Cited by 190Chronic Kidney Disease and DiabetesRenal Diseases and GlomerulopathiesDiabetes Management and Research

The Early Natural History of Nephropathy in Type 1 Diabetes

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Steinke, Julia M., Sinaiko, Alan R., Kramer, Michael S., Suissa, Samy, Chavers, Blanche M., Mauer, Michael, for the International Diabetic Nephropathy Study Group·2005·Diabetes

Abstract

Predictors of albumin excretion rate (AER) abnormalities could provide earlier indicators of diabetic nephropathy risk. Data from the Natural History Study, a prospective 5-year observation of renal structure and function in young type 1 diabetic patients, were examined for predictors of AER patterns in normoalbuminuric type 1 diabetic patients. Included were 170 patients (96 females) (aged 16.7 ± 5.9 years, duration of diabetes 8.0 ± 4.3 years) with normal blood pressure, normoalbuminuria (AER <20 μg/min), and eight or more follow-up visits over 5 years. AER, blood pressure, and HbA1c (A1C) were determined quarterly and glomerular filtration rate (GFR) annually. Persistent microalbuminuria (PMA) was defined as 20–200 μg/min in two of three consecutive values within 6–12 months. Four different AER patterns were identified. Group 1 (n = 99): all values <20 μg/min. Group 2 (n = 49): intermittent levels >20 μg/min but not meeting microalbuminuria criteria. Group 3 (n = 14): PMA during follow-up but normoalbuminuria at study exit. Group 4 (n = 8): microalbuminuria at study exit. Group 4 (497 ± 95 nm, P < 0.01) and group 3 (464 ± 113 nm, P = 0.03) patients had greater baseline glomerular basement membrane (GBM) width versus group 1 (418 ± 67 nm). Baseline GFR in group 4 (163 ± 37 ml · min−1 · 1.73 m−2) was higher than group 1 (143 ± 28 ml · min−1 · 1.73 m−2, P = 0.04). A1C was higher in group 2 (9.0 ± 1.2%) than group 1 (8.4 ± 1.1%, P = 0.008). Thus, greater increases in GBM width and GFR were predictors of PMA. Since 64% of the patients that developed microalbuminuria reverted to normoalbuminuria, the risk of diabetic nephropathy as defined by current microalbuminuria criteria is unclear.

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  • Approximately 20% of people with diabetes progress to end-stage kidney disease without an increase in moderately increased albuminuria.

    “Moreover, approximately 20% of people with diabetes progress to end-stage kidney disease without an increase in moderately increased albuminuria (488).”

    From Guidelines and Recommendations for Laboratory Analysis in the Diagnosis and Management of Diabetes Mellitus (2023) · cites this paper as [488]

    The introduction discusses ESRD risk and persistent microalbuminuria, while the Discussion describes kidney injury that can precede albuminuria. Neither section reports that approximately 20% of people with diabetes reach ESRD without an increase in albuminuria. Searches for that percentage and for progression to ESRD without microalbuminuria found no supporting passage. (LLM, conf=0.75)

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  • About 20% of people progress to end-stage kidney disease without an increase in low levels of albuminuria.

    “Moreover, about 20% of people progress to end-stage kidney disease without an increase in low levels of albuminuria (341).”

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Authors
Steinke, J. M., Sinaiko, A. R., Kramer, M. S., Suissa, S., Chavers, B. M., Mauer, M., & for the International Diabetic Nephropathy Study Group
Affiliations
  • University of Minnesota (US)
  • McGill University (CA)
Venue
Diabetes
Published
2005-07-01
Volume
54
Issue
7
Pages
2164-2171
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2112256909
Cited by
190
References
56
Citations by year
2026: 3 · 2025: 1 · 2024: 2 · 2023: 5 · 2022: 4 · 2021: 6 · 2020: 4 · 2019: 4 · 2018: 9 · 2017: 7 · 2016: 13 · 2015: 7 · 2014: 15 · 2013: 13 · 2012: 9
FWCI
9.75
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (RR00400)
  • Canadian Institutes of Health Research
  • National Center for Research Resources (M01RR000400, M01-RR00400)
Topics
  • Health Sciences › Medicine › Nephrology › Chronic Kidney Disease and Diabetes
  • Health Sciences › Medicine › Nephrology › Renal Diseases and Glomerulopathies
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
Keywords
type 1 diabetes, diabetic nephropathy, urinary albumin excretion rate, microalbuminuria, normoalbuminuria, glomerular filtration rate, HbA1c, glycemic control, youth with diabetes, natural history research, albuminuria regression, blood pressure, renal function, renal structure
MeSH terms
Adolescent, Albuminuria, Blood Pressure, Diabetes Mellitus, Type 1, Diabetic Nephropathies, Female, Follow-Up Studies, Glomerular Filtration Rate, Humans, Kidney, Male, Reference Values, Time Factors, Cohort Studies, Age of Onset, Disease Progression

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