Ocular echobiometry and resistivity Index of external ophthalmic artery in agoutis (Dasyprocta prymnolopha)

Veterinary Ophthalmology provides complementary information for the diagnosis of ocular pathologies. Studies in wild species are essential. Among the diagnostic techniques in ophthalmology, two-dimensional ultrasonography stands out. The agouti is a rodent belonging to the Dasyproctidae family that has been widely used as an experimental model. For these animals, sight is one of the crucial senses for their survival. The aim of this study was to evaluate the effectiveness of the two-dimensional ocular ultrasound technique to obtain anatomical measurements and the external ophthalmic artery resistivity index, presumably normal in the species Dasyprocta prymnolopha. Forty eye bulbs of 20 adult rodents of the species were evaluated by ultrasonography. In these animals, B-mode echobiometry was performed using the transpalpebral approach and the hemodynamic study of the external ophthalmic artery using the color Doppler technique. All examinations were initiated by the left eye bulb and all measurements were performed by only one examiner. The collected data related to echobiometry were analyzed using Bioest 5.0 for Windows. Initially, normality was tested using the Shapiro-Wilk test for each parameter, then the paired t-test was performed, comparing right and left eyes, and a significance level of 5% (P < 0.05) was adopted. Based on the methodology used, the following values were obtained for the right and left eyeballs, respectively: anterior chamber thickness - mean of 1.28 ± 0.3 mm and 1.22 ± 0.1 mm; lens thickness - 8.27 ± 0.9 mm and 8.11 ± 0.9 mm; vitreous chamber thickness - 5.35 ± 0.48 mm and 5.30 ± 0.47 mm and axial length - 12.7 ± 0.9 mm and 13 ± 0.68 mm. The mean external ophthalmic artery resistivity values were 0.4305 ± 0.0390 and 0.4258 ± 0.0387 (right and left eye, respectively), characterizing a low resistance. There was no statistical difference between the right and left eyeballs in any of the studied parameters. The use of the convex transducer was feasible, promoting adequate contact with the ocular surface and images of satisfactory quality for obtaining measurements, similar to what was observed in studies evaluating the ocular biometry of primates and dogs. The anterior chamber thickness values in this experiment did not differ statistically between the antimers, as well as observed for dogs. The data obtained for lens thickness did not differ statistically for antimers, like those obtained for other rodent species evaluated with the same methodology. The mean values of vitreous chamber thickness were like those observed in chinchillas but correspond to about half of that obtained for capybaras. In this study, the external ophthalmic artery was characterized in all animals, but obtaining the spectral tracing was difficult due to its fine caliber. In wild animals, and especially in wild rodents, there are few data reporting the resistivity of the ophthalmic artery, and there is a lack of studies, which can be explained by the behavioral characteristics of defense and by the high susceptibility to stress in capture, since the performing the technique requires, as in other procedures, the use of chemical containment. (AU)

Ecocardiografia Padrão, com Strain e Strain Rate com Speckle Tracking Bidimensional em Macaco-Capuchinho (Cebus Apella, Linnaeus, 1758) / Standard Echocardiography, Strain and Strain Rate by Two-Dimensional Speckle Tracking in Capuchin Monkey (Cebus Apella, Linnaeus, 1758)

Introdução: O macaco-capuchinho é uma espécie de primata não humano que demonstra grande potencial para estudos pré-clínicos devido às semelhanças anatômicas e fisiológicas com os seres humanos. Objetivo: Estudar os índices de deformação miocárdica em macacos-capuchinhos anestesiados utilizando speckle tracking. Métodos: Foram utilizados dezesseis animais do Parque Zoobotânico, em Teresina, Piauí, Brasil, com restrição química, utilizando uma combinação de cetamina e midazolam. Os estudos ecocardiográficos foram obtidos nos modos B, M e Doppler, medindo-se strain e strain rate através de speckle tracking. Resultados: As variáveis que apresentaram coeficientes de correlação estatisticamente significativos em relação ao peso foram a parede livre do ventrículo esquerdo em diástole (PLVEd), diâmetro interno do ventrículo esquerdo em diástole (DIVEd), diâmetro interno do ventrículo esquerdo em sístole (DIVEs), onda E, A'VD, movimento do anel mitral (MAM) e excursão sistólica do plano do anel tricúspide (TAPSE). A frequência cardíaca (FC) mostrou correlação positiva com a onda E e a onda A e correlação negativa com o tempo de relaxamento isovolumétrico (TRIV). A fração de encurtamento (FS) apresentou correlação positiva com a razão entre as ondas E e A (r = 0,61). TAPSE mostrou correlações positivas com E'VD e A'VD. Os valores obtidos para o strain circunferencial (-18,17 ± 4,68%), radial (47,13 ± 5,24%) e longitudinal (-26,46 ± 5,155%) para os macacos-capuchinhos estavam dentro dos intervalos normais para machos e fêmeas. Conclusão: O presente estudo fornece os primeiros valores de referência para medidas ecocardiográficas em modos B, M e Doppler para macacos-capuchinhos anestesiados com cetamina e midazolam. Os valores de strain e strain rate obtidos utilizando a técnica de speckle tracking mostraram-se semelhantes aos obtidos em seres humanos, sugerindo que esta ferramenta pode ser explorada em estudos pré-clínicos utilizando o modelo do macaco-capuchinho

Introduction: The capuchin monkey is a type of nonhuman primate that has shown great potential for preclinical studies because of its anatomical and physiological similarities to humans. Objective: To study the indices of myocardial deformation in anesthetized capuchin monkeys using speckle tracking. Methods: Sixteen animals from the Zoobotanical Park, Teresina, Piauí, Brazil, were used and chemically restrained using a combination of ketamine and midazolam. Echocardiography recordings were obtained in B, M and Doppler modes, and strain and strain rate were measured using speckle tracking. Results: The variables that showed statistically significant correlation coefficients in relation to weight were LVFWd, LVIDd, LVIDs, E wave, A'RV, MAM and TAPSE. HR showed a positive correlation with the E wave and A wave and a negative correlation with IVRT. FS presented a positive correlation with the E/A wave relationship (r = 0.61). TAPSE showed positive correlations with E'RV and A'RV. The values obtained for circumferential (-18.17 ± 4.68%), radial (47.13 ± 5.24%) and longitudinal (- 26.46 ± 5.15%) strain for the capuchin monkeys were within the normal ranges for males and females. Conclusion: The present study provides the first reference values for echocardiographic measurements in B, M and Doppler modes for capuchin monkeys anesthetized with ketamine and midazolam. The strain and strain rate values obtained using speckle tracking showed similarities with those obtained in humans, suggesting that this tool has the potential to be exploited in preclinical studies using the capuchin monkey model

Hepatic steatosis in six-banded armadillo (Euphractus sexcinctus Linnaeus, 1758) / Esteatose hepática em tatu-peba (Euphractus sexcinctus Linnaeus, 1758)

Abstract The six-banded armadillo (Euphractus sexcinctus) stands out among wild mammals due to the rare occurrence of spontaneous metabolic diseases. When altered, the liver, which is important in metabolism, may trigger a dysfunctional cascade, leading to hepatic steatosis. Here we describe a case of hepatic steatosis in a six-banded armadillo living in captivity. The female specimen was captured and donated to the Federal University of Piaui under SISBIO authorization nº53303. The animal was first referred for a veterinary clinical evaluation, and then euthanized following the ethical standards of the Federal Council of Veterinary Medicine. At the start of the dissection, the abdominal cavity was accessed and sections of all ex situ liver lobes, spleen and mandibular lymph node were subjected to routine histological processing; the results were photo documented. The anatomic and histopathological analysis confirmed the diagnosis of hepatic steatosis, which we propose is related to an infectious process as a result of the changes observed in the organs of the lymphoid system. This report of fatty liver disease in armadillo suggests an acute infectious process with lymphoid system involvement.

Resumo O tatu-verdadeiro (Euphractus sexcinctus) se destaca entre os mamíferos selvagens devido à rara ocorrência de doenças metabólicas espontâneas. Quando alterado, o fígado, que é importante no metabolismo, pode desencadear uma cascata disfuncional, levando a esteatose hepática. Foi descrito um caso de esteatose hepática em um tatu-verdadeiro vivendo em cativeiro. O espécime feminino foi capturado e doado para a Universidade Federal do Piauí sob a autorização SISBIO nº53303. O animal foi encaminhado para uma avaliação clínica veterinária e, depois, submetido à eutanásia seguindo os padrões éticos do Conselho Federal de Medicina Veterinária. No início da dissecção, acessou-se a cavidade abdominal e as seções de todos os lóbulos do fígado ex situ, do baço e do linfonodo mandibular foram submetidos ao processamento histológico de rotina. Os resultados foram fotomicrografados e documentados. A análise anatômica e histopatológica confirmou o diagnóstico de esteatose hepática, que está relacionada a um processo infeccioso como resultado das mudanças observadas nos órgãos do sistema linfóide. Este relatório de doença hepática gordurosa no armadillo sugere um processo infeccioso agudo com comprometimento do sistema linfático.

Saberes Maternos Sobre a Relação da Amamentação Natural e Hábitos Bucais Deletérios / Maternal Knowledge about the Relationship between Breastfeeding and Deleterious Oral Habits

A amamentação é a mais importante ação para o crescimento e desenvolvimento adequados da criança. A Organização Mundial da Saúde recomenda a amamentação natural exclusiva nos seis primeiros meses de vida do bebê. O insucesso da amamentação pode estar ligado à falta de apoio e orientação das mães. Dessa forma, o objetivo da pesquisa foi verificar o conhecimento das mães sobre a influência da amamentação natural no desenvolvimento de hábitos bucais deletérios. Estudo observacional transversal, desenvolvido após análise e aprovação do Comitê de Ética e Pesquisa. Foram realizados questionários estruturados, com perguntas abertas e fechadas, dirigidos às mães que procuram atendimento de primeira consulta para seus filhos em uma clínica-escola da cidade de Teresina, Piauí, Brasil. O questionário abordou o perfil socioeconômico e a temática da amamentação natural, hábitos deletérios e a sua relação. Observou-se que a grande parcela (92,5%) das mães relatou ter recebido informações sobre amamentação, entretanto a prevalência de hábitos deletérios foi significativa (54,3%). O tempo médio de aleitamento materno exclusivo foi de 4,98 meses, com associação estatisticamente significativa entre o tempo de aleitamento materno exclusivo e o recebimento de informações (p=0,026). Quanto à percepção do seu próprio conhecimento, mais da metade das mães classificaram como regular (48,9%) ou insatisfatório (11,7%) o seu conhecimento sobre a relação da amamentação natural com o desenvolvimento de hábitos bucais deletérios. Não houve impactos do conhecimento das mães sobre amamentação natural no desenvolvimento de hábitos bucais deletérios. AU

Breastfeeding is the most important action for the proper growth and development of children. The World Health Organization recommends exclusive breastfeeding for the first six months of a baby's life. The failure of breastfeeding may be linked to lack of support and guidance of mothers. Thus, the objective of the research was to assess the mothers' knowledge about the influence of natural breastfeeding on the development of deleterious oral habits. Cross-sectional observational study, developed after review and approval by the Ethics and Research Committee. Structured questionnaires were performed with open and closed questions for mothers who seeking care first consultation for their children in a school clinic in the city of Teresina, Piauí state, Brazil. The questionnaire addressed the socioeconomic profile and the theme of natural breastfeeding, deleterious habits and its relationship with. It was observed that a large proportion (92.5%) of mothers reported receiving information on breastfeeding, however the prevalence of deleterious habits was significant (54.3%). The mean duration of exclusive breastfeeding was 4.98 months, with a statistically significant association between duration of exclusive breastfeeding and receiving information (p = 0.026). As for the perception of their own knowledge, more than a half of the mothers classified as regular (48.9%) or poor (11.7%) their understanding of the relationship of breastfeeding to the development of deleterious oral habits. There was no impact of knowledge of mothers on breastfeeding in the development of deleterious oral habits. AU