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PURPOSE: To date, ten validated Arthrostoma species were reported. Here, a new hookworm species was found from Asian badger (Meles leucurus). METHODS: Nineteen hookworms (9 males and 10 females) were collected from the small intestine of two Asian badgers in Xinjiang Uygur Autonomous Region, northwestern China. The hookworms were morphologically examined according to key taxonomic characters, such as anterior extremity direction, structures of oral opening (cutting plates or teeth), vulva location, buccal capsule anatomy (integrated or formed by articulating plates), the length of spicule and gubernaculum, number of plates of buccal capsule, and presence or absence of vulvar papillae. RESULTS: The hookworm species from Asian badger, here named as Arthrostoma leucurus sp. n., was different from the previously described ten Arthrostoma species. The phylogenetic tree based on the cox1 gene showed that Arthrostoma leucurus sp. n. formed a separate clade, as a sister group to Ancylostoma and Uncinaria species. CONCLUSION: Arthrostoma leucurus sp. n., the eleven validated Arthrostoma species, was identified from Asian badger in China.

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Soil contamination by dog and cat feces can become a public health problem due to the transmission of various etiologic agents that cause zoonoses. This study aimed to verify the occurrence of geohelminths in the soil of some public square areas of the municipality of Rio Branco, Acre State, Western Brazilian Amazon. Five public squares were selected, and soil samples collection was performed from April 2014 to March 2015. The samples were processed by using the Baermann-Moraes and centrifugal-flotation methods. Geohelminths positivity was of 25% for Tox o c ara spp., 6.6% for the Ancylostomatoidea Superfamily and 1.6 for Trichuris spp.. Measures should be implemented to prevent the free access of animals to these places, as well as deworming of stray dogs and cats and the implementation of population control and policies for such animals.(AU)

A contaminação do solo por fezes de cães e gatos pode se tornar um problema de saúde pública devido à transmissão de vários agentes etiológicos que causam zoonoses. Este estudo objetivou verificar a ocorrência de geohelmintos no solo de praças públicas do município de Rio Branco, estado do Acre, Brasil. Cinco praças públicas foram selecionadas e amostras de solo foram colhidas entre abril de 2014 e março de 2015. As amostras foram processadas pelos métodos de Baermann-Moraes e centrífugo-flutuação. A positividade observada para geohelmintos foi de 25% para Tox o c ara spp., 6,6% para a Superfamília Ancylostomatoidea e 1,6% para Trichuris spp.. Medidas devem ser implementadas para prevenir a livre circulação de animais nestes locais, bem como a desverminação de cães e gatos de rua e a implementação de políticas de adoção e controle populacional de cães e gatos.(AU)

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Objetivos: Describir las características morfológicas diferenciales más relevantes de los estadios larvarios de uncinarias (Ancylostoma duodenale y Necator americanus), y S. stercoralis, para su identificación específica en laboratorio clínico convencional. Material y métodos: Estudio observacional durante julio del 2015 a agosto del 2016. Se realizaron cultivos en placa de agar de muestras fecales positivas por microscopía a larvas de nematodos o huevos de uncinaria. Las larvas desarrolladas en cultivo fueron descritas morfológicamente mediante claves, se identificaron las características morfológicas diferenciales más relevantes y se ilustraron mediante microfotografías. Resultados: Las características morfológicas más relevantes para la diferenciación específica fueron la longitud de la cavidad bucal y la prominencia del poro genital en el estadio rabditiforme; y la forma del cuerpo, el extremo terminal de la cola y el diámetro del extremo anterior del intestino en relación al esófago en el estadio filariforme. Conclusiones: Las uncinarias A. duodenale y N. americanus, y S. stercoralis pueden identificarse específicamente por microscopía óptica mediante el análisis morfológico de sus estadíos larvarios desarrollados en cultivo. Debido al requerimiento de equipos e insumos de uso común en laboratorio de microbiología, se recomienda esta metodología para uso en laboratorios clínicos convencionales. (AU)

Objectives: To determine the most relevant morphologic differences of larval stages of hookworms (Ancylostoma duodenale y Necator americanus) and S. stercoralis for their specific identification in a conventional laboratory. Methods: An observational study was carried-out between July and August 2016. Positive fecal samples at microscopy to nematode larvae or to eggs of hookworms were cultured in agar plate. Larvae that developed in culture were described morphologically using passwords. We identified the most relevant differential morphologic features and illustrated them using microphotography. Results: The most relevant morphologic features that allow differentiating these nematodes were the longitude of the oral cavity and the prominence of the genital primordium for the rabditiform larva; the shape of the body, the terminal end of the tail and the diameter of the anterior extreme of the intestine in relation to the esophagus for the filariform larvae. Conclusions: Hookworms and S. stercoralis can be specifically identified by optic microscopic examination of their larval stages developed in culture. We recommend this methodology for conventional microbiology laboratories due to the requirement of simple equipment. (AU)

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Irritable bowel syndrome (IBS) is a gastrointestinal disorder characterized by chronic abdominal pain and altered bowel habits in the absence of any organic cause. As the clinical manifestations are very diverse and associated with nonspecific symptoms, research seeking to identify organic causes to rule out IBS and to enable differential diagnosis is required. A 24-year-old man was referred to our hospital for specialized management of IBS. He had a 7-month history of intermittent epigastric and lower abdominal pain. On the basis of clinical examination, he was diagnosed with IBS and administered medication at a primary clinic. However, his symptoms did not improve after treatment. We performed capsule endoscopy at our hospital and identified a parasite (Ancylostoma duodenale) in the proximal jejunum. We therefore report a case of parasitic infection found by additional examination while evaluating symptoms associated with a previous diagnosis of refractory IBS.

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Irritable bowel syndrome (IBS) is a gastrointestinal disorder characterized by chronic abdominal pain and altered bowel habits in the absence of any organic cause. As the clinical manifestations are very diverse and associated with nonspecific symptoms, research seeking to identify organic causes to rule out IBS and to enable differential diagnosis is required. A 24-year-old man was referred to our hospital for specialized management of IBS. He had a 7-month history of intermittent epigastric and lower abdominal pain. On the basis of clinical examination, he was diagnosed with IBS and administered medication at a primary clinic. However, his symptoms did not improve after treatment. We performed capsule endoscopy at our hospital and identified a parasite (Ancylostoma duodenale) in the proximal jejunum. We therefore report a case of parasitic infection found by additional examination while evaluating symptoms associated with a previous diagnosis of refractory IBS.

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