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A Newly Discovered Dense Granule Protein 3 in Neospora caninum. Acta Parasitol 2021; 66:1581-1585. [PMID: 34019280 DOI: 10.1007/s11686-021-00402-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Neospora caninum, an obligate intracellular parasite of the phylum Apicomplexa, typically causes an illness known as neosporosis. Dense granule proteins (GRAs) are secreted by apicomplexan and constitute the parasitophorous vacuoles (PVs) structure where tachyzoites proliferate after invasion into host cells. In Toxoplasma gondii, TgGRA3 proteins are strongly associated with PVs membrane and enhance its virulence in vivo, however, research on NcGRA3 has not been reported. METHODS Here, a novel NcGRA3 protein in N. caninum was discovered using bioinformatics analysis; the location of NcGRA3 was determined in the extracellular Nc-1 tachyzoites and intracellular PVs after invasion using immunofluorescence assays; the NcGRA3 protein existing form in the PVs membranes was analyzed using western blotting. RESULTS NcGRA3 shared 41.67% nucleotide homology and 22.17% amino acid homology with TgGRA3. Amino acid sequences ranging from 1 to 25 were signal peptide regions and 135-157 were transmembrane domains. The immunofluorescence assays showed that NcGRA3 was an apical organ secreted dense granule protein and expressed at the posterior end of tachyzoites; the partial co-localization with NcGRA6 in PVs demonstrated that NcGRA3 were expressed in the intravacuolar network structure and PVs membrane. The western blotting assays showed that NcGRA3 protein behaved as an integrated transmembrane protein in PVs. Overall, characterization of the newly discovered NcGRA3 protein will lay a foundation for its function research in the further.
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Hariri M, Arefkhah N, Ghorbani F, Namavari M, Omidian M, Sarkari B. Molecular and Serological Evaluation of Neospora caninum Infection in Dogs from a Rural Setting in Fars Province, Southern Iran. IRANIAN JOURNAL OF PARASITOLOGY 2021; 16:146-150. [PMID: 33786056 PMCID: PMC7988679 DOI: 10.18502/ijpa.v16i1.5534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background: Dogs, as the definitive host of Neospora caninum, are important in the epidemiology of this parasitic infection. We aimed to determine the prevalence of N. caninum infection in a dog population from a rural setting in Fars Province, Southern Iran, using a combination of molecular and serological techniques. Methods: This cross-sectional study was carried out in Nov 2018 in three rural districts, Sar Mashhad, HosseinAbad, and Tolesaman located in Kazeroun Township in Fars province, southern Iran. Blood samples were taken from 60 stray and household dogs. Dogs’ sera were tested for antibodies against N. caninum, using a Neospora-Modified Agglutination Test. Moreover, dogs’ buffy coats were tested for Neospora DNA, using a molecular method. Results: Anti-Neospora antibodies were detected in sera of 4 out of 60 dogs, corresponding to a seroprevalence rate of 6.7%. Out of 25 female dogs, 1 was seropositive and of 35 males, 3 were seropositive, yet the differences were not statistically significant. The infection was more prevalent in adult dogs (> 12 months), nevertheless, the differences between age and Neospora seropositivity was not statistically significant. N. caninum DNA was not detected in the buffy coat of any of the studied dogs. Conclusion: Findings of the study indicate that N. caninum is a common infection in dogs in rural areas of Fars province in southern Iran. The infected dogs might be a potentially important source of N. caninum infection to livestock in the area.
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Affiliation(s)
- Morvarid Hariri
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nasir Arefkhah
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Fariba Ghorbani
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehdi Namavari
- Shiraz Branch, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran
| | - Mostafa Omidian
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Bahador Sarkari
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Basic Sciences in Infectious Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Gharekhani J, Yakhchali M, Berahmat R. Neospora caninum infection in Iran (2004-2020): A review. J Parasit Dis 2020; 44:671-686. [PMID: 32929312 PMCID: PMC7481549 DOI: 10.1007/s12639-020-01266-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 08/28/2020] [Indexed: 01/28/2023] Open
Abstract
Knowledge on neosporosis and associated risk factors in different species of animals are so important for designing the control programs and reduce the economic losses globally. This literature review targeted for evaluating the infection rate of Neospora caninum in animals in Iran. Until April 2020, all of published documents in the main English and Persian-language databases were searched. A total number of 110 documents (English = 85 and Persian = 25) were extracted. Most of reports were sero-epidemiological studies using ELISA in Iranian cattle population. The range of Neospora infection was 3.8–76.2% in cattle, 0–54.6% in dogs, 0.9–9.9% in sheep, 6.2% in goats, 19.2–55.9% in buffaloes, 20–42.2% in horses, 52% in donkeys, 3.2–27% in camels, 14% and 19% in cats, and 0–20.4% in rodents. This rate in birds was 17.3% in chicken, 9.8% and 30.4% in pigeons, 2.8% and 3.7% in sparrows, and 9.9% in hooded crows. This is a comprehensive literature review on Neospora infection in Iran at the first time. The infection of N. caninum is widespread in Iran especially in dogs and cattle population. This review can provide baseline information for future research. Study on other hosts especially on wild and exotic animals is recommended for exact estimate of neosporosis in Iran. Investigations into molecular diagnosis and genotyping of N. caninum strains are also needed; this will be helpful for developing vaccines and finding the connection among wild and domestic cycles of disease. Education on the risk factors associated with N. caninum infection for is suggested farmers and rural public.
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Affiliation(s)
- Jamal Gharekhani
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.,Department of Laboratory Sciences, Central Veterinary Laboratory, Iranian Veterinary Organization, Hamedan Veterinary Office, Ayatollah-Rafsanjani Street, Hamedan, 6519611156 Iran
| | - Mohammad Yakhchali
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Reza Berahmat
- Department of Parasitology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Adhami G, Dalimi A, Hoghooghi-Rad N, Fakour S. Molecular and Serological Study of Neospora caninum Infection among Dogs and Foxes in Sanandaj, Kurdistan Province, Iran. ARCHIVES OF RAZI INSTITUTE 2020; 75:267-274. [PMID: 32621458 DOI: 10.22092/ari.2018.120218.1186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 07/28/2018] [Indexed: 09/30/2022]
Abstract
Neospora caninum, a protozoan parasite, causes abortions in cattle, as well as neurological disorders and reproductive problems in dogs. This study aimed to investigate the serological and the molecular prevalence of N.caninum among foxes and dogs using indirect fluorescent antibody test (IFAT) and nested-polymerase chain reaction (PCR). For this purpose, 288 and 95 both fecal and serum samples of dogs and foxes were collected, respectively, from around industrial and traditional dairy flocks in different parts of Sanandaj, Kurdistan Province, Iran, from 2013 to 2015. The sera were examined using IFAT, and fecal samples were microscopically assessed for detecting Neospora oocyst and by nested-PCR. The findings revealed that N.caninum seroprevalence were 4.86% and 4.21% in dogs and foxes, respectively. In addition, no Neospora oocysts were found microscopically and by PCR. Since this study is the first serological and molecular investigation of N.caninum among both dogs and foxes in Sanandaj, the findings of indicated that stray dogs is a main source of N.caninum infection in dairy farms in Sanandaj, Iran.
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Affiliation(s)
- Gh Adhami
- Department of Pathobiology, Faculty of Specialized Veterinary Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - A Dalimi
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.,Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - N Hoghooghi-Rad
- Department of Pathobiology, Faculty of Specialized Veterinary Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Sh Fakour
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
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Seroprevalence of Neospora caninum Infection in Dog Population Worldwide: A Systematic Review and Meta-analysis. Acta Parasitol 2020; 65:273-290. [PMID: 31919799 DOI: 10.2478/s11686-019-00163-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 12/18/2019] [Indexed: 11/20/2022]
Abstract
PURPOSE Neospora caninum is an obligate intracellular apicomplexan protozoan that causes neurological disorders in dogs. This systematic review and meta-analysis targeted at evaluating the worldwide seroprevalence rate of N. caninum in dogs. METHODS Five electronic databases, including PubMed, Scopus, Web of Science, Science Direct, and Google Scholar, until December 2018 were thoroughly searched for relevant English language articles. Papers were selected based on inclusion criteria. Data were analyzed in StatsDirect statistical software (version 2.7.9). RESULTS The searching process yielded a total number of 156 papers. The total prevalence (95% confidence intervals) of N. caninum infection in dog population worldwide was measured as 17.14% in data analyses (15.25-19.10). In addition, a significant association was also detected between neosporosis infection in dogs and continent, country, year, WHO regions, sample size and diagnostic method (P < 0.001). CONCLUSION Dogs are a matter of concern to public health officials as a source of N. caninum infection. Therefore, it is of paramount importance to provide comprehensive data and systematically analyze the prevalence of N. caninum infection in dogs. Accordingly, it is recommended that researchers carry out further studies to prevent and control neosporosis among dog population worldwide.
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Gharekhani J, Yakhchali M. Neospora caninum infection in dairy farms with history of abortion in West of Iran. Vet Anim Sci 2019; 8:100071. [PMID: 32734088 PMCID: PMC7386725 DOI: 10.1016/j.vas.2019.100071] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 11/05/2022] Open
Abstract
Neospora caninum is a major cause of abortion and economic losses among dairy farms in Iran and other countries. The main goal of current investigation was to evaluate the presence of antibodies against N. caninum and associated risk factors in dairy herds with history of abortion in Hamedan province of West Iran. A total numbers of 476 and 185 blood samples of pregnant cattle and farm dogs from 10 dairy farms with history of abortion were randomly collected. Bulk milk sample was taken from each farm. All samples were subjected for detection of IgG antibody against N. caninum using ELISA technique. Of all examined animals, 24.8% of cattle and 8.65% of dogs were seropositive to N. caninum. The seroprevalence had significant differences with abortion, stillbirth, metritis, breed, close contact to dogs, wild carnivores, rodents, poultry, and pregnancy using artificial insemination method. There were no significant differences among seroprevalence and different age groups, number and stage of gestation, and herd population. In all investigated farms, bulk milk examination was positive. In examined dogs, there was significant difference between seroprevalence and sex. It was concluded that N. caninum infection may be responsible for abortion and economic losses in dairy farms of the region. This was also the first comprehensive report on associated risk factors to N. caninum infection in dairy farms in the region.
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Affiliation(s)
- Jamal Gharekhani
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Nazlu campus, Sero road, 5756151818, Urmia, Iran
| | - Mohammad Yakhchali
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Nazlu campus, Sero road, 5756151818, Urmia, Iran
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Gao X, Wang H. Seroprevalence and risk factors for Neospora caninum infection in dogs in rural northeastern mainland China. ACTA ACUST UNITED AC 2019; 26:32. [PMID: 31145075 PMCID: PMC6542294 DOI: 10.1051/parasite/2019034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 05/20/2019] [Indexed: 11/14/2022]
Abstract
Although Neospora caninum is an important veterinary pathogen, veterinarians in various areas including in Mainland China lack a full understanding of neosporosis distribution in dog populations. This study aims to determine the emergence of anti-N. caninum antibodies in canine populations classified based on breeders, herdsmen, and huntsmen in northeast mainland China. In addition, the risk factors associated with seropositivity were explored. An indirect immunofluorescent antibody test (IFAT) was performed on canine serum to determine seroprevalence. Logistic regression models were used to collect and analyze individual and management data, in order to determine high-reliability predictors of seroprevalence as well as the level of anti-N. caninum antibodies. Among the 476 dogs tested, 95 (20%) were seropositive. Mixed breed (OR 1.53), former strays (OR 1.38), dogs living on cattle farms (OR 2.30), hunting dogs (OR 1.22) as well as raw meat feeding (OR 1.66) were correlated (p < 0.05) with N. caninum infection. Interestingly, the seropositivity of dogs on cattle farms was higher (28%) than that of those (24.8%) living in breeding facilities (p < 0.05). A large number of seropositive dogs were found on cattle farms in the study region, suggesting horizontal transmission between dogs and cattle. Therefore, this source of infection should be studied further, and should be a strong consideration in differential diagnoses of dogs raised on cattle farms.
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Affiliation(s)
- Xiang Gao
- Department of Veterinary Surgery, Northeast Agricultural University, Harbin, 150030 Heilongjiang, PR China
| | - Hongbin Wang
- Department of Veterinary Surgery, Northeast Agricultural University, Harbin, 150030 Heilongjiang, PR China
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Zarra-Nezhad F, Borujeni MP, Mosallanejad B, Hamidinejat H. A seroepidemiological survey of Toxoplasma gondii infection in referred dogs to Veterinary Hospital of Ahvaz, Iran. Int J Vet Sci Med 2017; 5:148-151. [PMID: 30255064 PMCID: PMC6137845 DOI: 10.1016/j.ijvsm.2017.08.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/13/2017] [Accepted: 08/31/2017] [Indexed: 01/12/2023] Open
Abstract
Toxoplasma gondii is an intracellular protozoan parasite, which is the cause of toxoplasmosis and can infect a wide variety of warm-blooded animals, including dogs and humans. The present study evaluated the seroprevalence of T. gondii infection in pet dogs in Ahvaz, southwest city of Iran, and investigated the related possible risk factors. A total of 180 serum samples were collected from dogs referred to Veterinary Hospital of Ahvaz. The samples were then tested by indirect enzyme-linked immunosorbent assay. The prevalence of T. gondii antibodies were 46.67%. Logistic regression and chi square tests were used for evaluating of risk factors. The positivity increased statistically significantly with dog’s gender (56% females and 39% males, P = 0.001), age (18% in <2 years old, 96% in ≥4 years old, P = 0.001) and place of living (47% outdoor dogs 38% house hold dogs, P = 0.025). However, no statistically significant association was found with dogs’ breed, deworming, food ingestion or contact with cats. Overall, the results showed a relatively high seroprevalence of T. gondii infection in dogs in southwest Iran (Ahvaz) and proved association of T. gondii prevalence rates with the dog’s age, gender and place of living.
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Affiliation(s)
- Fatemeh Zarra-Nezhad
- Department of Food Hygiene, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mahdi P Borujeni
- Department of Food Hygiene, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Bahman Mosallanejad
- Department of Clinical Science, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Hossein Hamidinejat
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Serological study of Neospora caninum in dogs and wildlife in a nature conservation area in southern Portugal. ACTA ACUST UNITED AC 2017. [DOI: 10.1017/pao.2017.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SUMMARYA serological survey was performed to evaluate the presence of specific antibodies againstNeospora caninumin dogs and native animals in a wildlife conservation area in southern Portugal. The study involved 463 animals, including dogs (n = 286), European rabbits (Oryctolagus cuniculus;n = 32), Egyptian mongoose (Herpestes ichneumon;n = 34), wild boars (Sus scrofa;n = 26), foxes (Vulpes vulpes,n = 25), common genets (Genetta genetta;n = 17), red deer (Cervus elaphus;n = 14), wildcats (Felis silvestris;n = 6), four mustelid species (n = 17) and rodents (n = 6). Samples from dogs were analysed by Indirect Fluorescent Antibody Test (IFAT). Samples from wild animals were screened by the modified agglutination test and positive and doubtful results were confirmed by IFAT. The seroprevalence ofN. caninumin dogs was 32·5% [95% confidence interval (95% CI) 27·3–38·1]. Among wild animals, exposure toN. caninumwas confirmed only in foxes (12%, 95% CI 4·2–30) and rabbits (25%, 95% CI 13·3–42·1). This is the first evidence of natural exposure toN. caninumin foxes and rabbits in Portugal, and our results suggest that rabbits may play a role as reservoirs of infection to dogs, foxes and other wildlife carnivores. The relevance of this finding in the sylvatic cycle ofN. caninumneeds further studies, since infection may affect wildlife species and cattle grazing in the same areas.
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Wang S, Yao Z, Zhang N, Wang D, Ma J, Liu S, Zheng B, Zhang B, Liu K, Zhang H. Serological study of Neospora caninum infection in dogs in central China. ACTA ACUST UNITED AC 2016; 23:25. [PMID: 27317461 PMCID: PMC4912684 DOI: 10.1051/parasite/2016025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 06/03/2016] [Indexed: 01/10/2023]
Abstract
Neospora caninum is a protozoan parasite that causes abortion in cattle as well as reproduction problems and neurological disorders in dogs. Dogs are important in the epidemiology of N. caninum because they act as definitive hosts, shedding oocysts in the environment. To investigate the seroprevalence of N. caninum infection in dogs in central China, 1176 serum samples were collected from domestic dogs in Henan province, central China between March 2015 and February 2016 and tested for IgG antibody against N. caninum, using the indirect fluorescent antibody test (IFAT). The overall seroprevalence of N. caninum was nearly 15% (172/1176). No significant difference was observed between this seroprevalence according to sex and breed of dogs (p > 0.05). The infection rate in rural dogs (18%) was higher (p < 0.05) than in urban dogs (11%). The prevalence of N. caninum infection in dogs increased (p < 0.05) with age. The results of the present study indicate the high prevalence of N. caninum antibodies in dogs in Henan province, central China. Sanitary conditions and animal health must be improved to prevent the transmission risk of N. caninum by dogs.
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Affiliation(s)
- Shuai Wang
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Zhijun Yao
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Nian Zhang
- Xinxiang Assegal Medical Examination Institute, Xinxiang, Henan 453003, PR China
| | - Dong Wang
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Jingbo Ma
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Shiguo Liu
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Bin Zheng
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Bin Zhang
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Kuo Liu
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Haizhu Zhang
- Department of Human Parasitology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
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Occurrence and first multilocus microsatellite genotyping of Neospora caninum from naturally infected dogs in dairy farms in Henan, Central China. Parasitol Res 2016; 115:3267-73. [DOI: 10.1007/s00436-016-5142-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 05/19/2016] [Indexed: 10/21/2022]
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NOGUEIRA CI, MESQUITA LP, ABREU CC, NAKAGAKI KYR, SEIXAS JN, BEZERRA PS, ROCHA CMBM, GUIMARAES AM, PECONICK AP, VARASCHIN MS. Risk factors associated with seroprevalence of Neospora caninum in dogs from urban and rural areas of milk and coffee production in Minas Gerais state, Brazil. Epidemiol Infect 2013; 141:2286-93. [PMID: 23419686 PMCID: PMC9151372 DOI: 10.1017/s0950268813000162] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 01/03/2013] [Accepted: 01/12/2013] [Indexed: 11/06/2022] Open
Abstract
This study was conducted to determine the seroprevalence of anti-Neospora caninum antibodies and to investigate the risk factors related to seroprevalence in dogs from urban and rural areas with distinct economic activities (milk and coffee production) in Minas Gerais state, Brazil. For this purpose, blood samples from 703 dogs were collected and questionnaires addressing epidemiological aspects were completed by dog-owners. The sera were analysed for anti-N. caninum antibodies by indirect fluorescent antibody tests (IFAT ≥ 1:50). Association between epidemiological aspects and seropositivity in dogs was evaluated with multivariate logistic regression models. A total of 80 (11·4%) dogs tested positive for N. caninum. In the multivariate logistic regression models, dogs aged >4 years, dogs used as guard dogs, dogs that spontaneously hunt, and history of bovine abortion were found to be greater risk factors for canine N. caninum infection. When we considered only dogs from rural areas, an association with seroprevalence was seen for milk farms, dogs not fed with commercial food, dogs that hunt, and dogs used as guard dogs.
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Affiliation(s)
- C. I. NOGUEIRA
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - L. P. MESQUITA
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - C. C. ABREU
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - K. Y. R. NAKAGAKI
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - J. N. SEIXAS
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - P. S. BEZERRA
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - C. M. B. M. ROCHA
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - A. M. GUIMARAES
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - A. P. PECONICK
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - M. S. VARASCHIN
- Departamento de Medicina Veterinaria, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
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Gharekhani J, Tavoosidana GR, Zandieh M. Seroprevalence of Neospora caninum in sheep from Western Iran. Vet World 2013. [DOI: 10.14202/vetworld.2013.709-710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Gharekhani J, Tavoosidana G, Akbarein H. Serological study of Neospora caninum infection in dogs and cattle from west of Iran. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s00580-013-1763-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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