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  • Inorganic Chemistry  (2)
  • Regeneration  (2)
  • *Tropical Climate  (1)
  • Animals  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Presence of embryonic myosin in normal postural muscles of the adult rat (1995)
    Springer
    Cell & tissue research 280 (1995), S. 541-548 
    Details
    ISSN: 1432-0878
    Keywords: Key words: Musle ; striated ; skeletal ; Regeneration ; Myosin ; Immunocytochemistry ; Rat (Sprague Dawley)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Indirect immunofluorescence was used to localize embryonic myosin heavy chains in soleus, adductor longus, tibialis anterior, plantaris, and extensor digitorum longus muscles of 6-month-old rats. A monoclonal antibody (2B6), specifically recognizing rat embryonic myosin, was applied to unfixed, transverse, frozen sections. The number of embryonic myosin-positive (EMP) extrafusal fibers was expressed as a percentage of the total number of fibers. EMP extrafusal fibers were only seen in the soleus and adductor longus muscles, both postural muscles. Approximately 1% of the soleus muscle fibers appeared positively stained for embryonic myosin. The majority of such fibers had a small diameter (〈500 μ2), appeared intensely fluorescent, and typically contained central nuclei. Re-expression of embryonic myosin due to spontaneous fiber denervation is not a likely factor in this study, since alpha-bungarotoxin and N-CAM localization were restricted to the motor end-plate region of EMP fibers. Since embryonic myosin was shown to disappear in all normal-sized myofibers by 2 to 3 months of age, the results suggest that the EMP extrafusal fibers seen in postural muscles of 6 to 12-month-old animals are regenerating myofibers. We speculate that a small number of muscle fibers may be regenerating in normal, adult postural muscles, in response to fiber damage possibly caused by excessive recruitment or overloading.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318358
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  • 2
    Electronic Resource
    Electronic Resource
    Presence of embryonic myosin in normal postural muscles of the adult rat (1995)
    Springer
    Cell & tissue research 280 (1995), S. 541-548 
    Details
    ISSN: 1432-0878
    Keywords: Musle, striated, skeletal ; Regeneration ; Myosin ; Immunocytochemistry ; Rat (Sprague Dawley)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Indirect immunofluorescence was used to localize embryonic myosin heavy chains in soleus, adductor longus, tibialis anterior, plantaris, and extensor digitorum longus muscles of 6-month-old rats. A monoclonal antibody (2B6), specifically recognizing rat embryonic myosin, was applied to unfixed, transverse, frozen sections. The number of embryonic myosin-positive (EMP) extrafusal fibers was expressed as a percentage of the total number of fibers. EMP extrafusal fibers were only seen in the soleus and adductor longus muscles, both postural muscles. Approximately 1% of the soleus muscle fibers appeared positively stained for embryonic myosin. The majority of such fibers had a small diameter (〈500 ν), appeared intensely fluorescent, and typically contained central nuclei. Re-expression of embryonic myosin due to spontaneous fiber denervation is not a likely factor in this study, since alpha-bungarotoxin and N-CAM localization were restricted to the motor end-plate region of EMP fibers. Since embryonic myosin was shown to disappear in all normal-sized myofibers by 2 to 3 months of age, the results suggest that the EMP extrafusal fibers seen in postural muscles of 6 to 12-month-old animals are regenerating myofibers. We speculate that a small number of muscle fibers may be regenerating in normal, adult postural muscles, in response to fiber damage possibly caused by excessive recruitment or overloading.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318358
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  • 3
    Electronic Resource
    Electronic Resource
    Dünnschichtchromatographie der Chloro-Cyclophosphazene. II. Zur Trennung der Chloro-Cyclophosphazene (NPCI2)n (n=3-15)Der Hauptteil diese Beitrags wurde auf dem II. Symposium (IUPAC) über Anorganische Phosphorverbindungen, Prag 9.-13. September 1974 vorgetragen. (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 423 (1976), S. 273-279 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thin Layer Chromatography of Chloro-Cyclophosphazenes. II. Separation of Chloro-Cyclophosphazenes (NPCl2)n (n=3-15)Thin layer chromatography on silica gel was used for separation of higher members of homologic series of Chloro-Cyclophosphazenes. Under the indicated conditions spots of 13 substances with help of new and selective detection reagents were located. The Rf values of the substance were mathematically worked up and the probable influences that enables the separation were discussed.
    Notes: Dünnschichtchromatographie auf Silicagel wurde zur Trennung der höheren Glieder der homologen Reihe von Chloro-Cyclophosphazenen benutzt. Unter den beschriebenen Arbeitsbedingungen wurden Flecke von 13 Stoffen mit neuen empfindlichen und selektiven Nachweisverfahren ermittelt. Die Rf-Werte wurden mathematisch bearbeitet, und die wahrscheinlichen Einflusse, die die Trennung ermöglichen, wurden diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764230313
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  • 4
    Electronic Resource
    Electronic Resource
    Dünnschichtchromatographie der Chloro-Cyclophosphazene. I. Zur Trennung der Oligomeren Chloro-Cyclophosphazene [NPCL2]n (n = 3 - 7)Vorgetragen auf dem II. Symposium (IUPAC) on Inorganic Phosphorous Compounds, Prag, 9.-13. September 1974. (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 416 (1975), S. 187-192 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thin Layer Chromatography of Chloro-Cyclophosphazenes I. Separation of Oligomers [MNCL2]n (n = 3 - 7)This paper presents a separation study of cyclo-chlorophosphazenes by means of thin layer chromatography on silica gel and a new sensitive method of detection of these separated substances. The chromatographic behavior of oligomers (n = 3-7) of the homologic series [NPCL2]n was experimentally studied. The Rf values of the substances were correlated with their molecular weights. As a result a Quasi-linear function was obtained for the members with n = 4-7.
    Notes: Es wurde eine Methode zur selektiven Trennung der Chlorocyclophosphazene mittels Dünnschichtchromatographie auf Silicagel und ein neues Nachweisverfahren für diesen Verbindungstyp ausgearbeitet. Experimentell wurden die Glieder der homologen Reihe [NPCL2]n bis zum Cyclo-Heptaphosphazaheptaendekaterachlorid Getrennt. Die Rf-Werte der Homologen [NPCL2]n bis [NPCL2]7 besitzen, in Abhängigkeit von der Anzahl der Phosphoratome, einen Quasi-Linearen Verlauf.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19754160211
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  • 5
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    Long-term change in the nitrogen cycle of tropical forests (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-11-05
    Description: Deposition of reactive nitrogen (N) from human activities has large effects on temperate forests where low natural N availability limits productivity but is not known to affect tropical forests where natural N availability is often much greater. Leaf N and the ratio of N isotopes (delta(15)N) increased substantially in a moist forest in Panama between ~1968 and 2007, as did tree-ring delta(15)N in a dry forest in Thailand over the past century. A decade of fertilization of a nearby Panamanian forest with N caused similar increases in leaf N and delta(15)N. Therefore, our results indicate regional increases in N availability due to anthropogenic N deposition. Atmospheric nitrogen dioxide measurements and increased emissions of anthropogenic reactive N over tropical land areas suggest that these changes are widespread in tropical forests.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hietz, Peter -- Turner, Benjamin L -- Wanek, Wolfgang -- Richter, Andreas -- Nock, Charles A -- Wright, S Joseph -- New York, N.Y. -- Science. 2011 Nov 4;334(6056):664-6. doi: 10.1126/science.1211979.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Botany, University of Natural Resources and Life Sciences, Gregor Mendel-Strasse 33, 1180 Vienna, Austria. peter.hietz@boku.ac.at〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22053047" target="_blank"〉PubMed〈/a〉
    Keywords: *Nitrogen Cycle ; Panama ; Plant Leaves ; Thailand ; *Trees ; *Tropical Climate
    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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  • 6
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    Skeletal muscle: length-dependent effects of potentiating agents (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-02
    Description: The ability of vertebrae skeletal muscle to contract more vigorously than normal in the presence of potentiating agents depends on the initial length of a muscle cell. Other factors such as the intracellular calcium ion transient, temperature, chemical nature of the potentiating agent, and the ratio of intrinsic twitch to tetanic force influence the degree of contractile potentiation but cannot account for the length dependence. At least part of a muscle cell seems normally less than fully active during contractions not only at short lengths but also at optimal sarcomere lengths.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lopez, J R -- Wanek, L A -- Taylor, S R -- NS 14268/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 2;214(4516):79-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6974399" target="_blank"〉PubMed〈/a〉
    Keywords: Aequorin ; Animals ; Calcium/*physiology ; In Vitro Techniques ; *Muscle Contraction/drug effects ; Muscles/*physiology/ultrastructure ; Rana temporaria ; Temperature ; Zinc/pharmacology
    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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