19-Hydroxyandrost-4-ene-3,17-dione
(Synonyms: 19-羟基雄甾-4-烯-3,17-二酮) 目录号 : GC6360319-Hydroxyandrost-4-ene-3,17-dione是促肾上腺皮质激素-促脂解素和细胞色素P450 19A1的底物。
Cas No.:510-64-5
Sample solution is provided at 25 µL, 10mM.
Quality Control & SDS
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19-Hydroxyandrost-4-ene-3,17-dione is a substrate for Corticotropin-lipotropin and Cytochrome P450 19A1.
[1]. Wilcox RB, et al. Kinetic studies on the role of 19-hydroxyandrost-4-ene-3,17-dione in estrogen biosynthesis. Steroids. 1965;58:SUPPL 1:49-57.
Cas No. | 510-64-5 | SDF | |
别名 | 19-羟基雄甾-4-烯-3,17-二酮 | ||
分子式 | C19H26O3 | 分子量 | 302.41 |
溶解度 | DMSO : 100 mg/mL (330.68 mM; Need ultrasonic) | 储存条件 | Store at -20°C |
General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 储备液的保存方式和期限:-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。 为了提高溶解度,请将管子加热至37℃,然后在超声波浴中震荡一段时间。 |
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1 mg | 5 mg | 10 mg | |
1 mM | 3.3068 mL | 16.5338 mL | 33.0677 mL |
5 mM | 0.6614 mL | 3.3068 mL | 6.6135 mL |
10 mM | 0.3307 mL | 1.6534 mL | 3.3068 mL |
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2.
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Urinary metabotypes of newborns with perinatal asphyxia undergoing therapeutic hypothermia
PLoS One 2022 Aug 16;17(8):e0273175.PMID:35972970DOI:10.1371/journal.pone.0273175.
Perinatal asphyxia (PA) still occurs in about three to five per 1,000 deliveries in developed countries; 20% of these infants show hypoxic-ischemic encephalopathy (HIE) on brain magnetic resonance imaging (MRI). The aim of our study was to apply metabolomic analysis to newborns undergoing therapeutic hypothermia (TH) after PA to identify a distinct metabotype associated with the development of HIE on brain MRI. We enrolled 53 infants born at >35 weeks of gestation with PA: 21 of them showed HIE on brain MRI (the "HIE" group), and 32 did not (the "no HIE" group). Urine samples were collected at 24, 48 and 72 hours of TH. Metabolomic data were acquired using high-resolution mass spectrometry and analyzed with univariate and multivariate methods. Considering the first urines collected during TH, untargeted analysis found 111 relevant predictors capable of discriminating between the two groups. Of 35 metabolites showing independent discriminatory power, four have been well characterized: L-alanine, Creatine, L-3-methylhistidine, and L-lysine. The first three relate to cellular energy metabolism; their involvement suggests a multimodal derangement of cellular energy metabolism during PA/HIE. In addition, seven other metabolites with a lower annotation level (proline betaine, L-prolyl-L-phenylalanine, 2-methyl-dodecanedioic acid, S-(2-methylpropionyl)-dihydrolipoamide-E, 2,6 dimethylheptanoyl carnitine, Octanoylglucuronide, 19-Hydroxyandrost-4-ene-3,17-dione) showed biological consistency with the clinical picture of PA. Moreover, 4 annotated metabolites (L-lysine, L-3-methylhistidine, 2-methyl-dodecanedioic acid, S-(2-methylpropionyl)-dihydrolipoamide-E) retained a significant difference between the "HIE" and "no HIE" groups during all the TH treatment. Our analysis identified a distinct urinary metabotype associated with pathological findings on MRI, and discovered 2 putative markers (L-lysine, L-3-methylhistidine) which may be useful for identifying neonates at risk of developing HIE after PA.
Dissociation of 19-hydroxy- 19-oxo-, and aromatizing-activities in human placental microsomes through the use of suicide substrates to aromatase
J Steroid Biochem 1989 Feb;32(2):309-16.PMID:2921872DOI:10.1016/0022-4731(89)90269-0.
Suicide substrates of aromatase were used as chemical probes to determine if free 19-Hydroxyandrost-4-ene-3,17-dione (19-OHA) and 19-oxoandrost-4-ene-3,17-dione (19-oxoA) are obligatory intermediates in the aromatization of androst-4-ene-3,17-dione (androstenedione) to oestrone by human placental aromatase. A radiometric-HPLC assay was used to monitor 19-hydroxy, 19-oxo-, and aromatized products formed in incubations of [14C]androstenedione and human placental microsomes. When microsomes were preincubated with the suicide substrates 10 beta-mercapto-estr-4-ene-3,17-dione (10 beta-SHnorA), or 17 beta-hydroxy-10 beta-mercaptoestr-4-ene-3-one (10 beta-SHnorT), it was found that 19-hydroxy-, 19-oxo- and aromatase activities were inhibited in parallel. However, when the suicide substrates 4-hydroxyandrost-4-ene-3,17-dione (4-OHA) and 19-mercaptoandrost-4-ene-3,17-dione (19-SHA) were preincubated with placental microsomes, significantly greater inhibition of formation of oestrogens was observed in comparison to the inhibition of formation of 19-hydroxy- and 19-oxo-metabolites. Furthermore, significantly more time-dependent inhibition of 19-oxoA formation was observed in comparison to inhibition of 19-OHA formation with these same inhibitors. These results suggest that 19-hydroxy- and 19-oxo-androstenediones are not free, obligatory intermediates in the aromatization of androstenedione by human placental aromatase, but rather are products of their own autonomous cytochrome P-450-dependent, microsomal enzymatic activities.
The constitutive 7-ethoxycoumarin 0-deethylase of human placental microsomes: relationship to the intermediary steps in steroid aromatization
Life Sci 1990;46(5):321-7.PMID:2304374DOI:10.1016/0024-3205(90)90010-o.
All oxidative functions of aromatase, i.e., estrogen production, 19-oxygenated androgen production and 7-ethoxycoumarin deethylation, were inhibited in parallel in placental microsomes from non-smokers by the mechanism-based, time-dependent inactivators (suicide substrates) 10 beta-(2-propynyl)estr-4-ene-3,17-dione and 4-hydroxyandrost-4-ene-3,17-dione. In contrast, the aromatase suicide substrate androst-4-ene-3,6,17-trione had little or no effect on the conversion of androst-4-ene-3,17-dione to 19-Hydroxyandrost-4-ene-3,17-dione or on the conversion of the latter to 3,17-dioxoandrost-4-en-19-al while severely limiting the capacity for estrogen production from androst-4-ene-3,17-dione and 19-Hydroxyandrost-4-ene-3,17-dione in such microsomal preparations. Androst-4-ene-3,6,17-trione, therefore, appears to uncouple the 19-hydroxylation of androgens from estrogen synthesis. This agent also produced only a minimal inhibition of 7-ethoxycoumarin deethylation, indicating that this major constitutive transformation of a xenobiotic chemical is associated with the steroid 19-hydroxylating function of the aromatase system.