Cytotoxicity of erythromycin base, erythromycin estolate, erythromycin-11,12-cyclic carbonate, roxithromycin, clarithromycin and azithromycin was compared in cultured human non-malignant Chang liver cells using reduction of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide and cellular protein concentration as end points of toxicity. Erythromycin estolate was the most toxic macrolid...

Four types of edible tubercular roots cultivated in Saudi Arabia are analysed through sequential determination of certain essential and toxic trace elements by inductively coupled plasma atomic emission spectrometry (ICP-AES). Comparable runs carried out using both flame and graphite atomic absorption spectroscopy (AAS). Radish proved to contain the highest concentration level of iron (>21 μg/g...

this study was performed to explore the presence of heavy metals in some popular herbal medicines of the iranian market. primarily, this study was planned to do the task by the usp method. in the second step, those plants which contained more than 10 ppm of total heavy metals were analyzed by atomic absorption method. in this study, 43 popular herbal medicines were investigated according to the...

Thirteen of the most common lepidopteran-specific Cry proteins of Bacillus thuringiensis have been tested for their efficacy against newly hatched larvae of two populations of the spiny bollworm, Earias insulana. At a concentration of 100 microg of toxin per milliliter of artificial diet, six Cry toxins (Cry1Ca, Cry1Ea, Cry1Fa, Cry1Ja, Cry2Aa, and Cry2Ab) were not toxic at all. Cry1Aa, Cry1Ja, ...

Hydrogen sulfide is a toxic and odorous compound present in biogas produced by the anaerobic digestion of biosolids and other organic materials. Reactive absorption of hydrogen sulfide into aqueous ferric sulfate solution is a direct process for H S removal and Sulfur recovery. Apart from sulfur, only H O is 2 2 generated in the process and consequently, no waste treatment facilities are requir...

A 3-year-old patient treated with nitroprusside for congestive heart failure had 6.5 mmol/L thiocyanate (toxic, >1.5 mmol/L) and 110 micromol/L cyanide (toxic, >5 micromol/L) present in her blood. At this time a whole-blood glucose concentration assayed on the Nova Stat Profile 5 Plus (Stat Profile) was 25.1 mmol/L. Plasma from that specimen analyzed on a Kodak Ektachem 700 analyzer (E700) indi...

The concentrations of gold in erythrocytes, whole blood, cell-rich plasma, and cell-free plasma were investigated in 17 patients with rheumatoid arthritis undergoing long-term chrysotherapy. Gold estimations were performed with a graphite tube atomic absorption spectrophotometer. Significant quantities of gold were found in isolated erythrocytes of 12 patients. There was no correlation between ...

This study investigated the effects of cypermethrin, a synthetic pyrethroid, on some developmental features of Drosophila melanogaster. Before the experiment the lethal concentration of this insecticide was determined. Cypermethrin solution was applied to Drosophila melanogaster by means of nutrition, by adding it to the culture medium. In the control group no such substance was applied. Our ai...