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Table 1 Variation in bioelectric values of Xenopus abdominal skin and chicken CAM measured in vitro prior and at different times after the basolateral application of 10 nM of Xenopus or chicken PTH(1-34) family peptides.

From: Gene structure, transcripts and calciotropic effects of the PTH family of peptides in Xenopus and chicken

   Time after hormone application (min)
Xenopus   0 10 20 30 40 50 60
PTH (n = 11) Isc 2.49 ± 0.34 2.45 ± 0.33 2.43 ± 0.32 2.44 ± 0.30 2.48 ± 0.29 2.48 ± 0.30 2.49 ± 0.28
  Rt 1143 ± 128 1157 ± 129 1164 ± 129 1130 ± 126 1160 ± 127 1164 ± 128 1167 ± 27
PTHrP (n = 12) Isc 2.59 ± 0.31 2.63 ± 0.30 2.67 ± 0.29 2.74 ± 0.29 2.82 ± 0.28 *2.88 ± 0.27 *2.91 ± 0.25
  Rt 1329 ± 140 1320 ± 122 1328 ± 122 1276 ± 104 1273 ± 98 1263 ± 95 1264 ± 95
PTH-L (n = 12) Isc 2.36 ± 0.42 2.36 ± 0.43 2.39 ± 0.42 2.44 ± 0.42 2.51 ± 0.42 2.56 ± 0.43 *2.59 ± 0.43
  Rt 1332 ± 81 1328 ± 75 1335 ± 79 1318 ± 79 1327 ± 78 1322 ± 76 1335 ± 76
Chicken         
PTH (n = 11) Isc 7.41 ± 1.90 7.54 ± 1.84 7.39 ± 1.86 7.33 ± 1.88 7.02 ± 2.00 7.14 ± 2.06 7.03 ± 2.08
  Rt 190 ± 20 191 ± 20 194 ± 21 196 ± 21 191 ± 23 194 ± 23 196 ± 24
PTHrP (n = 9) Isc 12.53 ± 2.77 13.09 ± 2.76 13.02 ± 2.74 13.05 ± 2.73 13.03 ± 2.69 13.22 ± 2.76 13.06 ± 2.73
  Rt 181 ± 15 182 ± 15 181 ± 15 179 ± 15 174 ± 15 176 ± 15 177 ± 16
PTH-L (n = 12) Isc 7.22 ± 1.26 7.37 ± 1.18 7.15 ± 1.18 6.86 ± 1.10 6.75 ± 1.08 6.80 ± 1.09 6.66 ± 1.10
  Rt 211 ± 21 208 ± 20 211 ± 20 207 ± 21 203 ± 20 205 ± 20 207 ± 30
  1. Note: Isc (μAmp/cm2); Rt (Ω.cm2); * indicates statistically significant difference from time = 0 control (p < 0.05)