![Fig. 2. Changes in muscle tension and intracellular Ca2+concentration ([Ca2+]i) (indicated by R340/380) during contraction by 20 nm oxytocin. Nifedipine (1 μm) (A ) or propofol (10−4m) (B ) was introduced in the presence of oxytocin. Nifedipine completely blocked the oscillatory changes in the muscle contraction and [Ca2+]i. Propofol significantly decreased oscillatory rates and suppressed the oxytocin-induced peaks of muscle contraction and [Ca2+]i.](https://asa2.silverchair-cdn.com/asa2/content_public/journal/anesthesiology/95/5/10.1097_00000542-200111000-00032/2/32ff2.png?Expires=1716614882&Signature=z97PmZWhGWcIT1BJLx1WRqcbVNAGU73fhXXGO4khUJNjxJWVj~EGLsykholMQwOVlopHl3WvRw9C8JQtdeJlNbm2kI-Ap94gmPG9i1ZuLoBEAcLI2kF6Emy4BdCdVU1XzfsVWMkWZswof6VhWfW5Sbz5LFU3edyRMbCZHOr7BjG8PI~wmAifxHnB6ZLR8AfGecSmyOWXnVWvJ-wQXUWCsuv2T~i9VBbKMb2ISEUaTXGnvkLgzgCb2XUkGvD7Km~0~rOy5AYTnEAzM5LkR2nUfqHUV0EWO4QCfJMzeOH8wKvFmMRvpc9HxtHtyAtiP-fgTKuOAd6zmAfoybq8WAgdUA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Fig. 2. Changes in muscle tension and intracellular Ca2+concentration ([Ca2+]i) (indicated by R340/380) during contraction by 20 nm oxytocin. Nifedipine (1 μm) (A ) or propofol (10−4m) (B ) was introduced in the presence of oxytocin. Nifedipine completely blocked the oscillatory changes in the muscle contraction and [Ca2+]i. Propofol significantly decreased oscillatory rates and suppressed the oxytocin-induced peaks of muscle contraction and [Ca2+]i.
