Prevalência de hepatozoonose canina no município de Areia, Paraíba, Brasil

Abstract

A hepatozoonose canina é uma doença parasitária de caráter debilitante, imunossupressora e de difícil diagnóstico clínico. A prevalência da doença em cães já foi descrita em vários estados brasileiros, todavia na região Nordeste os estudos ainda são escassos. Em virtude disso, o trabalho objetivou determinar a prevalência da hepatozoonose canina no município de Areia, Paraíba, Brasil. Os cães foram examinados clinicamente e foram colhidas amostras de sangue circulante e periférico (ponta de orelha). Das 151 amostras analisadas, 9,3% dos cães foram positivos para Hepatozoon canis, a partir da visualização de gamontes parasitando neutróilos. O grau de parasitemia variou de leve a intenso. As alterações hematológicas observadas foram diferentes entre os animais, não apresentando padrão de resposta à infecção. A forma subclínica foi observada em 50% dos cães e os demais apresentaram sinais clínicos inespecíicos. Conclui-se que há a ocorrência da hepatozoonose em cães da área urbana do município. Além disso, os cães infectados com H. canis apresentaram alterações hematológicas e sinais clínicos inespecíicos. Palavras-chave: Epidemiologia; Hematologia; Hemoparasita; Hepatozoon canis AbstractPrevalence of canine hepatozoonosis in Areia, Paraíba, Brazil. Canine hepatozoonosis is a parasitic disease of debilitating nature. Also, it is immunosuppressive and dificult to diagnose clinically. The prevalence of the disease in dogs has been described in several Brazilian states, but studies are still scarce in the Northeast region. Accordingly, this study aimed to determine the prevalence of canine hepatozoonosis in Areia, Paraíba, Brazil. The dogs were clinically examined, and peripheral blood samples were obtained from the tip of the ear. Of the 151 dogs analyzed, 9.3% were positive for Hepatozoon canis by the demonstration of gamonts parasitizing neutrophils. The degree of parasitemia ranged from mild to intense. The observed hematological changes were different between animals and showed no pattern of response to infection. The subclinical form Biotemas, 29 (1): 175-179, março de 2016 ISSNe 2175

Hematological, clinical and epidemiological aspects of Hepatozoon canis infection by parasitological detection in dogs from the rural area of Sousa, Paraíba, Brazil

“…The prevalence of H. canis infection reported in the present study was 8.1%, which is similar to the prevalence of 9.3% reported by BERNARDINO et al (2016) in the municipality of Areia, Brejo Paraibano, but was higher than that reported by RAMOS et al (2010), 0.49% in dogs in the metropolitan area of Recife-PE. ROTONDANO et al (2010) did not found H. canis in dogs in urban areas in the municipality of Patos, in the semi-arid region of Paraíba.…”

“…From April to December 2017, 98 blood samples were collected from dogs that were at least four months old, regardless of their breed and gender, from the rural area of Sousa, Paraíba. The number of samples to be collected was calculated based on an expected prevalence of 9.3% H. canis infection, (BERNARDINO et al, 2016), confidence level of 95% and error of 5% (THRUSFIELD, 2005), resulting in 45 samples to be collected; however, 98 samples were collected for security. Blood samples (3.0 mL) were collected from the external jugular vein of each animal, placed into tubes containing 10% EDTA, stored in styrofoam with ice, and submitted to the Laboratório de Parasitologia Veterinária -LPV and to the Laboratório de Patologia Clínica -LPC, at the Hospital Veterinário Adílio Santos Azevedo -HV/ ASA, IFPB, Sousa, Paraíba.…”

“…The clinical presentation of hepatozoonosis varies according to the level of parasitemia, the immune status of the animal, and its association with other pathogens (MUNDIM et al 2008;SPOLIDORIO et al, 2009). Animals may have edema, intermittent fever, weight loss, pale mucous membranes, pain, diarrhea, vomiting, and gait abnormalities (BERNARDINO et al, 2016). However, because these clinical findings are nonspecific, laboratory tests are needed for confirmation (O'DWYER, 2011).…”

Occurrence of Ehrlichia canis and Hepatozoon canis and probable exposure to Rickettsia amblyommatis in dogs and cats in Natal, RN

“…et al, 2008;PALUDO et al, 2003;RAMOS et al, 2015), while two cases with molecular analyses has been reported in the southern region (LASTA et al, 2009;MALHEIROS et al, 2016). Studies in northeastern Brazil have shown lower occurrence rates ranging from 0.49% in Pernambuco to 9.3% in Paraiba (BERNARDINO et al, 2016;RAMOS et al, 2010;ROTONDANO et al, 2015). Gonçalves et al (2014) reported H. canis infection cases in Mossoro, RN.…”

<b>Epidemiological aspects of tick-borne diseases in wild and domestic animals of two environmental protection areas in the city of Natal, Rio Grande do Norte State, Brazil</b>

“…In Brazil, canine infection due to Hepatozoon canis has been reported in many regions and the occurrence may range between: 8.6% and 100% on Southeast MUNDIM et al, 2008a;DE MIRANDA et al, 2014);3.6 % and 73%, on Midwest (PALUDO et al, 2003;MUNDIM et al, 2008b;MELO et al, 2016), and one case with molecular analyses in the South region (LASTA et al, 2009). The studies in northeastern Brazil have showed lower values of occurrence that range from 0.49% on Pernambuco to 9.3% on Paraiba (RAMOS et al, 2010;ROTONDANO et al, 2015;BERNARDINO et al, 2016).…”