Table 1.
Parameter | Sham Rats | 5/6Nx Rats | ||||
---|---|---|---|---|---|---|
Low Salt | Normal Salt | High Salt | Low Salt | Normal Salt | High Salt | |
Body wt (g) | ||||||
0 wk | 453±9 | 466±10 | 468±12 | 456±10 | 461±9 | 459±11 |
2 wk | 491±11 | 494±13 | 495±12 | 484±12 | 485±18 | 482±15 |
Kidney wt/body wt (mg/g) | 3.2±0.1 | 3.2±0.2 | 3.1±0.1 | 4.2±0.1a | 4.4±0.2a | 4.8±0.2a,b |
Serum creatinine (μmol/L) | ||||||
0 wk | 68±4 | 71±5 | 72±3 | 107±5a | 111±6a | 112±3a |
2 wk | 66±4 | 72±4 | 75±8 | 110±6a | 114±6a | 117±9a |
Serum Na+ (mmol/L) | ||||||
0 wk | 140±3 | 138±3 | 140±3 | 139±2 | 140±3 | 140±2 |
2 wk | 140±3 | 140±1 | 142±2 | 141±3 | 141±2 | 144±2a,b |
Urine volume (ml/24 h) | ||||||
0 wk | 29±2 | 30±2 | 31±3 | 29±3 | 28±3 | 27±3 |
2 wk | 25±3b | 32±4 | 40±8b | 20±4 | 26±4 | 59±9a,b |
Urine Na+ (mmol) | ||||||
0 wk | 0.83±0.16 | 0.85±0.16 | 0.83±0.19 | 0.79±0.14 | 0.78±0.19 | 0.77±0.15 |
2 wk | 0.13±0.08b | 0.87±0.79 | 15.32±0.19b | 0.10±0.07b | 0.75±0.13 | 10.94±0.14a,b |
Plasma renin activity (ng AngI/ml per h) | ||||||
0 wk | 4.9±0.7 | 5.2±0.5 | 5.0±0.4 | 2.3±0.2a | 2.5±0.2a | 2.2±0.3a |
2 wk | 8.2±0.7b | 5.1±0.4 | 3.0±0.3b | 3.2±0.3a,b | 1.4±0.2a | 0.5±0.1a,b |
Plasma AGT (ng/ml) | ||||||
0 wk | 3222±274 | 3149±332 | 3188±320 | 2932±245 | 3005±329 | 2878±277 |
2 wk | 3474±131b | 3277±154 | 3049±118b | 3256±148a,b | 2990±136a | 2712±150a,b |
Serum ACE-1 activity (nmol/ml per min) | ||||||
0 wk | 86±3 | 87±4 | 89±5 | 84±3 | 85±2 | 83±4 |
2 wk | 90±6 | 86±4 | 88±3 | 87±2 | 86±2 | 80±3a,b |
Plasma AngII (pg/ml) | ||||||
0 wk | 36±4 | 40±5 | 38±3 | 27±4a | 30±3a | 29±3a |
2 wk | 81±5b | 47±3 | 25±3b | 58±3a,b | 28±2a | 15±2a,b |
Plasma NE (pg/ml) | ||||||
0 wk | 301±20 | 312±19 | 293±16 | 647±26a | 635±42a | 651±38a |
2 wk | 442±37b | 335±18 | 253±21b | 551±22a,b | 671±38a | 822±31a,b |
Data from three independent experiments are expressed as the mean±SD (n=6 in each group).
P<0.05 versus sham group fed with the same salt diet.
P<0.05 versus rats fed with normal salt in the sham or 5/6Nx group.