408 resultados para Leprosy, Multibacillary
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Diagnostic imaging techniques play an important role in assessing the exact location, cause, and extent of a nerve lesion, thus allowing clinicians to diagnose and manage more effectively a variety of pathological conditions, such as entrapment syndromes, traumatic injuries, and space-occupying lesions. Ultrasound and nuclear magnetic resonance imaging are becoming useful methods for this purpose, but they still lack spatial resolution. In this regard, recent phase contrast x-ray imaging experiments of peripheral nerve allowed the visualization of each nerve fiber surrounded by its myelin sheath as clearly as optical microscopy. In the present study, we attempted to produce high-resolution x-ray phase contrast images of a human sciatic nerve by using synchrotron radiation propagation-based imaging. The images showed high contrast and high spatial resolution, allowing clear identification of each fascicle structure and surrounding connective tissue. The outstanding result is the detection of such structures by phase contrast x-ray tomography of a thick human sciatic nerve section. This may further enable the identification of diverse pathological patterns, such as Wallerian degeneration, hypertrophic neuropathy, inflammatory infiltration, leprosy neuropathy and amyloid deposits. To the best of our knowledge, this is the first successful phase contrast x-ray imaging experiment of a human peripheral nerve sample. Our long-term goal is to develop peripheral nerve imaging methods that could supersede biopsy procedures.
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Universidade Estadual de Campinas . Faculdade de Educação Física
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Universidade Estadual de Campinas . Faculdade de Educação Física
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Universidade Estadual de Campinas . Faculdade de Educação Física
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INTRODUÇÃO: A tuberculose na República da Guiné-Bissau não apresenta bons indicadores de saúde, assim como na maioria dos países em vias de desenvolvimento. OBJETIVO: Estudar na República da Guiné-Bissau e nas suas Províncias, a situação epidemiológica da doença no período de 2000 a 2005. MÉTODO: Realizou-se levantamento de dados secundários junto ao Programa Nacional de Luta Contra Lepra e Tuberculose, no período de 2000 a 2005, e análise de relatórios anuais da Capital e das Províncias da Guiné-Bissau, para o cálculo de coeficientes e taxas dos indicadores. RESULTADOS: O número de casos de tuberculose manteve-se estável no período de 2000 (1.959 casos) a 2005 (1.888 casos). O percentual de casos pulmonares variou de 96,0 a 98,8%, dos quais 55% eram bacilíferos. Em 2005 o coeficiente de prevalência foi de 142,4/100.000, o de incidência 131,3/100.000 e o de mortalidade, 16,8/100.000 habitantes. A maior concentração de casos ocorreu na região da Capital. A taxa de cura variou entre 46,5% em 2000 e 69,6% em 2005, e a de abandono de tratamento de 29,8% em 2000 para 12,1% em 2005. CONCLUSÃO: Os indicadores do Plano Estratégico Nacional devem ser melhorados, sobretudo no que diz respeito à busca ativa de casos, à descentralização do atendimento aos doentes, à implantação da estratégia DOTS e à necessidade de um sistema de informação e notificação eficientes.
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Para controle da hanseníase, doença infectocontagiosa conhecida desde os tempos bíblicos, são mostradas as intrincadas convergências de histórias nacionais, de políticas médicas, governamentais e internacionais. O estudo descreve a história e as ações de controle da hanseníase, a partir do começo do século XIX, no estado de São Paulo, e sua conexão com o desenvolvimento da saúde pública, utilizando análises bibliográficas e documentais.
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Caracterizar a limitação funcional, de atividade, consciência de risco, e restrição à participação social em pessoas atingidas pela hanseníase no pós-alta. Estudo seccional-descritivo com 69 residentes em Sobral, Ceará, com alta entre 2003 a 2005. Foram realizados exame físico dermato-neurológico, avaliação demográfica, de limitação funcional-atividade-consciência de risco e de restrição à participação social. Vinte (28,9%) apresentaram escores SALSA 19 e 20 e escore EHF zero. O maior escore EHF foi alcançado por dois participantes, com 25 e 28 na escala SALSA. Na escala de participação 37 (53,6%) não apresentaram restrição e tinham escore EHF zero. Dois (2,9%) com escore EHF zero tinham leve restrição e 1 (1,5%), grande restrição. Reafirma-se a potencialidade destas ferramentas para a atenção integral aos portadores.
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Estudo transversal que objetiva analisar a ocorrência de casos de hanseníase em menores de 15 anos de idade residentes no Município de Fortaleza e notificados no SINAN. Os indicadores epidemiológicos nesta população mostram hiperendemicidade. Operacionalmente observa-se a manutenção da concentração de atendimento em algumas unidades de referência, apesar de alguns avanços. Diagnóstico tardio, elevado grau de incapacidade no diagnóstico e baixo grau de avaliação de contatos registrados revelam a fragilidade das ações de controle. Ressalta-se a possibilidade de erro diagnóstico frente às características da infecção nesta população. A ocorrência de casos de hanseníase nesta população representa um indicador epidemiológico de grande relevância e sua análise amplia a discussão sobre problemas operacionais na rede de serviços de saúde.
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Este estudo teve como objetivo conhecer o discurso acerca da vida de ex-hansenianos residentes em um antigo hospital-colônia. De abordagem qualitativa, caracteriza-se como uma pesquisa descritivo-exploratória. Os dados foram levantados com 12 sujeitos por meio de uma entrevista semiestruturada e foram organizados pela técnica do Discurso do Sujeito Coletivo, obtendo-se as seguintes ideias centrais: "Existe uma diferença entre o antes e o que é hoje e "Para a pessoa que tem sequela, não muda nada". Constatou-se que a percepção da cura da doença foi objeto de controvérsias, havendo os que a percebem como uma vitória, ou seja, o fato de não ter mais a doença lhes possibilita pensar em um (re)começo.
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Este é um estudo descritivo desenvolvido em um município do Estado de São Paulo. Objetivo: identificar e caracterizar as ações do Programa de Controle da Hanseníase nos serviços de saúde municipais. Metodologia: entrevistas gravadas com gestor municipal de saúde e profissionais da assistência à hanseníase. Resultados: a política pública municipal em saúde prioriza o desenvolvimento da atenção básica com ênfase na saúde pública. As ações são realizadas por profissionais capacitados e experientes em hanseníase. Ve rificou-se a não realização da busca ativa dos casos, necessária para o real conhecimento da situação epidemiológica, e das ações de educação em saúde, importante para a redução do estigma e aproximação do sujeito à nova situação de vida e enfrentamento de limitações
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Dapsone (DDS) (4,4` diaminodiphenylsulfone), the drug of choice for the treatment of leprosy, frequently induces hemolytic anemia and methemoglobinemia. N-hydroxylation, one of the major pathways of biotransformation, has been constantly related to the methemeglobinemia after the use of the drug. In order to prevent the dapsone-induced hemotoxicity, N-acetylcysteine, a drug precursor of glutathione, was administered in combination with DDS to male Wistar rats, weighting 220-240 g. The animals were then anaesthetized and blood was collected from the aorta for determination of plasma DDS concentration by HPLC, determination of methemoglobinemia and glutathione by spectrophotometry, and for biochemical and hematological parameters. Our results showed that N-acetylcysteine enhanced dapsone-induced methemoglobinemia due to increased dapasone plasmatic concentration and consequent increased N-hydroxylamine formation. We concluded that drug interactions with dapsone require individually studies in order to avoid undesirable effects of dapsone.
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Neuropathic arthropathy (Charcot`s arthropathy) is a progressive articular disease associated with a reduced sensorial and protector proprioceptive reflex. Its etiology includes many different conditions such as syringomyelia, traumatic lesion causing medullary deformity, spina bifida, diabetic neuropathy, leprosy neuropathy, neurofibromatosis, amyloid neuropathy, alcohol, and repetitive injection of hydrocortisone into joints, among others. However, the relationship between Charcot`s arthropathy and herpetic encephalitis has not yet been described. Herpes encephalitis causes acute and chronic diseases of the peripheral or central nervous system. It can manifest as subacute encephalitis, recurrent meningitis, or myelitis. It can also resemble psychiatric syndromes, diplopia, sensory changes in the face and limbs, personality changes, frontal dysexecutive syndrome, stiff neck, subclinical alterations of the vestibular function, intracranial hypertension, convulsion, hemiparesis, and generally includes motor components, among others. On the other hand, pure peripheral sensory disturbance has not been described. In this article, we report the clinical case of a patient with Charcot`s arthropathy secondary to pure peripheral sensory polyneuropathy as a consequence of progressive herpetic encephalitis sequelae. In this article, the authors report the first case of Charcot`s arthropathy secondary to herpetic encephalitis.
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Tuberculosis has emerged as a major concern in patients with immuno-mediated diseases, including psoriasis, undergoing treatment with biologicals. However, it is not known whether the chronically activated immune system of psoriasis patients interferes with their Mycobacterium tuberculosis (Mtb)-specific immunity, especially in tuberculosis-endemic areas like Brazil. We evaluated T-cell responses to a Mtb lysate and to the recombinant Mtb proteins ESAT-6 and Ag85B of tuberculin skin test (TST) positive and TST negative patients with severe or mild/moderate, untreated psoriasis in three different assays: lymphocyte proliferation, enzyme immunoassay for interferon (IFN)-gamma and interleukin (IL)-10 production by peripheral blood mononuclear cells and overnight enzyme immunospot (ELISpot) for enumerating IFN-gamma-secreting cells. In our cohort, a low proportion (29%) of the severe psoriasis patients tested were TST-positive. IFN-gamma and IL-10 secretion and T-cell proliferation to Mtb antigens were reduced in TST-negative but not in TST-positive patients with severe psoriasis when compared to healthy controls with the same TST status. Similarly, severe psoriasis patients had decreased cytokine secretion and proliferative response to phytohemagglutinin. However, most psoriasis patients and healthy controls showed detectable numbers of IFN-gamma-secreting effector-memory T-cells in response to Mtb antigens by ELISpot. TST-negative, mild/moderate psoriasis patients had responses that were mostly intermediary between TST-negative controls and severe psoriasis patients. Thus, patients with severe psoriasis possess decreased anti-Mtb central memory T-cell responses, which may lead to false-negative results in the diagnosis of TB infection, but retain T-cell memory-effector activity against Mtb antigens. We hypothesize that the latter may confer some protection against tuberculosis reactivation.
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A 45-year-old woman presented with a 3-year history of cutaneous lesions. Clinical examination revealed red-yellow to brownish infiltrated papules coalescing into annular-shaped plaques of several sizes with a hyperpigmented center affecting the abdomen and lower limbs, as well as multiple firm nodules on the right palm, elbows, and knees (Fig. 1a-c). The patient also reported sporadic arthralgia and low fever. She had been treated for leprosy for 2 years with multidrug therapy (clofazimine, dapsone, and rifampicin), with complete remission of the lesions during treatment, but recurrence after discontinuation. Histologic examination of a biopsy specimen taken from the cutaneous lesions showed an interstitial inflammatory infiltrate with the presence of many neutrophils and occasional foamy histiocytes (Fig. 2a). A pattern of perivascular eosinophilic fibrosis was observed in a biopsy specimen from a nodule (Fig. 2b). Special stains for acid-fast bacilli and fungi were negative. Laboratory findings included elevated immunoglobulin A (IgA) serum levels (1016 mg/dL; normal range, 69-382 mg/dL), elevated beta-globulin, and strong tuberculin reactivity. Normal or negative tests included direct immunofluorescence, serum immunofixation, anti-streptolysin O, and chest radiography. Autoimmune disorders and inflammatory intestinal diseases were excluded. The patient was treated with dapsone, 100 mg/day, with great improvement of the clinical picture. Hyperpigmented residual macules and some fibrotic nodules remained after 3 months.
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Telemedicine might increase the speed of diagnosis for leprosy and reduce the development of disabilities. We compared the accuracy of diagnosis made by telemedicine with that made by in-person examination. The cases were patients with suspected leprosy at eight public health clinics in outlying areas of the city of Sao Paulo. The case history and clinical examination data, and at least two clinical images for each patient, were stored in a web-based system developed for teledermatology. After the examination in the public clinic, patients then attended a teaching hospital for an in-person examination. The benchmark was the clinical examination of two dermatologists at the university hospital. From August 2005 to April 2006, 142 suspected cases of leprosy were forwarded to the website by the doctors at the clinics. Of these, 36 cases were excluded. There was overall agreement in the diagnosis of leprosy in 74% of the 106 remaining cases. The sensitivity was 78% and the specificity was 31%. Although the specificity was low, the study suggests that telemedicine may be a useful low-cost method for obtaining second opinions in programmes to control leprosy.