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  • 1
    ISSN: 1432-1076
    Keywords: Prematures ; Infants ; Children ; Cystic fibrosis ; Dystrophy ; Diagnosis ; Therapy ; Pancreatic enzyme substitution ; Fecal fat ; Digestion ; Feces ; Tryptic activity ; Chymotryptic activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Unter gewissen Voraussetzungen ist die Bestimmung der tryptischen, besonders aber der chymotryptischen Aktivität im Stuhl vor allem während der ersten 4–6 Lebenswochen als wichtige Maßnahme in der Diagnostik der Mucoviscidosis anzusehen. Nach Absetzen des Pankreasenzympräparates fällt die tryptische und chymotryptische Aktivität des Stuhles Mucoviscidosis-kranker Kinder ab. Nach Verabfolgung des Präparates steigt die Enzymaktivität in Abhängigkeit von der Höhe der Dosis an und erreicht die Aktivitätswerte altersentsprechender gesunder Kinder. Ein Vergleich zwischen der proteolytischen Aktivität und dem Fettgehalt des Stuhles im Rahmen von Untersuchungsperioden ohne Gabe des Pankreasenzympräparates und bei unterschiedlicher Dosierung des Präparates läßt eine signifikante Korrelation der beiden Parameter vermissen. Es ist nicht erlaubt, aus einer hohen proteolytischen Aktivität des Stuhles auf eine entsprechend verminderte Fettausscheidung zu schließen, da sich fäkale proteolytische Aktivität und Fettausscheidung nicht umgekehrt proportional zueinander verhalten. Man kann deshalb die Höhe der proteolytischen Aktivität im Stuhl von Mucoviscidosis-Patienten nicht als allgemeinen Maßstab für die gesamte Verdauungsleistung bei Pankreasenzymsubstitution betrachten.
    Notes: Abstract Under certain conditions the determination of the tryptic activity, especially of the chymotryptic activity in the feces mostly of infants in the first 4–6 weeks of life is considered to be an important step in the diagnosis of cystic fibrosis. The tryptic and chymotryptic activity in the feces of children with cystic fibrosis declines when the substitution of pancreatic enzymes is stopped. On resubstitution, the activity rises in relation to the dose and attains the activity related to age as found in healthy children. A comparison of the proteolytic activity with the fat content of the feces during the study period without the enzyme substitution and during the period when the enzyme dosage varied showed no significant correlation. It is not possible to postulate a poor excretion of fats merely from the high proteolytic activity of the feces because the fecal proteolytic activity and the fat excretion are not inversely proportional to one another. For this reason, one cannot conclude that the grade of the proteolytic activity in the feces of patients with cystic fibrosis is a yardstick for the total digestive process when they are under pancreatic enzyme substitution.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 161 (1986), S. 341-345 
    ISSN: 0009-8981
    Keywords: Adenosine deaminase ; Children ; Maturation ; Respiratory disease ; T-Cell ; Tuberculosis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Child's nervous system 16 (2000), S. 251-255 
    ISSN: 1433-0350
    Keywords: Key words Moyamoya disease ; Brain stem glioma ; Children ; Surgical treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  An 8-year-old boy was found to have primary moyamoya disease associated with a brain stem glioma. For over 3 years the child had experienced transient ischemic attacks induced by hyperventilation. One month before referral to our hospital he had presented with progressive left facial nerve palsy. Magnetic resonance imaging showed a cystic mass in the lower pons. Angiography revealed severe bilateral stenosis of the internal carotid arteries and prominent moyamoya vessels in the basal ganglia. Partial resection of the tumor yielded a histological diagnosis of pilocytic astrocytoma. Local radiation therapy reduced the size of the tumor. Anastomosis of the superficial temporal arteries and middle cerebral arteries on both sides was then performed. After direct bypass surgery, the patient remained in a good condition for a 5-year follow-up period. Clinical investigation of the coincidence of primary moyamoya disease and brain stem glioma led the authors to conclude that these two diseases coexisted independently.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 154 (1974), S. 321-327 
    ISSN: 1432-0878
    Keywords: Pituitary ; Mouse ; Pars intermedia ; Adrenoglomerulotropin ; Morphometric cytology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Ultrastructural changes in the pars intermedia of the mouse pituitary caused by dietary sodium deprivation were investigated quantitatively. Of the six classes of organelles and inclusions selected for analysis in the pars intermedia cells, only the mitochondria showed no significant changes, while all of the remaining classes showed statistically significant changes. The most conspicuous changes were an abrupt decrease in the number of secretory granules and the appearance of parallel arrays of rough endoplasmic reticulum. The Golgi apparatus also showed hypertrophy accompanied by newly formed granules. The number of vesicles increased temporarily and then decreased. These findings indicate that dietary sodium depletion, a stimulus to greater aldosterone secretion, causes significant changes in the pars intermedia cells within 3 days, and these signs of hyperfunction last up to 5 days. The present study suggests a possible new role of the pars intermedia in the regulation of aldosterone secretion in response to dietary sodium deprivation in the mouse.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0878
    Keywords: Pituitary ; Mouse ; Pars intermedia ; Adrenoglomerulotropin ; Morphometric cytology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Fine structural alterations were investigated in cells of the pars intermedia of the pituitary of mice treated for four weeks with (a) a sodium deficient diet, (b) a sodium deficient diet mixed with propranolol (renininhibitor), (c) a sodium deficient diet combined with propranolol and aminoglutethimide (corticosterone 18-hydroxylase inhibitor), and (d) a sodium deficient diet combined with propranolol, aminoglutethimide and dexamethasone. The number of secretory granules decreased from 5.0/μm2 in the normal control to 2.4/μm2 in all four experimental groups suggesting that the cells in treated groups had reached an equilibrium in the production and release of secretory granules during the chronic treatments. The number of immature Golgi granules per unit Golgi area was 0.91 in the control, while this value rose to 3.29 (3.62 fold of the control), 4.37 (4.8 fold), 4.94 (5.43 fold) and 5.16 (5.67 fold) respectively in the four experimental groups. In these groups a good correlation was observed between the number of immature granules and the percent volume of rough endoplasmic reticulum (r=0.985, p〈0.01). The present study suggests that the pars intermedia contains an unidentified pituitary factor (or factors) essential for aldosterone biosynthesis.
    Type of Medium: Electronic Resource
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