Melatonin Attenuates Contrast-Induced Nephropathy in Diabetic Rats: The Role of Interleukin-33 and Oxidative Stress

Background. Inflammation and oxidative stress (OxS) contribute to the pathogenesis of diabetic kidney disease (DKD) and contrast-induced nephropathy (CIN). Patients with DKD were found to be more prone to CIN. Interleukin-33 (IL-33) is a proinflammatory cytokine, but its role in DKD and CIN is unknown. Methods. Thirty male Sprague-Dawley rats were enrolled. The first group was comprised of healthy rats (HRs), whereas the other four groups were made up of diabetic rats (DRs), diabetic rats with contrast-induced nephropathy (CIN + DRs), melatonin-treated diabetic rats (MTDRs), and melatonin-treated CIN + DRs (MTCIN + DRs). All groups except the HRs received 50 mg/kg/day streptozotocin (STZ). CIN + DRs were constituted by administrating 1.5 mg/kg of intravenous radiocontrast dye on the 35th day. MTDRs and MTCIN + DRs were given 20 mg/kg/day of intraperitoneal injection of melatonin (MT) from the 28th day for the constitutive seven days. Results. We observed increased IL-33 in the kidney tissue following induction of CIN in DRs. To determine whether MT is effective in preventing CIN, we administered MT in CIN + DRs and demonstrated that kidney tissue levels of OxS markers, inflammatory cytokines, and IL-33 were significantly diminished in MTCIN + DRs compared with other groups without MT treatment (p<0.05). Conclusion. Inhibition of IL-33 with MT provides therapeutic potential in DKD with CIN

Determinants of Chronic Total Occlusion in Patients With Peripheral Arterial Occlusive Disease

Vuruskan, Ertan/0000-0001-6820-3582; duman, hakan/0000-0002-1441-7320; Buyuklu, Mutlu/0000-0002-4513-2483WOS: 000391460300009PubMed: 27059289Chronic total occlusion (CTO) is a common finding in 40% of the patients with peripheral arterial disease (PAD). the aim of this study was to investigate the determinants of CTO in patients with PAD. the study included a total of 211 nonanemic patients with PAD. All patients were categorized according to the Fontaine classification. in lower extremity angiography cohorts, CTO- patients were designated as group 1 and CTO+ patients were designated as group 2. Patients with CTO had significantly higher red cell distribution width (RDW), neutrophil-lymphocyte ratio, uric acid, and high-sensitivity C-reactive protein compared to patients without CTO (P .001, P = .036, P .001, and P = .015, respectively). Albumin, total bilirubin, and direct bilirubin were significantly lower in the patients with CTO compared to patients without CTO (P = .023, P .001, and P = .049, respectively). Multivariate logistic regression analysis showed that RDW, uric acid, and total bilirubin were independent predictors of CTO in patients with PAD. We demonstrated that increased RDW and uric acid levels and lower total bilirubin values were independently associated with CTO in patients with PAD