Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-2307
    Keywords: Cardiac malformations ; Primitive aortic conus persistence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Anhand einer bisher nicht beschriebenen, durch die Persistenz des primitiven Aortenconus und regelrechte Stellung der großen Gefäße charakterisierten Herzmißbildung werden die Bulbusresorptionstheorie und die Conuswachstumshypothese erörtert. Die Persistenz des primitiven Aortenconus ist auf eine fehlende Bulbusschrumpfung zurück-zuführen. Aus der bei diesem Falle vorliegenden selektiven Hemmung der Bulbusrückbildung bei typischer Stellung der großen arteriellen Gefäße geht hervor, daß sie ein von der Transposition formal unabhängiges Phänomen ist. Die Konzeption, die zur Erklärung der formalen Genese der Transposition einen Arrest der Bulbustruncustorsion zugrunde legt, findet hiermit eine erneute Bestätigung.
    Notes: Summary A hitherto undescribed cardiac malformation, characterized by persistence of the primitive aortic conus and normal positioning of the great vessels, is reported and used to discuss the theory of bulbar resorption and the hypothesis of conal growth. The persistence of the primitive aortic conus is explained by the absence of bulbar contraction. The present selective inhibition of bulbar involution in normal positioning of the great vessels shows it to be a phenomenon formally independent of the transposition. Thus, the concept explaining the formal genesis of transposition is explained by arrest of torsion of the bulbar truncus is reconfirmed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 363 (1974), S. 249-258 
    ISSN: 1432-2307
    Keywords: Hypertensin (Angiotensin) ; Catecholamins ; So-Called Epinephrine Myocarditis ; Rat Heart ; Optical Microscopy ; Electron Microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Pathomorpliological comparative studies on structural damage to rat cardiac muscle following administration of hypertensin and arterenol, with and without pretreatment with reserpine to empty the catecholamine reserves were performed. The question is whether and to what degree angiotensin induced cardiac damage, which is viewed microscopically as the so-called epinephrine myocarditis, can be regarded as an indirect catecholamine effect. The following could be deduced: 1. Hypertensin causes a damage pattern similar to that of arterenol as seen under the light microscope and corresponds to the so-called epinephrine myocarditis. 2. The electron microscope demonstrates definite differences in the pattern of damage to the myocardium: hypertensin affects primarily the mitochondria, while arterenol affects the myofibrils. 3. Hypertensin and arterenol damage mainly the subendocardial tissue of the left heart: hypertensin affects more the region of the base of the left ventricle, arterenol more the region of the left ventricle apex. 4. Pretreatment with reserpine blocks the damaging effects of hypertensin in the rat heart for 12 hours. After 24 hours the full picture of the damage pattern has reappeared. Arterenol is lethal to animals pretreated with reserpine. 5. The pathogenesis of the damaging effects of hypertensin on rat cardiac muscle is discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...