Luciana dos Santos Medeiros

Avaliação do uso da glicerina proveniente da produção de biodiesel na conservação de peças anatômicas

Pure glycerin is widely used for conservation of anatomical parts, which is very efficient and not toxic to the handlers. Nevertheless pure glycerin is extremely expensive and unaffordable for many anatomy laboratories. The purpose of the study was to demonstrate the viability of semi-purified glycerin from biodiesel production for preservation of anatomical parts. Fifteen hearts and 30 kidneys from pigs were studied. The glycerin from a biodiesel plant had the following composition: 80.5% glycerol, 12.8% humidity, 6.3% NaCl and 0.4% fatty acids. The organs were measured, analyzed and photographed before and after preservation protocol. The semi-purified glycerin caused no reduction in the dimensions of anatomical structures (mass, height and width) of statistical difference. Characteristics of consistency and flexibility of the anatomical parts was preserved. Additionally the costs and the production of toxic gases were reduced. The main achievement of this study was preservation of the morphological characteristics and improvement of the teaching and learning process.

Análise de custo-efetividade de protocolos no diagnóstico da tuberculose bovina em um rebanho naturalmente infectado

In several countries, bovine tuberculosis, caused by Mycobacterium bovis, is an economic and public health problem. Worldwide disease eradication programs are implemented with policies based on tuberculin testing and slaughter of reactive animals. However, little is known about the costs and the effectiveness of the eradication policies. We evaluated the cost-effectiveness of bovine tuberculosis diagnostic protocols on a multidisciplinary approach, applied in a naturally infected herd. Regarding the cost-effectiveness analysis (C/Ef) of ante-mortem diagnostic protocols, the Cervical Comparative Test (C/Ep=4.68), when used alone, is the diagnostic protocol most cost-effective for a naturally infected herd. For post-mortem confirmatory diagnostic, the histopathology (C/Ep=17.47) associated with the Cervical Simple Test and Cervical Comparative Test was the most cost-effective choice for the animals studied in this herd. However, the only diagnostic protocol that was able to identify 100% of the infected animals was the ELISA associated with the IFN test.

Primeiro registro de Amblyomma geayi (Acari: ixodidae) em preguiça (Bradypus variegatus) no estado do Acre, Amazônia Ocidental: relato de caso

O Amblyomma geayi e um carrapato da familia Ixodidae, encontrado principalmente em mamiferos e aves silvestres de regioes tropicais da America do Sul. Descreve-se a ocorrencia de um carrapato ixodideo da especie A. geayi, encontrado em uma preguica (Bradypus variegatus) proveniente do Parque Zoobotânico da Universidade Federal do Acre, Rio Branco, Acre, Amazonia Ocidental.

Avaliação da cavidade orofaríngea da tartaruga da Amazônia, Podocnemis expansa (Schweigger, 1812)

Os quelonios sao importantes como fonte alimentar e economica para as comunidades da regiao amazonica. Sendo assim, a caca, a pesca e a procura por ovos destes animais tem ocorrido frequentemente. Podocnemis expansa (Tartaruga da Amazonia) e o maior quelonio de agua doce da America do Sul. E uma especie largamente distribuida, porem, nota-se que aspectos anatomicos da especie sao insuficientemente descritos. O objetivo desse estudo foi descrever a cavidade orofaringea desses quelonios. Foram utilizadas 12 cabecas de P. expansa adultas, de ambos os sexos, com idade entre 3 a 8 anos, com peso corporeo de 5 a 22kg (media de 7,5kg). P. expansa conta com a presenca de rafontecas afiadas e bem desenvolvidas que, associadas a musculatura potente da mandibula e a lingua volumosa e bem distribuida no assoalho da orofaringe, atuam na apreensao e degluticao do alimento, garantindo uma maior adaptacao em diversos ambientes.