a greenhouse experiment was performed in the framework of a completely randomized design and a factorial arrangement to evaluate the effect of arbuscular mycorrhizal fungi (amf) on growth and on root antioxidant enzyme changes of two citrus rootstocks (sour orange and rough lemon). the experimental factors were: mycorrhizal treatments at two levels (inoculation with glomus mosseae vs. control) ...

Aging is an universal, intrinsic, progressive, irreversible and deleterious phenomenon. As age advances, several enzymes show an increase, while some decrease and some do not show any change in their activities. These specific alterations in the enzymes must have inflicted a great impact on the process of aging. This process is thought to be related to increase in free radicals generation and o...

Reactive oxygen intermediates have been implicated in lung injury induced by inhaled irritants. The present studies used mice overexpressing Cu/Zn-superoxide dismutase (SOD+/+) to analyze their role in ozone-induced lung inflammation and cytotoxicity. Treatment of wild-type mice with ozone (0.8 ppm, 3 h) resulted in increased bronchoalveolar lavage fluid protein, which was maximal after 24-48 h...

Mediator release from rat peritoneal and human lung mast cells as well as human leukemic basophils was examined to determine whether super-oxide (O(-) (2)) was concomitantly generated. Immunologic or nonimmunologic stimulation of each preparation induced parallel release of histamine and O(-) (2) within 2 min. O(-) (2) production was quantitated by superoxide dismutase (SOD)-inhibitable chemilu...

Quercetin is a typical flavonoid with diverse biological effects, attributable to its free radical scavenging activity. Bioavailability of quercetin aglycone and its glycosides is an important factor for its antioxidant activity in vivo. A severe limitation exists and is imputable to very poor absorption of quercetin when administered orally. To overcome this limitation, development of a value ...

Introduction: Oral Lichen Planus (OLP) is a chronic inflammatory disease of oral mucosa with unknown etiology.Many studies have suggested that increased oxidative stress, an imbalance in the antioxidant defense system maybe involved pathogenesis planus.Aim: The aim this study was to compare tissue levels Super oxide dismutase (SOD) and lipidperoxidation marker Malondialdehyde (MDA) established ...

Nitric oxide (NO) is a bioactive and a multifunctional gaseous molecule signal playing a central role and mediating variety of physiological processes in plants. In this study, the protective effect against chilling stress of exogenously applied sodium nitroprusside (SNP, a NO donor) in Cucumis sativus L. cv ZND407 and cv ZND461 was investigated. The SNP was sprayed over cucumber seedlings usin...

Abdominal aortic coarctation above the renal arteries leads to severe hypertension above the stenotic site and provides a model for simultaneous testing of the effects of increased and decreased pressure and consequently shear stress in the same animal. The effects of increased pressure, per se, on oxidative stress and antioxidant enzyme expression is unknown. We studied the protein expressions...