Results 171 to 180 of about 21,093 (230)
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Quantification of human diamine oxidase
Clinical Biochemistry, 2017Diamine oxidase (DAO) is essential for extracellular degradation of histamine. For decades activity assays with inherent limitations were used to quantify the relative amounts of DAO. No reference DAO standard is available. Absolute DAO amounts cannot be determined. Controversy exists, whether DAO is circulating or not in non-pregnant individuals.
Thomas Boehm +9 more
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Subcellular distribution of diamine oxidase
Comparative and General Pharmacology, 19701. 1. Subcellular distribution of diamine oxidase (DAO) was studied in various mammalian tissues using differential centrifugation. 2. 2. Highest DAO activity was found in the 600 g pellets (nuclear fraction) of the following tissues: kidney cortex (cat and dog), cat intestine, rabbit placenta, and rat uterus with deciduomata. 3. 3.
B, Backus, K S, Kim
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Agents and Actions, 1983
In adult hens diamine oxidase (histaminase) activity was found in gastrointestinal tract (with the highest value in ileum), liver and spleen. Intestinal diamine oxidase is predominantly a particle-bound enzyme. In the intestine oxidation of putrescine leads to delta 1-pyrroline formation, in liver both delta 1-pyrroline and gamma-aminobutyric acid are ...
T, Biegański, M A, Ulatowska
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In adult hens diamine oxidase (histaminase) activity was found in gastrointestinal tract (with the highest value in ileum), liver and spleen. Intestinal diamine oxidase is predominantly a particle-bound enzyme. In the intestine oxidation of putrescine leads to delta 1-pyrroline formation, in liver both delta 1-pyrroline and gamma-aminobutyric acid are ...
T, Biegański, M A, Ulatowska
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Differentiation of monoamine oxidase and diamine oxidase
Biochemical Pharmacology, 1962Abstract In kidney of cats pretreated with inhibitors of monoamine oxidase and diamine oxidase the activity of these enzymes was measured simultaneously, using typical cell fractions and substrates. After iproniazid pretreatment inhibition of diamine oxidase occurred somewhat earlier and was of shorter duration than inhibition of monoamine oxidase ...
W P, BURKARD, K F, GEY, A, PLETSCHER
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Serum Diamine Oxidase in the Neonate
Neonatology, 1986Serum diamine oxidase (DAO) activities were measured in 9 pregnant women and in 33 neonates during the 1st week of life. The radiometric method was used. Very high values were found in the mothers (mean ± SE: 720 ± 143 pmol ml<sup>-1</sup> h<sup>-1</sup>) Neonates showed significantly elevated values (mean ± SE: 178 ± 54 pmol ml&
FORGET P, DE CURTIS, MARIO, SENTERRE J.
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Diamine oxidase in relation to diamine and polyamine metabolism
Agents and Actions, 1994Diamine oxidase catalyzes the oxidative deamination of short chain aliphatic diamines, like putrescine, and histamine. The enzyme is rate-limiting in the terminal catabolism of polyamines, which are endogenous polycations important for cell growth and differentiation. This review examines the behavior of diamine oxidase in mammalian tissues in relation
A, Sessa, A, Perin
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Human kidney diamine oxidase: inhibition studies
Biochemical Pharmacology, 1976Abstract The oxidation of p -dimethylaminomethylbenzylamine by purified human kidney diamine oxidase was studied in the presence of substrate analogues such as dimethylsulphonium, trimethylammonium, isothiouronium and guaniclinium compounds of various chain lengths. The inhibition by mono- and bis-onium compounds is described.
J S, Shindler, W G, Bardsley
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Purification of human placenta diamine oxidase
Biochemical and Biophysical Research Communications, 1992Diamine oxidase (histaminase) is produced at very high levels by the decidual cells of the placenta. The presence of diamine oxidase has been demonstrated in human neutrophils. Purification of human placenta diamine oxidase was performed by four subfractionation steps and led to the isolation of one polypeptide whose molecular weight was 84,000, as ...
F, Morel, A, Surla, P V, Vignais
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1981
The classic bioassays for progesterone and biologically active progestins are tedious and semiquantitative. These assays and their limitations were described recently (Glasser, 1975). The synthesis of RNA was suggested by Glasser (1975) to be a reasonably specific and reproducible quantitative biochemical endpoint for the action of progestins on the ...
C. H. Spilman +2 more
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The classic bioassays for progesterone and biologically active progestins are tedious and semiquantitative. These assays and their limitations were described recently (Glasser, 1975). The synthesis of RNA was suggested by Glasser (1975) to be a reasonably specific and reproducible quantitative biochemical endpoint for the action of progestins on the ...
C. H. Spilman +2 more
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Purification of human intestinal diamine oxidase
Inflammation Research, 1996Diamine oxidase (DAO; EC 1.4.3.6) catalyzes the oxidative deamination of histamine and other biogenie amines [1]. In mammals, degradation by DAO is the major pathway ofhistamine inactivation in many organs, especially in the intestine where the highest activities of DAO have been reported [2].
H G, Schwelberger, J, Sattler, E, Bodner
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