Showing papers in "Cell Biology International Reports in 1990"

TL;DR: Four xanthene dyes appear to potentiate the antiviral activity of the poly r(A-U) without superinduction of interferon, and are tested as combinations for inactivation of the VSV.

TL;DR: Both adhesion and the orientation of germ tube outgrowth are clearly dependent on the correct alignment of the zoospores at the root surface.

TL;DR: Neutral phospholipids play an important role in Ca2+ binding to biomembranes, in particular if the membrane carries a net negative surface charge due to charged lipids or proteins, and could play a regulatory role in membrane function.

TL;DR: A series of constructs have been made by fusing different lengths of human desmin 5'-flanking fragments to the bacterial chloramphenicol acetyl transferase (CAT) gene, these constructs were introduced either into mouse myogenic cells or into nonmyogenic cells.

TL;DR: The cytotoxic and cytolytic effects of equinatoxin II from the sea anemone Actinia equina L. were studied on exponentially growing and synchronized V-79-379 A cell line in culture and no significant difference in sensitivity between synchronized and exponentially growing cells could be detected after EqT II treatment.

TL;DR: The results extend the limits of the head and tail domains of vimentin that play a role in filament formation and stability to include proteins capable of polymerizing into essentially normal 10 nm filaments.

TL;DR: Based on biochemical characterization, p140 is a novel nucleolar protein that shuttles between the nucleolus and the cytoplasm and functions as a nuclear import carrier.

TL;DR: The results indicate that the proportions of polysomes in the three different fractions can be modulated by physiological stimuli, such as media replenishment and insulin.

TL;DR: It is observed that the phagocytic activity of earthworm coelomocytes is increased after in vivo stimulation by a protein antigen (arsanylated human serum albumin) and after pre-incubation of particles in cell-free coelomic fluid.

TL;DR: It is concluded that neurite outgrowth can be initiated in NB2a/d1 cells by calcium influx, and may involve alterations in actin and microtubule dynamics.

TL;DR: An immunocytochemical study of peptidylarginine deiminase in various rat tissues using an antiserum to the enzyme purified from rat skeletal muscle found staining in skeletal muscle fibers, glia cells of the central nervous system, serous cells of submandibular gland, demilunar cells (serous cells) of sublingual gland, uterine endometrium and myometrium.

TL;DR: To the authors' knowledge, this is the first report that isolated myometrial cells form gap junctions in culture and the cells expressed mRNA recognized by a connexin43 gap junction cDNA probe.

TL;DR: HA reduced cell proliferation to about 75% of controls, while incorporation of radiolabelled sulphate and proline was higher in HA-treated cultures of both chondroblast and fibroblasts.

TL;DR: The fixation regime and embedding procedure outlined has enabled a sub-cellular localization of enzymatic activities which is superior to that obtainable with conventional procedures.

TL;DR: Electron microscopy seems to indicate that the plasma membrane is the main target for lithium cytotoxicity, whilst lithium uptake studies suggest that cytot toxicity might be related to the accumulation of lithium within the cells.

TL;DR: Intracellular levels of cAMP and specific activities of adenylate cyclase, cAMP phosphodiesterase and cAMP-dependent protein kinase were measured during filamentation in the dimorphic fungus Candida albicans and some properties of the enzymatic activities from cell-free extracts are described.

TL;DR: A comparison of dibucaine binding to monolayers and bilayers showed that a surface pressure of 32 mN/m best represents the packing density in a lipid bilayer.

TL;DR: The nuclear recovery of phosphatidylinositol 4,5-bisphosphate was largely increased after 2 hrs of induction, suggesting that inositol lipid metabolism is involved in the early differentiation events occurring at the nuclear level.

TL;DR: In situ hybridization with 3H 28 S ribosomal RNA at the ultrastructural level shows labelling exclusively over the nucleolus and specifically over the dense nucleolar component (DNC).

TL;DR: It is suggested that neuropeptide Y is involved in the physiology of the penis and the clitoris, affecting vascular and nonvascular smooth muscle activity.

TL;DR: The results are consistent with the hypothesis that nuclear lipids and namely the products of polyphosphoinositide hydrolysis, such as DAG, are involved in the regulation of the processes leading to cell differentiation.

TL;DR: Model excitation spectra based on a two compartment model mimicked the intracellular BCECF spectrum, therefore, supporting the possibility that organelles in sea urchin eggs accumulate large amounts ofBCECF in a relatively pH-insensitive form.

TL;DR: The reactive oxygen radicals produced from human polymorphonuclear leukocytes stimulated with PMA, hydroxyl radicals generated by a Fenton reaction, and superoxide anion radicals produced by irradiating solutions of riboflavin in the presence of EDTA have been taken as the models for production of oxygen radicals.