Table 1. Responses to Prolonged Baroreflex Activation during Variations in Salt Intake.
| Salt Intake | UNaV (mmol/d) | HR(bpm) | [PNE] (pg/mL) | [PCORT] (μg/dL) | HCT | [PPROT] (g/dL) |
|---|---|---|---|---|---|---|
| LS (5 mmol/d) | 4±1* | 75±4 | 85±8 | 1.2±0.1 | 0.39±0.1 | 6.4±0.1 |
| LS+BA | 6±1* | 61±4† | 52±7† | 1.2±0.1 | 0.35±0.1† | 6.2±0.2 |
| NS (45 mmol/d) | 44±2 | 73±4 | 95±7 | 1.3±0.2 | 0.40±0.1 | 6.4±0.1 |
| NS+BA | 44±3 | 55±4† | 75±7† | 1.3±0.1 | 0.35±0.2† | 6.0±0.1† |
| HS (450 mmol/d) | 429±4* | 72±5 | 93±5 | 1.1±0.1 | 0.38±0.2 | 6.2±0.2 |
| HS+BA | 437±6* | 58±4† | 58±5† | 1.3±0.1 | 0.35±0.2† | 5.8±0.2† |
Values are mean±SEM (n=6). LS indicates low salt intake; NS, normal salt intake; HS, high salt intake; BA, baroreflex activation; UNaV, urinary sodium excretion; HR, heart rate; [PNE], plasma norepinephrine concentration; PCORT, plasma cortisol concentration; HCT, hematocrit, PPROT, plasma protein concentration
*
P<0.05 vs corresponding NS;
†
P<0.05 vs before BA at each salt intake