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  • Articles  (12)
  • Cells, Cultured  (12)
  • American Association for the Advancement of Science (AAAS)  (12)
  • Blackwell Publishing Ltd
  • 1975-1979  (12)
  • 1
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    Lens epithelial cell elongation in the absence of microtubules: evidence for a new effect of colchicine (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-11-16
    Description: Embryonic chick lens epithelial cells cultured in serum-supplemented medium elongated in the absence of microtubules after treatment with the antimicrotubule drug nocodazole. Colchicine, at concentrations lower than those that dissociate microtubules, blocks cell elongation and the associated increase in cell volume. These results indicate that an increase in cell volume, not microtubules, is responsible for lens cell elongation and suggest a previously undescribed effect of colchicine on cell volume regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beebe, D C -- Feagans, D E -- Blanchette-Mackie, E J -- Nau, M E -- New York, N.Y. -- Science. 1979 Nov 16;206(4420):836-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzimidazoles/pharmacology ; Carbamates/pharmacology ; Cells, Cultured ; Chick Embryo ; Colchicine/*pharmacology ; Epithelium/ultrastructure ; Lens, Crystalline/*cytology ; Microtubules/*drug effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Collagenase immunolocalization in cultures of rheumatoid synovial cells (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-05-19
    Description: Cultures of rheumatoid synovial cells that have been enzymatically dissociated and are adherent to a culture vessel are morphologically heterogeneous. When these cells are cultured on a collagenous substrate for 2 to 6 days at 37 degrees C in serum-free medium, they produce collagenase. A monospecific antibody to human collagenase has localized the enzyme extracellularly around cytoplasmic extensions of dendritic cells and intracellularly within a few macrophage-like and fibroblast-like cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woolley, D E -- Harris, E D Jr -- Mainardi, C L -- Brinckerhoff, C E -- New York, N.Y. -- Science. 1978 May 19;200(4343):773-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/205952" target="_blank"〉PubMed〈/a〉
    Keywords: Arthritis, Rheumatoid/*enzymology ; Cells, Cultured ; Fibroblasts/enzymology ; Humans ; Microbial Collagenase/antagonists & inhibitors/*metabolism ; Synovial Fluid/cytology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Loss of division potential in vitro: aging or differentiation? (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-12-15
    Description: We have examined the hypothesis that diploid cells grown in vitro age, and propose that only proliferative potential and not life-span is telescoped. We suggest that explanted or transplanted diploid cells are driven to divide by the process of subculturing in vitro or in vivo and, in response to this pressure, also complete their differentiation and become refractory to further mitotic stimulation. We conclude that differentiation rather than "mortality" distinguishes diploid from transformed cells and that the former may not age in vitro, but are lost because culture methods are selective for cycling cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, E -- Marek, L F -- Levinstone, D S -- Merrill, C -- Sher, S -- Young, I T -- Eden, M -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1158-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725592" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Cycle ; *Cell Differentiation ; *Cell Division ; *Cell Survival ; Cells, Cultured ; Fibroblasts
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Nature and nurture in development of the autonomic neuron (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-31
    Description: Arguments are presented for the hypothesis that during an early stage of development the cells which become principal neurons of the autonomic nervous system possess information regarding the positions they will occupy within the body. A second stage of development, during which a decision is made regarding which neurotransmitter to employ, is delayed until each neuron has assumed its permanent position in the body and has sampled, presumably via its growing axons, the peripheral field which it will innervate. The development of cholinergic mechanisms takes precedence; adrenergic neurons may develop only when cholinergic sites have been occupied. An extended period during which the differentiation of transmitter mechanisms may be modulated permits the neuron to adequately sample the periphery prior to commitment to a specific transmitter economy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bunge, R -- Johnson, M -- Ross, C D -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1409-16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24273" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic Fibers/cytology ; Animals ; Autonomic Nervous System/*embryology/growth & development ; Cell Differentiation ; Cells, Cultured ; Chimera ; Cholinergic Fibers/cytology ; Embryonic Induction ; Ganglia, Autonomic/cytology ; Heart/innervation ; Intestines/innervation ; Nerve Endings/ultrastructure ; Neurotransmitter Agents/metabolism ; Phylogeny ; Synaptic Vesicles/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Substance P: evidence for diverse roles in neuronal function from cultured mouse spinal neurons (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-09-28
    Description: Mouse spinal neurons grown in tissue culture were used to examine the membrane mechanisms of action of the peptide substance P. Two functionally distinct actions were observed, one being a rapidly desensitizing excitation, and the other being a dose-dependent, reversible depression of excitatory responses to the putative amino acid neurotransmitter glutamate. These effects on excitability suggest that substance P may play more than one role in intercellular communication in the nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vincent, J D -- Barker, J L -- New York, N.Y. -- Science. 1979 Sep 28;205(4413):1409-12.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/224464" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Communication ; Cells, Cultured ; Electric Conductivity ; Excitatory Amino Acid Antagonists ; Glutamates/pharmacology ; Membrane Potentials ; Mice ; Neural Inhibition ; Spinal Cord/cytology/*physiology ; Substance P/*physiology ; Synaptic Transmission
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Deficiencies of glucosamine-6-sulfate or galactosamine-6-sulfate sulfatases are responsible for different mucopolysaccharidoses (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-06
    Description: [1-3H]Galactitol-6-sulfate, N- [1-3H]acetylgalactosaminitol-6-sulfate, N-[1-3H]acetylglucosaminitol-6-sulfate, N-acetylglucosamine-6-sulfate, and 6-sulfated tetrasaccharides from chondroitin-6-sulfate have been used for the measurement of 6-sulfatase activity of extracts of normal skin fibroblasts and of fibroblasts cultured from patients with genetic mucopolysaccharidoses. With these substrates, extracts of fibroblasts derived from Morquio patients lack or have greatly reduced activities for galactitol-6-sulfate, N-acetylgalactosaminitol-6-sulfate, and 6-sulfated tetrasaccharides but have normal activity for N-acetylglucosamine-6-sulfate and its alditol; those derived from a patient with a newly discovered mucopolysaccharidosis have greatly reduced activity for N-acetylglucosamine-6-sulfate and its alditol but normal activity for galactitol-6-sulfate, N-acetylgalactosaminitol-6-sulfate, and the 6-sulfated tetrasaccharides. These findings demonstrate the existence of two different hexosamine-6-sulfate sulfatases, specific for the glucose or galactose configuration of their substrates. Their respective deficiencies, causing inability to degrade keratan sulfate and heparan sulfate in one case and keratan sulfate and chondroitin-6-sulfate in the other, are responsible for different clinical phenotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Di Ferrante, N -- Ginsberg, L C -- Donnelly, P V -- Di Ferrante, D T -- Caskey, C T -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):79-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratories of Connective Tissue Research, Department of Biochemistry, Baylor College of Medicine, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569489" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylgalactosamine/analogs & derivatives/metabolism ; Acetylglucosamine/analogs & derivatives/metabolism ; Cells, Cultured ; Child, Preschool ; Chondroitin Sulfates/metabolism ; Chondroitinsulfatases/*deficiency/metabolism ; Fibroblasts/enzymology ; Galactitol/metabolism ; Heparitin Sulfate/metabolism ; Humans ; Hydrogen-Ion Concentration ; Keratan Sulfate/metabolism ; Male ; Mucopolysaccharidoses/*enzymology ; Mucopolysaccharidosis III/enzymology ; Mucopolysaccharidosis IV/*enzymology ; Skin/cytology/enzymology ; Substrate Specificity ; Sulfatases/*deficiency/metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Entry of insulin into human cultured lymphocytes: electron microscope autoradiographic analysis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-17
    Description: Electron microscope autoradiographs were prepared of IM-9 human cultured lymphocytes incubated with iodine-125-labeled insulin. With the use of [125I]insulin and Ilford L-4 emulsion, the technique had a resolution half-distance of approximately 0.085 micrometer. Autoradiographs revealed a time-dependent entry of insulin into the cell interior that was maximal after 30 minutes of incubation. At this time point nearly 40 percent of the [125I]insulin was in the interior of the cell at a distance 1 micrometer or greater from the plasma membrane. Grain distribution and volume density analyses revealed that the intracellular insulin was concentrated in the endoplasmic reticulum and nuclear membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldfine, I D -- Jones, A L -- Hradek, G T -- Wong, K Y -- Mooney, J S -- New York, N.Y. -- Science. 1978 Nov 17;202(4369):760-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715440" target="_blank"〉PubMed〈/a〉
    Keywords: Autoradiography ; Biological Transport ; Cell Nucleus/metabolism ; Cells, Cultured ; Endoplasmic Reticulum/metabolism ; Humans ; Insulin/*metabolism ; Kinetics ; Lymphocytes/*metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Chronologic and physiologic age affect replicative life-span of fibroblasts from diabetic, prediabetic, and normal donors (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-02-17
    Description: Cultured skin fibroblasts from subjects with clinically apparent diabetes mellitus and from subjects genetically predisposed to diabetes have a replicative lifespan that is inversely related to donor age. Fibroblasts from carefully defined normal subjects not predisposed to diabetes fail to show this correlation. The data support the idea that physiologic status of the tissue donor is a more precise determinant of fibroblast replicative lifespan than chronologic age.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldstein, S -- Moerman, E J -- Soeldner, J S -- Gleason, R E -- Barnett, D M -- New York, N.Y. -- Science. 1978 Feb 17;199(4330):781-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622567" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; *Aging ; Cell Division ; Cell Survival ; Cells, Cultured ; Diabetes Mellitus/pathology/*physiopathology ; Fibroblasts/*cytology/pathology ; Humans ; Middle Aged ; Prediabetic State/pathology/*physiopathology ; Regression Analysis ; Skin/cytology/pathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Preparation of sarcolemmal membrane from myocardial tissue culture monolayer by high-velocity gas dissection (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-23
    Description: A high-velocity stream of nitrogen is used to simultaneously disrupt myocardial cells in monolayer culture and fractionate their sarcolemmal membranes. The membranes show a high degree of ultrastructural and enzymatic purity, with less than 1 percent intracellular residuum. They are produced in less than 1 second and remain as tightly adherent sheets on the surface on which the cells were grown. The cells are exposed to no agent other than nitrogen gas during the preparative procedure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Langer, G A -- Frank, J S -- Philipson, K D -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1388-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/566465" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Fractionation/methods ; Cells, Cultured ; Ferritins ; Membrane Proteins/analysis ; Microscopy, Electron ; Microscopy, Electron, Scanning ; Myocardium/ultrastructure ; Nitrogen ; Rats ; *Sarcolemma/analysis/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    "Sontaneous" neoplastic transformation in vitro: a form of foreign body (smooth surface) tumorigenesis (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-04-13
    Description: Explants of subcutaneous connective tissue from adult BALB/c mice into plastic petri dishes were serially subcultured and tested for tumorigenicity in two ways: by the subcutaneous implantation of cells attached to plastic plates (1 by 5 by 10 millimeters), and by the subcutaneous injection of cells suspended in saline. Cells grown in vitro for 18 or more days before being implanted attached to a plastic plate (2.4 x 10(4) to 3.4 x 10(5) cells per plate) formed tumors after 24 to 79 weeks. The latent period before tumor appearance correlated inversely with the time spent by the cells in tissue culture. Cells inoculated in saline suspension (10 to 100 times the above number per plate) did not form tumors until after 84 days in vitro; plates alone did not induce tumor formation within more than 1 1/2 years of implantation. The tumors arising from the plate-attached cells were transplantable without plates and histologically appeared to be undifferentiated sarcomas. It is well established that smooth-surfaced foreign bodies, regardless of their chemical composition, will produce sarcomas when transplanted subcutaneously in rodents. We interpret our data, particularly the decrease in tumor latent period with time spent in tissue culture, as indicating that a smooth surface was acting as a carcinogen first in vitro (the surface of the tissue culture dish) and then in vivo (the surface of the plastic plate).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boone, C W -- Takeichi, N -- Eaton, S D -- Paranjpe, M -- New York, N.Y. -- Science. 1979 Apr 13;204(4389):177-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/373119" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Transformation, Neoplastic/pathology ; Cells, Cultured ; Connective Tissue/pathology ; Female ; Foreign-Body Reaction/*complications ; Mice ; Neoplasms, Experimental/*etiology ; *Plastics ; Sarcoma, Experimental/etiology ; Time Factors
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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