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Jean-Charles Schwartz
Jean Charles Schwartz is a French scientist who discovered H3 receptors (located in the nervous system) in 1983. He later went on to develop pitolisant, the first clinically approved antagonist for H3 receptors.〔Schwartz, JC. The histamine H3 receptor: from discovery to clinical trials with pitolisan〕 〔(l'Académie des sciences CV )〕
==Discovery==
In the 1970s, the list of known neurotransmitters, formerly limited to acetylcholine and the catecholamines, began to grow rapidly. One of the newly added members, histamine, interested Schwartz.〔 He noted the many similarities between histamine and the catecholamines, and was uncomfortable with one of the differences; namely, that the catecholamines had autoreceptors while histamine had none.
Schwartz designed an experiment involving radioactive histamine located inside neurons on rat cerebral cortical tissue. When these tissues were stimulated, histamine was released. However, if nonradioactive histamine was added to the tissue, less radioactive histamine was released. This pointed towards the possibility of the presence of histamine autoreceptors.
Schwartz performed additional tests, and then compared his results to the previously known H1 and H2 receptors. He found that neither of the known dose-response curves for these two receptors matched the ones he had found. Schwartz concluded he must have discovered a new histamine receptor, the H3 receptor.〔()〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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