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The atherogenic index of plasma and the risk of mortality in incident dialysis patients: Results from a nationwide prospective cohort in Korea.

 Mi Jung Lee  ;  Jung Tak Park  ;  Seung Hyeok Han  ;  Yong-Lim Kim  ;  Yon Su Kim  ;  Chul Woo Yang  ;  Nam-Ho Kim  ;  Shin-Wook Kang  ;  Hyung Jong Kim  ;  Tae-Hyun Yoo 
 PLOS ONE, Vol.12(5) : e0177499, 2017 
Journal Title
Issue Date
Adult ; Atherosclerosis/blood ; Atherosclerosis/complications ; Female ; Humans ; Kidney Diseases/complications ; Kidney Diseases/therapy ; Male ; Middle Aged ; Prospective Studies ; Renal Dialysis ; Republic of Korea/epidemiology
BACKGROUND: The atherogenic index of plasma (AIP), which is the logarithmic ratio of triglyceride (TG) to high-density lipoprotein cholesterol (HDL-C), had a linear relationship with clinical outcomes in the general population. However, the association of each lipid profile, TG and HDL-C, with survival was not straightforward in dialysis patients. This non-linear association led us to further investigate the prognostic impact of the AIP in these patients. METHODS: From a nationwide prospective cohort, 1,174 incident dialysis patients were included. Patients were categorized into quintiles according to the AIP. An independent association of the AIP with all-cause and cardiovascular mortality was determined. RESULTS: During a mean follow-up duration of 33.2 months, 170 patients (14.5%) died, and cardiovascular death was observed in 55 patients (4.7%). Multivariate Cox analyses revealed that the lowest (quintile 1, hazard ratio [HR] = 1.76, 95% confidence interval [CI] = 1.02-3.03) and the highest (quintile 5, HR = 2.15, 95% CI = 1.26-3.65) AIP groups were significantly associated with higher all-cause mortality compared to patients in quintile 3 (reference group). In terms of cardiovascular mortality, only the highest AIP group (quintile 5, HR = 2.59, 95% CI = 1.06-6.34) was significantly associated with increased risk of mortality. Sensitivity analyses showed that a U-shaped association between the AIP and all-cause mortality remained significant in non-diabetic and underweight to normal body mass index patients. CONCLUSIONS: Both the highest and the lowest AIP groups were independently associated with all-cause mortality, showing a U-shaped association. It suggested further studies are needed to identify targets and subgroups that can benefit from intervention of the AIP in incident dialysis patients.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Shin Wook(강신욱) ORCID logo https://orcid.org/0000-0002-5677-4756
Park, Jung Tak(박정탁) ORCID logo https://orcid.org/0000-0002-2325-8982
Yoo, Tae Hyun(유태현) ORCID logo https://orcid.org/0000-0002-9183-4507
Han, Seung Hyeok(한승혁) ORCID logo https://orcid.org/0000-0001-7923-5635
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