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  • Schlüsselwörter Bisphosphonate • Skelettmetastasen • Tumorhyperkalziämie  (1)
  • Tumor marker  (1)
  • 1
    ISSN: 1432-1335
    Keywords: Neuron-specific enolase ; Medullary thyroid carcinoma ; Tumor marker ; Calcitonin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neuron-specific enolase (NSE) is an enzyme detectable in nervous and neuroendocrine tissue. Increased serum levels of NSE are found in small cell lung cancer and in patients with neuroblastoma, in whom NSE is used as a serum tumor marker. We have investigated 32 patients with histologically proven medullary thyroid carcinoma, a tumor of neuroendocrine origin, in which the classical tumor marker calcitonin (CT) was pathologically elevated. Positive immunocytochemistry for NSE and CT in C-cells was obtained in all cases. Increased serum NSE levels were found in only 5 of 32 patients, there was no correlation between NSE and CT concentrations. We also compared NSE and CT serum levels during long-term follow-up and again found no correlation between NSE and CT. After i.v. stimulation tests with pentagastrin and calcium, no correlation was found between NSE and CT serum levels. We conclude, therefore, that in medullary thyroid carcinoma NSE is useful for immunocytochemistry but not a reliable serum tumor marker.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Der Orthopäde 27 (1998), S. 231-239 
    ISSN: 1433-0431
    Keywords: Key words Bisphosphonates • Bone metastases • Hypercalcemia of malignancy ; Schlüsselwörter Bisphosphonate • Skelettmetastasen • Tumorhyperkalziämie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bisphosphonate stellen ein neues Therapieprinzip bei der Behandlung von Knochenerkrankungen dar. Sie hemmen die osteoklastäre Knochenresorption und haben sich deshalb bei der Osteoporose, dem Morbus Paget und v. a. bei der Behandlung der Tumorosteopathie bewährt. Insbesondere Pamidronat, Clodronat und Ibandronat sind im Hinblick auf ihre Wirksamkeit bei der Tumorhyperkalziämie und der Tumorosteolyse gut untersucht. Sie stellen die Therapie der Wahl bei der Therapie der hyperkalziämischen Krise dar. Die regelmäßige Anwendung von Bisphosphonaten reduziert das Auftreten skeletaler Komplikationen, wie pathologische Frakturen, Knochenschmerzen oder einer Tumorhyperkalziämie, v. a. beim Mammakarzinom und beim Plasmozytom. Von großem Interesse sind momentan die Untersuchungen zur prophylaktischen Gabe von Bisphosphonaten bei Tumoren mit einem hohen Risiko der Knochenmetastasierung, da erste Ergebnisse eine deutliche Verminderung des Auftretens von Knochenmetastasen beim Mammakarzinom zeigen.
    Notes: Summary Bisphosphonates are a new therapeutic option in the treatment of bone diseases. They inhibit osteoclastic bone resorption and are established in the treatment of osteoporosis, Paget's disease of bone and especially in tumor bone disease. The effects of pamidronate, clodronate and ibandronate in the treatment of hypercalcemia of malignancy and osteolytic bone disease have been extensively studied. These drugs represent the treatment of choice in hypercalcemia of malignancy. The regular application of bisphosphonates reduces skeletal-related events like pathologic fracture, bone pain or hypercalcemia of malignancy, especially in breast cancer and multiple myeloma. Of great interest are the ongoing studies concerning prophylactic application of bisphosphonates in tumors bearing a high risk for bone metastases, especially since the first results suggest a significant reduction in the development of bone metastases in breast cancer patients.
    Type of Medium: Electronic Resource
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