ABSTRACT Dogs are considered to be the main domestic reservoir associated with the transmission of Leishmania (L.) infantum chagasi to humans in endemic areas of visceral leishmaniasis in America. However, little is known about the role of canines as a source of infection in endemic areas of nonulcerated cutaneous leishmaniasis (NUCL). Therefore, the objective of the present study was to investigate the role of dogs as a possible reservoir of the parasite in Southern Honduras. Dogs (n = 107) living with individuals affected by NUCL were clinically examined and biological material was collected for parasitological and immunological diagnosis. Most animals showed a healthy appearance and a few presented slight weight loss (64%), alopecia (7%), onychogryphosis (5%) and skin lesions (1%). The overall seroprevalence of Leishmania infection based on the DDP ® quick test and/or in-house ELISA serological test was 41%. The presence of the parasite’s DNA was confirmed in 94% of the dogs; however, the average parasite load in the buffy coat was low at 6.09 parasites/µL, ranging between 0.221 and 50.2. The skin of seropositive dogs examined by histopathology using paraffin sections stained by hematoxylin and immunohistochemistry did not show cutaneous lesions or parasite amastigotes. Based on the absence of parasites in the skin and the low parasite load detected in the buffy coat, it seems that the dog does not represent a good source of infection for the vector in the endemic area of NUCL transmission in Southern Honduras. Other domestic and/or wild animals should be investigated.

ABSTRACT Introduction: The COVID-19 pandemic has generated diverse reactions, but these have not yet been measured in the Latin American population. Objective: To determine the factors associated with the perception of fatalism in the face of COVID-19 infection in inhabitants of 20 cities in Peru. Material and Methods: A cross-sectional, multicenter study with a sample size of 2 466 people from 20 cities of Peru that measured fatalism during the COVID-19 pandemic was conducted through a validated survey (Cronbach´s alpha: 0,78) consisting of 7 items. Statistical analysis was conducted in terms of each city, and p < 0,05 was considered significant. Results: Of the 2 466 respondents, 36 % were depressed, 26 % thought that they might die, 17 % say that this was evidence of the end of the world, and 9 % could make a fatal decision. Women were more likely to engage in three of the fatalistic behaviors (becoming infected, p = 0,020; infecting others, p = 0,004, and becoming depressed, p = 0,020). At an older age there were 5 perceptions (infecting others, p = 0,007; becoming complicated, p < 0,001; becoming depressed, p < 0,001, thinking they would die, p < 0,001; or committing suicide, p = 0,014). Those at risk of complications of COVID-19 had 4 perceptions (infecting others, p = 0,024; becoming complicated, p = 0,002; thinking they would die, p < 0,001; and thinking that this is a sign of the end of the world, p = 0,039). Respondents who were agnostic exhibited a lower frequency in 5 perceptions, while atheist respondents showed a lower frequency in 2 perceptions. Conclusion: Many fatalistic ideas are found among the population in the face of the coronavirus pandemic.

RESUMEN Introducción: la pandemia del COVID-19 ha generado reacciones diversas, pero estas aún no han sido medidas en la población latinoamericana. Objetivo: determinar los factores asociados a la percepción de fatalismo ante la infección del COVID-19 en pobladores de 20 departamentos del Perú. Material y Métodos: estudio transversal analítico, de tipo multicéntrico que con una muestra de 2466 personas en 20 departamentos del Perú midió el fatalismo ante la pandemia del COVID - 19 a través de una encuesta validada (Alpha Crombach: 0,78) que consistía en 7 ítems. El análisis estadístico fue realizado en función de cada ciudad y se consideró significativos p < 0,05. Resultados: de los 2466 encuestados, el 36 % se deprimirían, el 26 % piensa que podrían fallecer, el 17 % dice que esto es evidencia del fin del mundo y el 9 % podrían tomar una decisión fatal. Las mujeres tuvieron mayor frecuencia de 3 de las conductas fatalistas (contagiarse p=0,020; contagiar a otros p=0,004 y deprimirse p=0,020). A mayor edad hubo 5 percepciones (contagiar a otros p=0,007; complicarse p<0,001; deprimirse p<0,001, pensar que morirían p<0,001 o suicidarse p=0,014). Los que tenían un riesgo para complicación por COVID-19 tuvieron 4 percepciones (contagiar a otros p=0,024; complicarse p=0,002; pensar que morirían p<0,001 y que esto es señal del fin del mundo p=0,039). El ser agnóstico tuvo menor frecuencia de 5 percepciones, el ser ateo en 2. Conclusión: Se halló muchas ideas fatalistas entre la población ante la pandemia de coronavirus.

RESUMO: Cistos aracnoide são acúmulos de líquido cefalorraquidiano que ocorre dentro da membrana aracnoide devido à divisão ou duplicação desta estrutura. O objetivo desse estudo retrospectivo é relatar a ocorrência dessa condição em 26 cães, assim como descrever os aspectos de imagem pela tomografia computadorizada e ressonância magnética e correlacionar com os sinais clínicos. No estudo observamos a prevalência em machos, em raças de pequeno porte, com predomínio de Pinscher miniatura e Shih Tzu, com idade variando de dois meses a nove anos. Os principais sinais neurológicos observados nestes animais foram crises epiléticas e ataxia cerebelar. Foi possível concluir que em 17 cães o cisto aracnoide quadrigeminal foi considerado um achado incidental, em seis cães essa condição foi considerada a causa determinante dos sinais clínicos, e em três cães alguns sinais estavam associados com o cisto aracnoide, porém esses animais apresentaram sinais clínicos relacionados a outros sítios de lesão intracraniana.

ABSTRACT: Arachnoid cysts are accumulations of cerebrospinal fluid that occur within the arachnoid membrane due to the splitting or duplication of this structure. The aim of this retrospective study is to report the occurrence of this condition in 26 dogs, as well as to describe the findings of computed tomography imaging and magnetic resonance image scans and to correlate these with the clinical signs. A prevalence of the condition was observed in males, predominantly in the small breeds Miniature Pinscher and Shih Tzu, with age raging from 2 months to 9 years. The mainly clinical signs observed in these dogs were seizures and cerebellar ataxia. The study concluded that in 17 dogs the quadrigeminal arachnoid cyst was regarded as an incidental finding, in 6 dogs this condition was regarded as the determinant cause of the clinical signs, and in 3 dogs some clinical signs were associated with arachnoid cyst, but they also presented clinical signs involving others sites of intracranial lesion.

Abstract: After the discovery of Roentgen rays, in 1895, different studies were made, discovering the injurious effects that handling this type of ionizing radiation entails, depending on the amount of radiation(1), the absorbed dose and the sensitivity of the tissues to the radiation. These side-effects could be dermatitis, anemias, and hemophilias and in other cases some scientists were mutilated of parts of their body due to necrosis. (2) The effects that caused the ionizing radiations with protective material and equipment for the operator and the patient, such as termoluminiscense dosimeters and termoluminiscense reading equipment were studied. It was observed that annual limits of dose constitute a fundamental guideline in protection of the ionizing radiations. Current limits of dose are mentioned in the NOM-229-SSA 1-2002, as well as in the General Regulation of Radiologic Security. The objectives of the present study were to quantify the absorbed dose for patients and for the occupational exposed personnel (POE) and physical area, according to NOM-229-SSA 1-2002, and also to evaluate if the intraoral and extraoral X-rays in dentistry are an important risk within the exposure to ionizing radiations.

Resumen: Después del descubrimiento de los rayos Roentgen, en el año de 1895, se realizaron diversos estudios, los cuales llevaron al conocimiento de los efectos nocivos que conlleva manejar este tipo de radiación ionizante, dependiendo de la cantidad de radiación, de la dosis absorbida y de la sensibilidad del tejido frente a la radiación.(1) Estos efectos secundarios pueden ir desde dermatitis o anemias, llegando en casos graves a hemofilias y en otros casos incluso llevó a algunos de los científicos a la mutilación de partes del cuerpo debido a necrosis.(2) Se estudiaron los efectos que ocasionan las radiaciones ionizantes con material y equipo que sirven como protección para el operador y el paciente, tales como dosímetros termoluminiscentes, equipo lector termoluminiscente y portadosímetros. Entre los resultados se observó que los límites anuales de dosis constituye una medida fundamental en la protección frente a las radiaciones ionizantes. Los límites de dosis actualmente en vigor se enuncian en la NOM-229-SSA 1-2002 así como en el Reglamento General de Seguridad Radiológica, de igual forma las medidas de protección necesarias para pacientes y operadoras embarazadas y niños. Los objetivos del presente estudio fueron cuantificar la dosis absorbida tanto para pacientes como para el personal ocupacionalmente expuesto (POE) y área física, de acuerdo a la NOM-229-SSA 1-2002, así como evaluar si las radiografías intraorales y extraorales utilizadas en odontología implican o no un riesgo importante dentro de la exposición a radiaciones ionizantes.

O trabalho foi conduzido com o objetivo de se avaliar o valor nutritivo das silagens de capim-elefante com adição de 0, 12, 24, 36 e 48% de bagaço de caju (subproduto da agroindústria de suco de caju). Utilizou-se o delineamento inteiramente casualizado com quatro repetições. Após 82 dias, os silos foram abertos e coletadas amostras para determinação dos teores de matéria seca (MS), proteína bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA), hemicelulose (HEM), pH e níveis de N-NH3 das silagens. A adição de bagaço de caju (BC) diminuiu os valores de pH e N-NH3 e elevou os teores de PB das silagens. Os teores de FDA e HEM não diferiram entre os tratamentos. Concluiu-se que o bagaço de caju melhora o valor nutritivo da silagem e proporciona melhor conservação da massa ensilada.

This trial was conducted with the objective of evaluating the nutritive value of the silage of elephantgrass by the addition of 0, 12, 24, 36 and 48% of cashew bagasse (by-product of the cashew juice agro-industry). A completely randomized design with four replicates was used. After 82 days, the silos were opened and samples were collected for determination of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (HEM), pH and levels of N-NH3 of the silage. The addition of the cashew bagasse (BC) decreased the pH and N-NH3 values and increased the PB grade of the silage. The level of ADF and HEM did not change in function of different additions. It was concluded that the cashew bagasse improves the nutritive value of the silage and provides better conservation of silage.