR and resveratrol (RES) nanocrystal self-assembled microspheres (NR/RESms) is confirmed by the morphology, chemical structure, and crystallization. The NR/RESms displayed restricted NR release at the gastric acid-mimic condition (<15% in the first 8 hours), while achieved accelerated NR release in an enteric-mimic environment (>46% within 8 hours). Oral administration of NR/RESms for 8 hours significantly elevated NAD+ levels in serum (169.88 nM versus 30.93 nM in the NR group, p < .01; and 66.89 nM in the NR + RES group, p < .05), and enhanced NAD+ abundance in multiple organs in mice, exhibiting an improved oral NAD+ bioavailability. In addition, without any serious adverse effects on major organs, oral delivery of NR/RESms attenuated myocardial infarction (15.82% versus 19.38% in the I/R + NR group and 20.76% in the I/R + NR + RES group) in a cardiac ischemia/reperfusion (I/R) injury mouse model. Therefore, our data supported that the NR/RESms is a promising candidate as NAD+ booster for oral administration.
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