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Bakhshani A, Parande Shirvan S, Sadr S, Maleki M, Haghparast A, Borji H. Evaluating the Toxocara cati extract as a therapeutic agent for allergic airway inflammation. Immun Inflamm Dis 2024; 12:e1307. [PMID: 38860753 PMCID: PMC11165684 DOI: 10.1002/iid3.1307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 04/29/2024] [Accepted: 05/17/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND The hygiene hypothesis suggests that early life exposure to helminth infections can reduce hypersensitivity in the immune system. OBJECTIVE The present study aims to evaluate the effects of Toxocara cati (T. cati) somatic products on allergic airway inflammation. METHODS Between 2018 and 2020, T. cati adult worms were collected from stray cats in Mashhad, Iran (31 out of 186 cats), and their somatic extract was collected. Thirty BALB/c mice were equally divided into three groups, including the OVA group (sensitized and challenged with ovalbumin), the somatic administered group (received somatic extract along with ovalbumin sensitization), and the PBS group (sensitized and challenged with phosphate buffer saline). Bronchoalveolar lavage (BAL) fluid was collected to assess the number of cells, and lung homogenates were prepared for cytokine analysis. Histopathological analysis of the lungs was performed, and inflammatory cells and mucus were detected. Cytokine levels (IL-4, IL-5, IL-10) were measured using enzyme-linked immunosorbent assay (ELISA), and ovalbumin-specific immunoglobulin E (IgE) levels were determined using a capture ELISA. RESULTS The somatic group significantly decreased regarding the lung pathological changes, including peribronchiolitis, perivasculitis, and eosinophil influx, compared to the group treated with ovalbumin alone. These changes were accompanied by a decrease in proinflammatory cytokines IL-4 and IL-5 and an increase in the anti-inflammatory cytokine IL-10, indicating a shift toward a more balanced immune response. The number of inflammatory cells in the BAL fluid was also significantly reduced in the somatic group, indicating a decrease in inflammation. CONCLUSION These preclinical findings suggest that in experimental models, T. cati somatic extract exhibits promising potential as a therapeutic agent for mitigating allergic airway inflammation. Its observed effects on immune response modulation and reduction of inflammatory cell infiltration warrant further investigation in clinical studies to assess its efficacy and safety in human patients.
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Affiliation(s)
- Amin Bakhshani
- Department of Pathobiology, Faculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Sima Parande Shirvan
- Department of Pathobiology, Faculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Soheil Sadr
- Department of Pathobiology, Faculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Mohsen Maleki
- Department of Pathobiology, Faculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Alireza Haghparast
- Department of Pathobiology, Faculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Hassan Borji
- Department of Pathobiology, Faculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
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Xu J, Han Q. Prevalence, Infection, and Risk to Human Beings of Toxocara canis in Domestic Food-Producing Animals. Vet Sci 2024; 11:83. [PMID: 38393101 PMCID: PMC10892340 DOI: 10.3390/vetsci11020083] [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: 01/16/2024] [Revised: 02/03/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
Toxocariasis is a significant food-borne zoonotic parasitic disease, and a range of birds and mammals are the paratenic hosts of Toxocara canis. The consumption of raw or undercooked meat and viscera of these paratenic hosts frequently leads to T. canis infection and the development of human toxocariasis. In this review, we will perform an analysis of relevant papers published in the National Center for Biotechnology Infrastructure database on the parasitism, migration, and infection of T. canis in chickens, pigeons, quail, pigs, cattle, sheep, and other food-producing animals, so as to make the public aware of the risk factors of human toxocariasis, improve the public's understanding of T. canis infection, and provide evidence for targeted prevention and control measures.
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Affiliation(s)
- Jingyun Xu
- Laboratory of Tropical Veterinary Medicine and Vector Biology, School of Life and Health Sciences, Hainan University, Haikou 570228, China;
- One Health Institute, Hainan University, Haikou 570228, China
| | - Qian Han
- Laboratory of Tropical Veterinary Medicine and Vector Biology, School of Life and Health Sciences, Hainan University, Haikou 570228, China;
- One Health Institute, Hainan University, Haikou 570228, China
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Dos Santos KC, Tielemans E, Cutolo AA, Guedes PEB, Harvey TV, de Carvalho Teixeira JB, Vitor RC, da Paixão Sevá A, de Melo Navarro AW, Lima ACR, Botteon KD, Bittar TV, Albuquerque GR, de Almeida Borges F, Beugnet F, Carlos RSA. Efficacy of an oral formulation of afoxolaner and milbemycin oxime against Tunga penetrans in naturally infected dogs. Parasit Vectors 2023; 16:446. [PMID: 38042848 PMCID: PMC10693705 DOI: 10.1186/s13071-023-06063-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 11/16/2023] [Indexed: 12/04/2023] Open
Abstract
BACKGROUND The sand flea Tunga penetrans is one of the agents of tungiasis, an important parasitic skin disease affecting humans and several mammalian species. Tungiasis is mainly observed in disadvantaged rural and peripheral urban communities in Latin America and sub-Saharan Africa. The dog is a major reservoir of Tunga fleas. Hematophagous adult female Tunga spp. embed and grow in their host's epidermis and cause cutaneous inflammatory disorders. NexGard Spectra® is an orally administered endectocide for dogs, a co-formulation of the isoxazoline afoxolaner and the macrocyclic lactone milbemycin oxime. The objective of this study was to assess the efficacy of this product against canine tungiasis. METHODS A blinded, negative-controlled field trial was conducted in a Brazilian community known to be highly endemic for tungiasis. Sixty-six dogs naturally infected with live T. penetrans were randomly allocated to a treated group (44 dogs) and an untreated control group (22 dogs). In a first phase, dogs from the treated group were treated on days 0, 30, and 60. Efficacy was evaluated on the basis of the macroscopic parasitic skin lesions (Fortaleza classification) on days 7, 14, 21, 30, 45, 60, 75, and 90. In a second phase, to evaluate natural reinfections, all dogs were treated on day 90 and evaluated every 2 weeks thereafter until at least 30% of dogs were infected with live sand fleas. RESULTS During the first phase, efficacy (reduction in live sand fleas) of 92.4% was demonstrated on day 7. From day 14 until day 90, the efficacy of NexGard Spectra® was 100%. In the second phase, all dogs were free of live T. penetrans from 15 until 45 days after the day 90 treatment; 60 days post-treatment, 11% of dogs were reinfected, and 75 days post-treatment, 40% of dogs were reinfected. CONCLUSIONS NexGard Spectra® was demonstrated to be highly effective against canine tungiasis. In addition to an obvious beneficial effect on the health and welfare of the treated dog, the use of this product may have a one-health benefit on human cases by controlling the main reservoir of sand fleas.
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Affiliation(s)
- Katharine Costa Dos Santos
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Eric Tielemans
- Boehringer Ingelheim Animal Health, 29 Avenue Tony Garnier, 69007, Lyon, France.
| | - Andre Antonio Cutolo
- Missouri Research Center, Boehringer Ingelheim Animal Health, 6498 Jade Rd., Fulton, MO, 65251, USA
| | - Paula Elisa Brandão Guedes
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | | | - Jamille Bispo de Carvalho Teixeira
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Rebeca Costa Vitor
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Anaiá da Paixão Sevá
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Adan William de Melo Navarro
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Ana Carolina Ribeiro Lima
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Karin Denise Botteon
- Boehringer-Ingelheim Saúde Animal, 14171 Pça. das Nações Unidas, 18° andar (Torre B), São Paulo, SP, 01449-010, Brazil
| | - Thammy Vieira Bittar
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - George Rêgo Albuquerque
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Fernando de Almeida Borges
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal de Mato Grosso do Sul (UFMS), Av. Sen. Filinto Müler, 2443 - Pioneiros, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Frederic Beugnet
- Boehringer Ingelheim Animal Health, 29 Avenue Tony Garnier, 69007, Lyon, France
| | - Renata Santiago Alberto Carlos
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil.
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Henke K, Ntovas S, Xourgia E, Exadaktylos AK, Klukowska-Rötzler J, Ziaka M. Who Let the Dogs Out? Unmasking the Neglected: A Semi-Systematic Review on the Enduring Impact of Toxocariasis, a Prevalent Zoonotic Infection. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6972. [PMID: 37947530 PMCID: PMC10649795 DOI: 10.3390/ijerph20216972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/28/2023] [Accepted: 10/17/2023] [Indexed: 11/12/2023]
Abstract
Toxocariasis remains an important neglected parasitic infection representing one of the most common zoonotic infections caused by the parasite Toxocara canis or, less frequently, by Toxocara cati. The epidemiology of the disease is complex due to its transmission route by accidental ingestion of embryonated Toxocara eggs or larvae from tissues from domestic or wild paratenic hosts. Even though the World Health Organization and Centers for Disease Control classified toxocariasis amongst the top six parasitic infections of priority to public health, global epidemiological data regarding the relationship between seropositivity and toxocariasis is limited. Although the vast majority of the infected individuals remain asymptomatic or experience a mild disease, the infection is associated with important health and socioeconomic consequences, particularly in underprivileged, tropical, and subtropical areas. Toxocariasis is a disease with multiple clinical presentations, which are classified into five distinct forms: the classical visceral larva migrans, ocular toxocariasis, common toxocariasis, covert toxocariasis, and cerebral toxocariasis or neurotoxocariasis. Anthelmintic agents, for example, albendazole or mebendazole, are the recommended treatment, whereas a combination with topical or systemic corticosteroids for specific forms is suggested. Prevention strategies include educational programs, behavioral and hygienic changes, enhancement of the role of veterinarians, and anthelmintic regimens to control active infections.
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Affiliation(s)
- Katrin Henke
- Department of Internal Medicine, Thun Hospital, Krankenhausstrasse 12, 3600 Thun, Switzerland;
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, 3008 Bern, Switzerland; (S.N.); (A.K.E.); (J.K.-R.)
| | - Sotirios Ntovas
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, 3008 Bern, Switzerland; (S.N.); (A.K.E.); (J.K.-R.)
- Department of Visceral Surgery and Medicine, lnselspital, University Hospital, University of Bern, 3008 Bern, Switzerland
| | - Eleni Xourgia
- Department of Heart Surgery, lnselspital, University Hospital, University of Bern, 3008 Bern, Switzerland;
| | - Aristomenis K. Exadaktylos
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, 3008 Bern, Switzerland; (S.N.); (A.K.E.); (J.K.-R.)
| | - Jolanta Klukowska-Rötzler
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, 3008 Bern, Switzerland; (S.N.); (A.K.E.); (J.K.-R.)
| | - Mairi Ziaka
- Department of Internal Medicine, Thun Hospital, Krankenhausstrasse 12, 3600 Thun, Switzerland;
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, 3008 Bern, Switzerland; (S.N.); (A.K.E.); (J.K.-R.)
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Santarém VA, do Couto AC, Lescano SZ, Roldán WH, Delai RR, Giuffrida R, Kmetiuk LB, Biondo AW, Dangoudoubiyam S, Dos Santos AP. Serosurvey of anti-Toxocara canis antibodies in people experiencing homelessness and shelter workers from São Paulo, Brazil. Parasit Vectors 2022; 15:373. [PMID: 36253837 PMCID: PMC9574839 DOI: 10.1186/s13071-022-05499-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/01/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Despite being one of the most prevalent helminth parasitic zoonoses worldwide and particularly in socioeconomically vulnerable populations, toxocariasis remains to be fully investigated in persons experiencing homelessness. Accordingly, the present study has aimed to assess the seroprevalence and associated risk factors of Toxocara spp. exposure in persons experiencing homelessness and shelter workers from a day-shelter in São Paulo city, Brazil. METHODS Anti-Toxocara IgG antibodies were detected by enzyme-linked immunosorbent assay (ELISA). Univariable and multivariable logistic regression models were performed to assess the risks for toxocariasis. RESULTS Overall, anti-Toxocara IgG antibodies were detected in 89/194 (45.9%, 95% CI: 39.0-52.9%) persons experiencing homelessness, twice as high (OR = 2.2; 95% CI = 1.245-3.873; P = 0.0089) than the frequency of 22/79 (27.8%, 95% CI: 19.2-38.6) in shelter workers. College education was the only protective factor for Toxocara spp. exposure (OR: 0.23; P = 0.018) revealed by logistic regression. CONCLUSIONS Although indicating a multifactorial origin of toxocariasis, the present study has assessed a highly vulnerable population with high disease risks and premature death. Thus, the living conditions of the homeless population have influenced the high prevalence of anti-Toxocara antibodies verified here compared with domiciled shelter workers. Despite being less exposed, shelter and other outdoor workers may present an occupational risk to toxocariasis. Future studies should establish whether such environmental exposure might occur in persons experiencing homelessness in other regions worldwide.
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Affiliation(s)
- Vamilton Alvares Santarém
- Graduate College in Animal Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, 19050-920, Brazil
| | - Anahi Chechia do Couto
- Graduate College of Cellular and Molecular Biology, Federal University of Paraná (UFPR), Curitiba, PR, 81531-970, Brazil
| | - Susana Zevallos Lescano
- Institute of Tropical Medicine of São Paulo, University of São Paulo, Butantã, SP, 05403-000, Brazil
| | - William Henry Roldán
- Institute of Tropical Medicine of São Paulo, University of São Paulo, Butantã, SP, 05403-000, Brazil
| | - Ruana Renostro Delai
- Department of Veterinary Medicine, Federal University of Paraná (UFPR), Curitiba, PR, 80035-050, Brazil
| | - Rogério Giuffrida
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Louise Bach Kmetiuk
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Alexander Welker Biondo
- Graduate College of Cellular and Molecular Biology, Federal University of Paraná (UFPR), Curitiba, PR, 81531-970, Brazil. .,Department of Veterinary Medicine, Federal University of Paraná (UFPR), Curitiba, PR, 80035-050, Brazil. .,Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA.
| | - Sriveny Dangoudoubiyam
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Andrea Pires Dos Santos
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
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Li HY, Zou Y, Elsheikha HM, Xu Y, Cai L, Xie SC, Zhu XQ, Zheng WB. Lipidomic changes in the liver of beagle dogs associated with Toxocara canis infection. Front Cell Infect Microbiol 2022; 12:890589. [PMID: 36176575 PMCID: PMC9514057 DOI: 10.3389/fcimb.2022.890589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022] Open
Abstract
A global lipidomic analysis using liquid chromatography–tandem mass spectrometry was performed on the liver of beagle dogs infected with Toxocara canis to profile hepatic lipid species at 12 h post-infection (hpi), 24 hpi, and 36 days post-infection (dpi). This analysis identified six categories and 42 subclasses of lipids, including 173, 64, and 116 differentially abundant lipid species at 12 hpi, 24 hpi, and 36 dpi, respectively. Many of the identified lysophospholipids, such as lysophosphatidylglycerol, lysophosphatidylserine, and lysophosphatidylcholine, may contribute to the migration and development of T. canis during the early infection stage. Pathway analysis revealed significant alterations of several immune-inflammatory pathways, such as the B-cell receptor signaling pathway, the NF-kappa B signaling pathway, and the C-type lectin receptor signaling pathway at 12 and 24 hpi. These findings demonstrate the value of lipidomic profiling in revealing the extent of changes in the composition and abundance of hepatic lipidome caused by T. canis infection and their relevance to the pathophysiology of toxocariasis in beagle dogs.
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Affiliation(s)
- Hao-Yu Li
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - Yang Zou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Hany M. Elsheikha
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Loughborough, United Kingdom
| | - Yue Xu
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - Lang Cai
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - Shi-Chen Xie
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - Xing-Quan Zhu
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, China
- Key Laboratory of Veterinary Public Health of Higher Education of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
- *Correspondence: Xing-Quan Zhu, ; Wen-Bin Zheng,
| | - Wen-Bin Zheng
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, China
- *Correspondence: Xing-Quan Zhu, ; Wen-Bin Zheng,
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Potentials and challenges in the isolation and detection of ascarid eggs in complex environmental matrices. Food Waterborne Parasitol 2022; 28:e00174. [PMID: 36017135 PMCID: PMC9396397 DOI: 10.1016/j.fawpar.2022.e00174] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 07/05/2022] [Accepted: 08/01/2022] [Indexed: 11/22/2022] Open
Abstract
Ascarid infections constitute a major concern for both human and animal health risk assessment. Although being effectively transmitted by soil, water and contaminated food, reliable detection of ascarid eggs in environmental media often remains challenging. However, contamination of the environment with ascarid ova has gained more attention as a decisive part of proper risk assessment in recent years. Due to various factors, such as sample matrices, dissociation detergents and flotation solutions, defined and standardised protocols for the isolation of eggs from complex environmental matrices are difficult to establish and therefore limited. Thus, this study reviews common techniques used for the recovery of ascarid eggs from environmental media with special emphasis on sampling strategies, purification procedures and microscopic as well as molecular detection of egg contamination. Despite various advancements, mainly in the field of molecular methods leading to more reliable and sensitive detection, it can be concluded that there is still a need for unified guidelines for sampling and recovery of ascarid eggs derived from complex environmental matrices. Standardised methods to assess environmental ascarid egg contamination are needed. The environmental sampling strategy has to be adapted to the study hypothesis. Egg detection mostly relies on matrix homogenisation, filtration, sedimentation and flotation. Microscopic detection is still frequently applied. Molecular methods enable more reliable and sensitive detection.
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Naderbandi M, Zibaei M, Haniloo A, Firoozeh F, Hatami Z, Shokri E, Taira K. Larva migrans in BALB/c mice experimentally infected with Toxocara cati ensured by PCR assay. BMC Vet Res 2022; 18:257. [PMID: 35791007 PMCID: PMC9254581 DOI: 10.1186/s12917-022-03366-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 06/30/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Toxocara cati, the cat roundworm, is a parasitic nematode that known to cause toxocariasis in intermediate hosts and humans. In this study, we characterized the dynamics of T. cati larvae migration in BALB/c mice after inoculation with eggs and ensured the migration detecting the larval DNA by a PCR. To evaluate the dynamics of larval migration and distribution, twenty-four BALB/c mice were orally inoculated with 2500 T. cati infective eggs and the visceral organs of the infected animals were examined by pepsin digestion and microscopic parasite counts, followed by PCR at day 1 to 28 post-inoculation. RESULTS The PCR assays were successfully used for detection of T. cati larvae in tissue samples and T. cati larvae and the DNAs were found in the liver, lungs, heart, kidneys and the brain. We detected T. cati in 92.2% of tissue samples by PCR, 30% higher than the conventional pepsin digestion technique. CONCLUSION Our findings demonstrated that the PCR assay is a sensitive and specific for the detection of T. cati larvae. Therefore, it could become a useful tool for the investigation of the dynamics of larval migration and Toxocara infection in murine model.
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Affiliation(s)
- Majid Naderbandi
- Department of Parasitology and Mycology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mohammad Zibaei
- Department of Parasitology and Mycology, School of Medicine, Alborz University of Medical Sciences, P.O. Box: 3149779453, Karaj, Iran
| | - Ali Haniloo
- Department of Parasitology and Mycology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Farzaneh Firoozeh
- Department of Microbiology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Zahra Hatami
- Department of Parasitology and Mycology, School of Medicine, Alborz University of Medical Sciences, P.O. Box: 3149779453, Karaj, Iran
| | - Elham Shokri
- Department of Parasitology and Mycology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Kensuke Taira
- Laboratory of Parasitology, School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa Japan
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Nath TC, Eom KS, Choe S, Islam S, Sabuj SS, Saha E, Tuhin RH, Ndosi BA, Kang Y, Kim S, Bia MM, Park H, Lee D. Insights to helminth infections in food and companion animals in Bangladesh: Occurrence and risk profiling. Parasite Epidemiol Control 2022; 17:e00245. [PMID: 35252600 PMCID: PMC8889271 DOI: 10.1016/j.parepi.2022.e00245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/15/2021] [Accepted: 02/20/2022] [Indexed: 11/25/2022] Open
Abstract
Introduction A better understanding of the epidemiology of helminths in animal hosts is important in order to ensure animal welfare, public health and food safety. The aim of this study was to explore parasitism in common animals in Bangladesh. Perception and understanding of animal owners regarding parasitic diseases management were also assessed. Materials and methods A total of 550 fecal samples were examined from common animals (cattle, goat, pig, chicken, dog, and cat) across three different areas of Bangladesh (Dhaka, Sylhet, and Chattogram) from January 2020 to March 2021. Associated risk factors were assessed through questionnaire surveys among 50 animal owners. Parasitological assessment was done using the combined sedimentation-flotation method, and factors associated with infection were modeled using mixed-effects logistic regression. Results Helminths including Toxocara sp., Spirometra sp., Capillaria sp., Trichuris sp., opisthorchiid, Ascaris suum, Fasciola sp., Paramphistomum sp., strongyles, hookworms, roundworms, taeniid, and acanthocephalans were detected in the examined animals, and overall prevalence was 59.3% (95% CI = 54.1–62.8). Parasites were found in 61.3% (245/400) of food animals and 54.0% (81/150) of companion animals. Animal owners have a good understanding of parasite infections; however, that knowledge was not being translated into practice. Logistic regression analysis showed that frequency of deworming, animal husbandry practice, contact with untreated animals, and treatment-seeking behaviors were significantly associated with parasitic infection. Conclusion Several types of zoonotic parasites are widely prevalent in animals of Bangladesh and pose a potential risk to human health. This study highlights the need to diagnose animal parasitic infection and intensified case management to avoid spillovers to animals and humans.
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Affiliation(s)
- Tilak Chandra Nath
- Department of Parasitology, Sylhet Agricultural University, Bangladesh
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
- Parasite Resource Bank, Bangladesh
| | - Keeseon S. Eom
- International Parasite Resource Bank, South Korea
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
| | - Seongjun Choe
- International Parasite Resource Bank, South Korea
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
| | - Saiful Islam
- Department of Parasitology, Sylhet Agricultural University, Bangladesh
- Parasite Resource Bank, Bangladesh
| | | | - Eva Saha
- Parasite Resource Bank, Bangladesh
| | | | | | - Yeseul Kang
- International Parasite Resource Bank, South Korea
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
| | - Sunmin Kim
- International Parasite Resource Bank, South Korea
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
| | - Mohammed Mebarek Bia
- International Parasite Resource Bank, South Korea
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
| | - Hansol Park
- International Parasite Resource Bank, South Korea
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
- Corresponding authors at: International Parasite Resource Bank, Chungbuk National University, South Korea.
| | - Dongmin Lee
- International Parasite Resource Bank, South Korea
- Department of Parasitology and Parasite Research Center, School of Medicine, Chungbuk National University, South Korea
- Corresponding authors at: International Parasite Resource Bank, Chungbuk National University, South Korea.
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10
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Bowman DD. Ascaris and Toxocara as foodborne and waterborne pathogens. Res Vet Sci 2020; 135:1-7. [PMID: 33412474 DOI: 10.1016/j.rvsc.2020.12.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 12/11/2022]
Abstract
This is a review on the current status of Ascaris and Toxocara as agents of disease as a foodborne pathogen that is often transmitted onto produce via contaminated water. The paper introduces the parasites, their biology, disease caused, and mode of transmission. It summarizes recent research on methods for the detection of the parasites on crops, their prevalence in recent surveys of ready to eat plants in different parts of the world, and potential aspects of their means for remediation on vegetable crops. Also discussed is the ubiquitous nature of the presence of these eggs in the environment due to the many humans infected and means currently underway to control these parasites though improve water quality, sanitation, and hygiene.
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Affiliation(s)
- Dwight D Bowman
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850, United States of America.
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