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  • 21.10.Ky  (2)
  • Gallenblasenentleerung  (2)
  • 21.10.K  (1)
  • 1
    ISSN: 1432-1440
    Keywords: Phenylalanin ; Resorption ; Pankreassekretion ; Gallenblasenentleerung ; Mensch ; Dünndarmperfusion ; Phenylalanine ; Absorption ; Pancreatic secretion ; Gallbladder emptying ; Man ; Small bowel perfusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The effects of varying loads of intraduodenal phenylalanine on pancreatic and gallbladder function were investigated in 32 healthy volunteers using a triple lumen perfusion system. L-phenylalanine absorption rates in the proximal jejunum were measured simultaneously. Intraduodenal L-phenylalanine produced a dose related increase in pancreatic secretion reaching the maximum at the concentration of 100 mM. Bilirubin outputs too increased significantly but did not parallel enzyme secretion. In contrast to the effect of L-phenylalanine, D-phenylalanine 50 mM did not stimulate pancreatic enzyme secretion and gallbladder emptying. The absorption rates of L-phenylalanine increased with rising luminal concentrations. There was a significant correlation between pancreatic secretion and L-phenylalanine absorption rates. This relationship suggests that the release of cholecystokinin, a hormone stimulating pancreatic and biliary function is dependant of the absorption of nutrients like amino acids.
    Notes: Zusammenfassung In der vorliegenden Studie wurde bei 32 Probanden mit einer intestinalen Perfusionstechnik die Resorption von L-Phenylalanin und die Wirkung verschiedener intraduodenaler L-Phenylalaninkonzentrationen auf die Pankreasenzymsekretion und Gallenblasenentleerung untersucht. L-Phenylalanin verursachte konzentrationsabhängig signifikante Steigerungen der Pankreasenzymsekretion, wobei das Maximum bei einer Konzentration von 100 mM erreicht wurde. Nach L-Phenylalaninperfusion kam es zur Gallenblasenentleerung, jedoch stieg der Bilirubinausstoß nicht in Abhängigkeit von der perfundierten Aminosäurekonzentration an. Im Gegensatz zu L-Phenylalanin verursachte D-Phenylalanin intraduodenal perfundiert keine Pankreasenzymsekretion und Gallenblasenentleerung. Die Resorptionsraten von L-Phenylalanin stiegen mit zunehmender intraluminaler Konzentration an. Zwischen Pankreasenzymausstoß und L-Phenylalaninresorptionsrate bestand eine signifikante Korrelation. Die Befunde zeigen, daß die Resorption von Nährstoffen wie z.B. von Aminosäuren die Freisetzung von Cholecystokinin und damit die Pankreassekretion und Gallenblasenentleerung steuert.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Bilirubin ; Gallenblasenentleerung ; Gallenblasenkontraktion ; Gallensäuren ; intestinale Perfusion ; Sonographie ; Bile acids ; Bilirubin ; Gallbladder contraction ; Gallbladder emptying ; Intestinal perfusion ; Ultrasonography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In ten healthy, male volunteers the intestinal perfusion technique with measurements of total biliary outputs and real-time ultrasonography were compared in their effecacy to assess gallbladder emptying. Cholecystokinin caused a significant rise in bilirubin and bile acid output and a marked decrease of the gallbladder area (66%) as measured by planimetry. The increase in biliary output paralleled the reduction of gallbladder area expressed as percent of the original gallbladder size. Both methods were equally efficacious in determining gallbladder emptying. Ultrasonography can therefore be employed as an easy and non invasive technique to study gallbladder kinetics in health and disease.
    Notes: Zusammenfassung Bei zehn gesunden, männlichen Probanden wurde die Gallenblasenentleerung sowohl durch die Bestimmung des Bilirubin- und Gallensäureausstoßes mit einer intestinalen Markerperfusion als auch durch die Messung der Gallenblasenverkleinerung mit einem real-time-Ultraschallgerät ermittelt. Cholecystokinin verursachte eine signifikante Zunahme des Bilirubin und Gallensäureausstoßes und eine Verkleinerung der Gallenblasenfläche um 66%, die planimetrisch bestimmt wurde. Die Verminderung der Gallenblasenfläche zeigte eine signifikante Korrelation mit der Zunahme des biliären Ausstoßes. Beide Bestimmungsverfahren waren in gleicher Weise geeignet, die Gallenblasenentleerung beim Menschen zu messen. Die Sonographie kann so als einfache und nicht invasive Methode zur Untersuchung der Gallenblasenmotilität beim Menschen bei physiologischen und pharmakologischen Fragestellungen eingesetzt werden.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1434-601X
    Keywords: 21.10.K ; 27.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Theg-factor of the 21 + state of192Pt has been measured by the IPAC technique in an external magnetic field as:g(21 +,192Pt)=+0.287(17). An additional IPAC experiment with an192IrFe sample was performed with the same level in order to investigate the hyperfine field. The result:ω L τ(21 +,192PtFe)=0.1115(9) gives the hyperfine field:B hf 4.2k (PtFe)=126.8(71) T. The result of an LTNO experiment with the same level is compatible with the assumption that 100% of the192Ir atoms were on unique sites.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 332 (1989), S. 247-250 
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 27.50.+ e ; 33.25.-j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract 69m,71mZn have been implanted with an isotope separator on-line into a cold iron host matrix. Nuclear magnetic resonance of the low-temperature oriented isotopes has been observed. The resonance frequencies for zero external magnetic field are vL(69mZnFe@#@) =36.814(35) MHz andv L (71mZnFe)=33.47(19) MHz. From these the magnetic moments of the 9/2+ iosmeric states have been derived as μ(69mZn)=(−)1.138(18) n.m. andμ(71mZn)=(−)1.035(18) n.m. The experimentally known magnetic moments of (vg 9/2)-levels in odd zinc isotopes are compared to theoretical estimates.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 322 (1985), S. 281-285 
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Low temperature nuclear orientation experiments have been performed with122,124Sb in Sb and Zn single crystals. The ratio of the quadrupole moments of124Sb and122Sb is derived from the data asQ 124/Q 122= +2.17 (11). The sign of the effective electric field gradient at the nuclear site of Sb was found to be negative for host Sb and positive for host Zn.
    Type of Medium: Electronic Resource
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