tokens: Urinary sodium excretion reached signficantly lower values in sgk1 (+/+) mice ( 15 +/- 5 mumol / mg crea ) than in sgk1 (-/-) mice ( 35 +/- 5 mumol / mg crea ) and was associated with a significantly higher body weight gain in sgk1 (+/+) compared with sgk1 (-/-) mice (+ 6 .