The aim of this study was to evaluate the clinical and manometric results three different doses botulinum toxin two methods injection for treatment chronic idiopathic anal fissure.Sixty-nine patients with fissure were included in a non-randomized, prospective trial intrasphincteric toxin. All reported postdefecatory pain lasting more than months. Scoring systems developed pain, bleeding, defecatory difficulty. Maximum resting squeeze pressures determined before one month after treatment....

Angiostrongylus cantonensis, the rat lungworm, is one etiological agent of eosinophilic meningoencephalitis in humans. This zoonosis frequently found Asia and, more recently, North America, Caribbean Island and northeastern South America. Until now, research A. cantonensis southern, southeastern regions Brazil has been natural infections only terrestrial freshwater intermediate snail hosts (Achatina fulica, Sarasinula marginata, Subulina octona, Bradybaena similaris Pomacea lineate). In this...

Abstract Aplectana comprises species of gastrointestinal helminths commonly found parasitizing amphibians and reptiles worldwide. However, most the genus are described based only on morphological traits. During helminthological surveys, we nematodes identified as pella hylid frog Osteocephalus cabrerai from same locality original description. We provided first nucleotide sequence ribosomal gene 18S rDNA for established species' phylogenetic position between representatives Cosmocercidae. A...

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Morphological descriptions of Dirofilaria immitis are scarce. For this reason, we carried out morphological studies using both light and scanning electron microscopy for filaroid species. Morphometric data were compatible with previous D. immitis, but several anatomical structures described by the first time, such as details cuticular striations, positioning amphids, visualization anal vulvar opening, deirids, lateral line, pair phasmids in posterior end females, a small latero-terminal...

Absctract Eustrongylides spp. nematodes have birds as final hosts and uses other vertebrates intermediate/paratenic host (fish, amphibians reptiles) zoonotic potential. In amphibians, the larvae may be located in subcutaneous tissues, liver mesentery, between muscle fibres, especially lower limbs. Rhinella marina, which is widely observed Brazil, has exhibited complex diversity its helminth fauna, reflecting unique habitat of Amazon biome. For first time, this study describes morphological...

The nematode parasites of Rhinella marina include species the genus Rhabdias (Rhabdiasidae: Rhabditoidea). present study describes paraensis sp. nov., which parasitizes lungs R. in Brazilian Amazonia. Of more than 70 known this genus, 18 are bufonids, which, eight Neotropical. new described here is similar to alabialis absence lips different by presence conspicuous cephalic papillae. We describe details four rows pores, distributed equally along whole length body and connected with...

Dirofilaria immitis and Acanthocheilonema reconditum are common parasites in dogs but have also been reported parasitizing humans. The differential diagnosis epidemiological evaluation of these zoonoses important to the development efficient public health policies control strategies. purpose this study was carry out an survey by using molecular methods for specific identification filarid domestic Marajó mesoregion, State Pará (PA), Brazil. A total 418 canine blood samples from mesoregion...

Calodium hepaticum (syn. Capillaria hepatica) is a trichurid nematode that parasitizes the hepatic parenchyma of rodents and other mammals. Infections in humans are rare, although they have been reported worldwide. A number factors contribute to distribution this zoonosis, particularly presence dense populations associated with relatively poor urban environments, such as those found parts northern Brazilian city Belém eastern Amazon Basin. This study quantifiedCalodium infections commensal...

Exposure to parasites is considered be an important factor in the development of many diseases and histopathologies which are result parasite–host interaction. The present study evaluated impact natural infection by larvae Ortleppascaris sp. (Nematoda: Ascaridida) liver cane toad Rhinella marina (Linnaeus, 1758). Larvae were encysted nodules delimited collagenous fibers fibroblasts or freely within hepatic parenchyma, provoking a clear response from host. histological examination revealed...

Abstract Nematodes of the genus Aplectana Railliet & Henry, 1916 are common parasites digestive tract amphibians and reptiles in Neotropical region. During a parasite survey on Boana boans (Linnaeus, 1758), we found specimens nematodes with characteristics. We observed set characteristics that differs species our study from its congeners, present describes new B. using light microscopy scanning electron microscopy. pella n. sp. has lateral alae somatic papillae males females; have equal...

The family Nematotaeniidae, tapeworms commonly found in the small intestines of amphibians and reptiles, includes 27 recognised species distributed among four genera: Bitegmen Jones, Cylindrotaenia Jewell, Distoichometra Dickey Nematotaenia Lühe. taxonomy these cestodes is poorly defined, due part to difficulties observing many anatomical traits. This study presents describes a new genus nematotaeniid parasite cane toads (Rhinella marina) from eastern Brazilian Amazonia. were collected...

A new species of Procamallanus Baylis, 1923 was found as a parasite the fish Astronotusocellatus (Agassiz, 1831) from lake in Jardim Botânico Bosque Rodrigues Alves, Belém, Brazil. Procamallanusspiculastriatus sp. n. has smooth buccal capsule and well-developed basal ring that is armed with four sclerotized tooth-like structures. The male similar to two are known Brazilian fish, P.peraccuratus Pinto, Fábio, Noronha & Rolas, 1976, P.annipetterae Kohn Fernandes, 1988, by absence...

Plagioscion squamosissimus (Heckel 1840), a fish endemic to the Amazon Basin and commonly known as “silver croaker”, plays an important role in ecology economy of Pará State, Brazil. Knowledge host-parasite relationships is understanding parasites control natural host populations. This work describes histopathological aspects caused by several common intestinal found during helminthological survey northern We observed high prevalence helminth infection, especially J3 nematode juveniles...

Specimens of the genus Gongylonema were collected from gastric mucosa rodents Rattus rattus Linnaeus, 1758, and norvegicus Berkenhout, 1769, in urban areas Belém, Pará, eastern Brazilian Amazon. The helminths processed for analysis using light microscopy scanning electron (SEM) techniques presented taxonomic characteristics species neoplasticum. SEM analyses revealed presence 2 developed buccal plates (1 dorsal, 1 ventral), also called interlabia, with a prominent bifurcated ventral plaque....

Abstract Sphincterodiplostomum is a monotypic genus of diplostomid digeneans that parasitize fish-eating birds in the neotropics. The type species musculosum has unique, dorsal, tubular invagination opisthosoma with muscular sphincter. Whereas larvae S. are relatively commonly reported Neotropical fish helminth surveys, adult specimens from rarely collected. Prior to our study, no DNA sequence data for were available. Our molecular and morphological study mature immature three one...

Abstract Schrankiana are gastrointestinal parasites of anurans, distributed throughout Central and South America. formosula inconspicata some the most commonly reported species parasitising anurans from Brazil, morphological differences between them unclear. In present study, we redescribed S. based on a re-examination type series newly collected material frog Leptodactylus pentadactylus in state Amapá, Brazil. Additionally, re-examined , propose it as junior synonym . We provide detailed...

N Bertiella is a genus of the Anoplocephalidae family that includes parasites mammals can infect humans.N The specific identification based on morphological features and geographical localization infection.N Molecular approaches with phylogenetic relationships genetic sequences are tools be used in similar cases.

Mesocoelium lanfrediae sp. nov. (Digenea: Mesocoeliidae) inhabits the small intestine of Rhinella marina (Amphibia: Bufonidae) and is described here, with illustrations provided by light, scanning electron microscopy molecular approachs. M. presents typical characteristics genus, but morphometrically morphologically different from species previously. The main diagnostic are (i) seven pairs regularly-distributed spherical papillae on oral sucker, (ii) ventral sucker outlined four distributed...

Abstract Aspidogastreans are commonly found infecting freshwater and marine molluscs, teleosts fishes turtles. The subclass comprises four families – Rugogastridae Schell 1973, Stichocotylidae Faust & Tang 1936, Multicalycidae Gibson Chinabut 1984 Aspidogastridae Poche 1907 it is characterized by the presence of a ventral adhesive disc divided into rows alveoli. In current work, using light scanning electron microscopy molecular approaches, new species genus Rohdella Chinabut, 1984,...

Two new lung-dwelling nematode species of the genus Rhabdias Stiles et Hassall, 1905 were discovered in Caxiuanã National Forest, Pará state, Brazil. galactonoti sp. n. was found a dendrobatid frog Adelphobates galactonotus (Steindachner). The is characterised by regularly folded inner surface anterior part buccal capsule seen apical view, flask-shaped oesophageal bulb and narrow, elongated tail. stenocephala from two leptodactylid frogs, Leptodactylus pentadactylus (Laurenti) (type host) L....