title: Atrial natriuretic peptide in type 2 diabetes mellitus: response to a physiological mixed meal and relationship to renal function.
abstract: Relatively few data exist on atrial natriuretic peptide (ANP) characteristics in Type 2 diabetes mellitus (DM). Therefore, plasma immunoreactive ANP concentrations were measured before and for 4 h following the ingestion of a physiological mixed meal in 8 newly diagnosed, normotensive, normoalbuminuric, patients with Type 2 DM and 6 normotensive, non-diabetic controls. In patients with Type 2 DM, basal plasma ANP concentrations were 4.0 +/- 2.0 and not significantly changed following ingestion of the meal, with peak levels of 4.9 +/- 2.8 pmol l(-1). Non-diabetic controls had higher basal plasma ANP concentrations, 8.7 +/- 3.4 pmol l(-1) (p < 0.05), significantly increasing to a peak of 11.9 +/- 6.3 pmol l(-1) at 30 min post meal. Extracellular fluid volume (ECV) was not different between diabetic patients and controls (15877 +/- 2679 vs 13668 +/- 1792 ml3). Glomerular filtration rate (GFR) (isotopic clearance corrected for body surface area) was elevated in diabetic patients (mean +/- SD) 130 +/- 39 vs 98 +/- 10 ml min(-1), p < 0.05). For the DM subjects, basal ANP levels were negatively correlated with GFR (rs - 0.74, p < 0.05) and effective renal plasma flow (ERPF) (rs - 0.8, p < 0.05). We conclude that patients with Type 2 DM demonstrate reduced basal plasma ANP concentrations which are inversely correlated to renal function. In contrast to non-diabetic controls, ANP in Type 2 DM does not rise in response to feeding.
authors.affiliation: Department of Medicine/Endocrinology, Royal Liverpool University Hospital, UK.
authors.forename: P D
authors.initials: PD
authors.lastname: Chattington
authors.forename: J V
authors.initials: JV
authors.lastname: Anderson
authors.forename: L H
authors.initials: LH
authors.lastname: Rees
authors.forename: G P
authors.initials: GP
authors.lastname: Leese
authors.forename: J R
authors.initials: JR
authors.lastname: Peters
authors.forename: J P
authors.initials: JP
authors.lastname: Vora
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D009320:Atrial Natriuretic Factor / Q000097:blood* / Q000187:drug effects*; D001786:Blood Glucose / Q000187:drug effects / Q000378:metabolism; D001794:Blood Pressure / Q000187:drug effects / Q000502:physiology; D003924:Diabetes Mellitus, Type 2 / Q000097:blood* / Q000503:physiopathology; D004040:Dietary Carbohydrates / Q000008:administration & dosage / Q000494:pharmacology; D004041:Dietary Fats / Q000008:administration & dosage / Q000494:pharmacology; D004044:Dietary Proteins / Q000008:administration & dosage / Q000494:pharmacology; D005215:Fasting; D005526:Food, Formulated; D005919:Glomerular Filtration Rate / Q000187:drug effects; D006442:Glycated Hemoglobin / Q000187:drug effects / Q000378:metabolism; D006400:Hematocrit; D006801:Humans; D007328:Insulin / Q000097:blood; D007668:Kidney / Q000187:drug effects / Q000503:physiopathology; D007677:Kidney Function Tests; D008297:Male; D008875:Middle Aged; D017596:Renal Plasma Flow, Effective / Q000187:drug effects; D014508:Urea / Q000097:blood
chemical_list: D009320:Atrial Natriuretic Factor; D001786:Blood Glucose; D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins; D006442:Glycated Hemoglobin; D007328:Insulin; D014508:Urea