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  • 1970-1974  (4)
  • 1965-1969  (1)
  • absorption  (3)
  • Cell & Developmental Biology  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 49 (1971), S. 1218-1222 
    ISSN: 1432-1440
    Keywords: Small intestine ; absorption ; methods ; Dünndarm ; Resorption ; Methoden
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über eine neu entwickelte automatisierte Methode der segmentalen Dünndarmperfusion berichtet, die ein dreilumiges Sondensystem (Ingelfinger et al.) verwendet. Durch die erreichte Vereinfachung der Technik erscheint es möglich, diese Methode jetzt auch in Kliniken, vor allem in der speziellen gastroenterologischen Diagnostik einzusetzen. An Hand von Mehrfachmessungen am gleichen Patienten wird die Reproduzierbarkeit der Ergebnisse und die Validität der Methodik herausgestellt und ihr Vorteil gegenüber bisher gebräuchlichen Verfahren diskutiert.
    Notes: Summary An automatic perfusion system for segmental measurements of intestinal absorption is described. This makes use of the triple-lumen tube according to Ingelfinger and coworkers. Its application for diagnostic procedures in routine gastroenterology is shown. The reliability of the data obtained is demonstrated by repeated measurements in the same patient. The advantage of this method is discussed in comparison with the techniques hitherto used.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 50 (1972), S. 1060-1061 
    ISSN: 1432-1440
    Keywords: Silymarin ; absorption ; rats ; Silymarin ; Resorption ; Ratten
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Mittels eines von Wagner, Hörhammer und Seitz [2] angegebenen spektrophotometrischen Verfahrens wurde nach Applikation hoher Dosen Silymarin bei der Ratte nachgewiesen, daß rund 75% wieder im Kot ausgeschieden werden. Ein Nachweis von Silymarin im Serum und im Urin sowie im Leberhomogenisat gelang mit der angegebenen Methode nicht.
    Notes: Summary In rats, large amounts of Silymarin (about 75%) will be excreted in the faces. This could be demonstrated with the spectroscopic method of Wagner, Hörhammer and Seitz [2]. The method applied did not permit to demonstrate the presence of Silymarin in serum, urine or liver homogenates.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Keywords: Small intestine ; sprue-syndrome ; absorption ; relationship with mucosal structure ; Dünndarm ; Sprue-Syndrom ; Resorption ; Beziehung zur Schleimhautstruktur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurde die Beziehung zwischen Funktionsstörung und Schleimhautumbau des Dünndarms bei Patienten mit einem Sprue-Syndrom vor und nach Behandlung untersucht. Diese Befunde wurden denen eines normalen Kontrollkollektivs gegenübergestellt. Darüber hinaus wurde der Gehalt einiger histochemisch nachweisbarer Enzymaktivitäten des Resorptionsepithels semiquantitativ abgeschätzt. Als Parameter der Schleimhautoberfläche wurde die Zottenhöhe, der Zottenumfang pro mm Darmlänge und die Epithelzellzahl pro mm Darmlänge herangezogen. Als Parameter der Transportfunktion wurde die Glucose-, Elektrolyt-und Wasserresorption mittels einer automatisierten dreilumigen Sondentechnik gemessen. Ergebnisse. 1. Die Glucoseresorption der Patienten mit dem unbehandelten Sprue-Syndrom beträgt weniger als 20%, die der behandelten Patienten weniger als 60% der Kontrollen. 2. Der Natrium-, Kalium- und Wassertransport ist bei den unbehandelten Patienten im Sinne einer Sekretion in das Lumen umgekehrt. Diese Umkehr ist bei den behandelten Patienten für Wasser und Natrium nicht nachweisbar, für Kalium jedoch unverändert vorhanden. 3. Zwischen der Glucose-, Natrium-, Kalium- und Wasserresorption einerseits und der Zottenhöhe, dem Zottenumfang pro mm Darmlänge und der Epithelzellzahl pro mm Darmlänge andererseits besteht eine hochsignifikante lineare Beziehung. 4. Der Enzymgehalt des Resorptionsepithels ist beim Sprue-Syndrom erwartungsgemäß herabgesetzt. Nach den korrelierenden morphologischen und funktionellen Befunden scheint die Transportminderung jedoch vorwiegend zu Lasten der reduzierten Resorptionsfläche zu gehen.
    Notes: Summary The relationship between structure and function of the small intestinal mucosa has been studied in treated and untreated sprue and in normal individuals. Glucose, electrolyte and water absorption, as well as histochemically detectable enzymatic activities, have been employed as functional parameters. Villus circumference and height, crypt length and the number of absorptive cells per unit length were used to indicate structural change. Results: 1) Glucose absorption was less than 20% of the control value in patients with untreated sprue and less than 60% in treated sprue. 2) Sodium, potassium and water transport in the untreated condition was reversed, i.e. secreted into the lumen. After treatment, potassium was still secreted, but water and sodium were again absorbed. 3) A highly significant linear relationship existed between glucose, sodium, potassium and water absorption on the one hand, and villus height as well as villus circumference and number of absorptive cells per mm length of intestine on the other. 4) The enzymatic activities of the absorptive cells were reduced. However, according to statistical analysis of the structural and functional data, the observed reduction in transport seemed to be mainly related to decreased surface area.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 179 (1974), S. 253-271 
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Ultrastructural changes of rat blastocysts during delayed implantation were studied 16, 20, 24 or 30 hours after estrogen was given to induce implantation.In the inner cell mass the presence of long cytoplasmic processes penetrating deeply into the neighboring inner cell mass cells is seen at 16 hours. Most cells also show an increased number of ribosomes, polyribosomes and granular endoplasmic reticulum.The trophoblast is featured by the formation of large amounts of glycogen and many inclusion bodies. Glycogen granules appear first in some abembryonic trophoblast cells at 16 hours, and spread to the embryonic pole at 24 hours. New inclusion bodies appear sequentially: multivesicular bodies at 20 hours, multigranular bodies at 24 hours and lamellar bodies at 30 hours. The functions of these inclusion bodies remain to be studied.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0002-9106
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Phase microscopic investigations of Kolmer-fixed, depigmented sections of the adult chicken retina have provided photomicrographic evidence of the existence of three different photoreceptors: single rods, single cones, and double cones. The rod extends the entire thickness of the visual cell layer and is characterized by a uniformly thick outer segment and a hyperboloid-containing inner segment which is devoid of an oil droplet. The single cone is the shortest element; it contains a red oil droplet. The double cone consists of two unequal members, a tall, slender chief cone and a broad accessory cone. The chief component contains a large yellow oil droplet, whereas the accessory cone houses a small, oval, yellowish-green droplet and a characteristically large, oval paraboloid. The rod hyperboloid and the accessory cone paraboloid contain glycogen. No colorless droplets have been observed. Owing to the close association between oil droplet color and cone type, three colored layers of oil droplets are formed within the thickness of the retina: a proximal row of red droplets (the short, single cones), an intermediate layer of yellowish-green droplets (the accessory cones), and a distal row of yellow droplets (the tall chief cones).
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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