A semiquantitative measurement of anti-nuclear antibody using immuno-microfluorimetry

1. Using microfluorimetry, the strength of fluorescence was measured on fluoresceinated anti-nuclear antibody of SLE sera. The indirect "Sandwich" method was applied using human peripheral lymphocytes as substrates tissue. 2. The results of using three FITC-labelled anti-human IgG conjugates of different types were compared with each other. 3. More specific and more consistent results were obtained with conjugates with a lower F/P ratio and lower antibody and protein concentration that those in the case of conjugates with a higher F/P molar ratio and higher antibody and protein concentration. 4. The immuno-microfluorimetric technique is very useful for the objective determination of the results of fluorescence microscopy and for the comparison of conjugates of different qualities.

[Multilocular extramammary Paget's disease]

Paget cells were found histologically in a patient with erythemato-erosive lesions on the genitoperineale areas. These cells were also observed in the right axillary skin within a tiny depigmented spot and even in the left axillary skin which was macroscopically almost intact. There were no signs of metastatic or deep-seated adnexal adenocarcinoma. Treatment consisted of radical operation of the pathological lesions with skin grafting and removal of one testicle. After the operation the x-ray irradiation was performed.

Angiolipoma in brothers

Two brothers with angiolipoma are presented. The patients, 33- and 37-year-old men, have multiple subcutaneous nodules on the trunk and extremities. Skin biopsies have confirmed the diagnosis of angiolipoma.

Ultrastructural evidence for lack of tissue damage in a local immune complex reaction: a study of a mild passive Arthus reaction

An electron microscopic study of a mild reversed passive Arthus reaction (RPAR) was performed using a horeradish peroxidase (HRP)-anti-HRP system to demonstrate the biological usefulness of the process which exists to clear tissue of immune complexes. To disclose the antigen, HRP, the biopsy material was subjected to a peroxidase reaction. HRP was mainly detected within irregular electron-dense precipitates which were considered insoluable HRP-anti-HRP immune complexes. Neutrophils were found to phagocytose and digest the deposited immune complexes in a similar way as described previously. But there was no vascular and other tissue damage. This study provides morphological evidence that the process of clearing tissues of immune complexes need not be harmful to the host.

Vascular permeability-increasing action of hypoalbuminemic substance from Ehrlich ascites carcinoma cells

A hypoalbuminemic substance (F-3), which was obtained from Ehrlich ascites carcinoma cells, showed a marked vascular permeability-increasing action in mice. The highest increasing effect was produced 20 min after an intradermal injection of F-3. This action was inhibited by diisopropyl fluorophosphate, soybean trypsin inhibitor, and indomethacin but not by hydrocortisone or D-2-bromolysergic acid diethylamide. The inhibition of F-3 by diisopropyl fluorophosphate was observed in partial even after the excess diisopropyl fluorophosphate was removed from the diisopropyl fluorophosphate-treated F-3. The hypoalbuminemic and hypoproteinemic actions were not subjected to any inhibition by the diisopropyl fluorophosphate treatment. The decrease in albumin produced 3 hr after the injection of F-3 would be due to the leakage of albumin from blood vessels. F-3 might contain at least two components, one being a vascular permeability-increasing substance and the other a hypoalbuminemic one.