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. Author manuscript; available in PMC: 2009 Mar 10.
Published in final edited form as: Circ Res. 2008 May 1;102(11):1406–1415. doi: 10.1161/CIRCRESAHA.107.170050

Table.

Kv and Kir Currents in Sham and TAC LV, RV, EPI, and ENDO Myocytes

Cells Cm Ipeak Ito,f IK,slow Iss IK1
Sham
  LV 132±3
    τd 84±3 1281±23
    pA 6849±306 3533±219 2408±96 714±20 −1474±48
    pA/pF 52.5±2.2 27.1±1.6 18.4±0.7 5.5±0.1 −11.2±0.2
    n 73 60
  RV 130±5
    τd 74±3 1155±28
    pA 8909±607 5087±417 2702±157 690±33 −1618±75
    pA/pF 68.3±3.8 38.9±2.8 20.7±0.9 5.3±0.1 −12.6±0.5
    n 35 26
  EPI 138±7
    τd 87±5 1191±40
    pA 8393±519 4105±308 3031±193 787±49 −1427±105
    pA/pF 61.6±3.2 30.2±2.2 22.3±1.3 5.7±0.2 −10.4±0.5
    n 13 13
  ENDO 131±10
    τd 89±13 1434±51
    pA 5131±469 2335±203 2010±214 686±62 −1579±110
    pA/pF 39.8±2.3 18.3±1.3 15.3±0.9 5.3±0.3 −12.4±0.6
    n 16 16
TAC
  LV 172±5*
    τd 82±2 1553±39
    pA 5744±314§ 3149±235 1747±83* 807±26# −1459±50
    pA/pF 34.1±1.8* 18.8±1.4* 10.4±0.4* 4.7±0.1* −8.6±0.3*
    n 70 57
  RV 122±5
    τd 66.4±2 1286±39
    pA 7123±570 4406±386 1858±150 662±38 −1398±155
    pA/pF 58.4±4.1 36.1±2.7 15.2±1.1 5.4±0.2 −11.4±1
    n 21 12
  EPI 177±9#
    τd 56±2 1596±53
    pA 5754±471*b 3684±354 1167±107*a 802±57 −1310±88
    pA/pF 32.9±2.4*b 21.1±1.9# 6.7±0.6*a 4.6±0.3# −7.1±0.4*
    n 23 21
  ENDO 215±11*a
    τd 70±3 1626±74
    pA 5642±584 2719±369 1856±182 1039±73*a −1720±99
    pA/pF 26.8±2.5* 13.2±1.7§ 8.7±0.8* 4.8±0.2 −7.9±0.4*
    n 18 19

All values are means±SEM. Cm, τ decay (τd), amplitude, and density values are expressed in pF, ms, pA, and pA/pF, respectively. Kv and Kir densities were determined at +40 and −120 mV (HP=−70 mV), respectively.

Values were compared in TAC and sham LV myocytes, in TAC and sham EPI myocytes, or in TAC and sham ENDO myocytes, and *P<0.001 #P<0.01, §P<0.05 values are indicated.

Impact of LVH is significantly (aP<0.05, bP<0.01) different in EPI and ENDO myocytes.