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Biomedical subjects

T Cleary

Publications and source records attributed to T Cleary.

26 records · Page 2Linked to original sources

Quantitation of Candida albicans polysaccharide using an enzyme-linked immunosorbent assay.

The enzyme-linked immunosorbent assay (ELISA) for candida polysaccharide antigen in serum was developed by using double antibody sandwich technique. It was found that serum constituents substantially interfered with the assay. The interference was successfully decreased by heating serum in the presence of EDTA which precipitated interfering serum protein. In addition, candida antigen may be liberated from antibody complexes. The candida polysaccharide antigen in the supernatant was precipitated with ethanol and resuspended in the buffer containing gelatin. A maximum sensitivity of 10 ng/ml was found in the assay using this procedure. This procedure of serum treatment may have potential applications for the detection of other polysaccharide antigens in serum.

Alkaline Phosphatase↗

Multiple-dose amikacin kinetics in pediatric oncology patients.

Amikacin kinetics was studied in 8 pediatric oncology patients who received the drug by intravenous infusion over 30 or 60 min at a dose of 5 mg/kg every 6 or 8 hr. This regimen is recommended but, due to patient variability, patients should be monitored. Dosing intervals during 1 or 2 and 3 or 4 days of therapy were studied with serum samples collected before and at the end of the infusion and serially to the end of the dosing interval. The data appeared consistent with and were analyzed according to 1-compartment model. An equation describing serum concentration with time for the multiple-dose case was fit to each patient's multiple-interval data with nonlinear regression. Half-life averaged 1.2 hr. volume of distribution 0.24 l/kg, and total body clearance 109 ml/min/1.73 m2 or 2.51 ml/min/kg. The volume of distribution and the clearance are greater than reported for adults and probably account for the larger dose needed to achieve and maintain therapeutic levels. Although the total daily dose was greater than previously reported, there were no signs of toxicity, although therapuetic concentrations were maintained.

Adolescent↗

Enzyme immunoassay of hepatitis associated antigen (HAA).

Due to its high sensitivity, radioimmunoassay has become of great importance in the detection and measurement of levels of proteins and steroids in body fluids. However, this method involves the use of expensive equipment and radioactive material. Herein is described an alternate method to radioimmunoassay, which uses an enzyme-labeled rather than a radioactively-labeled antibody. An enzyme immunoassay procedure, the Cordia HAA-enzyme Immunoassay, for the detection of hepatitis-associated antigen has been evaluated. With this technique a sandwich type immunoassay with an alkaline phosphatase tagged second antibody is used. The presence of antigen is detected by the p-nitrophenyl phosphotase activity of the bound enzyme. In 1083 clinical samples from patients of Jackson Memorial Hospital, only 19 discrepant results were found when tested by both the Cordia and the Ausria II methods. Eight had sufficient sera for retesting, yielding two positive Cordia, negative Austia; one negative Cordia, positive Ausria; one borderline positive; and four unconfirmed false positives by Cordia.

Animals↗

Mycoplasma hominis septic thrombophlebitis in a patient with multiple trauma: a case report and literature review.

Mycoplasma hominis was recovered from the site of a septic thrombophlebitis on the left cephalic veins of a patient with pelvic and other multiple trauma. The organisms were initially isolated from routine cultures in conventional blood agar media incubated anaerobically. The absence of other demonstrable pathogens and the patient's serologic response to the isolate support the role of the organism as the cause of this previously unreported mycoplasmal infection. M. hominis should be considered a possible cause of sepsis in selected cases of infections following pelvic trauma or manipulations of the genitourinary tract.

Adult↗

Evaluation of a mannitol-salt-oxacillin-tellurite medium for the isolation of methicillin-resistant Staphylococcus aureus from contaminated sources.

A mannitol-salt medium supplemented with 0.002% tellurite (MSOT) supported the growth of 104 of 109 strains of methicillin-resistant Staphylococcus aureus (MRSA) while suppressing 74 of 102 strains of mannitol-positive, methicillin-resistant coagulase-negative staphylococci. MSOT was equally or more sensitive and more differential than a similar formulation without tellurite for the isolation of MRSA from the skin and nares of hospitalized patients. Only S. haemolyticus produced dark gray-to-black colonies on MSOT similar to those of MRSA. MSOT is a useful adjunct to other nonselective culture formulations for the isolation of MRSA from contaminated sources.

Axilla↗