liver injury induced by viruses, chemicals and drugs can be protected by different medicinal plants. Feijoa sellowiana (Myrtaceae) is an evergreen bush native to southern areas of South America, as well as Iran where the fruits are very popular. Feijoa has shown a potent antimicrobial effect. Morever, the antioxidant activity of total Feijoa extract has also been reported. MDMA or ecstasy is a ...

Electric field stimulation (EFS) relaxes human histamine-precontracted airways in vitro. This relaxation is only partly neurally mediated. Nonneural relaxation has been also shown in blood vessels and is due to the generation of oxygen radicals by EFS. In isolated airways the origin of the nonneural component of the relaxation is not clear. Because exogenous catecholamines are oxidized during E...

The behavior of human omental fat cells in vitro has been examined in order to define conditions under which glucose is converted to glyceride-glycerol and glyceride fatty acids. Synthesis of glyceride fatty acids from glucose reached maximal rates only after several hours of incubation in Krebs-Henseleit bicarbonate buffer, with or without added bovine albumin. Conversion of glucose to glyceri...

Background. Ventricular fibrillation has deleterious metabolic and functional consequences for the heart. This study had two purposes: first, to define the effects of ventricular fibrillation during hypoxia on energy metabolism and accumulation of intracellular Na' and, second, to test whether the occurrence of ventricular fibrillation can be predicted from functional or metabolic parameters. M...

This paper describes ongoing work into a portable mobility aid, worn by the visually impaired. The system uses stereo vision and sonar sensors for obstacle avoidance and recognition of kerbs. Because the device is carried, the user is given freedom of movement over kerbs, stairs and rough ground, not traversable with a wheeled aid. Motion of the sensor due to the walking action is measured usin...

1 1 1 0 20 40 60 Incubation time (min) Incubation time (min) Fig. 1. Metabolism of adenosine (A) and effects of adenosine on (a) total urate synthesis and (b) that de nouo Hepatocytes (3.15 mg dry wt./ml) were suspended in Krebs-Henseleit bicarbonate buffer, containing 5 mM-glucose and 2 m d 14C]formate (0.05 Ci/mol), and incubated at 4OoC in the absence (M, 0) or presence (0,O) of 0.1 mwadenos...

1. The effect of D-aldosterone and dexamethasone on kallikrein release was studied in the isolated rat kidney perfused with modified Krebs-Henseleit buffer. 2. Animals received D-aldosterone or dexamethasone (10 microgram/100 g body weight) daily for 3 days. Their isolated kidneys were then perfused with the same steroids at rates of 2.0-2.5 microgram/min for 30 min. 3. Dexamethasone increased ...

this study was conducted to investigate the hepatoprotective and antioxidant effects of pentoxifylline (ptx) against aflatoxin b1 (afb1) exposure in perfused rat livers by evaluating damage marker enzymes, antioxidant defense systems (glutathione, gsh) and lipid peroxidation (malondialdehyde, mda). sixteen rats were divided randomly into four experimental groups: control, ptx, afb1 and afb1 + p...

T-2 toxin, a trichothecene mycotoxin, is considered to be one of the most toxic compounds that are produced by molds, particularly the Fusarium species. Fusarium species have been recognized as a great agricultural problem. They occur worldwide on a variety of plant hosts and cereal grains. The aim of this study was to investigate T-2 toxin-induced liver injury using in situ perfused rat liver....