J 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.

Basic information

Original name

Songbirds avoid the oxidative stress costs of high blood glucose levels: a comparative study

Authors

VÁGÁSI, Csongor I., Orsolya VINCZE, Marie KOTASOVÁ ADÁMKOVÁ (203 Czech Republic, belonging to the institution), Tereza KAUZÁLOVÁ (203 Czech Republic), Ádám Z. LENDVAI, Laura I. PATRAS, Janka PÉNZES, Péter L. PAP, Tomáš ALBRECHT (203 Czech Republic) and Oldřich TOMÁŠEK (203 Czech Republic, belonging to the institution)

Edition

The Journal of Experimental Biology, Company of Biologists Ltd, 2024, 0022-0949

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10615 Ornithology

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.800 in 2022

Organization unit

Faculty of Science

UT WoS

001214515700010

Keywords in English

Antioxidants; Glucose; Hyperglycaemia; Lipid peroxidation; Phylogenetic comparison; Physiological ecology

Tags

Tags

International impact, Reviewed
Změněno: 20/5/2024 11:19, Mgr. Marie Šípková, DiS.

Abstract

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.

Links

GA21-22160S, research and development project
Name: Diverzita a fyziologické mechanizmy stárnutí v populaci volně žijícího pěvce
Investor: Czech Science Foundation