Serum ionized calcium, nephrogenous and total urinary cyclic AMP and urinary phosphate in normal subjects
1984
Total urinary cyclic AMP (UcAMP) and nephrogenous cyclic AMP (NcAMP) were measured in 4, 20 and 24 h urine in forty-eight healthy volunteers. There were no significant differences between 4, 20 and 24 h excretion rate of UcAMP and NcAMP whether it was corrected for the glomerular filtration rate ([UcAMP]GF, [NcAMP]GF), creatinine corrected (UcAMP/Crea)U, or expressed as actual excretion rate (NcAMP, n), nor any sex differences. Mean values ± one standard deviation (SD) for these parameters:[UcAMP]GF: 30.4 ± 9.4 nmol/1; 27.7 ± 7.0 nmol/min; 28.1 ± 6.9 nmol/1 in 4, 20 and 24 h urine, respectively.[NcAMP]GF: 13.4 ± 8.5 nmol/1; 10.6 ± 7.7 nmol/1; and 11.1 ± 7.2 nmol/1 in 4, 20 and 24 h urine, respectively.(NcAMP, n): 1.45 ± 0.90 nmol/min; 1.14 ± 0.80 nmol/min; 1.17 ± 0.73 nmol/min in 4, 20 and 24 h urine, respectively, NcAMP accounts for about 40% of UcAMP.A positive correlation was found between plasma cyclic AMP and [UcAMP]GF (r = 0.41, P<0.001), whereas this relationship could not be demonstrated between p...
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