title: Endogenous antioxidant defense induction by melon superoxide dismutase reduces cardiac hypertrophy in spontaneously hypertensive rats.
abstract: We assessed the influence of SODB, a melon superoxide dismutase (SOD), on left ventricular (LV) hypertrophy in SHR. SODB (4 or 40U SOD) was given orally for 4 or 28 days to SHR. For each treatment period, LV weight index (LVWI) and cardiomyocytes size were measured. SOD, glutathione peroxidase (GPx) and catalase expressions, and LV production and presence of superoxide anion were determined. Pro-inflammatory markers were also measured. SODB reduced LVWI and cardiomyocytes size after 4 or 28 days. Cardiac SOD and GPx increased by 30-40% with SODB. The presence but not production of superoxide anion was significantly reduced by SODB. No effect of SODB was detected on inflammatory status in any group. The beneficial effect of SODB on cardiac hypertrophy seems to be related to the stimulation of endogenous antioxidant defense, suggesting that SODB may be of interest as a dietary supplementation during conventional antihypertensive therapy.
authors.affiliation: UMR 204 - Prévention des Malnutritions et des Pathologies Associées, Université Montpellier 2 , Montpellier , France .
authors.forename: Julie
authors.initials: J
authors.lastname: Carillon
authors.forename: Caroline
authors.initials: C
authors.lastname: Rugale
authors.forename: Jean-Max
authors.initials: JM
authors.lastname: Rouanet
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Cristol
authors.forename: Dominique
authors.initials: D
authors.lastname: Lacan
authors.forename: Bernard
authors.initials: B
authors.lastname: Jover
mesh_terms: D000818:Animals; D000959:Antihypertensive Agents / Q000494:pharmacology; D000975:Antioxidants / Q000378:metabolism*; D001794:Blood Pressure / Q000187:drug effects; D006332:Cardiomegaly / Q000188:drug therapy*; D002374:Catalase / Q000378:metabolism; D019662:Cucurbitaceae / Q000201:enzymology*; D005979:Glutathione Peroxidase / Q000378:metabolism; D006973:Hypertension / Q000188:drug therapy / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D051381:Rats; D011918:Rats, Inbred SHR; D013482:Superoxide Dismutase / Q000378:metabolism* / Q000494:pharmacology; D013481:Superoxides / Q000378:metabolism
chemical_list: D000959:Antihypertensive Agents; D000975:Antioxidants; D013481:Superoxides; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase
keywords: Antioxidant enzymes; blood pressure; inflammation marker; superoxide anion