Blood insulin resistance and diabetes marker progranulin, how analysis of progranulin phosphorus concentration of blood collection in the sample, and, the screening method of improving or substance that suppresses the improvement and diabetes insulin resistance

摘要

The present invention provides a marker capable of detecting insulin resistance and diabetes in a collected blood sample, a method for analyzing said marker, a method for screening a substance improving insulin resistance, and improving or suppressing diabetes. A blood insulin resistance marker and a blood diabetes marker, which comprises a polypeptide comprising at least 15 continuous amino acids in an amino acid sequence constituting progranulin. A method for analyzing a blood marker, which comprises the steps of: measuring a concentration of an insulin resistance marker or a diabetes marker in a collected blood sample; and comparing the measured concentration with a normal blood concentration of the marker. A method for screening a substance improving insulin resistance, and improving or suppressing diabetes, which comprises the steps of: administering a candidate substance to a living body expressing insulin resistance or suffering from diabetes; measuring a blood concentration of a marker in the living body after administration; and comparing the measured concentration of the marker with a blood concentration of the marker not administered with the candidate substance.