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- W2000974324 abstract "One approach to study the inflammatory potential of neutrophils involves in vitro methods, using either adherent or suspended cells. In order to do structure-function studies, traditional methods require that experiments be done in parallel: one experiment for structure and another for function. In this report new morphological methods for coordinated structure-function studies on the same cells are described. Isolation and biochemical analysis of sheep and human adherent neutrophils were done as described in the companion paper (Cerasoli et al., 1988). Then, at designated time points, the adherent cells were fixed and processed in the microtiter wells for high-resolution light microscopy and transmission electron microscopy. The principal obstacle to the morphological studies was chemical etching of the microtiter wells by the processing solutions and embedding media. Insertion of No. 3 BEEMTM capsule ‘sleeves’ (the cap and conical tip were removed) into the wells before processing eliminated the obstacle and provided standard-sized, polymerized blocks for microtomes. Adherent neutrophils activated in vitro with 10−7 M phorbol myristate acetate developed prominent cytoplasmic vacuoles. Furthermore, the activated cells assumed irregular shapes and cytoplasmic processes. These changes in adherent cell morphology in vitro are similar to those seen in neutrophils which have been activated and fixed in vivo. Thus, the in vitro approach we devised retains the morphologic characteristics of cells in vivo and provides an efficient method to do integrated structure-function studies. Using these techniques, we have studied alveolar neutrophils obtained from a patient with acute respiratory failure. These cells contained conspicuous cytoplasmic vacuoles, few granules, and their border was ruffled. The same morphologic changes observed after activation of peripheral blood neutrophils with phorbol myristate acetate in vitro were seen in the alveolar neutrophils obtained from this patient. Therefore, these studies reveal that similar morphologic changes are seen in neutrophils stimulated in vitro as well as cells which have been activated pathophysiologically in vivo." @default.
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- W2000974324 date "1988-01-01" @default.
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- W2000974324 title "Morphological analysis of the activation of adherent neutrophils in vitro" @default.
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- W2000974324 doi "https://doi.org/10.1016/0040-8166(88)90054-7" @default.
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