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Biomedical subjects

W M Kirber

Publications and source records attributed to W M Kirber.

5 recordsLinked to original sources
PubMed1980

A permeability defect of the retinal pigment epithelium. Occurrence in early streptozocin diabetes.

The permeability of the blood-retina barrier was tested in rats with early streptozocin-induced diabetes. Two different tracer substances were used: fluorescein sodium and horseradish peroxidase (HRP). After intravenous administration, the ocular distribution of fluorescein was studied by fluorescence microscopy of freeze-dried tissue. A permeability defect of the pigment epithelium to fluorescein was present in one half of the rats four weeks after induction of diabetes. The dye entered the pigment epithelial cells but could not be detected among the photoreceptors. The only dyd visible in neural retina was within the retinal blood vessels. For HRP, no fault whatsoever in the blood retina barrier was found: there was no increase of vesicular uptake by the pigment epithelial cells; the tight junctions between pigment epithelial cells were intact as were those between the endothelial cells of retinal blood vessels.

Animals↗
PubMed1979

Unusual presentation of ocular toxocariasis in friends.

Two cases of presumed ocular toxocariasis are reported in 19-year-old college students. One presented with an acute exudative intraocular inflammation, with marked peripheral eosinophilia, while the other had only minimal inflammatory changes of the disc and vitreous. Both had elevated Toxocara antibody titers by the enzyme-linked immunosorbent assay (ELISA) method. The simultaneous occurrence of ocular toxocariasis in friends and the early presentation and detection of their ocular lesions make these 2 cases interesting. The presence of positive laboratory data with only minimal clinical disease in one of the cases suggests that ocular toxocariasis may be more common than is usually appreciated.

Adult↗