Table 2. Urine biochemistry in control and MSG-treated rats at 9 months of study.

	Control (n=10)	MSG (n=10)	P value
Urine Volume (ml/day)	26.9 ± 7.2	51.5 ± 23.6	< 0.01
Urine pH	6.6 ± 0.6	8.7 ± 0.4	< 0.001
Sodium (mEq/day)	1.0 ± 0.5	6.1 ± 2.9	< 0.001
Potassium (mEq/day)	4.1 ± 1.2	4.8 ± 1.5	NS
Chloride (mEq/day)	1.3 ± 0.6	1.8 ± 0.7	NS
Calcium (mg/day)	3.9 ± 1.2	4.1 ± 1.2	NS
Phosphate (mg/day)	36 ± 15	39 ± 5	NS
Citrate (mmol/day)	0.43 ± 13	0.77 ± 0.16	< 0.001
Ammonium (mmol/day)	1.41 ± 0.39	0.38 ± 0.19	< 0.001
Magnesium (mg/day)	4.1 ± 0.9	2.0 ± 1.1	< 0.001

Variables are expressed as mean ± standard deviation. NS, not significant.