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Publikacije (45999)

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A. Arapović, Zana Karkin

When identical commodities are being exchanged between two or more markets, the prices of those commodities should be equal according to the law of one price, with the only difference in the transport cost between those markets. Therefore, in the perfectly integrated economy, local demand has no impact onto the formation of the market price, and once changes in local demand occur, the prices are being equalized in the national market through efficient allocation of resources (Pareto efficiency). Quantity supplied is being adjusted by shifting goods towards the markets with higher demand. This represents “the first fundamental theorem of welfare economics”, which is confirmation of Adam Smith's "invisible hand". The concept is further expanded first by Stigler, explaining the relevance of market information for the purpose of increasing market efficiency. When there is lacking significant market information, agents in the market cannot engage in optimal arbitrage and the price dispersion is present, so therefore markets are not efficient (Stigler, 1961). We put this theory into perspective of the particular setting in B&H. We analysethe extent of agro-food market integration in B&H by studying price differentials between different market locations to answer whether the introduction of ICT service improved market efficiency, thereby potentially revealing that actors in the market did not actually have access to relevant price information.

Objectives: Aim of the present study was to investigate serum concentration of leptin and its association with values of body mass index (BMI), C-reactive protein (CRP), and erythrocyte sedimentation rate (ESR) in hemodialysis (HD) patients. Methods: This cross-sectional study included 60 HD patients (34 male, 26 female) and 30 age- and sex-matched (4 males, 26 females) apparently healthy subjects. Serum leptin concentration was determined by an enzyme-linked immunosorbent assay (ELISA). Serum CRP concentration was measured by means of particle-enhanced immunonephelometry. ESR value was determined by Western Green method. BMI was calculated as weight (kg) divided by height squared (m2). Results: Results have shown that median serum leptin concentration (30.65 ng/mL; 12.48-86.40 ng/mL) was statistically significantly higher in HD patients compared to median serum leptin concentration (15.75 ng/mL; 9.15-30.65 ng/mL) in the control group of healthy subjects (p<0.05). Likewise, median serum CRP concentration (5.5 mg/L; 1.93-8.9 mg/L) and median ESR value (57.5 mm/h; 40.5-77.0 mm/h) were significantly higher in HD patients compared to median serum CRP concentration (0.8 mg/L; 0.38-1.43 mg/L) (p<0.001) and median ESR value (10.0 mm/h; 6.5-14.0 mm/h) (p<0.001) determined in the control group. Statistically significant positive correlation was found between BMI values and serum leptin concentration in HD patients (rho=0.434; p<0.001). Positive, although not significant, correlation was observed between serum CRP and leptin levels in HD patients (rho=0.171; p>0.05). Negative correlation between ESR values and serum leptin concentrations in HD patients was determined but it was not statistically significant (rho= -0.029; p>0.05). Conclusions: Increased serum concentration of leptin as pro-inflammatory cytokine as well as elevated serum values of CRP and ESR indicate presence of systemic micro inflammation in HD patients. Results of the present study point to possible use of serum leptin concentration as an indicator of nutritional status in HD patients based on observed significant positive correlation between serum leptin concentrations and BMI values. However, absence of significant association between serum leptin and CRP levels as well as between serum leptin concentrations and ESR values in HD patients requires further investigation and clarification.

Introduction: Psoriasis is a chronic skin ailment which can be connected with an increased occurrence of other illnesses, including the metabolic syndrome. Examinees and methods: A prospective study has been conducted which included 70 patients affected by psoriasis, both genders, older than 18 years. Average age being 47,14 (SD=±15,41) years, from that there were 36 men or 51,43 and 34 women or 48,57%. The average duration of psoriasis was 15,52 (SD= ±12,54) years. For purposes of diagnosing the metabolic syndrome, the criteria of National Cholesterol Education Program Adult Treatment Panel III, (NCEP ATP III) were used. For purposes of detecting the severity and spread of psoriasis, Psoriasis Area and Severity Index (PASI) was used. Results: The incidence of metabolic syndrome in patients with psoriasis was 38,57%. Average values of PASI score were 16,65. The increase in values of PASI score and metabolic syndrome were statistically highly connected. (r=0,3, p=0,0001). Conclusion: Psoriasis is connected with metabolic syndrome, there is a positive correlation between the severity of psoriasis and frequency of metabolic syndrome.

E. Hamzić, B. Bed’hom, H. Juin, R. Hawken, M. Abrahamsen, J. Elsen, B. Servin, M. Pinard-van der Laan et al.

Abstract Intelligent Transport Systems (ITS) fall in the framework of cyberphysical systems due to the interaction between physical systems (vehicles) and distributed information acquisition and dissemination infrastructure. With the accelerated development of wireless Vehicle-to-Vehicle (V2V) and Vehicle-to Infrastructure (V2I) communications, the integrated acquiring and processing of information is becoming feasible at an increasingly large scale. Accurate prediction of the traffic information in real time, such as the speed, flow, density has important applications in many areas of Intelligent Transport systems. It is a challenging problem due to the dynamic changes of the traffic states caused by many uncertain factors along a travelling route. In this paper we present a V2V based Speed Profile Prediction approach (V2VSPP) that was developed using neural network learning to predict the speed of selected agents based on the received signal strength values of communications between pairs of vehicles. The V2VSPP was trained and evaluated by using traffic data provided by the Australian Centre for Field Robotics. It contains vehicle state information, vehicle-to-vehicle communications and road maps with high temporal resolution for large numbers of interacting vehicles over a long time period. The experimental results show that the proposed approach (V2VSPP) has the capability of providing accurate predictions of speed profiles in multi-vehicle trajectories setup.

Introduction: Based on the statistics the population in Bosnia and Herzegovina is getting older. In 2013 the average life span for women was 73.6 years and 68.1 for men. The chronic hemodialysis program is mainly reserved for elderly patients with high mortality risk. The most common cause of hemodialysis mortality relates to cardiovascular diseases (60.2%), regardless of frequent innovations and improvement of hemodialysis procedures. The aim of the study: was to determine the mortality rate by age groups with comments on the presence of non-traditional predictors (anemia, hypoalbuminemia, CRP, vascular access and PTH) in dialysis patients in the follow-up period of 36 months. Methods: The study included all patients undergoing chronic hemodialysis treatment at the Clinic of Hemodialysis of the Clinical Center University of Sarajevo (CCUS). Results: Out of a total number of hemodialysis patients (n=232), the specific mortality rate in patients under 65 years of age was 16.8%, and 50.5% in patients over 65 years of age. According to the age groups the mortality rate in elderly patients is as follows: from 65 to 74 years (45.1%), from 75 to 84 years (55.0%), over ≥85 years (75.0%). The most frequent vascular access in patients under and above 65 is arteriovenous fistula (79.6% and 62.1 %), temporary hemodialysis catheter (11.7% and 43.8 %) and long-term hemodialysis catheter (8.8% and 4.2 %). In the age group under 65 years of age the temporary hemodialysis catheter is significantly and more frequently used in diseased patients in respect to survivors (34.8% vs. 7.0%) [χ2(2)=15.769, p=0.001]. Diseased patients from the age group over 65 had a significantly lower mean value of haemoglobin in blood (M=100.9±17.5 g/L) in respect to survivors (M=109.2±17.1)[t(93)=2.339; p=0.021], lower mean value of albumin in blood (Me=32.0; IQR=29.0 do 35.0) in respect to survivors (Me=34.0; IQR=32.0 to 38.0) [U=762.5; p=0.006], and higher mean value of CRP in blood (Me=19.3 mg/L; IQR=6.6 to 52.0) in respect to survivors (Me=7.8; IQR=4.0 to 16.7) [U=773.5; p=0.008]. Diseased patients belonging to the age group over 65 had lower mean value of PTH, but without statistical significance (p>0.05). Conclusion: older age, temporary vascular access, anaemia and hypoalbuminemia are strong predictors of mortality in hemodialysis patients. Old age does not present contraindication for hemodialysis treatment, and treatment of terminal renal illness should not be abandoned.

Complex regional pain syndrome (CRPS), once known as reflex sympathetic dystrophy, Sudeck's dystrophy and causalgia, is a pain syndrome with indistinctive pathophysiology and unpredictable clinical course. CRPS can develop after a limb fracture, injury or damage to the peripheral or central nervous system. The diagnosis of CRPS is based on the signs and symptoms obtained from the medical history and physical examination. The disease is often resistant to treatment, and its course is not always favorable. A brief overview of this clinical entity is presented, and most relevant and up-to-date information is discussed.

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