| Literature DB >> 1584454 |
K Yanai1, T Watanabe, H Yokoyama, K Meguro, J Hatazawa, M Itoh, R Iwata, K Ishiwata, T Takahashi, T Ido.
Abstract
Histamine H1 receptors in the living human brain were visualized by positron emission tomography (PET) using [N-11C-methyl]-(E)-doxepin ([11C]doxepin). The regional distribution of the carbon-11-labeled compound in the brain corresponded well with that of the histamine H1 receptors measured in vitro using [3H]pyrilamine. The radioactivity in the brain was significantly reduced by intravenous pretreatment with d-chlorpheniramine (5 mg), a histamine H1 antagonist. The regional distribution of [11C]doxepin in the brain 45-90 min after its injection was almost the same as that of [11C]pyrilamine in the brain. These results indicate that [11C]doxepin is useful for measuring histamine H1 receptors in human brain by PET.Entities:
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Year: 1992 PMID: 1584454 DOI: 10.1016/0304-3940(92)90390-s
Source DB: PubMed Journal: Neurosci Lett ISSN: 0304-3940 Impact factor: 3.046