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  • Title: Plasma levels of adrenomedullin and atrial natriuretic peptide in patients with congestive heart failure of various etiologies.
    Author: Randa Abdel Kader M, Grace BD, Badawi NE.
    Journal: Ital J Biochem; 2007 Mar; 56(1):18-27. PubMed ID: 17511350.
    Abstract:
    OBJECTIVE: The aim of this study was to evaluate the plasma levels of the adrenomedullin (ADM) and atrial natriuretic peptide (ANP) in adult and pediatric patients with congestive heart failure (CHF) of various etiologies and to investigate their relations with haemodynamic variables e.g. echocardiographic left ventricular ejection fraction (LVEF) and fractional shortening (FS). SUBJECTS AND METHODS: The study was made in 38 adult and 21 pediatric patients with CHF of various etiologies and compared with 15 adult and 10 pediatric normal healthy controls. Patients with CHF were classified according to the New York Heart Association (NYHA) functional classification into grades II to IV in adult patients and into grade IV in all pediatric patients. ADM and ANP plasma levels were determined prior to the treatment with enzyme immunoassay. RESULTS: A statistically significant difference in the plasma levels of ADM and ANP were found between pediatrics and adult patients and corresponding healthy controls. Their levels were progressively increased with severity of NYHA class in adult patients. We found a significant positive correlation between plasma levels of each of ADM and ANP and pulse rate, systolic and diastolic blood pressure; and a significant negative correlation between their plasma levels and echocardiographic LVEF and FS. A significant positive correlation between plasma levels of ADM and ANP in both pediatrics and adult patients were also found. CONCLUSION: Plasma levels of ADM and ANP increased in adult and pediatric patients with CHF irrespective of the cause. They were positively correlated with each other and negatively correlated with LVEF and FS. These findings might have important clinical implications in that a noninvasive blood test may be used to identify high-risk subjects for HF for more invasive procedures.
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