The importance of renal net acid excretion as a determinant of fasting urinary calcium excretion.
The importance of renal net acid excretion as a determinant of fasting urinary calcium excretion.
复制标题
肾净酸排泄作为空腹尿钙排泄的决定因素的重要性。
DOI:
10.1038/ki.1986.60
复制
发表时间:
1986
影响因子:
19.6
通讯作者:
Cheung,HS
中科院分区:
文献类型:
--
作者:
LemannJr,J;Gray,RW;Maierhofer,WJ;Cheung,HS
The importance of renal net acid excretion as a determinant of fasting urinary calcium excretion. To evaluate the effects of changing rates of fixed acid production on fasting urine Ca/creatinine, we studied five healthy men fed constant diets during control conditions (serum HC0327.3 ± 2.6 SD mEq/liter and blood H+ 40.4 ± 1.5 µEq/liter) and then during the administration of NH4C1 3.0 mEq/kg/day (serum HC0322.5 ± 4.9 mEq/liter; P < 0.025, and H+ 46.8 ± 2.3 mEq/liter; P < 0.005). In addition to the expected increase in daily urinary Ca excretion from 5.2 ± 2.0 to 12.5 ± 3.0 mmole/day; P < 0.001 as daily urinary net acid excretion was increased from 48 ± 32 to 257 ± 33 mEq/day; P < 0.001 we observed that fasting urinary net acid/creatinine excretion also increased from 2.9 ± 1.2 to 11.1 ± 1.2 mEq/mmole creatinine; P < 0.001 and fasting urine Ca/creatinine increased from 0.158 ± 0.111 to 0.456 ± 0.109 mmole/mmole creatinine; P < 0.005. The additional Ca appearing in the urine during acidosis ultimately reflected augmented net bone resorption since daily urinary hydroxyproline excretion was increased from 0.232 ± 0.062 to 0.377 ± 0.108 mmole/day; P < 0.01. Since variations in diet composition can cause fixed acid production and thus renal net acid excretion to vary from about zero to 200 mEq/day, such a range could cause fasting Ca/creatinine to vary from 0.09 to 0.37 mmole/mmole (0.03 to 0.13 mg/mg) and should be taken into account in the evaluation of fasting Ca/creatinine.
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DOI:
--
发表时间:
1980
期刊:
Journal of NutriLife
影响因子:
--
作者:
Sally A. Schuette;MichaelB Zemel;H. Linkswiler
通讯作者:
H. Linkswiler
DOI:
10.1136/bmj.1.6060.585
发表时间:
1977
期刊:
影响因子:
--
作者:
R. Watts
通讯作者:
R. Watts
DOI:
--
发表时间:
1974
期刊:
Journal of NutriLife
影响因子:
--
作者:
C. R. Anand;H. Linkswiler
通讯作者:
H. Linkswiler
影响因子:
19.6
作者:
Maierhofer,WJ;LemannJr,J;Gray,RW;Cheung,HS
通讯作者:
Cheung,HS
影响因子:
5.8
作者:
Hugo P. Weber;Richard W. Gray;Jesus H. Dominguez;Jacob Lemann
通讯作者:
Jacob Lemann