منابع مشابه
Drying Shrinkage Mechanisms in Portland Cement Paste
The shrinkage mechanisms of portland cement paste were investigated from shrinkage, weight loss, and pore structure measurements using nitrogen sorption and mercury intrusion porosimetry (MIP). Thin samples (2.3 mm) of well-hydrated (165 d) pastes of 0.4 and 0.6 water-to-cement (W/C) ratios were dried directly from saturated surface dry state to 75%, SO%, 11%, and 0% relative humidity (rh). Fro...
متن کاملOsmotic cell shrinkage activates ezrin/radixin/moesin (ERM) proteins: activation mechanisms and physiological implications.
Hyperosmotic shrinkage induces multiple cellular responses, including activation of volume-regulatory ion transport, cytoskeletal reorganization, and cell death. Here we investigated the possible roles of ezrin/radixin/moesin (ERM) proteins in these events. Osmotic shrinkage of Ehrlich Lettre ascites cells elicited the formation of long microvillus-like protrusions, rapid translocation of endog...
متن کاملCertain protein transducing agents convert translocated proteins into cell killers.
The majority of proteins are unable to translocate into the cell interior. Hence for peptide- and protein-based therapeutics a direct intracytoplasmic delivery with the aid of transducing agents is an attractive approach. We wanted to deliver to the cell interior a putatively cytotoxic protein VPg. Protein transduction was achieved in vitro with three different commercial products. However, in ...
متن کاملAstrocytic Mechanisms Explaining Neural-Activity-Induced Shrinkage of Extraneuronal Space
Neuronal stimulation causes approximately 30% shrinkage of the extracellular space (ECS) between neurons and surrounding astrocytes in grey and white matter under experimental conditions. Despite its possible implications for a proper understanding of basic aspects of potassium clearance and astrocyte function, the phenomenon remains unexplained. Here we present a dynamic model that accounts fo...
متن کاملTransducing the Hedgehog Signal
ates Ptc from Smo (Figure 1B) is also generally enter-Daniel Kalderon* tained (Chen and Struhl, 1996) because it is countered Department of Biological Sciences only by a single observation of Ptc-mediated binding of Columbia University Hh to Smo in tissue culture cells that expressed high New York, New York 10027 levels of both vertebrate Ptc and Smo (Stone et al., 1996). Some new data support ...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1999
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-199904020-00224