Experimental measurements of the diffusion coefficient of human methemoglobin were made at 25 degrees C with a modified Stokes diaphragm diffusion cell. A Millipore filter was used in place of the ordinary fritted disc to facilitate rapid achievement of steady state in the diaphragm. Methemoglobin concentrations varied from approximately 5 g/100 ml to 30 g/100 ml. The diffusion coefficient in t...

OBJECTIVES Diffusion tensor imaging (DTI) is an MRI modality for characterizing the property, microstructural organization and function in tissues such as the brain and spinal cord. Prior to this investigation, DTI had not been adapted for studies of the temporomandibular joint (TMJ) disc. Objectives were to test the feasibility of DTI to evaluate the porcine TMJ disc and to use DTI to observe ...

The antibacterial activity of the root, stem and leaf extracts of Excoecaria agallocha L. was tested against the test organisms Bacillus subtilis, Escherichia coli, Klebsiella pneumoniae, Salmonella spp., Shigella sonnei and Staphylococcus aureus. The activity was tested both by agar well diffusion and disc diffusion methods. It was found that the extracts were very effective in controlling the...

The in vitro antimicrobial activity of Cassia didymobotrya and Phlogacanthus thyrsiflorus leaf extracts were studied against selected bacteria and fungi following Agar disc diffusion method. Leaves were extracted using distilled water, methanol and ethyl acetate. Three different concentrations were applied to the disc (100μg, 250μg and 500μg/disc) for each extracts. While the aqueous extracts o...

conclusions in our study, inducible clindamycin resistance rate was 4%; so it is necessary to conduct d-test regularly by disc diffusion for this bacterium. resistance to erythromycin, clindamycin, ciprofloxacin and gentamicin was significantly higher in mrsa isolates than methicillin susceptible staphylococcus aureus (mssa), although the methicillin resistance prevalence was low. background st...

staphylococcus epidermidis is the most important member of coagulase negative staphylococci responsible for community and hospital acquired infections. most clinical isolates of s. epidermidis are resistant to methicillin making these infections difficult to treat. in this study, correlation of methicillin resistance phenotype was compared with methicillin resistance (meca) gene carriage in 55 ...

Ethanolic extract of roots and aerial parts of Achyranthes aspera was investigated for its antibacterial activity against Bacillus subtilis, Bacillus pumilus, and Proteus vulgaris and anti fungal activity against Cryptococcus neoformans, Aspergillus flavus at 100 mg/disc using diffusion method. The comparative studies shown that ethanolic extract of roots and aerial parts of Achyranthes aspera ...

OBJECTIVE We identified a poor clinical response to treatment of cholera with a single 1 g dose of ciprofloxacin, a standard treatment for cholera. METHODS To determine reasons for the poor response and better therapeutic approaches we examined the minimal inhibitor concentration (MIC, n = 275) and disc-diffusion zone sizes (n = 205) for ciprofloxacin and nalidixic acid of V. cholerae O1 stra...

Rifaximin is a rifampicin derivative, poorly absorbed by the gastro-intestinal tract. We studied the in vitro susceptibility to rifamixin of 1082 Clostridium difficile isolates; among these, 184 isolates from a strain collection were tested by an in-house rifaximin disc (40 µg) diffusion test, by an in-house rifaximin broth microdilution test, by rifampicin Etest and by rpoB gene sequencing. In...

BACKGROUND Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder, which may result from alteration of the gastrointestinal microbiota following gastrointestinal infection, or with intestinal dysbiosis or small intestinal bacterial overgrowth. This may be treated with antibiotics, but there is concern that widespread antibiotic use might lead to antibiotic resistance. S...