Table 2.
AT1, AT2 and AT1-7 Receptors Binding in the Uterus of Virgin and the Uterus and Placenta of Normal Pregnant and RUPP 19-day Sprague-Dawley Rats.
Uterus or Uteroplacental Unit | AT1R % competition with losartan | AT2R % competition with PD1233195 | Mas/AT1-7R % competition with D-Ala | |
---|---|---|---|---|
Virgin | Endometrium | 94 ± 3* | 28 ± 11# | 25 ± 7# |
Myometrium | 92 ± 4* | 20 ± 11 | 18 ± 4# | |
Pregnant | Mesometrial triangle | 90 ± 5 | 7 ± 7 | 22 ± 15 |
Labyrinth placenta | 98 ± 1 | 20 ± 11 | 14 ± 8 | |
RUPP | Mesometrial triangle | 96 ± 2 | 7 ± 4 | 13 ± 7 |
Labyrinth placenta | 99 ± 1 | 7 ± 5 | 13 ± 5# |
Values represent % of total binding. AT1, AT2 and mas/AT1-7R values represent % competition with 3 μM of losartan, PD123319 and D-Ala7-Ang-(1-7) respectively. AT1R values were compared with the constant 100% to determine whether the AT1R subtype accounted for all binding observed. Values for AT2R and mas/AT1-7R were compared with the constant 0% to determine whether there was a significant contribution of AT2R and mas/AT1-7R to the total binding.
p<0.05 vs. 100%;
p<0.05 vs. 0%; n = 9–11.