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: 1433-2965
    Keywords: Calcium citrate ; Calcium lactogluconate/carbonate ; Intestinal calcium absorption ; Osteoporosis and calcium supplementation ; Stable isotopes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Not only is the calcium content of a preparation significant for providing adequate calcium supplementation for the prophylaxis and therapy of osteoporosis, but also its bioavailablity is of essential importance. In the present study, the bioavailability of calcium citrate and calcium lactogluconate/carbonate from a therapeutic dose (= 500 mg Ca2+) was compared in men aged between 45 and 60 years on an intra-individual basis. Calcium citrate was administered both as a solution and as a suspension to 18 healthy volunteers. Using a double-isotope method, the intestinal absorption from the three preparations was determined in randomized order at intervals of 2–4 weeks. The stable isotope44Ca (20 mg), in highly enriched form, was added in each case to the ready-to-drink solutions and, at the same time, a sterile and pyrogen-free solution containing 5 mg of the stable isotope42Ca was injected intravenously. The intestinal calcium absorption was then determined after 24 h on the basis of the ratio of the two isotopes in the plasma. There was a significantly higher absorption of 29% from the citrate solution than from the lactogluconate/carbonate solution (25%). Absorption from the citrate suspension was similar to that from the lactogluconate/carbonate solution. While no correlation was found between the measured values for calcium absorption from the three preparations and the plasma concentration of 1,25-dihydroxycholecalciferol, significant inverse correlations with the basal parathyroid hormone concentration were observed for the citrate and lactogluconate/carbonate solution. The results of this study show that quantitative data on intestinal calcium absorption can be obtained without employing radioactive isotopes in humans. Moreover, they show that calcium absorption is not determined only by the solubility and the degree of ionization of the calcium salt administered, but rather that it is of a complex nature.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 0340-1855
    Keywords: Schlüsselwörter Genetische Hämochromatose ; Hämochromatotische Arthropathie ; Chondrocalcinose ; HLA-Muster ; Metacarpophalangeal-Gelenke ; Key words Genetic hemochromatosis ; hemochromatotic arthropathy ; chondrocalcinosis ; HLA-pattern ; metacarpophalangeal joints
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nach neuen epidemiologischen Untersuchungsergebnissen ist die genetische Hämochromatose eine der häufigsten genetisch determinierten Stoffwechselerkrankungen in der kaukasischen Population. Die lebenslang währende Eisenüberladung führt bei mehr als der Hälfte der Patienten zu einer teilweise schweren Arthropathie. Die hämochromatotische Arthropathie wird häufig als Arthrose oder Rheumatoide Arthritis fehlgedeutet, obwohl sie einige recht typische Besonderheiten aufweist. Bei ca. 5000 Patienten, die in die Rheumasprechstunden der Kliniken Bad Nauheim und Frankfurt wegen unterschiedlichster rheumatologischer Diagnosen überwiesen wurden, konnten bislang 11 Patienten mit manifester Hämochromatose aufgrund des typischen Gelenkbefalls entdeckt werden. In allen Fällen fanden sich bereits ausgeprägte Organschädigungen, so daß die Lebenserwartung dieser Patienten eingeschränkt ist. Diese Untersuchung zeigt, daß die genetische Hämochromatose eine häufig übersehene Erkrankung ist. Die Kenntnis des Befallsmusters kann zur frühen Diagnose einer genetischen Hämochromatose führen und somit Organschäden vermeiden.
    Notes: Summary Recent studies have shown a high frequency of genetic hemochromatosis in the Caucasion population. In addition, the well known organ involvement of genetic hemochromatosis was evident; more than 50% of patients develop a typical arthropathy which may result in severe physical disability. Among approximately 5000 patients referred to the rheumatology outpatient clinics of Bad Nauheim and Frankfurt with different rheumatologic diagnoses, 11 patients with typical signs of hemochromatotic arthropathy were identified. In none of those cases had the diagnosis “genetic hemochromatosis” been previously established. These patients had been treated for rheumatoid arthritis and other rheumatologic disorders over several years. All showed severe organ dysfunction due to iron overload, resulting in a reduced life expectancy. This investigation shows that knowledge of the typical signs of hemochromatotic arthropathy could lead to an earlier diagnosis of genetic hemochromatosis which is necessary to prevent the complications of iron overload in those patients.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 49 (1971), S. 927-930 
    ISSN: 1432-1440
    Keywords: Acetylsalicyclic acid ; Gastrointestinal blood loss ; Human counter ; Acetylsalicylsäure ; Gastrointestinalblutung ; Ganzkörperzähler
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 9 Versuchspersonen wurde der Blutverlust innerhalb von 50 Tagen mit zwei 14tägigen Einnahmeperioden von Aspirin (1,5 g/d) bzw. Colfarit (1,5 g/d) bestimmt. Bei keinem der beiden Präparate konnte ein Blutverlust von mehr als 5% des Gesamtblutvolumens innerhalb der Einnahmeperiode festgestellt werden. Über die gesamte Meßperiode sind Sickerblutungen bei 5 Personen gefunden worden. Wegen des geringen Ausmaßes (unter 0,2% des Gesamtblutes pro Tag) können sie bei der therapeutischen Anwendung in der Regel außer Betracht bleiben. Die Ergebnisse werden anhand der Literatur diskutiert.
    Notes: Summary Blood loss after administration of acetylsalicylic acid (Aspirin or Colfarit) was investigated in 9 patients. Aspirin/Colfarit (1.5 g/d) was given twice for periods of 14 days within 50 days. With each of the drugs blood loss was less than 5% of total blood volume within the test period. Microhemorrhages were observed in 5 patients. As blood loss is minimal (less than 0.2% of blood volume per day), it may be neglected in clinical use.
    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...