Reactive products of oxygen are among the most potent and omnipresent threats faced by the living organism. Intracellular accumulation of reactive oxygen species such as superoxide anion, hydrogen peroxide, hydroxyl radical, and peroxy radical, can arise from toxic insults or normal metabolic processes. These species may perturb the cell's natural antioxidant defence systems, resulting in damage to all of the major classes of biological macromolecules, including nuclear acids, proteins, carbohydrates and lipids. Oxidative stress has been defined as a disturbance in the prooxidant-antioxidant balance, resulting in potential cell damage. It has been implicated in several biological and pathological processes like ageing, inflammation, carcinogenesis, ischemia-reperfusion and in diseases including diabetes mellitus, atherosclerosis, and/or neurodegenerative diseases

Diabetes is the most common cause of end-stage renal disease .in United States , Europa and Japan. Approximately 40% of patients with type 1 diabetes and 5-15% of patients with type 2 diabetes eventually develop end-stage renal disease. Risk factors for development of diabetic nephropathy include hyperglycemia, hypertension, positive family history of nephropathy and hypertension, and smoking. Key elements in the primary care of diabetes include glycemic control, blood pressure control, and screening for microalbuminuria. In general, the goal for glycemic control is a blood glucose level as close to normal (HbA C <7%) . Blood pressure control is at least as important as glucose control, especially after the onset of 1 renal damage, and blood pressure should be consistently <130/85. Screening for diabetic nephropathy involves monitoring at least yearly for urinary albumin excretion >30 mg per day. Microalbuminuria is defined as the urinary excretion of 30300 mg of albumin per day. Both glycemic control and rigorous control of blood pressure have significant impact on prevention and progression of diabetic nephropathy. Identification of patients with microalbuminuria selects a population of patients with increased mortality. Microalbuminuria screening should begin at the time of diagnosis. ACE inhibitors should be used when microalbuminuria is present regardless of the presence or absence of hypertension in type 1 diabetes and are widely.
used in normotensive patients with type 2 diabetes, as well.The effect of ACE inhibitors is probably not only via lowered
systemic blood pressure but also via direct effects on intraglomerular hemodynamics. 

Nowadays, hysterosalpingography and laparoscopy are routine methods of exploration of the oviduct passability.The tests were made at department of infertility at the Gynecology and Obstretics Institute of Clinical Center of Serbia in the period from 01.01. untill 31.12.1998. The three hundred patients, on which hysterosalpingography (HSG) was made, and patients, on which chromolaparoscopy was made, were involved by prospectus studies. The analysis shows, that between hysterosalpingographical and laparoscopical investigation of the passability of the oviducts there exists an extremely high statistical difference in the distributions of findings of particular modalities of the passability of the oviduct. Two-way passability of the oviducts with growths of tissue has been established in a higher percentage in the patients who were examined laparoscopically, while the other alternations have been diagnosed hysterographically i a higher percentage. A statistical processing of data resulted in a significantly high statistical difference in the patients with two-way occlusion of the oviducts, whereas for other modalities no statistically significant difference has been established. The most researchers describe high perccentages of growths of tissue, from 64,0% to 72,0%, which have not been established by HSG. Growths of tissue have been confirmed by this investigation in a high percentage (70,0%). Establishing the passability of the oviducts is particularly important for further treatment of the patients.

Pruritus is one of the commonest symptoms of dermatologic appearances in uraemic syndrome and it occurs in 90% of patients on dialysis with different etiology and pathophysiology. The aim of the study was to estimate the frequency of uraemic pruritus and the comparison with clinical and biochemical parameters in 124 patients treated by chronicle haemodialysis at Department of Haemodialysis, Urology and Nephrology Clinic, Clinical Center “Kragujevac”. The routine laboratory analyzes were carried out in examined patients and the concentration of parathyroid hormone was determined. The study was based on data from history of disease and  questionnaire carried out in all patients. Of 124 patients, 65,3% were male and 34,7% were female, mean age of 55,98±12,94 years; the mean time on HD was 55,5 ±50,4 months. 46,8% of examined patients had symptoms of uraemic pruritus. Uraemic syndrome and uraemic complications, manifested by the concentration of urea, 21,57±7,56 vs. 22,93±5,754; p=0,05 and time on dialysis, 67,27±60,07 vs. 43,64±36,84; p=0,02, are the significant parameters of uraemic pruritus. Serum concentration of iron 15,16±8,03 vs. 11,73±6,21; p=0,05 and UIBC 25,12±10,6 vs. 30,45±9,86; p=0,04, as well as hyperglycemia 6,16±2,516 vs. 6,82±2,872; p=0,02 are significantly correlated with uraemic pruritus. There was a statistically significant difference in albumin concentration 35,84±9,09 vs. 37,72± 3,105; p=0,05 but our results were reverse to the data in literature where the reported albumin level was higher in patients with uraemic pruritus. 27,6% of examined patients had itching of all the body what is in correlation with literature. Between the patients with localized itching and patients with generalized itching, there are statistical significance in following: number of erythrocytes 2,4±0,96 vs. 2,7±0,6; p=0,02, concentration of hemoglobin 78,53±31,44 vs. 89,36±19,81; p=0,05, hematocrit 0,23±0,089 vs. 0,26±0,057; p=0,02 and TIBC 29,45±12,01 vs. 34±4,86; p=0,02, as well as concentration of glycemia 5,38±2,52 vs. 6,42±2,12; p=0,01.

Gonarthrosis is the most frequent artropathy of knee.The second joint of frequency and localisation osteorthrosis after joint of haunch. In complexive therapy of gonarthrosis, exept the medical therapy, important place has physical therapy
or special laser-therapy. 78 patients, where tested with a primary and secondary gonarthrosis, 19 men, and 59 women. They were all hospitalised on Rheumatology department of Internal Clinic of Clinical and Hospital Centre in Pri{tina. By objective using of parameters we show that, laser is a very important modern expedient on clinical results for gonarthrosis (volume of joint, volume of movements, muscle strength, and on the first pain, pain in static positions, pain in moving and night pain). It is seen that all values got by laserotherapy are statistically high significiant. During the use, of laserotherapy, the medical therapy was included.

Natural system of disease genesis is a complex occurrence. «Net» review of cause can be based on systematic approach and it doesn't have to, and so those are homonyms. Complex occurrence of the genesis of a disease is given as a arranged set by relation «predecessor-follower». Chain reaction is that one which has hierarchic arrangement because of managing. By systematic approach the causality is being created.

Change in left ventricular volumes, particularly end-systolic volume index is a major representative of left ventri cular dilatation, and is a predictor of mortality after acute myocardial infarction of anterior localization. Several large-scale trials have demonstrated beneficial effectiveness of ACE inhibitors on the process of left ventricular remodeling after myo cardial infarction, not only in patients with compromised systolic function. Aim of the study was to evaluate the influence of therapy for ACE inhibitors in the early faze of anterior myocardial infarction, trough dynamics of left ventricular volume in dexes. During six months 30 patients were evaluated with echocardiography in admission, before leaving the hospital, after
three and six months after myocardial infarction. In evaluated group there was increased end-diastolic and end-systolic vo lume index, but without statistically significant value. There were no new cardiac decompensations. We concluded that ACE inhibitors given in the early stage of acute myocardial infarction anterior localization have beneficial effect on the process of left ventricular remodeling and that is recommended to bee given to this patients, after excluded contraindications

Biliary calculosis is the most frequent disease of the hepathrombial system. Inflammation of the gall bladder appears in the acute and chronicle form. Acute inflammation presents one of the frequent complications of the gall bladder
calculosis. Acute inflammation of the gall bladder can appear in catarrhal, phlegmonous, gangrenous perforative form. Perforation of the inflamed changed gall bladder can lead to the diffuse biliary peritonitis, pericholecystitis and formation of
pericholecystitis infiltrate or abcess. Very often the acute inflammation of the gall bladder appears in combination with Acute inflammation of the pancreas. For the production of the work the biyearly material of the Emergency Surgical Centre
“Simonida” in Gračanica is used. In the ESC Simonida, in the period from January to December of 2004, 375 patients were operated. In the same period of time we operated 52 (13.86%) patients because of the gall bladder disease and biliary ways.
There were 45 female patients and 7 male ones. Gall bladder disease is 6.5 times more frequent at females in our material. Hard security situation and limited freedom of movement are one of the most important reasons of patients' late report to the
doctor, and appearance of the heavy forms of the inflammation of the gall bladder and biliary ways. The acute form of the inflammation of the gall bladder was noticed at 25 patients. The complications of the disease in the sense of cholecystopancreatitis, choledolithiasis, suppurating cholangiitis, choledolithiasis i cholecystoduodenal fistule were found at 27 patients. Postoperative complications were verified at 3 patients, wound infection at 2 patients and peritonitis at one
patient after drawing ouf the T-drain.

Defined daily dose (DDD) is arbitrary chosen technical unit for measuring medicament usage and it is not a recommended therapeutic dose. It is in fact a statistical parameter for monitoring medicaments usage, and it is related to the
dose which is usually prescribed for the indication that the medicament was registered for. The aim of this work is to perform a detailed analysis of the extent and structure of the region of South Backa. According to the obteined data, medicaments
used in treatment of gastroinestinal tract contributed with 15.52 DDD/1000 inhabitants per day. Most commonly used are antacids and anti-ulcer drugs (8.14 DDD/1000 inhabitants per day). Medicaments used in treatment of muscular and skeletal
system contributed with 14.30 DDD/1000 inhabitants per day. Antiinflammatory and antirheumatic drugs sre used in amounts of 14.18 DDD/1000 inhabitants per day. In our country there is no complex survey of drug usage because there is no way of monitor ing which could apprehend all possible information sources. Defined daily dose is not introduced into practical qualitative and quantitative monitoring. It is necessary to make systematic network of information sources to provide for insight into medicament usage

The retrospective study included all patients treated at Clinical Centre in Kragujevac, who needed an acute HD treatment due to vital endangerment, during 2003. The objective of this study was to demonstrate our experiences in treating these patients using central venous catheter. The results of this study show that femoral catheters are dominant (over 95%), with slight using of jugular and subclavial catheters (5%), in spite of the recommendation of the American Association for Renal Diseases to use femoral catheters only for patients supposed to be in hospital during the interval of 5 days. The
frequency of infections in our study (16,6%), coincides with the data of the American Association for Nosocomial Infections (NNIS)[1] (17,8% catheter infections). Gram-positive bacterium from Staphylococci group are the most frequent cause of catheter infections also in our patients