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  • AEROSPACE MEDICINE  (3)
  • Molecular Sequence Data  (2)
  • 2000-2004  (2)
  • 1980-1984  (3)
  • 1940-1944
  • 1
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    Isolating "uncultivable" microorganisms in pure culture in a simulated natural environment (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-11
    Description: The majority (〉99%) of microorganisms from the environment resist cultivation in the laboratory. Ribosomal RNA analysis suggests that uncultivated organisms are found in nearly every prokaryotic group, and several divisions have no known cultivable representatives. We designed a diffusion chamber that allowed the growth of previously uncultivated microorganisms in a simulated natural environment. Colonies of representative marine organisms were isolated in pure culture. These isolates did not grow on artificial media alone but formed colonies in the presence of other microorganisms. This observation may help explain the nature of microbial uncultivability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaeberlein, T -- Lewis, K -- Epstein, S S -- New York, N.Y. -- Science. 2002 May 10;296(5570):1127-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biology Department, Northeastern University, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12004133" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/classification/cytology/*growth & development/*isolation & purification ; *Bacteriological Techniques ; Colony Count, Microbial ; Culture Media ; DNA, Bacterial/analysis/genetics ; DNA, Ribosomal/analysis/genetics ; Diffusion Chambers, Culture ; Geologic Sediments/*microbiology ; Molecular Sequence Data ; RNA, Ribosomal, 16S/genetics ; *Seawater ; Silicon Dioxide
    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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    PAPER CURRENT
  • 2
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    Role of the myosin assembly protein UNC-45 as a molecular chaperone for myosin (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-26
    Description: The organization of myosin into motile cellular structures requires precise temporal and spatial regulation. Proteins containing a UCS (UNC-45/CRO1/She4p) domain are necessary for the incorporation of myosin into the contractile ring during cytokinesis and into thick filaments during muscle development. We report that the carboxyl-terminal regions of UNC-45 bound and exerted chaperone activity on the myosin head. The amino-terminal tetratricopeptide repeat domain of UNC-45 bound the molecular chaperone Hsp90. Thus, UNC-45 functions both as a molecular chaperone and as an Hsp90 co-chaperone for myosin, which can explain previous findings of altered assembly and decreased accumulation of myosin in UNC-45 mutants of Caenorhabditis elegans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barral, Jose M -- Hutagalung, Alex H -- Brinker, Achim -- Hartl, F Ulrich -- Epstein, Henry F -- New York, N.Y. -- Science. 2002 Jan 25;295(5555):669-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11809970" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Binding Sites ; Caenorhabditis elegans/genetics/*metabolism ; Caenorhabditis elegans Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cloning, Molecular ; HSP70 Heat-Shock Proteins/genetics/metabolism ; HSP90 Heat-Shock Proteins/genetics/metabolism ; Molecular Chaperones/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Myosins/*metabolism ; Peptide Fragments/metabolism ; Protein Binding ; Protein Structure, Tertiary ; Recombinant Proteins/chemistry/metabolism
    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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    Effects of water immersion on plasma catecholamines in normal humans (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: An investigation was conducted in order to determine whether water immersion to the neck (NI) alters plasma catecholamines in normal humans. Eight normal subjects were studied during a seated control study (C) and during 4 hr of NI, and the levels of norepinephrine (NE) and epinephrine (E) as determined by radioenzymatic assay were measured hourly. Results show that despite the induction of a marked natriuresis and diuresis indicating significant central hypervolemia, NI failed to alter plasma NE or E levels compared with those of either C or the corresponding prestudy 1.5 hr. In addition, the diuresis and natriuresis was found to vary independently of NE. These results indicate that the response of the sympathetic nervous system to acute volume alteration may differ from the reported response to chronic volume expansion.
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology (ISSN 0161-7567); 54; Jan. 198
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    NASA TECHNICAL REPORTS
  • 4
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    Characterization of renal response to prolonged immersion in normal man (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: ?jDuring the initial phase of space flight, there is a translocation of fluid from the lower parts of the body to the central vascular compartment with a resultant natriuresis, diuresis, and weight loss. Because water immersion is regarded as an appropriate model for studying the redistribution of fluid that occurs in weightlessness, an immersion study of relatively prolonged duration was carried out in order to characterize the temporal profile of the renal adaptation to central hypervolemia. Twelve normal male subjects underwent an immersion study of 8-h duration in the sodium-replete state. Immersion resulted in marked natriuresis and diuresis which were sustained throughout the immersion period. The failure of that natriuresis and diuresis of immersion to abate or cease despite marked extracellular fluid volume contraction as evidenced by a mean weight loss of -2.2 + or - 0.3 kg suggests that central blood volume was not restored to normal and that some degree of central hypervolemia probably persisted.
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Applied Physiology: Respiratory; vol. 49
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Effects of vasopressin administration on diuresis of water immersion in normal humans (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The influence of vasopressin suppression on the diuresis encountered during water immersion is investigated in studies on normal humans immersed to the neck. Six hydrated male subjects were studied on two occasions while undergoing 6 h of immersion without or during the administration of aqueous vasopressin for the initial 4 h. Neck immersion is found to result in a significant increase in urinary flow rate beginning in the first hour and persisting throughout the immersion. The administration of vasopressin markedly attenuated the diuretic response throughout the period of infusion, while cessation of vasopressin administration during the final 2 h of immersion resulted in a marked offset of the antidiuresis. Results thus support the view that the suppression of antidiuretic hormone contributes to the immersion diuresis of hydrated subjects.
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Applied Physiology: Respiratory; vol. 51
    Format: text
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    NASA TECHNICAL REPORTS
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