Title : Ganglionic tyrosine hydroxylase and norepinephrine transporter are decreased by increased sodium chloride in vivo and in vitro.

Pub. Date : 2003 Sep 30

PMID : 12963419






5 Functional Relationships(s)
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1 Ganglionic tyrosine hydroxylase and norepinephrine transporter are decreased by increased sodium chloride in vivo and in vitro. Sodium Chloride tyrosine hydroxylase Rattus norvegicus
2 Increasing dietary salt (from 0.02% to 1%, 4% or 8% NaCl in rat chow) decreased (p<0.05) the mRNA levels of tyrosine hydroxylase and the norepinephrine transporter in the adrenal gland, superior cervical ganglia and celiac ganglia. Sodium Chloride tyrosine hydroxylase Rattus norvegicus
3 To test the hypothesis that NaCl acts directly on postganglionic neurons to suppress the expression of these proteins, it was determined if increases in NaCl concentrations, of a magnitude achieved during increases in dietary salt in vivo, suppress expression of tyrosine hydroxylase and the norepinephrine transporter in cultured sympathetic neurons in vitro. Sodium Chloride tyrosine hydroxylase Rattus norvegicus
4 To test the hypothesis that NaCl acts directly on postganglionic neurons to suppress the expression of these proteins, it was determined if increases in NaCl concentrations, of a magnitude achieved during increases in dietary salt in vivo, suppress expression of tyrosine hydroxylase and the norepinephrine transporter in cultured sympathetic neurons in vitro. Sodium Chloride tyrosine hydroxylase Rattus norvegicus
5 In addition, NaCl added to cultured neurons decreased tyrosine hydroxylase and norepinephrine transporter protein and mRNA levels, and norepinephrine uptake; however, the NaCl concentration increases required were 15-30 mEq l(-1). Sodium Chloride tyrosine hydroxylase Rattus norvegicus