Table 3.

Effect of neutral sodium PO4 loading on serum α-Klotho levels

Study period	Serum α-Klotho Levels (pg/ml)
	Baseline	2 hr	4 hr	8 hr	12 hr	24 hr	48 hr
High-dose PO4	1392±416	1287±442	1274±416	1473±468	1498±455	1443±429	1157±377
High-dose NaCl	1651 ±533	1729±546	1547±520	1573±481	1547±507	1495±494	1573±533
Low-dose PO4	976 ±403	884 ±364	1053±416	1092±429	1014±403	1016±442	1053±416
Low-dose NaCl	1079±442	1001±418	1020±457	1105±410	1053±444	1001±398	1209±427
Duodenal PO4	962 ±442	910±455	871±481	1053±403	1048±442	962±455	1079±494

Values are means±SD. Phosphate loading occurred after baseline until 36 hours. None of the values were significant both for the inter- and intragroup comparisons.