Comparación de la capacidad antioxidante de la Coenzima Q10 y la Vitamina E en ratas BIOU: Wistar intoxicadas con dosis variable de Paraquat
nº52 [Noviembre 17 - Mayo 18] Retel29/01/2018
María Di Bernardo; Dubelia Montoya; Yasmin Morales; Sulay Brito; Tibisay Rojas de Marín; Sonia Boueiri; Andrés Osorio; Yepsy Montero; Thania Zambrano de Davila
Resumen
El Paraquat (PQ) es un herbicida tipo bipiridilo muy utilizado en la agricultura para el control de las malas hierbas, su uso indebido representa una elevada tasa de mortalidad. Actualmente no existe ningún tratamiento efectivo para tratar al paciente intoxicado con este herbicida, por lo que se han instaurado numerosos esquemas terapéuticos para minimizar el daño pulmonar producto del estrés oxidativo. Este estudio pretende hacer un aporte comparando la capacidad antioxidante de la Coenzima Q10 (CoQ10) no usada en estos casos y la Vitamina E, la cual es ampliamente utilizada en todos los esquemas terapéuticos. Este trabajo se basó en la determinación del marcador indirecto del estrés oxidativo Malondialdehido (MDA) en ratas BIOU: Wistar intoxicadas con PQ. Se manejaron 46 ratas BIOU: Wistar a las cuales se les administró PQ vía oral (V.O) clasificadas de la siguiente manera: n=6 grupo control experimental (CE) de los cuales 3 con dosis de 15 mg/kg de peso y 3 con dosis de 30 mg/kg de peso de PQ , un grupo experimental A (EA) n=10 Hembras con dosis de 15 mg/kg de Peso de PQ con una administración diaria de 100 mg/kg de peso de CoQ10, un grupo experimental B (EB) n=10 machos con dosis de 30 mg/kg de Peso de PQ con una administración diaria de 100 mg/kg de peso de CoQ10, grupo experimental C (EC) n=10 Hembras con dosis de 15 mg/kg de Peso de PQ con una administración diaria de 80 mg/kg de peso de Vit E, un grupo experimental D (ED) n=10 machos con dosis de 30 mg/kg de Peso de PQ con una administración diaria de 80 mg/kg de peso de Vit E, todos los grupos recibieron simultáneamente tratamiento de sostén, se tuvo un grupo testigo (CT) n=2 monitoreando condiciones ambientales. Los niveles hematológicos y bioquímicos se realizaron al inicio y fin del experimento. Las concentraciones de MDA se hicieron el día 4,10 y 20 del ensayo. A los 21 días experimentales las ratas que culminaron el experimento fueron sacrificadas por la técnica de dislocación cervical con observaciones anatomopatológicas. Los resultados de bioquímica sanguínea mostró una uremia debido a la deshidratación y daño toxico tubular con aumento igual de creatinina en ambos grupos siendo más marcado en la dosis de 30 mg/kg de peso. La capacidad antioxidante se midió a través de la enzima MDA mediante la técnica de espectrofotometría de luz ultravioleta. Los resultados demostraron que la CoQ10 tiene mayor efectividad que la Vitamina E como antioxidante con la dosis de 15 mg/Kg de peso corporal de PQ. En dosis de 30 mg/Kg de peso corporal de PQ las ratas con Vit E observaron mayor sobrevida en comparación con las tratadas CoQ10, mas sin embargo, las diferencias estadísticas no fueron significativas. Estos resultados demostraron que la CoQ10 puede resultar un sustituto competitivo ante la Vit E para reducir el daño causado por el PQ a nivel pulmonar.
Palabras Claves: Antioxidante, Coenzima Q10, Espectrofotometría, Estrés Oxidativo, Malondialdehido, Paraquat
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Palabras Claves: Antioxidante, Coenzima Q10, Espectrofotometría, Estrés Oxidativo, Malondialdehido, Paraquat
Descargar PDF (525 KB)
Abstract
Comparison of the antioxidant capacity of Coenzyme Q10 and Vitamin E in rats BIOU: Wistar intoxicated with variable doses of Paraquat
Paraquat (PQ) is a bipyridyl herbicide widely used in agriculture for the control of weeds; its improper use represents a high mortality rate. Currently there is no effective treatment to treat the patient intoxicated with this herbicide, which is why numerous therapeutic schemes have been established to minimize lung damage due to oxidative stress. This study aims to make a contribution by comparing the antioxidant capacity of Coenzyme Q10 (CoQ10) not used in these cases and Vitamin E, which is widely used in all therapeutic schemes. This work was based on the determination of the indirect marker of oxidative stress malondialdehyde (MDA) in BIOU: Wistar rats intoxicated with PQ. 46 BIOU: Wistar rats were administered to which they were administered PQ orally (VO) classified as follows: n = 6 experimental control group (CE) of which 3 with a dose of 15 mg / kg of weight and 3 with dose of 30 mg / kg of weight of PQ, an experimental group A (EA) n = 10 Females with a dose of 15 mg / kg of Weight of PQ with a daily administration of 100 mg / kg of CoQ10 weight, an experimental group B (EB) n = 10 males with a dose of 30 mg / kg of Weight of PQ with a daily administration of 100 mg / kg of CoQ10 weight, experimental group C (EC) n = 10 Females with a dose of 15 mg / kg of Weight of PQ with a daily administration of 80 mg / kg of weight of Vit E, an experimental group D (ED) n = 10 males with a dose of 30 mg / kg of Weight of PQ with a daily administration of 80 mg / kg of weight of Vit E, all groups were simultaneously receiving supportive treatment, had a control group (CT) n = 2 monitoring environmental conditions. The hematological and biochemical levels were performed at the beginning and end of the experiment. The concentrations of MDA were made on day 4, 10 and 20 of the trial. After 21 experimental days, the rats that culminated the experiment were sacrificed by the cervical dislocation technique with anatomopathological observations. The results of blood biochemistry showed a uremia due to dehydration and toxic tubular damage with equal increase in creatinine in both groups being more marked in the dose of 30 mg / kg of weight. The antioxidant capacity was measured through the MDA enzyme by ultraviolet light spectrophotometry technique. The results showed that CoQ10 is more effective than Vitamin E as an antioxidant with the dose of 15 mg / Kg of body weight of PQ. In a dose of 30 mg / Kg of body weight of PQ rats with Vit E observed higher survival compared to those treated with CoQ10, but nevertheless, the statistical differences were not significant. These results demonstrated that CoQ10 can be a competitive substitute against Vit E to reduce the damage caused by PQ at the pulmonary level.
Keywords: Antioxidant, Coenzyme Q10, UV-visible spectrophotometry, Oxidative Stress, Malondialdehyde, Paraquat.
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Paraquat (PQ) is a bipyridyl herbicide widely used in agriculture for the control of weeds; its improper use represents a high mortality rate. Currently there is no effective treatment to treat the patient intoxicated with this herbicide, which is why numerous therapeutic schemes have been established to minimize lung damage due to oxidative stress. This study aims to make a contribution by comparing the antioxidant capacity of Coenzyme Q10 (CoQ10) not used in these cases and Vitamin E, which is widely used in all therapeutic schemes. This work was based on the determination of the indirect marker of oxidative stress malondialdehyde (MDA) in BIOU: Wistar rats intoxicated with PQ. 46 BIOU: Wistar rats were administered to which they were administered PQ orally (VO) classified as follows: n = 6 experimental control group (CE) of which 3 with a dose of 15 mg / kg of weight and 3 with dose of 30 mg / kg of weight of PQ, an experimental group A (EA) n = 10 Females with a dose of 15 mg / kg of Weight of PQ with a daily administration of 100 mg / kg of CoQ10 weight, an experimental group B (EB) n = 10 males with a dose of 30 mg / kg of Weight of PQ with a daily administration of 100 mg / kg of CoQ10 weight, experimental group C (EC) n = 10 Females with a dose of 15 mg / kg of Weight of PQ with a daily administration of 80 mg / kg of weight of Vit E, an experimental group D (ED) n = 10 males with a dose of 30 mg / kg of Weight of PQ with a daily administration of 80 mg / kg of weight of Vit E, all groups were simultaneously receiving supportive treatment, had a control group (CT) n = 2 monitoring environmental conditions. The hematological and biochemical levels were performed at the beginning and end of the experiment. The concentrations of MDA were made on day 4, 10 and 20 of the trial. After 21 experimental days, the rats that culminated the experiment were sacrificed by the cervical dislocation technique with anatomopathological observations. The results of blood biochemistry showed a uremia due to dehydration and toxic tubular damage with equal increase in creatinine in both groups being more marked in the dose of 30 mg / kg of weight. The antioxidant capacity was measured through the MDA enzyme by ultraviolet light spectrophotometry technique. The results showed that CoQ10 is more effective than Vitamin E as an antioxidant with the dose of 15 mg / Kg of body weight of PQ. In a dose of 30 mg / Kg of body weight of PQ rats with Vit E observed higher survival compared to those treated with CoQ10, but nevertheless, the statistical differences were not significant. These results demonstrated that CoQ10 can be a competitive substitute against Vit E to reduce the damage caused by PQ at the pulmonary level.
Keywords: Antioxidant, Coenzyme Q10, UV-visible spectrophotometry, Oxidative Stress, Malondialdehyde, Paraquat.
Download PDF (529 KB)