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  • Hypertrophic pulmonary osteoarthropathy  (1)
  • Key words: Inflammation mediators — ECP — MPO — Acute asthma — Steroid reduction  (1)
  • 1
    ISSN: 1420-908X
    Keywords: Key words: Inflammation mediators — ECP — MPO — Acute asthma — Steroid reduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Objective and Design: The main objective was to establish the level of serum ECP in a group of adult asthmatic patients with acute exacerbation and the following resolution and in another group of adult, stable asthmatic patients during reduction of inhaled steroids.¶Subjects and Treatment: Acute group: Twenty-one asthmatic patients admitted to the asthma clinic with acute deterioration of their asthma were set on oral steroids which were reduced to 0 within one week. Reduction group: Forty-four stable asthmatic patients on maintenance inhaled steroids were included and, on the basis of their peak expiratory flow (PEF) values, adjustments in the doses of steroids were made. Control group: Twenty stable asthmatics on a constant dose of inhaled steroids were enrolled as controls.¶Methods: All patients registered daily PEF measurements and spirometry was performed at each visit. Blood samples were drawn and analysed for eosinophil cationic protein (ECP), myeloperoxidase (MPO), eosinophils and neutrophils.¶Results: ECP was low and within the normal range for all three groups at study entry. (Acute group = 8.4 μg/l, reduction group = 3.7 μg/l and control group = 4.6 μg/l). Nevertheless, the value in the acute group was significantly higher than in the control group (p = 0.005). The levels in the acute group decreased significantly (p = 0.004) after one week on oral steroids. No significant changes in ECP were observed in the reduction group or in the control group during the follow-up period. The lung function was low in the acute group at inclusion, forced expiratory volume in one second (FEV1) = 47.1% of predicted, and increased significantly during the treatment period (p = 0.006). The patients in the reduction- and control group showed small variations in lung function during the whole study, FEV1 〉70% and PEF 〉 80% of predicted, respectively. No correlation between atopy and ECP was found in the patients irrespective of the stage of disease.¶Conclusions: This study suggests that the resolution of acute asthma exacerbations during treatment could be followed using ECP determinations. In stable asthmatics on inhaled steroids and with normal ECP levels, a dose reduction could be indicated. A longer period after tapering off steroids is proposed to confirm the benefit of ECP measurements for controlling asthma.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 49 (1971), S. 739-747 
    ISSN: 1432-1440
    Keywords: Hypertrophic pulmonary osteoarthropathy ; venous admixture ; Bradykinine ; Hypertrophe pulmonale Osteoarthropathie ; venöse Beimischung ; Bradykinin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei insgesamt 34 Patienten mit Uhrglasnägeln und Trommelschlegelfingern wurden Spirometrie sowie blutgasanalytische Untersuchungen bei Luft- und reiner O2-Atmung durchgeführt. Aus den gemessenen Daten wurden die alveolar-arterielle O2-Druckdifferenz mit ihren Teilkomponenten (Beimischungsgradient, Diffusions-Belüftungsgradient) sowie die Zumischung venösen Blutes zum arteriellen Blut berechnet. Gegenüber dem Normalkollektiv werden folgende statistisch signifikante Unterschiede festgestellt: 1. Periphere arterielle Hypoxämie. 2. Die AaDO2 ist bei Luft- und reiner O2-Atmung erhöht. 3. Die Beimischung venösen Blutes zum arteriellen Blut ist erhöht. 4. Der Anteil, um den die AaDO2 bei Luftatmung erhöht ist, wird ausschließlich durch den Beimischungsgradienten bedingt. 5. Spirometrisch besteht eine restriktive Ventilationsstörung mit Atemstimulation. Auf Grund der Ergebnisse wird gefolgert, daß die erhöhte venöse Beimischung Voraussetzung für die Entstehung von Fingerveränderungen im Sinne einer hypertrophen pulmonalen Osteoarthropathie ist. Die Entstehung der HPO wird mit der Wirkung einer vasoaktiven Substanz (Bradykinin) erklärt, die normalerweise in der Lunge inaktiviert wird. Der humorale Entstehungsmechanismus der HPO ist bis heute für die Vielfalt der Erkrankungen, die diese Symptomentrias aufweisen können, der einzige befriedigende Erklärungsversuch.
    Notes: Summary In 34 patients with “Uhrglasnägel” (watch glass nails) and clubbed fingers spirometry and blood gas studies were carried out under room-air and O2-breathing. Alveolar-arterial O2-difference with its components and venous admixture were calculated. In comparison to a group of normal subjects the following statistically significant differences were found: 1. peripheral arterial hypoxemia 2. increased AaDO2 under room-air and O2-breathing 3. increased venous admixture 4. the increased AaDO2 during room-air-breathing is completely explained by venous admixture 5. There is a restriction in total-lung-capacity and breathing-stimulation. It is postulated that the increased venous admixture is necessary for the development of hypertrophic pulmonary osteoarthropathy (HPO). The results favour the humoral theory. The discussed vasoactive substance probably is Bradykinin. To date this theory is the only sufficient explanation for the development of HPO in various underlying diseases.
    Type of Medium: Electronic Resource
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