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1.
Correlation of oxidative stress biomarkers with activity of pediatric idiopathic nephrotic syndrome
Matjaž Kopač, Aleš Jerin, Ema Bohinc, Joško Osredkar, 2025, izvirni znanstveni članek

Povzetek: Background/Objectives: This study investigated the correlation of oxidative stress biomarkers with the activity of idiopathic nephrotic syndrome (INS) in Slovenian children. Methods: In this prospective study, sequential plasma and urine samples from 20 children with INS in different phases of disease activity were taken: at first disease presentation or relapse (before glucocorticoid (GC) treatment), at time of remission achievement, and after discontinuation of GC treatment. This study measured oxidative stress biomarkers, such as 8-hydroxy-2′-deoxyguanosine (8-OHdG), hexanoyl-lysine (HEL) adduct, dityrosine (DiY), and 15-isoprostane F2t, using competitive enzyme-linked immunosorbent assay (ELISA) and assessed oxidative status using the FRAS 5 analytical system, which enables rapid photometric measurement of both oxidative and antioxidant capacity from biological fluids. Two complementary tests were performed: the d-ROMs test (derivatives of reactive oxygen metabolites) and the PAT (plasma antioxidant test). The oxidative stress index (OSI) was calculated as the ratio between them. Results: Concentrations of isoprostanes in urine were statistically significantly lower in patients at first disease presentation or relapse compared to time of remission achievement. Values of PAT test in serum were significantly highest after GC treatment. Values of d-ROMs test in serum were significantly lower at time of remission achievement compared to first disease presentation or relapse. Values of 8-OHdG, HEL, DiY (in plasma and urine), isoprostanes, and OSI in plasma did not statistically significantly differ in various phases of disease activity. Conclusions: Isoprostanes in urine and PAT in serum could serve as potential biomarkers of oxidative stress and disease activity in children with INS.
Ključne besede: oxidative stress biomarkers, idiopathic nephrotic syndrome, children, oxidative stress index
Objavljeno v DiRROS: 27.11.2025; Ogledov: 111; Prenosov: 45
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2.
Television food advertising to children in Slovenia : analyses using a large 12-month advertising dataset
Živa Lavriša, Igor Pravst, 2016, izvirni znanstveni članek

Povzetek: Objectives: The marketing of energy-dense foods is recognised as a probable causal factor in children's overweight and obesity. To stimulate policymakers to start using nutrient profiling to restrict food marketing, a harmonised model was recently proposed by the WHO. Our objective is to evaluate the television advertising of foods in Slovenia using the above-mentioned model. Methods: An analysis is performed using a representative dataset of 93,902 food-related advertisements broadcast in Slovenia in year 2013. The advertisements are linked to specific foods, which are then subject to categorisation according to the WHO and UK nutrient profile model. Results: Advertising of chocolate and confectionery represented 37% of food-related advertising in all viewing times, and 77% in children's (4-9 years) viewing hours. During these hours, 96% of the food advertisements did not pass the criteria for permitted advertising according to the WHO profile model. Conclusions: Evidence from Slovenia shows that, in the absence of efficient regulatory marketing restrictions, television advertising of food to children is almost exclusively linked to energy-dense foods. Minor modifications of the proposed WHO nutrient profile model are suggested.
Ključne besede: food advertising, nutrient profile, regulation, children, television, marketing
Objavljeno v DiRROS: 27.11.2025; Ogledov: 109; Prenosov: 55
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Febrile illness in high-risk children : a prospective, international observational study
Fabian Johannes Stanislaus Van der Velden, Gabriella De Vries, Alexander James Martin, Emma Lim, Ulrich Von Both, Laura Kolberg, Enitan D Carrol, Aakash Khanijau, Marko Pokorn, 2023, izvirni znanstveni članek

Povzetek: To assess and describe the aetiology and management of febrile illness in children with primary or acquired immunodeficiency at high risk of serious bacterial infection, as seen in emergency departments in tertiary hospitals. Prospective data on demographics, presenting features, investigations, microbiology, management, and outcome of patients within the 'Biomarker Validation in HR patients' database in PERFORM, were analysed. Immunocompromised children (< 18 years old) presented to fifteen European hospitals in nine countries, and one Gambian hospital, with fever or suspected infection and clinical indication for blood investigations. Febrile episodes were assigned clinical phenotypes using the validated PERFORM algorithm. Logistic regression was used to assess the effect size of predictive features of proven/presumed bacterial or viral infection. A total of 599 episodes in 482 children were analysed. Seventy-eight episodes (13.0%) were definite bacterial, 67 episodes probable bacterial (11.2%), and 29 bacterial syndrome (4.8%). Fifty-five were definite viral (9.2%), 49 probable viral (8.2%), and 23 viral syndrome (3.8%). One hundred ninety were unknown bacterial or viral infections (31.7%), and 108 had inflammatory or other non-infectious causes of fever (18.1%). Predictive features of proven/presumed bacterial infection were ill appearance (OR 3.1 (95% CI 2.1-4.6)) and HIV (OR 10.4 (95% CI 2.0-54.4)). Ill appearance reduced the odds of having a proven/presumed viral infection (OR 0.5 ( 95% CI 0.3-0.9)). A total of 82.1% had new empirical antibiotics started on admission (N = 492); 94.3% proven/presumed bacterial (N = 164), 66.1% proven/presumed viral (N = 84), and 93.2% unknown bacterial or viral infections (N = 177). Mortality was 1.9% (N = 11) and 87.1% made full recovery (N = 522). Conclusion: The aetiology of febrile illness in immunocompromised children is diverse. In one-third of cases, no cause for the fever will be identified. Justification for standard intravenous antibiotic treatment for every febrile immunocompromised child is debatable, yet effective. Better clinical decision-making tools and new biomarkers are needed for this population.
Ključne besede: immunocompromised, paediatric, children, fever, infection, antibiotics
Objavljeno v DiRROS: 21.11.2025; Ogledov: 143; Prenosov: 61
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5.
Marketing of foods to children through food packaging is almost exclusively linked to unhealthy foods
Živa Lavriša, Igor Pravst, 2019, izvirni znanstveni članek

Ključne besede: food marketing, children, food packaging, nutritional composition, nutrient profiling
Objavljeno v DiRROS: 18.11.2025; Ogledov: 119; Prenosov: 48
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6.
Emergency medical services utilisation among febrile children attending emergency departments across Europe : an observational multicentre study
Chantal D. Tan, Clementien L. Vermont, Joany M. Zachariasse, Ulrich Von Both, Irini Eleftheriou, Marieke Emonts, Michiel Van der Flier, Jethro Adam Herberg, Marko Pokorn, 2023, izvirni znanstveni članek

Povzetek: Children constitute 6–10% of all patients attending the emergency department (ED) by emergency medical services (EMS). However, discordant EMS use in children occurs in 37–61% with fever as an important risk factor. We aimed to describe EMS utilisation among febrile children attending European EDs. This study is part of an observational multicentre study assessing management and outcome in febrile children up to 18 years (MOFICHE) attending twelve EDs in eight European countries. Discordant EMS use was defined as the absence of markers of urgency including intermediate/high triage urgency, advanced diagnostics, treatment, and admission in children transferred by EMS. Multivariable logistic regression analyses were performed for the association between (1) EMS use and markers of urgency, and (2) patient characteristics and discordant EMS use after adjusting all analyses for the covariates age, gender, visiting hours, presenting symptoms, and ED setting. A total of 5464 (15%, range 0.1–42%) children attended the ED by EMS. Markers of urgency were more frequently present in the EMS group compared with the non-EMS group. Discordant EMS use occurred in 1601 children (29%, range 1–59%). Age and gender were not associated with discordant EMS use, whereas neurological symptoms were associated with less discordant EMS use (aOR 0.2, 95%CI 0.1–0.2), and attendance out of office hours was associated with more discordant EMS use (aOR 1.6, 95%CI 1.4–1.9). Settings with higher percentage of self-referrals to the ED had more discordant EMS use (p < 0.05). Conclusion: There is large practice variation in EMS use in febrile children attending European EDs. Markers of urgency were more frequently present in children in the EMS group. However, discordant EMS use occurred in 29%. Further research is needed on non-medical factors influencing discordant EMS use in febrile children across Europe, so that pre-emptive strategies can be implemented.
Ključne besede: emergency medical services, emergency care, children, fever, paediatrics
Objavljeno v DiRROS: 17.11.2025; Ogledov: 124; Prenosov: 44
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7.
Guideline adherence in febrile children below 3 months visiting European Emergency Departments : an observational multicenter study
Chantal D. Tan, Eline E. P. L. van der Walle, Clementien L. Vermont, Ulrich Von Both, Enitan D Carrol, Irini Eleftheriou, Marieke Emonts, Michiel Van der Flier, Ronald De Groot, Marko Pokorn, 2022, izvirni znanstveni članek

Povzetek: Febrile children below 3 months have a higher risk of serious bacterial infections, which often leads to extensive diagnostics and treatment. There is practice variation in management due to differences in guidelines and their usage and adherence. We aimed to assess whether management in febrile children below 3 months attending European Emergency Departments (EDs) was according to the guidelines for fever. This study is part of the MOFICHE study, which is an observational multicenter study including routine data of febrile children (0–18 years) attending twelve EDs in eight European countries. In febrile children below 3 months (excluding bronchiolitis), we analyzed actual management compared to the guidelines for fever. Ten EDs applied the (adapted) NICE guideline, and two EDs applied local guidelines. Management included diagnostic tests, antibiotic treatment, and admission. We included 913 children with a median age of 1.7 months (IQR 1.0–2.3). Management per ED varied as follows: use of diagnostic tests 14–83%, antibiotic treatment 23–54%, admission 34–86%. Adherence to the guideline was 43% (374/868) for blood cultures, 29% (144/491) for lumbar punctures, 55% (270/492) for antibiotic prescriptions, and 67% (573/859) for admission. Full adherence to these four management components occurred in 15% (132/868, range 0–38%), partial adherence occurred in 56% (484/868, range 35–77%). Conclusion: There is large practice variation in management. The guideline adherence was limited, but highest for admission which implies a cautious approach. Future studies should focus on guideline revision including new biomarkers in order to optimize management in young febrile children.
Ključne besede: fever, children, pediatrics, guideline, emergency care
Objavljeno v DiRROS: 17.11.2025; Ogledov: 116; Prenosov: 60
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8.
Impact of infection on proteome-wide glycosylation revealed by distinct signatures for bacterial and viral pathogens
Esther Willems, Jolein Gloerich, Anouk Suppers, Michiel Van der Flier, 2023, izvirni znanstveni članek

Povzetek: Mechanisms of infection and pathogenesis have predominantly been studied based on differential gene or protein expression. Less is known about posttrans-lational modifications, which are essential for protein functional diversity. We applied an innovative glycoproteomics method to study the systemic prote-ome-wide glycosylation in response to infection. The protein site-specific glyco-sylation was characterized in plasma derived from well-defined controls and patients. We found 3862 unique features, of which we identified 463 distinct intact glycopeptides, that could be mapped to more than 30 different proteins. Statistical analyses were used to derive a glycopeptide signature that enabled significant differentiation between patients with a bacterial or viral infection. Furthermore, supported by a machine learning algorithm, we demonstrated the ability to identify the causative pathogens based on the distinctive host blood plasma glycopeptide signatures. These results illustrate that glycoproteomics holds enormous potential as an innovative approach to improve the interpreta-tion of relevant biological changes in response to infection.
Ključne besede: plasma, roles, glycoproteomics, biomarkers, profiles, children, glycome
Objavljeno v DiRROS: 17.11.2025; Ogledov: 91; Prenosov: 38
.pdf Celotno besedilo (4,99 MB)
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9.
Sex differences in cholesterol levels among prepubertal children
Jan Kafol, Mia Becker, Barbara Čugalj Kern, Jaka Šikonja, Matej Mlinarič, Katarina Sedej, Matej Kafol, Ana Drole Torkar, Jernej Kovač, Tadej Battelino, Urh Grošelj, 2025, izvirni znanstveni članek

Povzetek: Background and aims: Sex differences in cholesterol levels are well documented in adults and adolescents, but limited data exist for prepubertal children. This study aimed to evaluate innate sex differences in total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) levels among prepubertal children, both in the general population and among those with familial hypercholesterolemia (FH). Methods: This cross-sectional study used data from Slovenia’s Universal FH Screening Program. Two populationbased random samples of children undergoing routine cholesterol screening at age 5 years were included from 2014 (N = 3412) and 2023 (N = 4182). In addition, a referred cohort from the Slovenian Hypercholesterolemia Registry (n = 1160, aged <10 years) who underwent genetic testing was analyzed. Results: In both the 2014 and 2023 cohorts, girls had significantly higher TC levels than boys (median difference: 0.10–0.11 mmol/L; p < 0.05). Among FH-negative children in the Registry, girls had on average 0.14 mmol/L higher TC and 0.13 mmol/L higher LDL-C than boys (both p < 0.05). No sex differences were observed in FHpositive children (p = 0.83 for TC; p = 0.82 for LDL-C). In the overall Registry cohort, after adjusting for FH status, girls had 0.11 mmol/L higher TC and 0.10 mmol/L higher LDL-C (both p < 0.05). Conclusion: Prepubertal girls have modestly higher TC and LDL-C than boys, a difference not observed in prepubertal FH-positive children, suggesting that the presence of a pathogenic FH variant may override innate physiological differences in lipid metabolism. These findings support universal early cholesterol screening and suggest that sex-specific reference values may improve early cardiovascular risk assessment in prepubertal FHnegative children.
Ključne besede: sex differences, prepubertal children, total cholesterol, low-density lipoprotein cholesterol, familial hypercholesterolemia
Objavljeno v DiRROS: 17.11.2025; Ogledov: 122; Prenosov: 58
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10.
Intestinal involvement in graft versus host disease in children : an overview by the ESPGHAN Gastroenterology Committee
Marina Vincent, Amit Assa, Osvaldo Borrelli, Matjaž Homan, Javier Martin-de-Carpi, Zrinjka Mišak, Maria Giovanna Puoti, Isabelle Scheers, Sara Sila, Caterina Strisciuglio, Christos Tzivinikos, Jernej Dolinšek, Emmanuel Mas, 2025, pregledni znanstveni članek

Povzetek: Graft versus host disease (GVHD) is a complication that frequently occurs afterhaematopoietic stem cell transplantation and concerns many children in paediatrichaematology‐oncology and bone marrow transplantation departments. It can affectvarious organs, with the skin, gastrointestinal tract and liver being the most com-monly involved. To confirm intestinal GVHD and to rule out differential diagnosesendoscopy is frequently needed. Currently, there are no specific consensus rec-ommendations concerning the best method for endoscopic exploration and medicalmanagement of this disease in children, with limited studies available, including alow number of patients. Sigmoidoscopy could be initially proposed under sedation. Ifsigmoidoscopy is normal or if a general anaesthesia is required, colonoscopy andupper endoscopy should be planned, avoiding duodenal biopsy because of the riskof duodenal haematoma. Regarding therapeutic options, corticosteroids are thefirst‐line treatment for GVHD. Ruxolitinib, a Janus kinase inhibitor, is indicated forchildren aged 12 years and older with acute or chronic GVHD who have aninadequate response to corticosteroids or other systemic therapies. Nutritionalsupport has a key role in the management of intestinal GVHD and should beconsidered to guarantee the best possible evolution of intestinal GVHD.
Ključne besede: GVHD, children, complication, endoscopy, haematopoietic stem cell transplantation, intestine
Objavljeno v DiRROS: 14.11.2025; Ogledov: 123; Prenosov: 54
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