title: Quantitation of hepcidin from human and mouse serum using liquid chromatography tandem mass spectrometry.
abstract: The hepatic peptide hormone hepcidin is considered the central regulator of iron metabolism. Characterizing the circulating levels of this peptide is critical to understanding its role in the development of clinically relevant syndromes, such as anemia of inflammation/chronic disease, and may provide insight into potential clinical interventions. While quantitative methods have been published for the determination of urinary hepcidin and serum prohepcidin, no definitive methods have been published for the determination of hepcidin in serum. In this report, we describe a quantitative method for the determination of both human and mouse hepcidin in serum and plasma. The method employs protein precipitation and solid-phase extraction followed by liquid chromatographic separation and tandem mass spectrometry detection. The method has a quantitative range of 0.25 ng/mL to 500 ng/mL serum for mouse hepcidin and 1 ng/mL to 500 ng/mL serum for human hepcidin. The method uses small sample volumes (50 microL for mice and 100 microL for humans) and 96-well formats for rapid sample processing. The method was used to establish baseline serum and plasma concentrations of hepcidin in normal C57Bl/6 mice and healthy human volunteers.
authors: Department of Drug Disposition Bioproducts, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, IN 46285, USA. atm@lilly.com
authors: Anthony T
authors: AT
authors: Murphy
authors: Derrick R
authors: DR
authors: Witcher
authors: Peng
authors: P
authors: Luan
authors: Victor J
authors: VJ
authors: Wroblewski
mesh_terms: D000818:Animals; D023181:Antimicrobial Cationic Peptides / Q000097:blood* / Q000652:urine; D002853:Chromatography, Liquid; D002908:Chronic Disease; D064451:Hepcidins; D006801:Humans; D007249:Inflammation / Q000097:blood; D008099:Liver / Q000378:metabolism; D051379:Mice; D011498:Protein Precursors / Q000097:blood / Q000652:urine; D012680:Sensitivity and Specificity; D053719:Tandem Mass Spectrometry
chemical_list: D023181:Antimicrobial Cationic Peptides; C578702:HAMP protein, human; C579599:Hamp protein, mouse; D064451:Hepcidins; D011498:Protein Precursors