Aims: Cystic fibrosis is an autosomal recessive multisystem disease caused by a mutation of the CFTR gene. To date, more than 1900 mutations of this gene are known. Studies have shown that the most common mutation is delF508. In Bosnia and Herzegovina, the prevalence of individual mutations in the general population has not been thoroughly studied, so this study aimed to determine the prevalence of the mutation concerning the countries of the region and the rest of the world. Study Design: Retrospective study. Place and Duration of Study: Thirty-nine subjects with suspected Cystic fibrosis were referred to the Center for Genetics of the Medical Faculty in Sarajevo between 2018-2020. Methodology: 29 common CFTR gene mutations were analysed with the ELUCIGENE CF29 v2 kit (Elucigene Diagnostics, UK) using four multiplex PCR. Results: The most common mutation in our study was the F508 deletion, present in 14 subjects (73.68%). R347P and G542X mutations were confirmed in two subjects in the heterozygous state in combination with delF508 (M) 5.26% of each of these mutations. 621+1G>T was found in a homozygous state in one subject, while in another, it was in a heterozygous state in combination with delF508(M) mutation, 10.52%. Mutation 2184 delA was found in one subject in the homozygous state with a total frequency of 5.26%. Conclusion: Subjects with cystic fibrosis in Bosnia and Herzegovina are most often carriers of the delF508 mutation. Considering the existence of many mutations and that it is difficult to test them all, targeting the most common mutations in a clinical environment might help in approving therapy, and increasing patients’ quality of life.

Background: Coronavirus disease 2019 (COVID-19) can cause a wide clinical spectrum, ranging from asymptomatic to severe disease with a high mortality rate. In view of the current pandemic and the increasing influx of patients into healthcare facilities, there is a need to identify simple and reliable tools for stratifying patients. Objective: Study aimed to analyze whether hemogram-derived ratios (HDRs) can be used to identify patients with a risk of developing a severe clinical form and admission to hospital. Methods: This cross-sectional and observational study included 500 patients with a confirmed diagnosis of COVID-19. Data on clinical features and laboratory parameters were collected from medical records and 13 HDRs were calculated and analyzed. Descriptive and inferential statistics were included in the analysis. Results: Of the 500 patients, 43.8% had a severe form of the disease. Lymphocytopenia, monocytopenia, higher C-reactive protein (CRP), and erythrocyte sedimentation rate (ESR) were found in severe patients (p < 0.05). Significantly higher neutrophil-to-lymphocyte ratio (NLR), derived NLR (dNLR), neutrophil-to-platelet ratio (NPR), neutrophil-to-lymphocyte-to-platelet ratio (NLPR) and CRP-to-lymphocyte ratio (CRP/Ly) values were found in severe patients (p < 0.001). In addition, they have statistically significant prognostic potential (p < 0.001). The area under the curve (AUC) for CRP/Ly, dNLR, NLPR, NLR, and NPR were 0.693, 0.619, 0.619, 0.616, and 0.603, respectively. The sensitivity and specificity were 65.7% and 65.6% for CRP/Ly, 51.6% and 70.8 for dNLR, 61.6% and 57.3% for NLPR, 40.6% and 80.4% for NLR, and 48.8% and 69.1% for NPR. Conclusion: The results of the study suggest that NLR, dNLR, CRP/Ly, NPR, and NLPR can be considered as potentially useful markers for stratifying patients with a severe form of the disease. HDRs derived from routine blood tests results should be included in common laboratory practice since they are readily available, easy to calculate, and inexpensive.

Abstract Background CYP3A5 enzyme encoded by CYP3A5 is important for drug metabolism in gut and liver, whereas P-glycoprotein by ABCB1, is an ATP-dependent drug efflux pump which exports endo- and exogenous substances outside the cell. Aim The study was to assess the prevalence of CYP3A5 alleles: *1, *2, *3, *4, *6 and *7, and C and T of ABCB1 in Poles, Belarusians and Bosnians and to compare it with the data reported from other European populations. Subjects and methods Overall, 511 unrelated healthy subjects from Poland (n = 239), Belarus (n = 104) and Bosnia and Herzegovina (n = 168) were included in this study. Allele frequencies and statistical parameters (AMOVA version 2.9.3) were determined. Results In Poles, Belarusians and Bosnians the *3 allele of CYP3A5 was the most common, and wild-type allele *1, were: 5.8%, 1.6% and 2.1%, respectively. Allele *2 was very rare, and alleles *4, *6 and *7 were not detected. For the populations mentioned above, the ABCB1 allele C was: 48.1%, 51.4%, 52.4%, respectively. Conclusion In compared populations, the distribution of CYP3A5 variants but not ABCB1, differed significantly. Alleles *4, *6 and *7 of CYP3A5 did not occur or occurred rarely.

INTRODUCTION Breast cancer is the most common malignancy in women. Modern research attempts to investigate the relationship between psychoemotional parameters and the length of survival of breast cancer patients. Understanding the factors which affect a higher level of resilience can have important clinical implications and can represent a guiding principle for designing psychological interventions that would accelerate recovery and improve the quality of life of cancer patients. To explore the relationship between resilience and quality of life of women with breast cancer. METHODS The study was conducted at the Clinic of Oncology of the University Clinical Hospital Mostar, which included 60 subjects. Objective realization was achieved through using the socio-demographic questionnaire purposely made for this research, the quality of life questionnaire WHQOL-BREF and the psychological resilience questionnaire CD-RISC-25. RESULTS Subjects treated with radiotherapy achieved statistically significantly higher scores on subscales of the quality of life: mental health, social relations, and the environment. No statistically significant correlations were found between the level of resilience and results in the domains of quality of life. CONCLUSION There is not a statistically significant association between resilience levels and quality of life in patients with breast cancer.

Background: Immunization is a key step in preventing the occupational risk of acquiring hepatitis B infection for healthcare workers (HCWs). The aim of the study was determination of hepatitis B vaccine (HepB) coverage rate among HCWs and support staff and immune response 10 years after primary vaccination. Methods: A retrospective study was conducted in the Public Institution Health Centre of Sarajevo Canton in Bosnia and Herzegovina during 2005-2017. Second-generation vaccines Euvax (Sanofi Pasteur, Thailand/LG Life

BACKGROUND Cerebrospinal levels of isoprostanes (IsoPs) have been established as biomarkers of oxidative stress in Alzheimer's disease (AD) and vascular dementia (VD). The value of peripheral levels in the diagnostics of these diseases is less conclusive. The aim of this study was to determine serum 8-iso-prostaglandin-F2alpha (8-iso-PGF2α) levels in Bosnian AD and VD patients and to establish whether there is an association between 8-iso-PGF2α serum concentration and cognitive impairment (CI) in patients with dementia. SUBJECTS AND METHODS Serum levels of 8-iso-PGF2α were measured by enzyme immunoassay method in AD (n=30) and VD patients (n=30) and control subjects (CG, n=30). The AD and VD group were further stratified according to the level of CI. RESULTS The serum 8-iso-PGF2α levels were significantly higher in the AD (74.00 pg/mL) and VD groups (38.00 pg/mL) compared to the CG (17.50 pg/mL). A significant difference in serum 8-iso-PGF2α levels between patients with moderate and severe CI was not established in either AD or VD. CONCLUSION Serum 8-iso-PGF2α proved to be a good biomarker in AD and VD, however it cannot be recommended for the differentiation of moderate and severe CI.

A study of COVID-19 infected patients was conducted regarding to organic and psychological characteristics. The findings of the study indicate that in the period of the pandemic in 2020, a total of 78 infection cases were confirmed in West Herzegovina Canton. Of the total number of infected, 55.1% are women and 44.9% are men. Of the infected population, 16.7% were hospitalized. By monitoring the COVID-19 disease in West Herzegovina Canton, we conclude how all manifestations of the disease were represented, from asymptomatic, through mild respiratory to the most severe clinical picture with fatal outcomes. The mortality rate in West Herzegovina Canton is 5.1%. The study showed that a total of 28.2% of COVID-19 positive patients before infecting with virus, were most likely to suffer from hypertension, diabetes and malignancies. Furthermore, it is important to emphasize that a total of 71.9% of those infected are without underlying diseases. Also, the results indicate that people with COVID-19 in addition to the characteristic symptoms of the disease (fever, fatigue, cough, etc.) had certain mental ailments such as decreased general mood, increased anxiety, panic attacks, acute stress disorder and others.

Background: Immunization is a key step in preventing the occupational risk of acquiring hepatitis B infection for healthcare workers (HCWs). Objective: The aim of the study was determination the hepatitis B vaccine (HepB) coverage rate among HCWs and support staff and immune response 10 years after primary vaccination.Methods: A retrospective study was conducted in the Public Institution Health Centre of Sarajevo Canton in Bosnia and Herzegovina. Second-generation vaccines Euvax (Sanofi Pasteur, Thailand/LG Life Sciences Ltd, Korea) and Engerix B (GlaxoSmithKline, Belgium) were applied. A level of ≥ 10 IU/L anti-HBs was set as a cut-off value indicating the presence of protective immunity against new HBV infections and successful vaccination. Results: In total, 1541 (75.80%) were fully vaccinated, out of 1126 (73.07%) were females. The median age of participans was 50.5 ± 9.4 years. Control measurement of the anti-HBs level was performed for 409 (26.54%) HCWs. During the research, 37 booster doses were administered. Of the 23 retested participants, anti-HBs ≥10 IU/L were observed in 19 (82.16%). Three non-reactors subject were revealed.Conclusions: A satisfying HepB coverage rate and a high protective rate against hepatitis B infection among HCWs and support staff was achived. These results indicate the active engagement of the institution in the implementation of preventive measures and the high level of awareness regarding the significance of immunization. Our results demonstrated the effectiveness of booster doses. A low prevalence of non-reactors was revealed. Additional research with a focus on occupational risk factors in dental service is advised.