Browsing by Author "Bojović, Ksenija (6505585757)"

Introduction The triple therapy which consists of one of the protease inhibitor plus pegylated interferon and ribavirin (P/R) is the standard of care for the treatment of chronic hepatitis C virus (HCV) genotype 1(G1) infection both in treatment-naive and experienced patients. Objective The aim of this study was to analyze the efficacy and tolerability of this regime in hospital practice in Serbia. Methods From July 2012 to October 2012, 20 previously treated patients with advanced fibrosis and HCV G1 infection were included in the triple antiviral regimen in six referral centers in Serbia. All patients were treated with response guide therapy (RGT) regime according to the boceprevir treatment protocol. During the 4-week lead-in period all patients received peginterferon plus ribavirin. After the lead-in period boceprevir was added in the dosage of 800 mg three times a day orally. The subsequent treatment varied according to virologic response and fibrosis. During the therapy HCV RNA level was measured at week 4, 8, 12, 24 of the treatment for the assessment of virologic response profile. All patients who completed therapy were assessed at the end of the treatment and at the end of an additional 24-week treatment-free period for a sustained virologic response (SVR). Results The total of 20 patients with advanced fibrosis was treated. Among patients with an undetectable HCV RNA level at week 8 the rate of SVR was 100%. No patient with decrease in the HCV RNA level <1 log 10 IU/ml at treatment week 4 achieved SVR. The overall rate of SVR was 55%. The safety profile of the treatment regimen was good. Anemia was reported in 25% of patients. There was no life-threatening treatment adverse event. Conclusion Boceprevir in combination with P/R achieved fairly good SVR rates in patients that were "most difficult to treat" who failed on dual therapy and was effective among patients with cirrhosis. © 2015 Serbia Medical Society. All rightsreserved.

Background: The global epidemic of nosocomial diarrhea caused by Clostridioides (Clostridium) difficile started in 2000, with high mortality rates and emergence of a new hypervirulent strain NAP1/BI/027. The aim of this study was to assess the presence of ribotype 027 and other C. difficile ribotypes in a Serbian University Hospital, compare the temporal variability of ribotypes 3 years apart, as well as to compare clinical, demographic and laboratory characteristics and disease outcome among patients infected with 027 and non-027 ribotype. This was a prospective observational cohort study addressing 4-month intervals during 2014/2015 and 2017/2018. Results: Ribotyping was performed in 64 non-duplicate C. difficile strains. Ribotype 027 was the most prevalent, and was detected in 53 (82.8%) patients (43/45 and 10/19 patients in 2014-2015 and 2017/2018, respectively). Other detected ribotypes were 001/072 in 4 (6.3%), 002 in 4 (6.3%), 014/020 in 2 (3.1%) and 176 in 1 (1.5%) patient. The percentage of the patients infected with ribotype 027 significantly decreased during the 3-year period, from 95.6 to 52.6% (p < 0.001). Ribotype 027 infection was associated with fluoroquinolone treatment more frequently than infection with other ribotypes [33 (62.3%) vs. 2 (18.2%), p = 0.010)]. A severe C. difficile infection was diagnosed more often in patients with the detected ribotype 027 compared to those infected with non-027 ribotypes (p = 0.006). No significant difference in the mortality and recurrence rates was found between the patients infected with ribotype 027 and those infected with other ribotypes [10/53 (18.8%) vs. 2/11 (18.2%), p = 0.708, and 10/35 (28.6%) vs. 0/2 (0%), p = 1.000, respectively]. Conclusion: Clostridium difficile ribotype 027 was the most prevalent ribotype among patients in a large Serbian hospital, but there is a clear decreasing trend. © 2020 The Author(s).

Background: The global epidemic of nosocomial diarrhea caused by Clostridioides (Clostridium) difficile started in 2000, with high mortality rates and emergence of a new hypervirulent strain NAP1/BI/027. The aim of this study was to assess the presence of ribotype 027 and other C. difficile ribotypes in a Serbian University Hospital, compare the temporal variability of ribotypes 3 years apart, as well as to compare clinical, demographic and laboratory characteristics and disease outcome among patients infected with 027 and non-027 ribotype. This was a prospective observational cohort study addressing 4-month intervals during 2014/2015 and 2017/2018. Results: Ribotyping was performed in 64 non-duplicate C. difficile strains. Ribotype 027 was the most prevalent, and was detected in 53 (82.8%) patients (43/45 and 10/19 patients in 2014-2015 and 2017/2018, respectively). Other detected ribotypes were 001/072 in 4 (6.3%), 002 in 4 (6.3%), 014/020 in 2 (3.1%) and 176 in 1 (1.5%) patient. The percentage of the patients infected with ribotype 027 significantly decreased during the 3-year period, from 95.6 to 52.6% (p < 0.001). Ribotype 027 infection was associated with fluoroquinolone treatment more frequently than infection with other ribotypes [33 (62.3%) vs. 2 (18.2%), p = 0.010)]. A severe C. difficile infection was diagnosed more often in patients with the detected ribotype 027 compared to those infected with non-027 ribotypes (p = 0.006). No significant difference in the mortality and recurrence rates was found between the patients infected with ribotype 027 and those infected with other ribotypes [10/53 (18.8%) vs. 2/11 (18.2%), p = 0.708, and 10/35 (28.6%) vs. 0/2 (0%), p = 1.000, respectively]. Conclusion: Clostridium difficile ribotype 027 was the most prevalent ribotype among patients in a large Serbian hospital, but there is a clear decreasing trend. © 2020 The Author(s).

Background/Aim. In Serbia, pegylated interferon (PEG-IFN) alpha-2a has been registered since 2013 for the treatment of patients with chronic hepatitis B (CHB). Numerous advantages, new experiences during the past five years and lack of any published data in our specific population, have initiated this study, with the aim to examine efficacy and safety of PEG-IFN in patients in a Serbian referral center. Methods. This prospective study included 36 patients with CHB who were treated in the Hepatology Department of the Clinic for Infectious and Tropical Diseases, Clinical Center of Serbia in Belgrade, during 2012–2017. Patients had a standard 48-week treatment protocol with PEG-IFN, with measurements of liver enzymes, serology and viraemia before, during, at the end of the treatment and follow-up 6 months afterwards. Treatment outcome was determined using serology (clearance of HBeAg), biochemical [normalization of alanine aminotransferase (ALT)] and virological response [hepatitis B virus (HBV) DNA < 2,000 IU/mL]. Results. Virological success in patients with HBeAg positive CHB was achieved in 50% of patients, HBeAg clearance in 62.5%, and normalization of ALT in 37.5% of patients. In patients with HBeAg negative CHB, 38% of the patients achieved virologic success, biochemical success was obtained in 47.6% of the patients and only one (4.7%) patient had HBsAg clearance. Conclusion. PEG-IFN is important for treatment of patients with CHB in well-defined situations, and in our population success rates are similar to other published studies. Although safety and tolerability are satisfactory, there is a possibility of more serious side-effects so it is necessary to monitor patients regularly during the treatment. © 2020 Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved.

Background/Aim. The reactivation of the varicella zoster virus results in herpes zoster. Acyclovir is currently recommended over 7 to 10 days for herpes zoster treatment and should be started within 72 hours of rash eruption. This study analyses whether a therapy delay and/or shorter courses of treatment are associated with adverse outcomes. Methods. We identified 292 patients treated at the Clinic for Infectious and Tropical Diseases in Belgrade for herpes zoster in a five-years period. The data on these patients were analyzed using the descriptive statistics, the χ2 test, the Mann-Whitney U-test and the multiple logistic regression analysis. Results. The average time from rash eruption to the first dose of acyclovir was 4.07 ± 2.64 days. The patients received acyclovir for 6.83 ± 2.45 days. Seventy-one patients had disseminated herpes zoster, 100 had cranial nerve involvement, 86 had complications other than postherpetic neuralgia and one patient died. In cases where therapy was delayed there was no significant association with complications (χ2 = 0.031; p = 0.86). Our logistic regression model was not able to predict who was treated less than 7 days. An association between the HZ complications and abbreviated acyclovir regimens was not demonstrated (χ2 = 1.109; p = 0.326). We conducted the PubMed search on February 1st, 2017 and found no proof for the need to apply at least 7 days of acyclovir therapy for herpes zoster in the studies that have been published so far. Conclusion. We were unable to prove an association between therapy delay and unfavorable outcomes. The same was true for shorter than recommended acyclovir courses. © 2019 Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved.

Background/Aim. The era of direct-acting antiviral (DAA) regimen in the treatment of chronic hepatitis C virus (HCV) started in 2011. The aim of this study was to assess the antiviral efficacy and safety of DAA regimen, ombitasvir (OBV)/paritaprevir (PTV)/ritonavir (r) + dasabuvir (DSV) + ribavirin (RBV), in patients with chronic HCV infection, genotype Methods. The real-life data were collected. The study was multicentric and included seven infectious diseases and hepatology departments in Serbia. A total of 21 patients were enrolled in the OBV/PTV/r + DSV + RBV early access program, 20 of which were previously treated with pegylated interferon + RBV, while 1 was treatment-naive. All patients received the adequate doses of these antiviral drugs. RBV was not given to the patients with HCV genotype 1b infection according to the therapeutic protocol. For the majority of patient, the treatment duration lasted for 12 weeks. For the patients with liver cirrhosis, who were infected with HCV genotype 1a, the duration of treatment was 24 weeks. Viremia was assessed at four points in time: At baseline, 4 weeks after the treatment beginning (rapid viral response, RVR), 12 or 24 weeks after the treatment beginning (end of treatment response – ETR) and 12 weeks after the end of treatment (sustained viral response – SVR). SVR, as a confirmation of the absence of HCV was considered as endpoint of successful treatment. Results. Complete RVR, ETR and SVR were achieved in 64.71%, 85.71% and 95.24% of the patients, respectively. Only 3 patients had mild adverse effects which did not required dose reduction. Conclusion. The treatment of the patients with a chronic HCV infection with OBV/PTV/r + DSV + RBV resulted in excellent antiviral activity and tolerability. Apstrakt Uvod/Cilj. Era direktno delujućeg antivirusnog (DAA) režima lečenja bolesnika sa hroničnom hepatitis C virusnom (HCV) infekcijom započela je 2011. godine. Cilj rada bio je ispitivanje efikasnosti i bezbednosti DAA režima ombitasvir (OBV)/paritaprevir (PTV)/ritonavir (r) + dasabuvir (DSV) + ribavirin (RBV), kod bolesnika sa genotip 1 HCV infekci jom u Srbiji. Metode. U multicentričnu studiju je bilo uključeno sedam centara u Srbiji. Prikupljeni su podaci iz realnog života. U rani pristupni program OBV/PTV/r + DSV + RBV bio je uključen 21 bolesnik od kojih jedan nije prethodno lečen, dok je ostalih 20 prethodno lečeno pegilovanim interferonom i RBV. Svi bolesnici su dobijali odgovarajuće doze lekova. Bolesnici sa HCV genotipom 1b nisu dobijali RBV u skladu sa terapijskim protokolom. Za većinu bolesnika trajanje terapije je iznosilo 12 nedelja. Za četvoro bolesnika sa cirozom i HCV genotipom 1a trajanje terapije je iznosilo 24 nedelje. Viremija je određivana četiri puta: Pre početka terapije, 4 nedelje posle početka terapije (rapidni virusološko odgovor – RVR), 12 ili 24 nedelje nakon početka terapije (kraj terapije – ETR) i 12 nedelja nakon završetka terapije (stabilan virusološki odgovor – SVR). Postignut SVR kao potvrda odsustva virusne RNK u serumu, smatran je završnicom uspešnog lečenja. Rezultati. Kompletan RVR, ETR i SVR postignut je kod 64,71%, 85,71%, i 95,24% bolesnika sukcesivno. Samo 3 bolesnika imali su blage neželjene efekte koji nisu zahtevali korekciju doze lekova. Zaključak. Lečenje bolesnika sa hroničnom HCV infekcijom sa OBV/PTV/r + DSV + RBV pokazalo je odličnu antivirusnu aktivnost i podnošljivost. © 2019, Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved.

Introduction Toxic liver injury is becoming greater problem in today´s hepatology. Until today more than 900 drugs, toxins and herbs have been identified that can cause different liver injury. There was no significant research of this problem in Serbia so far. The aim of this study is to present the patient with severe form of acute hepatitis, whose etiology is exclusively toxic. Case outline A 23-year-old male, from Belgrade, previously healthy, got sick with signs and symptoms that correlated with acute hepatitis. Biochemical analyses pointed to severe form of acute hepatitis with impending hepatocellular failure. The diagnosis of toxic liver injury was set. It was caused by the use of number substances and supplements: Ecstasy, whey protein, branched-chain amino acid (BCAA), creatine, high doses of vitamin D, glutamine, and multivitamin complex. He was treated with infusion, gastroprotective, and substitution therapy. During hospitalization, the patient’s symptoms disappeared with gradual normalization of biochemical analyses of the liver. When the patient’s condition was satisfying, blind percutaneous liver biopsy was performed, with the following pathohistological findings: Lobular hepatitis, with no fibrosis, etiology correlates to toxic. After a month and a half since the disease had begun, the patient fully recovered. Conclusion Increased number of persons with toxic liver injury is being registered in developed countries worldwide. Similar trend can be noted in Serbia as well. By presenting young previously healthy man with the severe form of toxic acute hepatitis and impending liver failure, we are pointing out the significance of this problem. Multidisciplinary approach is needed to reach the most effective solutions. © 2019, Serbia Medical Society. All rights reserved.

Introduction Acute liver failure is a rare and very complex clinical syndrome, a consequence of sudden and severe liver dysfunction. There are several causes of this condition (viruses, medications, toxins, metabolic, autoimmune and malignant diseases), but etiological agent often remains undiscovered. Case outline A 40-year-old male patient had suddenly taken ill with signs and symptoms of acute hepatitis, which was confirmed through biochemical analyses. The cause of acute liver failure was not determined. Despite all therapeutic measures, the clinical course of the disease was unfavorable: severe icterus, decreased synthetic function of the liver and hepatic encephalopathy developed. In the later, subacute course of the disease, ascites and episodes of hepatic encephalopathy developed, and biochemical findings indicated chronic hepatocellular failure. After three months of treatment in hepatic coma there was lethal outcome. Histopathological findings confirmed the diagnosis of decompensated liver cirrhosis of unknown origin. Conclusion The cause of acute liver failure often remains unclear; potential causes should be looked for in infections by unknown viruses or in exposures to toxins. The disease is most commonly presented as a subacute failure with the development of liver cirrhosis. Survival rate is low. © 2018, Serbia Medical Society. All rights reserved.