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The type 1 σ receptor (σR1) has been shown to participate in a variety of functions in the central nervous system. To identify the specific regions of the brain that are involved in σR1 function, we analyzed the expression pattern of the receptor mRNA in the mouse brain by in situ...
The platelet integrin αIIbβ3 exhibits bidirectional signaling, in that intracellular messengers enable adhesive macromolecules to bind to its ectodomain, while ligation promotes the association of cytoskeletal proteins with its cytoplasmic domains. In order to understand the linkage between...
The focal adhesion kinase, FAK, is an important component of an integrin-dependent signaling pathway, which functions to transmit signals from the extracellular matrix into the cytoplasm. FAK is an essential gene product, since the fak −/− mouse exhibits embryonic lethality. A number of...
Thyrotropin (TSH) and pharmacological agents that elevate intracellular cAMP concentrations potentiate the mitogenic response of FRTL-5 thyroid cells to insulin-like growth factor-I (IGF-I). This study was undertaken to determine the role of cAMP phosphodiesterases (PDEs) in this TSH-dependent...
A novel hypocrellin congener, 2-butylamino-2-demethoxy-hypocrellin B (2-BA-2-DMHB) was found to be an effective photosensitizer. Compared with its parent compound hypocrellin B (HB), its absorption bands extended toward longer wavelength and the extinction coefficients raised to some degree ( λ...
The metabolism of S -adenosylmethionine (AdoMet), a key molecule in regulating T cell differentiation and proliferation, is different in normal and leukemic T cells. To delineate the basis for these differences we studied the transcriptional regulation of human methionine adenosyltransferase II...
Human peripheral blood mononuclear cells (PBMC) upon transendothelial migration interact with subendothelial matrix components and differentiate into macrophages. In order to study whether the shape of the cells as dictated by the extracellular matrix can influence monocyte–macrophage...
Paneth cells are zinc-containing cells localized in small intestinal crypts, but their function has not been fully elucidated. Previously, we showed that an intravenous injection of diphenylthiocarbazone (dithizone), a zinc chelator, induced selective killing of Paneth cells, and purified a...
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