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. Author manuscript; available in PMC: 2007 Sep 1.
Published in final edited form as: Am J Physiol Heart Circ Physiol. 2006 Apr 7;291(3):H1118–H1125. doi: 10.1152/ajpheart.01308.2005

Table 2.

Regulation of Ca2+ spark and transient KCa current properties by caffeine

  Control   Caffeine (10 μM)
Ca2+ sparks
  Amplitude: all, nM 1,915 ± 213 (33) 1,375 ± 81*(42)
  Spread, μm2  2.92 ± 0.29 (20)  3.61 ± 0.31*(20)
  Decay (t½), ms  54.5 ± 3.9 (16)  50.7 ± 5.7 (16)
  Coupling, %  75.4 ± 4.9  75.8 ± 5.1
Global Ca2+, nM    363    419 ± 9*
KCa transient activity (NPo)  15.5 ± 1.4 (25)  15.7 ± 1.0 (32) 

Values are means ± SE of number of events in parentheses.

*

P < 0.05 vs. control.