Actividad antihipertensiva, hipocolesterolémica y antioxidante de hidrolizados proteicos de cañihua (Chenopodium pallidicaule Aellen) mediante estudios en vivo
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Authors
Poma Pari, Kattya Jazmín
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Abstract
En el presente estudio, se obtuvo un hidrolizado proteico de cañihua (HPC) con actividad antioxidante y antihipertensiva in vitro de 2.08±0.05 µmol TE/mg proteína, 76.72±4.38 por ciento de inhibición de la enzima convertidora de angiotensina-I (ECA) e IC50 de 0.10±0.01 mg/mL, respectivamente, el cual se empleó en ratas para evaluar in vivo las posibles actividades antihipertensiva, hipocolesterolémica y antioxidante a una administración oral de 100 mg de proteína de HPC/kg de peso corporal. Los resultados mostraron que el HPC presentó actividad antihipertensiva al reducir significativamente la presión arterial sistólica y diastólica de 184.4±10.9 a 161.6±8.7 mm Hg y de 155.2±19.4 a 138.8±9.9 mm Hg, respectivamente, en referencia a las ratas hipertensas inducidas con L-NAME. Por otro lado, el HPC no presentó una actividad hipocolesterolémica significativa de acuerdo al perfil lipídico, redujo significativamente los niveles séricos de colesterol total (CT), triglicéridos totales (TT) y colesterol-VLDL (C-VLDL); sin embargo, no incrementó el contenido de colesterol-HDL (C-HDL) y no se evidenció una disminución significativa del colesterol-LDL (C-LDL) con respecto a las ratas con hipercolesterolemia inducida con dieta rica en colesterol (HCD), quienes presentaron CT (106.5±12.3 mg/dL), TT (82.3±16.9 mg/dL), C-HDL (40.3±4.9 mg/dL), C-LDL (49.5±13.5 mg/dL) y C-VLDL (16.7±3.3 mg/dL), mientras que las ratas con HCD presentaron CT (131.2±9.2 mg/dL), TT (117.2±29.5 mg/dL), C-HDL (53.3±10.2 mg/dL), C-LDL (54.5±14.4 mg/dL) y C-VLDL (23.3±5.7 mg/dL). Por último, el HPC presentó actividad antioxidante en ratas con HCD al mantener la actividad antioxidante de la superóxido dismutasa (SOD) respecto al grupo control, con un valor de 1.76±0.19 U/mg proteína, a pesar de inducir el estrés oxidativo con la dieta rica en colesterol
In the present study, a canihua protein hydrolyzate (CPH) with antioxidant and antihypertensive activity in vitro of 2.08±0.05 μmol TE / mg protein, 76.72±4.38 percent inhibition of angiotensin-I converting enzyme (ACE) and IC50 of 0.10±0.01 mg/mL, respectively, which was used in rats to evaluate in vivo the possible antihypertensive, hypocholesterolemic and antioxidant activities of an oral administration of 100 mg of CPH protein/kg of body weight. The results showed that the CPH presented antihypertensive activity by significantly reducing the systolic and diastolic blood pressure from 184.4±10.9 to 161.6±8.7 mm Hg and from 155.2±19.4 to 138.8±9.9 mm Hg, respectively, in reference to the hypertensive rats induced with L-NAME. On the other hand, CPH did not present a significant hypocholesterolemic activity according to the lipid profile, significantly reducing serum levels of total cholesterol (TC), total triglycerides (TT) and VLDL-colesterol (VLDL-C); however, the content of HDL-cholesterol (HDL-C) did not increase and there was no significant decrease in LDL-cholesterol (LDL-C) with respect to rats with highcholesterol diet-induced hypercholesterolemia (HCD), presented TC (106.5±12.3 mg/dL), TT (82.3±16.9 mg/dL), HDL-C (40.3±4.9 mg/dL), LDL-C (49.5±13.5 mg/dL) and VLDL-C (16.7±3.3 mg/dL), while rats with HCD presented TC (131.2±9.2 mg/dL), TT (117.2±29.5 mg/dL), HDL-C (53.3±10.2 mg/dL), LDL-C (54.5±14.4 mg/dL) and VLDL-C (23.3±5.7 mg/dL). Finally, the CPH presented antioxidant activity in rats with HCD by maintaining the antioxidant activity of superoxide dismutase (SOD) with respect to the control group, with a value of 1.76±0.19 U/mg protein, despite inducing oxidative stress with the high cholesterol diet
In the present study, a canihua protein hydrolyzate (CPH) with antioxidant and antihypertensive activity in vitro of 2.08±0.05 μmol TE / mg protein, 76.72±4.38 percent inhibition of angiotensin-I converting enzyme (ACE) and IC50 of 0.10±0.01 mg/mL, respectively, which was used in rats to evaluate in vivo the possible antihypertensive, hypocholesterolemic and antioxidant activities of an oral administration of 100 mg of CPH protein/kg of body weight. The results showed that the CPH presented antihypertensive activity by significantly reducing the systolic and diastolic blood pressure from 184.4±10.9 to 161.6±8.7 mm Hg and from 155.2±19.4 to 138.8±9.9 mm Hg, respectively, in reference to the hypertensive rats induced with L-NAME. On the other hand, CPH did not present a significant hypocholesterolemic activity according to the lipid profile, significantly reducing serum levels of total cholesterol (TC), total triglycerides (TT) and VLDL-colesterol (VLDL-C); however, the content of HDL-cholesterol (HDL-C) did not increase and there was no significant decrease in LDL-cholesterol (LDL-C) with respect to rats with highcholesterol diet-induced hypercholesterolemia (HCD), presented TC (106.5±12.3 mg/dL), TT (82.3±16.9 mg/dL), HDL-C (40.3±4.9 mg/dL), LDL-C (49.5±13.5 mg/dL) and VLDL-C (16.7±3.3 mg/dL), while rats with HCD presented TC (131.2±9.2 mg/dL), TT (117.2±29.5 mg/dL), HDL-C (53.3±10.2 mg/dL), LDL-C (54.5±14.4 mg/dL) and VLDL-C (23.3±5.7 mg/dL). Finally, the CPH presented antioxidant activity in rats with HCD by maintaining the antioxidant activity of superoxide dismutase (SOD) with respect to the control group, with a value of 1.76±0.19 U/mg protein, despite inducing oxidative stress with the high cholesterol diet
Description
Universidad Nacional Agraria La Molina. Facultad de Industrias Alimentarias. Departamento Académico de Ingeniería de Alimentos y Productos Agropecuarios
Keywords
Chenopodium pallidicaule; Péptidos; Antioxidantes; Antihipertensores; Composición química; Técnicas analíticas; Productos proteínicos; Experimentación in vivo; Colesterol; Rata; Perú; Cañihua; Actividad antihipertensiva; Hipocolesterolemica; Hidrolizados proteicos
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Date
2018
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