Abstract Microbiological safety of fish is a concern of consumers, industries and regulatory agencies worldwide. Among the pathogenic microorganisms, Salmonella spp. is one of the main agents of foodborne diseases and should be absent in animal products. Rapid and accurate identification of pathogens in the supply chain is important for both quality assurance and tracking infectious agents within the chain. In this context, this study aimed to evaluate the equivalence of two rapid detection tests, as alternative methods to the conventional Salmonella detection method, as well as to verify the microbiological quality parameters of two commercially important fish species in the Amazon biome. The plate count of aerobic bacteria ranged from 7.76 x 104 to 8.71 x 107 CFU.g-1 for mesophiles and 1.70 x 106 to 4.27 x 108 CFU.g-1 for psychrotrophic whereas the maximum for this group of microorganisms in fresh fish is 106 CFU.g-1. Regarding the Staphylococcus count, the two species presented variations between 1.35 x 104 to 1.51 x 105 CFU.g-1. This represents unsatisfactory conditions of handling, storage and conservation of fish species. The immunoenzymatic and molecular methods have been shown to be reliable, fast and effective in the detection of Salmonella and for its high index of agreement with the conventional detection method. We also emphasize the convenience of multiplex PCR application due to the high sensitivity, specificity, speed and accuracy of Salmonella detection.

Abstract The objective of this study was to evaluate the genetic diversity of Moraxella bovis and Moraxella bovoculi bacteria isolated from infectious bovine keratoconjunctivitis (IBK) outbreaks in the state of Rio Grande do Sul, Brazil. The genetic diversity among Moraxella spp. was evaluated by RAPD-PCR, JWP1-JWOPA07-PCR, ERIC-PCR and by sequencing the 16S-23S intergenic regions. Based on the dendrogram, two genetically differentiated clades were observed; 14 isolates were classified as M. bovis and 17 as M. bovoculi. Genetic distances between the M. bovis samples ranged from 0.0379 to 0.4285, while for M. bovoculi the dissimilarities ranged from zero to 0.7297. Alternatively, based on sequencing analyses of the 16S-23S intergenic region, M. bovis and M. bovoculi isolates were grouped into the same two different clades, but it was not possible to differentiate between isolates within clades. PCR techniques were demonstrated to be a satisfactory tool to unravel the genetic variability among Moraxella spp., while sequencing of the 16S-23S intergenic region was only able to differentiate two species of the Moraxella genus. Despite sampling geographically close regions, we demonstrate considerable genetic diversity in M. bovis and M. bovoculi strains and genetically distinct M. bovis strains co-infecting the same animal.

RESUMO: O objetivo deste estudo foi avaliar a utilização de dreno de sucção fechado em feridas cirúrgicas de mastectomias unilaterais totais em cadelas. Foram utilizadas 18 cadelas com peso médio de 14,87±9,29kg, idade média 9,34±2,68 anos, provenientes da rotina hospitalar, as quais foram selecionadas por meio de avaliação clínica e oncológica. Os animais foram alocados em dois grupos: Convencional (GC, n=9) que foram submetidas à cirurgia de mastectomia unilateral total, sem colocação de dreno e grupo Dreno (GD, n=9) que foram submetidas à mastectomia unilateral total com colocação do dreno de sucção fechado (Biovácuo?), sendo o diâmetro do dreno determinado conforme peso do animal. Foram realizadas cinco avaliações durante o período pós-operatório: avaliação clínica diária dos animais através da frequência cardíaca (FC), frequência respiratória (f), temperatura retal (TR), coloração de mucosas, tempo de preenchimento capilar (TPC), grau de desidratação, hemograma, perfil bioquímico (ureia, creatinina, colesterol, triglicérides e glicose); avaliação qualitativa do dreno; avaliação qualitativa da ferida cirúrgica, sendo esta também realizada em 14 e 30 dias quanto à presença ou não de exsudato, edema, integridade da pele, deiscência, necrose e fibrose cicatricial; avaliação quantitativa do fluido drenado e avaliação qualitativa do fluido drenado, quanto à celularidade, tipo e morfologia celular. Houve aumento dos valores médios de densidade, neutrófilos, linfócitos, e aumento do valor de mediana de fibrinogênio do fluido drenado em 72 horas em relação às 24 horas no grupo GD. Ocorreu aumento do exsudato em 24, 48 e 72 horas no GD quando comparado ao GC. Houve aumento do volume de fluido drenado em 60 e 72 horas em relação às 12 horas no grupo GD. Houve redução do valor médio de eritrócitos em 72 horas em relação ao basal no grupo GD. Observou-se aumento nos valores médios de hemoglobina e hematócrito em 24 horas no grupo GC quando comparado ao GD. Houve aumento no valor médio de neutrófilos segmentados no basal no GD quando comparado ao GC. Conclui-se que a técnica de colocação de dreno de sucção fechado apresenta maior teor de exsudato. Recomenda-se que o vácuo do dreno seja refeito de 12 em 12 horas, sendo inicialmentrealizado 6 horas após o término da cirurgia. O dreno de sucção fechado não gera desconforto adicional ao paciente; recomenda-se que o mesmo seja removido 72 horas após o término da cirurgia, quando a produção de fluido diminui, porém mesmo assim alguns indivíduos podem apresentar formação de seroma no pós-operatório tardio.

ABSTRACT: The aim of this study was to evaluate the use of closed suction drain in surgical wounds of total unilateral mastectomy in dogs. Eighteen dogs were used with an average weight of 14.87±9.29kg, average age 9.34±2.68 years, from the hospital routine, which were selected through clinical and oncological evaluation. The animals were divided into two groups: Conventional (CG, n=9) which underwent total unilateral mastectomy surgery without drain and Drain group (DG, n=9) which underwent complete unilateral mastectomy with placement closed suction drain (Biovácuo?). The diameter of the drain was determined according to the animal weight. Five evaluations were performed during the postoperative period: clinical evaluation of the animals daily through the heart rate (HR), respiratory rate (RR), rectal temperature (RT), color of mucous membranes, capillary refill time (CRT), degree of dehydration, blood count, chemistry profile (urea, creatinine, cholesterol, triglycerides and glucose); qualitative assessment of the drain; qualitative assessment of the surgical wound, is also being held on 14 and 30 days for the presence or absence of exudate, edema, skin integrity, dehiscence, necrosis and scarring; quantitative evaluation of the drained fluid; qualitative assessment of fluid drained, as the cellularity type and cell morphology. Surgical time was recorded in both groups. There were an increase in average values of density, neutrophils, lymphocytes, and increased fibrinogen median value of drained fluid in 72 hours compared to 24 hours in DG group. There was an increase of exudate within 24, 48 and 72 hours in DG when compared to GC. There was an increase in the volume of drained fluid in 60 and 72 hours compared to 12 hours in DG. There was a reduction in the average value of red blood cells within 72 hours from baseline in DG group. There was an increase in average hemoglobin and hematocrit in 24 hours in the control group compared to the DG. There was an increase in the average value of neutrophils targeted at baseline in DG when compared to CG. It follows that, the closed suction drain placement technique presents more exudate. It is recommended that the drain vacuum is redone 12 in 12 hours, initially being performed 6 hours after surgery. The closed suction drain does not generate additional discomfort to the patient; it is recommended that it be removed 72 hours after the surgery, when the fluid production decreases, but even so some individuals may present seroma formation in the late postoperative.

RESUMO: O objetivo deste estudo foi avaliar os efeitos de diferentes protocolos de sedação sobre a pressão arterial, parâmetros ecocardiográficos e eletrocardiográficos em cães. Foram utilizados 24 cães, machos, SRD, com peso médio de 9,87±3,0kg, os quais foram alocados aleatoriamente em quatro grupos (n=6), que foram submetidos à sedação com os protocolos acepromazina (0,05mgkg-1) e butorfanol (0,3mgkg-1) (AB), acepromazina (0,05mgkg-1) e metadona (0,5mgkg-1) (AM), acepromazina (0,03mgkg-1), metadona (0,5mgkg-1) e midazolam (0,3mgkg-1) (MAM) e metadona isolada (0,5mgkg-1) (M). Foi realizada avaliação da pressão arterial sistólica (PAS) não invasiva, eletrocardiografia computadorizada e ecocardiografia imediatamente antes da aplicação do protocolo de sedação (basal) e repetindo-se as mesmas avaliações, 15 minutos após. Observou-se redução na PAS nos grupos AB, MAM, AM, em relação ao basal. Na eletrocardiografia, houve redução da FC após sedação em todos grupos, sendo observada bradicardia após sedação em dois cães do grupo M e um animal do grupo AM. A duração da onda P aumentou após sedação nos grupos AM e M. Não foram observadas alterações nas dimensões cardíacas, avaliadas pela ecocardiografia, após sedação. A fração de encurtamento (FS) reduziu após sedação no AM e os cães do AB apresentaram menor queda da FS, diferindo dos demais grupos. O índice cardíaco (IC) foi menor no AM e M em relação aos demais. Os animais do grupo AB foram menos resistentes à execução dos exames, apresentando melhores escores de sedação. Concluiu-se que a associação acepromazina e butorfanol foi o melhor protocolo de sedação para realização do ecocardiograma, sendo os cães menos resistentes à execução do exame, mantendo estáveis os parâmetros ecocardiográficos de fração de encurtamento e índice cardíaco.

ABSTRACT: The present study aimed to evaluate the effects of different sedation protocols on blood pressure and echocardiographic and electrocardiographic parameters in dogs. In total, 24 male mixed-breed dogs with a mean weight of 9.87±3.0kg were used.Animals were randomly divided into four groups (n=6), which were subjected to sedation using the following protocols: acepromazine (0.05mgkg-1) and butorphanol (0.3mgkg-1) (AB); acepromazine (0.05mgkg-1)and methadone (0.5mgkg-1) (AM); acepromazine (0.03mgkg-1), methadone (0.5mgkg-1), and midazolam (0.3mgkg-1)(MAM); and methadone only (0.5mgkg-1) (M). Indirect blood pressure (BP) measurements and computerized electrocardiography (ECG) and echocardiography (ECO) were performed immediately before the application of the sedation protocol (baseline), and the same evaluations were repeated after 15 minutes. BP decreased in groups AB, MAM, and AM compared to baseline values. Electrocardiographic measurements showed decreased heart rates (HRs) after sedation in all groups, and bradycardia was observed after sedation in two dogs from group M and one animal from group AM. The P-wave duration increased after sedation in groups AM and M. After sedation, no changes in cardiac dimensions were revealed byECO.Fractional shortening (FS) decreased after sedation in the AM group, and dogs from group AB exhibited a smaller decrease in FS compared with the other groups. The cardiac index (CI) was lower in groups AM and M than in the other groups. Animals from group AB were less resistant to examination and exhibited the most favorable sedation scores. It was concluded that the combination of acepromazine and butorphanol was the best sedation protocol for performing echocardiogram measurementsbecause dogs were less resistant to examinations and echocardiographic parameters of FS and CI remained stable.

In the current study, an alternative method has been proposed for simultaneous analysis of palmitic, stearic, oleic, linoleic, and linolenic acids by capillary zone electrophoresis (CZE) using indirect detection. The background electrolyte (BGE) used for the analysis of these fatty acids (FAs) consisted of 15.0 mmol L−1 NaH2PO4/Na2HPO4 at pH 6.86, 4.0 mmol L−1 SDBS, 8.3 mmol L−1 Brij 35, 45% v/v acetonitrile (can), and 2.1% n-octanol. The FAs quantification of FAs was performed using a response factor approach, which provided a high analytical throughput for the real sample. The CZE method, which was applied successfully for the analysis of pequi pulp, has advantages such as short analysis time, absence of lipid fraction extraction and derivatization steps, and no significant difference in the 95% confidence intervals for FA quantification results, compared to the gas chromatography official method (AOCS Ce 1h-05).

A utilização de parâmetros apenas morfológicos para posicionar taxonomicamente diversas espécies em sub-famílias e tribos na família Rubiaceae é bastante problemática devido à falta de informações sobre a distribuição geográfica e de características morfoanatômicas nos níveis hierárquicos mais baixos, como por exemplo, o gênero Chimarrhis. O perfil micromolecular de diferentes espécies pode auxiliar na delimitação de tribos indicando tendências filogenéticas mais completas entre as tribos das sub-famílias, já que os metabólitos secundários são expressões de adaptação, regulação e evolução de um determinado táxon. Nesse contexto, os alcalóides indólicos monoterpênicos isolados de Chimarrhis turbinata foram bastante úteis para embasar a classificação taxonômica feita por Robbrecht, em que posiciona Chimarrhis como um gênero da tribo Condamineae e subfamília Cinchonoideae.

The morphological parameters used to establish close connections among species taxonomically different into the Rubiaceae family is complex, mainly due to the lack of information on habitat and morphoanatomical characters in the lower hierarchic groups, for example, Chimarrhis genus. The micromolecular profile of delimited species into determined taxa can be useful to establish the boundaries among close taxonomic groups, and to indicate evolutionary phylogenetic trends into the taxa. Several indole alkaloids isolated from C. turbinata showed to be a valuable tool to support the taxonomic classification performed by Robbrecht, who established the most recent taxonomy for Rubiaceae, based on morphological characters, and concluded that Chimarrhis belong to Condamineae, and subfamily Cinchonoideae.

Um método de extração de multiresíduos baseado na técnica de dispersão da matriz em fase sólida ("MSPD"), foi otimizado e validado para a extração e análise cromatográfica de 27 agrotóxicos (isômeros a, b, g, d do hexaclorociclohexano (HCH), dieldrin, endrin, heptacloro e seu epóxido (HE), a e b-endosulfan, o,p'-DDD, p,p'-DDD, o,p'-DDE, p,p'-DDE, o,p'-DDT, p,p'-DDT, dicofol, metoxicloro, mirex, hexaclorobenzeno (HCB), clorotalonil, parationa metílica, fenitrotiona, malationa, folpete, diazinona, cis e trans-permetrina em laranjas. A amostra macerada é inicialmente homogeneizada com C18, o homogeneizado é transferido para uma coluna de vidro contendo sílica gel onde se adiciona 10mL de acetato de etila como solvente de eluição. O eluente é concentrado, diluído em isooctano e 1mL deste é injetado no cromatógrafo a gás. Para a separação e quantificação dos 27 agrotóxicos, foi utilizado um CG/DCE. A confirmação dos mesmos foi feita por espectrometria de massas. Para a quantificação dos 27 agrotóxicos utilizou-se a padronização externa. As recuperações dos mesmos variaram de 70 a 120%, considerando-se os níveis de adição agrotóxicos/amostra de 0,02 e 2,0mg/kg. Os limites de quantificação variaram de 0,01 a 0,5mg/kg.

A multiresidue method of extraction based on matrix solid-phase dispersion (MSPD) technique was optimized and validated for chromatographic analyses of twenty seven pesticides residues [hexachlorocyclohexane (HCH) isomers (a, b, g, d), dieldrin, endrin, heptachlor and its epoxide (HE), a and b-endosulfan, o,p'-DDD, p,p'-DDD, o,p'-DDE, p,p'-DDE, o,p'-DDT p,p'-DDT, dicofol, methoxychlor, mirex, hexachlorobenzene (HCB), chlorotalonil, parathion methyl, fenitrothion, malathion, folpet, diazinon, permethrin (cis and trans) in oranges. The sample was blended with C18 and then the homogenized sample was introduced onto a glass column containing silica. Ten mL of ethyl acetate was added to the column as elution solvent. The eluent was concentrated, diluted in isooctane and 1mL was injected into the gas chromatograph. The analyses of pesticides were performed using a GC/ECD. Confirmation was done by mass spectrometry. The recovery ranged from 70 to 120% in the concentration range of 0.02 to 2.0mg/kg. The limits of quantification ranged from 0.01 to 0.5mg/kg.

A medicina e as observações científicas incorporam noções de valores culturais associados aos aspectos climáticos para definir um grupo nosológico específico denominado "doenças tropicais", "patologia dos climas quentes" ou ainda "doenças exóticas". Pretendemos resgatar neste estudo a relevância do aspecto climático na definição de patologias, enfatizando as interseções ideológicas, políticas e culturais que contribuíram para a formulação de correntes de pensamento preocupadas em discutir cientificamente a importância do clima na construção ideológica de um "mundo particular", os trópicos.

Microbiology as we know, has given the theoretical and methodological elements to set up and evaluate the concept of "tropical disease", to confirm and establish it. Tropical Medicine is known today as a science dealing with parasites and infections, the most common causes of health affections throughout the intertropical zone of the globe. Due to a wider identification of these infections, this speciality has increased its scope, the infections having a natural diversity in the tropics. The vision of the tropics, which the main component included the climatic determination of disease, is decreased today by the concept that diseases are on a social and economic basis, as well as ecologically set up. This interpretation which highlights the physical and natural determinants of disease, tends to place climatic, geographic and biological factors on the same level, reducing man to the animal interaction plan and turning culture and society as another way of the environment.

A medicina e as observações científicas incorporam noções de valores culturais associados aos aspectos climáticos para definir um grupo nosológico específico denominado "doenças tropicais", "patologia dos climas quentes" ou ainda "doenças exóticas". Pretendemos resgatar neste estudo a relevância do aspecto climático na definição de patologias, enfatizando as interseções ideológicas, políticas e culturais que contribuíram para a formulação de correntes de pensamento preocupadas em discutir cientificamente a importância do clima na construção ideológica de um "mundo particular", os trópicos.

Microbiology as we know, has given the theoretical and methodological elements to set up and evaluate the concept of "tropical disease", to confirm and establish it. Tropical Medicine is known today as a science dealing with parasites and infections, the most common causes of health affections throughout the intertropical zone of the globe. Due to a wider identification of these infections, this speciality has increased its scope, the infections having a natural diversity in the tropics. The vision of the tropics, which the main component included the climatic determination of disease, is decreased today by the concept that diseases are on a social and economic basis, as well as ecologically set up. This interpretation which highlights the physical and natural determinants of disease, tends to place climatic, geographic and biological factors on the same level, reducing man to the animal interaction plan and turning culture and society as another way of the environment.

OBJETIVO: Identificar disfunções cardíacas precoces em pacientes assintomáticos com cardiomiopatia chagásica. MÉTODOS: Foram estudados 38 indivíduos masculinos, sendo o grupo controle constituído de 20 indivíduos sedentários normais e o grupo Chagas de 18 pacientes assintomáticos, portadores da doença de Chagas, com eletrocardiograma alterado e fração de encurtamento (DD) normal ao ecocardiograma. Ambos os grupos foram submetidos à avaliação da capacidade funcional máxima, com medidas do consumo máximo de oxigênio (VO2max), índice de pulso de oxigênio (PO2max), ventilação máxima (VE max), freqüência cardíaca máxima (FC max), e limiar anaeróbio do VO2max (LA-VO2). A função diastólica do ventrículo esquerdo foi avaliada pelo ecocardiograma convencional (ondas E e A além da relação E/A). RESULTADOS: Não ocorreram diferenças significativas entre os dois grupos em relação ao DD (p=0,212) e a idade média (p=0,060). Houve diferença significativa (p<0,001) em relação aos parâmetros VO2max, PO2max, VE max, FC max, LA-VO2, onda E e relação E/A. Não houve significância (p=0,520) em relação a onda A. CONCLUSÃO: O comprometimento na função ventricular pode contribuir para as diferenças acima mencionadas, como conseqüência de disfunção sistólica e diastólica.

PURPOSE: To identify early cardiac dysfunctions in asymptomatic patients with Chagas' cardiomyopathy. METHODS: We studied 38 male individuals: control group consisting of 20 sedentary normal individuals and Chagas' group, of 18 asymptomatic patients with Chagas' disease, with suggestive electrocardiographic alterations and normal fractional shortening (FS) on echocardiogram. Both groups were submitted to evaluation of the maximal functional capacity, with measurements of maximal O2 consumption (VO2max), O2-pulse rate (PO2max), maximal ventilation (VEmax), maximal heart rate (HRmax), and anaerobic threshold of the VO2max(VO2-AT). Left ventricular diastolic function was evaluated by conventional echocardiography (E wave, A wave and E/A ratio). RESULTS: No significant differences occurred between the two groups with regard to FS (p=0.212) and age means (p=0.060). The 2 groups were significantly different (p<0.001) regarding the parameters VO2max, PO2max, VEmax, HRmax and VO2-AT, E wave and E/A ratio. There was no difference (p=0.520) in A wave. CONCLUSION: Impaired ventricular function may account for the above mentioned differences, a consequence of both systolic and diastolic dysfunctions.