Persistent Antigen A after Minor ABO-Incompatible Hematopoietic Stem Cell Transplantation in Children: Two Case Reports.

Introduction: ABO blood type changes after ABO-incompatible hematopoietic stem cell transplantation (HSCT). Most non-hematopoietic tissues retain the expression of the patient's own ABO antigens, which may adsorb from the plasma onto the donor's red blood cells (RBCs). Because of this phenomenon, a persistent patient's A and/or B antigen could be detected in the laboratory, despite 100% white cell donor chimerism.

Factors influencing blood donation among university students in Vojvodina, Serbia: cross-sectional study.

Background And Objectives: The aim of the present study was to assess the effect of sociodemographic factors on knowledge, attitudes, motivation and potential barriers of university students towards blood donation in the order to more effective donation promotion.

Design: The cross-sectional study was conducted on 1000 participants (500 non-blood donors-NBD, 276 first time blood donors-FTBD and 224 regular blood donors-RBD) from the 14 faculties of the University of Novi Sad, Serbia. The measurement tool used was a pretested survey questionnaire that included 22 questions focused on the factors influencing blood donation.

[Genetic analysis of a blood donor with combined FUT1 and ABO dual blood group gene variants resulting in para-Bombay and A2 subtype blood types and a literature review].

Objective: To investigate the serological and molecular genetic characteristics of a voluntary blood donor with combined FUT1 and ABO blood group gene variants causing para-Bombay and A2 subtype, and to review relevant literature on para-Bombay blood types carrying alleles such as FUT101W.37 and FUT101W.23.

Melatonin Mediates Cardiac Tissue Damage under Septic Conditions Induced by Lipopolysaccharide.

Lipopolysaccharide (LPS) is known to induce oxidative stress and inflammation, leading to significant damage in cardiac tissues. This study investigates the protective effects of melatonin (MLT) against LPS-induced oxidative damage, inflammation, and apoptosis in rat heart tissue. Rats were divided into four groups ( = 6 per group): control, melatonin-treated, LPS-treated, and LPS + melatonin-treated.

Blood Group Variations in COVID-19 Convalescent Plasma and Regular Blood Donors: A Comparative Analysis in the Serbian Population.

This research explores the association between ABO blood groups and susceptibility to SARS-CoV-2 infection, analyzing Convalescent COVID-19 plasma (CCP) donors ( = 500) and healthy whole blood donors (BDs) ( = 9678) during the pandemic (1 May 2020 to 30 April 2021). A comparison is made with pre-pandemic BDs ( = 11,892) from 1 May 2018 to 30 April 2019. Significant differences in blood group distribution are observed, with blood group A individuals being three times more likely to be CCP donors.

Blood Transfusion Procedure: Assessment of Serbian Intensive Care Nurses' Knowledge.

Many patients require administering one or more blood components during hospitalisation in the Intensive Care Unit (ICU). Therefore, nurses' knowledge of who is responsible for immediately administering blood transfusions, monitoring patients, and identifying and managing transfusion reactions is crucial. This cross-sectional descriptive-analytical study aimed to assess the knowledge of ICU nurses in tertiary healthcare institutions about blood transfusion procedures.

Impact of human leucocyte antigen class II polymorphism on anti-red blood cell antibody development: Correlations and indications.

Backround And Objectives: Blood transfusion therapy is vital for many patient groups. They can cause many complications, and the development of anti-red blood cell (RBC) antibodies is of significant importance. Molecules of class II human leucocyte antigens (HLA) are one of the several factors that influence antibody development in patients.

Reactivity of anti-SARS-CoV-2 antibodies in Serbian voluntary blood donors.

Background: The COVID-19 pandemic has major implications on the entire blood supply system worldwide. Seroepidemiological studies are certainly necessary for better understanding the global burden that the COVID-19 pandemic represents.

Objectives: In this study, we analysed the association between demographic factors, COVID-19 severity, vaccination status and the reactivity of anti-SARS-CoV-2 IgG antibodies in Serbian blood donors.

The Influence of Hyperthyroidism on the Coagulation and on the Risk of Thrombosis.

: Apart from the well-known fact that hyperthyroidism induces multiple prothrombotic disorders, there is no consensus in clinical practice as to the impact of hyperthyroidism on the risk of thrombosis. The aim of this study was to examine the various hemostatic and immunologic parameters in patients with hyperthyroidism. : Our study consists of a total of 200 patients comprised of 64 hyperthyroid patients, 68 hypothyroid patients, and 68 euthyroid controls.

Assessment of Factor VIII Activity and D-Dimer Levels in the Post-COVID Period.

Changes in the hemostatic system during COVID infection lead to hypercoagulability. Numerous studies have evaluated hemostatic abnormalities in COVID patients during acute infection, in the period of hospitalization. However, the hemostatic status following hospital discharge has not been sufficiently assessed.

Effect of plateletpheresis on haematological values in voluntary donors: a retrospective data analysis over an eight-month period.

Aim To analyse changes in haematological values after plateletpheresis in donor population with regard to donor safety. Methods A retrospective study was conducted on first time and repeated healthy donors over a period of eight months in the Blood Transfusion Institute in the Federation of Bosnia and Herzegovina in Sarajevo. A total of 75 plateletpheresis procedures performed using Amicus continuous flow cell separator were evaluated.

Monte Carlo Optimization Method Based QSAR Modeling of Placental Barrier Permeability.

Purpose: In order to ensure that drug administration is safe during pregnancy, it is crucial to have the possibility to predict the placental permeability of drugs in humans. The experimental method which is most widely used for the said purpose is in vitro human placental perfusion, though the approach is highly expensive and time consuming. Quantitative structure-activity relationship (QSAR) modeling represents a powerful tool for the assessment of the drug placental transfer, and can be successfully employed to be an alternative in in vitro experiments.

Congenital fibrinogen disorders: a retrospective clinical and genetic analysis of the Prospective Rare Bleeding Disorders Database.

Congenital fibrinogen deficiency (CFD) is a rare bleeding disorder caused by mutations in FGA, FGB, and FGG. We sought to comprehensively characterize patients with CFD using PRO-RBDD (Prospective Rare Bleeding Disorders Database). Clinical phenotypes, laboratory, and genetic features were investigated using retrospective data from the PRO-RBDD.

An interesting case of isolated false-negative hepatitis B surface antigen in a blood donor.

Background And Objectives: An important requirement for a hepatitis B surface antigen (HBsAg) screening assay is reliable detection of HBsAg mutant forms, especially in blood donation. Here we investigate and describe the case of an isolated false-negative result of commercial serology HBsAg screening assay of a blood donor.

Materials And Methods: The current donation was routinely tested for HBsAg and hepatitis B virus (HBV) DNA in the mini-pool mode nucleic acid testing (MP-NAT of six samples), and further evaluated by individual donation ID-NAT.

Individual, sociodemographic, and lifestyle influence on blood chromium, cobalt, and nickel levels in healthy population living in Belgrade, Serbia.

The rapid trend of industrialization and urbanization can lead to greater exposure of the general population to chromium, cobalt, and nickel. Their total body burden from all routes of recent exposure, as well as interindividual variability in exposure levels, metabolism, and excretion rates, are reflected in the blood metal concentrations. The main goals in this study were as follows: observing the reference levels of chromium, cobalt, and nickel in the blood of the population living in Belgrade, identification of individual and sociodemographic factors that most affect their blood levels, and comprehension of recent exposure to chromium, cobalt, and nickel.

Factors Associated with Seroprevalence in Pregnant Women: A Cross-Sectional Study in Belgrade, Serbia.

Toxoplasmosis, caused by the cosmopolitan protozoan , has particular implications during pregnancy due to the possible transmission of infection to the fetus. Very few studies have assessed seroprevalence and the risk factors for toxoplasmosis in healthy pregnant women. The aim of this study was to examine the seroprevalence of infection in healthy pregnant women and to identify the associated risk factors for toxoplasmosis.

Tick-Borne Encephalitis Virus and Seroprevalence in Balkan Tick-Infested Individuals: A Two-Centre Study.

Lyme borreliosis (LB) and tick-borne encephalitis (TBE) are important tick-borne diseases in Europe. This study aimed to investigate the seroreactivity against and TBE virus (TBEV) in tick-infested individuals in North Macedonia and Serbia. Serum samples were collected from tick-infested individuals and from healthy individuals in the same regions.

The Price of Hospital Reshaping: Nasal Myiasis Caused by Flesh Fly (Diptera: Sarcophagidae) in Reallocated COVID-19 Intensive Care Unit.

Myiasis is a condition characterized by fly larvae infestation, most common in tropical regions, but with a risk of occurring anywhere in the world. Here, we report a case of nasal myiasis caused by a sarcophagid fly in a critically ill COVID-19 patient hospitalized in a reallocated ICU department in Serbia and discuss procedures that could prevent the occurrence of similar incidents in reallocated ICU departments worldwide.

Dynamic light scattering analysis of immune complexes in sera of rheumatoid arthritis patients.

The size of circulating immune complexes (CICs) in rheumatoid arthritis (RA) could be an emerging criterion in disease diagnosis. This study analyzed size and electrokinetic potential of CICs from RA patients, healthy young adults, and RA patients age-matched controls aiming to establish their unique CIC features. Pooled CIC of 30 RA patients, 30 young adults, and 30 RA group's age-matched controls (middle-aged and oldеr healthy adults), and in vitro IgG aggregates from pooled sera of 300 healthy volunteers were tested using dynamic light scattering (DLS).

Direct antiglobulin test positivity in Serbian blood donors in the era of gel card technology.

Background And Objectives: In the era of gel cards, we aimed to determine the incidence of a positive direct antiglobulin test (DAT) in a population of blood donors in Serbia and to compare results with the period when a conventional tube technique was used.

Materials And Methods: A retrospective study was conducted on 184,171 blood donors over 10 years (2012-2021). Positive DAT results initially were detected after positive result of the compatibility test.

HIV-Infected Patients as a Model of Aging.

We appraised the relationship between the biological and the chronological age and estimated the rate of biological aging in HIV-infected patients. Two independent biomarkers, the relative telomere length and iron metabolism parameters, were analyzed in younger (<35) and older (>50) HIV-infected and uninfected patients (control group). In our control group, telomeres of younger patients were significantly longer than telomeres of older ones.

Factor VIII Activity in Relation to the Type of Thrombosis and Patient's Risk Factors for Thrombosis, Age, and Comorbidity.

Objective: Elevated factor VIII has been shown to be an independent risk factor for deep venous thrombosis and pulmonary embolism. It has been suggested that increased factor VIII levels by itself is insufficient to cause thrombosis; however, increased factor VIII with other risk factors could increase the risk of thrombosis. The aim of the study was to evaluate the factor VIII level with regard to the type of thrombosis and patient's risk factors such as age or comorbidity.