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    Association between ischemia-modified albumin, homocysteine, vitamin B-12 and folic acid in patients with severe sepsis
    (WALTER DE GRUYTER GMBH, 2012) Erdem, Said Sami; Yerlikaya, Fatma Humeyra; Cicekler, Humeyra; Gul, Mehmet
    Background: The aim of the present study was to investigate scrum ischemia-modified albumin (IMA), homocysteine, malondialdehyde (MDA), vitamin B-12 and folic acid levels in patients with severe sepsis, compared to healthy control subjects. Also, we examined associations of these parameters with high-sensitivity C-reactive protein (hsCRP) in patients with severe sepsis and healthy control subjects. Methods: This study was performed on 71 (40 male, 31 female) patients with severe sepsis aged 18-65 years and 70 (34 male, 36 female) healthy control subjects aged 18-65 years. Samples of patients were obtained at study entry within 24 h of onset of severe sepsis. Results: Serum IMA, homocysteine and MDA levels of the patients with severe sepsis were significantly higher than those of the healthy control subjects (p<0.0 I for IMA and homocysteine, and p<0.001 for MDA). There was no significant difference between serum vitamin B12 and folic acid levels of the groups. Serum hsCRP levels were positively correlated with IMA (p<0.01) and MDA (p<0.01) in the patients with severe sepsis. Conclusions: Our findings show that IMA may be useful as a prognostic biomarker because it can indicate the severity of illness in patients with sepsis.
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    Plasma Fatty Acid Composition in Continuous Ambulatory Peritoneal Dialysis Patients: An Increased Omega-6/Omega-3 Ratio and Deficiency of Essential Fatty Acids
    (TAYLOR & FRANCIS LTD, 2011) Yerlikaya, Fatma Humeyra; Mehmetoglu, Idris; Kurban, Sevil; Tonbul, Zeki
    Patients with end-stage renal disease, including those treated with peritoneal dialysis, have a high risk for death, particularly from cardiovascular causes. Plasma fatty acid (FA) composition is used as an indicator of disease risk, because its alteration has been related to metabolic disease and cardiovascular disease. For this purpose, we have measured plasma FA composition in continuous ambulatory peritoneal dialysis (CAPD) patients and compared them with those of healthy subjects. This study was performed on 51 (21 M, 30 F) CAPD patients at least 6 months under dialysis, aged 20-75 years (mean 47.81 +/- 11.8 years) and 45 (25 M, 20 F) healthy control subjects aged 20-60 years (mean 38.62 +/- 12.9 years). Plasma 10-cis-pentadecanoic acid, 10-cis-heptadecanoic acid, heneicosanoic acid, tricosanoic acid, nervonic acid, saturated fatty acid, and monounsaturated FA levels and delta 9 desaturase activity were significantly higher whereas linoleic acid, linolenic acid, 11,14-eicosedienoic acid, arachidonic acid, docosahexaenoic acid, and omega-3 FA levels were significantly lower in the CAPD group than those in the healthy group. Our results show that there are FA abnormalities and especially a depletion in essential FA levels and a high level of omega-6/omega-3 ratio in CAPD patients, the underlying mechanism of which is not known and needs to be investigated. Therefore, we believe that essential FA supplementation should be encouraged for CAPD patients.