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. Author manuscript; available in PMC: 2015 Nov 9.
Published in final edited form as: Am J Physiol Cell Physiol. 2001 Dec;281(6):C1825–C1836. doi: 10.1152/ajpcell.2001.281.6.C1825

Table 1. Influence of SIN-1 on Na+ and Cl dependency of taurine uptake.

Uptake,
fmol·mg protein−1 ·15 min−1
Buffer −SIN-1
(control)
+SIN-1
NaCl (140 mM) 2,036.6 ± 54.9 6,898.4 ± 94.2
NaCl (140 mM) + β-alanine (2.5 mM) 94.6 ± 1.3 166.8 ± 5.9
NMDG-Cl (140 mM) 27.9 ± 1.6 23.4 ± 1.7
Sodium gluconate (140 mM) 49.3 ± 7.2 31.2 ± 3.4

Values are means ± SE. ARPE-19 cells were treated with or without 1 mM 3-morpholinosydnonimine (SIN-1) for 24 h, and uptake of [3H]taurine (80 nM) was measured. Uptake buffer consisted of 20 mM HEPES-Tris (pH 7.5) containing 140 mM NaCl, sodium gluconate, or N-methyl-d-glucamine (NMDG) chloride. Inhibition of taurine transport in the presence of β-alanine (in NaCl buffer) was also measured.