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Riccardo Paolo Lia, Yasen Mutafchiev, Vincenzo Veneziano, Alessio Giannelli, Francesca Abramo, Mario Santoro, Maria Stefania Latrofa, Cinzia Cantacessi, Coralie Martin, Domenico Otranto, Andrea Bertuglia, Barbara Riccio
Equids can be infected by a range of skin-dwelling filarial nematodes, including four species of the genus Onchocerca. Current literature on equine onchocercosis is fragmentary and often limited to isolated case reports. The present study aimed to describe a clinical case of equine onchocercosis caused by Onchocerca boehmi (Supperer, 1953) (syn. Elaeophora boehmi) in an 8-year-old gelding Belgian show jumper from northern Italy. The horse was presented with a firm and painless mass on the proximal third of the right metacarpal region...
January 2017: Parasitology Research
Felix Bosch, Ralph Manzanell, Alexander Mathis
Twenty-seven species of the genus Onchocerca (Nematoda; Filarioidea) can cause a vector-borne parasitic disease called onchocercosis. Most Onchocerca species infect wild and domestic ungulates or the dog, and one species causes river blindness in humans mainly in tropical Africa. The European red deer (Cervus e. elaphus) is host to four species, which are transmitted by blackflies (simuliids) or biting midges (ceratopogonids). Two species, Onchocerca flexuosa and Onchocerca jakutensis, produce subcutaneous nodules, whereas Onchocerca skrjabini and Onchocerca garmsi live free in the hypodermal serous membranes...
August 2016: International Journal for Parasitology. Parasites and Wildlife
Bronwyn Campbell, Helder Cortes, Giada Annoscia, Alessio Giannelli, Antonio Parisi, Maria Stefania Latrofa, Filipe Dantas-Torres, Luís Cardoso, Domenico Otranto
BACKGROUND: Of increasing importance to the medical and veterinary communities is the zoonotic filarioid nematode Onchocerca lupi. Onchocercosis, thus far found in wolves, dogs, cats and humans, is diagnosed via skin snips to detect microfilariae and surgical removal of adults from the eye of the host. These methods are time-consuming, laborious and invasive, highlighting the need for new tools for the diagnosis of O. lupi in susceptible hosts. Symptoms related to the presence of the adults in the eye can range from none apparent to severe, including blindness...
2016: Parasites & Vectors
Poliana Tudor, Mihai Turcitu, Cosmin Mateescu, Filipe Dantas-Torres, Niculae Tudor, Florica Bărbuceanu, Lavinia Ciuca, Ioana Burcoveanu, Dumitru Acatrinei, Laura Rinaldi, Romanița Mateescu, Adina Bădicu, Iuliana Ionașcu, Domenico Otranto
Onchocerca lupi is a filarial nematode, which infects the scleral conjunctival tissue of dogs, wolves and cats. Whilst adult nematodes localize in the conjunctive tissue of sclera or in the retrobulbar, microfilariae are found in the skin, and they are rarely diagnosed in asymptomatic animals. Since the first report of human ocular infection 5 years ago, up to 10 zoonotic cases have been identified in patients worldwide. We report, for the first time in Romania, three cases of canine ocular onchocercosis in dogs...
February 2016: Parasitology Research
Bruno B Chomel
Since the middle of the 20th century, pets are more frequently considered as "family members" within households. However, cats and dogs still can be a source of human infection by various zoonotic pathogens. Among emerging or re-emerging zoonoses, viral diseases, such as rabies (mainly from dog pet trade or travel abroad), but also feline cowpox and newly recognized noroviruses or rotaviruses or influenza viruses can sicken our pets and be transmitted to humans. Bacterial zoonoses include bacteria transmitted by bites or scratches, such as pasteurellosis or cat scratch disease, leading to severe clinical manifestations in people because of their age or immune status and also because of our closeness, not to say intimacy, with our pets...
2014: Animals: An Open Access Journal From MDPI
Masako Fukuda, Shigehiko Uni, Yasushi Otsuka, Yuki Eshita, Jun Nakatani, Kazuhiko Ihara, Yasuji Yoshikawa, Mizuki Goto, Sakuhei Fujiwara, Rosli Ramli, Mohd Sofian Azirun, Hiroyuki Takaoka
A case of zoonotic onchocercosis has been found in a resident who lived in Iizuka City, Fukuoka Prefecture, Japan for some time. A 24-year-old male developed a painful nodule on the middle finger of his right hand. The nodule was surgically removed from the vagina fibrosa tendinis of the finger at Beppu Medical Center, Beppu City, Oita Prefecture in 2012. The causative agent was identified as a female Onchocerca dewittei japonica based on its histopathological characteristics. The identity of the filarioid has been confirmed by sequencing the cox1 gene...
December 2015: Parasitology International
Shigehiko Uni, Masako Fukuda, Takeshi Agatsuma, Odile Bain, Yasushi Otsuka, Jun Nakatani, Makoto Matsubayashi, Masashi Harada, Hasmahzaiti Omar, Rosli Ramli, Rosli Hashim, Mohd Sofian Azirun, Hiroyuki Takaoka
Human zoonotic onchocercosis is caused by Onchocerca dewittei japonica, parasitic in wild boars (Sus scrofa leucomystax) in Japan. Previously, microfilariae longer than those of Onchocerca dewittei japonica were observed in skin snips from wild boars during the study of O. dewittei japonica. Moreover, the third-stage larvae (L3) of these longer microfilariae were obtained from the blackfly Simulium bidentatum after experimental injections. Based on morphometric and molecular studies, similar L3 were found in blackflies during fieldwork in Oita, Japan...
December 2015: Parasitology International
Anastasia Th Komnenou, Angelos L N Thomas, Elias Papadopoulos, Alex F Koutinas
OBJECTIVE: Canine ocular onchocercosis may represent an important ocular disease with zoonotic potential and widespread geographical distribution. An uncommon localization of Onchocerca lupi adult worm in the anterior chamber of the eye is described for the first time. ANIMAL STUDIED: A 4-year-old, intact, male, mixed-breed dog was admitted with profuse lacrimation and severe squinting. On the right eye, there were mucopurulent discharge, chemosis, and all typical signs of anterior uveitis which were attributed to the presence of a moving filarial worm within the anterior chamber...
April 30, 2015: Veterinary Ophthalmology
Domenico Otranto, Alessio Giannelli, Maria S Latrofa, Filipe Dantas-Torres, Nicole Scotty Trumble, Matt Chavkin, Gavin Kennard, Mark L Eberhard, Dwight D Bowman
Infections with Onchocerca lupi nematodes are diagnosed sporadically in the United States. We report 8 cases of canine onchocercosis in Minnesota, New Mexico, Colorado, and Florida. Identification of 1 cytochrome c oxidase subunit 1 gene haplotype identical to 1 of 5 from Europe suggests recent introduction of this nematode into the United States.
May 2015: Emerging Infectious Diseases
Domenico Otranto, Alessio Giannelli, Nicole Scotty Trumble, Matt Chavkin, Gavin Kennard, Maria Stefania Latrofa, Dwight D Bowman, Filipe Dantas-Torres, Mark L Eberhard
BACKGROUND: Onchocerca lupi, a filarioid of zoonotic concern, infects dogs and cats causing ocular lesions of different degrees, from minor to severe. However, infected animals do not always display overt clinical signs, rendering the diagnosis of the infection obscure to the majority of veterinarians. Canine onchocercosis has been reported in the Old World and the information on its occurrence in the United States, as well as its pathogenesis and clinical management is still meagre. This study reports on the largest case series of O...
2015: Parasites & Vectors
Domenico Otranto, Alessio Giannelli, Nicole Scotty Trumble, Matt Chavkin, Gavin Kennard, Maria Stefania Latrofa, Dwight D Bowman, Filipe Dantas-Torres, Mark L Eberhard
BACKGROUND: Onchocerca lupi, a filarioid of zoonotic concern, infects dogs and cats causing ocular lesions of different degrees, from minor to severe. However, infected animals do not always display overt clinical signs, rendering the diagnosis of the infection obscure to the majority of veterinarians. Canine onchocercosis has been reported in the Old World and the information on its occurrence in the United States, as well as its pathogenesis and clinical management is still meagre. This study reports on the largest case series of O...
December 2015: Parasites & Vectors
Shigehiko Uni, Masako Fukuda, Yasushi Otsuka, Nobuo Hiramatsu, Kenichi Yokobayashi, Hiroshi Takahashi, Susumu Murata, Kenji Kusatake, Eishin Morita, Haruhiko Maruyama, Hideo Hasegawa, Kuninori Shiwaku, Rosli Ramli, Mohd Sofian Azirun, Hiroyuki Takaoka
BACKGROUND: Zoonotic infections with Onchocerca species are uncommon, and to date only 25 clinical cases have been reported worldwide. In Japan, five previous zoonotic infections were concentrated in Oita, Kyushu (the southern island), with one previous case in Hiroshima in the western part of Honshu (the main island). The causative agent in Japan was identified as Onchocerca dewittei japonica Uni, Bain & Takaoka, 2001 from Japanese wild boars (Sus scrofa leucomystax Temminck, 1842). Here we report two infections caused by a female and male O...
2015: Parasites & Vectors
Delia Franchini, Alessio Giannelli, Giancarlo Di Paola, Helder Cortes, Luís Cardoso, Riccardo Paolo Lia, Bronwyn Evelyn Campbell, Filipe Dantas-Torres, Diana Lenoci, Eyad Abu Assad, Mario Ricciardi, Carmela Valastro, Leonardo Cavaliere, Antonio Di Bello, Domenico Otranto
Onchocerca lupi, a zoonotic nematode infecting the eyes of carnivores, has been increasingly reported in dogs from Europe and the USA. In order to improve the current status of knowledge on this neglected filarioid, diagnostic imaging tools (i.e., ultrasound scan, computed tomography and magnetic resonance imaging) are herein used to diagnose canine onchocercosis in two dogs, which scored positive for O. lupi microfilariae at the skin snip test and to assess the anatomical location of the nematode within the ocular apparatus...
June 16, 2014: Veterinary Parasitology
Hatice Deniz Ilhan, Aylin Yaman, Yasuyuki Morishima, Hiromu Sugiyama, Maki Muto, Hiroshi Yamasaki, Hideo Hasegawa, Banu Lebe, Meltem Soylev Bajin
Onchocerpa lupi was first isolated from a wolf in Russia. Since then, canine ocular onchocercosis has been increasingly reported, particularly in Europe and the United States. It is thought that blackflies and midges are the vectors of transmission, and it is possible that these vectors could transmit the parasite to humans. The first human case of O. lupi in Turkey was reported in 2011. In this report we present the third human case of O. lupi infection in Turkey. Our patient was a 28-year-old male who displayed a painless, immobile mass under the conjunctiva...
September 2013: Acta Parasitologica
Amber L Labelle, Carol W Maddox, Joshua B Daniels, Saraswathi Lanka, Therese E Eggett, Richard R Dubielzig, Philippe Labelle
Canine ocular onchocerciasis has a worldwide distribution and has been associated in Europe with Onchocerca lupi based on morphologic and molecular analysis. In the United States, canine ocular onchocerciasis is reportedly associated with Onchocerca lienalis. This association is based solely on histopathologic examination of ocular tissues. The purpose of this study was to use molecular analysis of formalin-fixed, paraffin-embedded canine ocular tissue to determine the genetic identity of Onchocerca associated with canine ocular onchocerciasis in the United States...
March 31, 2013: Veterinary Parasitology
Federico Morandi, Andreas Krueger, Serena Panarese, Giuseppe Sarli, Ranieri Verin, Sandro Nicoloso, Cinzia Benazzi, Roberta Galuppi
Onchocercosis is a vector-transmitted parasitic disease involving wild and domestic ungulates, humans, and dogs. Red deer (Cervus elaphus) host numerous Onchocerca spp. which have precise anatomic sites in the host and two species, Onchocerca flexuosa Wedl, 1856 and Onchocerca jakutensis Guba-now, 1964, are found inside subcutaneous nodules. Between September and November 2007, subcutaneous nodules were observed on both thighs in shot red deer of a Tuscany population. We observed cystic structures, surrounded by a fibrous capsule, containing nematodes...
October 2011: Journal of Wildlife Diseases
Domenico Otranto, Nermin Sakru, Gabriella Testini, Vuslat P Gürlü, Konuralp Yakar, Riccardo P Lia, Filipe Dantas-Torres, Odile Bain
In the past decades, cases of canine ocular onchocercosis have been reported worldwide, particularly in the United States and Europe. Onchocerca lupi, originally described from a wolf, has been implicated in some of these cases, and its zoonotic role has been hypothesized on the basis of the reexamination of two cases of human ocular onchocerciasis. In the present study, we describe, for the first time, the occurrence of O. lupi in the subconjunctival region of the human eye in a patient from Turkey. The nematode was identified as O...
January 2011: American Journal of Tropical Medicine and Hygiene
No abstract text is available yet for this article.
June 1946: Puerto Rico Journal of Public Health and Tropical Medicine
P Faísca, R Morales-Hojas, M Alves, J Gomes, M Botelho, M Melo, A Xufre
Onchocercosis is a newly recognized disease in dogs that has been reported with higher frequency in Europe and in the United States. We report a case of a 3-year-old male mongrel stray dog from the Algarve region (South Portugal) who had a retrobulbar granuloma containing a filaroid nematode of the genus Onchocerca. A gravid adult female parasite was embedded in a granulomatous inflammation adjacent to the sclera beyond the retina. The parasite was 191 to 267 mum in diameter (mean = 225 mum), surrounded by a cuticule and owing a uterus that was filled with small unsheated microfilariae...
March 2010: Veterinary Ophthalmology
Zlatko Marusić, Tomislav Stastny, Iva Kirac, Dagny Stojcević, Bozo Kruslin, Davor Tomas
A 31-year-old man with a history of intravenous drug abuse presented with an inflamed subcutaneous nodule in his left thigh. The nodule measured up to 1.2 cm in largest diameter. Under the clinical impression of an inflamed epidermal cyst or a subcutaneous abscess, surgical excision was performed. Histopathologic examination of the nodule and subsequent polymerase chain reaction (PCR) analysis revealed the presence of the helminth Dirofilaria (D.) repens, a member of the family Filarioidea. Dirofilariasis is a parasitosis caused by D...
2008: Acta Dermatovenerologica Croatica: ADC
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