As it was previously reported, black spot development in the skin of Hass avocado has been related to a decreased antioxidant defense system. The aim this study investigate effect different postharvest storage conditions on controlling targeting their system (non-enzymatic and enzymatic) skin. Four treatments (T1: regular air (RA) at 5 °C for 40 d; T2: controlled atmosphere (CA) 4 kPa O2 6 CO2 ...

The current study was designed to evaluate lipid peroxidation (via malondialdehyde) levels, the superoxide dismutase (SOD) gene expression profile, and SOD enzyme activity in tomato plants (Lycopersicum esculentum L.) subjected to different time periods of cold stress (control, 2, 4, 6, 8, and 10 days). Results revealed that maximum lipid peroxidation occurred in plants exposed to cold stress f...

Background: A sequence of time-dependent changes can affect the brainchr('39')s functional capacity. Aims: This study aimed at investigating the effects of forced aerobic exercise (FAE) versus the rosemary extract (RE) on the learning abilities and oxidative stress modulation in rats. Methods: Young and old rats received daily FAE and RE for 3 months. Using the passive avoidance (PA) test, we...

The fungal strain Humicola lutea 103 produces a naturally glycosylated Cu/Zn SOD. To improve its yield, the effect of an increased concentration of dissolved oxygen (DO) on growth and enzyme biosynthesis by the producer, cultivated in a 3 l bioreactor, was examined. Exposure to a 20% DO level caused a 1.7-fold increase of SOD activity compared to the DO-uncontrolled culture. Maximum enzyme prod...

Down syndrome or trisomy 21 is the single most common genetic cause of mental retardation. It has been postulated that there is oxidative stress in Down syndrome due to over expression of superoxide dismutase 1 (SOD -1) , an antioxidant enzyme which is coded on chromosome 21(21q22.1). The present study included 31 clinically diagnosed children with Down syndrome. The diagnosis of trisomy 21 was...

Excess superoxide has been implicated in pulmonary hypertension (PH). We previously found lung overexpression of the antioxidant extracellular superoxide dismutase (EC-SOD) attenuates PH and pulmonary artery (PA) remodeling. Although comprising a small fraction of total SOD activity in most tissues, EC-SOD is abundant in arteries. We hypothesize that the selective loss of vascular EC-SOD promot...

In Cameroon, tomato yields remain low due to attack by pathogens and insects. Phytophtora infestans (PI) is a phytopathogenic fungus responsible for the downy mildew of tomatoes, fungal disease enormous economic losses. To contribute search means control, stimulatory effect defence system extracts some plants was evaluated. Tomato were treated with aqueous macerates Callistemon citrinus (C. cit...

BACKGROUND Physical activity is associated with reduced risks of many chronic diseases. Data collected on physical activity in large epidemiological studies is often based on paper questionnaires. The validity of these questionnaires is debated, and more effective methods are needed. OBJECTIVE This study evaluates repeated measures of physical activity level (PAL) and the feasibility of using...

OBJECTIVE Fibromyalgia syndrome (FMS) is a pain syndrome in which common pain in muscle-skeletal system, sleeping disorder and fatigue symptoms coexist. The aim of the present study was to determine SOD and GPX enzyme levels in FMS as well as to investigate possible associations between FMS and Ala9Val polymorphism of MnSOD2 and Pro198Leu polymorphism of GPX1. PATIENTS AND METHODS The study i...

In a series of experiment, the response of two contrasting potato species, namely,  Solanum acaule (tolerant) and Solanum tuberosum cv. Agria (intolerant) to salt (80 mM NaCl) and drought stress (15% polyethylene glycol;PEG) was studied in vitro. Furthermore, the role of acetyl salicylic acid (ASA) (1 and 10 µM) in alleviating oxidative stress was investigated. In Agria cultivar, NaCl and PEG r...