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    Elevated serum uric acid in nondiabetic people mark pro-inflammatory state and HDL dysfunction and independently predicts coronary disease
    (Springer London Ltd, 2013) Onat, Altan; Can, Gunay; Ornek, Ender; Altay, Servet; Yuksel, Murat; Ademoglu, Evin
    We explored the association of serum uric acid (UA) concentrations with pro-inflammatory state and high-density lipoprotein (HDL) dysfunction. UA tertiles in tracked 1,508 nondiabetic participants were analyzed cross-sectionally for associations with inflammation biomarkers and protective proteins over a mean follow-up of 4.9 years for incident coronary heart disease (CHD) using Cox proportional hazards regression. In the absence of metabolic syndrome (MetS), UA tertiles significantly distinguished, in each sex, increasing categories of three MetS components (inflammation/oxidation markers, apolipoprotein (apo)B) and (inversely) current smoking (but not protective proteins such as HDL, apoA-I, and adiponectin). Distinctions attenuated in the presence of MetS. Linear regression model revealed fasting triglycerides (1.86 mg/dl variance), male sex, and gamma-glutamyl transferase and age as covariates of UA levels in women. In Cox analysis, incident CHD (n = 137) was predicted by mid and upper UA tertile in men alone at significant hazard ratios of 2.7, additively to conventional risk factors. Elevated serum UA levels, linked to triglycerides, mark in nondiabetic people pro-inflammatory state, and, notably, HDL dysfunction. CHD risk is independently predicted by elevated UA levels in nondiabetic men and is modulated by MetS and gender.
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    TARF Survey 2011: mortality and performance in the long-term follow-up
    (Turkish Soc Cardiology, 2012) Onat, Altan; Aydin, Mesut; Koroglu, Bayram; Ornek, Ender; Altay, Servet; Celik, Ethem; Karagoz, Ahmet
    Objectives: We analyzed all-cause and coronary mortality data of the Turkish Adult Risk Factor Study cohort in Marmara and Central Anatolia regions, surveyed in 2011, and overall performance of long-term (21 years) follow-up of participants. Study design: A total of 1,588 participants with an age range of 45 to 74 years were surveyed. Information on the mode of death was obtained from first-degree relatives and/or personnel of local health offices. Information on survivors was obtained from history, physical examination, and 12-lead electrocardiograms. Loss to follow-up was defined as the lack of physical examination for at least eight years. Results: Of the surveyed participants, 854 were examined, information on health status was obtained in 606 subjects, 46 individuals (28 men, 18 women) were ascertained to have died, and 82 subjects were lost to follow-up. A total of 2,800 person-years were added to follow-up. Nineteen deaths were attributed to coronary heart disease (CHD) and five deaths to cerebrovascular events. Overall mortality was estimated as 10.9 per 1000 person-years. In the age bracket of 45-74 years, overall annual all-cause mortality and CHD mortality were 12.8 and 5.5 per mille, respectively. Based on the total loss to follow-up (31.2%) during the past two decades, an annual loss to follow-up may be derived as 19.3 for every 1000 participants. This loss was nearly twice as high in participants living in big cities compared to those in smaller towns and rural areas. Conclusion: A trend to slight reduction in coronary mortality, though not in overall mortality, before the age 75 years is noted in Turks. Annual loss to follow-up amounts to 2% of the participants.