32 results on '"Snezana Vujosevic"'
Search Results
2. Triple-diode solar cell current optimization – An analytical solution based on the Lambert W function
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Martin Calasan, Snezana Vujosevic, Mihailo Micev, Mohammed Alruwaili, and Andika Aji Wijaya
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Optimization ,solar cell ,triple diode model ,analytical solution ,Lambert W function ,parameter estimation ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
A novel mathematical modeling approach for the Triple-Diode Model (TDM) and its parameter estimation is introduced in this paper. For the first time in the literature, this paper presents two analytical solutions for calculating the current in TDM solar cells using the Lambert W function. Additionally, a new metaheuristic algorithm, the Adaptive Evaporation Rate Water Cycle Algorithm (Adaptive ERWCA), is proposed for estimating TDM solar cell parameters. The proposed algorithm is tested using both the new analytical solutions and a well-known iterative approach for the current-voltage characteristics of the TDM solar cells model. Extensive testing is conducted on three well-known solar cells/modules and a panel under various weather conditions. The results demonstrate that the proposed analytical expressions for the current-voltage characteristics are accurate and highly effective for representing TDM solar cell current. The accuracy of the parameter estimates obtained with the application of the proposed algorithm, considering both analytical solutions and the iterative approach, is compared with existing literature results. It is shown that the proposed algorithm outperforms existing algorithms in solar cell parameter estimation across both the analytical and iterative approaches for current-voltage characteristics. Remarkably, for the RTC France solar cell, the SOLAREX MSX 60 solar module, and the PHOTOWATT-PWP 201 solar module, the obtained Root Mean Square Errors (RMSE) are 0.00075141, 0.01157153, and 0.0010578, respectively. These results are currently the best reported in the literature.
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- 2024
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3. Corrigendum to 'Triple-diode solar cell current optimization – An analytical solution based on the Lambert W function' [Alex. Eng. J ., 104, (2024) pp. 95–114, AEJ_5045]
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Martin Calasan, Snezana Vujosevic, Mihailo Micev, Mohammed Alruwaili, and Andika Aji Wijaya
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Engineering (General). Civil engineering (General) ,TA1-2040 - Published
- 2024
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4. Accurate modeling and parameters estimation of photovoltaic models: Analytical and artificial intelligence solutions
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Martin Ćalasan, Snežana Vujošević, Mihailo Micev, Shady H.E. Abdel Aleem, and Hany M. Hasanien
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Accurate modeling ,Equivalent circuits ,Lambert functions ,Optimization methods ,Photovoltaic ,Technology - Abstract
The single-diode model is a widely used framework for simulating solar cell behavior. It consists of a diode, a current source, and two resistors to replicate real-world performance. This work introduces three alternative single-diode equivalent circuits with five parameters each. The current-voltage relationships of these equivalent circuits are derived using the Lambert W function, and a closed-form analytical solution is presented using Special Trans Function Theory (STFT). Additionally, the paper introduces a chaotic variant of the Gorilla Troops Optimizer (GTO), referred to as CGTO, for parameter estimation. The effectiveness of the proposed alternative single-diode models and the CGTO algorithm was validated by comparing their accuracy, using root mean square error (RMSE) metrics, against traditional models across various solar cells and conditions (different values of irradiance and temperature). The analysis confirmed that the alternative configurations could achieve comparable precision in modeling solar cell characteristics under different conditions, challenging the exclusivity of the standard single-diode model's configuration. This indicates that various single-diode solar cell models can effectively represent the current-voltage behavior of solar cells. Furthermore, the configuration of elements in the classic SDM equivalent circuit is not definitive or the most precise. This opens the door for the creation of more sophisticated models of solar cells with diverse element configurations.
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- 2024
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5. Painful fat necrosis as a consequence of insulin application - an unsolvable problem?
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Sanja Borozan, Emir Muzurovic, and Snezana Vujosevic
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- 2022
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6. Two types of thyroid cancer in one patient
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Emir Muzurovic, Sanja Borozan, and Snezana Vujosevic
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- 2022
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7. Gaucher disease in Montenegro - genotype/phenotype correlations: Five cases report
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Jun Liu, Nikola Bakic, Pramod K. Mistry, Ruhua Yang, Sanja Medenica, Snezana Vujosevic, Vesko Vujicic, and Milena Dapcevic
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Glucocerebrosidase ,medicine.medical_specialty ,Abdominal pain ,Lysosomal storage disorder ,Genotype ,Gaucher disease ,Gene mutation ,Asymptomatic ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Case report ,medicine ,Bone pain ,business.industry ,General Medicine ,Enzyme replacement therapy ,GBA gene sequencing ,medicine.disease ,Osteopenia ,030220 oncology & carcinogenesis ,030211 gastroenterology & hepatology ,medicine.symptom ,business - Abstract
Background The most common lysosomal storage disorder is Gaucher disease (GD). It is a deficiency of lysosomal glucocerebrosidase (GBA) due to biallelic mutations in the GBA gene, characterized by the deposition of glucocerebroside in macrophage-monocyte system cells. The report targets clinical phenotypes of GD in order to correlate them with GBA gene mutations, as well as to identify GBA gene mutation in patients in Montenegro that are diagnosed with GD. Cases summary Five patients (4 male, 1 female) of type 1 GD (GD1) are reported. The age at diagnosis ranged from 7 to 40. Patients experienced delays of 1-12 years in diagnosis after the original onset of symptoms. The most common mode of presentation was a variable degree of splenomegaly and thrombocytopenia, while other symptoms included bone pain, hepatomegaly, abdominal pain and fatigue. Osteopenia was present in a majority of the patients: 4/5. All patients were found to have an asymptomatic Erlenmeyer flask deformity of the distal femur. On enzyme replacement therapy (ERT), the hematological and visceral parameters showed significant improvement, but no significant progression in bone mineral density was noticed. GBA gene sequencing revealed homozygosity for the N370S mutation in one patient. The genotypes of the other patients were N370S/55bp deletion, N370S/D409H (2 patients), and H255Q/N370S (1 patient). Conclusion The phenotypes of the GD1 encountered in Montenegro were severe but all responded well to ERT.
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- 2019
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8. Corticosteroids 70 years of balancing between good and bad
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Snezana Vujosevic and Sanja Borozan
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- 2021
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9. Follicular fluid progesterone in thyroid autoantibodies positive women and assisted reproductive technology outcome
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Milos Zarkovic, Biljana Medjo, Sanja Medenica, Rade Vukovic, Snezana Vujosevic, Dzihan Abazovic, Biljana Arsic, Eliana Garalejic, and Jovic Dragana Bojovic
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Assisted reproductive technology ,business.industry ,medicine.medical_treatment ,medicine ,Physiology ,business ,Follicular fluid ,Anti-thyroid autoantibodies - Published
- 2020
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10. Primary leiomyosarcoma of the thyroid gland with prior malignancy and radiotherapy: A case report and review of literature
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Milan Bogojevic, Aleksandar Filipovic, Djordjije Krnjevic, Duško Dunđerović, Ljiljana Vuckovic, Jelena Sopta, and Snezana Vujosevic
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Leiomyosarcoma ,endocrine system ,medicine.medical_specialty ,endocrine system diseases ,medicine.medical_treatment ,Smooth muscle tumor ,Malignancy ,03 medical and health sciences ,0302 clinical medicine ,stomatognathic system ,Case report ,medicine ,Thyroid ,Radiotherapy ,business.industry ,Thyroidectomy ,General Medicine ,medicine.disease ,3. Good health ,body regions ,Radiation therapy ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Primary Leiomyosarcoma ,Smooth Muscle Tumor ,030211 gastroenterology & hepatology ,Radiology ,business - Abstract
BACKGROUND Leiomyosarcoma (LMS) of the thyroid gland is a rarely presented tumor that offers poor prognosis. To the best of the authors’ knowledge, there currently exist only 28 known cases described in the literature (limited to English). CASE SUMMARY Herein a case is reported of a 60-year-old female patient who had an LMS of the thyroid, which was accompanied by periodic dysphonia and breathing disorder as well as the feeling of pressure in the chest and neck. At the time the disease was diagnosed, no metastases were detected. Prior to the diagnosis, the patient experienced a uterine adenocarcinoma that had been treated by surgical procedure and radiotherapy. For the LMS, a total thyroidectomy was performed, followed by radiotherapy. Since metastases were also discovered in the lungs, sternum, and femur, chemotherapy was administered as well. Immunohistochemically, the tumor cells in the thyroid indicated positively for alpha smooth muscle actin, calponin, and H-caldesmon, but were negative for CD34, p63, estrogen receptor, progesterone receptor, and Epstein-Barr virus. CONCLUSION Although the etiology of the LMS is as of yet unknown, prior malignancy and radiation should be considered as risk factors.
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- 2019
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11. Cardiovascular diabetic autonomic neuropathy as a risk factor for electrical complications in acute myocardial ischemia
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Natasa Belada, Sanja Medenica, Nemanja Radojevic, Valentina Kalinic, Snezana Vujosevic, Nevena Mijajlovic, and Sanja Borozan
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Diabetic Autonomic Neuropathy ,medicine.medical_specialty ,Myocardial ischemia ,business.industry ,admission glucose profile ,lcsh:R ,lcsh:Medicine ,General Medicine ,myocardial ischemia ,Internal medicine ,diabetes mellitus ,medicine ,Cardiology ,Risk factor ,business ,cardiovascular autonomic neuropathy - Abstract
Introduction/Objective. Cardiovascular diabetic autonomic neuropathy (CDAN) mainly affects heart rhythm through sympathovagal imbalance. The objective of the study is to determine CDAN risk potential regarding electrical complications of acute myocardial ischemia (AMI), including admission glucose profile levels (AGP). Methods. Seventy-six patients suffering from type 2 diabetes mellitus were divided into two age-matched groups related to the presence of CDAN, and the influence of AGP on electrical complications was estimated. Ewing?s tests were used for diagnosis of CDAN. Results. Patients without CDAN have 42.86% risk for developing electrical complication into early post-AMI period. If it is a pre-existing condition, the risk is 63.64%, which is obvious, but not statistically significant. Considering the AGP, levels above 12.25 mmol/L as predictive for post-AMI electrical complications, in CDAN-positive patients with AGP levels above that cut-off value, the risk for electrical complications is raising up to 73.68%. The patients with CDAN who have AGP levels above the cut-off value have statistically higher risk for development electrical complications than those with lower levels (Z = 2.58, p < 0.01). On the other side, those without CDAN and with level of AGP lower than 12.25 mmol/L, the risk for electrical complications developing is as low as 23.08%. Conclusion. CDAN may be an important independent risk factor for electrical complications in postmyocardial ischemia period.
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- 2019
12. Hybrid walrus optimization algorithm techniques for optimized parameter estimation in single, double, and triple diode solar cell models
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Snežana Vujošević, Martin Ćalasan, and Mihailo Micev
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Physics ,QC1-999 - Abstract
Among all renewable energy sources, solar energy holds the greatest potential for electricity production. This transformation from solar to electrical energy is facilitated by solar cells, typically modeled using single-diode, double-diode, and triple-diode representations. In this study, we evaluate the effectiveness of the Walrus Optimization Algorithm (WOA) for estimating the parameters of these models. Furthermore, we introduce three innovative hybrid variants of WOA that incorporate chaotic sequences, adaptive modifications, and integration with the Simulated Annealing (SA) algorithm, thereby enhancing the parameter estimation process. Our research was conducted on two well-documented types of solar cells/modules, with additional tests on the performance of these algorithms on a solar panel under varying insolation and temperature conditions. The results underscore the superior efficiency, accuracy, and practicality of the hybrid algorithms, particularly the variant augmented with chaotic sequences, over traditional parameter estimation methods in solar cell technologies. This paper highlights significant advancements in algorithmic approaches, paving the way for more precise and reliable solar energy technologies.
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- 2024
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13. Zero-Sequence Voltage-based Method for Determination and Classification of Unloaded Overhead Line Operating Conditions at the Moment of Energization
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Saša Mujović, Luka Vujosevic, and Snezana Vujosevic
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Sequence ,Computer science ,Matlab simulink ,020209 energy ,Mechanical Engineering ,020208 electrical & electronic engineering ,Energy Engineering and Power Technology ,02 engineering and technology ,Fault (power engineering) ,Zero (linguistics) ,Moment (mathematics) ,Control theory ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,Line (text file) ,Overhead line ,Voltage - Abstract
Overhead line energization can be performed under normal or faulty conditions. The latter indicates an occurrence of a fault along the line that exists at the moment of energization. This can lead to significant over-voltages that could endanger proper line operation. The issue gets more complex to protective devices when it comes to high-resistance faults, which impair the ability of relays to react promptly and accurately. Consequently, installation of additional detection devices becomes necessary. This paper proposes a novel method that properly detects and classifies line operating conditions at the moment of energization. The method is designed to be useful for utilities and it can be considered as a low-cost, fast, and accurate detection and classification approach, suitable for dealing with both low-resistance and high-resistance faults. Through comprehensive mathematical modeling it was found that both normal and faulty conditions during line energization are accompanied by the zero-seque...
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- 2018
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14. Calciuria in children with primary mono-symptomatic nocturnal enuresis
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Bilsana Mulic, Mersudin Mulic, Suada Muminovic, Mersiha Mulic, Snezana Vujosevic, and Amira Peco-Anti
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lcsh:R5-920 ,Pediatrics ,medicine.medical_specialty ,business.industry ,Idiopathic hypercalciuria ,Nocturnal ,collection of 24h urine ,3. Good health ,idiopathic hypercalciuria ,Enuresis ,enuresis ,Medicine ,medicine.symptom ,lcsh:Medicine (General) ,business - Abstract
Introduction: The prevalence of idiopathic hypercalciuria (IH) in healthy pediatric population ranges from 3.0% to 7.0%. There is insufficient data about IH in children with mono-symptomatic enuresis. The aim of this study was to examine calcium excretion in urine (UCa) in patients with primary mono-symptomatic nocturnal enuresis (PMNE). Methods: In patients with PMNE, aged 5 to 17 years, IH was determined in 24-h urine and from second morning spot urine. The completeness of the 24-h urine collections was estimated via measuring 24h-urine creatinine excretion (UCr) of 0.1-0.2 mmol/kg/24h. Results: Sixty patients with PMNE, 32 males and 28 girls, median age of 9 years were enrolled in the study. Only 41.7% patients successfully completed 24 h urine collection. IH, defined as 24-h UCa > 0.1 mmol/kg body weight, was diagnosed in 12% of the patients, while when defined as UCa/UCr > 0.8 mmol/mmol in children 5-7 years and > 0.6 mmol/mmol in those > 7 years, IH was 8.3% and 6.7% from 24hurine and spot urine, respectively. Conclusion: Children and adolescents with PMNE are in risk of hypercalciuria. Therefore, it is useful to examine 24 hours of urine calcium excretion in these patients.
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- 2018
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15. The importance of anthropometric paremeters in patients with subclinical hypothyroidism
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Suada Muminovic, Mersudin Mulic, Mersiha Mulic, Snezana Vujosevic, and Fadil Skrijelj
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2. Zero hunger ,lcsh:R5-920 ,endocrine system ,Pediatrics ,medicine.medical_specialty ,endocrine system diseases ,business.industry ,030204 cardiovascular system & hematology ,Anthropometry ,subclinical hypothyroidism ,Anthropometric parameters ,03 medical and health sciences ,0302 clinical medicine ,Medicine ,In patient ,030212 general & internal medicine ,lcsh:Medicine (General) ,business ,cardiometaolic risk ,hormones, hormone substitutes, and hormone antagonists ,anthropometric parameters ,Subclinical infection - Abstract
Introduction: The concept of subclinical thyroid disease appeared in the 1980s when sensitive procedures for the measurement of the thyroid-stimulating hormone in the serum were introduced. Subclinical hypothyroidism is defined by the finding of elevated serum TSH concentrations with normal thyroid hormone levels. The incidence of subclinical hypothyroidism with increased cardiovascular risk has not yet been fully clarified. The aim of the study was to identify anthropometric parameters that may indicate an increased cardiometabolic risk in patients with subclinical hypothyroidism. Method: The study will include 140 patients aged 18-65, with 105 patients with subclinical hypothyroidism and a control group of 35 healthy, normally nourished subjects without subclinical hypothyroidism. A program of research will be carried out in all patients and it will include: detailed anamnesis and physical examination, anthropometric measurements (weight measurements, body height, waist circumference, hip circumference, body weight mass measurement by the bioelectrical impedance analysis method (%BFP), calculation of: body mass index (BMI), waist-to-hip circumference ratio (WC/HC), waist-to-height ratio (WC/Ht) and laboratory testing (FT3, FT4, TSH). Results: Examinees with subclinical hypothyroidism had statistically significantly elevated mean TSH values (6.87 + 1.34 mIU/ml) compared to TSH euthyroid examinees (1.9 + .88 mIU/ml). The mean age of subjects with subclinical hypothyroidism was 44.15 ± 11.23 years (MA = 43 years), and in subjects without subclinical hypothyroidism, 33.80 ± 10.60 years (MA = 33 years). In relation to the control group (euthyroid patients), patients with subclinical form of hypothyroidism had higher average mean values and statistically significantly higher incidence of elevated values: BMI (T test = 7.465, p < 0.0001; 2 = 35.977, p < 0.0001), %BFP (T test = 8.594, p < 0.0001; 2 = 44.956, p < 0.0001), WC (T test = 6.262, p < 0.0001; 2 = 48.865, p < 0.0001), and WC/Ht ratio (T test = 7.372, p < 0.0001; 2 = 39.175, p < 0.0001). The WC/HC ratio in the group with subclinical hypothyroidism was higher than in the group without subclinical hypothyroidism, but not statistically significant (T test = -0.946, p = ns; 2 = 0.622, p = 0). Conclusion: In the subclinical form of hypothyroidism, changes in the degree of nutrition and body weight can already be recorded, which, among other things, contributes to the development of increased cardiometabolic risk.
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- 2018
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16. Increased Serum Level of IGF-1 Correlates With Better Cognitive Status in End-Stage Renal Disease Patients Undergoing Hemodialysis
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Snezana Vujosevic, Najdana Gligorovic‐Bahranovic, Nikolina Bašić-Jukić, Vladimir Prelevic, Mirjana Nedovic-Vukovic, Branka Gledovic, Danilo Radunovic, Marina Ratkovic, and Tanja Antunovic
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medicine.medical_specialty ,education.field_of_study ,business.industry ,medicine.medical_treatment ,Population ,030232 urology & nephrology ,Parathyroid hormone ,Cognition ,Hematology ,030204 cardiovascular system & hematology ,End stage renal disease ,03 medical and health sciences ,0302 clinical medicine ,Nephrology ,Internal medicine ,Post-hoc analysis ,medicine ,Biomarker (medicine) ,Cognitive status ,Hemodialysis ,education ,business - Abstract
Prevalence of cognitive function decline in end stage renal disease (ESRD) patients undergoing hemodialysis is higher than in the general population. We analyzed risk factors for cognitive function decline in those patients. This study included 93 ESRD patients undergoing hemodialysis two or three times a week in three centers for hemodialysis in Montenegro. The cognitive status of patients was assessed using the mini mental score examination (MMSE) test. All 93 patients have been divided into three groups according to the results of MMSE. Patients in the first group had severe cognitive impairment and MMSE score below 17 (26.88%), patients in the second group with MMSE score 18-23 had moderate cognitive impairment (40.86%) and third group of patients have MMSE >24 and no cognitive impairment (32.26%). There were no significant differences between groups for gender, smoking habits and level of parathyroid hormone. Level of schooling was significantly different between groups of patients (P
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- 2017
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17. The impact of vitamin D supplementation on HOMA IR and ovulation in patients with polycystic ovarian syndrome
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Snezana Vujosevic and Emir Muzurovic
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medicine.medical_specialty ,Endocrinology ,Vitamin d supplementation ,business.industry ,media_common.quotation_subject ,Internal medicine ,Medicine ,In patient ,business ,Ovulation ,media_common - Published
- 2019
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18. Comparison of effects of metformin used as a monotherapy or in combination with gliclazide MR on glycemic control and lipid profile in patients with type 2 diabetes mellitus
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Olivera Boskovic, Snezana Radovanic, Elzana Cikic, Violeta Vukicevic, Sreten Kavaric, Djordjije Krnjevic, Sanja Borozan, Emir Muzurovic, Rada Sparavalo, Enisa Pupovic, Snezana Vujosevic, Igor Bjeladinovic, and Suzana Ivanovic
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medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Type 2 Diabetes Mellitus ,Gastroenterology ,Metformin ,Internal medicine ,medicine ,Gliclazide ,In patient ,business ,Lipid profile ,medicine.drug ,Glycemic - Published
- 2019
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19. Idiopathic short stature in a female patient
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Sanja Borozan, Snezana Vujosevic, Mira Samardzic, and Djordjije Krnjevic
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Pediatrics ,medicine.medical_specialty ,business.industry ,Female patient ,medicine ,medicine.disease ,business ,Idiopathic short stature - Published
- 2019
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20. Gaucherova bolest i kostane manifestacije
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Sanja Medenica, Olga Nedeljkovic-Arsenovic, Snezana Vujosevic, and Vesko Vujicic
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General Medicine - Abstract
Gaucherova bolest (GB) je redak autozomno recesivni nasledni poremecaj nastao kao defekt u sintezi enzima glukocerebrozidaze (GBA), sto uzrokuje manjak ili potpuni nedostatak aktivnosti tog enzima. Glavna karakteristika bolesti je nakupljanje glikosfingolipida glukozilceramida (GL-1) i glikozilsfingozina (LysoGL-1) u lizozomima mononuklearnih fagocita, a mutacije u GBA genu manifestuju se razlicitom klinickom prezentacijom. Kostane manifestacije u klinickoj prezentaciji pacijenata sa GB su ceste kod tipa I i III GB, a javljaju se u vise oblika kao: deformiteti, kostani infarkt, avaskularna nekroza, osteoskleroza i frakture nastale kao posledica osteopenije i osteoporoze, retko akutni osteomijelitis. Kao glavne terapijske opcije prepoznate su primena enzimske terapije i terapija redukcijom supstrata, a bitno mesto zauzimaju i primena biofosfonata, hormonske supstitucione terapije, raloksifena, kalcitonina, stroncijum-ranelata, paratiroidnog hormona. Ortopedske intervencije takođe imaju svoje mesto u terapiji kostanih manifestacija GB, dok je pokazano da splenektomija ima negativan dugorocni uticaj na kostane manifestacije u GB. Patofizioloski mehanizam nastanka kostanih manifestacija u GB jos uvek je nedovoljno razjasnjen, a iste imaju za posledicu smanjenje funkcijske sposobnosti i kvaliteta života pacijenta. Rana dijagnoza kostanih promena u pacijenata sa GB kljuc je za dobre terapijske odluke i sto raniju primenu istih.
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- 2017
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21. Diabetic ketoacidosis, hypertriglyceridemia and acute pancreatitis- a case report
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Snezana Vujosevic, Djordjije Krnjevic, Sanja Borozan, Brigita Smolovic, Aleksandar Djogo, and Sreten Kavaric
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medicine.medical_specialty ,Diabetic ketoacidosis ,business.industry ,Internal medicine ,Hypertriglyceridemia ,Medicine ,Acute pancreatitis ,business ,medicine.disease ,Gastroenterology - Published
- 2018
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22. IGF-1 corellates with cognitive status in esrd patients undergoing haemodialysis
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Vladimir Prelevic, Tanja Antunovic, Danilo Radunovic, Marina Ratkovic, Najdana Gligorovic-Barhanovic, and Snezana Vujosevic
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medicine.medical_specialty ,business.industry ,Internal medicine ,medicine ,Cognitive status ,business - Published
- 2018
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23. The impact of different glucose-lowering regimens on cardiovascular disease in type 2 diabetes
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Selim Agic, Sreten Kavaric, Sanja Borozan, Aleksandar Djogo, Emir Muzurovic, Olivera Boskovic, Snezana Vujosevic, Djordjije Krnjevic, Dragomir Madzgalj, and Sanja Vucetic
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Glucose lowering ,medicine.medical_specialty ,Endocrinology ,business.industry ,Internal medicine ,medicine ,Type 2 diabetes ,Disease ,medicine.disease ,business - Published
- 2018
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24. The role of lipids in prediction of gestational diabetes mellitus
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Olivera Boskovic, Snezana Vujosevic, and Emir Muzurovic
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Gestational diabetes ,medicine.medical_specialty ,business.industry ,Obstetrics ,Medicine ,business ,medicine.disease - Published
- 2018
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25. Quality of life of patients with active acromegaly which didn't underwent surgery
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Snezana Vujosevic, Olivera Boskovic, Zlata Kovacevic, and Emir Muzurovic
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medicine.medical_specialty ,Quality of life ,business.industry ,Acromegaly ,medicine ,medicine.disease ,business ,Surgery - Published
- 2018
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26. Increased Serum Level of IGF-1 Correlates With Better Cognitive Status in End-Stage Renal Disease Patients Undergoing Hemodialysis
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Vladimir, Prelevic, Danilo, Radunovic, Tanja, Antunovic, Marina, Ratkovic, Najdana, Gligorovic-Bahranovic, Branka, Gledovic, Snezana, Vujosevic, Mirjana, Nedovic-Vukovic, and Nikolina, Basic-Jukic
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Male ,Montenegro ,Cognition ,Renal Dialysis ,Humans ,Kidney Failure, Chronic ,Female ,Insulin-Like Growth Factor I ,Middle Aged ,Neuropsychological Tests ,Cognition Disorders - Abstract
Prevalence of cognitive function decline in end stage renal disease (ESRD) patients undergoing hemodialysis is higher than in the general population. We analyzed risk factors for cognitive function decline in those patients. This study included 93 ESRD patients undergoing hemodialysis two or three times a week in three centers for hemodialysis in Montenegro. The cognitive status of patients was assessed using the mini mental score examination (MMSE) test. All 93 patients have been divided into three groups according to the results of MMSE. Patients in the first group had severe cognitive impairment and MMSE score below 17 (26.88%), patients in the second group with MMSE score 18-23 had moderate cognitive impairment (40.86%) and third group of patients have MMSE24 and no cognitive impairment (32.26%). There were no significant differences between groups for gender, smoking habits and level of parathyroid hormone. Level of schooling was significantly different between groups of patients (P 0.001). Laboratory markers observed in this study with significant differences between groups were: IGF 1, IGFBP 3, erythrocytes and hemoglobin (P 0.001, P = 0.004, P 0.001, P = 0.002, respectively). IGF 1 proved to be of great importance for evaluating cognitive status in our study. This marker was statistically different between groups (P 0.001) and Tukey post hoc analysis showed significant differences between all three groups (first and second group P = 0.045, second and third group P = 0.015, first and third group P 0.001). Our data suggest that IGF 1 can be considered as novel biomarker for assessment of cognitive functioning in CKD patients, which can be of huge clinical importance.
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- 2017
27. Relationship between 25-Hydroxyvitamin D and Newly Diagnosed Type 2 Diabetes Mellitus in Postmenopausal Women with Osteoporosis
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Svetlana Aligrudic, Snezana Vujosevic, Dragica Bozovic, Nemanja Radojevic, and Sanja Borozan
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Adult ,medicine.medical_specialty ,25-Hydroxyvitamin D ,Type 2 diabetes ,Sensitivity and Specificity ,Gastroenterology ,vitamin D deficiency ,Body Mass Index ,Insulin resistance ,Internal medicine ,Diabetes mellitus ,Type 2 diabetes mellitus ,medicine ,Vitamin D and neurology ,Humans ,Prospective Studies ,Vitamin D ,Osteoporosis, Postmenopausal ,Aged ,Original Paper ,business.industry ,Type 2 Diabetes Mellitus ,General Medicine ,Odds ratio ,Middle Aged ,Vitamin D Deficiency ,medicine.disease ,Lipids ,Endocrinology ,Diabetes Mellitus, Type 2 ,Osteoporosis ,Female ,Insulin Resistance ,business ,Body mass index - Abstract
Objective: The aim of the study was to determine a correlation between the level of 25-hydroxivitamin D (25-OHD) and the incidence of diabetes. Subjects and Methods: In this prospective observational study, 97 (out of an initial 100) Caucasian women with osteoporosis (OS) were monitored for 2 years for the incidence of diabetes. Logistic regression analysis was used to establish an association with and prognostic value of vitamin D for the onset of type 2 diabetes mellitus, as well as insulin resistance, body mass index (BMI), total cholesterol and triglyceride levels in the development of diabetes. The serum level of 25-OHD was measured using immunochemiluminescence in March and April 2011. Results: Of the 97 patients (mean age 51.64 ± 5.86 years, range 36.0-73.0), 21 (21.65%) were diagnosed with diabetes during the observational period. The study showed that the 22 patients with low levels of vitamin D were more susceptible to diabetes (odds ratio = 0.958). The cut-off value of vitamin D using a receiver operating characteristic curve was 62.36 nmol/l with a sensitivity of 39.5% and a specificity of 90.5%. With an increase in BMI and triglyceride levels, women were, respectively, 1,591 and 2,821 times more likely to get diabetes than those without an increase. Conclusion: This study showed that the patients with postmenopausal OS and hypovitaminosis D, besides a high BMI, elevated triglyceride levels and insulin resistance, had an increased risk of developing type 2 diabetes.
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- 2014
- Full Text
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28. Cancerous leptomeningitis and familial congenital hypopituitarism
- Author
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Alexandru Saveanu, Vera Popovic, Snezana Vujosevic, S Kavaric, M Ivovic, Jelena Sopta, Thierry Brue, S Vujovic, Márta Korbonits, Centre de recherche en neurobiologie - neurophysiologie de Marseille (CRN2M), and Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
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0301 basic medicine ,Oncology ,Adult ,medicine.medical_specialty ,Hormone Replacement Therapy ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,[SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology ,Population ,Context (language use) ,Hypopituitarism ,03 medical and health sciences ,0302 clinical medicine ,Endocrinology ,Breast cancer ,Fatal Outcome ,Internal medicine ,medicine ,Humans ,Family history ,education ,Cancer ,Familial congenital hypopituitarism ,Homeodomain Proteins ,Ovarian Neoplasms ,education.field_of_study ,business.industry ,Carcinoma ,Ovary ,Hormone replacement therapy (menopause) ,medicine.disease ,3. Good health ,GH ,IGF-I ,Pedigree ,030104 developmental biology ,Meningeal carcinomatosis ,030220 oncology & carcinogenesis ,Growth Hormone ,Female ,business ,Meningeal Carcinomatosis - Abstract
International audience; People are at higher risk of cancer as they get older or have a strong family history of cancer. The potential influence of environmental and behavioral factors remains poorly understood. Earlier population and case control studies reported that upper quartile of circulating IGF-I is associated with a higher risk of developing cancer suggesting possible involvement of the growth hormone (GH)/IGF system in initiation or progression of cancer. Since GH therapy increases IGF-1 levels, there have been concerns that GH therapy in hypopituitarism might increase the risk of cancer. We report a 42-year-old female patient who presented with subacute onset of symptoms of meningitis and with the absence of fever which resulted in death 70 days after the onset of symptoms. The patient together with her younger brother was diagnosed at the age of 5 years with familial congenital hypopituitarism, due to homozygous mutation c.150delA in PROP1 gene. Due to evolving hypopituitarism, she was replaced with thyroxine (from age 5), hydrocortisone (from age 13), GH (from age 13 until 17), and sex steroids in adolescence and adulthood. Her consanguineous family has a prominent history of malignant diseases. Six close relatives had malignant disease including her late maternal aunt with breast cancer. BRCA 1 and BRCA 2 mutational analysis in the patient's mother was negative. Histology after autopsy disclosed advanced ovarian cancer with multiple metastases to the brain, leptomeninges, lungs, heart, and adrenals. Low circulating IGF-1 did not seem to protect this patient from cancer initiation and progression in the context of strong family history of malignancies.
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- 2016
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29. Sudden unexpected death associated with Hashimoto’s thyroiditis and thymic hyperplasia
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Nemanja Radojevic, Sanja Medenica, Slobodan Savic, and Snezana Vujosevic
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Male ,0301 basic medicine ,Pathology ,medicine.medical_specialty ,business.industry ,Hashimoto Disease ,General Medicine ,Hyperplasia ,medicine.disease ,Unexpected death ,Thyroiditis ,Death, Sudden ,Young Adult ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine ,Humans ,Thymus Hyperplasia ,030212 general & internal medicine ,Young adult ,business - Published
- 2017
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30. An extensive precipitation of calcium in subcutaneous tissue in patient with juvenile dermatomyositis
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Koviljka Kazic, Sanja Borozan, Sanja Medenica, Sreten Kavaric, Aleksandar Djogo, Olivera Boskovic, and Snezana Vujosevic
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Pathology ,medicine.medical_specialty ,Precipitation (chemistry) ,business.industry ,chemistry.chemical_element ,Calcium ,medicine.disease ,medicine.anatomical_structure ,chemistry ,medicine ,In patient ,business ,Juvenile dermatomyositis ,Subcutaneous tissue - Published
- 2013
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31. Association between menopausal age and type 2 diabetes mellitus (T2DM) in women with osteoporosis (OS) and hypovitaminosis D
- Author
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Sanja Borozan, Snezana Vujosevic, Svetlana Aligrudic, Dragica Bozovic, and Aleksandar Djogo
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medicine.medical_specialty ,Hypovitaminosis ,Endocrinology ,business.industry ,Internal medicine ,Osteoporosis ,Obstetrics and Gynecology ,Medicine ,Type 2 Diabetes Mellitus ,Menopausal age ,business ,medicine.disease ,General Biochemistry, Genetics and Molecular Biology - Published
- 2015
- Full Text
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32. Mortality After Acute Myocardial Infarction: Significance of Cardiovascular Diabetic Autonomic Neuropathy (CDAN)
- Author
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Sinisa Stamatovic, Natasa Belada, Snezana Vujosevic, and Miroslava Zamaklar
- Subjects
Aged, 80 and over ,Male ,Diabetic Autonomic Neuropathy ,medicine.medical_specialty ,business.industry ,Myocardial Infarction ,General Medicine ,Hospital mortality ,Middle Aged ,medicine.disease ,Blood pressure ,Diabetes Mellitus, Type 2 ,Diabetic Neuropathies ,Diabetes mellitus ,Internal medicine ,Heart rate ,medicine ,Cardiology ,Humans ,Female ,Long term mortality ,Hospital Mortality ,Myocardial infarction ,business ,Aged - Abstract
The aim of this study was to compare intrahospital and long-term mortalities after more than 10 years of the follow up after the first acute myocardial infarction (AMI) with patients with and without CDAN and without diabetes mellitus (DM). Methods: The study was based on 76 (43 men and 33 women) with DM type 2, CDAN was detected in 51 patients, and 374 (295 men and 79 women) without DM consecutively hospitalized with the first-ever AMI from January 1998. to December 2000. in Clinical Center of Montenegro Podgorica. Patients were followed until December 31. 2011. CDAN was searched for by standardized five tests evaluating heart rate and blood pressure variations. Results: Intrahospital mortality was presented in 10. 53 % diabetic patients and 5. 61 % nondiabetic patients, this difference is significant (p=0.048). Long-term mortality was presented at 24 (82. 75%) patients with CDAN and 5 (17. 25%) patients without CDAN (p=0.029). Long term mortality rate was significantly higher in diabetic patients 29 (42. 64 %) than in nondiabetic patients 102 (30. 72 %) (p=0.012). Conclusion: Intrahospital mortality was significantly higher in diabetic than in nondiabetic patients. Identically the mortality after more than 10 years of the follow up after the first AMI was significantly higher in diabetic with, than in diabetic patients without CDAN, as in diabetic than in nondiabetic patients.
- Published
- 2012
- Full Text
- View/download PDF
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