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  • 1995-1999  (2)
  • Bone density measurement  (1)
  • Gerinnungsmarker  (1)
  • 1
    ISSN: 1432-0827
    Keywords: Bone density measurement ; Dual energy X-ray absorptiometry ; Collagen type I ; Biochemical bone markers ; b-quotient
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract In contrast to medical imaging, the biochemical markers allow a more frequent determination and are not as invasive as histomorphometric methods. We investigated biochemical markers of type I collagen compared with bone density measurements in 85 females between 41 and 89 years of age (median: 57 years). The bone density measurements were performed by dual-energy X-ray absorptiometry (DXA) on the lumbar spine (L1–4). The bone density measurements were stated as percentage of the norm. All patients were divided into three groups: I=〈80%; II=80–120%; III=〉120%. Based on this classification the median concentration of the I-carboxyterminal propeptide of type I procollagen in serum (S-PICP) as an anabolic marker of type I collagen increased significantly with rising bone density: I 65.0* μg/liter (interquartile range: 52.1–78.0 μg/liter); II 85.9* μg/liter (52.1–115.5 μg/liter); III 81.4 μg/liter (62.0–101.0 μg/liter); * P〈0.05. The concentration of urinary pyridinolines (U-PYR) as a marker for degradation of type I collagen decreased. The I-carboxyterminal telopeptide (S-ICTP) and osteocalcin (S-BGP) did not change. The multivariate regression analysis showed no relationship between bone density measurement and biochemical bone markers. Only the age significantly correlated negatively with bone density measurement. For a better assessment of type I collagen metabolism we created a “b-quotient” by dividing the sum of S-PICP and S-BGP by U-PYR. The median b-quotient increased significantly: I 1.55*+ (0.97–2.04); II 2.09* (1.57–2.86); III 2.46+ (1.58–3.22);*+ P〈0.05. Changes in bone metabolism cannot be identified by the determination of a single marker. However, the improved biochemical diagnostic measurement using the b-quotient may provide early information about the progression of a metabolic disorder within the interval of imaging.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-1420
    Keywords: Key words Low moleculare weight heparin ; sepsis ; coagulation parameters ; Schlüsselwörter Niedermolekulares Heparin ; Septikämien ; Gerinnungsmarker
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 30 Patienten einer internistischen Intensivstation mit dem Krankheitsbild einer Sepsis und einer beginnenden Verbrauchskoagulopathie wurden über 7 Tage mit dem niedermolekularen Heparin Fragmin behandelt: 15 Patienten erhielten nach randomisierter Gruppenzuteilung niedermolekulares Heparin in einer Dosis von 1,5–5 E pro Kilogramm Körpergewicht/h (Low dose-Gruppe). 15 Patienten der High dose-Gruppe wurden 8–15 E niedermolekularen Heparins pro Kilogramm Körpergewicht/h infundiert. Ein Vergleich der beiden Dosierungsschemata wurde anhand verschiedener Laborparameter durchgeführt, wobei besonders das Prothrombinfragment 1 + 2, das D-Dimer und der Thrombin-Antithrombin III-Komplex berücksichtigt wurden. Bei allen Patienten, die in die Studie aufgenommen wurden, zeigten die drei molekularen Marker bei Therapiebeginn eine Aktivierung des Gerinnung- und Fibrinolysesystems an. Keine Gruppenunterschiede waren zu erheben für die Indikatoren einer Entzündungsreaktion wie Temperatur, Leukozyten-Zahlen, CRP und Elastase. Auch hinsichtlich der (bei allen Patienten eingeschränkten) Nieren- oder Leberfunktion waren die beiden Gruppen gleich. In der High dose-Gruppe stellte sich ein schnellerer und stärkerer Konzentrationsabfall von primär erhöhtem Prothrombinfragment 1 + 2, D-Dimer und Thrombin-Antithrombin III ein. Blutungskomplikationen beobachteten wir in keinem Fall. Nach unseren Ergebnissen ist insbesondere die hochdosierte Therapie mit niedermolekularem Heparin geeignet, die im Rahmen einer Sepsis aktivierte Gerinnung zu inhibieren, ohne Blutungskomplikationen herbeizuführen.
    Notes: Summary Shock secondary to sepsis is a serious common disease with a substantial mortality. Coagulation abnormalities, ranging from a rapid fulminant state of disseminated intravascular coagulation (DIC) to a slight elevation in the level of fibrin(ogen) degradation products, are well recognized in patients with bacterial septicemia. Therefore, the inhibition of the activated coagulation is one of the first therapeutic steps. We investigated 30 intensive care patients with septic disease and comparable signs of abnomalities in coagulation at the beginning. Fifteen patients were treated with 1.5–5 E/kg body weight (Low dose group), the others received 8–15 E/kg (high dose group). Our study demonstrated a significant stronger and faster decline of coagulation parameters – such as d-dimer, TAT and PTF 1 + 2 – in the High dose group without any bleeding disorder. Thus, we support in cases of coagulation disease except fulminant ones the high dose therapy with LMWH as shown above.
    Type of Medium: Electronic Resource
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