Soroprevalência de anticorpos anti-Neospora caninum em cães da cidade de Cuiabá, Estado de Mato Grosso

Abstract

ResumoO presente avaliou a prevalência de anticorpos anti-Neospora caninum em 406 cães da cidade de Cuiabá, Estado de Mato Grosso pela Reação de Imunofluorescência Indireta (RIFI) com ponto de corte na diluição inicial de 1:50. Foram observados 27 cães positivos (6,6%, IC95% 4,6-9,6%) com títulos variando entre 50 e 1600. Segundo a raça estudada, a maior frequência foi observada para cães Pit Bull onde 4 cães (16,7%) foram positivos (P=0,06). Não houve diferença significativa entre a soropositividade e a faixa etárias dos cães. Dos cães positivos, 10 eram fêmeas (5,6%) e 17 (7,5) eram machos (P > 0.05), 7 (9,0%) se alimentavam de ração e 20 (6,1%) de alimentação caseira. Variáveis relacionadas ao ambiente demonstraram que dentre os positivos 15 (7,5) tinham acesso a rua, 21 (7,5%) residiam em casa próximas a terrenos baldios, 20 (6,2%) em casas muradas e 20 (6,8) em casas que apresentavam roedores no quintal. Nenhuma das variáveis apresentou associação significativa (P > 0,05). Os resultados do presente estudo demonstram uma baixa prevalência de anticorpos anti-N. caninum na população canina da cidade de Cuiabá e as diversas variáveis estudadas não se apresentaram associadas à infecção. Ressalta-se a menor prevalência de anticorpos anti-N. caninum nas áreas urbanas do Brasil. Palavras-chave: Neospora caninum, cão, anticorpos, prevalência, Cuiabá AbstractThe present study evaluated the prevalence of anti-Neospora caninum antibodies in 406 dogs from Cuiabá city, Mato Grosso State by means Immunofluorescence Assay (IFA) with cut-off at the initial dilution of 1:50. Twenty seven dogs were positive (6.6%, 95% CI%: 4.6-9.6%) with titers of antibodies ranging between 50 and 1600. According to the breed, Pit Bull dogs were the most frequent where 4 dogs (16.7%) were positive (P=0.06). There was no difference between positivity and age of dogs. From the positive dogs, 10 were females (5.6%) and 17 were males (7.5%), 7 dogs (9.0%) fed commercial ration and 20 (6.1%) homemade food (P > 0.05). Environmental variables showed that 15 positive dogs (7.5%) had access to the street, 21 positive dogs (7.5%) lived near to the wasteland, 20 (6.2%) lived in walled house and 20 (6.8%) had contact with rodents in house backyard. None of environmental variables had significant associations (P < 0.05). The results of the present study demonstrate a low prevalence of anti-N. caninum antibodies in canine population from Cuiabá city and the analyzed variable did not presented association for infection. The study noteworthy the lower prevalence of anti-N. caninum antibodies in urban area from Brazil.

Seroprevalence and incidence of Toxoplasma gondii and Neospora caninum infection in naturally exposed domestic dogs from a rural area of São Paulo state, Brazil

“…This exposure must have been increased Most of the dogs that were seropositive for N. caninum were also between four and nine years old; however, there was no significant association between age group and the serological results (Table 2), similar to other studies (Jesus et al, 2006;Melo et al, 2012). Seropositive males were also more prevalent than seropositive females in the 1 st and 2 nd collections, but there was no significant association, similar to other studies (Jesus et al, 2006;Melo et al, 2012;Constantino et al, 2016). In only one study, seropositive males were significantly more prevalent than seropositive females (Mascolli et al, 2015).…”

Toxoplasma gondii and Neospora caninum in dogs from the state of Tocantins: serology and associated factors

“…In the present study, taking into consideration the ELISA (43.1%) and IFAT (30.4%) test results, a higher frequency of antibodies against N. caninum was observed than in other studies conducted in different regions of Brazil (DANTAS et al, 2013;LANGONI et al, 2013;LOPES et al, 2011;MELO et al, 2012;MINERVINO et al, 2012;SICUPIRA et al, 2012;VALADAS et al, 2010). Additionally, no difference in the infection levels between rural and urban areas was observed, thus corroborating the findings of Valadas et al (2010).…”

“…Similar data were reported in previous studies (AGUIAR et al, 2006;CUNHA et al, 2008;FERNANDES et al, 2004;MINERVINO et al, 2012). However, Azevedo et al (2005), Bresciani et al (2007), Dantas et al (2013), Langoni et al (2013) and Melo et al (2012) did not find any correlation between age and the presence of anti-N. caninum antibodies. The IFAT results did not show any positive association with N. caninum infection, although they demonstrated that the dogs were more prone to becoming infected as they grew older.…”

“…Lopes et al (2011), Azevedo et al (2005), Sicupira et al (2012) and Langoni et al (2013) did not find any association between N. caninum infection and gender or breed, thus suggesting that there is no predisposition according to breed or gender susceptibility in relation to occurrences of canine neosporosis. On the other hand, Melo et al (2012) observed high frequency of seropositivity to N. caninum in purebred dogs, although no statistical association was found.…”

Prevalence of Neospora caninum and Toxoplasma gondii antibodies in dogs in the municipality of Poconé, state of Mato Grosso, Brazil

“…Information about the epidemiology of neosporosis and toxoplasmosis has been reported in several places in Brazil, proving the widespread circulation of these protozoans (Acosta et al, 2016;Brasil et al, 2018;Cerqueira-Cézar et al, 2017;Langoni et al, 2014). The presence of anti-N. caninum antibodies has also been reported in different animals, including cattle and dogs, in the state of Mato Grosso (Benetti et al, 2008;Benetti et al, 2009;Boa Sorte et al, 2015;Melo et al, 2012;Rodrigues et al, 2016). In the Pantanal wetlands, equids have been found seropositive for both N. caninum and T. gondii (Borges et al, 2017).…”