Problem statement: Cellular drug resistance to anticancer agents is major obstacle in cancer chemotherapy and the mechanisms by which these MDR cells possess for protecting themselves to survive prolonged exposure to cytotoxic agents still debating. The study aimed to clarify the role of P-glycoprotein (Pgp) and enhanced drug sequestration in lysosomes to confer the multidrug resistance K562 ce...

BACKGROUND Trichomonas vaginalis is a parasitic protozoan which causes most common non viral sexually transmitted disease trichomoniasis. Direct microscopic examination of vaginal fluid remains the most widely used diagnostic test. Although, wet mount examination is the most cost-effective diagnostic test, but it has low sensitivity resulting in under diagnosis of the disease. Therefore, to ove...

Purpose: To image leukocyte adherence to the vascular endothelium and extravasation into surrounding tissues in neovascularized corneas using acridine orange, a selective DNA stain, in rats Methods: Corneal neovascularization was induced by placing two sutures in the cornea of one eye of 12 Long-Evans rats. One week later, acridine orange (4 mg/kg) was injected via the tail vein and the eyes we...

AIMS In view of recent findings that a multidrug efflux pump CmeABC exists in Campylobacter jejuni, 391 C. jejuni and 52 Campylobacter coli of human and animal origin were examined for a multidrug resistance phenotype. MATERIALS AND METHODS The MICs of ampicillin, chloramphenicol, ciprofloxacin, erythromycin, kanamycin, tetracycline, cetrimide, triclosan, acridine orange, paraquat and ethidiu...

1 Institute for Science and Public Policy, The University of Oklahoma, Norman, Oklahoma, USA 2 Department of Zoology, National Food Safety and Toxicology Center and Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA 3 Department of Forest Science, Oregon State University, Corvallis, Oregon, USA 4 Department of History, The Ohio State University, Columbus, ...

brucellosis is one of the most common zoonotic diseases in iran and human brucellosis is endemic in all parts of the country. growth of brucella is slow and blood culture of these bacteria by use of classical methods is time-consuming. furthermore, in endemic area culture is required for definitive diagnosis. in the present study, direct urease test and acridine orange staining were tried on th...

In view of the importance of a rapid aetiological diagnosis in septicaemia, we compared the results of subculture, Gram staining and acridine orange staining in the detection of positive blood cultures. The study was based on 1013 blood cultures of which 138 were positive by culture. The three techniques were applied 12 h after the specimen was taken in 210 instances, at 24 h in 540 instances a...