Medical philately (Medical Theme on Stamps).
نویسندگان
چکیده
His chief work was in connection with nerve action. Since Galvani’s time, it was known that the nerve impulse was electrical in nature. Loewi, however, demonstrated that chemical phenomena were also involved. In 1921, working with nerves attached to frog’s heart, he showed that chemical substances were set free, when the nerve was stimulated. The fluid containing the substance could be used to stimulate another heart directly, without nerve activity. It is said, that the idea for the experiment occurred to him at 3 a.m. on two successive nights. The first night, he wrote it down and went back to sleep. In the morning, he could not read what he had written. The second night, he went straight to the laboratory and got to work. By 5 a.m., he had established the point. Loewi called the substance he had discovered, vagusstoff (vagus material), because he had obtained it by stimulating vagus nerve. Dale soon showed the material to be acetylcholine and as a result, the two of them shared the 1936 Nobel Prize, for Medicine and Physiology.
منابع مشابه
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ورودعنوان ژورنال:
- The Journal of the Association of Physicians of India
دوره 55 شماره
صفحات -
تاریخ انتشار 2006