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  • *Apoptosis/drug effects  (1)
  • *Artificial Organs  (1)
  • 1
    Publication Date: 1993-07-16
    Description: Nerve growth factor (NGF) binding to cellular receptors is required for the survival of some neural cells. In contrast to TrkA, the high-affinity NGF receptor that transduces NGF signals for survival and differentiation, the function of the low-affinity NGF receptor, p75NGFR, remains uncertain. Expression of p75NGFR induced neural cell death constitutively when p75NGFR was unbound; binding by NGF or monoclonal antibody, however, inhibited cell death induced by p75NGFR. Thus, expression of p75NGFR may explain the dependence of some neural cells on NGF for survival. These findings also suggest that p75NGFR has some functional similarities to other members of a superfamily of receptors that include tumor necrosis factor receptors, Fas (Apo-1), and CD40.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rabizadeh, S -- Oh, J -- Zhong, L T -- Yang, J -- Bitler, C M -- Butcher, L L -- Bredesen, D E -- AG10671/AG/NIA NIH HHS/ -- NS10928/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):345-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of California, Los Angeles 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332899" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis/drug effects ; Cell Line ; Cell Survival/drug effects ; Culture Media, Serum-Free ; Nerve Growth Factors/*metabolism/pharmacology ; Neurons/*cytology/drug effects/metabolism ; PC12 Cells ; Receptors, Nerve Growth Factor/metabolism/*physiology ; Transfection
    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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  • 2
    Publication Date: 2006-03-18
    Description: Artificial muscles and electric motors found in autonomous robots and prosthetic limbs are typically battery-powered, which severely restricts the duration of their performance and can necessitate long inactivity during battery recharge. To help solve these problems, we demonstrated two types of artificial muscles that convert the chemical energy of high-energy-density fuels to mechanical energy. The first type stores electrical charge and uses changes in stored charge for mechanical actuation. In contrast with electrically powered electrochemical muscles, only half of the actuator cycle is electrochemical. The second type of fuel-powered muscle provides a demonstrated actuator stroke and power density comparable to those of natural skeletal muscle and generated stresses that are over a hundred times higher.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ebron, Von Howard -- Yang, Zhiwei -- Seyer, Daniel J -- Kozlov, Mikhail E -- Oh, Jiyoung -- Xie, Hui -- Razal, Joselito -- Hall, Lee J -- Ferraris, John P -- Macdiarmid, Alan G -- Baughman, Ray H -- New York, N.Y. -- Science. 2006 Mar 17;311(5767):1580-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083-0688, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16543453" target="_blank"〉PubMed〈/a〉
    Keywords: *Artificial Organs ; Biomechanical Phenomena ; *Biomimetic Materials ; Bionics ; Electric Power Supplies ; Electrochemistry ; *Electrodes ; Hydrogen/chemistry ; Lifting ; *Muscle, Skeletal/physiology ; *Nanotubes, Carbon ; Oxidation-Reduction ; Oxygen/chemistry ; Robotics ; Stress, Mechanical
    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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