2024
Songbirds avoid the oxidative stress costs of high blood glucose levels: a comparative study
VÁGÁSI, Csongor I., Orsolya VINCZE, Marie KOTASOVÁ ADÁMKOVÁ, Tereza KAUZÁLOVÁ, Ádám Z. LENDVAI et. al.Základní údaje
Originální název
Songbirds avoid the oxidative stress costs of high blood glucose levels: a comparative study
Autoři
VÁGÁSI, Csongor I., Orsolya VINCZE, Marie KOTASOVÁ ADÁMKOVÁ (203 Česká republika, domácí), Tereza KAUZÁLOVÁ (203 Česká republika), Ádám Z. LENDVAI, Laura I. PATRAS, Janka PÉNZES, Péter L. PAP, Tomáš ALBRECHT (203 Česká republika) a Oldřich TOMÁŠEK (203 Česká republika, domácí)
Vydání
The Journal of Experimental Biology, Company of Biologists Ltd, 2024, 0022-0949
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10615 Ornithology
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.800 v roce 2022
Organizační jednotka
Přírodovědecká fakulta
UT WoS
001214515700010
Klíčová slova anglicky
Antioxidants; Glucose; Hyperglycaemia; Lipid peroxidation; Phylogenetic comparison; Physiological ecology
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 20. 5. 2024 11:19, Mgr. Marie Šípková, DiS.
Anotace
V originále
Chronically high blood glucose levels (hyperglycaemia) can compromise healthy ageing and lifespan at the individual level. Elevated oxidative stress can play a central role in hyperglycaemia-induced pathologies. Nevertheless, the lifespan of birds shows no species-level association with blood glucose. This suggests that the potential pathologies of high blood glucose levels can be avoided by adaptations in oxidative physiology at the macroevolutionary scale. However, this hypothesis remains unexplored. Here, we examined this hypothesis using comparative analyses controlled for phylogeny, allometry and fecundity based on data from 51 songbird species (681 individuals with blood glucose data and 1021 individuals with oxidative state data). We measured blood glucose at baseline and after stress stimulus and computed glucose stress reactivity as the magnitude of change between the two time points. We also measured three parameters of non-enzymatic antioxidants (uric acid, total antioxidants and glutathione) and a marker of oxidative lipid damage (malondialdehyde). We found no clear evidence for blood glucose concentration being correlated with either antioxidant or lipid damage levels at the macroevolutionary scale, as opposed to the hypothesis postulating that high blood glucose levels entail oxidative costs. The only exception was the moderate evidence for species with a stronger stress-induced increase in blood glucose concentration evolving moderately lower investment into antioxidant defence (uric acid and glutathione). Neither baseline nor stress-induced glucose levels were associated with oxidative physiology. Our findings support the hypothesis that birds evolved adaptations preventing the (glyc)oxidative costs of high blood glucose observed at the within-species level. Such adaptations may explain the decoupled evolution of glycaemia and lifespan in birds and possibly the paradoxical combination of long lifespan and high blood glucose levels relative to mammals.
Návaznosti
GA21-22160S, projekt VaV |
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