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2.
Int J Burns Trauma ; 7(4): 34-46, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28804684

RESUMO

INTRODUCTION: Bioresorbable polymers are often used in medical procedures. Since they are biocompatible, this class of materials is a viable alternative for cases in which tissue regeneration is strongly compromised. Bioresorbable synthetic polymers may be used as membranes to support and guide cell growth through the process of tissue repair. OBJECTIVE: To assess the efficiency of a porous bioresorbable membrane Poly (L-co-DL lactic acid)-co-trimethylene carbonate, PL-co-DLA-co-TMC, as a dermal substitute associated with partial skin graft in rats. METHODS: A 1.5×1.5 cm defect was created on the backs of 40 Wistar rats. The rats were divided into a control group, in which the defects were filled with partial skin graft, and a treated group, in which a membrane associated with the graft was implemented. The animals were sacrificed 7 days or 60 days after the procedure and the results were evaluated by macroscopic and microscopic analysis. RESULTS: The polymer was biocompatible and allowed better regeneration of the dermis with less shrinkage, unlike what occurs in second intention healing. Compared to the control group, the treated group showed a thicker and wider dermis with the presence of skin appendages, suggesting partial graft integration and better healing. The skin graft acted as a biological protection of the wound. CONCLUSION: The study material was shown to act as a biocompatible dermal substitute and promoted less scarring of the dermis. Further studies should be conducted to improve the methodology of the surgical procedure.

3.
Biores Open Access ; 2(2): 138-47, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23593566

RESUMO

The inability of the avascular region of the meniscus to regenerate has led to the use of tissue engineering to treat meniscal injuries. The aim of this study was to evaluate the ability of fibrochondrocytes preseeded on PLDLA/PCL-T [poly(L-co-D,L-lactic acid)/poly(caprolactone-triol)] scaffolds to stimulate regeneration of the whole meniscus. Porous PLDLA/PCL-T (90/10) scaffolds were obtained by solvent casting and particulate leaching. Compressive modulus of 9.5±1.0 MPa and maximum stress of 4.7±0.9 MPa were evaluated. Fibrochondrocytes from rabbit menisci were isolated, seeded directly on the scaffolds, and cultured for 21 days. New Zealand rabbits underwent total meniscectomy, after which implants consisting of cell-free scaffolds or cell-seeded scaffolds were introduced into the medial knee meniscus; the negative control group consisted of rabbits that received no implant. Macroscopic and histological evaluations of the neomeniscus were performed 12 and 24 weeks after implantation. The polymer scaffold implants adapted well to surrounding tissues, without apparent rejection, infection, or chronic inflammatory response. Fibrocartilaginous tissue with mature collagen fibers was observed predominantly in implants with seeded scaffolds compared to cell-free implants after 24 weeks. Similar results were not observed in the control group. Articular cartilage was preserved in the polymeric implants and showed higher chondrocyte cell number than the control group. These findings show that the PLDLA/PCL-T 90/10 scaffold has potential for orthopedic applications since this material allowed the formation of fibrocartilaginous tissue, a structure of crucial importance for repairing injuries to joints, including replacement of the meniscus and the protection of articular cartilage from degeneration.

4.
Rev. bras. reumatol ; 51(6): 658-661, dez. 2011. ilus
Artigo em Português | LILACS | ID: lil-624867

RESUMO

A síndrome do anticorpo antifosfolípide (SAF), mais comum em mulheres, manifesta-se clinicamente como trombose e/ou abortamentos de repetição. Anemia hemolítica autoimune e manifestações neurológicas, cardíacas e cutâneas são comuns. Relata-se o caso de um paciente do gênero masculino cuja manifestação inicial da doença foi gangrena em pavilhão auricular, e o diagnóstico de SAF se deu por meio de biópsia de pele do membro inferior, que mostrava vasculopatia trombótica, sem evidência de vasculite. Esse resultado é um dos dois critérios maiores que, associados a um critério menor, fecham o diagnóstico dessa doença. Discutem-se neste caso os possíveis diagnósticos diferenciais e como eles se diferenciam da doença em foco, além da importância que a biópsia teve no diagnóstico de SAF nesse indivíduo.


Antiphospholipid syndrome (APS), more common in females, manifests clinically as thrombosis and/or recurrent fetal loss. Hemolytic autoimmune anemia and neurological, cardiac and cutaneous manifestations are common. This is the case report of a male patient whose first manifestation of the disease was gangrene of the auricle. The diagnosis of APS was established by biopsy of the lower limb skin, which showed thrombotic vasculopathy with no evidence of vasculitis. This is one of the two major criteria, which, along with a minor criterion, establishes the diagnosis of APS. Possible differential diagnoses are discussed. The importance of the biopsy in the APS diagnosis of this male patient is emphasized.


Assuntos
Adulto , Humanos , Masculino , Síndrome Antifosfolipídica/complicações , Pavilhão Auricular/patologia , Síndrome Antifosfolipídica/diagnóstico , Gangrena
5.
Rev Bras Reumatol ; 51(6): 658-61, 2011 Dec.
Artigo em Inglês, Português | MEDLINE | ID: mdl-22124599

RESUMO

Antiphospholipid syndrome (APS), more common in females, manifests clinically as thrombosis and/or recurrent fetal loss. Hemolytic autoimmune anemia and neurological, cardiac and cutaneous manifestations are common. This is the case report of a male patient whose first manifestation of the disease was gangrene of the auricle. The diagnosis of APS was established by biopsy of the lower limb skin, which showed thrombotic vasculopathy with no evidence of vasculitis. This is one of the two major criteria, which, along with a minor criterion, establishes the diagnosis of APS. Possible differential diagnoses are discussed. The importance of the biopsy in the APS diagnosis of this male patient is emphasized.


Assuntos
Síndrome Antifosfolipídica/complicações , Pavilhão Auricular/patologia , Adulto , Síndrome Antifosfolipídica/diagnóstico , Gangrena , Humanos , Masculino
6.
Rev. Soc. Bras. Clín. Méd ; 9(2)mar.-abr. 2011.
Artigo em Português | LILACS | ID: lil-583362

RESUMO

JUSTIFICATIVA E OBJETIVOS: A neurofibromatose tipo 1 é uma doença genética autossômica dominante. Apresenta-se distribuída em diversas regiões do mundo, não possui distinção étnica e acomete igualmente ambos os sexos. O objetivo deste estudo foi relatar um caso de neurofibromatose tipo 1, descrevendo o quadro clínico desta doença. RELATO DO CASO: Paciente do sexo masculino, 60 anos, com diagnóstico de neurofibromatose tipo 1 estabelecido havia 22 anos. Fazia acompanhamento para exérese de nódulos. O paciente referiu uma filha com a mesma doença. CONCLUSÃO: É importante que o clínico saiba reconhecer a doença, para que seja estabelecido o diagnóstico precoce tendo em vista o risco da transformação sarcomatosa. O manuseio do paciente com essa afecção deve ser feito por equipe multidisciplinar familiarizada com a história natural da doença,tendo como objetivo proporcionar a melhor qualidade de vida possível aos seus portadores.


BACKGROUND AND OBJECTIVES: The neurofibromatosis type 1 is an autosomal dominant disorder. It is distributedin many regions of the world, without distinction of ethnic affecting both sexes equally. The objective of this study is toreport a case of neurofibromatosis type 1, describing the clinical course of this disease. CASE REPORT: Male patient, 60-year-old, has been diagnosedwith neurofibromatosis type 1 for 22 years. Exeresis has been performed in order to remove the nodules. The patient reported one daughter with the same disease. CONCLUSION: It is important that clinicians learn to recognize the disease for early diagnosis in view of the risk of sarcomatous transformation. The management of patients with this disease should be done by a multidisciplinary team familiarize with the history of the disease, aiming to provide the best possible quality of life for sufferers.


Assuntos
Humanos , Masculino , Idoso , Neurofibromatose 1/diagnóstico
7.
An Bras Dermatol ; 84(3): 299-301, 2009 Jul.
Artigo em Inglês, Português | MEDLINE | ID: mdl-19668933

RESUMO

A disorder of unknown origin, psoriasis is characterized by erythemato-squamous eruption. Amongst its clinical and morphologic presentations there is acute generalized pustular psoriasis, termed the von Zumbusch variant, accompanied by generalized toxicity. It is often triggered when stopping steroids, in unstable psoriasis patients. Case report of atypical development that began during prednisone use; complete clearing of lesions and symptoms was achieved with 35 days of acitretin.


Assuntos
Acitretina/uso terapêutico , Ceratolíticos/uso terapêutico , Psoríase/tratamento farmacológico , Adulto , Humanos , Masculino , Psoríase/patologia , Resultado do Tratamento
9.
Rev. bras. cir. plást ; 24(2): 249-251, abr.-jun. 2009. ilus
Artigo em Português | LILACS | ID: lil-526927

RESUMO

O dermatofibrossarcoma protuberans (DFSP) é uma neoplasia de tecidos moles de notávelagressividade local, altos índices de recorrência (> 40%) e baixo potencial metastatizante.Ocorre principalmente em tronco e porção proximal de extremidades, sendo incomum emcouro cabeludo, onde perfaz menos de 5% do total de casos. Habitualmente apresenta dimensõesmédias de 5 cm à ocasião da ressecção cirúrgica. O objetivo deste trabalho é relatarcaso de paciente com tumoração gigante em couro cabeludo (20x16x14 cm), enfatizandosuas peculiaridades e discutindo possibilidades terapêuticas.


Dermatofibrosarcoma protuberans (DFSP) is a soft tissue neoplasm with remarkable localaggressiveness, high levels of recurrence (> 40%) and low metastasizing potential. Occurspredominantly in trunk and proximal extremities, being uncommon in scalp, where representsless than 5% of all cases. Usually presents average size of 5 cm at the time of surgicalexcision. The objective of this study is to report a patient with giant tumor of scalp (20x16x14cm), emphasizing its peculiarities and therapeutic options.


Assuntos
Humanos , Masculino , Adulto , Couro Cabeludo/cirurgia , Dermatofibrossarcoma/cirurgia , Neoplasias de Tecido Conjuntivo e de Tecidos Moles , Neoplasias Cutâneas , Transplantes , Métodos , Pacientes , Testes Cutâneos , Procedimentos Cirúrgicos Operatórios
10.
Rev. bras. cancerol ; 37(1/4): 3-6, jan.-dez. 1991. ilus
Artigo em Português | LILACS | ID: lil-157800

RESUMO

O carcinossarcoma uterino é neoplasias rara; apresenta em sua estrutura elementos indiferenciados do estroma endometrial e elementos sarcomatosos hemólogos ao útero. A taxa observada do aparecimento destas lesöes na populaçäo é de 0,8 por 100 mil mulheres. Ocorre com frequência maior entre mulheres que se submeteram à radioterapia, atingindo a taxa de 4.3 por 100 mil muleres nesta populaçäo estudada. A relaçäo entre a radioterapia e o desenvolvimento de carcinossarcoma uterino näo pode se comprovada estatisticamente, dada à raridade da neoplasias, mas provavelmente a radioterapia é um importante fator para o desenvolvimento de tais tumores. Por esta razäo, é fundamental o acompanhamento a longo prazo de mulheres que se submeteram à radioterapia pélvica. Apresentamos o caso de uma paciente tratada do câncer de colo de utero há 14 anos, com radioterapia exclusiva, e que retornou ao serviço qpresentando carciossarcoma uterino.


Assuntos
Humanos , Feminino , Adulto , Radioterapia/efeitos adversos , Tumor Mesodérmico Misto/etiologia , Neoplasias Uterinas/etiologia , Tumor Mesodérmico Misto/patologia , Neoplasias Uterinas/patologia
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