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  • 1980-1984  (2)
  • 1955-1959
  • Angiotensin-Converting Enzyme  (1)
  • Bone marrow culture  (1)
  • 1
    ISSN: 1432-1440
    Keywords: Angiotensin converting enzyme ; Sarcoidosis ; Granulomatous diseases ; Clinical diagnosis ; Angiotensin-Converting Enzyme ; Sarkoidose ; Granulomatosen ; klinische Diagnostik
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 50 Patienten mit Sarkoidose (39 mit aktiver, 11 mit inaktiver Sarkoidose) wurde das Angiotensin-converting enzyme (ACE) im Serum bestimmt. Die Gruppe der Kontrollpatienten umfaßte 50 Personen (34 mit chronischen Lungenerkrankungen, 9 mit Morbus Hodgkin, 7 mit chronischer Polyarthritis). Der Unterschied der Mittelwerte der ACE-Aktivität war zwischen Sarkoidosepatienten (28,6±11,4) und Kontrollpatienten (14,8±4) hochsignifikant (p〈0,001). Ebenso fand sich ein deutlicher Unterschied zwischen Patienten mit aktiver (32,8±11) und inaktiver Sarkoidose (21,9±5,1) mit einemp〈0,001. Corticosteroide senken die ACE-Aktivität bei Sarkoidosepatienten deutlich, ohne daß dies als Hinweis für eine Besserung der Sarkoidose gewertet werden kann. Die gesteigerte ACE-Aktivität bei anderen epitheloidzelligen Granulomatosen (biliäre Zirrhose, Morbus Gaucher, Lepra, Asbestose) repräsentiert möglicherweise einen mit der Sarkoidose gemeinsamen pathophysiologischen Mechanismus.
    Notes: Summary Serum angiotensin-converting enzyme (ACE) was studied in 50 patients with sarcoidosis (39 active, 11 inactive) as well as in 50 control patients (34 with chronic nonspecific lung disease, 9 with Hodgkin and 7 with rheumatoid arthritis). There was a significant difference of ACE activity between sarcoidosis patients (28.6±11.4) and controls (14.8±4), and also between active (32.8±11) and inactive (21.9±5.1) sarcoidosis (p〈0.001). Coricosteroid treatment seems to lower ACE activity in patients with sarcoidosis without offering a clue for clinical improvement. Increased ACE activity in other granulomatous disorders is being discussed. ACE activity thus proves to be a valuable test especially in differentiating active from inactive sarcoidosis.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 44 (1982), S. 329-338 
    ISSN: 1432-0584
    Keywords: Acute myeloid leukemia ; Bone marrow culture ; Cellular aggregates ; Bone marrow stroma ; Adipocytes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We describe the incidence and morphology of cellular aggregates which may develop in 8 day bone marrow (BM) cultures of patients with acute myeloid leukemia (AML). Aggregates formed in at least one BM culture from 50% (20/39) of the AML group. They developed irrespective of the patient's status (i.e. stages M1–M4), FAB type, and presence of colony stimulating factor (CSF). All aggregates were composed of macrophages, plasma cells, and cells of the myelocyte series surrounding a core of adipocytes and collagen fibrils. The percentage of blasts and promyelocytes in the plated BM aspirate governed the final composition of the aggregate. Patients in Stages M3 or M4 with FAB types M1 or M2 formed aggregates with a high proportion of myelocytic cells; aggregates of all other AML patients were composed predominantly of macrophages and plasmacytes. Aggregates appeared to form as a result of attraction of cells in the medium toward the stroma cell core. Furthermore, the development of aggregates in the absence of exogenous CSF, suggested that stromal cells excreted a factor with CSF-like activity. The results indicate that cellular aggregates in AML-BM cultures reflect the important role of BM stroma in creating microenvironments which enhance the development of hemopoietic stem cells.
    Type of Medium: Electronic Resource
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