Tissue distribution of N1-methyl-2-pyridone-5-carboxamide- and N1-methyl-4-pyridone-3-carboxamide-forming N1-methylnicotinamide oxidases in rats.
نویسندگان
چکیده
منابع مشابه
5-Methyl-2-pyridone
The crystal structure of the title compound, C(6)H(7)NO, is stabilized by inter-molecular N-H⋯O hydrogen bonds, resulting in inversion dimers. The structure is further consolidated by weak C-H⋯O hydrogen bonds.
متن کاملN-Methyl-4-pyridone-5-carboxamide as a metabolite of nicotinic acid in man and monkey.
In previous experiments reported from this laboratory (1) N-methyl-4-pyridone-5-carboxamide was isolated from rat urine and identified as the major urinary metabolite of the pyridine nucleotides. Recently Wieland et al. (2) synthesized this 4-pyridone and have found their synthetic product to be identical with the compound isolated from rat urine. Experiments have now been carried out to determ...
متن کاملPurification and properties of the aldehyde oxidases from hog and rabbit livers.
The aldehyde oxidases from rabbit and hog livers have been purified to homogeneity by modifications of and additions to previously published procedures. The final preparations were judged to be homogeneous on the basis of ultracentrifugal, electrophoretic, chromatographic, spectral, and kinetic criteria. A number of physical and kinetic properties of the homogeneous enzymes have been determined...
متن کاملEstimation of aldehyde oxidase activity in vivo from conversion ratio of N1-methylnicotinamide to pyridones, and intraspecies variation of the enzyme activity in rats.
The in vivo conversion ratio of N1-methylnicotinamide (NMN) to N1-methyl-2-pyridone-5-carboxamide (2-PY) and N1-methyl-4-pyridone-3-carboxamide (4-PY) as a parameter for the estimation of aldehyde oxidase level in rats was examined. NMN and its pyridones (2-PY and 4-PY) are usually detected in the urine of rats. When we measured the ratio of the amount of pyridones to the total amount of NMN an...
متن کاملA fluorometric method for the determination of the 6-pyridone of N1-methylnicotinamide in urine.
Since Knox and Grossman demonstrated the excretion by man of the 6-pyridone of N’-methylnicotinamide (hereafter referred to as the pyridone) in appreciable amounts after the ingestion of nicotinamide (2), it became necessary to devise a method for its quantitative estimation in urine. Knox and Grossman isolated the compound from human urine and described its properties, including its ultraviole...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1989
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.53.3355