title: The increase in albuminuria induced by exercise is not associated with preferential excretion of glycated albumin in type 1 (insulin-dependent) diabetic patients.
abstract: The increase in urinary albumin excretion induced by acute exercise in Type 1 (insulin-dependent) diabetic patients is associated with the urinary excretion of cationic proteins. To test whether the renal excretion of glycated albumin (more anionic than non-glycated albumin) is affected by exercise, we submitted seven normoalbuminuric (albumin excretion rate less than 30 mg/24 h) Type 1 diabetic patients and six well-matched healthy subjects to an exercise test (600 kpm/min for 20 min) on a bicycle ergometer, preceded and followed by a 1-h resting period. The selectivity index (renal clearance of non-glycated/glycated albumin) was not significantly different among the pre-exercise, exercise and post-exercise periods, either in the normal subjects (1.01 +/- 0.03 vs 1.08 +/- 0.06 vs 1.08 +/- 0.05) or in the diabetic patients (1.25 +/- 0.09 vs 1.20 +/- 0.07 vs 1.20 +/- 0.06), whereas it was significantly higher (p less than 0.05) in diabetic patients compared to healthy subjects during pre-exercise. These results are not consistent with the hypothesis that acute exercise may induce a preferential excretion of glycated albumin.
authors.affiliation: Institute of Internal Medicine, University of Turin, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Cavallo-Perin
authors.forename: A
authors.initials: A
authors.lastname: Chiambretti
authors.forename: V
authors.initials: V
authors.lastname: Calefato
authors.forename: M
authors.initials: M
authors.lastname: Tomalino
authors.forename: R
authors.initials: R
authors.lastname: Urbino
authors.forename: G
authors.initials: G
authors.lastname: Cecchini
authors.forename: G
authors.initials: G
authors.lastname: Pagano
mesh_terms: D000328:Adult; D000419:Albuminuria; D001794:Blood Pressure; D003404:Creatinine / Q000378:metabolism; D003922:Diabetes Mellitus, Type 1 / Q000503:physiopathology* / Q000652:urine; D005080:Exercise Test; D005260:Female; D006442:Glycated Hemoglobin / Q000032:analysis; D017127:Glycation End Products, Advanced; D006801:Humans; D008297:Male; D005082:Physical Exertion; D012016:Reference Values; D012709:Serum Albumin / Q000032:analysis; D000093423:Glycated Serum Albumin
chemical_list: D003404:Creatinine; D006442:Glycated Hemoglobin; D017127:Glycation End Products, Advanced; D012709:Serum Albumin; D000093423:Glycated Serum Albumin