Urinary felinine concentrations in cats with renal diseases
Felinine excretion is significantly lower in cats with renal diseases
Cats with progressive renal diseases often exhibit a weakened urinary odor, in contrast to normal cat urine which emits odorants with catty odor, such as 3-mercapto-3-methyl-1-butanol, 3-mercapto-3-methylbutyl formate, 3-methyl-3-methylthio-1-butanol, and 3-methyl-3-(2-methyldisulfanyl)-1-butanol. Felinine, an amino acid, is a precursor of these odorants and metabolized from its precursor, 3-methylbutanol glutathione (MBG), via 3-methylbutanol-cysteinylglycine (MBCG). While previous studies have reported felinine excretion in normal cats, its levels in cats with renal diseases remain unclear. This study investigates the urinary excretion of felinine and its precursors in cats with renal diseases and explores whether changes in these metabolites are linked to reduced volatile felinine ...
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