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Staphylococcus aureus cell wall stress stimulon gene-lacZ fusion strains: potential for use in screening for cell wall-active antimicrobials
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Steidl R Pearson S Stephenson RE Ledala N Sitthisak S Wilkinson BJ Jayaswal RK 《Antimicrobial agents and chemotherapy》2008,52(8):2923-2925
lacZ fusion strains were constructed using the promoters of five cell wall stress stimulon genes: pbp2, tcaA, vraSR, sgtB, and lytR. All fusion strains were induced only in the presence of cell wall-active antibiotics, suggesting the potential of these strains for use in high-throughput screening for new cell wall-active agents. 相似文献
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Rosiglitazone-induced granulomatous hepatitis 总被引:3,自引:0,他引:3
Dhawan M Agrawal R Ravi J Gulati S Silverman J Nathan G Raab S Brodmerkel G 《Journal of clinical gastroenterology》2002,34(5):582-584
Granulomatous hepatitis has many causes. Drugs are an important etiologic factor. Several oral hypoglycemic agents are available for treatment of type II diabetes. Rosiglitazone, a thiazolidinedione, is a newer agent in this class. It has not been shown to be hepatotoxic in the premarketing trials. However, a few case reports have implicated it as a cause of acute hepatocellular injury. The authors report a case of granulomatous hepatitis associated with use of rosiglitazone. Liver function tests should be done regularly to monitor patients on this medication. 相似文献
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Mir Zahoor Gul Sambamurthy Chandrasekaran Manjulatha K Mohd Yasin Bhat Radheshyam Maurya Insaf Ahmed Qureshi 《Nutrition and cancer》2016,68(7):1210-1224
Artemisia nilagirica (Clarke) is a widely used medicinal herb in Indian traditional system of medicine. Therefore, the present study was designed to evaluate the effects of A. nilagirica extracts/fractions on inhibition of proliferation and apoptosis in a human monocytic leukemia (THP-1) cell line. The crude extracts (A. nilagirica ethyl acetate extract [ANE] and A. nilagirica methanolic extract [ANA]) showed cytotoxic activity toward THP-1 cells with the IC50 values of 38.21 ± 7.37 and 132.41 ± 7.19 µg/ml, respectively. However, the cytotoxic activity of active fractions (ANE-B and ANM-9) obtained after column chromatography was found to be much more pronounced than their parent extracts. The IC50 values of ANE-B and ANM-9 were found to be 27.04 ± 2.54 µg/ml and 12.70 ± 4.79 µg/ml, respectively, suggesting greater susceptibility of the malignant cells. Cell cycle analysis and terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick-end-labeling (TUNEL) assay revealed that inhibition of cell growth by A. nilagirica fractions on THP-1 cells was mediated by apoptosis. Active fractions of A. nilagirica increased the expression levels of caspase-3, ?7, and poly-ADP-ribose polymerase (PARP), a critical member of the apoptotic pathway. These results suggested that active fractions of A. nilagirica may play a promising role in growth suppression by inducing apoptosis in human monocytic leukemic cells via mitochondria-dependent and death receptor-dependent apoptotic pathways. 相似文献
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