immunune

INTRODUCTION: To investigate the biodistribution and retention properties of the new super paramagnetic iron oxide (new SPIO: mean hydrodynamic diameter, 100 nm) nanoparticles, which have concentrated polymer brushes in the outer shell and are difficult for phagocytes to absorb, and to compare the new SPIO with clinically approved SPIO (Resovist: mean hydrodynamic diameter, 57 nm). MATERIALS AND METHODS: 16 male C57BL/6N mice were divided in two groups according to the administered SPIO (n = 8 for each group; intravenous injection does, 0...

Targeting bacterial virulence factors such as proteases for immunization may hold the key to limiting or preventing loss of attachment and alveolar bone in periodontal disease. This study examined the clinical, microbiological, and immununological responses following active immunization with a purified Porphyromonas gingivalis cysteine protease (porphypain-2) in the nonhuman primate (Nhp) Macaca fascicularis. One group of Nhp was immunized with porphypain-2 antigen while control Nhp received placebo injections...

A canine model for the comparative study of lower respiratory and systemic immunologic reactions is described. The techniques of bronchopulmonary lavage and percutaneous splenic aspiration were employed to obtain serial samples of pulmonary and systemic lymphocytes. The morphologic features and the yield of cells obtained by these procedures were characterized. The presence of lymphocytes and plasma cells among the cell populations obtained by pulmonary lavage was confirmed by electron microscopy. The effect of serial bronchopulmonary lavage per se on the yield, composition, and functional properties of bronchoalveolar lymphocytes and macrophages was found to be minor...

The occurrence of renal manifestations of Hodgkin's disease may result from multiple physio-pathological processes: mechanical, by obstruction of the vessels or excretory systems of the kidneys; specific, by lymphogranulomatous infiltration of the parenchyma; immunological, as immunune complex glomerulonephritis or, more frequently, as amyloid disease; infective or metabolic as a complication of long term corticosteroid or immunodepressive therapy. These various causes of renal problems during Hodgkin's disease lead to the observation of three principal clinical pictures: acute renal failure, chronic renal failure and permanent proteinuria with or without nephrotic syndrome...

The secretory intestinal immune response to live and heat-inactivated E. coli 02 has been studied in young germ-free chicks. A response to live organisms was evident from an infiltration of the intestinal mucosa with IgA and IgM immunoglobulin-producing cells (IPC). Antibody associated with both immunoglobulin classes which was specific for E. coli 02 was demonstrated in saline extracts of contents from the small intestine. Repeated oral immunization with heat-killed E. coli 02 failed to stimulate serum or intestinal antibody...