光动力疗法
光敏剂
材料科学
生长素
胃
瘦素
聚乙二醇
生物医学工程
生物物理学
内科学
化学
医学
生物
光化学
生物化学
肥胖
激素
有机化学
作者
Ji Won Kim,Sang‐Hee Lee,Dae Sung Ryu,Jin-Hwan Park,Hyeon-Seung Lee,Hee Kyong Na,Jin Hee Noh,Do Hoon Kim,Andrew J. Park,Hwoon‐Yong Jung,Kun Na
出处
期刊:Biomaterials
[Elsevier]
日期:2023-08-01
卷期号:299: 122159-122159
被引量:3
标识
DOI:10.1016/j.biomaterials.2023.122159
摘要
An intragastric satiety-inducing device (ISD) located in the stomach induce satiety and fullness in the absence of food by continuously pressing on the distal esophagus and cardia of the stomach. To improve the therapeutic function of ISD, Chlorin e6 (Ce6) was embedded in a disk portion of ISD, generating reactive oxygen species and stimulating endocrine cells under the laser irradiation. Since Ce6 has remarkable light efficiency but poor solubility in various solvents, it is essential to use a polymeric photosensitizer and optimize a suitable coating solution composition. Methoxy polyethylene glycol-Ce6 was uniformly coated and the spontaneous release amount of the Ce6 from the device could be reduced, which induced photo-responsive cell death and reduced ghrelin levels in vitro. In mini pigs operated single therapy (PDT or ISD) or combination therapy (Photoreactive ISD), there were differences in body weight (control: 28% vs. Photoreactive ISD: 4%, P < 0.001), ghrelin (control: 4% vs. Photoreactive ISD: 35%, P < 0.001), and leptin levels (control: 8% vs. Photoreactive PDT: 35%, P < 0.001) at 4 weeks.
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