34 resultados para Amputation


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Ciências Biológicas (Biologia Celular e Molecular) - IBRC

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Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Osteosarcoma is the most common primary bone cancer in dogs. It affects most commonly dogs of big or giant breeds with 7 to 8 years and the etiology is unknown. Osteosarcoma is defined as a bone matrix-producing malignant mesenchymal tumor and has a predilection for the metaphyseal region of appendicular skeleton, however, it can affect axial skeleton and soft tissues. Distal radius is the most commonly affected site. The definitive diagnosis of osteosarcoma can be obtained with history, physical examination, radiographs and biopsy. Lung is the most common organ for metastatic disease. The mainly treatment for osteosarcoma is limb amputation and systemic chemotherapy for metastatic disease control. Limb-sparing surgery is a viable alternative to amputation for dogs with concomitant conditions that impede limb amputation. Palliative treatments for osteosarcoma have been studied such as local and systemic radiotherapy, immunotherapy and biphosphonates. This study has the objective of presenting the aspects of diagnosis and treatment for appendicular osteosarcoma

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Photodynamic Therapy (PDT) is a therapeutic method which employs a photosensitizer and light to cause cellular death. The chemical compounds have low or none toxicity for hosts cells. Under the incidence of light, in an appropriated wavelength, these chemical compounds produce reactive oxygen which affects the biomolecules of the target-cells. The specific illumination of the affected area increases the selectivity of the therapy, since the photodynamic process occurs only in the irradiated area. Pythiosis, for instance, is a life-threatening emerging disease caused by a fungus-like organism called Pythium insidiosum. The disease occurs in man and other animals, being mostly observed in horses. Human pythiosis may present as ophthalmic, cutaneous-subcutaneous and systemic forms of lesions. Due to the fact that P. insidiosum is not a true fungus, it is refractory to most antifungal drugs and the treatment of the disease is difficult. Extensive surgery procedures, such as limb amputation, are the treatment of choice, however relapses may occur frequently. Although not totally effective, the use of immunotherapy associated to surgery have shown some results. Considering that pythiosis is an emerging disease few explored in its etiological and therapeutic aspects, which are limited and few effective, it is of great importance to encourage the development of researches for new strategies of treatment. In this sense, it was evaluated the effect of PDT on in vitro growth of the pathogen employing two chemical compounds as photosensitizer, porphyrin and chlorine, at different concentrations in combination with several energetic dosages. Porphyrin showed inhibition of growth at 25mg/mL with 100J/cm2 of energetic dosage and chlorine showed similar results employing low concentrations (0,7, 1,0 and 1,3mg/mL) with 70J/cm2 of energetic dosage... (Complete abstract click electronic access below)

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Osteosarcoma is the primary osseous neoplasia frequently diagnosed in dogs and it’s the main answerable for more than 85% of the neoplasias origened from the skeleton. The average age of onset of the lesion is 7 years, especially in large breeds and giant, with males being more affected than females. In general, 75% of osteosarcomas develop in the appendicular skeleton and 25% in the axial. The forelimbs are more affected than the hindlimbs, since support 60% of body weight. The osteosarcoma diagnosis is made by the analys of the animal’s clinic historic, detailed physique exams, blood exams alkaline phosphatase, xray exams, cytology, biopsy. The treatment of choice is the amputation associated to the chemotherapy. However, in some cases the member is preserved by the allograft technic. The chemotherapy associated to the surgery reduces the total load of the tumor, lengthens the interval of the life and improves the quality of pacient’s life. The most used medicines are cisplatin and doxorubicin. They can be used in separated or associated ways. The prognostic of dogs with osteosarcoma is reserved

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The purpose of this literature review was to describe the main features of phantom eye syndrome in relation to their possible causes, symptoms, treatments, and influence of eye amputation on quality of life of anophthalmic patients. For this, a bibliographical research was performed in Pubmed database using the following terms: eye amputation, eye trauma, phantom eye syndrome, phantom pain, and quality of life, associated or not. Thirteen studies were selected, besides some relevant references contained in the selected manuscripts and other studies hallowed in the literature. Thus, 56 articles were included in this review. The phantom eye syndrome is defined as any sensation reported by the patient with anophthalmia, originated anophthalmic cavity. In phantom eye syndrome, at least one of these three symptoms has to be present: phantom vision, phantom pain, and phantom sensations. This syndrome has a direct influence on the quality of life of the patients, and psychological support is recommended before and after the amputation of the eyeball as well as aid in the treatment of the syndrome. Therefore, it is suggested that, for more effective treatment of phantom eye syndrome, drug therapy should be associated with psychological approach.