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Urine metabolites are associated with glomerular lesions in type 2 diabetes.

ABSTRACT: INTRODUCTION:Little is known about the association of urine metabolites with structural lesions in persons with diabetes. OBJECTIVES:We examined the relationship between 12 urine metabolites and kidney structure in American Indians with type 2 diabetes. METHODS:Data were from a 6-year clinical trial that assessed renoprotective efficacy of losartan, and included a kidney biopsy at the end of the treatment period. Metabolites were measured in urine samples collected within a median of 6.5 months before the research biopsy. Associations of the creatinine-adjusted urine metabolites with kidney structural variables were examined by Pearson's correlations and multivariable linear regression after adjustment for age, sex, diabetes duration, hemoglobin A1c, mean arterial pressure, glomerular filtration rate (iothalamate), and losartan treatment. RESULTS:Participants (n?=?62, mean age 45?±?10 years) had mean?±?standard deviation glomerular filtration rate of 137?±?50 ml/min and median (interquartile range) urine albumin:creatinine ratio of 34 (14-85) mg/g near the time of the biopsy. Urine aconitic and glycolic acids correlated positively with glomerular filtration surface density (partial r?=?0.29, P?=?0.030 and r?=?0.50, P?

SUBMITTER: Saulnier PJ

PROVIDER: S-EPMC6461445 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Urine metabolites are associated with glomerular lesions in type 2 diabetes.

Saulnier Pierre-Jean PJ Darshi Manjula M Wheelock Kevin M KM Looker Helen C HC Fufaa Gudeta D GD Knowler William C WC Weil E Jennifer EJ Tanamas Stephanie K SK Lemley Kevin V KV Saito Rintaro R Natarajan Loki L Nelson Robert G RG Sharma Kumar K

Metabolomics : Official journal of the Metabolomic Society 20180608 6

<h4>Introduction</h4>Little is known about the association of urine metabolites with structural lesions in persons with diabetes.<h4>Objectives</h4>We examined the relationship between 12 urine metabolites and kidney structure in American Indians with type 2 diabetes.<h4>Methods</h4>Data were from a 6-year clinical trial that assessed renoprotective efficacy of losartan, and included a kidney biopsy at the end of the treatment period. Metabolites were measured in urine samples collected within a ...[more]

PMID: 30830355

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Project description:BackgroundAn impaired glomerular filtration rate (GFR) leads to end-stage renal disease and increases the risks of cardiovascular disease and death. Persons with type 1 diabetes are at high risk for kidney disease, but there are no interventions that have been proved to prevent impairment of the GFR in this population.MethodsIn the Diabetes Control and Complications Trial (DCCT), 1441 persons with type 1 diabetes were randomly assigned to 6.5 years of intensive diabetes therapy aimed at achieving near-normal glucose concentrations or to conventional diabetes therapy aimed at preventing hyperglycemic symptoms. Subsequently, 1375 participants were followed in the observational Epidemiology of Diabetes Interventions and Complications (EDIC) study. Serum creatinine levels were measured annually throughout the course of the two studies. The GFR was estimated with the use of the Chronic Kidney Disease Epidemiology Collaboration formula. We analyzed data from the two studies to determine the long-term effects of intensive diabetes therapy on the risk of impairment of the GFR, which was defined as an incident estimated GFR of less than 60 ml per minute per 1.73 m(2) of body-surface area at two consecutive study visits.ResultsOver a median follow-up period of 22 years in the combined studies, impairment of the GFR developed in 24 participants assigned to intensive therapy and in 46 assigned to conventional therapy (risk reduction with intensive therapy, 50%; 95% confidence interval, 18 to 69; P=0.006). Among these participants, end-stage renal disease developed in 8 participants in the intensive-therapy group and in 16 in the conventional-therapy group. As compared with conventional therapy, intensive therapy was associated with a reduction in the mean estimated GFR of 1.7 ml per minute per 1.73 m(2) during the DCCT study but during the EDIC study was associated with a slower rate of reduction in the GFR and an increase in the mean estimated GFR of 2.5 ml per minute per 1.73 m(2) (P<0.001 for both comparisons). The beneficial effect of intensive therapy on the risk of an impaired GFR was fully attenuated after adjustment for glycated hemoglobin levels or albumin excretion rates.ConclusionsThe long-term risk of an impaired GFR was significantly lower among persons treated early in the course of type 1 diabetes with intensive diabetes therapy than among those treated with conventional diabetes therapy. (Funded by the National Institute of Diabetes and Digestive and Kidney Diseases and others; DCCT/EDIC ClinicalTrials.gov numbers, NCT00360815 and NCT00360893.).

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Urine metabolites are associated with glomerular lesions in type 2 diabetes.

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Urine metabolites are associated with glomerular lesions in type 2 diabetes.

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