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  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 141 (1999), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Oxford BSL : Blackwell Science Ltd
    British journal of dermatology 140 (1999), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 143 (2000), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background Little is known about the role of mechanical trauma in the pathogenesis of malignant melanoma. In individual patients, traumatic events have been discussed as a causative factor for the induction of melanoma and diagnosis of melanoma following trauma may raise medico-legal questions. Objectives To evaluate the relationship between traumatic single or recurrent events and melanoma characteristics. Methods Retrospective questionnaire in 369 melanoma patients. Results A large number of patients (337 of 369; 91·3%) denied an association between a possible traumatic event and melanoma formation. Thirty-two of 369 patients (8·7%) considered an association of trauma and melanoma formation likely. Of these 32 patients, 22 patients (13 men, nine women) reported a single event, and 10 patients (four men, six women) a persisting irritation. An irritation of a pre-existing melanocytic naevus was reported by two patients with histologically confirmed melanoma on acquired or congenital naevus. Conclusions As most of the patients who mentioned a trauma in this study suffered from acral melanoma, or melanoma located on the extremities, a history of trauma should be expected more frequently at these body sites. A review of epidemiological, clinical and scientific research indicates that there seems to be no evidence for single or persistent traumatic events as a causative factor for melanoma formation.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 143 (2000), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background  There are very few data regarding sun exposure behaviour of patients with basal cell carcinoma (BCC) in central Europe.Objectives  A case–control study of patients with sporadic BCC was conducted to assess the risk of occupational and leisure-time sun exposure behaviour, precursor lesions for skin cancer and phenotypic factors on the development of sporadic BCC in Ulm and Dresden, Germany.Methods  A comparison was made of 213 patients with BCC (128 from Ulm, 85 from Dresden; 103 men and 110 women; median age at diagnosis 69 years) and 411 controls (237 from Ulm, 174 from Dresden; 197 men and 214 women; median age 58 years). Crude odds ratios (ORs) and corresponding 95% confidence intervals for all of 64 possible risk factors revealed strong associations in 33 items. Selection of important risk factors was performed in a multiple logistic regression.Results  For sporadic BCC, an increased risk was shown for persons with actinic cheilitis (OR 7·1), actinic keratosis (OR 2·7) and solar lentigo (OR 2·5). The only phenotypic factor indicating risk of sporadic BCC was hair colour, with a higher risk for red/fair than brown/black hair (OR 4·3). There was an increased risk for persons with BCC in first-degree relatives (OR 5·1) and those with sunburn 20 years before sporadic BCC was diagnosed (OR 3·6). Additionally, occupational ultraviolet (UV) exposure appeared to be a risk factor (OR 2·4). In contrast, clinical actinic elastosis showed a protective effect (OR 0·1).Conclusions  In contrast to earlier reports, clinical actinic elastosis turned out to be the only protective factor for sporadic BCC. A special relationship between wrinkling and BCC risk could not be shown. For basic research, future work should be aimed at elucidating further the different forms of collagen repair processes after intermittent and/or chronic UV exposure. The data strongly support the recommendation that a change in recreational UV exposure habits in individuals, and sunburn avoidance in particular, are necessary not only because of the increased long-term risk of melanoma, but also because of the risk of other skin cancers such as sporadic BCC.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 145 (2001), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background A matched case–control study was performed in Munich, Germany, in 1996–97 to evaluate the risk of cutaneous melanoma due to ultraviolet (UV) exposure behaviour in Southern Bavaria, Germany. Objectives Patients with cutaneous melanoma and controls were investigated by two physicians using a standardized questionnaire to identify risk factors for the development of melanoma, such as professional and leisure sun exposure behaviour. In each person, a total body examination was performed to detect benign skin alterations, phenotypic characteristics and precursor lesions for skin cancer. Patients/methods A total of 271 melanoma patients and 271 controls were individually matched for residence, age and gender. A multiple conditional logistic regression analysis was performed. Results Of 56 factors, those risk factors with a strong effect on the development of melanoma were: the existence of melanoma in first degree relatives, solar lentigo, actinic keratosis, actinic cheilitis, skin phototype, immediate skin reaction to UV light at the start of the outdoor season, sunburn in childhood and sun exposure during holidays in sunny areas 20 years before melanoma was diagnosed; outdoor activities in childhood were found to be protective. Conclusions Sunburn in childhood and increased sun exposure during annual holidays in sunny areas should be avoided. In contrast, outdoor activities in childhood, including soccer and gardening, should be encouraged because they are associated with a lower risk of melanoma formation.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Archives of dermatological research 292 (2000), S. 225-232 
    ISSN: 1432-069X
    Schlagwort(e): Key words Melanoma ; Melanoma-metastases ; Bcl-2 ; Bcl-x ; Bax
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Apoptosis is an important cofactor in the pathogenesis of a plethora of malignancies. However, little is known about modulation of the expression of bcl gene family in melanocytic tumors. To determine the role of bcl-2, bcl-x and bax in melanocytic tumors we investigated the differential expression of these genes via RT-PCR in tissue samples from human ¶benign nevi, primary melanomas and melanoma metastases in comparison with normal skin. Bcl-2 was strongly expressed in 14/16 metastases (87.5%), whereas only 7/13 primary melanomas (53%), 7/15 nevi (46%) and 7/16 normal tissue samples (43%) showed expression of bcl-2 (P 〈 0.05). There was a strong indication of a correlation between tumor thickness and bcl-2 expression in nodular malignant melanomas. Expression of bcl-x was found in 16/16 melanoma metastases (100%), 11/13 primary melanomas (84%), 12/15 nevi (80%) and 10/16 normal tissue samples (62%) (P 〈 0.05). Bcl-xL expression increased from primary melanoma to melanoma metastases, whereas bcl-xS showed a decreasing expression level during melanoma progression. No differences in bax expression were seen between melanoma metastases, primary melanoma, nevi and normal tissue. Immunohistochemical investigations of another 53 tissue samples showed similar results. Our results strongly indicate that bcl-2 and bcl-xL gene expression increases with progression of malignant melanoma. Bcl-2 and bcl-xL expression could reflect an increased malignant potential caused by an inhibition of apoptosis and growth advantage for metastatic melanoma cells.
    Materialart: Digitale Medien
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    Der Hautarzt 51 (2000), S. 567-574 
    ISSN: 1432-1173
    Schlagwort(e): Schlüsselwörter Kutanes Strahlensyndrom ; Gamma Interferon ; Tschernobyl ; Georgien ; Goiania-Strahlenunfälle ; Keywords Cutaneous radiation syndrome ; Gamma interferon ; Chernobyl ; Georgia ; Goiania-radiation accidents
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Abstract Accidental exposure to ionizing radiation may occur during such catastrophic events as the Chernobyl accident in 1986 or over days to weeks as in Goiania in 1987 and in the military camp during the training of soldiers in Lilo/Georgia in 1997, as well as in medical institutions. The cutaneous symptoms after radiation exposure are based on a combination of inflammatory processes and alteration of cellular proliferation as a result of a specific pattern of transcriptionally activated proinflammatory cytokines and growth factors. They follow a time course consisting of prodromal erythema, latency period, acute stage, chronic stage and late stage. The entire complex is referred to as cutaneous radiation syndrome. The time course depends on several factors such as the radiation dose, radiation quality, individual radiation sensitivity, the extent of contamination and absorption and amount of skin exposed. For the diagnosis of the cutaneous radiation syndrome the following procedures are used: 7.5 MHz to 20 MHz-B-scan sonography, thermography, capillary microscopy, profilometry, nuclear magnetic resonance imaging, bone scintigraphy and histology. Based on the results of experimental and clinical research, today treatment may include topical or systemic corticosteroids, gamma-interferon, pentoxifylline, vitamin E and superoxide dismutase. The treatment depends on the stage of the cutaneous radiation syndrome. Due to the complexity of the clinical manifestations of radiation disease, most patients require interdisciplinary treatment in specialized centres. Dermatologists are essential partners in the life-long follow-up and therapy of such patients.
    Notizen: Zusammenfassung Die Exposition mit ionisierender Strahlung kann akzidentiell kurzzeitig bei Katastrophen wie dem Reaktorunglück in Tschernobyl 1986 oder auch über Tage und Wochen wie Goiania im Jahre 1987 und wie in einem Militärlager bei der Ausbildung von Soldaten in Lilo/Georgien im Jahre 1997 als auch in medizinischen Behandlungseinrichtungen vorkommen. Die Symptome nach der Strahlenexposition der Haut beruhen auf einer Kombination von inflammatorischen Prozessen und gehemmter Proliferation, die sich als Resultat eines spezifischen Musters transkriptionell aktivierter vor allem proinflammatorischer Zytokine und Wachstumsfaktoren darstellen. Sie unterliegen einem phasenhaften Verlauf: Prodromalerythem, Manifestationsstadium, chronisches Stadium sowie Spätstadium und werden als kutanes Strahlensyndrom bezeichnet. Der Ablauf der einzelnen Phasen ist neben der applizierten Strahlendosis, -qualität und Dosisleistung von verschiedenen anderen Faktoren wie der individuellen Strahlenempfindlichkeit sowie dem Ausmaß von Kontamination und Absorption bzw. exponiertem Volumen des Hautorgans abhängig. Die Diagnostik des kutanen Strahlensyndroms erfordert folgende Verfahren: 7,5- bis 20-MHz-Sonographie, Thermographie, Kapillarmikroskopie, Profilometrie, Kernspintomographie, Skelettszintigraphie sowie die histologische Untersuchung. Basierend auf den Ergebnissen experimenteller und klinischer Forschung der letzten Jahre umfaßt die differente Pharmakotherapie des kutanen Strahlensyndroms heute topisch und systemisch verabreichte Steroide, γ-Interferon, Pentoxyfillin und Vitamin E sowie Superoxiddismutase und ist streng stadienabhängig. Die Komplexität der klinischen Manifestationsformen der Strahlenkrankheit machen meist eine interdisziplinäre Versorgung in spezialisierten Zentren erforderlich. Dermatologen sind in der oft lebenslang notwendigen Therapie und Nachsorge der betroffenen Patienten in besonderer Weise gefordert.
    Materialart: Digitale Medien
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