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1.
Arq Bras Cardiol ; 70(2): 87-91, 1998 Feb.
Article in Portuguese | MEDLINE | ID: mdl-9659714

ABSTRACT

PURPOSE: To study the effect of egg plant on endothelium-dependent relaxation, and plasma lipids in hypercholesterolemic rabbits, and to assess influence of this plant on the malondialdehyde (MDA) content of LDL particles and the arterial wall. METHODS: Thirteen male rabbits were randomly assigned to control (C), hypercholesterolemic (H) and egg plant (E) treated groups (n = 10 each). The H and E rabbits were fed a diet supplemented with cholesterol (0.5%) and coconut oil (10%) for 4 weeks. In addition, group E received 10 mL of the fruit juice/day during the last 2 weeks. The animals were killed and the aorta removed to measure MDA content and the endothelium dependent relaxation responses. Total plasma cholesterol, VLDL, LDL, HDL and triglyceride levels were determined using commercial kits. MDA was quantified in native and oxidized LDL and in the arterial wall. RESULTS: After 4 weeks, the E group rabbits had a significantly lower weight, plasma cholesterol, LDL, triglyceride and aortic cholesterol content than group H(p < 0.05). The MDA content that was significantly increased in the LDL particles and in the arterial wall of H rabbits was reduced in the E group (p < 0.05). Endothelium-dependent relaxation were significantly higher in the E group compared H group rabbits (p < 0.05). CONCLUSION: In hypercholesterolemic rabbits egg plant juice significantly reduced weight, plasma cholesterol levels, aortic cholesterol content and the MDA concentrations in native-oxidized LDL and in the arterial wall and increased the endothelium-dependent relaxations.


Subject(s)
Endothelium, Vascular/physiopathology , Fabaceae/therapeutic use , Hypercholesterolemia/therapy , Lipid Peroxidation/physiology , Lipids/blood , Phytotherapy , Plant Extracts/therapeutic use , Plants, Medicinal , Animals , Body Weight , Fabaceae/chemistry , Hypercholesterolemia/physiopathology , Male , Malondialdehyde/blood , Plant Extracts/chemistry , Rabbits
2.
Arq. bras. cardiol ; 70(2): 87-91, fev. 1998. tab, graf
Article in Portuguese | LILACS, Sec. Est. Saúde SP | ID: lil-214052

ABSTRACT

OBJETIVO - Estudar o efeito do suco da berinjela sobre os lípides plasmáticos, o colesterol tecidual, a peroxidaçäo lipídica das nativas, oxidadas e da parede arterial e o relaxamento dependente do endotélio, em coelhos hipercolesterolêmicos. MÉTODOS - coelhos foram separados em grupos controle (GC), hipercolesterolêmico (GH) e berinjela (GB), (n=10). Os animais do GC foram alimentados com raçäo normal, o GH e GB com raçäo acrescentada de colesterol (0,5 por cento) e gordura de babaçu (10 por cento) durante 30 dias. Ao GB acrescentou-se suco de berinjela, nos últimos 15 dias do experimento. Os lípides plasmáticos foram medidos através de kits enzimáricos, a peroxidaçäo lipídica pela dosagem do malondialdeído (MDA) e o relaxamento dependente do endotélio, por curvas de concetraçäo efeito pela acetilcolina e nitroprussiato. RESULTADOS - O peso dos animais foi menor no GB em relaçäo ao GC e GH (p<0,05). O colesterol total plasmático, as LDL e os triglicérides que se elevaram no GH, reduziram-se em 19 'por cento', 29 'por cento' e 38 'por cento', respectivamente no GB (p<0,05). O colesterol tecidual foi menor no GB (50 por cento) em relaçäo ao GH (p<0,05). Nos animais do GB ocorreu reduçäo significante do teor de MDA nas LDL nativas (56 por cento) e oxidadas (22 por cento), assim como na parede arterial (30 por cento) (p<0,05). O relaxamento máximo depende do endotélio, elevou-se significantemente em 28 'por cento' no GB em relaçäo ao GH (p<0,05). CONCLUSÄO - O suco de berinjela administrado a coelhos hipercolesterolêmicos reduziu significantemente o peso corpóreo, o colesterol total, as LDL plasmáticas, os triglicérides, o colesterol tecidual, a peroxidaçäo lipídica das LDL nativas, oxidadas e da parede arterial, assim como aumentou o relaxamento dependente do endotélio.


Subject(s)
Animals , Rabbits , Male , Plant Extracts/therapeutic use , Cholesterol , Hypercholesterolemia/drug therapy , Fabaceae/therapeutic use , Lipid Peroxidation , Lipids/blood
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