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  • Cholesterin-Ester  (1)
  • stars:Wolf-Rayet  (1)
  • 1
    ISSN: 1432-1440
    Keywords: Atherogenese ; Arterieller Hochdruck ; Cholesteringefütterten Kaninchen ; Cholesterin-Ester ; Phospholipide ; Atherogenesis ; Hypertension ; Cholesterol-fed rabbits ; Cholesterol Ester ; Phospholipid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The effect of prior hypertension on the in vitro incorporation of [1-14C]-oleate into phospholipid and cholesterol ester in aortae from cholesterolfed and normal fed rabbits was studied. Incorporation of [1-14C]-oleate into phospholipid was not increased in aortae from either hypertensive normal-fed or hypertensive cholesterol-fed rabbits when compared to the appropriate normotensive controls. In the normal-fed rabbits, incorporation of [1-14C]-oleate into cholesterol ester was increased by hypertension in all aortic regions. In cholesterol-fed rabbits cholesterol esterification was found to be proportional to the intimal cholesterol concentration, irrespective of the prior blood pressure or the particular aortic region studied. It is concluded that the increased lipid synthesis in atherosclerotic vessels from hypertensive rabbits is a consequence of the increased lipid accumulation produced by hypertension and not the result of hypertension directly stimulating arterial wall metabolism.
    Notes: Zusammenfassung Der Einfluß von früherem arteriellen Hochdruck auf den in-vitro Einbau (1-14C)-Oleat in Phospholipide und Cholesterin-Ester in Aorten von Cholesterin-gefütterten und normal-gefütterten Kaninchen wurde untersucht. Im Vergleich zu den respektiven normotensiven Kontroll-Tieren stieg der Einbau (1-14C)-Oleat in Phospholipide in Aorten von hypertensiv normal-gefütterten und hypertensiv Cholesterin-gefütterten Kaninchen nicht an. In normal-gefütterten Kaninchen wurde der Einbau der (1-14C)-Oleat in allen Gegenden der Aorta mit Hochdruck vermehrt. Bei Cholesterin-gefütterten Kaninchen wurde die Cholesterin-Ester-Synthese der jeweiligen intimalen Cholesterin-Konzentration angemessen, unabhängig von welcher Aorten-Gegend untersucht wurde oder von der Höhe des früheren Blutdrucks. Daraus folgert, daß die gesteigerte Lipid-Synthese in atherosklerotischen Gefäßen hypertensiver Kaninchen eine Folge gesteigerter Lipidanhäufung ist, und nicht auf einen vom Hochdruck direkt vermehrten Arterienwandstoffwechsel zurückzuführen ist.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1572-946X
    Keywords: stars:Wolf-Rayet ; stars:X-rays ; stars:colliding winds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present new high spectral resolution X-ray observations of the colliding wind binaryγ Vel taken with the ASCA satellite. We find two spectral components, one of which is post-shock emission from the colliding winds. Spectral variability is also seen, consistent with current notions of colliding wind phenomena.
    Type of Medium: Electronic Resource
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