Teratogenic effect of tribenuron-methyl on chick embryos

The herbicide tribenuron-methyl was tested for its teratogenic effect in chicken embryos. Five different concentrations were used in the study, the middle of which was equivalent to that applied in field practice [0, 5, 10, 20, 40 and 80 ppm]. Embryonated chicken eggs were treated by immersion in aqueous dilutions of herbicide on day 6 of incubation. The eggs were opened on the 20th day of incubation, and the survival embryos subjected to morphological, visceral, and skeletal examinations. Alkaline phosphatase activity was measured in leg bones; cervical and thigh muscles. In addition, the electrophoretic pattern of proteins in cervical and thigh muscles was studied. Results indicated a decrease in survival percentage at the highest concentration; no external or visceral anomalies, but delayed ossification and extra-rib were the only observed skeletal anomalies. The specific activity of bone alkaline phosphatase was correlated significantly with tested concentrations

Determination of some heavy metals in the common carp fish (cyprinus carpio)

Cadmium, zinc, copper, chromium and lead were determined in muscles, and liver of common carp [C. carpio]. Results showed that the concentrations of these metals in the muscles were significantly lower than their levels in liver. Concentrations of lead and cadmium were the lowest among measured metals in muscles or liver. The level of lead in muscle and liver was nearer to the lower limit permitted for lead in human food. While, cadmium level in the muscles was at the upper concentration limit allowed for cadmium in fish muscles used as human food but in the liver exceed the allowable limits. A significant negative [P

Histopathological changes in liver and kidneys of male albino rat due to tribenuron- methyl

Histopathological changes were detected in liver and kidneys of male rats Rattus norvegicus var. albus following treatment with tribenuron- methyl. Rats were given orally tribenuron-methyl technical or formulation once per 48 hours as 5, 25, 50 and 100 mg/kg b.w over 10 days. Acute hepatitis was the common feature among all tested doses represented by focal necrosis and proliferation of Kupffer cells with infiltration of mononuclear cells in liver. Acute nephritis showed as degeneration in kidney tubules without seeing any phagocytes, also acute interstitial nephritis at 25 and 100 mg/kg b.w of the formulation and technical form, respectively. The changes seem to be dose related

Macro- and micromorphology of centaurium pulchellum [Sw.] druce growing in Egypt

The detailed macro-and micromorphological characters of the stem, leaf, root and flower of Centaurium pulchellum [Sw.] Druce growing in Egypt have been studied in order to find out the diagnostic features which can help in their identification in both entire and powdered forms