Ocorrência de Cochliomyia hominivorax em bovinos no Maranhão, Brasil / Occurrence of Cochliomyia hominivorax in cattle in Maranhão, Brazil

A bovinocultura possui grande importância na economia brasileira, entretanto, enfermidades afetam a produção, ocasionando perdas econômicas, como a miíase. O agente causador da miíase é Cochliomyia hominivorax, mosca-da-bicheira. Os agentes são aptos às regiões tropicais e subtropicais no Brasil, e exibem resistência parasitária aos fármacos. O objetivo deste trabalho foi verificar a ocorrência de C. hominivorax em bovinos no estado do Maranhão, Brasil. Foram escolhidas 19 propriedades de bovinos leiteiros e de corte, distribuídas em 11 municípios maranhenses. Foi indagado, por questionário, o manejo, os medicamentos utilizados e o custo de prevenção relacionado à mazela. Os bovinos foram examinados por inspeção, recolhendo-se parcialmente as larvas encontradas na superfície corporal. O número de larvas por bovino, local das lesões, a origem e complicações foram observadas e anotadas. Em seguida, os espécimes coletados foram acondicionados em frascos individuais, por hospedeiro amostrado, contendo álcool a 70°Gay-Lussac (GL). No laboratório as larvas das moscas foram examinadas em estereomicroscópio e identificadas pela sua morfologia. Verificou-se que mais de 60% (12/19) das propriedades possuíam bovinos parasitados. Dentre os 4.509 animais observados, 0,57% (26/4509) estavam parasitados com as larvas de C. hominivorax. Encontraram-se infestações no umbigo (50%), bem como na tábua do pescoço (42%), vulva (4%) e chifre (4%). Conclui-se que houve uma baixa prevalência de miíase causada por C. hominivorax em bovinos no estado do Maranhão, porém a prevenção e cuidados sanitários sempre devem ser adotados pelos pecuaristas.

Cattle breeding has great importance in the Brazilian economy, however, diseases affect production, causing economic losses, such as myiasis. The causative agent of myiasis is Cochliomyia hominivorax, the screwworm fly. The agents are suitable for tropical and subtropical regions in Brazil, and exhibit parasitic drug resistance. The objective of this work was to verify the occurrence of C. hominivorax in cattle in the state of Maranhão, Brazil. In the first stage, 19 dairy and beef cattle properties were chosen, distributed in 11 municipalities in Maranhão. Questionnaires asked about the management, the drugs used and the cost of prevention related to the disease. The cattle were examined by inspection, partially collecting the larvae found on the body surface. The number of larvae per bovine, location of lesions, origin and complications were observed and noted. Then, the collected specimens were placed in individual flasks, per sampled host, containing alcohol at 70°Gay-Lussac (GL). In the second stage, the fly larvae were identified in the laboratory, examined under a stereomicroscope and identified by their morphology and analysis of perithematics plaques and respiratory spiracles. It was found more that 60% (12/19) of the properties had parasitized cattle. Among the 4.509 animals observed, 0.57% (26/4509) were parasitized with the larvae of C. hominivorax. Infestations were found in the navel (50%), as well as in the neck plate (42%), vulva (4%) and horn (4%). It is concluded that there was a low prevalence of myiasis caused by C. hominivorax in cattle in the state of Maranhão, but prevention and health care should always be adopted by livestock farmers.

Anthelmintic effect of essential rhizome oil from Hedychium coronarium Koenig (Zingiberaceae) introduced in Northeastern Brazil.

Hedychium coronarium is native to Tropical Asia and has been introduced into several Brazilian biomes. Significant biological properties described for the essential oil (EO) from this species' rhizomes include antimicrobial, larvicidal, anti-inflammatory, antioxidant, phytotoxic, and anthelmintic activities. The primary constituents identified in this study by GC-MS in the EO were monoterpenes 1,8-cineole (33.5%), ß-pinene (17.0%), α-terpineol (7.7%), α-pinene (7.3%), limonene (5.2%), and p-cymene (4.9%), comprising 75.6% of total oil compounds. The main monoterpenes' EO and standards were tested against N2 (susceptible) and UVR15 (resistant) adult nematode Caenorhabditis elegans strains, with varying dead rates in motility tests.. Nematocidal activity was not attributed to 1,8-cineole and ß-pinene, the main H. coronarium rhizome oil components, as both exhibited an inhibitory concentration (IC50) ≥ 5 mg/mL. On the other hand, the α-pinene (IC50, 1.69 mg/mL) and (S)-(-)-limonene (IC50, 1.66 mg/mL) standards demonstrated more efficient action than rhizome oil in motility tests, with significant adult C. elegans nematode mortality rates. These results support the hypothesis that the combination of H. coronarium EO constituents can be helpful as a nematicidal product, due to their synergistic action.

Same sized three-way indwelling urinary catheters from various manufacturers present different irrigation and drainage properties.

BACKGROUND: The three-way indwelling urinary catheter (IUC) is used for continuous bladder irrigation and is considered the cornerstone for clinical treatment of patients with macroscopic hematuria. Although there seems to be a logical relationship between catheter size and efficacy of irrigation and drainage, we often observe relevant variations in these parameters between different brands of catheters available on the market. The aim of this study was to compare the mechanical properties of different models of latex and silicone three-way catheters in an in vitro setting that resembles clinical use. METHODS: Three different three-way catheters were evaluated: Gold Silicone-Coated Rusch® (Model A), 100% Silicone Rusch® (Model B) and X-Flow Coloplast® (Model C). Irrigation channel, drainage channel, and overall cross-sectional areas were all digitally measured. Irrigation and drainage channel flow rates were measured and correlated with their corresponding catheter cross-sectional area values. RESULTS: Different catheter models of the same caliber have different internal irrigation port diameters, internal drainage port diameters and internal cuff port diameters. The Model C IUC internal irrigation port diameter is significantly larger than models A and B. When flows were evaluated, we found that in the same model, the increase in caliber of the IUC was related to an increased drainage flow, but not to an increased irrigation flow. CONCLUSION: Precise measurements of the internal architecture of the three-way catheter, rather than relying on the caliber itself, could assist surgeons in choosing the best product for each specific patient, while minimizing complications.

A review on the occurrence of Cochliomyia hominivorax (Diptera: Calliphoridae) in Brazil / Revisão da ocorrência de Cochliomyia hominivorax (Diptera: Calliphoridae) no Brasil

Abstract Cochliomyia hominivorax (Coquerel, 1858), the New World screwworm, causes primary myiasis in wild and domestic animals in tropical and subtropical regions of Brazil. Although this species is considered to occur throughout the country, organized information about its recorded distribution has not been available until now. This article aimed to provide a comprehensive review of the historical and current data published on both immature (myiasis) and adult stages of C. hominivorax in Brazil. A total of 174 articles were found; of these, 141 articles reported myiasis cases in cattle (146 records), humans (68 records), and other mammalian hosts (40 records), and captures of adult flies were reported in 33 articles. C. hominivorax is widespread in Brazil, having been recorded in 208 municipalities in all major biomes of the country.

Resumo Cochliomyia hominivorax (Coquerel, 1858), a mosca-da-bicheira, causa miíase primária em animais silvestres e domésticos em regiões tropicais e subtropicais do Brasil. Embora esta espécie seja considerada de ocorrência em todo o país, informações organizadas sobre sua distribuição com base em registros não estavam disponíveis até o momento. Este artigo teve como objetivo fornecer uma revisão abrangente dos dados históricos e atuais publicados sobre o registro de estágios imaturos (miíase) e adultos de C. hominivorax, no Brasil. De 174 artigos encontrados, 141 relataram casos de miíase em bovinos (146 relatos), humanos (68 relatos) e outros mamíferos hospedeiros (40 relatos) e capturas de adultos de C. hominivorax foram registradas em 33 artigos. C. hominivorax encontra-se amplamente distribuída no Brasil, tendo sido registrada em 208 municípios brasileiros em todos os principais biomas do país.

A review on the occurrence of Cochliomyia hominivorax (Diptera: Calliphoridae) in Brazil.

Cochliomyia hominivorax (Coquerel, 1858), the New World screwworm, causes primary myiasis in wild and domestic animals in tropical and subtropical regions of Brazil. Although this species is considered to occur throughout the country, organized information about its recorded distribution has not been available until now. This article aimed to provide a comprehensive review of the historical and current data published on both immature (myiasis) and adult stages of C. hominivorax in Brazil. A total of 174 articles were found; of these, 141 articles reported myiasis cases in cattle (146 records), humans (68 records), and other mammalian hosts (40 records), and captures of adult flies were reported in 33 articles. C. hominivorax is widespread in Brazil, having been recorded in 208 municipalities in all major biomes of the country.

A review on the occurrence of Cochliomyia hominivorax (Diptera: Calliphoridae) in Brazil / Revisão da ocorrência de Cochliomyia hominivorax (Diptera: Calliphoridae) no Brasil

Cochliomyia hominivorax (Coquerel, 1858), the New World screwworm, causes primary myiasis in wild and domestic animals in tropical and subtropical regions of Brazil. Although this species is considered to occur throughout the country, organized information about its recorded distribution has not been available until now. This article aimed to provide a comprehensive review of the historical and current data published on both immature (myiasis) and adult stages of C. hominivorax in Brazil. A total of 174 articles were found; of these, 141 articles reported myiasis cases in cattle (146 records), humans (68 records), and other mammalian hosts (40 records), and captures of adult flies were reported in 33 articles. C. hominivorax is widespread in Brazil, having been recorded in 208 municipalities in all major biomes of the country.(AU)

Cochliomyia hominivorax (Coquerel, 1858), a mosca-da-bicheira, causa miíase primária em animais silvestres e domésticos em regiões tropicais e subtropicais do Brasil. Embora esta espécie seja considerada de ocorrência em todo o país, informações organizadas sobre sua distribuição com base em registros não estavam disponíveis até o momento. Este artigo teve como objetivo fornecer uma revisão abrangente dos dados históricos e atuais publicados sobre o registro de estágios imaturos (miíase) e adultos de C. hominivorax, no Brasil. De 174 artigos encontrados, 141 relataram casos de miíase em bovinos (146 relatos), humanos (68 relatos) e outros mamíferos hospedeiros (40 relatos) e capturas de adultos de C. hominivorax foram registradas em 33 artigos. C. hominivorax encontra-se amplamente distribuída no Brasil, tendo sido registrada em 208 municípios brasileiros em todos os principais biomas do país.(AU)

Lack of systematic topographic difference between attention and reasoning beta correlates.

Based on previous evidence for individual-specific sets of cortical areas active during simple attention tasks, in this work we intended to perform within individual comparisons of task-induced beta oscillations between visual attention and a reasoning task. Since beta induced oscillations are not time-locked to task events and were first observed by Fourier transforms, in order to analyze the cortical topography of attention induced beta activity, we have previously computed corrected-latency averages based on spontaneous peaks of band-pass filtered epochs. We then used Independent Component Analysis (ICA) only to single out the significant portion of averaged data, above noise levels. In the present work ICA served as the main, exhaustive means for decomposing beta activity in both tasks, using 128-channel EEG data from 24 subjects. Given the previous observed similarity between tasks by visual inspection and by simple descriptive statistics, we now intended another approach: to quantify how much each ICA component obtained in one task could be explained by a linear combination of the topographic patterns from the other task in each individual. Our hypothesis was that the major psychological difference between tasks would not be reflected as important topographic differences within individuals. Results confirmed the high topographic similarity between attention and reasoning beta correlates in that few components in each individual were not satisfactorily explained by the complementary task, and if those could be considered "task-specific", their scalp distribution and estimated cortical sources were not common across subjects. These findings, along with those from fMRI studies preserving individual data and conventional neuropsychological and neurosurgical observations, are discussed in support of a new functional localization hypothesis: individuals use largely different sets of cortical association areas to perform a given task, but those individual sets do not change importantly across tasks that differ in major psychological processes.