Serum IL8 is not associated with cardiovascular events but with all-cause mortality

Abstract Background The aim of this study is to investigate if IL8 levels were associated with incident cardiovascular (CV) events (CVE) and mortality (all-cause, CV, and cancer) in a cohort of 60 years old men and women from Stockholm (60YO). Methods The 60YO comprises 4232 participants; baseline p...

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Main Authors: Ilais Moreno Velásquez, Ashwini Gajulapuri, Karin Leander, Anita Berglund, Ulf de Faire, Bruna Gigante
Format: Article
Language:English
Published: BMC 2019-02-01
Series:BMC Cardiovascular Disorders
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12872-019-1014-6
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author Ilais Moreno Velásquez
Ashwini Gajulapuri
Karin Leander
Anita Berglund
Ulf de Faire
Bruna Gigante
author_facet Ilais Moreno Velásquez
Ashwini Gajulapuri
Karin Leander
Anita Berglund
Ulf de Faire
Bruna Gigante
author_sort Ilais Moreno Velásquez
collection DOAJ
description Abstract Background The aim of this study is to investigate if IL8 levels were associated with incident cardiovascular (CV) events (CVE) and mortality (all-cause, CV, and cancer) in a cohort of 60 years old men and women from Stockholm (60YO). Methods The 60YO comprises 4232 participants; baseline period: 1997–1999. The cohort is matched annually to population registries to record deaths and incident CVE. Serum IL8 was measured in 4011 participants and categorized in quartiles. Cox proportional hazard models were used to estimate the CVE and mortality risk, expressed as hazard ratios (HR) with 95% confidence intervals (CI). Potential confounding was addressed by adjusting for traditional CV risk factors (CVE estimates) and by sex, life style habits, metabolic factors (mortality estimates). Laplace regression was used to calculate the difference in time until a certain percentage of the cohort died according to IL8 levels. Results During 16.5 years follow up, 522 incident CVE were recorded and 647 study participants died. IL8 was not associated with CVE risk (IL8 Q4 vs Q1, HR of 0.95; 95% CI 0.75–1.22). Compared to Q1, IL8 Q4 was associated with all-cause mortality (adjusted HR 1.28; 95% CI 1.02–1.63). No association was observed with CV and cancer related mortality in the fully adjusted model. Participants with IL8 above the median died of any cause ≈1.3 years before the 15% of the population had died. Conclusion Elevated IL8 levels were not associated with CVE risk and CV mortality, but were associated with an increased risk of all-cause mortality regardless of the underlying cause.
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spelling doaj.art-b3fd86bbcd2042bc96a3098f23047ba62022-12-21T19:30:31ZengBMCBMC Cardiovascular Disorders1471-22612019-02-011911810.1186/s12872-019-1014-6Serum IL8 is not associated with cardiovascular events but with all-cause mortalityIlais Moreno Velásquez0Ashwini Gajulapuri1Karin Leander2Anita Berglund3Ulf de Faire4Bruna Gigante5Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska InstitutetUnit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska InstitutetUnit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska InstitutetUnit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska InstitutetUnit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska InstitutetUnit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska InstitutetAbstract Background The aim of this study is to investigate if IL8 levels were associated with incident cardiovascular (CV) events (CVE) and mortality (all-cause, CV, and cancer) in a cohort of 60 years old men and women from Stockholm (60YO). Methods The 60YO comprises 4232 participants; baseline period: 1997–1999. The cohort is matched annually to population registries to record deaths and incident CVE. Serum IL8 was measured in 4011 participants and categorized in quartiles. Cox proportional hazard models were used to estimate the CVE and mortality risk, expressed as hazard ratios (HR) with 95% confidence intervals (CI). Potential confounding was addressed by adjusting for traditional CV risk factors (CVE estimates) and by sex, life style habits, metabolic factors (mortality estimates). Laplace regression was used to calculate the difference in time until a certain percentage of the cohort died according to IL8 levels. Results During 16.5 years follow up, 522 incident CVE were recorded and 647 study participants died. IL8 was not associated with CVE risk (IL8 Q4 vs Q1, HR of 0.95; 95% CI 0.75–1.22). Compared to Q1, IL8 Q4 was associated with all-cause mortality (adjusted HR 1.28; 95% CI 1.02–1.63). No association was observed with CV and cancer related mortality in the fully adjusted model. Participants with IL8 above the median died of any cause ≈1.3 years before the 15% of the population had died. Conclusion Elevated IL8 levels were not associated with CVE risk and CV mortality, but were associated with an increased risk of all-cause mortality regardless of the underlying cause.http://link.springer.com/article/10.1186/s12872-019-1014-6Interleukin 8Cardiovascular diseaseAll-cause mortalityCancer mortalityCardiovascular mortality
spellingShingle Ilais Moreno Velásquez
Ashwini Gajulapuri
Karin Leander
Anita Berglund
Ulf de Faire
Bruna Gigante
Serum IL8 is not associated with cardiovascular events but with all-cause mortality
BMC Cardiovascular Disorders
Interleukin 8
Cardiovascular disease
All-cause mortality
Cancer mortality
Cardiovascular mortality
title Serum IL8 is not associated with cardiovascular events but with all-cause mortality
title_full Serum IL8 is not associated with cardiovascular events but with all-cause mortality
title_fullStr Serum IL8 is not associated with cardiovascular events but with all-cause mortality
title_full_unstemmed Serum IL8 is not associated with cardiovascular events but with all-cause mortality
title_short Serum IL8 is not associated with cardiovascular events but with all-cause mortality
title_sort serum il8 is not associated with cardiovascular events but with all cause mortality
topic Interleukin 8
Cardiovascular disease
All-cause mortality
Cancer mortality
Cardiovascular mortality
url http://link.springer.com/article/10.1186/s12872-019-1014-6
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