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Association between glomerular filtration rate and endothelial function in an elderly community cohort
Högskolan Dalarna, Akademin Utbildning, hälsa och samhälle, Medicinsk vetenskap.ORCID-id: 0000-0003-3880-2132
Vise andre og tillknytning
2012 (engelsk)Inngår i: Atherosclerosis, ISSN 0021-9150, E-ISSN 1879-1484, Vol. 224, nr 1, s. 242-246Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND: Endothelial dysfunction is prevalent among individuals with chronic kidney disease. However, the association between glomerular filtration rate and endothelial function in the community is unclear and needs to be investigated in the general population.

METHODS: In the community-based Prospective Investigation of the Vasculature of Uppsala Seniors study (PIVUS, n = 952, mean age 70, women 49.3%), we investigated cross-sectional associations between estimated cystatin C-based glomerular filtration rate (eGFR), and 3 measures representing different aspects of endothelial function (endothelial-dependent vasodilation [EDV], endothelial independent vasodilatation [EIDV], and flow-mediated dilatation [FMD]). We also performed pre-specified sub-group analyses in participants with normal eGFR (>60 ml/min/1.73 m(2)).

RESULTS: In the whole cohort, 10 ml/min/1.73 m(2) higher eGFR was associated with 3% higher EDV (p = 0.001) and 2% higher EIDV (p = 0.007), adjusted for age and sex. The associations were attenuated and no longer statistically significant after adjusting for established cardiovascular risk factors. In participants with eGFR >60 ml/min/1.73 m(2), 10 ml higher eGFR was associated with 2% higher EDV (p = 0.04) after adjusting for sex and age. eGFR was not associated to FMD in any model or sub-sample.

CONCLUSION: This community-based study suggests that eGFR is associated with endothelial function also in persons with normal kidney function, but that this association is largely explained by confounding by established cardiovascular risk factors. Thus, our data do not support the notion of a direct causal interplay between renal and vascular function prior to the development of CKD.

sted, utgiver, år, opplag, sider
Elsevier, 2012. Vol. 224, nr 1, s. 242-246
Emneord [en]
Chronic kidney disease; Endothelium-dependent vasodilatation; Endothelial dysfunction; Flow-mediated dilatation; Glomerular filtration rate; Epidemiology
HSV kategori
Forskningsprogram
Hälsa och välfärd
Identifikatorer
URN: urn:nbn:se:du-10574DOI: 10.1016/j.atherosclerosis.2012.07.008ISI: 000308078000038PubMedID: 22841608OAI: oai:DiVA.org:du-10574DiVA, id: diva2:546009
Tilgjengelig fra: 2012-08-22 Laget: 2012-08-22 Sist oppdatert: 2017-12-07bibliografisk kontrollert
Inngår i avhandling
1. The kidney in different stages of the cardiovascular continuum
Åpne denne publikasjonen i ny fane eller vindu >>The kidney in different stages of the cardiovascular continuum
2013 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Patients with chronic kidney disease are at higher risk of developing cardiovascular disease. The complex, interaction between the kidney and the cardiovascular system is incompletely understood, particularly at the early stages of the cardiovascular continuum.

The overall aim of this thesis was to clarify novel aspects of the interplay between the kidney and the cardiovascular system at different stages of the cardiovascular continuum; from risk factors such as insulin resistance, inflammation and oxidative stress, via sub-clinical cardiovascular damage such as endothelial dysfunction and left ventricular dysfunction, to overt cardiovascular death.

This thesis is based on two community-based cohorts of elderly, Uppsala Longitudinal Study of Adult Men (ULSAM) and Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS).

The first study, show that higher insulin sensitivity, measured with euglycemic-hyperinsulinemic clamp technique was associated to improve estimated glomerular filtration rate (eGFR) in participants with normal fasting plasma glucose, normal glucose tolerance and normal eGFR. In longitudinal analyses, higher insulin sensitivity at baseline was associated with lower risk of impaired renal function during follow-up. In the second study, eGFR was inversely associated with different inflammatory markers (C-reactive protein, interleukin-6, serum amyloid A) and positively associated with a marker of oxidative stress (urinary F2-isoprostanes). In line with this, the urinary albumin/creatinine ratio was positively associated with these inflammatory markers, and negatively associated with oxidative stress.

In study three, higher eGFR was associated with better endothelial function as assessed by the invasive forearm model. Further, in study four, higher eGFR was significantly associated with higher left ventricular systolic function (ejection fraction). The 5th study of the thesis shows that higher urinary albumin excretion rate (UAER) and lower eGFR was independently associated with an increased risk for cardiovascular mortality. Analyses of global model fit, discrimination, calibration, and reclassification suggest that UAER and eGFR add relevant prognostic information beyond established cardiovascular risk factors in participants without prevalent cardiovascular disease.

Conclusion: this thesis show that the interaction between the kidney and the cardiovascular system plays an important role in the development of cardiovascular disease and that this interplay begins at an early asymptomatic stage of the disease process.

sted, utgiver, år, opplag, sider
Uppsala: Acta Universitatis Upsaliensis, 2013. s. 72
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206; 946 ; 946
Emneord
epidemiology, chronic kidney disease, cystatin C, glomerular filtration rate, albuminuria, euglycemic hyperinsulinemic clamp, insulin sensitivity, inflammation, oxidative stress, endothelial dysfunction and left ventricular dysfunction
HSV kategori
Forskningsprogram
Hälsa och välfärd, Nedsatt njurfunktion, insulinresistens, oxidativ stress och utvecklingen av hjärt-kärlsjukdomar
Identifikatorer
urn:nbn:se:du-13489 (URN)978-91-554-8792-8 (ISBN)
Disputas
2013-12-05, Universitetshuset Sal IX, Uppsala, 09:00 (svensk)
Opponent
Veileder
Tilgjengelig fra: 2013-12-12 Laget: 2013-12-10 Sist oppdatert: 2018-01-11bibliografisk kontrollert

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