Acute and chronic toxicity tests were conducted on green mussel (Perna viridis) to determine the adverse effects of lead (Pb). Exposure of organisms to acute toxicity test for 96 h and lethal concentration (LC(50)) was the endpoint of the test. Acute toxicity for 96-h LC(50) and 95% confidence intervals of P. viridis was 2.62 ± 0.12 (2.62-3.24) mg/L Pb. Chronic toxicity tests revealed that surv...

the effects of chronic administration of lithium, on acute toxicity of chlorpromazine (cpz) in male albino mice was studied and the ldso values were determined from dose-probit curves. tfie results showed that in lithium pretrealed animals (anmials consumed drinking water containing 600mg/l lithium chloride for 10 days) the ld50 value (the dose corresponding to probit 5) of cpz increased signif...

stachys lavandulifolia ( s. lavandulifolia ) is a plant that has been widely used as an herbal medicine in iran. unfortunately, despite the prevalent medicinal uses of the plant, there are no reports on the possible toxic effects of s. lavandulifolia . in the present study the potential toxicity of s. lavandulifolia after acute and sub-chronic administration in rats was evaluated. rats were ora...

Pesticides have been implicated in widespread amphibian declines. We assessed acute and chronic toxicity of two widely used herbicides to larval New Mexico (Spea multiplicata) and Plains (S. bombifrons) spadefoots from cropland and native grassland playas. Roundup WeatherMAX (WM) toxicity estimates (48- and 216-h LC(50); 48-h LC(1)) for both species were similar to environmental concentrations ...

Industrial wastes may produce leachates that can contaminate the aquatic ecosystem. Toxicity testing in acute and chronic levels is essential to assess environmental risks from the soluble fractions of these wastes, since only chemical analysis may not be adequate to classify the hazard of an industrial waste. In this study, ten samples of solid wastes from textile, metal-mechanic, and pulp and...

BACKGROUND AND PURPOSE Vascular pathology and Alzheimer disease (AD) pathology have been shown to coexist in the brains of dementia patients. We investigated how cognitive impairment could be exacerbated in a rat model of combined injury through the interaction of chronic cerebral hypoperfusion and amyloid beta (Aβ) toxicity. METHODS In Wistar rats, chronic cerebral hypoperfusion was modeled ...

Acute and chronic toxicity of methyl red (untreated) was examined on a freshwater fish Poecilia reticulata, using indices viz; mortality, reduction in RBC counts and their morphological abnormality (poikilocytosis and anisocytosis). Similar studies (acute toxicity) were also made in physicochemically and biologically treated methyl red. Data comparison of these four indices revealed poikilocyto...

the effects of chronic administration of lithium, on acute toxicity of carbamazepine (cbz) in mate albino mice was studied and the ld50 values were determined from dose-probit curves. the results showed that in lithium pretreated animals (animals consumed drinking water contraining 600 mg/l lithium carbonate for 10 days) the ld50 value (the doese corresponding to probit 5) of cbz decreased sign...

Uvaria chamae is used in the treatment of sickle cell crisis Benin. The aim this work to determine safety roots aqueous extract wistar rats. was obtained by maceration. tests for Acute Oral Toxicity (AOT) and Sub-Chronic (SCT) respectively forced gavage a single dose 2000 mg / Kg 200 body weight 28 days were performed on female Wistar animals, serum creatinine, transaminases number white blood ...

BACKGROUND In kidney transplantation, chronic allograft nephropathy (CAN) is the major cause of graft loss. Causes of CAN include chronic rejection and chronic cyclosporine A (CsA) nephrotoxicity. It is necessary to differentiate between these two entities in order to apply the appropriate therapeutic regimen for the individual patient, but this is hampered by the lack of discriminating functio...