Synthesis and evaluation of (S)-[(18)F]fesetron in the rat brain as a potential PET imaging agent for serotonin 5-HT3 receptors.
Synthesis and evaluation of (S)-[(18)F]fesetron in the rat brain as a potential PET imaging agent for serotonin 5-HT3 receptors.
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(S)-[(18)F]fesetron 在大鼠大脑中的合成和评估,作为血清素 5-HT3 受体的潜在 PET 成像剂。
DOI:
10.1016/j.bmcl.2016.03.018
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发表时间:
2016
影响因子:
2.7
通讯作者:
Mukherjee,Jogeshwar
中科院分区:
文献类型:
--
作者:
Pithia,NeemaK;Liang,Christopher;Pan,Xiang-Zuo;Pan,Min-Liang;Mukherjee,Jogeshwar
Serotonin 5-HT3receptors are involved in various brain functions including as an emesis target during cancer chemotherapy. We report here the development of (S)-2,3-dimethoxy-5-(3′-[18F]fluoropropyl)-N-(1-azabicyclo[2.2.2]oct-3-yl)benzamide ([18F]fesetron) as a potential PET imaging agent for serotonin 5-HT3receptors. By radiolabeling((S)-2,3-dimethoxy-5-(3′-tosyloxypropyl)-N-(1-azabicyclo[2.2.2]oct-3-yl)benzamide) with fluorine-18, (S)-[18F]fesetron was obtained in 5 to 10% decay-corrected yields and with specific activities >74 GBq/μmol at the end of radiosynthesis. PET imaging in rats showed low uptake of [18F]fesetron in the brain with retention of binding in the striatal and cerebellar regions. Using colliculi as a reference region, ratios were 3.4 for striata and 2.5 for cerebellum. Ex vivo brain PET analysis displayed binding of [18F]fesetron in the hippocampus, striatum and cerebellar regions. Cerebellar regions corresponded to area postrema and nucleus tract solitaris known to contain 5-HT3receptors. Dorsal hippocampus showed the highest uptake with ratio of >17 with respect to colliculi, while area postrema and striata had ratios of >10. Thus, [18F]fesetron exhibited a unique binding profile to rat brain regions known to contain significant amounts of serotonin 5-HT3receptors. However, the very low brain uptake limits its usefulness as a PET radiotracer in this animal model.
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DOI:
--
发表时间:
1992
期刊:
International Journal of Radiation Applications and Instrumentation. Part A: Applied Radiation and Isotopes
影响因子:
--
作者:
L. Barré;D. Debruyne;M. Lasne;F. Gourand;G. Bonvento;R. Camsonne;M. Moulin;J. Baron
通讯作者:
J. Baron
DOI:
--
发表时间:
1988
期刊:
The Journal of pharmacy and pharmacology
影响因子:
--
作者:
W. Smith;E. M. Callaham;R. S. Alphin
通讯作者:
R. S. Alphin
影响因子:
5
作者:
L. Sancilio;L. Pinkus;C. Jackson;H. Munson
通讯作者:
H. Munson
影响因子:
5
作者:
L. Pinkus;N. Sarbin;John C. Gordon;H. Munson
通讯作者:
H. Munson
影响因子:
2.7
作者:
Céline M. Bourdin;J. Lebreton;M. Mathé;S. Thany
通讯作者:
S. Thany