Intrinsic Molecular Proton Sensitivity Underlies GPR4 Effects on Retrotrapezoid Nucleus Neuronal Activation and CO2-Stimulated Breathing

Table 2.

Arterial blood gas analysis of GPR4(HF) mutant mouse lines

Genotype WT (12) H81F (13) Jx99 (13) H81F-Jx (13) WT (15) H167F (14)
pH 7.40 ± 0.01 7.44 ± 0.02* 7.44 ± 0.01 7.44 ± 0.02 7.42 ± 0.01 7.42 ± 0.02
PCO2 (mmHg) 30.4 ± 1.2 34.3 ± 1.5 30.8 ± 0.9 29.9 ± 2.2 33.5 ± 1.0 31.2 ± 1.0
<mml:math display="inline"><mml:mrow><mml:mi mathvariant="normal">HC</mml:mi></mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mn>3</mml:mn><mml:mo>−</mml:mo></mml:msubsup></mml:math>HCO3− (mM) 19.8 ± 0.9 24.3 ± 0.9** 21.2 ± 0.9 20.3 ± 1.5 21.7 ± 0.8 20.2 ± 0.9
PO2 (mmHg) 84.3 ± 3.3 89.9 ± 2.3 87.0 ± 2.5 89.9 ± 4.1 85.8 ± 2.2 91.2 ± 2.3
lactate (mM) 3.7 ± 0.7 3.4 ± 0.3 2.7 ± 0.4 3.7 ± 0.4 4.0 ± 0.5 4.0 ± 0.5
  • Statistical analysis by unpaired t test between WT and HF mutant littermates (N) for each line.

  • ↵* p = 0.0275.

  • ↵** p = 0.0023.

  1. The Journal of Neuroscience vol. 44 no. 36
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