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  • 1995-1999  (6)
  • 1990-1994  (4)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 112 (1990), S. 5375-5376 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 21 (1994), S. 0 
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. The haemodynamic effects of intravenous nitric oxide inhibitor, N-nitro-L-arginine (NOLA), were examined in four conscious non-restrained baboons (Papio hamadryas). Mean arterial pressure, (MAP), systemic vascular resistance (SVR) and cardiac output (CO) were measured at timed intervals up to 24 h after a bolus injection of NOLA.2. N-nitro-L-arginine increased blood pressure in a dose-dependent manner up to 9.5mg/kg. Increases in blood pressure were accompanied by increases in SVR and decreases in CO, with a significant fall in heart rate.3. One animal received 9.5 mg/kg NOLA and became unconscious, suggesting cerebral vasospasm.4. Vascular effects of nitric oxide contribute significantly to the regulation of arterial blood pressure under physiological conditions in the baboon.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les caractéristiques cliniques et histologiques de 13 cas de mélanome malin chez des enfants âgés de moins de 13 ans dans la région de New South Wales, Australie, ont été comparées à celles d'un groupe contrôle de 15 naevi de Spitz, dont quatre atypiques et deux de composante naevocellulaire. Six de ces lésions avaient été classées auparavant comme malignes. Les observations objectives effectuées par un ou plusieurs anatomopathologistes, expérimentés dans les lésions mélanocytiques, et les faits cliniques, recueillis à partir des dossiers de l'Unité de Soins pour Mélanome de Sydney, ont été entrées dans un protocole d'analyse détaillé. L'analyse a été effectuée avec un logiciel SPSS-X sur un ordinateur VAS. Six des 13 enfants atteints de mélanome sont morts. Les caractéristiques les plus fréquemment retrouvées étaient l'hémorragie, l'ulcération, le prurit et la couleur noire ou versicolore. Une histoire récente d'élargissement ou d'intensification de la couleur a été notée dans la majorité des mélanomes malins et des naevi de Spitz. Dans cette série, les critères de malignité ont associé des mitoses à moins de 0.25 mm de la marge dermique du mélanome, une fréquence de mitoses supérieure à 2/mm2 de derme, la présence d'ulcération, d'un exsudat de surface, de granules pigmentés larges et une différenciation de cellules claires. L'épaisseur médiane des mélanomes malins était de 1.3 mm mais, chez quatre des six enfants qui sont morts, l'épaisseur médiane était de 2.9 mm. En faveur d'un naevi de Spitz, on retenait l'absence de mitose, la prédominance de cellules fusiformes et une maturation diffuse. L'épaisseur médiane des naevi de Spitz était de 0.7 mm.
    Abstract: Resumen Se compararon las características clínicas e histológicas de 13 melanomas malignos en niños menores de 13 años en New South Wales, Australia, con un grupo control de 15 nevus de Spitz, 4 de los cuales fueron considerados atípicos, y 2 raros nevus compuestos novocelulares. Seis de los controles habían sido histológicamente diagnosticados previamente como melanoma maligno. Las observaciones objetivas realizadas por uno o mas histopatólogos expertos en reportar lesiones melanocíticas, junto con la información clínica, principalmente emanados de los archivos de la Unidad de Melanoma de Sydney, fueron ingresados a un minucioso protocolo, y la evolución fue analizada con ayuda de computación (SPSS-X Software y computador mainframe VAX). Seis de los 13 niños con melanoma maligno murieron por causa de la enfermedad. Los signos clínicos hallados con mayor frecuencia fueron el sangrado, la ulceración, el prurito y el color negro o jaspeado. Se observó aumento del tamaño y oscurecimiento reciente de la lesión en la mayoría de los melanomas malignos y de los nevus de Spitz. Las características histológicas que favorecieron el diagnóstico de melanoma en esta serie fueron las mitosis dentro de un margen de 0.25 mm del melanoma dérmico, una tasa de mitosis dérmica superior a 2/mm2, ulceración, exudado de superfice, gránulos pigmentados grandes y diferenciación de células claras. El espesor promedio de los melanomas malignos fue 1.3 mm, pero en los 4 niños que murieron por causa del melanoma el espesor promedio fue 2.9 mm. La ausencia de mitosis, el predominio de células fusiformes y la maduración difusa fueron hallazgos que favorecieron el diagnóstico de nevus de Spitz; el espesor promedio de los nevus de Spitz fue 0.7 mm.
    Notes: Abstract The clinical and histological features of 13 malignant melanomas in children 〈13 years of age in New South Wales, Australia, were compared with those in a control group of children with 15 Spitz nevi, 4 of which were considered atypical, and 2 unusual compound nevocellular nevi. Six of the controls had been previously diagnosed histologically as malignant melanoma. The objective observations made by one or more histopathologists experienced in reporting melanocytic lesions, and the clinical details, mainly from the Sydney Melanoma Unit files, were entered on a detailed protocol. Evaluation was assisted by the use of SPSS-X software on a mainframe VAX computer. Six of the 13 children with malignant melanoma died with their disease. The most frequent clinical features found in the malignant melanomas were bleeding, ulceration, itching, and black or variegated color. Recent enlargement and darkening were noted in the majority of both the malignant melanomas and the Spitz nevi. Histological features favoring malignancy in this series were mitoses within 0.25 mm of the dermal margin of the melanoma, a dermal mitotic rate exceeding 2/mm2, ulceration, surface exudate, large pigment granules, and clear-cell differentiation. The median thickness of the malignant melanomas was 1.3 mm but in the 4 children who died with melanoma the median thickness was 2.9 mm. Absence of mitoses, predominance of spindle cells, and diffuse maturation favored Spitz nevus. The median thickness of the Spitz nevi was 0.7 mm.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 378 (1995), S. 434-434 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR — A recent news item in Nature1 reported that experts regard xenotrans-plantation as a new medical field with explosive growth potential. They foresee a future in which animals would routinely provide bone marrow, hearts, lungs and kidneys for humans, and estimate that 50,000 pig ...
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Chez les patients atteints de mélanome évolué ou récidivant localisé aux membres, la perfusion sur membre isolé hyperthermique de Melphalan entraîne une rémission complète dans 35 à 40% des cas et une rémission partielle dans 35 à 40% des autres cas. Des études préliminaires ont suggéré que le cisplatin administré sur membre hyperthermique isolé était non seulement plus efficace mais aussi moins toxique que le melphalan. Une étude a donc été entreprise pour évaluer d'avantage l'efficacité des perfusions, sur membre isolé hyperthermique, de cisplatin dans le traitement des mélanomes des membres. Dix patients ont été traités. Le procédé n'a pas réussi à éradiquer le mélanome des membres chez 5 des 6 patients qui étaient traités pour une récidive de la maladie et une rechute est survenue ches 2 des 4 patients traités de façon préventive. La toxicité au niveau des membres perfusés était élevée de façon inacceptable. Deux des 10 patients ont eu des réactions sévères, un a nécessité une amputation. Il faut déduire des résultats de cette étude et à partir des données de la littérature que jusque là par perfusion sur membres isolés hyperthermiques, ni le cisplatin, ni aucune autre drogue utilisée seule ou en combinaison, n'ont démontré une efficacité clairement supérieure à celle du melphalan. Des études sont en cours, testant des protocoles de double perfusion, des stratégies nouvelles utilisant l'hyperthermie locorégionale et la perfusion sur membre isolé de modificateur de la résponse biologique comme le facteur de nécrose tumorale et l'interféron. Toutefois, à l'heure actuelle, la perfusion sur membre hyperthermique isolé de melphalan reste le traitement qui semble le plus efficace pour l'éradication ou le contrôle d'un mélanome évolué ou récidivant des membres.
    Abstract: Resumen En pacientes con melanoma avanzado o recurrente confinado a una extremidad, la perfusióon hipertérmica aislada del miembro (PHAM) con melfalán resulta en remisión completa en 35–40% de los casos y remisión parcial en 35–40%. Usualmente se registra toxicidad leve o moderada por parte del miembro perfundido, aunque en ocasiones se ven reacciones severas. Con base en reportes preliminares que sugerían que el cisplatino administrado por perfusión aislada era aún más efectivo que el melfalán y menos tóxico, se emprendió un estudio para valorar el uso de la PHAM con cisplatino en el manejo de melanomas de la extremidad. Diez pacientes fueron tratados. El procedimiento falló en cuanto a eliminar el melanoma de la extremidad en 5 de 6 pacientes que recibieron PHAM terapéutica para enfermedad recurrente, y se observó recurrencia en 2 de 4 pacientes que recibieron PHAM profiláctica. La toxicidad en el miembro perfundido fue inaceptablemente alta, con 2 de 10 pacientes con reacciones severas, uno de los cuales requirió amputacion. La conclusión, después de este estudio y con base en una revisión de la literatura, es que ni el cisplatino ni ninguna otra droga o combinación de drogas hasta ahora utilizadas para perfusión aislada logra resultados claramente superiores a los obtenidos con melfalán. Actualmente hay estudios en progreso destinados a investigar protocolos de doble perfusión, nuevas estrategias con hipertermia regional y la administración por vía de perfusión aislada de agentes capaces de modificar la respuesta biológica, tales como el factor necrotizante tumoral y el interferón. Sin embargo, hasta la fecha, la PHAM con melfalán sigue siendo el tratamiento que con mayor probabilidad resulta exitoso en cuanto a eliminar o controlar un melanoma o recurrente de una extremidad.
    Notes: Abstract In patients with advanced or recurrent melanoma confined to a limb, hyperthermic isolated limb perfusion (ILP) with melphalan produces complete remission in 35–40% of cases and partial remission in a further 35–40%. Mild or moderate limb toxicity is usual, but severe toxic reactions in the limb sometimes occur. After preliminary reports suggested that cisplatin administered by ILP was even more effective than melphalan yet less toxic, a study was undertaken to further assess the value of hyperthermic ILP with cisplatin in the management of limb melanoma. Ten patients were treated. The procedure failed to eliminate melanoma in the limb in 5 of the 6 who received therapeutic ILPs for recurrent disease, and recurrence developed in 2 of the 4 patients who received prophylactic ILPs. Toxicity in the perfused limbs was unacceptably high, with 2 of the 10 patients having severe reactions, one necessitating amputation. We conclude from the results of this study and from a review of literature that neither cisplatin nor any other drug or drug combination so far used for ILP in melanoma patients achieves results which are clearly superior to those achieved with melphalan. Studies are currently in progress investigating double perfusion protocols, new strategies with regional hyperthermia, and the administration by ILP of biological response modifiers such as tumor necrosis factor and interferon. However, for the present, hyperthermic ILP with melphalan remains the treatment most likely to be successful in eliminating or controlling advanced or recurrent melanoma in a limb.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Annals of surgical oncology 5 (1998), S. 248-252 
    ISSN: 1534-4681
    Keywords: Epitrochlear ; Lymph node ; Lymphoscintigraphy ; Metastasis ; Melanoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The incidence of epitrochlear lymph node metastasis for patients with melanomas on the hand or forearm is disputed, and management guidelines for these nodes are unclear. Methods: The records of 13,139 consecutive melanoma patients were reviewed to document the incidence of metastatic disease in epitrochlear nodes. The frequency of direct lymphatic drainage to epitrochlear nodes was determined for 109 patients with melanomas of the distal upper limb who had undergone preoperative lymphoscintigraphy. Results: Nine of 801 patients (1.1%) with upper limb primary melanomas developed metastatic disease in an epitrochlear node, and one other patient with an occult primary tumor did so. Six of these ten patients underwent elective axillary node dissection at the time of surgery for epitrochlear node disease, and three were found to have metastatic disease in an axillary node. Epitrochlear node metastasis occurred in only two of 83 (2.4%) patients with upper extremity melanoma who underwent therapeutic axillary dissection. Of the 109 patients who underwent lymphoscintigraphy, four (3.7%) demonstrated lymphatic drainage to an epitrochlear node. Conclusions: Epitrochlear nodal involvement from melanoma of the distal upper extremity is rare, and routine epitrochlear node clearance at the time of either elective or therapeutic axillary dissection for upper extremity melanoma is not indicated. However, it is desirable to perform an axillary dissection whenever surgery for metastatic disease in an epitrochlear node is performed.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Annals of surgical oncology 6 (1999), S. 811-811 
    ISSN: 1534-4681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1534-4681
    Keywords: Lymphoscintigraphy ; Retroperitoneal ; Paravertebral ; Sentinel lymph nodes ; Melanoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Preoperative lymphoscintigraphy (LS) with99mTc antimony sulphide colloid is now part of the routine management of patients with intermediate thickness melanoma at the Sydney Melanoma Unit. Over a 13-year period, 1375 patients have been examined using LS, and we have observed many unusual lymphatic drainage pathways, including direct drainage through the body wall to retroperitoneal and paravertebral lymph nodes from the skin of the back. The aim of this study was to determine the incidence of such drainage in the 542 patients who had primary melanoma sites on the posterior trunk. Methods: The lymphoscintigrams performed on these patients were examined for the presence of direct lymphatic drainage through the posterior body wall to sentinel nodes in the retroperitoneal and paravertebral regions. Results: Lymphatic drainage directly through the body wall to such lymph nodes occurred in 14 of these 542 patients. Conclusions: Preoperative knowledge of the presence of this lymph drainage pattern may influence surgical management, and follow-up investigations in these patients can be tailored to ensure that the relevant areas are examined with anatomic imaging or F18-FDG PET scans.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Annals of surgical oncology 4 (1997), S. 279-280 
    ISSN: 1534-4681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1534-4681
    Keywords: Lymphoscintigraphy ; Melanoma ; Sentinel nodes ; Second-tier lymph nodes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Preoperative cutaneous lymphoscintigraphy (LS) to identify sentinel (first-tier) lymph nodes was performed in 250 consecutive melanoma patients before wide local excision only or wide local excision with sentinel node biopsy. Methods: The location of the sentinel nodes was marked on the overlying skin in all patients. Whether or not tracer was present in second-tier lymph nodes on the delayed scans was recorded for each patient and related to the lesion site at which the tracer had initially been injected. For 100 consecutive patients the rate of tracer movement through the lymphatic channels was compared to the incidence of second-tier drainage. Results: Second-tier nodes were visualized in all patients with melanomas on the leg and thigh, and in almost all patients with melanomas on the forearm and hand, but were seen less often in patients with more centrally located melanomas. There was a significant correlation between the rate of lymph flow and the incidence of demonstrable second-tier drainage. Conclusion: The results suggest that the physiology of the lymphatic system varies depending on the origin of the lymphatic vessel. These findings have important implications for application of the sentinel node biopsy technique in individual patients.
    Type of Medium: Electronic Resource
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