The relaxin-like factor is a hormone

被引:55
作者
Büllesbach, EE [1 ]
Rhodes, R [1 ]
Rembiesa, B [1 ]
Schwabe, C [1 ]
机构
[1] Med Univ S Carolina, Dept Biochem & Mol Biol, Charleston, SC 29425 USA
关键词
relaxin-like factor; RLF; Leydig insulin-like peptide; radioimmunoassay; puberty;
D O I
10.1385/ENDO:10:2:167
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
The relaxin-like factor (RLF) circulates in the bloodstream of humans, interacts with a membrane protein with all the characteristics of ligand-receptor binding, and must therefore be considered a hormone by definition. The polyclonal antibody raised against synthetic human RLF showed no crossreactivity to other structurally related hormones, like insulin and relaxin. The sensitivity of this assay (ED50 at 100 pM) allowed the direct measurement of RLF concentrations in serum. The highest levels were detected in the serum of postpuberty males (190 pM), whereas in females and children, the RLF concentration was one order of magnitude lower.
引用
收藏
页码:167 / 169
页数:3
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