منابع مشابه
Lvi. Opsonins and Diets Deficient
ALTHOUGH it is well known that animals fed on diets deficient in vitamins frequently die from intercurrent bacterial infections, the reason for this apparent failure in the protective mechanism of the body is at present unknown. Hektoen [1914] found that the serum reactions were quite normal in animals fed for considerable periods on artificial diets, while later, Zilva [1919] could not determi...
متن کاملSerum Heat-Labile Opsonins
a study of the serum heat-labile opsonic capacity (HLOC) in such patients was undertaken. With leukocytes from normal donors, the sera of 12 of 30 patients with active SLE demonstrated decreased HLOC for E. coli 075. The phagocytic activity was partially restored by normal serum, suggesting that decreased HLOC was responsible for the defective phagocytosis. While 8 of 10 patients with active SL...
متن کاملComparison of the effect of different opsonins on the phagocytosis of fluorescein-labeled staphylococcal bacteria by chicken heterophils.
Heterophil phagocytosis of fluorescein-labeled staphylococcal bacteria was analyzed by flow cytometry. Opsonization with two types of normal pooled sera and staphylococcal antisera significantly increased bacterial phagocytosis compared to samples without an opsonin. The staphylococcal antisera did not significantly increase bacterial phagocytosis compared to the normal pooled sera. Opsonizatio...
متن کاملHeat Labile Opsonins to Pneumococcus
Heat labile opsonins (HLO) in normal rat serum to both encapsulated and unencapsulated pneumococci (a) have the same heat lability as complement (C); (b) are active at 37 degrees C but not at 0 degrees C; (c) are inactivated proportionately to hemolytic C by the addition of immune aggregates to the serum; (d) are adsorbed from serum nonspecifically by bacteria at 37 degrees C but not at 0 degre...
متن کاملStudies on Opsonins in Q Fever
A method was developed for the quantitative determination of opsonins for C. burnetii. An opsonin unit for C. burnetii was defined as that quantity of opsonin which, under standardized conditions, causes phagocytosis of elementary bodies of C. burnetii by 94 to 100 per cent of polymorphonuclear neutrophils. The opsonin titer represents the number of opsonin units in 0.1 ml. of serum or heparini...
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ژورنال
عنوان ژورنال: JAMA: The Journal of the American Medical Association
سال: 1906
ISSN: 0098-7484
DOI: 10.1001/jama.1906.62510460001001