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A gram-positive, chromium (Cr)-resistant bacterial strain (ATCC 700729) was isolated from effluent of tanneries. It was grown in media containing potassium dichromate concentration up to 80 mg ml−1 of the medium. The dichromate reducing capability of the bacterium was checked by estimating the amount of Cr VI in the medium before and after introduction of(More)
Epidemiological studies indicate that tobacco smoking can be protective against neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD). The objective of the present study was to examine the changes in gene expression induced by chronic oral nicotine administration (100 mug/ml in 2% saccharin for 14 days), with special(More)
Expression of nuclear retinoic acid receptors (RAR-alpha, beta and gamma) was examined by Northern blots in rat lung, liver, and adipose tissue. Three transcripts of approximate sizes 7.3, 3.7, and 2.8 Kb were detected in adipose tissue. In contrast to adipose tissue only 3.7 and 2.8 Kb mRNA species were detected in liver and lung. Two RAR-beta gene(More)
The multitude of biological effects of the vitamin A metabolite, retinoic acid, are mediated by nuclear retinoic acid receptors (RARs), which are members of the steroid/thyroid hormone receptor superfamily. RAR-alpha, -beta, and -gamma are encoded by three genes from which multiple isoforms can be generated. Recent studies suggest that the expression of at(More)
Three protozoa belonging to generaEuglena. Vorticella andStylonychia collected from industrial wastes were cultured in a medium containing inorganic salts, basically meant for the growth of algae. Protozoa showed rapid growth in the medium. Hexavalent chromium (K2Cr2O7) at a concentration of 5 μg/L in the medium adversely affected the growth of protozoa. At(More)
Three bacterial strains were isolated from effluents of leather (CMBL Cr13, CMBL Cr14) and steel (CMBL Cr15) industries for their possible use in chromium(VI) detoxication of industrial waste. CMBL Cr13 was found to tolerate chromium(VI) up to a concentration of 45 g/L in the medium, while CMBL Cr14 and CMBL Cr15 could tolerate up to 40 g/L. These bacteria(More)
Retinol deficiency resulted in decreased mRNA levels for cellular retinol-binding protein (CRBP) in the lungs and the testes. The level of lung CRBP mRNA increased 2.3-fold one hour after oral administration of retinoic acid to retinol deficient rats. In contrast, testicular CRBP mRNA level was not influenced. Our data indicate that retinoic acid regulates(More)
A group of male rabbits was starved for 7 days. Their blood samples were collected, before and after the starvation period. Six rabbits were slaughtered for the recovery of livers, while the rest were refed for the next 7 days, at the end of which their blood samples were collected and livers taken out for various analyses. After 7 days of starvation, the(More)
The effects of three retinoids, all-trans-retinoic acid (all-trans-RA), 13-cis-RA, and etretin were examined on mRNA abundance of nuclear retinoic acid receptors (RAR-alpha, beta, and gamma) in lung and liver of retinol deficient and chow fed rats. All-trans-RA increased lung RAR-beta mRNA levels 5 or 11-fold in chow fed and retinol deficient rats,(More)
Industrial effluent from a tannery was used for the growth of algae in a medium containing various inorganic salts. Growth of algal cells became visible after 7 d. Two species of protozoa were observed to proliferate in the algal culture containing no organic supplement in the medium. The culture was kept bacteria-free by the use of antibiotics and was(More)