scholarly journals Ocular toxocariasis caused by toxocara canis in an adult woman. Case report

Case reports ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 4-9 ◽  
Author(s):  
German Santiago Barahona Botache ◽  
Mario Javier Olivera
Keyword(s):  
Case Report ◽  
Toxoplasma Gondii ◽  
Taenia Solium ◽  
Toxocara Canis ◽  
Adult Woman ◽  
Toxocara Cati ◽  
Ocular Toxocariasis ◽  
Pars Planitis

Introducción. La toxocariasis es una zoonosis producida por las larvas de los nematodos Toxocara canis y Toxocara cati, parásitos intestinales de los cánidos y los félidos, respectivamente.Presentación del caso. Paciente femenino de 22 años de edad, procedente de Caquetá, Colombia, con un cuadro de 3 meses de evolución con pérdida de visión en ojo izquierdo, acompañada de dolor ocular, diplopía, fotofobia y ojo rojo bilateral, quien presenta desprendimiento de retina en ojo izquierdo diagnosticado por ecografía. La mujer asiste a oftalmología, donde se hace diagnóstico diferencial con retinoblastoma y pars planitis. Se inicia manejo sintomático con corticoides orales y tópicos, con mejoría de la sintomatología, pero persistencia de pérdida de la agudeza visual.Discusión. Al revisar historial de antecedentes socioeconómicos, la paciente convive con perros y gatos, por lo que se piensa en toxocariasis ocular. En el cuadro hemático se observa ligera leucocitosis y linfocitosis, sin eosinofilia. La determinación de anticuerpos anti-Toxoplasma gondii y anti-cisticerco de Taenia solium resultaron negativas, al igual que el VDRL. El test de ELISA para T. canis fue positivo, con unos títulos IgG de 1:64 (positivo ≥1:32, especificidad >90%). Se inicia manejo con corticoide oftálmico, sistémico, albendazol y vitrectomía. Con la intervención quirúrgica se libera banda vítrea, logrando la desaparición de la diplopía, pero persiste granuloma periférico residual, el cual será intervenido por oftalmología.Conclusiones. Dada la posibilidad de ser confundida con un retinoblastoma —una neoplasia maligna que puede requerir la enucleación del ojo—, el conocimiento de esta forma de presentación de la toxocariasis es de suma importancia para los clínicos. 

scholarly journals Adult Ocular Toxocariasis Mimicking Ciliary Body Malignancy

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Ahmad M. Mansour ◽  
Bachir Abiad ◽  
Fouad I. Boulos ◽  
Ramzi Alameddine ◽  
Fadi C. Maalouf ◽  
...  
Keyword(s):  
Case Report ◽  
Local Excision ◽  
Rapid Growth ◽  
Ciliary Body ◽  
Inflammatory Cells ◽  
Toxocara Canis ◽  
Unusual Presentation ◽  
Medial Rectus ◽  
Ocular Toxocariasis ◽  
History Of

Purpose. To discuss an unusual presentation of ocular toxocariasis.Methods. Case report.Results. A 40-year-old woman presented with decreased vision in the left eye with a long history of recurrent red eye from uveitis. Eosinophilia and positive ELISA titers forToxocara canisfavored the diagnosis of ocular toxocariasis. Over 3 months, an anterior scleral mass had a rapid growth raising the possibility of medulloepithelioma, which rarely can mimic uveitic syndromes. Surgical plan changed from local excision to enucleation. Histopathology demonstrated a large homogeneous mass of chronic inflammatory cells with inflammation of the overlying thinned out sclera, medial rectus insertion, and limbal cornea. The triad of peripheral granuloma, eosinophilia, and positive blood serology established the diagnosis of ocular toxocariasis.Conclusions. Ocular toxocariasis can mimic ocular malignancy such as medulloepithelioma in adults and rarely presents as an anterior scleral mass.

Uveitis associated with Toxocara; Clinic, Diagnosis, and Treatment

2019 ◽  
pp. 244-246
Keyword(s):  
Parasitic Infection ◽  
Vitreoretinal Surgery ◽  
Toxocara Canis ◽  
Clinical Findings ◽  
Posterior Pole ◽  
Larva Migrans ◽  
Toxocara Cati ◽  
Ocular Toxocariasis ◽  
Fluid Analysis ◽  
Ocular Larva Migrans

Ocular toxocariasis or ocular larva migrans is a parasitic infection via the ingestion of dog nematode Toxocara canis and cat nematode Toxocara cati larvae. It usually affects only one eye of the child under the age of sixteen. The most common clinical findings in ocular toxocariasis are peripheral granuloma, posterior pole chorioretinal eosinophilic granulomas, and endophthalmitis or pars planitis. It is diagnosed with clinical findings in developing countries, ELISA antibody tests, and, if necessary, intraocular fluid analysis can be made. Ocular toxocariasis must be distinguished from retinoblastoma and other congenital and inflammatory eye conditions of childhood. In treatment, besides anthelmintic agents, steroid use and vitreoretinal surgery may be needed.

scholarly journals A Sensitive, One-Way Sequential Sieving Method to Isolate Helminths’ Eggs and Protozoal Oocysts from Lettuce for Genetic Identification

Pathogens ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 624
Author(s):  
Annina R. Guggisberg ◽  
Cristian A. Alvarez Rojas ◽  
Philipp A. Kronenberg ◽  
Nadia Miranda ◽  
Peter Deplazes
Keyword(s):  
Toxoplasma Gondii ◽  
Simultaneous Detection ◽  
Toxocara Canis ◽  
Genetic Identification ◽  
Diagnostic Strategy ◽  
Toxocara Cati ◽  
Test Kit ◽  
Contaminated Food ◽  
In Vivo Testing

Different helminths and protozoa are transmitted to humans by oral uptake of environmentally resistant parasite stages after hand-to-mouth contact or by contaminated food and water. The aim of this study was to develop and validate a method for the simultaneous detection of parasite stages from fresh produce (lettuce) by a one-way isolation test kit followed by genetic identification (PCR, sequencing). Three sentinel zoonotic agents (eggs of Toxocara canis, Echinococcus multilocularis and oocysts of Toxoplasma gondii) were used to investigate the practicability and sensitivity of the method. The detection limits (100% positive results) in the recovery experiments were four Toxocara eggs, two E. multilocularis eggs and 18 T. gondii oocysts (in 4/5 replicates). In a field study, helminth DNA was detected in 14 of 157 lettuce samples including Hydatigera taeniaeformis (Syn. Taenia taeniaeformis) (four samples), T. polyacantha (three), T. martis (one), E. multilocularis (two) and Toxocara cati (four). Toxoplasma gondii was detected in six of 100 samples. In vivo testing in mice resulted in metacestode growth in all animals injected with 40–60 E. multilocularis eggs, while infection rates were 20–40% with 2–20 eggs. The developed diagnostic strategy is highly sensitive for the isolation and genetic characterisation of a broad range of parasite stages from lettuce, whereas the sensitivity of the viability tests needs further improvement.

scholarly journals ENTEROPARÁSITOS EN PERROS (Canis familiaris) Y GATOS (Felis catus) DE LA PROVINCIA DE PUNO

2013 ◽  
Vol 15 (01) ◽  
Author(s):  
FELICIANA VILCA DE DIAZ ◽  
MAXIMO MELO ANCCASI
Keyword(s):  
Toxoplasma Gondii ◽  
Canis Familiaris ◽  
Toxocara Canis ◽  
Felis Catus ◽  
Toxocara Cati ◽  
Sarcocystis Spp ◽  
Para Determinar ◽  
De Medicina ◽  
Trichuris Vulpis

<h4 class="text-primary">Resumen</h4><p style="text-align: justify;">Las mascotas que conviven con el hombre, el  perro y el gato ocupan un lugar muy especial, como amigos fieles, especialmente de los niños; sin embargo esta relación se interrumpe por la presencia de parásitos ciclozoonóticos, ocasionando múltiples enfermedades, incluso en algunos casos podrían ocasionar  la muerte, con repercusiones socioeconómicas de impacto. Por ello la necesidad de realizar esta investigación para determinar la prevalencia de entero parásitos  en estas especies, evaluándose 150 muestras fecales de perros de los distritos de Puno y Tiquillaca  y 96 de gatos del distrito de Puno, en el Laboratorio de Parasitología de la Facultad de Medicina Veterinaria y Zootecnia de la Universidad Nacional Del Altiplano Puno, considerando la variable edad, mediante los métodos: directo simple y concentración por flotación en solución de sulfato de zinc al 33.3 %, para identificar la presencia de protozoarios y helmintos entéricos. Obteniéndose los siguientes resultados: la prevalencia de entero parásitos en perros  fue de  78.6%, reportándose  protozoos como: <em>Isospora spp </em>14%, <em>Giardia canis</em> 3.3% y <em>Sarcocystis spp</em>  8.6%; según la edad 29.3 % en cachorros y 20 % en adultos. Las prevalencias para helmintos:  <em>Toxocara canis</em> 49.3%, <em>Toxascaris leonin</em>a 12%, <em>Taenia s</em>pp 15.3% y <em>Trichuris vulpis</em> 7.3%, por edad  74.6% en  jóvenes y 32% en adultos. La prevalencia en gatos fue de 61.46 % reportándose protozoarios como  <em>Isospora felis</em> 19.79%, <em>Isospora rivolta</em> 6.25% y <em>Toxoplasma gondii</em> 2.08%; con 29.17% y 18.75% para animales jóvenes y adultos; en relación a helmintos: <em>Toxocara cati</em> 53.13%, <em>Ancylostoma tubaeforme</em> 3.13% y <em>Uncinaria spp</em> 1.04%, con 64.58% y 43.75% en animales jóvenes y adultos respectivamente.</p><p style="text-align: justify;"><strong>Palabra clave:</strong> enteros parásitos, prevalencia, protozoos, helmintos, jóvenes, adultos.</p>

scholarly journals The influence of rodenticides in dissemination of endoparasites of dogs and cats

2018 ◽  
Vol 67 (3) ◽  
pp. 139
Author(s):  
M. LEFKADITIS
Keyword(s):  
Toxoplasma Gondii ◽  
Trichinella Spiralis ◽  
Toxocara Canis ◽  
Accidental Poisoning ◽  
State Agencies ◽  
Toxocara Cati ◽  
Public Health Importance ◽  
Spirocerca Lupi ◽  
Cryptosporidium Spp ◽  
Toxascaris Leonina

Mice and other rodents are well known to play an important role in the biological cycle of many parasites of pets. Among the endoparasites identified in Greece which could be transmitted to dogs and/or cats from colloquially rodents are Spirocerca lupi, Ascaridae namely Toxocara canis, Toxascaris leonina in dogs and Ancylostoma caninum, A.braziliense, Trichinella spiralis, Echinococcus granulosus, Toxoplasma gondii, Cryptosporidium spp and Leihsmania spp, while cats can be infested by Toxocara cati, Toxascaris leonina, Ancylostoma tubaeformae, A.braziliense, Aelurostrongylus abstrusus and Taenia taeniaformis, Toxoplasma gondii, Cryptosporidium spp and Leihsmania spp. The route of infection of pet includes in many cases ingestion of parasite infested rodents. A number of these parasites are also of great Public Health importance because they are causing zoonotic diseases. Because of the large numbers of rodents in some areas and their role in transmitting diseases in man and animals, rodenticide programs are performed by individuals or state agencies. Rodenticides are chemical and non-chemical compound which are used to eliminate rodents. However, attention should be paid on their use and manufacturer’s instructions should be strictly followed because of the risk of accidental poisoning of pets and children. It can be conclude that prudent rodent control is essential in the prevention of parasite infection of pets and the transmission of zoonotic parasite to humans.

Prevalence of Toxoplasma gondii and Toxocara canis among Myositis Patients in Southwest of Iran

2019 ◽  
Vol 20 ◽  
Author(s):  
Jasem Saki ◽  
Karim Mowla ◽  
Reza Arjmand ◽  
Forough Kazemi ◽  
Somayeh Fallahizadeh
Keyword(s):  
Toxoplasma Gondii ◽  
Nested Pcr ◽  
Healthy Subjects ◽  
Toxocara Canis ◽  
Control Group ◽  
Igg Antibodies ◽  
Healthy Individuals ◽  
High Prevalence ◽  
Acute Toxoplasmosis ◽  
Southwest Of Iran

Introduction: Parasitic myositis is caused by some parasites such as T. gondii and T. canis. So, the aim of the study was to evaluate the prevalence T. gondii and T. canis in patients with myositis and healthy individuals. Methods: A total of 108 samples were randomly selected as the control (54 healthy individuals) and test (54 myositis patients) groups. IgG and IgM antibodies against T. gondii and IgG antibodies against T. canis were measured by the ELISA. The detection of chronic and acute toxoplasmosis was performed by the ELISA IgG avidity. The presence of T. gondii in blood was evaluated by the nested-PCR. Results: Of 108, 33 (30.6%) cases were detected positive for IgG against T. gondii that 19 (35.2%) and 14 (25.9%) were observed in myositis patients and healthy individuals, respectively (P=0.296). Of 19 positive cases, 12 (63.2%) and 7 (36.8%) cases were detected as chronic and acute toxoplasmosis, respectively, while, all positive cases in the control group had chronic toxoplasmosis (P=0.013). One (1.9%) sample was detected positive for anti- Toxoplasma gondii IgM and two (3.7%) samples were found positive for IgG against T. canis by the ELISA that these positive cases were observed only in myositis patients (P=1.000 P=0.495, respectively). B1 T. gondii gene was amplified in 12 (63.2%) and 1 (7.1%) in myositis patients and healthy subjects (P=0.001). Conclusions: Our findings showed that there was a relatively high prevalence of acute toxoplasmosis in myositis patients in comparison with the control subjects in southwest of Iran.

Development of a low-cost copro-LAMP assay for simultaneous copro-detection of Toxocara canis and Toxocara cati

Parasitology ◽  
2021 ◽  
pp. 1-8
Author(s):  
Héctor Gabriel Avila ◽  
Marikena Guadalupe Risso ◽  
Paula Ruybal ◽  
Silvia Analía Repetto ◽  
Marcos Javier Butti ◽  
...  
Keyword(s):  
Low Cost ◽  
Lamp Assay ◽  
Toxocara Canis ◽  
Toxocara Cati

Abstract

Distribution of Toxocara infection in the environment and in definitive and paratenic hosts in Estonia

2006 ◽  
Vol 54 (3) ◽  
pp. 399-406 ◽  
Author(s):  
Heli Talvik ◽  
Epp Moks ◽  
Erika Mägi ◽  
T. Järvis ◽  
Illa Miller
Keyword(s):  
Rattus Norvegicus ◽  
Risk Group ◽  
Toxocara Canis ◽  
Toxocara Cati ◽  
Low Level ◽  
Larval Infection ◽  
Small Intestines ◽  
Paratenic Hosts ◽  
The Town ◽  
Home Territory

The aim of the study was to elucidate the distribution and possible transmission routes of Toxocara spp. infection in Estonia. Out of 454 faecal and sand samples collected from park lawns and sandpits in the town of Tartu, 19 were Toxocara positive (4.2%). Out of the 45 sandpit samples 17.8% were Toxocara positive. Cat faeces was found in 21 sandpit samples. Parasitological necropsies were performed on 41 euthanised stray dogs and 27 cats in the Tallinn Dog Home. Additionally, 13 wild free-roaming brown rats (Rattus norvegicus) were captured from the Tallinn Dog Home territory, necropsied and studied for the presence of Toxocara larvae. Toxocara canis adults were found in 14.6% of the dogs and Toxocara cati (syn. mystax) adults in the small intestines of 48.2% of the cats examined. Larval infection was detected in the kidney and liver in 5 dogs (12.2%). Our study demonstrated only low-level larval Toxocara infections in adult dogs. Toxocara larvae were not found in cats and brown rats. According to the results of this study, cats more often carry Toxocara infection than dogs. Under our conditions, stray and free-roaming cats are the main contaminators of the environment with Toxocara eggs. Children playing in sandpits are the main risk group for larval toxocarosis.

scholarly journals Neurocysticercosis presenting as bipolar disorder: a case report

2021 ◽  
Vol 34 (6) ◽  
pp. e100663
Author(s):  
Surbhi Batra ◽  
Sumit Kumar ◽  
Lokesh Singh Shekhawat
Keyword(s):  
Bipolar Disorder ◽  
Case Report ◽  
Depressive Symptoms ◽  
Affective Disorder ◽  
Postpartum Period ◽  
Bipolar Affective Disorder ◽  
Taenia Solium ◽  
Manic Episode ◽  
Symptoms And Signs ◽  
Rule Out

Neurocysticercosis is the most common neuro-parasitosis caused by the larval stage of Taenia solium. The most common manifestations include seizures and hydrocephalus. Psychiatric abnormalities are relatively rare but depressive symptoms are frequent in patients with neurocysticercosis. However, mania as a presentation is relatively rare. Pregnancy and the postpartum period are relatively vulnerable times and they can lead to reactivation of existing neurocysterci lesions. We are discussing the case of a 23-year-old female patient with neurocysticercosis leading to the reactivation of lesions in the peripartum and postpartum period leading to bipolar affective disorder. Improvement in the patient was seen with a combination of antipsychotics, antihelmintics, antiepileptics and steroids, along with improved radiological signs of neurocysterci lesions. Although neurocysticercosis is a common illness, its prevalence presenting as a manic episode is merely 2.6% and, hence, missed easily. Therefore, it is important to rule out organic aetiology in patients even with a classic presentation of bipolar affective disorder and those having any other neurological symptoms and signs.

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