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2. Redox state is similar in subjects following omnivorous, vegan, vegetarian, and low-carbohydrate high-fat dietNives Bogataj Jontez, Karin Šik Novak, Zala Jenko Pražnikar, Ana Petelin, Nina Mohorko, Saša Kenig, 2025, izvirni znanstveni članek Opis: Age-related noncommunicable diseases are a major health burden in developed countries, with oxidative stress being a key contributing factor. This cross-sectional study aimed to test the hypothesis that redox status among 88 participants with a particular interest in nutrition and habitually following 4 popular dietary patterns (vegan, vegetarian, low-carbohydrate high-fat, and omnivorous), is similar, but correlates with diet quality. Dietary intake was assessed using food diaries, and venous blood samples were collected to measure serum total antioxidative capacity (TAC), bilirubin, nicotinamide adenine dinucleotide (NAD⁺)/reduced form of nicotinamide adenine dinucleotide (NADH) ratio, and sirtuin 1 concentration, and the expression of antioxidative enzymes in leukocytes. TAC and the NAD⁺/NADH ratio were higher in the vegan group compared with the vegetarian group, whereas bilirubin concentration was higher in the omnivorous compared with the low-carbohydrate high-fat group. Other differences between the dietary groups were not significant. NAD+/NADH ratio and sirtuin 1 were positively correlated with diet quality, assessed with the Healthy Eating Index. Correlation analysis between dietary variables and redox markers revealed only a few weak to moderate associations. However, a hierarchical regression model including age, gender, and dietary variables explained 19.8% of the variance in TAC, 21.2% of the variance in the NAD⁺/NADH ratio, and 44.3% of the variance in sirtuin 1 concentration. Therefore, in healthy, relatively young participants with appropriate energy intakes, endogenous mechanisms are able to compensate for oxidative stress to a similar extent, regardless of dietary pattern. Nonetheless, overall diet quality and food selection appear to play a meaningful role in redox balance.
Ključne besede: oxidative stress, total antioxidative capacity, sirtuin 1, diet quality
Objavljeno v RUP: 02.12.2025; Ogledov: 334; Prenosov: 2
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6. Zdravje otrok in mladostnikov : 6. znanstvena in strokovna konferenca z mednarodno udeležbo2022, druge monografije in druga zaključena dela Opis: The publication is intended for researchers, university teachers, students, experts in the field of health and education, as well as anyone interested in the well-being of children and adolescents. The
authors of contributions have presented their research findings and examples of good practices in the following thematic areas: (1) psychosocial health in childhood and youth; (2) nutrition of children and youth; (3) information and communication technology solutions
and services for the health of children and youth; (4) the child and youth – the environment, and (5) physical (in)activity of children and youth.
Ključne besede: mladostniki, telesna aktivnost, telesna neaktivnost, informacijsko-komunikacijska tehnologija, prehrana, duševno zdravje, duševne motnje, zborniki, elektronske knjige
Objavljeno v RUP: 21.03.2023; Ogledov: 4452; Prenosov: 43
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9. Helichrysum italicum ssp. italicum infusion promotes fat oxidation in hepatocytes and stimulates energy expenditure and fat oxidation after acute ingestion in humans : a pilot studySaša Kenig, Katja Kramberger, Ana Petelin, Dunja Bandelj, Alenka Baruca Arbeiter, Ana Miklavčič Višnjevec, Kelly Peeters, Nina Mohorko, Karin Šik Novak, Zala Jenko Pražnikar, 2021, izvirni znanstveni članek Ključne besede: Helichrysum italicum, infusion, polyphenols, energy expenditure, fat oxidation, blood pressure, pilot study
Objavljeno v RUP: 30.07.2021; Ogledov: 2740; Prenosov: 81
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