Smoking and progression of diabetic nephropathy in patients with type 1 diabetes

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Feodoroff , M , Harjutsalo , V , Forsblom , C , Thorn , L , Waden , J , Tolonen , N , Lithovius , R & Groop , P-H 2016 , ' Smoking and progression of diabetic nephropathy in patients with type 1 diabetes ' , Acta Diabetologica , vol. 53 , no. 4 , pp. 525-533 . https://doi.org/10.1007/s00592-015-0822-0

Title: Smoking and progression of diabetic nephropathy in patients with type 1 diabetes
Author: Feodoroff, Maija; Harjutsalo, Valma; Forsblom, Carol; Thorn, Lena; Waden, Johan; Tolonen, Nina; Lithovius, Raija; Groop, Per-Henrik
Contributor organization: Clinicum
Medicum
Department of Medical and Clinical Genetics
Department of Medicine
Nefrologian yksikkö
Research Programs Unit
Diabetes and Obesity Research Program
Per Henrik Groop / Principal Investigator
Date: 2016-08
Language: eng
Number of pages: 9
Belongs to series: Acta Diabetologica
ISSN: 0940-5429
DOI: https://doi.org/10.1007/s00592-015-0822-0
URI: http://hdl.handle.net/10138/224117
Abstract: To evaluate the effect of cumulative smoking on the development of diabetic nephropathy. Study included 3613 patients with type 1 diabetes, participating in the Finnish Diabetic Nephropathy Study. The 12-year cumulative risk of microalbuminuria, macroalbuminuria and end-stage renal disease (ESRD) was estimated for current, ex- and nonsmokers. Cox regression analyses, with multivariable adjustments for other risk factors for diabetic nephropathy, were used to evaluate the risk at different stages of diabetic nephropathy based on the cumulative amount of smoking in pack-years. The 12-year cumulative risk of microalbuminuria was 18.9 % (95 % CI 14.6-23.0, P <0.0001) for current smokers and 15.1 % (10.3-19.6, P = 0.087) for ex-smokers, compared with 10.0 % (7.8-12.1) for nonsmokers. The corresponding risks of macroalbuminuria were 14.4 % (95 % CI 10.8-17.9, P <0.0001), 6.1 % (3.5-8.6, P = 0.082) and 4.7 % (3.0-6.4), respectively. The 12-year cumulative risk of ESRD was 10.3 % (95 % CI 8.4-12.4, P <0.0001) for current smokers and 10.0 % (7.9-12.3, P <0.0001) for ex-smokers, compared with 5.6 % (4.6-6.7) for nonsmokers. In the current smokers, one pack-year increased the risk of macroalbuminuria with a HR of 1.025 (1.010-1.041) and the risk of ESRD with a HR of 1.014 (1.001-1.026) compared with nonsmokers, in the fully adjusted model. In the ex-smokers, the risk of macroalbuminuria and ESRD was no different from the risk in nonsmokers after multivariable adjustment. Current smoking is a risk factor for the progression of diabetic nephropathy and the risk increases with the increasing dose of smoking. Ex-smokers seem to carry a similar risk of progression of diabetic nephropathy as nonsmokers.
Subject: Type 1 diabetes
Diabetic nephropathy
Microalbuminuria
Macroalbuminuria
End-stage renal disease
Smoking
Smoking cessation
CIGARETTE-SMOKING
INSULIN-RESISTANCE
RISK-FACTORS
MICROALBUMINURIA
COMPLICATIONS
MACROALBUMINURIA
ALBUMINURIA
MELLITUS
COHORT
3121 General medicine, internal medicine and other clinical medicine
3142 Public health care science, environmental and occupational health
Peer reviewed: Yes
Usage restriction: openAccess
Self-archived version: publishedVersion


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