Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation
- Autores
- Gavazza, Mariana Beatriz; Marmunti, Monica Edith; Montalti, Diego; Gutiérrez, Ana María
- Año de publicación
- 2008
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Lipid peroxidation is generally thought to be a major mechanism of cell injury in aerobic organisms subjected to oxidative stress. All cellular membranes are especially vulnerable to oxidation due to their high concentration of polyunsaturated fatty acids. However, birds have special adaptations for preventing membrane damage caused by reactive oxygen species. This study examines fatty acid profiles and susceptibility to lipid peroxidation in liver and heart mitochondria obtained from Adelie penguin (Pygoscelis adeliae). The saturated fatty acids in these organelles represent approximately 40–50% of total fatty acids whereas the polyunsaturated fatty acid composition was highly distinctive, characterized by almost equal amounts of 18:2 n-6; 20:4n-6 and 22:6 n-3 in liver mitochondria, and a higher proportion of 18:2 n-6 compared to 20:4n-6 and 22:6 n-3 in heart mitochondria. The concentration of total unsaturated fatty acids of liver and heart mitochondria was approximately 50% and 60%, respectively, with a prevalence of oleic acid C18:1 n9. The rate C20:4 n6 / C18:2 n6 and the unsaturation index was similar in liver and heart mitochondria; 104.33 ± 6.73 and 100.09 ± 3.07, respectively. Light emission originating from these organelles showed no statistically significant differences and the polyunsaturated fatty acid profiles did not change during the lipid peroxidation process.
Facultad de Ciencias Veterinarias
Facultad de Ciencias Naturales y Museo - Materia
-
Veterinaria
Ciencias Naturales
penguin
lipid peroxidation
liver
heart-mitochondria - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/131273
Ver los metadatos del registro completo
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Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidationGavazza, Mariana BeatrizMarmunti, Monica EdithMontalti, DiegoGutiérrez, Ana MaríaVeterinariaCiencias Naturalespenguinlipid peroxidationliverheart-mitochondriaLipid peroxidation is generally thought to be a major mechanism of cell injury in aerobic organisms subjected to oxidative stress. All cellular membranes are especially vulnerable to oxidation due to their high concentration of polyunsaturated fatty acids. However, birds have special adaptations for preventing membrane damage caused by reactive oxygen species. This study examines fatty acid profiles and susceptibility to lipid peroxidation in liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>). The saturated fatty acids in these organelles represent approximately 40–50% of total fatty acids whereas the polyunsaturated fatty acid composition was highly distinctive, characterized by almost equal amounts of 18:2 n-6; 20:4n-6 and 22:6 n-3 in liver mitochondria, and a higher proportion of 18:2 n-6 compared to 20:4n-6 and 22:6 n-3 in heart mitochondria. The concentration of total unsaturated fatty acids of liver and heart mitochondria was approximately 50% and 60%, respectively, with a prevalence of oleic acid C18:1 n9. The rate C20:4 n6 / C18:2 n6 and the unsaturation index was similar in liver and heart mitochondria; 104.33 ± 6.73 and 100.09 ± 3.07, respectively. Light emission originating from these organelles showed no statistically significant differences and the polyunsaturated fatty acid profiles did not change during the lipid peroxidation process.Facultad de Ciencias VeterinariasFacultad de Ciencias Naturales y Museo2008info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf185-194http://sedici.unlp.edu.ar/handle/10915/131273enginfo:eu-repo/semantics/altIdentifier/issn/0236-5383info:eu-repo/semantics/altIdentifier/issn/1588-256Xinfo:eu-repo/semantics/altIdentifier/doi/10.1556/abiol.59.2008.2.5info:eu-repo/semantics/altIdentifier/pmid/18637558info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:26Zoai:sedici.unlp.edu.ar:10915/131273Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:27.233SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation |
title |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation |
spellingShingle |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation Gavazza, Mariana Beatriz Veterinaria Ciencias Naturales penguin lipid peroxidation liver heart-mitochondria |
title_short |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation |
title_full |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation |
title_fullStr |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation |
title_full_unstemmed |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation |
title_sort |
Liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>) offers high resistance to lipid peroxidation |
dc.creator.none.fl_str_mv |
Gavazza, Mariana Beatriz Marmunti, Monica Edith Montalti, Diego Gutiérrez, Ana María |
author |
Gavazza, Mariana Beatriz |
author_facet |
Gavazza, Mariana Beatriz Marmunti, Monica Edith Montalti, Diego Gutiérrez, Ana María |
author_role |
author |
author2 |
Marmunti, Monica Edith Montalti, Diego Gutiérrez, Ana María |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Veterinaria Ciencias Naturales penguin lipid peroxidation liver heart-mitochondria |
topic |
Veterinaria Ciencias Naturales penguin lipid peroxidation liver heart-mitochondria |
dc.description.none.fl_txt_mv |
Lipid peroxidation is generally thought to be a major mechanism of cell injury in aerobic organisms subjected to oxidative stress. All cellular membranes are especially vulnerable to oxidation due to their high concentration of polyunsaturated fatty acids. However, birds have special adaptations for preventing membrane damage caused by reactive oxygen species. This study examines fatty acid profiles and susceptibility to lipid peroxidation in liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>). The saturated fatty acids in these organelles represent approximately 40–50% of total fatty acids whereas the polyunsaturated fatty acid composition was highly distinctive, characterized by almost equal amounts of 18:2 n-6; 20:4n-6 and 22:6 n-3 in liver mitochondria, and a higher proportion of 18:2 n-6 compared to 20:4n-6 and 22:6 n-3 in heart mitochondria. The concentration of total unsaturated fatty acids of liver and heart mitochondria was approximately 50% and 60%, respectively, with a prevalence of oleic acid C18:1 n9. The rate C20:4 n6 / C18:2 n6 and the unsaturation index was similar in liver and heart mitochondria; 104.33 ± 6.73 and 100.09 ± 3.07, respectively. Light emission originating from these organelles showed no statistically significant differences and the polyunsaturated fatty acid profiles did not change during the lipid peroxidation process. Facultad de Ciencias Veterinarias Facultad de Ciencias Naturales y Museo |
description |
Lipid peroxidation is generally thought to be a major mechanism of cell injury in aerobic organisms subjected to oxidative stress. All cellular membranes are especially vulnerable to oxidation due to their high concentration of polyunsaturated fatty acids. However, birds have special adaptations for preventing membrane damage caused by reactive oxygen species. This study examines fatty acid profiles and susceptibility to lipid peroxidation in liver and heart mitochondria obtained from Adelie penguin (<i>Pygoscelis adeliae</i>). The saturated fatty acids in these organelles represent approximately 40–50% of total fatty acids whereas the polyunsaturated fatty acid composition was highly distinctive, characterized by almost equal amounts of 18:2 n-6; 20:4n-6 and 22:6 n-3 in liver mitochondria, and a higher proportion of 18:2 n-6 compared to 20:4n-6 and 22:6 n-3 in heart mitochondria. The concentration of total unsaturated fatty acids of liver and heart mitochondria was approximately 50% and 60%, respectively, with a prevalence of oleic acid C18:1 n9. The rate C20:4 n6 / C18:2 n6 and the unsaturation index was similar in liver and heart mitochondria; 104.33 ± 6.73 and 100.09 ± 3.07, respectively. Light emission originating from these organelles showed no statistically significant differences and the polyunsaturated fatty acid profiles did not change during the lipid peroxidation process. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/131273 |
url |
http://sedici.unlp.edu.ar/handle/10915/131273 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0236-5383 info:eu-repo/semantics/altIdentifier/issn/1588-256X info:eu-repo/semantics/altIdentifier/doi/10.1556/abiol.59.2008.2.5 info:eu-repo/semantics/altIdentifier/pmid/18637558 |
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info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf 185-194 |
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