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1.
J Eur Acad Dermatol Venereol ; 24(8): 867-74, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20113382

RESUMO

In 1945, Martorell described ischaemic leg ulcers in patients with hypertension. He suggested that the ischaemic necrosis was secondary to a hypertensive arteriolar disease and referred to them as 'hypertensive ischaemic ulcers'. In recent years, the specific entity of these ulcers has been questioned. Others claim they have a much higher incidence, but presume the diagnosis is frequently missed. Almost 900 cases of Martorell's ulcers have been reported in literature since the first description. A systematic review and comprehensive search of literature (evidence-based) was needed to characterize this type of ulcer. Based on aetiology and histopathology, it seems to be justified to maintain the name 'arteriolosclerotic ulcer of Martorell'. We conclude that the arteriolosclerotic ulcer of Martorell is a specific entity with its own clinical and histological diagnostic keys, wound management and preventive measures. We introduce a set of criteria that may be used to facilitate diagnosing arteriolosclerotic ulcer of Martorell as well as a flowchart that includes diagnosis, treatment and prevention of this particular type of vascular leg ulcer.


Assuntos
Hipertensão/complicações , Úlcera da Perna/etiologia , Doença Arterial Periférica/complicações , Arteríolas/patologia , Aterosclerose/diagnóstico , Aterosclerose/etiologia , Aterosclerose/terapia , Diagnóstico Diferencial , Humanos , Úlcera da Perna/diagnóstico , Úlcera da Perna/terapia , Doença Arterial Periférica/patologia
2.
Arch Dermatol Res ; 295(3): 117-23, 2003 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-12756587

RESUMO

Although the therapeutic role of ajoene, an organosulfur compound of garlic, in cardiovascular diseases and mycology has been established, its usefulness in cancer treatment has only recently been suggested. We applied ajoene topically to the tumors of 21 patients with either nodular or superficial basal cell carcinoma (BCC). A reduction in tumor size was seen in 17 patients. Immunohistochemical assays for Bcl-2 expression in a selection of these tumors before and after treatment showed a significant decrease in this apoptosis-suppressing protein. On average, the percentage of tumor cells expressing the proliferation marker Ki-67 was not decreased, which suggests that the action of ajoene is not explained by a cytostatic effect. To obtain further insight into the mode of action of ajoene, the BCC cell line TE354T and a short-term primary culture of BCC were analyzed for apoptosis induction after treatment with the drug. Apoptosis was detected by morphology of the cells and by flow cytometry. Ajoene induced apoptosis in a dose- and time-dependent manner in these cultures. Taking together the results of the in vivo and in vitro studies, we conclude that ajoene can reduce BCC tumor size, mainly by inducing the mitochondria-dependent route of apoptosis.


Assuntos
Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Carcinoma Basocelular/patologia , Carcinoma Basocelular/fisiopatologia , Dissulfetos/farmacologia , Alho/química , Extratos Vegetais/farmacologia , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/fisiopatologia , Idoso , Idoso de 80 Anos ou mais , Carcinoma Basocelular/metabolismo , Feminino , Humanos , Antígeno Ki-67/metabolismo , Masculino , Pessoa de Meia-Idade , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , Neoplasias Cutâneas/metabolismo , Sulfóxidos
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