ABSTRACT
OBJECTIVES: Contrast-induced nephropathy (CIN) is a complication that is underestimated in clinical practice after cardiac catheterization. Recently, the value of interleukin (IL)-18 as a novel biomarker for the detection of acute renal failure has been highlighted. In the present study, we sought to investigate whether urine IL-18 may be an early diagnostic marker of CIN. DESIGN AND METHODS: We performed a nested case-control study using a hospital based cohort of all patients (n=157) admitted for elective PCI for stable angina to the Uludag University School of Medicine between February 2007 and June 2007. We identified 15 patients (9.5%) with CIN. Controls were matched with cases at an attempted 2.5:1 ratio by age and gender. Urinary IL-18 values were measured before as well as 24 and 72 h after the PCI. RESULTS: No statistically significant differences in urine IL-18 were detected between cases (n=15) and controls (n=36) or between the patient samples obtained before PCI and after the invasive procedure in both study groups. CONCLUSIONS: These findings argue against the hypothesis that urine IL-18 may be clinically useful as a biomarker of CIN after radiological procedures requiring intravascular administration of iodinated contrast media. Further studies with larger sample sizes are needed to validate our findings.
Subject(s)
Angioplasty, Balloon, Coronary , Contrast Media/adverse effects , Interleukin-18/urine , Kidney Diseases/chemically induced , Kidney Diseases/urine , Aged , Angioplasty, Balloon, Coronary/adverse effects , Biomarkers/urine , Case-Control Studies , Cohort Studies , Female , Humans , Kidney Diseases/diagnosis , Male , Middle AgedABSTRACT
OBJECTIVE: To investigate the association of cytokine gene polymorphism with the development of breast cancer. METHODS: The study was carried out in Uludag University Medical School, Bursa, Turkey. The study included 38 patients with breast cancer admitted to the Medical Oncology outpatient clinic, and 24 healthy controls, age and sex matched, from the Internal Medicine Department between 2004 and 2005. All genotyping of tumor necrosis factor-alpha (TNF-alpha), tumor growth factor-beta1 (TGF-beta1), interleukin (IL)-10, IL-6, and interferon-gamma (IFN-gamma) experiments were performed using polymerase chain reaction sequence-specific primers. RESULTS: The frequencies of IL-6-174GC genotype and IL-10 (-1082, -819, -592) GCC/ATA haplotype were significantly higher in the patient group (p=0.0008) when compared with controls (p=0.020). Significantly lower frequencies of IL-10 (-1082, -819, -592) ACC/ATA haplotype were observed in the patient group in comparison to the controls (p=0.026). The distribution of IFN-gamma +874, TNF-alpha 308, and TGF-beta1 codon 10-25 genotypes failed to show any statistical significant association with the development of breast cancer. CONCLUSION: Our data suggest that IL-10 (-1082, -819, -592) GCC/ATA haplotype and IL-6-174 GC genotype seem to be potential risk factors for the development of breast cancer. The presence of IL-10ACC/ATA haplotype may be protective for the oncogenesis of breast cancer.
Subject(s)
Breast Neoplasms/genetics , Cytokines/genetics , Polymorphism, Genetic , Adult , Aged , Breast Neoplasms/epidemiology , Case-Control Studies , Codon , Female , Genotype , Haplotypes , Humans , Interleukin-10/genetics , Interleukin-6/genetics , Middle Aged , Transforming Growth Factor beta/genetics , Tumor Necrosis Factor-alpha/genetics , Turkey/epidemiologyABSTRACT
Insulin resistance (IR) and obesity may be risk factors for breast cancer. The mechanism of IR in patients with cancer has not been fully clarified yet. This study was conducted to evaluate the possible role of circulating cytokines; tumor necrosis factor-alpha (TNF-alpha) and interleukin 6 (IL-6) in inducing IR in 20 overweight or obese patients with early stage breast cancer and to compare their levels with that of body mass index matched 20 healthy controls. IR was calculated by homeostasis model assessment (HOMA) method. Four groups were formed according to a 2.7 HOMA-IR cut-off value as breast cancer with or without IR and controls with or without IR. IL-6 and HOMA-IR values were found to be higher in breast cancer patients with IR compared to other groups. There was no significant difference in TNF-alpha levels between groups. HOMA-IR values correlated with estradiol and IL-6 levels in all breast cancer patients but not TNF-alpha. HOMA-IR values, serum insulin, estradiol and IL-6 levels in the receptor positive group were significantly higher than those of the receptor negative group. These results suggested a possible contribution of endogenous IL-6 production and hyperinsulinemia to the development of breast cancer in overweight or obese patients with prominent IR.
