Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"blebs"”.
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Bleb-driven chemotaxis in Dictyostelium discoideum
… membrane, or by fluid pressure, which produces blebs. Most cells are believed to move using actin-driven projections, but in more physiological conditions, blebbing motility is also apparent. It has been shown that certain cells even can switch between these two modes of motility, although it is …
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New Types of Morpho-Physiological Changes in Cells Exposed to Nanosecond Pulsed Electric Field
… underlying the formation of pseudopod-like blebs (PLBs). These aims are fulfilled through the analysis of microscopy data obtained from the nsPEF-exposed cells using fluorescent labeling and pharmacologic inhibition. The adapted labeling techniques take advantage of the nsPEF-induced cell …
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THE ROLE OF THE MACROPHAGE IN ASBESTOS INDUCED AUTOANTIBODY PRODUCTION
… in the translocation of SSA/Ro52 to cell surface blebs of apoptotic cells. These apoptotic cell surface blebs are recognized by autoantibodies from mice exposed to amphibole asbestos, suggesting that these cell surface structures may be antigenic when presented in a pro-inflammatory context. These …
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THE ROLE OF THE MACROPHAGE IN ASBESTOS INDUCED AUTOANTIBODY PRODUCTION
… in the translocation of SSA/Ro52 to cell surface blebs of apoptotic cells. These apoptotic cell surface blebs are recognized by autoantibodies from mice exposed to amphibole asbestos, suggesting that these cell surface structures may be antigenic when presented in a pro-inflammatory context. These …
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Gpi-Anchored Proteins In Ciliated Protozoa: From Ca++ Signaling To Mitochondrial Extrusion
… Ca++ and the formation of membrane aggregates (blebs) at the cell surface that migrate to the tips of cilia where they are shed. Remarkably, cross-linking of i-antigens also leads to mitochondrial extrusion both in Tetrahymena and Ichthyophthirius. Release of mitochondria from intact cells was …
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Molecular Analysis of the Unconventional Export Machinery of HASPB, a component of the surface coat of Leishmania parasites
… of highly-dynamic non-apoptotic plasma membrane blebs (Tournaviti et al., 2006 submitted). Based on these observations cell culture supernatants from HASPB expressing CHO cells were analyzed. As revealed by flotation analysis the detected sedimentable material contained a vesicle-associated HASPB …
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The ultrastructure of a marine luminous bacterium
… and typical of Gram-negative bacteria often had blebs on the surface. The cytoplasmic membrane, typical of a 7.5 nm unit biological membrane in appearance in normal cells seemed to be composed of a number of laminations in some L-form cells. These laminations consisting of alternate dark and …
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Composition and fabric of the Kupferschiefer, Sangerhausen Basin, Germany and a comparison to the Kupferschiefer in the Lubin Mining District, Poland
… in the form of disseminated spherules, blebs, aggregates, framboids, and bedding-parallel and -perpendicular veins, is observed in both locations on macro- and microscopic scales. The most abundant sulfide in mineralized samples from both locations is chalcocite, followed by …
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Biologia reprodutiva de Artibeus lituratus (Olfers, 1818) (Chiroptera: Phyllostomidae)
… seminal vesicle and a single prostate. Secretory blebs resulting from apocrine secretion were noticed in the lumina of tubules of seminal vesicle. Reproductive pattern seems to be seasonal poliestry since lactant females were collected with early embryos in uterus, and late pregnat and lactant …
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Ore mineralogy and paragenesis of a portion of the Great Gossan Lead district, Virginia
… commonly containing oriented lamellae and blebs of chalcopyrite and pyrrhotite. Chalcopyrite and galena occur as disseminated grains and as veinlets squeezed into fractured gangue minerals. A strongly developed metamorphic fabric, the absence of mineral zoning, and the presence of a zone of …
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A study of the neurotoxicity of MPTP and analogs in human neuroblastoma SH-SY5Y cells
… alterations of morphology included formation of blebs, attenuated neutrites, abnormal mitochondria with electron-density of matrix and disorganization of cristae, and abnormal aggregation of filamentous material of the cytoskeleton. MPTP was neurotoxic to the dopaminergic system, inhibiting …
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Directed Migration Achieved in Mammalian Cells via Ca2+ Signal Rewiring in Synthetic Protein Chimeras
… in turn activates CaRQ-mediated non-apoptotic blebs allowing migration towards the TNFα source. Next, the addition of VSVG, upon low pH induction, causes membrane fusion of the engineered and TNFα source cells. Finally, post-ganciclovir treatment, cells undergo death via the thymidine kinase …
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Thermal histories of CB meteorites: Constraints from compositions and microstructures of sulfides
… daubreelite, sulfide inclusions with Fe,Ni metal blebs, and arcuate sulfides. Some particles also contain Fe-Ni-S eutectic textures composed of a mixture of MSS1 and Fe,Ni metal. The four CB meteorites analyzed (CBa Gujba, CBa Weatherford, CBb HH 237, and CBb QUE 94411) all contain these sulfides …
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Hydrodynamics and Diffusion of Membrane Proteins to Engineer Chemical Reactions in Synthetic Biomembrane Platforms
… in supported bilayers formed from mammalian cell blebs is described. The orientation and diffusion of proteins within these bilayers are characterized. Next, computational studies of diffusion of transmembrane proteins are described. The long-time diffusivity of a single transmembrane protein …
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An in-vitro investigation to determine the neuroinflammatory response of CNS cells to oral bacteria and their virulence factors.
… rapidly by forming cell surface membrane “blebs” at multiple sites. Only prolonged incubation with the virulence factors displayed gingipains localised to perinuclear and lysosomal regions of SGVp12 cells and the primary mixed glial CNS cells. The fluorescein-phalloidin indicated …
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High resolution palaeoceanography and palaeoclimatology from mid and high latitude Late Cretaceous laminated sediments
… grazed diatoms. Seasonally occurring detrital ‘blebs’ and rare detrital laminae are also observed, which may represent ice rafted debris, consistent with Campanian model simulations. Diatom taxa adapted to exploit stratified conditions, sedimented over the summer or in a ‘fall dump’, are …
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Geochemical studies of earth materials
… Al, V, Ni, Mg) spinel, V₂O₅ laths, Al-Si glass blebs and Ni sulfides. Reduced samples contain: crystalline Ca-silicate matrix, subhedral to euhedral (V, Fe, Mg, Al) spinel, subhedral VO₂, Fe and Fe-Ni sulfides, Fe-Ni alloys, and complex Ca-oxide matrix. The different spinel assemblages, the …
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Brucella abortus Strain RB51 Outer Membrane Vesicles as a Vaccine Against Brucellosis in a Murine Model
Brucella abortus is a zoonotic agent that primarily infects cattle and causes brucellosis. B. abortus strain RB51 is a live, attenuated vaccine licensed for cattle. However, there is no available vaccine to prevent human brucellosis. Outer membrane vesicles have been tested as potential vaccines to …
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A petrographical and mineralogical investigation of the rocks of the Bushveld Igneous Complex in the Tauteshoogte-Roossenekal area of the Eastern Transvaal
… over large areas and which may contain a few blebs of augite exsolved from the original pigeonite. A few pigeonite grains were effectively trapped in other minerals, mostly augite, and consequently escaped reaction with the liquid. These inverted to hypersthene at the appropriate temperature …
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Gold mineralization in the Um El Tuyor area, South Eastern Desert, Egypt
… sulphides and quartz, and/or occurs as dispersed blebs and globules in domains of pervasive alteration, particularly where sericite and carbonate are intergrown. In the mine area, a metal zonation extends from an inner Fe-As-Zn-Au ±Pb±Ag±Te bearing veins through an intermediate Fe-As-Cu rich …