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Browsing by Author "Damjanov, Nemanja (8503557800)"

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    -174G/C interleukin-6 gene promoter polymorphism predicts therapeutic response to etanercept in rheumatoid arthritis
    (2013)
    Jančić, Ivan (24721867100)
    ;
    Arsenović-Ranin, Nevena (59662809600)
    ;
    Šefik-Bukilica, Mirjana (8118591400)
    ;
    Živojinović, Sladjana (35754184300)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Spasovski, Vesna (26655022200)
    ;
    Srzentić, Sanja (57204289670)
    ;
    Stanković, Biljana (35785023700)
    ;
    Pavlović, Sonja (7006514877)
    To examine whether -174G/C interleukin-6 (IL-6) gene polymorphism, previously reported to correlate with IL-6 level, influences response to etanercept therapy in patients with rheumatoid arthritis. Seventy-seven patients with active RA were studied, at baseline and 6- and 12-month follow-up after etanercept therapy. Treatment response was estimated according to the European League Against Rheumatism response criteria. RA patients were genotyped for -174G/C IL-6 gene polymorphism by the PCR-RFLP method, and influence of genotype at this polymorphism to clinical response to etanercept was assessed. After 12 months of treatment, the percentage of responders (patients who had DAS28 improvement >1.2) was significantly increased in patients carrying the IL-6 -174G/G genotype (95.7 %) compared with those with the G/C (75.6 %) or CC (44.4 %) genotype (p = 0.006 by Chi-square test). No significant difference in the mean values of DAS28 improvement was observed between groups with different genotype. RA patients with an IL-6 -174GG genotype respond to etanercept better than patients with GC or CC genotype. This finding, if confirmed in future studies, suggests that the -174G/C IL-6 polymorphism may be a genetic marker of responsiveness to tumor necrosis factor-alpha (TNF-α) blockers in RA. © 2012 Springer-Verlag Berlin Heidelberg.
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    -174G/C interleukin-6 gene promoter polymorphism predicts therapeutic response to etanercept in rheumatoid arthritis
    (2013)
    Jančić, Ivan (24721867100)
    ;
    Arsenović-Ranin, Nevena (59662809600)
    ;
    Šefik-Bukilica, Mirjana (8118591400)
    ;
    Živojinović, Sladjana (35754184300)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Spasovski, Vesna (26655022200)
    ;
    Srzentić, Sanja (57204289670)
    ;
    Stanković, Biljana (35785023700)
    ;
    Pavlović, Sonja (7006514877)
    To examine whether -174G/C interleukin-6 (IL-6) gene polymorphism, previously reported to correlate with IL-6 level, influences response to etanercept therapy in patients with rheumatoid arthritis. Seventy-seven patients with active RA were studied, at baseline and 6- and 12-month follow-up after etanercept therapy. Treatment response was estimated according to the European League Against Rheumatism response criteria. RA patients were genotyped for -174G/C IL-6 gene polymorphism by the PCR-RFLP method, and influence of genotype at this polymorphism to clinical response to etanercept was assessed. After 12 months of treatment, the percentage of responders (patients who had DAS28 improvement >1.2) was significantly increased in patients carrying the IL-6 -174G/G genotype (95.7 %) compared with those with the G/C (75.6 %) or CC (44.4 %) genotype (p = 0.006 by Chi-square test). No significant difference in the mean values of DAS28 improvement was observed between groups with different genotype. RA patients with an IL-6 -174GG genotype respond to etanercept better than patients with GC or CC genotype. This finding, if confirmed in future studies, suggests that the -174G/C IL-6 polymorphism may be a genetic marker of responsiveness to tumor necrosis factor-alpha (TNF-α) blockers in RA. © 2012 Springer-Verlag Berlin Heidelberg.
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    2019 EULAR points to consider for the assessment of competences in rheumatology specialty training
    (2021)
    Sivera, Francisca (15840570900)
    ;
    Alunno, Alessia (17342226500)
    ;
    Najm, Aurélie (57093944800)
    ;
    Avcin, Tadej (6602605283)
    ;
    Baraliakos, Xenofon (10043334000)
    ;
    Bijlsma, Johannes W (24473033300)
    ;
    Badreh, Sara (57205607659)
    ;
    Burmester, Gerd (35379799100)
    ;
    Cikes, Nada (7003463349)
    ;
    Da Silva, Jose Ap (57203106876)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Dougados, Maxime (35377488600)
    ;
    Dudler, Jean (7004734033)
    ;
    Edwards, Christopher J (55320858500)
    ;
    Iagnocco, Annamaria (6603972277)
    ;
    Lioté, Frédéric (57195959341)
    ;
    Nikiphorou, Elena (35784968200)
    ;
    Van Onna, Marloes (56147255900)
    ;
    Stones, Simon R (57057817600)
    ;
    Vassilopoulos, Dimitrios (35517994100)
    ;
    Haines, Catherine (55755678600)
    ;
    Ramiro, Sofia (36551491700)
    Background and aim Striving for harmonisation of specialty training and excellence of care in rheumatology, the European League Against Rheumatism (EULAR) established a task force to develop points to consider (PtCs) for the assessment of competences during rheumatology specialty training. Methods A systematic literature review on the performance of methods for the assessment of competences in rheumatology specialty training was conducted. This was followed by focus groups in five selected countries to gather information on assessment practices and priorities. Combining the collected evidence with expert opinion, the PtCs were formulated by the multidisciplinary task force, including rheumatologists, medical educationalists, and people with rheumatic and musculoskeletal diseases. The level of agreement (LoA) for each PtC was anonymously voted online. Results Four overarching principles and 10 PtCs were formulated. The overarching principles highlighted the importance of assessments being closely linked to the rheumatology training programme and protecting sufficient time and resources to ensure effective implementation. In the PtCs, two were related to overall assessment strategy (PtCs 1 and 5); three focused on formative assessment and portfolio (PtCs 2-4); three focused on the assessment of knowledge, skills or professionalism (PtCs 6-8); one focused on trainees at risk of failure (PtC 9); and one focused on training the trainers (PtC 10). The LoA (0-10) ranged from 8.75 to 9.9. Conclusion These EULAR PtCs provide European guidance on assessment methods throughout rheumatology training programmes. These can be used to benchmark current practices and to develop future strategies, thereby fostering continuous improvement in rheumatology learning and, ultimately, in patient care. © Author(s) (or their.
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    Publication
    2019 EULAR points to consider for the assessment of competences in rheumatology specialty training
    (2021)
    Sivera, Francisca (15840570900)
    ;
    Alunno, Alessia (17342226500)
    ;
    Najm, Aurélie (57093944800)
    ;
    Avcin, Tadej (6602605283)
    ;
    Baraliakos, Xenofon (10043334000)
    ;
    Bijlsma, Johannes W (24473033300)
    ;
    Badreh, Sara (57205607659)
    ;
    Burmester, Gerd (35379799100)
    ;
    Cikes, Nada (7003463349)
    ;
    Da Silva, Jose Ap (57203106876)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Dougados, Maxime (35377488600)
    ;
    Dudler, Jean (7004734033)
    ;
    Edwards, Christopher J (55320858500)
    ;
    Iagnocco, Annamaria (6603972277)
    ;
    Lioté, Frédéric (57195959341)
    ;
    Nikiphorou, Elena (35784968200)
    ;
    Van Onna, Marloes (56147255900)
    ;
    Stones, Simon R (57057817600)
    ;
    Vassilopoulos, Dimitrios (35517994100)
    ;
    Haines, Catherine (55755678600)
    ;
    Ramiro, Sofia (36551491700)
    Background and aim Striving for harmonisation of specialty training and excellence of care in rheumatology, the European League Against Rheumatism (EULAR) established a task force to develop points to consider (PtCs) for the assessment of competences during rheumatology specialty training. Methods A systematic literature review on the performance of methods for the assessment of competences in rheumatology specialty training was conducted. This was followed by focus groups in five selected countries to gather information on assessment practices and priorities. Combining the collected evidence with expert opinion, the PtCs were formulated by the multidisciplinary task force, including rheumatologists, medical educationalists, and people with rheumatic and musculoskeletal diseases. The level of agreement (LoA) for each PtC was anonymously voted online. Results Four overarching principles and 10 PtCs were formulated. The overarching principles highlighted the importance of assessments being closely linked to the rheumatology training programme and protecting sufficient time and resources to ensure effective implementation. In the PtCs, two were related to overall assessment strategy (PtCs 1 and 5); three focused on formative assessment and portfolio (PtCs 2-4); three focused on the assessment of knowledge, skills or professionalism (PtCs 6-8); one focused on trainees at risk of failure (PtC 9); and one focused on training the trainers (PtC 10). The LoA (0-10) ranged from 8.75 to 9.9. Conclusion These EULAR PtCs provide European guidance on assessment methods throughout rheumatology training programmes. These can be used to benchmark current practices and to develop future strategies, thereby fostering continuous improvement in rheumatology learning and, ultimately, in patient care. © Author(s) (or their.
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    Activity and expression of dipeptidyl peptidase IV on peripheral blood mononuclear cells in patients with early steroid and disease modifying antirheumatic drugs naïve rheumatoid arthritis
    (2017)
    Grujic, Milica (57192164038)
    ;
    Matic, Ivana Z. (36572349500)
    ;
    Crnogorac, Marija Djordjic (57193949676)
    ;
    Velickovic, Ana Damjanovic (6603001396)
    ;
    Kolundzija, Branka (55319359400)
    ;
    Cordero, Oscar J. (7004437937)
    ;
    Juranic, Zorica (7003932917)
    ;
    Prodanovic, Slavica (6506202031)
    ;
    Zlatanovic, Maja (7004164497)
    ;
    Babic, Dragan (56197715200)
    ;
    Damjanov, Nemanja (8503557800)
    Dipeptidyl peptidase IV (DPPIV/CD26) plays an important role in T cell activation and immune regulation, however the role of this enzyme in early rheumatoid arthritis (eRA) has not been clearly defined. The aim of this study was to determine the serum activity of DPPIV, its expression on peripheral blood mononuclear cells (PBMC) and to examine possible correlations with disease activity (DAS28) in untreated patients with eRA. The study included 50 patients newly diagnosed with RA, who had not received any corticosteroid or disease modifying antirheumatic drugs (DMARD) therapy and whose conventional radiographs of hands and feet showed no structural damage. The control group consisted of 40 healthy volunteers. Also, 30 patients with chronic RA (cRA) were examined. The serum activity of DPPIV was determined by the direct photometric method, while expression of CD26 on PBMC was determined using flow cytometry. Decreased DPPIV serum activity was detected in patients with eRA and cRA compared to the control group (p=0.024, p<0.0001, respectively). Although, the percentage of overall CD26+ white blood cells (WBC) was significantly decreased in eRA patients (p<0.001), the percentage of CD26+ lymphocytes and monocytes and mean fluorescence intensity of CD26 on these cells in eRA patients showed no significant difference compared to healthy volunteers. DAS28 showed no significant correlation with CD26 expression or DPPIV serum activity, but a significant inverse correlation between the duration of symptoms and DPPIV serum activity was observed. Our results show that a decrease in DPPIV serum activity, but not CD26 expression, is present in an early stage of rheumatoid arthritis. © 2017 2017 Walter de Gruyter GmbH, Berlin/Boston.
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    Activity and expression of dipeptidyl peptidase IV on peripheral blood mononuclear cells in patients with early steroid and disease modifying antirheumatic drugs naïve rheumatoid arthritis
    (2017)
    Grujic, Milica (57192164038)
    ;
    Matic, Ivana Z. (36572349500)
    ;
    Crnogorac, Marija Djordjic (57193949676)
    ;
    Velickovic, Ana Damjanovic (6603001396)
    ;
    Kolundzija, Branka (55319359400)
    ;
    Cordero, Oscar J. (7004437937)
    ;
    Juranic, Zorica (7003932917)
    ;
    Prodanovic, Slavica (6506202031)
    ;
    Zlatanovic, Maja (7004164497)
    ;
    Babic, Dragan (56197715200)
    ;
    Damjanov, Nemanja (8503557800)
    Dipeptidyl peptidase IV (DPPIV/CD26) plays an important role in T cell activation and immune regulation, however the role of this enzyme in early rheumatoid arthritis (eRA) has not been clearly defined. The aim of this study was to determine the serum activity of DPPIV, its expression on peripheral blood mononuclear cells (PBMC) and to examine possible correlations with disease activity (DAS28) in untreated patients with eRA. The study included 50 patients newly diagnosed with RA, who had not received any corticosteroid or disease modifying antirheumatic drugs (DMARD) therapy and whose conventional radiographs of hands and feet showed no structural damage. The control group consisted of 40 healthy volunteers. Also, 30 patients with chronic RA (cRA) were examined. The serum activity of DPPIV was determined by the direct photometric method, while expression of CD26 on PBMC was determined using flow cytometry. Decreased DPPIV serum activity was detected in patients with eRA and cRA compared to the control group (p=0.024, p<0.0001, respectively). Although, the percentage of overall CD26+ white blood cells (WBC) was significantly decreased in eRA patients (p<0.001), the percentage of CD26+ lymphocytes and monocytes and mean fluorescence intensity of CD26 on these cells in eRA patients showed no significant difference compared to healthy volunteers. DAS28 showed no significant correlation with CD26 expression or DPPIV serum activity, but a significant inverse correlation between the duration of symptoms and DPPIV serum activity was observed. Our results show that a decrease in DPPIV serum activity, but not CD26 expression, is present in an early stage of rheumatoid arthritis. © 2017 2017 Walter de Gruyter GmbH, Berlin/Boston.
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    An OMERACT reliability exercise of inflammatory and structural abnormalities in patients with knee osteoarthritis using ultrasound assessment
    (2016)
    Bruyn, George A. W. (7006486448)
    ;
    Naredo, Esperanza (6602827091)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Bachta, Artur (9635500400)
    ;
    Baudoin, Paul (56615335900)
    ;
    Hammer, Hilde Berner (7102733905)
    ;
    Lamers-Karnebeek, Femke B. G. (56020036000)
    ;
    Parera, Ingrid Moller (12142507400)
    ;
    Richards, Bethan (19737986700)
    ;
    Taylor, Mihaela (14826071200)
    ;
    Ben-Artzi, Ami (55232661600)
    ;
    D'Agostino, Maria-Antonietta (26643055600)
    ;
    Garrido, Jesus (7202779769)
    ;
    Iagnocco, Annamaria (6603972277)
    Objective To assess whether ultrasonography (US) is reliable for the evaluation of inflammatory and structural abnormalities in patients with knee osteoarthritis (OA). Methods Thirteen patients with early knee OA were examined by 11 experienced sonographers during 2 days. Dichotomous and semiquantitative scoring was performed on synovitis characteristics in various aspects of the knee joint. Semiquantitative scoring was done of osteophytes at the medial and lateral femorotibial joint space or cartilage damage of the trochlea and on medial meniscal damage bilaterally. Intra-and interobserver reliability were computed by use of unweighted and weighted ê coefficients. Results Intra-and interobserver reliability scores were moderate to good for synovitis (mean κ 0.67 and 0.52, respectively) as well as moderate to good for the global synovitis (0.70 and 0.50, respectively). Mean intra-and interobserver reliability κ for cartilage damage, medial meniscal damage and osteophytes ranged from fair to good (0.55 and 0.34, 0.75 and 0.56, 0.73 and 0.60, respectively). Conclusions Using a standardised protocol, dichotomous and semiquantitative US scoring of pathological changes in knee OA can be reliable.
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    An OMERACT reliability exercise of inflammatory and structural abnormalities in patients with knee osteoarthritis using ultrasound assessment
    (2016)
    Bruyn, George A. W. (7006486448)
    ;
    Naredo, Esperanza (6602827091)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Bachta, Artur (9635500400)
    ;
    Baudoin, Paul (56615335900)
    ;
    Hammer, Hilde Berner (7102733905)
    ;
    Lamers-Karnebeek, Femke B. G. (56020036000)
    ;
    Parera, Ingrid Moller (12142507400)
    ;
    Richards, Bethan (19737986700)
    ;
    Taylor, Mihaela (14826071200)
    ;
    Ben-Artzi, Ami (55232661600)
    ;
    D'Agostino, Maria-Antonietta (26643055600)
    ;
    Garrido, Jesus (7202779769)
    ;
    Iagnocco, Annamaria (6603972277)
    Objective To assess whether ultrasonography (US) is reliable for the evaluation of inflammatory and structural abnormalities in patients with knee osteoarthritis (OA). Methods Thirteen patients with early knee OA were examined by 11 experienced sonographers during 2 days. Dichotomous and semiquantitative scoring was performed on synovitis characteristics in various aspects of the knee joint. Semiquantitative scoring was done of osteophytes at the medial and lateral femorotibial joint space or cartilage damage of the trochlea and on medial meniscal damage bilaterally. Intra-and interobserver reliability were computed by use of unweighted and weighted ê coefficients. Results Intra-and interobserver reliability scores were moderate to good for synovitis (mean κ 0.67 and 0.52, respectively) as well as moderate to good for the global synovitis (0.70 and 0.50, respectively). Mean intra-and interobserver reliability κ for cartilage damage, medial meniscal damage and osteophytes ranged from fair to good (0.55 and 0.34, 0.75 and 0.56, 0.73 and 0.60, respectively). Conclusions Using a standardised protocol, dichotomous and semiquantitative US scoring of pathological changes in knee OA can be reliable.
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    Anatomical and ultrasound navigation of intra joint injections
    (2019)
    Knyazeva, Larisa A. (57196043738)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Knyazeva, Larisa I. (58317546800)
    ;
    Khardikova, Elena M. (57201025660)
    ;
    Meshcherina, Natalia S. (56880413600)
    ;
    Stepchenko, Marina A. (57201022029)
    ;
    Goryainov, Igor I. (6604087176)
    Optimization of joint syndrome treatment meth-ods, including those based on the intra-and peri-articular drug administration and invasive diagnostic techniques, remains high on the agenda of modern clinical rheumatology. The implementation and quite widely spread use of ultrasono-graphic visualization has been an impetus to the development of this type of treatment for joint diseases. Without any doubt, the quality of intraar-ticular injection performance mainly depends on the professional level of the specialist and his/hers procedural skills. However, here comes a predict-able question: are these conditions sufficient to enable maximal precision, safety, and efficacy of intraarticular interventions? From this perspective, it is interesting to study the possibilities to improve the results of local treatments for the joint syndrome by means of the ultrasound navigation technique. Based on data presented in the literature review, we compared a “blind” invasive treatment method to the ultrasound navigation-guid-ed intra-and periarticular interventions in patients with skeletomuscular and connective tissue disor-ders. The authors of the studies published point to higher safety, efficacy, procedure precision, and diagnostic quality of the information obtained by the ultrasound navigation. Its important advan-tages include wider possibilities and availability of this method in outpatient settings, due to its rath-er low costs and patients' safety. The information from the current literature review reflects an ini-tial stage of studies on the evaluation of the role, significance, determination of potential of the ultrasound navigation to enhance the quality of diagnosis and invasive treatment in patients with joint syndromes of various origins and to minimize adverse effects. © 2019, Moscow Regional Research and Clinical Institute. All rights reserved.
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    Anatomical and ultrasound navigation of intra joint injections
    (2019)
    Knyazeva, Larisa A. (57196043738)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Knyazeva, Larisa I. (58317546800)
    ;
    Khardikova, Elena M. (57201025660)
    ;
    Meshcherina, Natalia S. (56880413600)
    ;
    Stepchenko, Marina A. (57201022029)
    ;
    Goryainov, Igor I. (6604087176)
    Optimization of joint syndrome treatment meth-ods, including those based on the intra-and peri-articular drug administration and invasive diagnostic techniques, remains high on the agenda of modern clinical rheumatology. The implementation and quite widely spread use of ultrasono-graphic visualization has been an impetus to the development of this type of treatment for joint diseases. Without any doubt, the quality of intraar-ticular injection performance mainly depends on the professional level of the specialist and his/hers procedural skills. However, here comes a predict-able question: are these conditions sufficient to enable maximal precision, safety, and efficacy of intraarticular interventions? From this perspective, it is interesting to study the possibilities to improve the results of local treatments for the joint syndrome by means of the ultrasound navigation technique. Based on data presented in the literature review, we compared a “blind” invasive treatment method to the ultrasound navigation-guid-ed intra-and periarticular interventions in patients with skeletomuscular and connective tissue disor-ders. The authors of the studies published point to higher safety, efficacy, procedure precision, and diagnostic quality of the information obtained by the ultrasound navigation. Its important advan-tages include wider possibilities and availability of this method in outpatient settings, due to its rath-er low costs and patients' safety. The information from the current literature review reflects an ini-tial stage of studies on the evaluation of the role, significance, determination of potential of the ultrasound navigation to enhance the quality of diagnosis and invasive treatment in patients with joint syndromes of various origins and to minimize adverse effects. © 2019, Moscow Regional Research and Clinical Institute. All rights reserved.
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    Assessment of clinical efficacy and safety in a randomized double-blind study of etanercept and sulfasalazine in patients with ankylosing spondylitis from Eastern/Central Europe, Latin America, and Asia
    (2016)
    Damjanov, Nemanja (8503557800)
    ;
    Shehhi, Waleed Al (57163652000)
    ;
    Huang, Feng (35490623100)
    ;
    Kotak, Sameer (11140595900)
    ;
    Burgos-Vargas, Ruben (56000827800)
    ;
    Shirazy, Khalid (57046057300)
    ;
    Bananis, Eustratios (6507164045)
    ;
    Szumski, Annette (55248109100)
    ;
    Llamado, Lyndon J. Q. (9943060600)
    ;
    Mahgoub, Ehab (56287402600)
    Despite the demonstrated efficacy of etanercept for the treatment of ankylosing spondylitis (AS), sulfasalazine is often prescribed, especially in countries with limited access to biologic agents. The objective of this subset analysis of the ASCEND trial was to compare the efficacy of etanercept and sulfasalazine in treating patients with AS from Asia, Eastern/Central Europe, and Latin America. A total of 287 patients, 190 receiving etanercept 50 mg once weekly and 97 receiving sulfasalazine 3 g daily, from eight countries were included in this subset analysis. Differences in disease activity and patient-reported outcomes assessing health-related quality-of-life (HRQoL) parameters in response to treatment were analyzed using the Cochran–Mantel–Haenszel test for categorical efficacy endpoints and analysis of covariance model for continuous variables. At week 16, a significantly greater proportion of patients receiving etanercept achieved ASAS20 (79.0 %) compared with patients receiving sulfasalazine (61.9 %; p = 0.002). At week 16, treatment with etanercept also resulted in significantly better responses than sulfasalazine for ASAS40 (64.7 vs. 35.1 %; p < 0.001), ASAS5/6 (48.1 vs. 26.3 %; p < 0.001), proportion of patients achieving 50 % response in Bath AS Disease Activity Index (65.8 vs. 42.3 %; p < 0.001), partial remission (35.3 vs. 17.5 %; p = 0.002), and all HRQoL parameters. Both treatments were well tolerated. Etanercept was significantly more effective than sulfasalazine in the treatment of patients with AS from Asia, Central/Eastern Europe, and Latin America. © 2016, Springer-Verlag Berlin Heidelberg.
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    Assessment of clinical efficacy and safety in a randomized double-blind study of etanercept and sulfasalazine in patients with ankylosing spondylitis from Eastern/Central Europe, Latin America, and Asia
    (2016)
    Damjanov, Nemanja (8503557800)
    ;
    Shehhi, Waleed Al (57163652000)
    ;
    Huang, Feng (35490623100)
    ;
    Kotak, Sameer (11140595900)
    ;
    Burgos-Vargas, Ruben (56000827800)
    ;
    Shirazy, Khalid (57046057300)
    ;
    Bananis, Eustratios (6507164045)
    ;
    Szumski, Annette (55248109100)
    ;
    Llamado, Lyndon J. Q. (9943060600)
    ;
    Mahgoub, Ehab (56287402600)
    Despite the demonstrated efficacy of etanercept for the treatment of ankylosing spondylitis (AS), sulfasalazine is often prescribed, especially in countries with limited access to biologic agents. The objective of this subset analysis of the ASCEND trial was to compare the efficacy of etanercept and sulfasalazine in treating patients with AS from Asia, Eastern/Central Europe, and Latin America. A total of 287 patients, 190 receiving etanercept 50 mg once weekly and 97 receiving sulfasalazine 3 g daily, from eight countries were included in this subset analysis. Differences in disease activity and patient-reported outcomes assessing health-related quality-of-life (HRQoL) parameters in response to treatment were analyzed using the Cochran–Mantel–Haenszel test for categorical efficacy endpoints and analysis of covariance model for continuous variables. At week 16, a significantly greater proportion of patients receiving etanercept achieved ASAS20 (79.0 %) compared with patients receiving sulfasalazine (61.9 %; p = 0.002). At week 16, treatment with etanercept also resulted in significantly better responses than sulfasalazine for ASAS40 (64.7 vs. 35.1 %; p < 0.001), ASAS5/6 (48.1 vs. 26.3 %; p < 0.001), proportion of patients achieving 50 % response in Bath AS Disease Activity Index (65.8 vs. 42.3 %; p < 0.001), partial remission (35.3 vs. 17.5 %; p = 0.002), and all HRQoL parameters. Both treatments were well tolerated. Etanercept was significantly more effective than sulfasalazine in the treatment of patients with AS from Asia, Central/Eastern Europe, and Latin America. © 2016, Springer-Verlag Berlin Heidelberg.
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    Association between the -174 C/G polymorphism in the interleukin-6 (IL-6) gene and gastrointestinal involvement in patients with systemic sclerosis
    (2018)
    Zekovic, Ana (57193403349)
    ;
    Vreca, Misa (57095923100)
    ;
    Spasovski, Vesna (26655022200)
    ;
    Andjelkovic, Marina (57197728167)
    ;
    Pavlovic, Sonja (7006514877)
    ;
    Damjanov, Nemanja (8503557800)
    Genetic predisposition to systemic sclerosis (SSc) has still not been fully revealed. Interleukin-6 (IL-6) is a mediator of T cell proliferation and fibrotic events in SSc. Polymorphisms in the IL-6 are found to be important in susceptibility to development of SSc. We aimed to assess the frequency of -174 C/G of IL-6 gene polymorphism in SSc patients and healthy controls, as well as correlation with disease manifestations. In the case-control study, 102 patients with SSc and 93 controls were included. PCR-RFLP method was performed for genotyping promotor variants -174 C/G of IL-6 gene. The expression level of IL-6 was determined by qRT-PCR on subset of 50 patients and 13 healthy controls with different IL-6 genotypes. We used UCLA GIT 2.0 questionnaire to assess gastrointestinal involvement in SSc patients. The expression level of IL-6 gene was significantly higher in patients with SSc in comparison with healthy controls (p < 0.05). Carriers of C-allele of IL-6 gene compared to those with G allele, showed higher expression of IL-6 gene (95.8 vs. 41.2, p < 0.05), higher GIT total score (0.85 vs. 0.5, p < 0.05) and higher distension scale score (1.4 ± 0.9 vs. 0.78 ± 0.8, p = 0.05). No significant differences in genotype distribution and allele frequency were observed between patients and controls. The expression of IL6 gene varies significantly during the course of SSc. The IL-6 gene variant -174 C/G (presence of C-allele) is associated with higher IL-6 gene expression and greater GIT impairment in patients with SSc. © 2018, International League of Associations for Rheumatology (ILAR).
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    Association of dihydrofolate reductase (DHFR) -317AA genotype with poor response to methotrexate in patients with rheumatoid arthritis
    (2012)
    Milic, Vera (24281704100)
    ;
    Jekic, Biljana (6603561846)
    ;
    Lukovic, Ljiljana (6603898552)
    ;
    Bunjevacki, Vera (6506110754)
    ;
    Milasin, Jelena (6603015594)
    ;
    Novakovic, Ivana (6603235567)
    ;
    Damnjanovic, Tatjana (13008423100)
    ;
    Popovic, Branka (7006225668)
    ;
    Maksimovic, Nela (36461365500)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Radunovic, Goran (13402761800)
    ;
    Pejnovic, Nada (6701507255)
    ;
    Krajinovic, Maja (7004106736)
    Objectives: Identifying genetic predictors of methotrexate (MTX) treatment response in patients with rheumatoid arthritis (RA) may have great importance for optimising drug doses required for clinical benefit without toxicity. In a group of 125 RA patients treated with MTX we investigated whether selected polymorphisms in genes relevant for MTX action (aminoimidazole-4-carboxiamide ribonucleotide transformylase, ATIC, and dihydrofolate reductase, DHFR) modulate disease activity and/or have impact on therapy side effects. Methods: The efficacy of treatment was estimated both by the disease activity score in 28 joints (DAS28), based on EULAR criteria, and relative DAS28 (rDAS28) score. Adverse drug events (ADEs) were also recorded. RA patients were genotyped using the PCR-RFLP method, followed by an association study between ATIC -129T>G, DHFR -216T>C and DHFR -317A>G polymorphisms and the efficacy and toxicity of MTX. Results: According to the EULAR response criteria, 96 RA patients (76.8%) were classified as responders (good/moderate response) and 29 (23.2%) as non-responders (poor response). rDAS28 values ranged from -0.01 to 0.80 (mean value 0.31±0.19). Among 125 patients enrolled in this study 39 experienced at least one side effect. The DHFR -317AA genotype was associated with the less favourable response (reduction in rDAS28 score, p=0.05). None of the analysed polymorphisms was associated with MTX toxicity. Conclusion: RA patients with DHFR-317AA genotype had less favourable response to MTX Further studies in larger patient populations are necessary to confirm the relationship between the analysed polymorphisms and MTX treatment response. © Clinical and Experimental Rheumatology 2012.
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    Association of dihydrofolate reductase (DHFR) -317AA genotype with poor response to methotrexate in patients with rheumatoid arthritis
    (2012)
    Milic, Vera (24281704100)
    ;
    Jekic, Biljana (6603561846)
    ;
    Lukovic, Ljiljana (6603898552)
    ;
    Bunjevacki, Vera (6506110754)
    ;
    Milasin, Jelena (6603015594)
    ;
    Novakovic, Ivana (6603235567)
    ;
    Damnjanovic, Tatjana (13008423100)
    ;
    Popovic, Branka (7006225668)
    ;
    Maksimovic, Nela (36461365500)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Radunovic, Goran (13402761800)
    ;
    Pejnovic, Nada (6701507255)
    ;
    Krajinovic, Maja (7004106736)
    Objectives: Identifying genetic predictors of methotrexate (MTX) treatment response in patients with rheumatoid arthritis (RA) may have great importance for optimising drug doses required for clinical benefit without toxicity. In a group of 125 RA patients treated with MTX we investigated whether selected polymorphisms in genes relevant for MTX action (aminoimidazole-4-carboxiamide ribonucleotide transformylase, ATIC, and dihydrofolate reductase, DHFR) modulate disease activity and/or have impact on therapy side effects. Methods: The efficacy of treatment was estimated both by the disease activity score in 28 joints (DAS28), based on EULAR criteria, and relative DAS28 (rDAS28) score. Adverse drug events (ADEs) were also recorded. RA patients were genotyped using the PCR-RFLP method, followed by an association study between ATIC -129T>G, DHFR -216T>C and DHFR -317A>G polymorphisms and the efficacy and toxicity of MTX. Results: According to the EULAR response criteria, 96 RA patients (76.8%) were classified as responders (good/moderate response) and 29 (23.2%) as non-responders (poor response). rDAS28 values ranged from -0.01 to 0.80 (mean value 0.31±0.19). Among 125 patients enrolled in this study 39 experienced at least one side effect. The DHFR -317AA genotype was associated with the less favourable response (reduction in rDAS28 score, p=0.05). None of the analysed polymorphisms was associated with MTX toxicity. Conclusion: RA patients with DHFR-317AA genotype had less favourable response to MTX Further studies in larger patient populations are necessary to confirm the relationship between the analysed polymorphisms and MTX treatment response. © Clinical and Experimental Rheumatology 2012.
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    Association of the TYMS 3G/3G genotype with poor response and GGH 354GG genotype with the bone marrow toxicity of the methotrexate in RA patients
    (2013)
    Jekic, Biljana (6603561846)
    ;
    Lukovic, Ljiljana (6603898552)
    ;
    Bunjevacki, Vera (6506110754)
    ;
    Milic, Vera (24281704100)
    ;
    Novakovic, Ivana (6603235567)
    ;
    Damnjanovic, Tatjana (13008423100)
    ;
    Milasin, Jelena (6603015594)
    ;
    Popovic, Branka (7006225668)
    ;
    Maksimovic, Nela (36461365500)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Radunovic, Goran (13402761800)
    ;
    Kovacevic, Ljiljana (54882497700)
    ;
    Krajinovic, Maja (7004106736)
    Purpose: Gamma-glutamyl hydrolase (GGH), cyclin D1 (CCND1) and thymidylate synthase (TS) genes encode enzymes that are involved in methotrexate (MTX) action. In a group of 184 RA patients treated with MTX, we have investigated whether selected polymorphisms in these genes modulate MTX efficacy and/or have impact on adverse drug effects (ADEs). Methods: The efficacy of the MTX therapy has been estimated using the disease activity score in 28 joints (DAS28-ESR) based on EULAR criteria and relative DAS28 values (rDAS28). All adverse drug events were recorded. Patients were genotyped for selected polymorphisms of the GGH (-354 G > T and 452 C > T), CCND1 (870 A > G) and TYMS (variable number of tandem repeats, VNTR, and G to C substitution of triple repeat, 3R allele) gene. Association studies have been performed between obtained genotypes and the efficacy and toxicity of MTX. Results: According to the EULAR response criteria, 146 RA patients (79.3 %) were classified as responders (good/moderate response) and 38 (20.7 %) as non-responders (poor response). Higher frequency of the TYMS 3 G/3 G genotype has been found among non-responders as compared to individuals with remaining genotypes (p = 0.02). ADEs were recorded in 53 patients. Among those patients eight experienced bone marrow toxicity, all of them carried GGH -354GG genotype (p = 0.003). No other significant association were observed. Conclusion: The 3 G/3 G genotype of the TYMS gene may indicate predisposition of poor response to MTX and GG genotype of GGH -354 T > G polymorphism may have high predictive value for myelosuppression in RA patients. © 2012 Springer-Verlag.
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    Association of the TYMS 3G/3G genotype with poor response and GGH 354GG genotype with the bone marrow toxicity of the methotrexate in RA patients
    (2013)
    Jekic, Biljana (6603561846)
    ;
    Lukovic, Ljiljana (6603898552)
    ;
    Bunjevacki, Vera (6506110754)
    ;
    Milic, Vera (24281704100)
    ;
    Novakovic, Ivana (6603235567)
    ;
    Damnjanovic, Tatjana (13008423100)
    ;
    Milasin, Jelena (6603015594)
    ;
    Popovic, Branka (7006225668)
    ;
    Maksimovic, Nela (36461365500)
    ;
    Damjanov, Nemanja (8503557800)
    ;
    Radunovic, Goran (13402761800)
    ;
    Kovacevic, Ljiljana (54882497700)
    ;
    Krajinovic, Maja (7004106736)
    Purpose: Gamma-glutamyl hydrolase (GGH), cyclin D1 (CCND1) and thymidylate synthase (TS) genes encode enzymes that are involved in methotrexate (MTX) action. In a group of 184 RA patients treated with MTX, we have investigated whether selected polymorphisms in these genes modulate MTX efficacy and/or have impact on adverse drug effects (ADEs). Methods: The efficacy of the MTX therapy has been estimated using the disease activity score in 28 joints (DAS28-ESR) based on EULAR criteria and relative DAS28 values (rDAS28). All adverse drug events were recorded. Patients were genotyped for selected polymorphisms of the GGH (-354 G > T and 452 C > T), CCND1 (870 A > G) and TYMS (variable number of tandem repeats, VNTR, and G to C substitution of triple repeat, 3R allele) gene. Association studies have been performed between obtained genotypes and the efficacy and toxicity of MTX. Results: According to the EULAR response criteria, 146 RA patients (79.3 %) were classified as responders (good/moderate response) and 38 (20.7 %) as non-responders (poor response). Higher frequency of the TYMS 3 G/3 G genotype has been found among non-responders as compared to individuals with remaining genotypes (p = 0.02). ADEs were recorded in 53 patients. Among those patients eight experienced bone marrow toxicity, all of them carried GGH -354GG genotype (p = 0.003). No other significant association were observed. Conclusion: The 3 G/3 G genotype of the TYMS gene may indicate predisposition of poor response to MTX and GG genotype of GGH -354 T > G polymorphism may have high predictive value for myelosuppression in RA patients. © 2012 Springer-Verlag.
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    Biologics, cardiovascular effects and cancer
    (2014)
    Damjanov, Nemanja (8503557800)
    ;
    Nurmohamed, Michael T. (7004233066)
    ;
    Szekanecz, Zoltán (7003687787)
    Rheumatoid arthritis (RA) is associated with increased cardiovascular risk. Treatment with tumor necrosis factor (TNF)-inhibitors leads to about a 50% reduction in the first cardiovascular event. TNF-inhibitors could transiently improve flow-mediated vasodilation and improve carotid intima-media thickness (ccIMT) during the treatment of RA. Treatment with TNF-inhibitors is associated with an increased total cholesterol (TC) and HDL-cholesterol (HDLc) level, without sustained change of the atherogenic index. The overall cancer risk in RA patients is comparable to that of the general population, but patients with RA slightly more often have lymphomas and lung tumors, and less often have colorectal and breast tumors in comparison to the general population. In randomized controlled trials (RCT) TNF-inhibitors did not increase the risk of solid malignancies, except for non-melanoma skin cancer (risk doubled compared to control treatment). Meta-analysis of registries and long-term extension studies showed no increased risk for total malignancies as well as for non-melanoma skin cancer when comparing TNF-inhibitors and the classical disease modifying anti-rheumatic drugs (DMARDs) treatment. © 2014 Damjanov et al.; licensee BioMed Central Ltd.
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    Capillaroscopy as a prognostic tool for the development of connective tissue disease in patients with Raynaud's phenomenon.
    (2010)
    Damjanov, Nemanja (8503557800)
    ;
    Pavlov-Dolijanović, Slavica (8452470400)
    ;
    Zlatanović, Maja (7004164497)
    [No abstract available]
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    Cardiac mechanics and heart rate variability in patients with systemic sclerosis: the association that we should not miss
    (2017)
    Zlatanovic, Maja (7004164497)
    ;
    Tadic, Marijana (36455305000)
    ;
    Celic, Vera (57132602400)
    ;
    Ivanovic, Branislava (24169010000)
    ;
    Stevanovic, Ana (57190342473)
    ;
    Damjanov, Nemanja (8503557800)
    We aimed to determine left ventricular (LV) and right ventricular (RV) structure, function and mechanics, as well as heart rate variability (HRV), and their relationship, in patients with systemic sclerosis (SSc). The study included 41 SSc patients and 30 age-matched healthy volunteers. All the patients underwent clinical examination, serological tests, pulmonary function testing, 24-h Holter monitoring and complete two-dimensional echocardiography including strain analysis. The parameters of LV structure (interventricular septum thickness and LV mass index) and RV structure (RV wall thickness) were significantly higher in SSc patients. LV and RV diastolic function (estimated by mitral and tricuspid E/e′ ratio) was significantly impaired in SSc group comparing with the healthy controls. LV and RV longitudinal function was significantly deteriorated in SSc patients. LV circumferential strain was also significantly lower in SSc group, whereas LV radial strain was similar between the observed groups. All parameters of time and frequency domain of HRV were decreased in SSc patients. LV and RV cardiac remodeling parameters, particularly diastolic function and longitudinal strain, were associated with HRV indices without regard to the main demographic or the clinical and echocardiographic characteristics. Rodnan Skin Score was also independently associated with biventricular cardiac remodeling in SSc patients. LV and RV structure, function and mechanics, as well as autonomic nervous function, were significantly impaired in SSc patients. There is the significant association between biventricular cardiac remodeling and autonomic function in these patients, which could be useful for their everyday clinical assessment. © 2016, Springer-Verlag Berlin Heidelberg.
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