objective(s):  there is a rising use of gold nanoparticles (aunps) in goods and in the medical fields but there is concern about the toxicity of them. so in this study spherical aunps with 3 different concentrations were applied for investigating their effects in vivo.   materials and methods:  40 male albino mice were randomly divided into sham, control, 25 ppm, 50 ppm, 100 ppm groups and were...

Background: Phenolic plant extracts are added as antioxidants in meat to prevent lipid oxidation, but depending on the concentration applied, may affect proteins either through covalent interactions or by serving as a prooxidant. Methods: Brine-injected pork chops prepared with green tea extract (25-160 ppm gallic acid equivalents (GAE)), or maté extract (25-160 ppm GAE) and stored (5 °C, 7 day...

In our laboratory, chronically feeding cadmium to groups of rats has been reproducibly associated with average increases of 15 to 20 mm Hg in systolic pressure. A total of 497 female Long-Evans rats were continuously provided with drinking water fortified with five essential elements and containing from 0.01 to 50 ppm cadmium, as the acetate, from weaning for as long as 30 months. These rats, p...

At the beginning of the recording, atrial tachycardia (AT) can be observed with 1:1 conduction at ventricular rate 140 bpm (upper track). At the spontaneous termination of the tachycardia, atrial-ventricular pacing at 45 bpm (lower rate) and after two cycles atrialventricular pacing at 100 beats/min (upper track) can be observed. The rate drop response was activated: drop size 25 ppm, drop rate...

Extraction of carotenoids was carried out from Calendula officinalis (English marigold) flowers and their effects on the oxidation stability of mustard oil under light storage was determined. Four solvents viz., hexane, acetone, ethanol and tolune were used for extraction of total caroteinoids.The carotenoid extract of the calendula flowers obtained was incorporated in mustard oil at 10, 25 and...

Propylene oxide (1,2-epoxypropane) is a nasal toxicant and weak site-of-contact carcinogen in the rodent. The current study was aimed at providing quantitative information on upper respiratory tract (URT) dosimetry of this vapor. Since depletion of nasal non-protein sulfhydryls (NPSH) may be important in the toxicity of this vapor and may serve as a biomarker for delivery of propylene oxide to ...

Propylene oxide is a nasal toxicant and weak site-of-contact carcinogen in the mouse and rat. To aid in inhalation risk assessment of this vapor and to provide data for comparison to the rat, the current study was aimed at providing quantitative information on upper respiratory tract (URT) dosimetry of this vapor in the mouse. Toward this end, uptake efficiencies of propylene oxide were measure...

Benzene is a highly toxic organic contaminant having carcinogenic potential and a serious ground water contaminant. Refinery industry is a major source of benzene contamination in the environment. The present paper focuses on biodegradation of benzene under anaerobic condition by using enriched microbial consortium. Enriched bacterial isolates, identified by 16S rRNA sequencing technique were t...

U groh shells and coir (Cocos nucifera L) have the potential as antioxidants. This study aimed to evaluate IC50 value of young coconut ethanol extract an antioxidant. The DPPH technique was used for extraction antioxidant activity testing at concentrations 6.25;12.5; 25; 50, 100 ppm. extracts shell generated with values 11.811 ppm 42.483 ppm, respectively, were classified very active (50 ppm). ...

Garlic oil (GO) and allyl alcohol (AA), both derived from alliin in garlic using different preparation methods, cause potent growth inhibition in yeasts. GO and AA inhibited Candida utilis ATCC42416 in different ways: GO has fungistatic activity while AA has fungicidal activity. GO and AA have almost identical antimicrobial potencies against the indicator yeast, with minimum inhibitory concentr...