Association of Glomerular Filtration Rate and Carotid Intima-Media Thickness in Non-Diabetic Chronic Kidney Disease Patients over a 4-Year Follow-Up.

Patients with chronic kidney disease (CKD) have increased risk of cardiovascular events. However, the association of glomerular filtration rate (GFR) and carotid intima-media thickness (CIMT) in non-diabetic CKD patients is under-investigated. This prospective study was conducted at University Clinical Hospital Mostar over a 4-year period and enrolled a total of 100 patients with stage 2 and 4 CKD (50 patients per group). Stage 4 CKD group had significantly higher baseline CIMT values (1.13 ± 0.25 vs. 0.74 ± 0.03 mm, P < 0.001), and more atherosclerotic plaques at the study onset (13 (26%) vs. 0 (0%), P < 0.001) compared to stage 2 CKD. A statistically significant 4-year increase in GFR (coefficient of 2.51, 3.25, 2.71 and 1.50 for 1-year, 2-year, 3-year and 4-year follow-up, respectively, P < 0.05) with non-significant CIMT alterations has been observed in stage 2 CKD. Furthermore, linear mixed effects analysis revealed significant decrease in GFR (coefficient of -6.69, -5.12, -3.18 and -1.77 for 1-year, 2-year, 3-year and 4-year follow-up, respectively, P < 0.001) with increase in CIMT (coefficient of 0.20, 0.14, 0.07 and 0.03 for 1-year, 2-year, 3-year and 4-year follow-up, respectively, P < 0.001) in stage 4 CKD. GFR and CIMT showed significant negative correlation in both CKD groups during all follow-up phases (P < 0.001). Furthermore, multiple linear regression analysis revealed significant independent prediction of CIMT by baseline GFR (B = -0.85, P < 0.001), while there was no significant prediction of CIMT with other covariates. In conclusion, this study demonstrates significant association of GFR and CIMT in non-diabetic stage 2 and stage 4 CKD during the 4-year follow-up.

Body Composition and Inflammation in Hemodialysis Patients.

The volume state of dialysis patients is important in guiding the dialysis process. Volume overload in these patients is associated with inflammation. The objectives of the present study were to assess the body composition of patients on hemodialysis; to determine the concentrations of B-type natriuretic peptide (BNP) in plasma and evaluate the association of BNP concentrations with volume overload; to determine the concentrations of C-reactive protein (CRP), albumin and superoxide dismutase (SOD) activities as indicators of inflammatory or antioxidant processes. The study included 79 maintenance hemodialysis patients. Assessment of body compartments was carried out using a body composition monitor (BCM). After BCM measurements, blood samples were taken from the patients for laboratory tests. There were 40 (50.6%) volume-overloaded patients (relative overhydration >15%). These patients had a higher prevalence of arterial hypertension (P < 0.05), significantly higher concentrations of BNP (P = 0.01), lower body mass index (P < 0.05) and lower fat tissue index (P < 0.05). There was a positive correlation between plasma BNP and CRP concentrations (ρ = 0.231; P < 0.05), and a negative correlation between (log) BNP and albumin (r = -0.021; P < 0.05), as well as (log) CRP and albumin concentrations (r = -3; P < 0.01). SOD activity was positively correlated with albumin concentrations (r = 0.254; P < 0.05). The concentrations of BNP in this study were associated with volume overload and inflammatory markers. Patients with a higher albumin concentration had higher SOD activity.

Diagnostic value of MPO in patients admitted for suspected acute coronary syndrome--a study of adult in Mostar, Bosnia and Herzegovina.

We assessed the diagnostic efficacy of plasma Myeloperoxidasis (MPO) alone or in combination with cardiac troponin I (cTnI) for detecting ACS in patients presenting with chest pain initiating within 24 h before the hospital admission. In this prospective cohort study were included all respondents who have visited outpatient clinic of internal diseases, University Hospital Mostar because of chest pain and suspected acute coronary syndrome within 24 h of the onset of the period of 6 months and the total sample consisted of 114 patients. Troponin and myeloperoxidase were significantly positively correlated at the beginning of treatment, myeloperoxidase was significantly positively associated with adverse cardiovascular events during hospitalization and myocardial infarction (p < 0.05), with the regression analysis did not show a significant predictor in the development of myocardial infarction (p > 0.05). Sensitivity of myeloperoxidase as a valid test detection of myocardial infarction at baseline was 0.15 and specificity was 0.85, suggesting good diagnostic value usable in the clinical practice.

Impact of hemoglobin concentration on plasma B-type natriuretic peptide level and left ventricle echocardiographics characteristics in chronic kidney disease patients.

Anemia is common in patients with chronic kidney disease (CKD) and contributes to cardiovascular alterations. Recent findings suggest that B-type natriuretic peptide (BNP) is a sensitive biomarker for left ventricular dysfunction, but relationship between hemoglobin and BNP in CKD patients is unclear. Hemoglobin, plasma BNP and serum creatinine levels were measured in 49 patients with CKD (without heart failure), divided in two groups according to the hemoglobin status (cut-off point 110 g/L). All patients underwent echocardiography in order to assess left ventricular (LV) morphology and function. The results showed that in the group of patients with hemoglobin levels under 110 g/L BNP levels were significantly elevated (p < 0.001), as well as left ventricular mass index (p < 0.001). Systolic and diastolic LV function were significantly better in patients with hemoglobin levels above 110 g/L (p < 0.001). Hemoglobin levels were inversely related to BNP values (r = -0.451, p < 0.001). Significantly negative correlation between BNP level and creatinine clearance (p = 0.009), and significantly positive correlation between BNP level and left ventricular mass index (LVMI) were established. A similar but positive relationship was observed between hemoglobin levels and creatinine clearance (p < 0.01). We established statistically significant negative correlation between hemoglobin levels and LVMI (r = -0.564, p < 0.001). In conclusion, BNP and hemoglobin levels depend on the renal function. Anemia may contribute to elevated BNP levels in CKD patients, and may represent an important confounder of the relationship between BNP and cardiac alteration in these patients.

Medical and psychological parameters in overweight and obese persons seeking treatment.

The aim of the study was to analyse psychological characteristics and medical parameters in obese and overweight to identify the possible psychosocial consequences of obesity that may occur along with the numerous medical problems associated with excess body weight. Analysis was made on 296 patients (103 males and 193 females, median age 50, range 16-81) divided in three groups, depending on their Body mass index (BMI). Group I included 41 patients with BMI ranging from 25 to 29.9, group II included 170 patients with BMI from 30 to 34.9, and group III 85 patients with BM > or =35. We compared medical (glucose, cholesterol, triglycerides, HDL-cholesterol, systolic and diastolic blood pressure, body fat percentage) and psychological parameters (anxiety, depression, pros and cons of losing weight, self efficacy and four stages of change) in the patients included in the study. Univariate analysis has shown statistically significant difference among obese and overweight patients in goal weight, systolic and diastolic blood pressure, body fat percentage, glucose and cholesterol serum level. People with higher BMI (>30) found more advantages (pros) over disadvantages (cons) of weight loss but the level of anxiety and depression did not differ significantly among those 3 groups of patients. The results have shown that overweight and obese people have serious medical problems. They also differ in some psychological characteristics which have to be taken into consideration. Therefore, approach to these patients should be multidisciplinary, including dietary care, physical activity, psychological and medical care.

Erythropoietin in cardiorenal anemia syndrome.

Incidents of heart and renal failure (HF, RF) together, are increasing in our country and all over the world, so a great attention has been dedicated to this problem recently. These diseases together have shown bad results because of the process of accelerated arteriosclerosis, structural changes of myocardium, oxidative stress, inflammation, increased activities of sympathetic nervous system (SNS), increased activities of a renin-angiotensin-aldosterone system (RAAS) (1). These factors are crucial in the development of patho-physiological process and consequential development of anemia, that together with heart and renal failure through interaction, cause serious disorder that we call the cardio-renal anemia syndrome (2). We examined effects of erythropoietin (Epoetin beta) at 90 (60 men and 30 women) pre-dialysed and dialysed patients with HF signs during a period of three years in individual dozes of 2000-6000 units subcutaneous (sc) weekly. Using computer S PLUS and SAS multiple variant analysis we have got correlations by Pearson. Epoetin beta significantly develops anemia parameters: number of erythrocytes (r=0.51779; p<0.0001), hemoglobin (r=0.38811; p<0.0002), MCV (r=0.59876; p<0.0001) at patients with HF. Positive effects are seen at NYHA class (r=0.59906; p<0.0001), on quality of life before and after prescribing medicine. Parameters of renal functions are improving: more urea (r =0.45557; p<0.0001) than creatinine (r=0.26397; p<0.00119) and potassium values K(+)) are not changed significantly (r=0.02060; p<0.8471). Epoetin beta has been useful in treatment of pre-dialysed and dialysed patients with HF and anemia by improving functional ability of myocardium and quality of life.