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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 76 (1988), S. 427-431 
    ISSN: 1432-0533
    Schlagwort(e): Blood-retinal barrier ; Negative surface charge ; Endothelial damage ; Protamine sulfate ; Hemoglobin
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The effect of the polycations, protamine sulfate and poly-l-lysine, on the blood-retinal barrier of rat retinal vessels were studied by retrograde perfusion through the aorta or by intracarotid perfusion of the polycation followed by the protein tracer, hemoglobin. Protamine sulfate induced swelling of cytoplasmic organelles and diffuse staining of many endothelial cells by tracer molecules which subsequently entered the subendothelial and perivascular areas. Polylysine caused some diffuse staining but no leakage of tracer through the endothelial cell. Occasionally, tracer was found in the interendothelial junction after protamine perfusion. The results indicate that surface charge is important for maintaining membrane integrity of the endothelial cells and that breakdown of the blood-retinal barrier may be due to the cytotoxic effect of protamine on the endothelial cell.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Clinical rheumatology 14 (1995), S. 441-444 
    ISSN: 1434-9949
    Schlagwort(e): Bone Scan ; Radiography ; Reiter's Disease ; Arthritis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Tc-99m MDP bone scans were used to evaluate the articular inflammation in 38 patients with Reiter's disease and compared with clinical examination and radiologic findings. Our data showed that Reiter's disease predominantly involves the lower limbs, especially the heels, which may be a characteristic feature of Reiter's disease. Bone scans revealed a high diagnostic sensitivity in the detection of clinical arthritis in all peripheral joints, especially in the small joints of the four limbs. The diagnostic sensitivity of radiography was generally lower than bone scintigraphy. In the presence of positive radionuclide findings, clinical arthritis was found in most joints. The scintigram, however, detects a greater number of abnormalities than does clinical assessment in the sternoclavicular joints, shoulders, metacarpophalangeal joints, and tarsals. Because of its high sensitivity, bone scintigraphy is capable of detecting subclinical arthritis, and might provide more objective evidence of early inflammatory joint disease and additional information regarding the pattern of joint involvement. In view of the advantages of low patient radiation exposure, high sensitivity, and the ability to survey the whole body, we consider bone scintigraphy as useful and better than radiography in the detection of early articular inflammation and in establishing the extent and pattern of arthritis in Reiter's disease.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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