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6.
J Dermatol ; 44(11): 1303-1308, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29098727

RESUMEN

We report a case of bilateral annular breast keloids in a 72-year-old woman who had been suffering from bilateral breast cancers. Histopathologically, the keloids showed unique distribution of α-SMA+, CD34- myofibroblasts and α-SMA-, CD34+ fibroblasts depending on the region. High serum levels of tumor growth factor-ß were detected at 6 months after the development of the breast keloids, but not at 10 months. CD163-positive cells were abundantly detected in the skin of the elevated portion of the keloids. In contrast, these cells were considerably less numerous in the skin of the central healing portion compared with the skin of the elevated expanding portion. One interesting idea based on these results is that high levels of tumor growth factor-ß released from CD163-positive cells played a crucial role in the formation of breast keloids through active induction of fibroblast differentiation into myofibroblasts. The present case strongly supports the previously proposed idea that keloids can form as a paraneoplastic phenomenon in breast cancer patients with keloid constitution.


Asunto(s)
Neoplasias de la Mama/complicaciones , Queloide/etiología , Anciano , Femenino , Humanos , Queloide/sangre , Queloide/patología , Linfotoxina-alfa/sangre , Piel/patología
8.
Gan To Kagaku Ryoho ; 44(8): 685-687, 2017 Aug.
Artículo en Japonés | MEDLINE | ID: mdl-28860441

RESUMEN

Thrombocytopenia is often caused by myelosuppression during chemotherapy. However, when platelet transfusions are required, pathological conditions such as idiopathic thrombocytopenic purpura(ITP)and thrombotic thrombocytopenic purpura( TTP)also occur. We report a case of Merkel cell carcinoma complicated with severe thrombocytopenia treated with carboplatin/etoposide regimen after surgery. The patient's platelet count did not increase in spite of platelet transfusions. However, the platelet count increased after steroid treatment was chosen under the diagnosis of ITP. Subsequent examinations revealed that the patient had HLA antibody, which caused the platelet transfusion refractoriness. When the platelet count does not increase in spite of platelet transfusions during chemotherapy, the possibility that the platelet transfusion refractoriness is due to the presence of HLA antibody should be considered.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Carboplatino/efectos adversos , Carcinoma de Células de Merkel/tratamiento farmacológico , Etopósido/efectos adversos , Neoplasias Cutáneas/tratamiento farmacológico , Trombocitopenia/terapia , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carboplatino/administración & dosificación , Carcinoma de Células de Merkel/cirugía , Etopósido/administración & dosificación , Femenino , Antígenos HLA/inmunología , Humanos , Transfusión de Plaquetas , Neoplasias Cutáneas/patología , Neoplasias Cutáneas/cirugía , Trombocitopenia/inducido químicamente
12.
J Dermatol ; 44(7): 813-817, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28266042

RESUMEN

Solitary venous malformation (VM) of the skin, previously known as cavernous hemangioma, is frequently observed in the dermatological field, but multiple acquired VM are rare. We present a case of multiple VM of the skin associated with multiple cerebral cavernous malformations (CCM) in a 70-year-old Japanese woman. In addition, we summarize seven reported similar cases, including the present case. That some reports have described concomitant VM of the skin and CCM, together with the present case, suggests a tight relationship or a common pathogenetic pathway between these two diseases.


Asunto(s)
Neoplasias Encefálicas/diagnóstico , Hemangioma Cavernoso del Sistema Nervioso Central/diagnóstico , Enfermedades Raras/diagnóstico , Neoplasias Cutáneas/diagnóstico , Anciano , Encéfalo/diagnóstico por imagen , Neoplasias Encefálicas/complicaciones , Neoplasias Encefálicas/etiología , Neoplasias Encefálicas/patología , Procedimientos Quirúrgicos Dermatologicos , Femenino , Hemangioma Cavernoso del Sistema Nervioso Central/complicaciones , Hemangioma Cavernoso del Sistema Nervioso Central/etiología , Hemangioma Cavernoso del Sistema Nervioso Central/patología , Humanos , Hipoestesia/etiología , Imagen por Resonancia Magnética , Dolor/etiología , Enfermedades Raras/complicaciones , Enfermedades Raras/etiología , Enfermedades Raras/patología , Piel/diagnóstico por imagen , Piel/patología , Neoplasias Cutáneas/etiología , Neoplasias Cutáneas/patología , Neoplasias Cutáneas/cirugía , Tejido Subcutáneo/anomalías , Tejido Subcutáneo/patología , Tejido Subcutáneo/cirugía , Tomografía Computarizada por Rayos X , Torso/diagnóstico por imagen , Torso/patología , Torso/cirugía , Extremidad Superior/diagnóstico por imagen , Extremidad Superior/patología , Extremidad Superior/cirugía
13.
J Dermatol ; 44(8): 954-958, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28295566

RESUMEN

Concomitant confluent and reticulated papillomatosis (CRP) and acanthosis nigricans (AN) is rare. We present a case of concomitant CRP and obesity-associated AN in a 12-year-old obese Japanese girl. Curiously, oral minocycline therapy, which has been shown to be effective for CRP, was effective against both CRP and AN. Possible mechanisms by which minocycline could have improved skin lesions of CRP and obesity-associated AN are discussed. In addition, reports of concomitant CRP and obesity-associated AN are reviewed. CRP and obesity-associated AN share common clinicopathological features and some reports have described concomitant CRP and obesity-associated AN. Together with the observation that skin lesions of CRP and obesity-associated AN in the present case responded to oral minocycline therapy, these facts suggest a tight relationship or a common pathogenetic pathway between these pathologies.


Asunto(s)
Acantosis Nigricans/tratamiento farmacológico , Resistencia a la Insulina , Obesidad/tratamiento farmacológico , Papiloma/tratamiento farmacológico , Enfermedades Raras/tratamiento farmacológico , Neoplasias Cutáneas/tratamiento farmacológico , Acantosis Nigricans/sangre , Acantosis Nigricans/complicaciones , Fosfatasa Alcalina/sangre , Antibacterianos/uso terapéutico , Biopsia , Glucemia/análisis , Péptido C/sangre , Niño , Femenino , Humanos , Minociclina/uso terapéutico , Obesidad/sangre , Obesidad/complicaciones , Papiloma/sangre , Papiloma/patología , Enfermedades Raras/sangre , Enfermedades Raras/complicaciones , Enfermedades Raras/patología , Piel/patología , Neoplasias Cutáneas/sangre , Neoplasias Cutáneas/patología , Síndrome , Resultado del Tratamiento
20.
Genes Cells ; 21(2): 185-99, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26791143

RESUMEN

Ultraviolet (UV) B is a major factor in melanomagenesis. This fact is linked to the resistance of melanocytes to UVB-induced apoptosis. In this study, we characterized the involvement of Mcl-1L in the regulation of UVB-induced apoptosis in melanocytes and in melanoma cells. In melanocytes, apoptosis was not evident at 24 h after UVB irradiation. The Mcl-1L expression increased after UVB irradiation, and the high Mcl-1L expression continued for at least 24 h. This UVB-dependent increase in Mcl-1L was mediated by the MEK-ERK-pS-STAT3 (STAT3 phosphorylated at Ser727) pathway. The Ser727 phosphorylation facilitated nuclear localization of STAT3. In melanoma cells, the expression levels of Mcl-1L varied depending on the cell line. WM39 melanoma cells expressed high levels of Mcl-1L via the MEK-ERK-pS-STAT3 pathway and were resistant to UVB-induced apoptosis without up-regulation of Mcl-1L. In melanocytes and in WM39 cells, transfection with Mcl-1 siRNA promoted UVB-induced apoptosis. Immunohistochemical studies showed that melanoma cells in in situ lesions expressed high amounts of Mcl-1L. These results indicate that the high expression of Mcl-1L mediated by the MEK-ERK-pS-STAT3 pathway protects melanocytes and melanoma cells from UVB-induced apoptosis.


Asunto(s)
Sistema de Señalización de MAP Quinasas , Melanocitos/citología , Melanoma/metabolismo , Proteína 1 de la Secuencia de Leucemia de Células Mieloides/metabolismo , Rayos Ultravioleta/efectos adversos , Apoptosis , Línea Celular Tumoral , Núcleo Celular/metabolismo , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Humanos , Melanocitos/metabolismo , Melanoma/genética , Proteína 1 de la Secuencia de Leucemia de Células Mieloides/genética , Metástasis de la Neoplasia , Fosforilación/efectos de los fármacos , Factor de Transcripción STAT3/metabolismo , Regulación hacia Arriba
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