Caracterización de biomarcadores de estrés oxidativo en perros. Intervalos de referencia, fuentes de variación biológica e interferencias endógenas
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2025
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26/04/2026
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Universidad Complutense de Madrid
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El perro se considera la especie animal con mayor polimorfismo del planeta, lo que se refleja en sus variadas razas y aptitudes. Se estima que España cuenta con más de siete millones de perros registrados, entre los de tutores particulares, los perros de trabajo y los alojados en colectividades como centros de protección animal o los empleados en investigación. En esta especie, los análisis clínicos laboratoriales constituyen una herramienta esencial para valorar su estado de salud y bienestar. Si bien tradicionalmente se han empleado técnicas de hematología y bioquímica rutinarias, en los últimos años se han identificado nuevos biomarcadores potencialmente valiosos en perros, como aquellos englobados dentro del fenómeno conocido como “estrés oxidativo”. El estrés oxidativo se define como un desequilibrio entre los agentes oxidantes procedentes de reacciones bioquímicas internas o de agentes externos, y las fuerzas antioxidantes del organismo, en favor de los primeros. Aunque este fenómeno interviene en muchos mecanismos fisiológicos de señalización celular, también puede ocasionar notables daños moleculares y tisulares. En los últimos años la investigación en estrés oxidativo ha experimentado un crecimiento masivo, evidenciando su implicación en multitud de patologías y en procesos como el envejecimiento celular, el ejercicio físico o el estrés emocional...
The dog is considered one of the most polymorphic species on the planet, which is reflected in their different breeds and skills. The estimated number of registered dogs in Spain exceeds seven million, taking into account domestic dogs kept as pets, working dogs, and other dogs kept in kennels, such as those housed in animal shelters or those used in research. Clinical analyses are an essential tool for assessing the health status and welfare of these dogs. Haematology and routine biochemistry tests have traditionally been employed for this matter. However, new potentially valuable biomarkers have been identified in the past few years, such as those encompassed in the concept of “oxidative stress”.Oxidative stress is defined as an imbalance between oxidants, arising from inner biochemical reactions or from external agents, and the organism’s antioxidant forces, in favour of the oxidants. Although this phenomenon is essential for certain signalling physiologic processes, it can also lead to severe molecular and tissue injuries. Lately, the investigation on oxidative stress has experienced a massive growth, revealing its implication in a plethora of diseases, as well as in other processes such as cellular ageing, physical exercise or emotional stress...
The dog is considered one of the most polymorphic species on the planet, which is reflected in their different breeds and skills. The estimated number of registered dogs in Spain exceeds seven million, taking into account domestic dogs kept as pets, working dogs, and other dogs kept in kennels, such as those housed in animal shelters or those used in research. Clinical analyses are an essential tool for assessing the health status and welfare of these dogs. Haematology and routine biochemistry tests have traditionally been employed for this matter. However, new potentially valuable biomarkers have been identified in the past few years, such as those encompassed in the concept of “oxidative stress”.Oxidative stress is defined as an imbalance between oxidants, arising from inner biochemical reactions or from external agents, and the organism’s antioxidant forces, in favour of the oxidants. Although this phenomenon is essential for certain signalling physiologic processes, it can also lead to severe molecular and tissue injuries. Lately, the investigation on oxidative stress has experienced a massive growth, revealing its implication in a plethora of diseases, as well as in other processes such as cellular ageing, physical exercise or emotional stress...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Veterinaria, leída el 26/04/2024