Results 141 to 150 of about 10,099,064 (215)

Inorganic pyrophosphatase in human urine

Clinica Chimica Acta, 1970
Abstract Dialyzed urine from healthy men exhibited inorganic pyrophosphatase activity with pH maxima at 3.5 and 8.3. The pyrophosphatase did not require the addition of either Mg++ or Ca++ for maximal activity and showed greater variation at pH 3.5 than at pH 8.3.
N W, Wakid, F, Kutayli, H, Buri
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Lanthionine detected in human urine

Clinica Chimica Acta, 1978
Lanthionine has been detected incidentally in the urine of a patient with an abdominal pseudo-tumor, possibly caused by a Yersinia infection. The L- and/or D-form together with the meso-form were present. The identity of the amino acid was confirmed by GC-MS of the N-trifluoroacetyl methyl ester derivative. The abnormal amino acid was thought to be not
S K, Wadman, P K, De Bree, J P, Kamerling   +2 more
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Aflatoxin M1 in Human Urine

Nature, 1970
So far, only circumstantial evidence has indicated that aflatoxin is involved in the aetiology of liver cancer1, but we have found that it is possible to investigate this relationship by measuring the urinary excretion of aflatoxin M1, which is the hydroxylated product of B1.
T C, Campbell, J P, Caedo, J, Bulatao-Jayme, L, Salamat, R W, Engel   +4 more
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Unexpectedly high concentrations of 2,4-di-tert-butylphenol in human urine.

Environmental Pollution, 2019
Synthetic phenolic antioxidants (SPAs) have received increasing attention due to the reports of toxicity and environmental contamination. Nevertheless, limited information was available on human burdens of these SPAs, with the exception of 2,6-di-tert ...
Runzeng Liu, S. Mabury
semanticscholar   +1 more source

Occurrence of p-phenylenediamine antioxidants in human urine.

Science of the Total Environment
General populations are widely exposed to various p-phenylenediamine antioxidants (PPDs). N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD), a typical p-phenylenediamine antioxidant, has been detected in human urine samples.
WeiLi Mao, Hangbiao Jin, Ruyue Guo, Ping Chen, Songyang Zhong, Xilin Wu   +5 more
semanticscholar   +1 more source

Peptides in Human Urine

1963
Publisher Summary Peptiduria is a physiological phenomenon. The total amount of peptides excreted in urine and the qualitative composition of these compounds showed variations even in normal subjects, and these marked qualitative and quantitative differences can be observed in certain pathological conditions. Quantitative determination of peptides in
B, SKARZYNSKI, M, SARNECKA-KELLER
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CONJUGATED HYDROXYSKATOLES IN HUMAN URINE

Canadian Journal of Biochemistry, 1964
A spot, occasionally observed on chromatograms of urinary indoles, described as being due to "6-sulphatoxyskatole", and implicated by some workers in certain pathological conditions, has been shown by enzymatic hydrolysis and thin layer chromatography to be probably due to a mixture of the sulphate conjugates of 5-, 6-, and 7-hydroxyskatole.
R A, HEACOCK, M E, MAHON
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Conjugated androstenedione in human urine

Journal of Steroid Biochemistry, 1979
Abstract A method for the measurement of the total amount of androstenedione in urine, both free and conjugated. has been devised. After mild acid hydrolysis and a paper Chromatographic purification stage, the amount of androstenedione has been estimated by radioimmunoassay. The mean excretion of androstenedione for 12 male subjects was 198 nmol/24 h.
A B, Goodall, V H, James
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Glycoasparaginase in human urine

Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease, 1991
Glycoasparaginase was purified 15,000-fold from human urine. The enzyme is a tetrameric protein of 86 kDa, composed of two heavy chains (25 kDa) and two light chains (18 kDa). Its structure and properties are very similar to those of human leukocyte glycoasparaginase.
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Dipeptide analysis in human urine

Journal of Chromatography B: Biomedical Sciences and Applications, 1986
Fractions of dipeptides, obtained from human urine by a combination of cation-exchange chromatography, ligand-exchange chromatography and reversed-phase chromatography, were transformed into their N-heptafluorobutyryl methyl ester derivatives and then subjected to capillary gas chromatography.
J, Jandke, G, Spiteller
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