开发和临床前验证2-deoxy 2-[18F]细胞作为一种Aspergillus特异性的PET标记物
Swati Shah1, Jianhao Lai1, Falguni Basuli2
1Center for Infectious Disease Imaging (CIDI), Radiology and Imaging Sciences, Clinical Center (CC), National Institutes of Health (NIH), Bethesda, MD 20852, USA.
Science translational medicine
|August 14, 2024
概括
一种新的正电子发射断层扫描 (PET) 成像剂,2-deoxy-2-[18F]fluorocellobiose ([18F]FCB),显示出对诊断由Aspergillus fumigatus引起的侵入性真菌感染的希望.
科学领域:
- 医疗成像医学成像
- 核医学是一种核医学.
- 菌类学 菌类学是指菌类学.
背景情况:
- 侵袭性真菌感染 (IFI),特别是由Aspergillus fumigatus引起的,正在增加,并与高死亡率相关.
- 目前IFI的诊断方法缺乏速度,特异性,通常需要侵入性手术.
- 现有的成像技术与真菌感染的特异性作斗争.
研究的目的:
- 开发一种新的Aspergillus特异性的正子发射断层扫描 (PET) 成像剂.
- 针对真菌特异性的糖代谢,以提高诊断能力.
主要方法:
- 通过酶性转化[18F]FDG.合成2 - 脱氧-2-[18F]细胞酶 ([18F]FCB).
- 在Aspergillus fumigatus肺炎和肌肉炎的小鼠模型中评估[18F]FCB.
- 在体外评估[18F]FCB代谢的阿斯伯吉卢和细菌物种.
主要成果:
- [18F]FCB在短时间内以高放射性化学产量和纯度合成.
- 保留的放射性仅在活体Aspergillus fumigatus感染的焦点中观察到.
- 实验室研究证实了Aspergillus特异性的[18F]FCB由β-葡萄糖酶的水解,导致放射性标记的保留.
- 实现了低背景放射性和高目标与非目标比率.
结论:
- [18F]FCB对Aspergillus fumigatus感染具有很高的特异性.
- 标记物表现出有利的药理动力学特性,包括快速脏分泌.
- [18F]FCB是一种有前途的,临床可翻译的PET成像剂,用于Aspergillus特定的诊断.
更多相关视频
07:28Studying Metabolic Brain Connectivity Using 2-Deoxy-2-[18F]Fluoro-D-Glucose Dynamic Positron Emission Tomography at the Single-subject Level
Published on: January 24, 2025
251
08:33Radiosynthesis of 1-2-[18F]Fluoroethyl-L-Tryptophan using a One-pot, Two-step Protocol
Published on: September 21, 2021
3.1K
相关概念视频
Positron Emission Tomography
4.1K
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
4.1K
Imaging Studies II: Positron Emission Tomography and Scintigraphy
97
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET
97
