% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Sengupta:57086, author = {Sengupta, K. and Aranda-Espinoza, H. and Smith, L. and Janmey, P. and Hammer, D.}, title = {{S}preading of neutrophils: from activation to migration}, journal = {Biophysical journal}, volume = {91}, issn = {0006-3495}, address = {New York, NY}, publisher = {Rockefeller Univ. Press}, reportid = {PreJuSER-57086}, pages = {4638 - 4648}, year = {2006}, note = {Record converted from VDB: 12.11.2012}, abstract = {Neutrophils rely on rapid changes in morphology to ward off invaders. Time-resolved dynamics of spreading human neutrophils after activation by the chemoattractant fMLF (formyl methionyl leucyl phenylalanine) was observed by RICM (reflection interference contrast microscopy). An image-processing algorithm was developed to identify the changes in the overall cell shape and the zones of close contact with the substrate. We show that in the case of neutrophils, cell spreading immediately after exposure of fMLF is anisotropic and directional. The dependence of spreading area, A, of the cell as a function of time, t, shows several distinct regimes, each of which can be fitted as power laws (A ~ t(b)). The different spreading regimes correspond to distinct values of the exponent b and are related to the adhesion state of the cell. Treatment with cytochalasin-B eliminated the anisotropy in the spreading.}, keywords = {Actins: metabolism / Bicyclo Compounds, Heterocyclic: pharmacology / Cell Adhesion / Cell Polarity / Cell Shape / Chemotaxis, Leukocyte / Cytochalasin B: pharmacology / Humans / Models, Biological / N-Formylmethionine Leucyl-Phenylalanine: pharmacology / Neutrophil Activation / Neutrophils: physiology / Thiazolidines: pharmacology / Actins (NLM Chemicals) / Bicyclo Compounds, Heterocyclic (NLM Chemicals) / Thiazolidines (NLM Chemicals) / Cytochalasin B (NLM Chemicals) / N-Formylmethionine Leucyl-Phenylalanine (NLM Chemicals) / latrunculin A (NLM Chemicals) / J (WoSType)}, cin = {ISG-4}, ddc = {570}, cid = {I:(DE-Juel1)VDB421}, pnm = {Kondensierte Materie}, pid = {G:(DE-Juel1)FUEK414}, shelfmark = {Biophysics}, typ = {PUB:(DE-HGF)16}, pubmed = {pmid:17012330}, pmc = {pmc:PMC1779913}, UT = {WOS:000242339600032}, doi = {10.1529/biophysj.105.080382}, url = {https://juser.fz-juelich.de/record/57086}, }