Seasonal Variation in the Regulation of Redox State and Some Biotransformation Enzyme Activities in the Barn Swallow (<i>Hirundo rustica</i>L.)

Raja-aho, Sari; Kanerva, Mirella; Eeva, Tapio; Lehikoinen, Esa; Suorsa, Petri; Gao, Kai; Vosloo, Daléne; Nikinmaa, Mikko

doi:10.1086/664826

Cited by 27 publications

(20 citation statements)

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“…Hence, moult may result in redox imbalance, but this topic has not been thoroughly addressed. A previous study showed that barn swallows (Hirundo rustica) at initial stages of flight feather moult had higher glutathione S-transferase activity and lipid hydroperoxides than birds that had nearly terminated moult, suggesting that moult, either directly or indirectly via increased energy expenditure due to handicapped flight, may cause oxidative stress (Raja-aho et al, 2012). Our findings strongly suggest that moult resulted in higher protein oxidative damage (reduced PSH).…”

Section: Moult Oxidative Status and Sex Differencessupporting

confidence: 62%

“…In the analyses, we included normalized tGSH (μmol l −1 g −1 Hb) and the GSH:GSSG ratio (higher values reflect low oxidative stress conditions) (e.g. Raja-aho et al, 2012).…”

Section: Determination Of Circulating Gshmentioning

confidence: 99%

“…In addition, we investigated the effects of redox status and body condition indices on moult status, while expecting individuals in better condition (irrespective of dietary flavonoid supplementation) to moult earlier and/or more extensively. Concomitantly, as moult is a highly energy demanding process that may induce oxidative stress (Raja-aho et al, 2012), we compared the redox status of actively moulting individuals versus those that have not yet started moult.…”

Section: Introductionmentioning

confidence: 99%

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Dietary flavonoids advance timing of moult but do not affect redox status of juvenile blackbirds (Turdus merula)

Cecere

Caprioli

Carnevali

et al. 2016

Journal of Experimental Biology

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Flavonoids are the most abundant plant polyphenols, widely occurring in fruits and berries, and show a strong antioxidant activity in vitro. Studies of avian species feeding on berries suggest that dietary flavonoids have health-promoting effects and may enhance the expression of melanin-based plumage traits. These effects are probably mediated by the antioxidant activity of flavonoids. However, the effect of dietary flavonoids on oxidative status has never been investigated in any bird species. We analysed the effects of dietary flavonoids on blood non-enzymatic antioxidants and protein oxidative damage of juvenile European blackbirds (Turdus merula). In addition, we analysed the effects of flavonoid-enriched diet on body condition and on the timing of moult from juvenile to adult plumage. Dietary flavonoids did not significantly affect redox status but significantly advanced the onset of moult, hastening plumage development. Moulting birds showed higher protein oxidative damage compared with those that had not yet started moulting. The probability of initiating moult after 40 days of dietary treatment was higher for birds with low circulating levels of oxidizing agents and high glutathione concentration. The metabolization of flavonoids could have altered their redox potential, resulting in no net effects on redox status. However, flavonoid consumption before and during moult may contribute to enhance plumage development. Moreover, our findings suggest that moulting feathers may result in redox imbalance. Given their effect on moult and growth of melanin-rich feathers, fruit flavonoids may have contributed to shape plant fruiting time in relation to fruit consumption preferences by birds.

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Section: Moult Oxidative Status and Sex Differencessupporting

confidence: 62%

“…In the analyses, we included normalized tGSH (μmol l −1 g −1 Hb) and the GSH:GSSG ratio (higher values reflect low oxidative stress conditions) (e.g. Raja-aho et al, 2012).…”

Section: Determination Of Circulating Gshmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dietary flavonoids advance timing of moult but do not affect redox status of juvenile blackbirds (Turdus merula)

Cecere

Caprioli

Carnevali

et al. 2016

Journal of Experimental Biology

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“…Changes in oxidative stress over the year can be related to excess production of ROS and/or the periodic overwhelming of the antioxidant system by parasites and the activated immune system (Schaefer et al 2008;Sorci and Faivre 2009;Cohen et al 2010). The limited number of studies investigating oxidative physiology over the year have provided mixed evidence perhaps because of variation in methodologies to assess oxidative status, taxonomic differences, varying environmental conditions, or sampling that covered only a limited period of the year Norte et al 2009;van de Crommenacker et al 2011;Raja-aho et al 2012;Rubolini et al 2012;Pap et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Seasonal Patterns and Relationships among Coccidian Infestations, Measures of Oxidative Physiology, and Immune Function in Free-Living House Sparrows over an Annual Cycle

Pap¹,

Pătraș²,

Osváth³

et al. 2015

Physiological and Biochemical Zoology

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Temporal variation in oxidative physiology and its associated immune function may occur as a result of changes in parasite infection over the year. Evidence from field and laboratory studies suggests links between infection risk, oxidative stress, and the ability of animals to mount an immune response; however, the importance of parasites in mediating seasonal change in physiological makeup is still debated. Also, little is known about the temporal consistency of relationships among parasite infestation, markers of oxidative status and immune function in wild animals, and whether variation in oxidative measures can be viewed as a single integrated system. To address these questions, we sampled free-living house sparrows (Passer domesticus) every 2 mo over a complete year and measured infestation with coccidian parasites as well as nine traits that reflect condition, oxidative physiology, and immune function. We found significant seasonal variation in coccidian infestation and in seven out of nine condition and physiological variables over the year. However, we found little support for parasite-mediated change in condition, oxidative physiology, and immune functions in house sparrows. In accordance with this, we found no temporal consistency in relationships between the intensity of infestation and physiology. Among measures of oxidative physiology, antioxidants (measured as the total antioxidant capacity and the concentration of uric acid in the plasma) and oxidative damage (measured through the level of malondialdehyde in plasma) positively and consistently covaried over the year, while no such associations were found for the rest of traits (body mass, total glutathione, and leukocyte numbers). Our results show that natural levels of chronic coccidian infection have a limited effect on the seasonal change of physiological traits, suggesting that the variation of the latter is probably more affected by short-term disturbances, such as acute infection and/or season-specific stress stimuli.

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“…Una de las limitaciones al utilizar biomarcadores de estrés oxidativo en estudios ambientales en aves, es la escasez de información acerca de las variaciones estacionales y de los niveles basales en sangre o en tejidos (Raja-aho et al, 2012). En la fauna silvestre, los ciclos anuales están sincronizados con las variaciones temporales del ambiente (fotoperiodo, temperatura, época de lluvia y de sequía y disponibilidad de alimento), afectando la morfología, la fisiología y el comportamiento de los organismos (Wikelski et al, 2008).…”

Section: Introductionunclassified

Histopatología del Hígado, Lipoperoxidación e Índices Somáticos de Fulica americana en losHumedales de Xochimilco(Urbano) y Tecocomulco (Rural) de la Cuenca de México

et al. 2016

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LÓPEZ-ISLAS, M. E.; IBARRA-MEZA, I.; ORTIZ-ORDÓÑEZ, E.; FAVARI, L.; SEDEÑO-DÍAZ, J. E. & LÓPEZ-LÓPEZ, E.Histopatología del hígado, lipoperoxidación e índices somáticos de Fulica americana en los humedales de Xochimilco (urbano) y Tecocomulco (rural), de la Cuenca de México. Int. J. Morphol., 34(2):522-532, 2016. RESUMEN:Los humedales son cuerpos de agua muy productivos y son refugio para aves migratorias; sin embargo, continuamente reciben contaminantes que ejercen daños en los organismos acuáticos. El objetivo del trabajo fue evaluar el estado de salud de Fulica americana mediante biomarcadores histopatológicos, de estrés oxidativo, e índices somáticos en dos humedales de la Cuenca de México, para evaluar el efecto de las condiciones del hábitat en la salud de las aves. Se obtuvieron ejemplares en los humedales, Xochimilco (X) y Tecocomulco (T) en diferentes períodos de un año. Se determinó su edad, se evisceraron y pesaron, se obtuvieron porciones del hígado para el análisis histológico y para la cuantificación del nivel de lipoperoxidación (LPO). Se analizó la calidad del agua de X y T. Se realizó la técnica histológica de inclusión en parafina y la tinción Hematoxilina-Eosina. El mayor deterioro de la calidad del agua se observó en X. Se encontró infiltración leucocitaria (IN) y vasocongestión (VA) en tres grados. En T se observó la mayor prevalencia de ejemplares con daños combinados, en particular en las hembras; mientras que en X se presentó un mayor porcentaje de organismos con IN. La LPO más alta se observó durante el invierno en T lo que pudiera estar relacionado con el arribo de aves migratorias y la cacería; mientras que en X la mayor LPO estuvo relacionada con la reproducción. La mayor masa corporal eviscerada se presentó en los machos de T y la menor en las hembras de X. En todas las gallaretas los índices hepatosomáticos máximos se alcanzaron en otoño y los mínimos en primavera. F. americana puede ser utilizada como centinela debido a que presentó respuestas diferenciadas en los índices somáticos y en los biomarcadores histopatológicos y de estrés oxidativo en las distintas localidades, sexo y épocas del año.

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Seasonal Variation in the Regulation of Redox State and Some Biotransformation Enzyme Activities in the Barn Swallow (Hirundo rusticaL.)

Cited by 27 publications

References 50 publications

Dietary flavonoids advance timing of moult but do not affect redox status of juvenile blackbirds (Turdus merula)

Dietary flavonoids advance timing of moult but do not affect redox status of juvenile blackbirds (Turdus merula)

Seasonal Patterns and Relationships among Coccidian Infestations, Measures of Oxidative Physiology, and Immune Function in Free-Living House Sparrows over an Annual Cycle

Histopatología del Hígado, Lipoperoxidación e Índices Somáticos de Fulica americana en losHumedales de Xochimilco(Urbano) y Tecocomulco (Rural) de la Cuenca de México

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