title: [Prevalence of subnormal glomerular filtration rate in patients with diabetes mellitus].
abstract: OBJECTIVE
  To evaluate prevalence of subnormal glomerular filtration rate (GFR) in diabetes mellitus (DM) patients with reference to albuminuria level.
  
  
  METHODS
  GFR by MDRD and urine excretion of protein/albumin were estimated in 851 diabetic patients (473 with type 1 DM and 378 with type 2 DM).
  
  
  RESULTS
  Normoalbuminuria (NAU), microalbuminuria (MAU) and proteinuria were detected in 54, 16 and 30% type 1 diabetics, respectively; 77% had subnormal GFR, in NAU 8.3% had GFR decline (< 60 ml/min) corresponding to stage III-IV chronic disease of the kidneys. In MAU the latter was present in 16.4%, in proteinuria--in 62.8%. Type 2 diabetics had NAU in 33.6% cases, MAU--in 17.7%, proteinuria--in 48.7%. Subnormal GFR < 60 ml/min was found in 40% cases with NAU and MAU. Most patients with proteinuria had chronic disease of the kidneys of stage III-V In a normal creatinine concentration in blood serum subnormal GFR < 60 ml/min was observed in type 1 DM in 7.6, in type 2 DM--in 33% cases.
  
  
  CONCLUSIONS
  Prevalence of subnormal GFR in diabetic patients with NAU and MAU is rather high. This necessitates wide introduction of this index in screening, follow-up and classification of renal damage severity in DM as well as estimation of albuminuria/proteinuria.
authors.forename: I I
authors.initials: II
authors.lastname: Trofimenko
authors.forename: V A
authors.initials: VA
authors.lastname: Dobronravov
authors.forename: N N
authors.initials: NN
authors.lastname: Bystrova
authors.forename: Iu V
authors.initials: IuV
authors.lastname: Drozdova
authors.forename: O V
authors.initials: OV
authors.lastname: Galkina
authors.forename: A V
authors.initials: AV
authors.lastname: Smirnov
mesh_terms: D003922:Diabetes Mellitus, Type 1 / Q000150:complications* / Q000503:physiopathology / Q000652:urine; D003924:Diabetes Mellitus, Type 2 / Q000150:complications* / Q000503:physiopathology / Q000652:urine; D018450:Disease Progression; D005500:Follow-Up Studies; D005919:Glomerular Filtration Rate / Q000502:physiology*; D006801:Humans; D009391:Nephelometry and Turbidimetry; D015995:Prevalence; D011379:Prognosis; D011507:Proteinuria / Q000453:epidemiology* / Q000503:physiopathology / Q000652:urine; D012189:Retrospective Studies; D012307:Risk Factors; D012426:Russia / Q000453:epidemiology