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DOI | 10.1016/S0731-7085(02)00534-4 |
Studies on neurosteroids XV. Development of enzyme-linked immunosorbent assay for examining whether pregnenolone sulfate is a veritable neurosteroid | |
Higashi, T; Daifu, Y; Ikeshima, T; Yagi, T; Shimada, K | |
通讯作者 | Higashi, T |
来源期刊 | JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
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ISSN | 0731-7085 |
出版年 | 2003 |
卷号 | 30期号:6页码:1907-1917 |
英文摘要 | An enzyme-linked inummosorbent assay (ELISA) of pregnenolone sulfate (PREGS) has been developed for examining whether it is a veritable neurosteroid. 11alpha-Hemiglutaryloxy-PREGS was newly synthesized and conjugated with bovine serum albumin (BSA), which was injected to rabbits for the production of anti-PREGS antibodies. A bridge-heterologous ELISA system employing the sequential saturation method exhibited a high sensitivity with a midpoint of 30 pg. Although the antibody showed some cross-reactivity with PREG (4.4%), it easily discriminated other related steroids reported to exist in the mammalian brain. The rat brain homogenate was treated with hexane and subjected to an OASIS HLB cartridge, which was washed with AcOEt to remove the unconjugated steroids, and then the desired sulfate was eluted with EtOH. The recovery rate of PREGS through the pretreatment was satisfactory, but its brain levels in the preliminary experiments were much lower than those previously measured by gas chromatography (GC)-mass spectrometry (MS) after solvolysis. These results practically agreed with our previous results by liquid chromatography (LC)-electrospray ionization (ESI)-MS without deconjugation. (C) 2002 Elsevier Science B.V. All rights reserved. |
英文关键词 | pregnenolone sulfate enzyme-linked immunosorbent assay neurosteroid rat brain |
类型 | Article |
语种 | 英语 |
国家 | Japan |
收录类别 | SCI-E |
WOS记录号 | WOS:000180488600027 |
WOS关键词 | CHROMATOGRAPHY-MASS SPECTROMETRY ; STEROID SIDE-CHAIN ; DEHYDROEPIANDROSTERONE-SULFATE ; RAT-BRAIN |
WOS类目 | Chemistry, Analytical ; Pharmacology & Pharmacy |
WOS研究方向 | Chemistry ; Pharmacology & Pharmacy |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/145292 |
作者单位 | (1)Kanazawa Univ, Fac Pharmaceut Sci, Kanazawa, Ishikawa 9200934, Japan |
推荐引用方式 GB/T 7714 | Higashi, T,Daifu, Y,Ikeshima, T,et al. Studies on neurosteroids XV. Development of enzyme-linked immunosorbent assay for examining whether pregnenolone sulfate is a veritable neurosteroid[J],2003,30(6):1907-1917. |
APA | Higashi, T,Daifu, Y,Ikeshima, T,Yagi, T,&Shimada, K.(2003).Studies on neurosteroids XV. Development of enzyme-linked immunosorbent assay for examining whether pregnenolone sulfate is a veritable neurosteroid.JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS,30(6),1907-1917. |
MLA | Higashi, T,et al."Studies on neurosteroids XV. Development of enzyme-linked immunosorbent assay for examining whether pregnenolone sulfate is a veritable neurosteroid".JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS 30.6(2003):1907-1917. |
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