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Excitation—Contraction coupling in frog heart

✍ Scribed by Magda Horackova; Guy Vassort


Publisher
Springer
Year
1974
Tongue
English
Weight
656 KB
Volume
352
Category
Article
ISSN
0031-6768

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We have investigated the links between electrical excitation and contraction in mammalian heart muscle. Using isolated single cells from adult rat ventricle, a whole-cell voltage-clamp technique and quantitative fluorescence microscopy, we have measured simultaneously calcium current (ICa) and [Ca2+

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✍ Sylvie Blaineau; Vincent Jacquemond; Bruno Allard; Jacqueline Amsellem; Marie Jo 📂 Article 📅 1993 🏛 Springer Netherlands 🌐 English ⚖ 919 KB

The role of barium ions in excitation-contraction coupling was studied in single isolated frog semitendinosus fibres. Simultaneous recordings of membrane currents and contraction under voltage-clamp conditions in a sucrose-vaseline gap device show that barium ions have a reversible inhibiting effect