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Biomedical subjects

F O MacCallum

Publications and source records attributed to F O MacCallum.

At least 19 recordsLinked to original sources

Relationship of encephalomyocarditis virus to cricket paralysis virus of insects.

Cricket paralysis virus was shown to share common antigen(s) with encephalomyocarditis virus (Cardiovirus: Picornaviridae), a virus normally associated with mammals. These viruses must be regarded now as being related strains of one and the same virus. These results pose interesting questions for the taxonomy and ecology of small RNA viruses.

Animals

Immunofluorescence staining for the diagnosis of herpes encephalitis.

Direct immunofluorescence staining for herpes simplex virus was applied to cryostat sections of 43 specimens removed at brain biopsy. Herpes antigen was found in 10 specimens and virus was isolated from them. Antigen was found in one specimen from which virus was not isolated. Two specimens from which virus was isolated gave equivocal fluorescence. Thirty specimens gave no fluorescence or live virus. Immunofluorescence provided a diagnosis in three hr compared with 24-42 hr for virus isolation. Indirect immunofluorescence staining was applied to sections of brain removed at necropsy and fixed in formalin. Herpes antigen was found in sections of six of the 12 brains examined.

Animals

Hepatitis.

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Blood Transfusion

Treatment of zoster with idoxuridine in dimethyl sulphoxide. Results of two double-blind controlled trials.

The antiviral effect of 5% idoxuridine in dimethyl sulphoxide intermittently applied and of 40% idoxuridine in dimethyl sulphoxide continuously applied for four days to the lesions in patients with zoster of recent onset was studied in two double-blind controlled trials. Most, but not all, of the patients receiving intermittent active treatment had pain for a short period only. The effect of continuous treatment was striking: pain had disappeared within nine days in all the patients and healing was accelerated. The results were statistically significant.

Adult