The acute toxicity of hexavalent chromium as potassium dichromate (K2Cr2O7) was studied in female albino mice. Reproductive parameters in ovary and uterus and fertility rate were evaluated to investigate the possible effects of chromium intoxication. Seventy-five adult albino mice were used in this study.The mice treated orally with 500 and 1000 ppm of potassium dichromate that dissolved in tap...

The sensitivity and specificity of seven microscopy-based Cryptosporidium oocyst detection methods were compared after application to unconcentrated fecal smears. The seven methods were as follows: (i) a commercial acid-fast (AF) stain (VOLU-SOL) method, (ii) Truant auramine-rhodamine (AR) stain method, (iii) fluorescein-conjugated C1B3 monoclonal antibody (MAb) direct fluorescence method, (iv)...

Lysine and leucine auxotrophic, heterothallic (h+, h-) strains of Schizosaccharomyces pombe were used to obtain chromium (VI)-sensitive and -tolerant mutants by ultraviolet radiation-induced and nitrosoguanidine-induced mutagenesis. The minimal inhibitory concentrations of K2Cr2O7 on YEA media were 225 microM for the wild-type strain CW-6, 125 microM for the sensitive mutant CS-6.51 and 275 mic...

The direct electrophilic no-carrier-added (n.c.a.) aromatic radioiodination was examined using various metal salts in trifluoroacetic acid (TFA) as in situ oxidation agents. Two different types of metal salts were used comprising TFAsoluble (Pb(CH3CO2)4, Mn(CH3CO2)3, KMnO4, Tl(CF3CO2)3, AgCF3SO3) and TFA-insoluble (Ce(CF3SO3)4, RuCl3, FeBr3, K2Cr2O7) salts. Optimization of both labelling system...

Present study was conducted to evaluate the effect of aqueous methanolic extract from Saccharum officinarum on the sporulation and morphology of oocysts of four Eimeria species (Eimeria tenella, E. necatrix, E. mitis, E. brunetti) of poultry. Sporulation inhibition bioassay was used to evaluate the activity of Saccharum officinarum extract (SOE) on the sporulation of coccidian oocysts. In this ...

Hexavalent chromium as K2Cr2O7 (60mg/kgb.w) was administered intraperitoneally to male Sprague Dawley rats. In the thyroid gland, chromium concentration decreased significantly (P<0.01) as compared to the control tissue. Serum FT3 and FT4 levels decreased significantly (P<0.01 and P<0.001 respectively), while serum TSH concentration increased significantly (P< 0.01) than the control. Histologic...

An extracellular beta-glucosidase produced by Monascus purpureus NRRL1992 in submerged cultivation was purified by acetone precipitation, gel filtration, and hydrophobic interaction chromatography, resulting in a purification factor of 92-fold. A 22 central-composite design (CCD) was performed to find the best temperature and pH conditions for enzyme activity. Maximum activity was observed in a...

Objective: Effect of oleanolic acid against hexavalent chromium-induced altered brain energy metabolism associated with oxidative stress was evaluated in the present study. Methods: Swiss albino mice were divided into three groups, Control (n=6), chromium-treated and (OA) supplemented (n=6). The chromium treated group orally administered K2Cr2O7 for 30 days at a dose 10 mg/kg b.w/day. OA supple...