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Although some studies have revealed the implication of bile acids (BAs) and neurological diseases, the levels and origin of the BAs in the brain are not fully understood. In this study, we first developed and validated a sensitive and specific method for the determination of three unconjugated BAs [cholic acid (CA), chenodeoxycholic acid (CDCA) and deoxycholic acid (DCA)] in the rat brain by liquid...
Administration of pivalate-containing antibiotics decreases serum carnitine and increases urinary pivaloylcarnitine, resulting in hypocarnitinemia. Carnitine and acylcarnitines are important biomarkers in the diagnosis of carnitine deficiency, but the relationship between acylcarnitines and drug-induced hypocarnitinemia remains unclear. Quantification of acylcarnitines enables discovery of new biomarkers...
We developed a sensitive, reliable, and accurate LC/ESI-MS/MS method for measurement of 3β-sulfooxy-7β-N-acetylglucosaminyl-5-cholen-24-oic acid and its glycine and taurine amides in urine. This atypical C 24 bile acid has been reported previously to be present in the urine of patients with Niemann–Pick Type C (NPC) disease. In the method, targeted analytes are concentrated at the front edge...
Three C 27 bile acids were found to be major biliary bile acids in the capuchinbird (Perissocephalus tricolor) and bare-throated bellbird (Procnias nudicollis), both members of the Cotingidae family of the order Passeriformes. The individual bile acids were isolated by preparative RP-HPLC, and their structures were established by RP-HPLC, LC/ESI-MS/MS and NMR as well as by a comparison of...
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