187 results on '"Kostić Marina"'
Search Results
152. Epidemiological Characteristics of Carrying Viral Hepatitis B Antigen in the Population of the Nišava District
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Kostić, Marina, primary, Kocić, Biljana, additional, and Rančić, Nataša, additional
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- 2014
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153. Epidemiological characteristics of carriers of antibody against hepatitis C virus in the population of Nišava district
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Kostić, Marina, primary, Kocić, Biljana, additional, and Popović Dragonjić, Lidija, additional
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- 2014
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154. INFORMACIONE TEHNOLOGIJE U FUNKCIJI UPRAVLJANJA ZNANJEM KAO KONKURENTSKE PREDNOSTI
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Šekarić, Mirjana, primary, Kostić, Marina, additional, and Šekarić-Sotirovski, Jelena, additional
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- 2014
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155. INSTITUCIJE KAO PARADIGME
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Kostić, Marina, primary
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- 2014
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156. POLITIKA PROŠIRENJA EVROPSKE UNIJE: KONCEPT, NAUČENE LEKCIJE I SLUČAJ SRBIJE
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Kostić, Marina, primary
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- 2014
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157. Internet-Based Promotion of Safer Sex and Condom Use among Young People
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Kocić, Biljana, primary, Kostić, Marina, additional, and Cagulović, Tatjana, additional
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- 2013
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158. MONITORING OF COMMUNICABLE DISEASES IN THE NIŠAVA AND TOPLICA DISTRICTS DURING THE PERIOD FROM 2009 TO 2013.
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Milošević, Zoran, Anđelković-Apostolović, Marija, Rangelov, Tamara, Kostić, Marina, Bogdanović, Dragan, Stojanović, Miodrag, Marković, Roberta, Milošević, Sanja, and Mitić-Lakušić, Vesna
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COMMUNICABLE diseases ,PATIENT monitoring - Abstract
Copyright of Acta Medica Medianae is the property of Acta Medica Medianae and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2015
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159. Obesity as a risk factor for type 2 Diabetes mellitus in a population of Niš
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Ilić, Mirko, primary, Rančić, Nataša, additional, Lazarević, Konstansa, additional, Deljanin, Zorana, additional, Kostić, Marina, additional, and Stanojković, Aleksandar, additional
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- 2012
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160. Costs of Rheumatoid Arthritis in a Balkan Country (Serbia)
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Janković, Slobodan, primary, Kostić, Marina, additional, Radosavljević, Marija, additional, and Jovanović, Snežana, additional
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- 2009
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161. Cost-Effectiveness Comparison of Fidaxomicin and Vancomycin for Treatment of Clostridium difficileInfection: A Markov Model Based on Data from a South West Balkan Country in Socioeconomic Transition
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Marković, Veroljub, Kostić, Marina, Iličković, Ivana, and Janković, Slobodan M.
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Recent studies have shown that fidaxomicin, a novel antibiotic, can reduce the rate of complications and mortality in patients with colitis induced by Clostridium difficile. Introduction of fidaxomicin in clinical practice is limited by its high costs.
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- 2014
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162. Development of a Natural Preservative from Chestnut Flowers: Ultrasound-Assisted Extraction Optimization and Functionality Assessment.
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Alaya, Ikbel ben, Pereira, Eliana, Dias, Maria Inês, Pinela, José, Calhelha, Ricardo C., Soković, Marina, Kostić, Marina, Prieto, Miguel A., Essid, Faten, Caleja, Cristina, Ferreira, Isabel C. F. R., and Barros, Lillian
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CHESTNUT ,RESPONSE surfaces (Statistics) ,TANNINS ,FUNCTIONAL foods ,FOOD preservatives ,PHENOLS ,FLAVONOIDS - Abstract
This study was carried out with the aim of optimizing the ultrasound-assisted extraction (UAE) of phenolic compounds from male chestnut flowers (C. sativa Mill) to develop a bioactive extract with potential to be used as a natural antioxidant preservative ingredient in the food industry. Time (t, 1–39 min), solvent concentration (S, 0–100%), and ultrasonic power (P, 5–500 W) were used as the independent variables for a 5-level experimental circumscribed central composite design (CCCD) coupled with response surface methodology (RSM) to optimize the extraction of phenolic compounds by UAE. Regarding the variables, the three showed a significant effect on the extraction of phenolic compounds. The content of phenolic compounds (including flavonoids and tannins) and the extraction yield (extract weight gravimetrically assessed) were the response criteria for the optimization. Based on the statistically validated predictive polynomial models, it was possible to reach a maximum content of phenolic compounds at the global optimal conditions of 24 ± 3 min, 259 ± 16 W, and 51 ± 7% ethanol. Additionally, pentagalloyl-glucoside and trigalloyl-hexahydroxydiphenoyl-glucoside were the major phenolic compounds identified. The optimized extract was then analyzed for their biological properties. The bioactive potential of the chestnut flower extract obtained under these optimized conditions was evaluated using in vitro assays for antioxidant, anti-inflammatory, and antimicrobial activity, as well as cytotoxicity and hepatotoxicity tests. The results revealed that the enriched extract has antioxidant, antitumoral, and anti-inflammatory activities without toxicity issues. Overall, this study allowed to define the optimal conditions for the extraction of phenolic compounds from chestnuts male flowers by UAE, to obtain an enriched extract with biological properties that could be further used as a natural antioxidant ingredient with applications on functional foods. [ABSTRACT FROM AUTHOR]
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- 2021
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163. INFORMACIONE TEHNOLOGIJE U FUNKCIJI UPRAVLJANJA ZNANJEM KAO KONKURENTSKE PREDNOSTI.
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Šekarić, Mirjana, Kostić, Marina, and Šekarić-Sotirovski, Jelena
- Abstract
Copyright of Singidunum Journal of Applied Sciences is the property of Singidunum University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2014
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164. SELENIUM-FUNCTIONALIZED CYCLIC ETHERS DERIVED FROM NATURAL TERPENIC ALCOHOLS -- BIOLOGICAL IN VITRO PROFILE.
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Mihajlović, Kristina Z., Divac, Vera M., Kostić, Marina D., Živanović, Marko N., Grujić, Jelena, and Virijević, Katarina
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CYCLIC ethers , *COLON cancer , *NATURAL products , *CANCER cells , *CELL survival - Abstract
Terpenic alcohols linalool, nerolidol and α-terpineol were subjected to the PhSe-induced cyclization, where corresponding cyclic ethers were obtained. The heterocyclic product derived from α-terpineol is a derivate of the natural product eucalyptol, while linalool cyclization produces precursors of the natural product karahanaenone. All three cyclic ether products have an organoselenium moiety in the side chain, which can represent a significant source of bioactivities. Biological evaluation of obtained products, in vitro cytotoxicity and redox status parameters, was performed on two model systems: HCT-116 -- immortalized colon cancer cell line, and MRC-5 -- healthy fibroblasts isolated from lung pleura. The results indicate a strong prooxidative character of all compounds on colon cancer HCT-116 and healthy MRC-5 cells in the highest applied concentrations. Selectivity towards cancer cells was not observed, except when nerolidol-derived product was used for longer exposure time. A biological evaluation was conducted to establish the quantitative relationship between enhanced radical species formation and cell viability. [ABSTRACT FROM AUTHOR]
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- 2022
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165. Alcohol consumption among adolescents in Kraljevo, Serbia
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Djordjevic Natasa, Bogojevic Jelena, and Kostic Marina
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alcohol ,adolescents ,risk factors ,serbian ,Medicine - Published
- 2011
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166. Waste assaying and radiation monitoring equipment at the waste management centre of NPP Leningrad
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Šokčić-Kostić Marina
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waste management ,radiation monitoring ,radiological impact ,gamma camera ,drum monitoring system ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
The waste accumulated in the past at the Nuclear Power Plant Leningrad has to be sorted and packed in an optimal way. In the area of waste treatment and management, the completeness and quality of direct monitoring are of the outmost importance for the validity of, and confidence in, both practicable waste management options and calculations of radiological impacts. Special monitoring systems are needed for this purpose. Consistent with the scale of work during the waste treatment procedures and the complexity of the plant data have to be collected from characteristic parts in various treatment stages. To combine all the information, a tracking procedure is needed during the waste treatment process to characterize the waste for interim and/or final disposal. RWE NUKEM GmbH has developed special customer-tailored systems which fulfill the specifications required by plant operation and by the authorities.
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- 2006
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167. Anti-inflammatory potential of Croatian indigenous Micromeria species rich in rosmarinic acid
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Vladimir-Knežević, Sanda, Bival Štefan, Maja, Jelić, Dubravko, Bučar, Franz, Soković, Marina, and Kostić, Marina
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Micromeria, anti-infammatory, rosmarinic acid - Abstract
Micromeria species are rich sources of essential oils and polyphenols. They are traditionally used against colds, wounds, skin infections, headache, cardiac disorders, and digestive system problems. The important representatives of genus Micromeria in Croatian flora are M. croatica (Pers.) Schott, M. thymifolia (Scop.) Fritsch and M. juliana (L.) Bentham ex Reichenb. The first two are endemic species in Croatia and in some neighbouring countries, while M. juliana is more widely distributed in Mediterranean region. The aim of the study was to evaluate polyphenolic profile and anti-inflammatory potential of these Croatian indigenous plants. Total phenolic acid and flavonoid contents (5.26-6.84% and 0.01-0.09%, respectively) in dried aerial parts were determined spectrophotometrically. Furthermore, eleven hydroxycinnamic derivatives and fifteen flavonoids were identified in the ethanolic extracts by LC-ESI-MS/MS. Most of them were detected in the studied plant species for the first time, such as cryptochlorogenic and salvianolic acids. Rosmarinic acid (13.50-26.1 mg/g) was found to be the predominant constituent (RP-HPLC-DAD). The Micromeria ethanolic extracts inhibited Src tyrosine kinase activity in the time-resolved fluorescence resonance energy transfer (TR-FRET) assay. Modulation of interleukin-6 (IL-6) in LPS-stimulated mouse splenocytes by tested extract was determined using ELISA assay. The plant extracts reduced the production of proinflammatory cytokine IL-6, with a substantial contribution of rosmarinic acid contained. Our results indicated the multi-target mechanism of polyphenolic constituents of Micromeria species and highlighted their potential in the prevention and treatment of inflammatory-related diseases.
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- 2021
168. Дијагностичке перформансе и економски аспекти тестова за детекцију Chlamydia-e trachomatis
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Tošić Pajić, Jelena, Šorak, Marija, and Kostić, Marina
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diagnostic tests ,C. trachomatis ,economic aspects ,dijagnostički testovi ,dijagnostička efikasnost ,ekonomski aspekti ,diagnostic efficiency - Abstract
C. trachomatis je najčešća seksualno prenosiva bakterijska infekcija u svetu. Procenjuje se da hlamidija seksualnim putem inficira preko 100 miliona ljudi svake godine širom sveta. Akutne infekcije donjeg genitalnog trakta izazvane C. trachomatis (uretritis kod muškaraca, cervititis i uretritis kod žena) su uglavnom asimptomatske te stoga infekcije najčešće prolaze nedijagnostikovane i nelečene, a kao posledica toga kod 20%-40% slučajeva infekcija se širi u gornji genitalni trakt. U gornjem genitalnom traktu,i pored aktivacije imunoloških mehanizama odbrane, hlamidije uspevaju da opstanuzahvaljujući svojojizuzetnoj sposobnosti izbegavanja imunskog odgovora domaćina, što može dovesti do do ozbiljnih oštećenja i komplikacija vezanih za reproduktivno zdravlje žena. Asimptomatska priroda infekcije kao i specifičan razvojni ciklus hlamidija predstavljaju pravi izazov za postavljanje dijagnoze akutne hlamidijalne infekcije. Za uspešnu dijagnozu hlamidijalnih infekcija neophodno je napraviti dobar odabir testa koji obezbeđuje visoku senzitivnost i specifičnost, ali i brzinu izvođenja testa, što su po preporukama evropskog i američkog centra za kontrolu bolesti svakako testovi amplifikacije nukleinskih kiselina. Danas je dostupan veći broj komercijalnih PCR i RT-PCR testova koje karakteriše visoka senzitivnost i specifičnost. Međutim, visoka cena ekonomskih troškova ovih testova, uz tehničku kompleksnost vezanu za prostor, kadar i opremu, uslovili su da je za većinu dijagnostičkih laboratorija u zemljama sa nižim prihodima ovaj standard nedostižan. Tako je u izboru optimalnog dijagnostičkog pristupa neophodno odabrati test koji ima zadovoljavajuće, ne samo dijagnostičke, već i ekonomske performanse. Osnovni cilj ovog istraživanja jeutvrđivanje dijagnostičke efikasnosti četiri pojedinačnatesta (DIF, BT, IgA i IgG),kao i kombinacije pomenutih testova, u odnosu na RT-PCR metodu koja predstavlja zlatni standard za postavljanje dijagnoze akutne hlamidijalne infekcije. Pored ispitivanja dijagnostičke efikasnosti studija pruža uvid i u ekonomsku analizu pomenutih testova u odnosu na RT-PCR metodu. Rezultati naše studije ukazuju na slabo slaganje rezultata dobijenih pomoću zlatnog standarda (RT-PCR) sa rezultatima dobijenim upotrebom skrining testova (DIF, BT, IgA i IgG). Od svih analiziranih testova najbolje slaganje u odnosu na zlatni standard pokazuje brzi test lateralne hromatografije (VT). Kombinacijom testova pokriterijumu „pozitivna dva ili više testa“ i „pozitivan bilo koji test“ nismo popravili slaganjerezultata u odnosu na pojedinačne skrining testove. Analizirajući dijagnostičku efikasnost pojedinačnih skrining testova utvrdili smo da VT povećini analiziranih parametara pokazuje najboljudijagnostičku efikasnost, doktest direktne imunofluorescencije i serumski nivo IgA i IgG antitela, u odnosu na VT, pokazuju bolje uravnotežen odnos senzitivnosti i specifičnosti. Kombinacijom testova po kriterijumu „pozitivna dva ili više testa“ i „pozitivan bilo koji test“ nismo uspeli da popravimo dijagnostičku efikasnostu odnosu na pojedinačne skrining testove, odnosno BT koji je pojedinačno imao najbolje parametre dijagnostičke efikasnosti. Shodno tome, ove kombinacije testova se ne mogu preporučiti za dijagnozu akutne hlamidijalne infekcije. Ipak, kombinacija DIF/IgA (pozitivan bilo koji test) koja pokazuje dobro izbalansiran odnos senzitivnosti i specifičnosti uz superiornu senzitivnost od 100% te se i pored niske pozitivne prediktivne vrednosti može koristiti u situacijama koje zahtevaju visoku senzitivnost. Interensantan podatak je da smo ROC analizom serumskog nivoa IgA i IgG antitela na hlamidijalni MOMR antigen i određivanjem novih cut–off vrednosti (na osnovu karakteristika ROC krive) popravili dijagnostičku efikasnost ovih testova u odnosu na rezultate dobijene na osnovu cut–offvrednosti preporučenihod strane proizvođača testa. Isto možemo da kažemo i za obe grupe kombinacija IgA+IgG testa (pozitivna oba testa) i kombinacije IgA/IgG (pozitivan bilo koji test). Ekonomska analiza ukazuje da su, za dati scenario, najmanji ukupni troškovi po pacijentu kod korišćenja brzog testa, te je stoga primena ovog testa dominantna ekonomska strategija, a prve alternative su serološke metode. Primena kombinacije testova nije isplativa ekonomska strategija jer su ukupni troškovi po pacijentu veći od troškova primene pojedinačnih testova. Imajući u vidu prethodnu analizu dijagnostičke efikasnosti kombinovanih testova, takvom praksom se jedino uvećavaju troškovi analize, bez bitno unapređenih dijagnostičkih performansi. Iako su dijagnostičke performanse svih testova, kako pojedinačnih, tako i kombinovanih, u odnosu na PCR metodu znatno slabije, njena visoka početna cena, u uslovima troškova nacionalnog zdravstvenog sistema, ne može da se kompenzuje boljim dijagnostičkim rezultatima u ukupnom ekonomskom profilu datog scenarija. C. trachomatis is the most common sexually transmitted bacterial infection in the world. It is estimated that chlamydia sexually infects more than 100 million people every year worldwide.Acute infections of the lower genital tract caused by C. trachomatis (uretritis in men, cervicitis and urethritis in women) are mostly asymptomatic, and therefore infections commonly passed undiagnosed and untreated. As a consequence, in 20% -40% of cases, the infection spreads to the upper genital tract. Despite the activation of immune defense mechanisms in the upper genital tract, chlamydia is able to survive owing to its remarkable ability to avoid the host immune response, which can lead to serious damage and complications related to the reproductive health of women. The asymptomatic nature of the infection as well as the specific developmental cycle of chlamydia is a real challenge for establishing the diagnosis of an acute chlamydial infection. For a successful diagnosis of chlamydial infections it is necessary to make a good selection of the test which provides high sensitivity and specificity, as well as the speed of the test, which, according to the recommendations of the European and American Center for Disease Control, are certainly nucleic acid amplification tests. A number of commercial PCR and RTPCR tests are available today, characterized by high sensitivity and specificity. However, the high price of the economic costs of these tests, with the technical complexity of space, personnel and equipment, has made it uncertain for the most diagnostic laboratories in low-income countries. In the selection of an optimal diagnostic approach, it is necessary to select a test that has satisfactory, not only diagnostic, but also the economic performances. The main objective of this study is to determine the diagnostic efficacy of four individual tests (DIF, BT, IgA and IgG), as well as combinations of these tests in relation to the RT-PCR method, which represents the golden standard for diagnosing an acute chlamydial infection. In addition to testing the diagnostic efficiency, the study provides an insight into the economic analysis of the tests mentioned above in relation to the RT-PCR method. The results of our study indicate poor agreement between the results obtained by using the screening tests (DIF, BT, IgA and IgG) in relation to the golden standard (RT-PCR). Of the all analyzed tests, the best matching in relation to the golden standard shows a rapid test of the lateral chromatography (RT). We did not correct the matching of the results in relation to the individual screening tests by combining the tests with the criteria "positive two or more tests" and "positive any test". Analyzing the diagnostic efficiency of individual screening tests, we have established that RT shows the best diagnostic efficacy in most of the analyzed parameters, while the direct immunofluorescence test and serum IgA and IgG antibody levels in comparison to RT show a more balanced relation of sensitivity and specificity. By combining the tests using the criteria "positive two or moretests" and "positive any test", we were unable to improve the diagnostic efficiency in relation to individual screening tests that is RT, which individually had the best parameters of diagnostic efficiency. Consequently, these test combinations cannot be recommended for the diagnosis of an acute chlamydial infection. However, the combination of DIF/IgA (positive any test) that shows a well balanced sensitivity and specificity ratio with superior sensitivity of 100%, and despite a low positive predictive value, can be used in situations requiring high sensitivity. An interesting fact is that the ROC analysis of the serum IgA and IgG antibody levels to the chlamydial MOMR antigen and the determination of new cut-offs (based on the characteristics of the ROC curve) corrected the diagnostic efficacy of these tests in relation to the results obtained from the cut-off values recommended by the test manufacturers. The same can be said for both groups of combination IgA + IgG test (positive both tests) and IgA / IgG combinations (positive any test). Economic analysis indicates that for the given scenario, the lowest total cost per patient is in the use of a rapid test, and therefore the application of this test is the dominant economic strategy, and the first alternatives are serological methods. Using a combination of tests is not a cost-effective economic strategy because the total cost per patient is greater than the cost of using individual tests. Taking into account the previous analysis of the diagnostic efficiency of combined tests, such practice only increases the cost of analysis, without significantly improved diagnostic performance. Although the diagnostic performances of all the tests, both individual and combined are considerably lower compared to the PCR method, its high starting price, in the terms of costs of the national healthcare system, cannot be compensated for better diagnostic results in the overall economic profile of the given scenario.
- Published
- 2019
169. Medication-induced nausea assessment questionnaire and analysis of the factors that contribute to the manifestation of nausea
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Prokić, Anđelka, Janković, Slobodan, Milovanović, Jasmina, Kostić, Marina, and Veličković Radovanović, Radmila
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PROMIS ,Upitnik ,DINS ,Questionnaire ,preparati gvožđa ,mučnina ,nausea ,iron supplements - Abstract
UVOD. Mučnina, neprijatan osećaj u predelu grla i/ili želuca, koji može i ne mora dovesti do povraćanja, je svesno prepoznavanje podsvesne ekscitacije u oblasti medule, blisko udružene sa delovima centra za povraćanje. Mučnina može biti uzrokovana: iritativnim impulsima iz gastrointestinalnog trakta, impulsima koji potiču iz donjih moždanih struktura, povezanim sa bolešću vožnje i impulsima iz cerebralnog kortkesa. Lekovi izazivaju mučninu u različitoj meri, što je od značaja kada treba izabrati terapiju kod pacijenta koji mučninu teško podnose i skloni su odustajanju od dalje terapije. Apstraktne koncepte (kakav je i mučnina) je teško kvantitativno izmeriti, i u tu svrhu koristimo upitnike. CILjEVI RADA. Studija je imala tri cilja: (1) prevođenje i transkulturološka validacija dela upitnika o gastrointestinalim simptomima iz ugla pacijenta (PROMISGSS deo koji se odnosi na mučninu i povraćanje); (2) razvoj i ispitivanje sopstvenog upitnika za procenu mučnine posle primene lekova, kroz utvrđivanje pouzdanosti, validaciju i faktorsku analizu; (3) utvrđivanje faktora koji doprinose prekidu terapije zbog ekstremne mučnine kod pacijenata na terapiji gvožđem. METODOLOGIJA. Skala koja meri gastrointestinalne simptomime iz ugla pacijenta (PROMIS-GSS deo koji se odnosi na mučninu i povraćanje), prevedena je na srpski jezik i izvršena je transkulturološka validacija iste. Prevod i kulturološka adaptacija skale urađena je u skladu sa preoprukama datim u ISPOR (International Society for Pharmacoeconomics and Outcomes Research) vodiču. Razvijen je i sopstveni upitnik za procenu mučnine posle primene lekova (DINS-Drug Induced Nausea Scale), utvrđeni su njegova pouzdanost, validnost i sprovedena faktorska analiza. Ispitivanje pouzdanosti upitnika obavljeno je kroz određivanje koeficijentaIV Kronbahova alfa za ceo upitnik, Spirman-Braunovog koeficijenta i srednje vrednosti i varijanse za svako pitanje iz upitnika. Punovažnost sadržaja upitnika evaluirala je grupa stručnjaka nezavisna od istraživača. Punovažnost povezana sa kriterijumom je testirana pomoću tri metode: poređenjem novog upitnika kada su ovaj popunili istraživači i pacijenti samostalno; konvergentna validnost je testirana poređenjem skora novog upitnika sa skorom PROMIS-GSS nausea; divergentna validnost testitrana je poređenjem skora novog upitnika sa skorom upitnika Netolerancije neizvesnosti (Intolerance Uncertanity). Analiza glavnih komponenti upitnika rađena je da bi se otkrili glavni faktori koje upitnik meri. Pogodnost upitnika i uzorka za faktorsku analizu testirana je pomoću Bartletovog testa sferičnosi i Kajzer-Mejer-Olkinovog testa adekvatnosti uzorkovanja. Faktori su ekstrahovani prvo bez rotacije, uz uslov da brojka koja označava količinu informacija koju nosi jedan faktor (eigenvalue) mora biti veći od 1 i korišćenjem Scree plot (ekstrahovani faktori bili su iznad ,,lakta“ dijagrama). Potom su referentne ose rotirane ortogonalno Varimaks metodom i urađena je još jedna ekstrakcija faktora, koristeći iste kriterijume kao za nerotirajuće rešenje. Vremenska stabilnost novog upitnika i PROMIS-GSS nauseaupitnika testirani su drugim popunjavanjem upitnika , koje su istraživači obavili dve nedelje posle prve posete apoteci. Prisustvo i stepen mučnine izazvane preparatima gvožđa meren je DINS-om. Studija je dizajnirana kao opservaciona, a metodologija rada je podrazumevala studiju preseka. Uzorak pacijenata je bio uzastopan tj. u studiju su uključeni svi pacijenti koji su posetili apoteku tokom trajanja studije (njih 128), a koristili su oralne preparate gvožđa. Anketiranje je izvršeno anonimno i na dobrovoljnoj osnovi. REZULTATI I ZAKLjUČCI. DINS skala meri jedan fenomen, intenzitet mučnine izazvane oralnim preparatima gvožđa. Ima odličnu pouzdanost (Kronbahova alfa 0.892, kada je ocenjen od strane istraživača,Spirmanov koeficijent 0.965; (p
- Published
- 2019
170. Population pharmacokinetics of 25-hydroxy vitamin D in students
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Milovanović, Olivera Z., Milovanović, Jasmina, Janković, Slobodan, Veličković Stošić, Radmila, Kostić, Marina J., and Jović-Stošić, Jasmina
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students ,25-dihidroksi vitamin D ,25-hidroksi vitamin D ,Population pharmacokinetics ,populaciona farmakokinetika ,25-hydroxy vitamin D ,25- dixydroxy vitamin D ,NONMEM - Abstract
Vitamin D, jedan od liposolubilnih vitamina, predstavlja sferu interosavanja naučnih istraživanja usled plejade efekata koje ostvaruje u ljudskom organizmu. Epidemijske razmere hipovitaminoze D širom sveta u različitim starosnim grupama predstavljaju zabrinjavajući podatak. Sprovedena studija je bila po tipu serije slučajeva i imala je cilj da izvrši populacionu farmamkokinetičku analizu 25-hidroksi vitamina D kod studenata Fakulteta medicinskih nauka, Univerziteta u Kragujevcu, pomoću NONMEMA- softverskog programa. Sprovedena analiza je imala za cilj da precizno definiše farmakokinetički model klirensa 25-hidroksi vitamina D u ispitivanoj populaciji tj. da opiše srednju populacionu vrednost klirensa ispitivane supstance, intra- i interindividualnu varijabilnost kao i da definiše faktore koji utiču na srednju, populacionu vrednost klirensa. Pored navedenog studija je ispitivala uticaj statusa vitamina D na prosečnu ocenu ostvarenu na studijama, nivo anksioznosti, depresivnosti i kogniciju. Rezultati sprovedenog istraživanja pokazuju značajan uticaj dva faktora na prosečnu vrednost klirensa 25-hidroksi vitamina D kod studenata a to su prosečna doza vitamina D uneta hranom i serumski nivo fosfata. Serumska koncentracija vitamina D nije pokazala statistički značajan uticaj na prosečnu ocenu na studijama, kao ni na nivo anksioznosti, depresivnosti i kognice. Režim ishrane, tj. koznumiranje ribljih proizvoda je uticalo na serumski nivo 25- hidroksi vitamina D kod ispitanika. Dobijeni farmakokinetički model klirensa 25-hidroksi vitamina D može biti od koristi kod suplementacije vitaminom D u mladoj, zdravoj, studentskoj populaciji. Vitamin D, a fat-soluble vitamin, is a sphere of scientific research due to multiple effects that he achieved at the human body. Epidemic proportion of hypovitaminosis D all over the world at the different age groups is alarming fact. Conducted research, that was case series by type, had aim to carry out population pharmacokinetics analisys of 25-hydroxy vitamin D at students population at the Faculty of Medical Scineces, University of Kragujevac, by using NONMEM- software program. This analysis should exact defined pharmacokinetics model of clearance of 25-hydroxy vitamin D in examined population and describe mean population value of clearance and value of intra- and interindividual variability. Conducted analysis should idetificate factors that have significant influence on mean, population value of clearance of 25-hydroxy vitamin D. Additionally aim of study was to determine influence of serum 25-hydroxy vitamin D concentration on the average school scores, anxiety, depression and cognition level. The study results showed that two factors had important influence on mean, population value of clearance of 25-hydroxy vitamina D and that was mean daily vitamin D intake by food and serum phosphate levels. Serum concentration of 25- hydroxy vitamin D did not show significant influence on average school score and anxiety, depression and cognition levels.Fish consumption has influence on serum 25- hydroxy vitamin D levels. Obtained pharmacokinetics clearance model of 25-hydroxy vitamin D could be used for vitamin D supplementation at young, healthy, student’s population.
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- 2015
171. Examination biological effects of the extract Crataegus nigra Wald. et Kit berries
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Popović-Milenković, Marija T., Janković, Slobodan, Dobrić, Silva, Pavlović-Muratspahić, Dragana, Stefanović, Srđan, and Kostić, Marina J.
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anksilitičko ,fitohemijska anliza ,Crataegus nigra Wald. et. Kit ,antimikrobno dejstvo - Abstract
Crataegus nigra, crni glog, može biti žbun ili nisko drvo. Njegovo stanište su plavni, aluvijalni tereni kraj većih reka u Mađarskoj, Srbiji, Hrvatskoj. Sam rod Crataegus je vrlo bogat vrstama i mnoge od njih su detaljno fitohemijski i farmakološki ispitivane. Hemijskom karakterizacijom različitih vrsta roda Crataegus je utvrđeno prisustvo flavonoida, flavonoidnih glikozida, procijanidina, dok su farmakološka ispitivanja pokazala kardioprotektivno, antioksidativno, antimikrobno, gastroprotektivno delovanje. Međutim u dosadašnjim ispitivanjima vrste Crataegus nigra istraživanja su bila usmerena samo na botaničke i morfološke karakteristike. U literaturi nema podataka o hemijskom sastavu i farmakološkim osobinama ove vrste. Cilj ovog istraživanja je bio da se odredi hemijski profil ove vrste gloga, kao i utvrđivanje biološke aktivnosti i farmakoloških efekata vodeno-etanolnog ekstrakta plodova C. nigra. Za predviđene analize pripremljen je ekstrakt plodova C. nigra sa 80% etanolom. Primenom referentne metodologije određen je sadržaj ukupnih fenola, flavonoida i procijanidina. Izvršena je identifikacija fenolnih jedinjenja pomoću 45 standardnih supstanci. U in vitro uslovima primenom DPPH testa određena je antioksidativna aktivnost ekstrakta. Ispitivanje farmakoloških efekata sprovedeno je primenom odgovarajućih metodologija pri čemu je određivan anksiolitički, hipnotički efekat i antimikrobna aktivnost etanolnog ekstrakta plodova crnog gloga. Crataegus nigra, black hawthorn, may grow either into shrubs or small trees. Its habitat is the alluvial flood plain along the larger rivers in Hungary, Serbia and Croatia. The genus Crataegus is very rich in species and many of them have been phytochemically and pharmacologically examined thoroughly. Chemical characterization of different species of Crataegus has revealed the presence of flavonoids, flavonoid glycoside, procyanidins, while pharmacological analysis has shown cardioprotective, antioxidative, antimicrobial, gastroprotective effects. However, the previous studies in Crataegus nigra species were focused only on botanical and morphological characteristics. In the literature, there is no data concerning the chemical composition and pharmacological properties of this species. The aim of this research is to determine the chemical profile of this hawthorn species, as well as to determine the biological activity and pharmacological effects of water-ethanol extracts of C. nigra fruits. For the planned analysis, C.nigra fruit extract was prepared in 80% ethanol. Applying reference methodology, the total content of phenols, flavonoids and procyanidins was determined. Phenolic compounds were identified using 45 standard substances. In vitro, antioxidant activity of the extract was determined using DPPH test. Studies on the pharmacological effects were carried out using appropriate methodologies while assessing anxiolytic effect, hypnotic effect and antimicrobial activity of the ethanol extract of black hawthorn fruit. The research findings showed the dominant presence of flavonoid glycosides, among which rutin, isoquercetin and hyperoside stand out by their quantity. The presence of numerous phenolic compounds and procyianidins was proved. The studied extract showed antioxidant effect. When compared with the examined standards (BHT, BHA and quercetin) it was weaker, but it ranked equal in antioxidant activities to other hawthorn species. C.nigra fruit ethanol extract showed significant anxiolytic effect. This statistical significance was noticed as compared to negative control, but was not noticed as compared to positive control (diazepam). Hypnotic effect of the extract also had statistical significance as compared to negative control. Antimicrobial activity against gram-positive and gram-negative bacteria was the strongest at the highest applied concentrations. However, not one of the applied concentrations led to growth inhibition of the fungus Candida albicans.
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- 2014
172. Ekonomska analiza odnosa troškova i efikasnosti dronedarona u odnosu na ostale antiaritmike u lečenju nepermanentne artijalne fibrilacije
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Tešić, Danka, Kostić, Marina, Janković, Slobodan, Dragojević-Simić, Viktorija, Đorđević, Nataša, and Folić, Marko
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atrijalna fibrilacija ,amjodaron ,dronedaron ,propafenon ,Markovljev model ,sotalol - Abstract
Atrijalna fibrilacija je srčana aritmija koja se u „zapadnoj civilizaciji“ ID najčešće javlja. Prevashodno je povezana sa pojavom moždanog udara i srčane insuficijencije, koje vode ka hospitalizaciji i povećanoj stopi smrtnosti. Kako stanovništvo stari očekuje se da se opterećenje atrijalnom fibrilacijom poveća, poznato je da se prevalencija udvostručuje sa svakom narednom decenijom života, od 0,5% u periodu od 50 do 59 godina do skoro 9% u periodu od 80 do 89 godina. Bilo koja strukturna bolest srca može da bude okidač, sporog ali progresivnog remodelovanja kako u komorama tako i pretkomorama, što dalje vodi ka nastanaku više malih ponovnih učesnika strujnih kola koja mogu ustaliti aritmiju. Osnovni ciljevi terapije atrijalne fibrilacije su: sprečavanje paroksizama atrijalne fibrilacije i dugoročno održavanje normalnog sinusnog ritma, kontrola srčanog ritma tokom paroksizama, ukoliko do njih dođe, prevencija komplikacija povezanih sa paroksizmalnom AF (npr. kardiomiopatija indukovana moždanim udarom i tahikardijom). Farmakoekonomske studije su od značaja kada se radi o hroničnim bolestima kakva je atrijalna fibrilacija, ali i kada se uvode novi lekovi u svakodnevnu kliničku praksu. Uvođenje novog leka često podrazumeva i porast troškova lečenja. Izrada Markovljevog modela pruža mogućnost dobijanja seta rezultata koji reflektuju kako efikasnost tako i isplativost ispitivanih terapijskih opcija. Korišćenjem određenih seta opcija moguće je dobijen zaključak proveriti u funkciji vremena, odnosno utvrditi koji ispitivani parametri mogu imaju najveći uticaj na konačnu odluku dobijenu modeliranjem. Cilj ovog istraživanja je upoređenje odnosa troškova i efikasnosti primene dronedarona kod odraslih pacijenata koji su imali ili imaju nepermanentnu atrijalnu fibrilaciju, u odnosu na amjodaron, propafenon i sotalol, u uslovima koji su prisutni u Srbiji. Atrial fibrillation is the most frequently occurring cardiac arrhythmia in the western world. It is primarily associated with an increased risk of stroke and heart failure, in turn leading to hospitalization and increased mortality. The societal burden of AF is furthermore expected to increase as a result of an ageing population, given that its prevalence is doubled with each advancing decade of age, from 0.5% at 50 to 59 years to almost 9% at 80 to 89 years. Any kind of structural heart disease may trigger a slow but progressive process of structural remodelling in both the ventricles and the atria. Structural remodeling results in electrical dissociation between muscle bundles and local conduction heterogeneities facilitating the initiation and perpetuation of AF. This permits multiple small re-entrant circuits that can stabilize the arrhythmia. The main aims of treatment for аtrial fibrillation are: to suppress paroxysms of AF and maintain long-term sinus rhythm; to control heart rate during paroxysms of AF if they occur; to prevent the complications associated with paroxysmal аtrial fibrillation, ie stroke- and tachycardiainduced cardiomyopathy. Modeling in pharmacoeconomy is very important when it comes to chronic diseases such as atrial fibrillation, but also in the field of introducing new drugs in everyday clinical practice. The introduction of new drugs often involves increased costs of treatment. Markov model offers the possibility of obtaining a set of results that reflect both the efficiency and profitability of the examined therapeutic options. Using certain set of options in model we can determine how final decision will be change in the function of time and explore which parameters may have the greatest impact on the final decision which is obtained by modeling. The aim of this study was to compare cost-effectiveness of new anti-arhythmic drug dronedarone with amiodarone, propafenone and sotalol in patients with with non-permanent atrial fibrillation, based on data in Serbia.
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- 2014
173. Analiza faktora koji utiču na mentalno zdravlje pacijenata na hemodijalizi
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Knežević, Marinela, Kostić, Marina J., Mihajlović, Goran, Janković, Slobodan, and Đorđević, Vidojko
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hemodijaliza ,hronična bubrežna insuficijencija ,Mentalno zdravlje ,kvalitet života - Abstract
Izvod (ID): Poput mnogih hroničnih bolesti i hronična bubrežna insuficijencija i terapija bubrežne zamene koja je prati mogu da poremete psihološki status pacijenta. Pacijenti na hemodijalizi imaju veliki broj psihosocijalnih i mentalnih problema. Među brojnim psihijatrijskim komorbiditetima, depresija i nesanica su vodeće. Kvalitet života pacijenata na hemodijalizi je značajno pogođen. Lošiji kvalitet života, prisustvo depresivnosti i nesanice su udruženi sa porastom morbiditeta i mortaliteta kod hemodijaliznih pacijenata. Postoje podaci o uticaju nekih socidemografskih i kliničkih faktora na kvalitet života, depresivnost i nesanicu kod pacijenata na hemodijalizi, ali nedostaju opsežnije studije koje bi uključile veći broj faktora. Prethodne studije ukazuju da hemodijafiltracija može biti efikasnija od konvencionalne hemodijalize u uklanjanju uremičnih toksina kao i smanjenju neželjenih događaja koji se javljaju tokom ili posle dijalize. Takođe, neka istraživanja ukazuju na prednost korišćenja visokopropusnih u odnosu na niskopropusne dijalizne membrane. Cilj ove studije je bio da ispita kvalitet života i utvrdi učestalost i težinu depresivnosti i nesanice kod hemodijaliznih pacijenata. Studija je ispitivala da li sociodemografske i kliničke karakteristike pacijenata, vrsta hemodijalize i hemodijaliznih membrana, dužina dijalize, neki parametri hemodijaliznog procesa i hemodijaliznog ishoda i komorbiditeti mogu imati uticaja na kvalitet života, učestalost i težinu depresivnosti i nesanice kod pacijenata na hemodijalizi. U ovoj studiji preseka učestvovalo je 110 pacijenata podeljenih u tri grupe: hemodijafiltracija, hemodijaliza sa visokopropusnim membranama i hemodijaliza sa niskopropusnim membranama. Mentalno zdravlje je procenjivano pomoću Short Form-36 upitnika, Beck Depression Inventory and Insomnia Severity Index upitnika. Ostali podaci prikupljani su pomoću Restless Legs Syndrome Rating Scale upitnika, upitnika Index of Coexistent Disease i specijalnog upitnika koji je sadržao pitanja koja su se odnosila na sociodemografski i klinički status pacijenta. Prema upitniku, depresija je bila prisutna kod 31,9%, a nesanica kod 45% ispitanika. Kvalitet života je bio bolji kod mlađih pacijenata, pacijenata sa višim stepenom obrazovanja, pacijenata na hemodijafiltraciji, sa efektivnim vremenom provedenim na dijalizi tokom nedelje iznad 720 minuta, višim Kt/V i višim serumskim albuminima. Prisustvo i težina komorbidnih stanja imali su negativan uticaj na kvalitet života. Faktori udruženi sa depresijom bili su pol, obrazovni status, vrsta dijalize, efektivno vreme provedeno na dijalizi tokom nedelje, indeks težine pridruženih bolesti i prisustvo sindroma nemirnih nogu. Na nesanicu su uticaja imali godine, obrazovni nivo, vrsta dijalize i propustljivost membrane, efektivno vreme provedeno na dijalizi tokom nedelje, nivo albumina, težina pratećih oboljenja i prisustvo ishemične bolesti srca. Dati podaci su ukazali na uticaj sociodemografskih faktora, vrste dijalize, parametara procesa i ishoda dijalize i komorbiditeta na kvalitet života, depresiju i nesanicu kod pacijenata na hemodijalizi što je dovoljno da opravda dalja istraživanja u ovoj oblasti. Like many chronic diseases, chronic kidney disease and consenquently renal replacement therapy may affect the psychological state of patients. Hemodialysis patients have a great number of psychosocial and mental health problems. Among numerous psychiatric comorbidity, depression and insomnia are mostly. The quality of life in patients undergoing hemodialysis is significantly disturbed. Poorer health-related quality of life, presence of depression and insomnia is associated with increase in morbidity and mortality among hemodialysis patients. There are data of influence of some sociodemographic and clinical issues on quality of life, depression and insomnia in hemodialysis patients, but it lack extensive studies which should be included more of factors. Previous studies reported that hemodiafiltration (HDF) may be more effective than conventional hemodialysis in the removal of uremic toxins and may reduce frequency and severity of intradialytic and postdialysis adverse symptoms in patients. Also, some researchers suggest advantages of using high-flux membranes compared with low-flux. The aime of this study was to explore health related quality of life and to determine frequency and severity of depression and insomnia in hemodialysis patients. Study examined whether sociodemographic and clinical characteristics of patients, hemodialysis modality and membrane permeability, dialysis vintage, some parametars of hemodialysis proces and hemodialysis outcomes and comorbidities can have an influence on quality of life, frequency and severity of depression and insomnia in hemodialysis patients. In this cross-sectional study, we evaluated 110 patients who were divided into three groups: on-line hemodiafiltration, high flux hemodialysis and low flux hemodialysis. Mental health was evaluated with Short Form-36 questionnaire, Beck Depression Inventory and Insomnia Severity Index. Other data were collected using Restless Legs Syndrome Rating Scale questionnaire, Index of Coexistent Disease and special questionnaire, which included sociodemographic and clinically related questions. Based on questionnaire, depression was present in 39,1% and insomnia was present in 45% of all patients. Health-related quality of life was better in younger patients, patients with higher educational level, patients on HDF, with effective weekly treatment time over 720 minutes, higher Kt/V and and higher serum albumin. Presence and severity of coexistance disease had negative effect on quality of life. Factor associated with depression was sex, educational status, dialysis modality, effective weekly treatment time, index od coexistent disease, presence of restless legs syndrome. Influence on insomnia was observed by age, educational level, dialysis modality and membrane permeability, effective weekly treatment time, albumin level, index of coexistent disease, presence of ischemic hearth disease and restless legs syndrome. Our data indicates the role of sociodemographic factors, hemodialysis modality, parametars of dialysis process and dialysis outcomes and comorbidities regard to their influence on quality of life, depression and insomnia in hemodialysis patients which is sufficient to justify further research in prospective and longitudinal study design.
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- 2014
174. Tryptamine-Derived Schiff Bases: Potent Antimicrobial Agents and Evaluation of Cytotoxicity, ADME and DNA Binding Properties.
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Marjanović JS, Petrović N, Kosanić M, Košarić J, Mirić A, Milivojević N, Kostić MD, and Divac VM
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Inspired by the fact that the introduction of indole pharmacophore in organic scaffolds could enable interesting pharmacological properties, the series of novel tryptamine-derived Schiff bases was synthetized. Tryptamine was used as a source of indole pattern, as well as an example of biogenic amines which chemical transformations lead to the compounds with prominent biological activities. The obtained results for antimicrobial activity against a range of bacterial and fungal strains and cytotoxic activities have revealed that Schiff base TSB4 combining the tryptamine and p-nitro aryl patterns in the structure showed better antifungal activity at low concentrations than standard drug Fluconazole, while compound TSB6 with molecular scaffold composed from tryptamine and quinoline moieties showed certain cytotoxic effect on HCT-116 cell line with a strongly expressed selectivity about healthy fibroblast cells, MRC-5. For these two selected compounds, additional ADME analysis and DNA interactions were performed. to obtain better insight into their pharmacokinetics and determination of binding mode for DNA molecules. As results suggested, strong binding of examined compounds to CT-DNA was observed, while the ADME screening showed that selected compounds possess suitable physicochemical properties for oral bioavailability and druglikeness., (© 2024 Wiley-VHCA AG, Zurich, Switzerland.)
- Published
- 2024
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175. VALIDATION OF THE BRIEF INTERNATIONAL COGNITIVE ASSESSMENT FOR MULTIPLE SCLEROSIS (BICAMS) IN A LARGE COHORT OF RELAPSING-REMITTING MS PATIENTS.
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Drulović J, Tončev G, Nadj Č, Obradović D, Eraković J, Mesaroš Š, Čukić M, Aleksić D, Andabaka M, Ivanović J, Jovanović A, Kostić M, Marić G, Marković A, Martinović V, Parojčić A, Perić S, Sakalaš L, Suknjaja V, Vesić K, Vojvodić S, Vuković T, Benedict RHB, and Pekmezović T
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- Humans, Reproducibility of Results, Neuropsychological Tests, Cohort Studies, Cognition, Multiple Sclerosis diagnosis
- Abstract
Cognitive impairment is one of the most frequently reported symptoms in persons with multiple sclerosis (MS). The Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS) has been recommended as a standardized international screening and monitoring tool for brief cognitive assessment. The aim of our study was to assess the reliability and validity of the Serbian version of the BICAMS. A total of 500 relapsing-remitting MS (RRMS) patients and 69 age-, gender- and education-matched healthy control (HC) subjects were examined. All participants performed the BICAMS test battery, which includes the oral version of the Symbol Digit Modalities Test (SDMT), California Verbal Learning Test second edition (CVLT-II), and Brief Visuospatial Memory Test Revised (BVMTR). A randomly selected subset of patients were retested one to three weeks after baseline. Statistically significant differences between patients and HCs were evident on the SDMT and BVMTR (p<0.001). HCs had higher CVLT-II scores but this difference did not reach statistical significance (p=0.063). Cognitive impairment, defined as an abnormal test score on ≥1 subtest, was found in 62.9% of MS patients. There were statistically significant correlations between BICAMS scores and age, education, EDSS and disease duration in patient sample. Test-retest reliability was confirmed with Pearson correlation coefficient of 0.70 in all measures. This study supported the reliability and validity of the Serbian BICAMS, although the CVLT-II version tested here lacked sensitivity to detect MS compared to healthy volunteers.
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- 2022
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176. Antimicrobial treatment of Stenotrophomonas maltophilia invasive infections: Systematic review.
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Anđelković MV, Janković SM, Kostić MJ, Živković Zarić RS, Opančina VD, Živić MŽ, Milosavljević MJ, and Pejčić AV
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- Humans, Anti-Bacterial Agents therapeutic use, Gram-Negative Bacterial Infections drug therapy, Gram-Negative Bacterial Infections immunology, Immunocompromised Host immunology, Stenotrophomonas maltophilia immunology
- Abstract
Stenotrophomonas maltophilia can cause serious infections in immunocompromised patients. The aim of this systematic review was to establish what invasive infections in humans are caused by S. maltophilia and to evaluate the optimal choice of antibiotics for their treatment. MEDLINE, EBSCO, SCOPUS, SCINDEKS and GOOGLE SCHOLAR were systematically searched for clinical trials, observational studies, case reports or case series describing invasive infections with S. maltophilia in patients of any age. S. maltophilia may cause invasive infections of various tissues in hospitalized patients. In the great majority of cases it was susceptible to co-trimoxazole, levofloxacin and ceftazidime. In about three fourths of the cases, the treatment was successful, while less than 20% of the patients died. S. maltophilia is increasingly associated with serious invasive infections in hospitalized patients and due to growing trend of resistance to almost all antibiotics requires a careful approach to patients who is harboring this bacterium.
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- 2019
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177. The influence of cobalt(II) and tin(II) chloride on regioselectivity and kinetics of phenylselenocyclization of 6-methyl-hept-5-en-2-ol.
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Divac VM, Kostić MD, and Bugarčić ZM
- Abstract
The reaction of the Δ
4 -alkenols with PhSeX can follow three possible reaction pathways: two pathways lead to the formation of two regioisomeric cyclic ether products through the process of intramolecular cyclization, while the third represents the addition of the reagent to the double bond of an alkenol. As there are relatively few literature data on the kinetics of these reactions, we have chosen 6-methyl-hept-5-en-2-ol as a substrate of interest in order to obtain valuable results that will enable better understanding of the mechanism of phenylselenoetherification reactions. 6-Methyl-hept-5-en-2-ol is a particularly interesting model-substrate due to its substitution pattern of functional groups involved in the cyclization process. In this research, through synthetic and kinetic studies, we aimed to resolve key questions concerning the influence on kinetics, chemo- and regioselectivity of the reagent's counter ion, steric hindrances in substrate functional groups and the presence of additives.- Published
- 2019
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178. Clinical Pharmacokinetics of Second-Generation Triazoles for the Treatment of Invasive Aspergillosis and Candidiasis.
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Jović Z, Janković SM, Ružić Zečević D, Milovanović D, Stefanović S, Folić M, Milovanović J, and Kostić M
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- Animals, Aspergillosis metabolism, Candidiasis metabolism, Drug Interactions physiology, Humans, Voriconazole pharmacokinetics, Voriconazole therapeutic use, Antifungal Agents pharmacokinetics, Antifungal Agents therapeutic use, Aspergillosis drug therapy, Candidiasis drug therapy, Triazoles pharmacokinetics, Triazoles therapeutic use
- Abstract
Second-generation triazoles were developed in response to the quest for more efficacious and safer therapeutic options for the treatment of severe systemic aspergillosis and candidiasis. These agents include voriconazole, posaconazole, isavuconazole, and ravuconazole. The aim of this review was to present and compare the pharmacokinetic characteristics of second-generation triazoles for the treatment of invasive aspergillosis and candidiasis, emphasizing their clinical implications. The MEDLINE, Scopus, EBSCO, Google Scholar, and SCIndeks databases were searched using advanced search options, including the names of second-generation triazoles and pharmacokinetic terms as keywords. The intravenous administration of voriconazole, posaconazole, and isavuconazole results in stable pharmacokinetics of these drugs, with mostly predictable variations influenced by common and usually known factors in routine clinical settings. The high oral bioavailability of isavuconazole and, to some extent, voriconazole makes them suitable for intravenous-to-oral switch strategies. Except for intravenous voriconazole (due to the accumulation of the toxic vehicle hydroxypropyl betadex), dose reduction of second-generation triazoles is not needed in patients with renal failure; patients with hepatic insufficiency require dose reduction only in advanced disease stages. The introduction of therapeutic drug monitoring could aid attempts to optimize the blood concentrations of triazoles and other drugs that are known to or that possibly interact, thus increasing treatment efficacy and safety. There is a need for new studies that are designed to provide useful data on second-generation triazole pharmacokinetics, particularly in special circumstances such as central nervous system and ocular infections, infections in newborns and infants, and in subjects with genetic polymorphisms of metabolizing enzymes.
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- 2019
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179. Antimicrobial synergism and cytotoxic properties of Citrus limon L., Piper nigrum L. and Melaleuca alternifolia (Maiden and Betche) Cheel essential oils.
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Nikolić MM, Jovanović KK, Marković TL, Marković DL, Gligorijević NN, Radulović SS, Kostić M, Glamočlija JM, and Soković MD
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- Anti-Infective Agents administration & dosage, Anti-Infective Agents isolation & purification, Antineoplastic Agents, Phytogenic administration & dosage, Antineoplastic Agents, Phytogenic isolation & purification, Bacteria drug effects, Bacteria isolation & purification, Candida drug effects, Candida isolation & purification, Cell Line, Tumor, Citrus chemistry, Dose-Response Relationship, Drug, Drug Synergism, Gas Chromatography-Mass Spectrometry, Humans, Melaleuca chemistry, Oils, Volatile administration & dosage, Oils, Volatile isolation & purification, Piper nigrum chemistry, Anti-Infective Agents pharmacology, Antineoplastic Agents, Phytogenic pharmacology, Oils, Volatile pharmacology
- Abstract
Objectives: The chemical composition, antimicrobial and synergistic effect, and cytotoxic activity of Citrus limon (lemon), Piper nigrum (green pepper) and Melaleuca alternifoila (tea tree) essential oils (EOs) were investigated., Methods: Chemical analyses of essential oils were tested by GC-FID and GC-MS spectroscopy. The antimicrobial activity assay was conducted using microdilution method against several oral bacteria and Candida spp. originating from the humans with oral disorders. The synergistic antimicrobial activity was evaluated using checkerboard method. The cytotoxicity evaluation of EOs was assessed using MTT test., Key Findings: Limonene (37.5%) and β-pinene (17.9%) were the major compounds in C. limon oil, β-pinene (34.4%), δ-3-carene (19.7%), limonene (18.7%) and α-pinene (10.4%) in P. nigrum oil and terpinen-4-ol (38.6%) and γ-terpinene (21.7%) in M. alternifolia oil. The broad-spectrum antimicrobial activity was achieved by tested three EOs, with C. limon oil being the strongest against bacteria and M. alternifolia oil strongest against fungi. The EOs demonstrated synergism; their combined application revealed an increase in antimicrobial activity. All tested essential oils showed lower cytotoxic activity in comparison with the positive control, and the obtained results confirmed a dose-dependent activity., Conclusions: The results of this study encourage use of tested EOs in development of a novel agent intended for prevention or therapy of corresponding oral disorders., (© 2017 Royal Pharmaceutical Society.)
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- 2017
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180. Inflammatory Bowel Diseases (Crohn´s Disease and Ulcerative Colitis): Cost of Treatment in Serbia and the Implications.
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Kostić M, Djakovic L, Šujić R, Godman B, and Janković SM
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- Adolescent, Adult, Colitis, Ulcerative therapy, Crohn Disease therapy, Delivery of Health Care economics, Delivery of Health Care statistics & numerical data, Female, Financing, Personal economics, Financing, Personal statistics & numerical data, Humans, Male, Middle Aged, Serbia, Surveys and Questionnaires, Young Adult, Colitis, Ulcerative economics, Crohn Disease economics, Health Care Costs statistics & numerical data
- Abstract
Background: Although the costs of treating inflammatory bowel disease (IBD) in developed countries are well established, they remain largely unknown in countries with recent histories of socio-economic transition including Serbia., Objective: To estimate the costs of treatment including the resources used by patients with IBD in Serbia from a societal perspective. This includes both Crohn's disease and ulcerative colitis., Methods: This cost-of-illness study was conducted to identify direct, indirect and out-of-pocket costs of treating patients with IBD in Serbia. Patients with IBD (n = 112) completed a semi-structured questionnaire with data concerning their utilisation of heath-care resources and illness-related expenditures. All costs were calculated in Republic of Serbia dinars (RSD) at a 1-year level (2014) and subsequently converted to Euros. Median values and ranges were reported to avoid potential distortions associated with mean costs., Results: Median total direct costs and total indirect costs per patient per year in patients with Crohn's disease were 192,614.32RSD (€1602.97) and 28,014.00RSD (€233.13) and 142,267.15RSD (€1183.97) and 21,436.00RSD (€178.39), respectively, in patients with ulcerative colitis. In both groups, the greatest component of direct costs was hospitalisation., Conclusions: Costs of IBD in Serbia are lower than in more developed countries for two reasons. These include the fact that expensive biological therapy is currently under-utilised in Serbia and prices of health services are largely controlled by the State at a low level. The under-utilisation of biologicals may change with the advent of biosimilars at increasingly lower prices., Competing Interests: Compliance with Ethical Standards This study was partially funded by Grant No. 175007 given by the Serbian Ministry of Education. The authors Brian Godman, Marina Kostić, Ljiljan Djakovic, Slobodan M Janković and Raša Šujić have no conflict sof interest in regard to this article, although two of the authors (LD and RS) are members of the Association of Patients with Crohn’s Disease and Ulcerative Colitis. Approval from the Scientific Board of the Serbian Association of Patients with Crohn’s disease and Ulcerative Colitis was obtained prior to commencing this study. The study was performed in accordance with the ethical standards of the Declaration of Helsinki. Informed consent was obtained from all individual participants included in the study by the very nature of data collection.
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- 2017
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181. Stigmatization and discrimination of patients with chronic hepatitis C.
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Kostić M, Kocić B, and Tiodorović B
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- Adolescent, Adult, Aged, Chi-Square Distribution, Cross-Sectional Studies, Drug Users psychology, Female, Hepatitis C, Chronic diagnosis, Hepatitis C, Chronic epidemiology, Humans, Linear Models, Male, Marital Status, Middle Aged, Multivariate Analysis, Serbia epidemiology, Socioeconomic Factors, Substance-Related Disorders epidemiology, Substance-Related Disorders psychology, Urban Health, Young Adult, Hepatitis C, Chronic psychology, Prejudice, Public Opinion, Social Stigma, Stereotyping
- Abstract
Background/aim: Chronic hepatitis C (CHC) is often associated with injectable drug users and human immunodeficiency virus coinfection for which there is stigmatization in society. The aim of this study was to identify the presence of stigma and discrimination of patients with CHC, as well as the influence of sociodemographic factors on the occurrence of stigmatization., Methods: A cross-sectional study was performed. Patients with CHC and conducted antiviral therapy completed an anonymous structured questionnaire consisting of sociodemographic questions and Hepatitis C stigma scale., Results: Out of 154 patients 61.7% were male and 72.1% from the city; 59.7% have completed secondary school; 61.7% were employed before the disease while 31.8% after the disease; 45.5% were unsatisfactory with financial situation; 54.5% were married; 37.7% lived with a spouse and children; 86.4% in their own house/apartment; 5.2% of the patients were abandoned by their partners, while 35.7% consumed drugs. A statistical significance of the stigma score was found in those who lived in the city (p = 0.018), unmarried (p = 0.005), abandoned by the partners after the diagnosis of CHC (p < 0.001), drug users (p = 0.002) and those living with parents (p = 0.034). Univariate regression analysis singled out as significant: residence (p = 0.018), living with their parents (p = 0.046), abandonment by a partner (p < 0.001) and drug use (p = 0.002). A multivariate regression model of independent variables singled out abandonment by partners (Beta = 5.158, p = 0.007). Men disagree significantly with the two elements inside stigma [not the same as the others (p = 0.035)] and hurt by the reaction of others (p = 0.047))., Conclusion: The presence of stigma in patients with CHC was proven. The results indicate the need to strengthen anti-stigma programs that will reduce their psychological and social problems and reduce stigmatization in society.
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- 2016
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182. Cost-Effectiveness of Introducing Point-of-Care Test for Detection of Level of Glycogen Phosphorylase in Early Diagnostic Algorithm of Acute Coronary Syndrome.
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Janković SM and Kostić M
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- Cost-Benefit Analysis, Humans, Serbia, Acute Coronary Syndrome diagnosis, Algorithms, Glycogen Phosphorylase analysis, Point-of-Care Systems
- Abstract
Background: The detection of specific biomarkers in the early phase of acute coronary syndrome (ACS) is important for the early diagnosis and appropriate management of patients with ACS., Objectives: To estimate the cost-effectiveness of introducing a diagnostic point-of-care (POC) test for determining the levels of glycogen phosphorylase BB isoform (GPBB) in a standard diagnostic algorithm for the early diagnosis of ACS within the health system of the Republic of Serbia., Methods: The probabilistic decision-tree model was constructed for patients with nontraumatic chest pain comparing the use of standard diagnostic procedure, physical examination, and electrocardiogram monitoring with the use of a diagnostic test for the detection of the levels of specific biomarkers. The perspective of the health care services purchaser (the Republic Institute for Health Insurance, Serbia) was used in the model, and only direct costs were taken into account. The time horizon was set at one treatment episode of ACS, and the discount rate was not included because of the short length of the time horizon., Results: Using the GPBB POC test in comparison with not using it in the early diagnosis of ACS results in a significant reduction in the cost per treatment episode (10,034.48 ± 7,283.80 Serbian dinar [RSD]), increase in the number of survivors per 1000 treatment episodes (16 ± 18), decrease in the number of hospitalizations per 1000 treatment episodes (104 ± 44), and decrease in the number of performed coronarographies per 1000 treatment episodes (22 ± 19). The costs per hospitalization avoided (incremental cost-effectiveness ratio) were -145,887.57 ± 5,271.54 RSD, and the costs per coronarography avoided were -137,295.68 ± 4,681.05 RSD., Conclusions: In the circumstances of limited health resources, reducing hospitalizations and decreasing unnecessary treatments and invasive diagnostic procedures by a GPBB POC test could be an effective way to improve the economic status of other Balkan countries with limited health care budgets., (Copyright © 2016 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.)
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- 2016
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183. Cost effectiveness comparison of dutasteride and finasteride in patients with benign prostatic hyperplasia--The Markov model based on data from Montenegro.
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Dabanović V, Kostić M, and Janković S
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- 5-alpha Reductase Inhibitors therapeutic use, Aged, Aging, Budgets, Dutasteride therapeutic use, Finasteride therapeutic use, Humans, Male, Montenegro, Prostatic Hyperplasia drug therapy, Quality of Life, Treatment Outcome, 5-alpha Reductase Inhibitors economics, Cost-Benefit Analysis economics, Dutasteride economics, Finasteride economics, Markov Chains, Prostatic Hyperplasia economics
- Abstract
Background/aim: Benign prostatic hyperplasia (BPH) is one of the most common disease among males aging 50 years and more. The rise of the prevalence of BPH is related to aging, and since duration of life time period has the tendency of rising the prevalence of BPH will rise as costs of BPH treatment will and its influence on health economic budget. Dutasteride is a new drug similar to finasteride, inhibits enzyme testosterone 5-alpha reductase, diminish symptoms of BPH, reduce risk of the complications and increases quality of life in patients with BPH. But, the use of dutasteride is limited by its high costs. The aim of this study was to compare cost effectiveness of dutasteride and finasteride from the perspective of a purchaser of health care service (Republic Institute for Health Insuranse, Montenegro)., Methods: We constructed a Markov model to compare cost effectivenss of dutasteride and finasteride using data from the available pharmacoeconomic literature and data about socioeconomic sphere actual in Montenegro. A time horizon was estimated to be 20 years, with the duration of 1 year per one cycle. The discount rate was 3%. We performed Monte Carlo simulation for virtual cohort of 1,000 patients with BPH., Results: The total costs for one year treatment of BPH with dutasteride were estimated to be 6,458.00 € which was higher comparing with finasteride which were 6,088.56 €. The gain in quality adjusted life years (QALY) were higher with dutasteride (11.97 QALY) than with finasteride (11.19 QALY). The results of our study indicate that treating BPH with dutasteride comparing to finasteride is a cost effective option since the value of incremental cost-effectiveness ratio (ICER) is 1,245.68 €/QALY which is below estimated threshold (1,350.00 € per one gained year of life)., Conclusion: Dutasteride is a cost effective option for treating BPH comparing to finasteride. The results of this study provide new information for health care decision makers about treatment of BPH in socioeconomic environment which is actual both in Montenegro and other countries with a recent history of socioeconomic transition.
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- 2016
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184. Synthesis, crystal and solution structures and antimicrobial screening of palladium(II) complexes with 2-(phenylselanylmethyl)oxolane and 2-(phenylselanylmethyl)oxane as ligands.
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Bugarčić ZM, Divac VM, Kostić MD, Janković NŽ, Heinemann FW, Radulović NS, and Stojanović-Radić ZZ
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- Crystallography, X-Ray, Humans, Molecular Structure, Anti-Infective Agents chemical synthesis, Anti-Infective Agents chemistry, Anti-Infective Agents pharmacology, Bacteria growth & development, Palladium chemistry
- Abstract
Two novel Pd(II) complexes with 2-(phenylselanylmethyl)oxolane and 2-(phenylselanylmethyl)oxane as ligands were synthesized. The crystal and molecular structure of the complexes has been determined by single crystal X-ray diffraction. It turned out for both complexes that the two ligands are coordinated to Pd via Se atoms in a trans-fashion and the other two trans-positions are occupied by Cl ions. Detailed 1D- and 2D-NMR analyses revealed the existence of equilibrating trans-diastereomeric species differing in the configuration at four chiral centers (selenium and carbon) in the solution of the complexes. A computational study was also undertaken to assess the relative stabilities of the mentioned stereoisomeric species. The antimicrobial properties of the complexes were investigated against a series of human pathogenic bacterial and fungal strains. The complexes were shown to possess promising broad spectrum moderate antimicrobial activity that is more pronounced against fungal organisms. The noted activity could be completely attributed to the Pd(II) center, whereas the ligands probably mediate the transportation of a Pd(II) species across cell membranes., (Copyright © 2014 Elsevier Inc. All rights reserved.)
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- 2015
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185. Cost-Effectiveness Comparison of Fidaxomicin and Vancomycin for Treatment of Clostridium difficile Infection: A Markov Model Based on Data from a South West Balkan Country in Socioeconomic Transition.
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Marković V, Kostić M, Iličković I, and Janković SM
- Abstract
Background: Recent studies have shown that fidaxomicin, a novel antibiotic, can reduce the rate of complications and mortality in patients with colitis induced by Clostridium difficile. Introduction of fidaxomicin in clinical practice is limited by its high costs., Objectives: The purpose of this study was to estimate the cost effectiveness of using fidaxomicin versus vancomycin in patients with colitis induced by C. difficile who did not respond to oral metronidazole., Methods: We constructed a Markov model that was than simulated by Monte-Carlo simulation using 1000 virtual patients with colitis induced by C. difficile. The perspective in our model was institutional. The time horizon was 3 months. Values of transition probabilities and therapy outcomes were estimated from the available literature, the prices of health services were obtained from the Republic Institute for Health Insurance Tariff Book, and the price of fidaxomicin was derived from data gained from the drug manufacturer., Results: The total costs of treating one statistical patient for 3 months with fidaxomicin were higher (48,106.19 ± 118.07 Republic of Serbia dinars [RSD]; 95% confidence interval 47,988.12-48,224.27) than the total costs of treating with vancomycin (25,872.85 ± 41.44 RSD; 95% confidence interval 25,831.41-25,914.29). Our results showed that the treatment of infections induced by C. difficile with fidaxomicin correlated with a lower rate of mortality and with a smaller number of colectomies. The incremental cost-effectiveness ratio of fidaxomicin versus vancomycin for colitis induced by C. difficile per saved life was estimated at 2.97 million RSD and for one avoided colectomy at 10.07 million RSD., Conclusions: Results of our model indicate that fidaxomicin is a cost-effective therapy compared with vancomycin in patients with colitis induced by C. difficile if the outcome is life-year saved. However, if the outcome is the number of avoided colectomies, then fidaxomycin is not a cost-effective option compared with vancomycin., (Copyright © 2014 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
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186. Cost-effectiveness analysis of tocilizumab in combination with methotrexate for rheumatoid arthritis: a Markov model based on data from Serbia, country in socioeconomic transition.
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Kostić M, Jovanović S, Tomović M, Milenković MP, and Janković SM
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- Antibodies, Monoclonal, Humanized therapeutic use, Antirheumatic Agents therapeutic use, Drug Therapy, Combination, Humans, Markov Chains, Methotrexate therapeutic use, Serbia, Socioeconomic Factors, Antibodies, Monoclonal, Humanized economics, Antirheumatic Agents economics, Arthritis, Rheumatoid drug therapy, Cost-Benefit Analysis, Methotrexate economics
- Abstract
Background/aim: Recent studies have shown that biological treatments for rheumatoid arthritis can change the course of rheumatoid arthritis and improve functional ability of patients with rheumatoid arthritis. In spite of this fact, use of biological therapy is still limited by high prices of these medicines, especially in countries in socioeconomic transition. The aim of our study was to compare cost-effectiveness of a combination of tocilizumab and methotrexate with methotrexate alone for rheumatoid arthritis in Serbia, a country in socioeconomic transition., Methods: For the purpose of our study we designed a Markov model using data on therapy efficacy from the available literature, and data on the costs of health states calculated from records of actual patients treated in the Clinical Center Kragujevac, Serbia. The duration of one cycle in our model was set at one month, and the time horizon was 480 months (40 years). The study was done from the social perspective, and all the costs and outcomes were discounted for 3% per year., Results: Treating rheumatoid arthritis with disease-modifying antirheumatic drugs (DMARDs) alone was more cost-effective in comparison with a combination of biologic treatment with tocilizumab and DMARDs. The total costs for treating a patient with DMARDs for one year were on average 261,945.42 RSD, or 2,497.70 Euro and the total costs for treatment with tocilizimab plus DMARDs were on average 1,959,217.44 RSD, or 18,659.20 Euro. However, these results are susceptible to changes in costs and treatment effects of tocilizumab in patients with more severe forms of rheumatoid arthritis., Conclusion: Our results show that the use of tocilizumab for rheumatoid arthrits in economic environment of Serbia is not cost-effective. Use of tocilizumab for treating rheumatoid arthritis can become affordable, if costs of its use become lower. In order to start using expensive biologic medicines in patients in transitional countries, special strategy and pricing policy of international pharmaceutical companies are necessary, which would include calculation of prices of biologic medicines on the basis of local pharmacoeconomic studies.
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- 2014
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187. Cost-effectiveness of four immunomodulatory therapies for relapsing-remitting multiple sclerosis: a Markov model based on data a Balkan country in socioeconomic transition.
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Janković SM, Kostić M, Radosavljević M, Tesić D, Stefanović-Stoimenov N, Stevanović I, Raković S, Aleksić J, Folić M, Aleksić A, Mihajlović I, Biorac N, Borlja J, and Vucković R
- Subjects
- Cost-Benefit Analysis, Drug Costs, Glatiramer Acetate, Humans, Interferon beta-1a, Interferon beta-1b, Markov Chains, Peptides economics, Quality-Adjusted Life Years, Serbia, Adjuvants, Immunologic administration & dosage, Adjuvants, Immunologic economics, Interferon-beta administration & dosage, Interferon-beta economics, Multiple Sclerosis, Relapsing-Remitting drug therapy, Multiple Sclerosis, Relapsing-Remitting economics, Peptides administration & dosage
- Abstract
Background/aim: A cost-effectiveness analyses of immunomodulatory treatments for relapsing-remitting multiple sclerosis (RRMS) in developed countries have shown that any benefit from these drugs is achieved at very high cost. The aim of our study was to compare the cost-effectiveness of five treatment strategies in patients diagnosed with RRMS (symptom management alone and in combination with subcutaneous glatiramer acetate, intramuscular interferon beta-1a, subcutaneous interferon beta-1a, or intramuscular interferon [beta-1b) in a Balkan country in socio-economic transition., Methods: The Markov model was developed based on the literature about effectiveness and on local Serbian cost calculations. The duration of a cycle in the model was set to a month. The baseline time horizon was 480 months (40 years). The societal perspective was used for costs and outcomes, and they were discounted for 3% annually. Monte Carlo micro simulation with 1000 virtual patients was done., Results: Significant gain with immunomodulatory therapy was achieved only in relapse-free years, while the time spent in health states EDSS 0.0-5.5 was longer with symptomatic therapy only, and gains in life years and QALYs were only marginal. One QALY gained costs more than a billion of Serbian dinars (more than 20 million US dollars), making each of the four immunomodulatory therapies cost-ineffective., Conclusion: Our study suggests that immunomodulatory therapy of RRMS in a Balkan country in socioeconomic transition is not cost-effective, regardless of the type of the therapy. Moderate gain in relapse-free years does not translate to gain in QALYs, probably due to adverse effects of immunomodulatory therapy.
- Published
- 2009
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