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Plasma Prolylcarboxypeptidase (Angiotensinase C) Is Increased in Obesity and Diabetes Mellitus and Related to Cardiovascular Dysfunction
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Biochemial structure and function.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Internal Medicine.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Medical Genetics.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology.
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2012 (English)In: Clinical Chemistry, ISSN 0009-9147, E-ISSN 1530-8561, Vol. 58, no 7, 1110-1115 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Prolylcarboxypeptidase (PRCP) (angiotensinase C) has 3 major targets, angiotensin II, prekallikrein, and alpha-melanocyte stimulating hormone(1-13). The truncation of the latter leads to loss in appetite regulation and obesity in experimental animals. The objectives of this study were to purify PRCP from a native source, establish a sensitive immunoassay for PRCP, and relate plasma PRCP concentrations to signs and symptoms of obesity, diabetes mellitus, and cardiovascular dysfunction.

METHODS: Purification of PRCP from human neutrophils and establishment of a sensitive ELISA was carried out with the use of samples from study participants. Three cohorts were studied: healthy individuals (n = 40); a chest pain cohort (Fast Assessment of Thoracic Pain by Neural Networks) (n = 165); and a community-based cohort [Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS)] (n = 1004).

RESULTS: PRCP was purified to homogeneity. Mean (SD) plasma concentrations in healthy individuals were 12.9 (3.2), mu g/L and were increased in patients with chest pain and in patients with obesity and/or diabetes mellitus (P < 0.0001). In the PIVUS cohort the concentrations were related to several measures of arterial plaque formation, thickness of arterial intima media and posterior wall of the heart (P = 0.04-0.000005); the Framingham score (r = 0.14, P < 0.0001); and concentrations of C-reactive protein (r = 0.16, P < 0.0001) and N-terminal pro B-type natriuretic peptide (r = -0.13, P < 0.0001).

CONCLUSIONS: Plasma concentrations of PRCP may be used to reflect metabolic conditions in individuals with obesity and diabetes mellitus. The associations of PRCP concentrations with signs of cardiovascular dysfunction and cardiovascular abnormalities suggest a pivotal role of the enzyme in disease. (c) 2012 American Association for Clinical Chemistry

Place, publisher, year, edition, pages
2012. Vol. 58, no 7, 1110-1115 p.
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Medical and Health Sciences
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URN: urn:nbn:se:uu:diva-179033DOI: 10.1373/clinchem.2011.179291ISI: 000306099300010OAI: oai:DiVA.org:uu-179033DiVA: diva2:543062
Available from: 2012-08-06 Created: 2012-08-06 Last updated: 2017-12-07Bibliographically approved

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Xu, ShengyuanLind, LarsZhao, LinshuLindahl, BertilVenge, Per

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Biochemial structure and functionInternal MedicineMedical GeneticsUCR-Uppsala Clinical Research CenterCardiology
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