Development of the biomarker in urine of cardiovascular and kidney disease.

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I isolated and identified a new angiotensinogen-derived peptide from the human urine. Then, I made antiserum to use rabbits for this peptide. And I established assay system. So, I collected urine samples and measured of this peptide by radioimmunoassay. I found that urinary new peptide/creatinin ratio was significantly higher than the estimated glomerular filtration rate (eGFR) < 30 ml/min/1.73 m2 group in other two groups (eGFR >90, 90-30 ml/min/1.73 m2). And, when compared with the protein urea plas in diabetes, the urinary new peptide/creatinin ratio was significantly higher than in protein urea minus group. In addition, urinary this peptide is associated renal derangement in patients with diabetic nephropathy. In addition, this peptide is abundant in a wide range of organs and tissues including the heart and kidney of human by immunohistochemistory.