Identification of Neospora caninum in aborted bovine fetuses of Southern Chile

Moroni, Manuel; Navarro, Mauricio A.; Paredes, Enrique; Romero, Alex; Alberdi, A.; Lischinsky, Tania; Moore, D.P.; Campero, Carlos Manuel; Uzal, Francisco A.

doi:10.24070/bjvp.1983-0246.v11i2p37-41

BJVP

2018

DOI: 10.24070/bjvp.1983-0246.v11i2p37-41

|View full text |Cite

Identification of Neospora caninum in aborted bovine fetuses of Southern Chile

Manuel Moroni

Mauricio A. Navarro

Enrique Paredes

et al.

Abstract: Moroni, et al.; Identification of Neospora caninum in aborted bovine fetuses of Southern Chile. AbstractThe aim of this study was to identify Neospora caninum in histologic sections of brain and optic nerve of aborted bovine fetuses. Sections of these tissues from 296 aborted bovine fetuses from Southern Chile, submitted between 2000 and 2010, to the Instituto de Patología Animal of the Universidad Austral de Chile were analyzed. Forty-four (14.9%) fetuses had microscopic lesions compatible with bovine neospor… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2022

2023

Publication Types

Select...

Article3

Relationship

Self Cite0

Independent3

Authors

Journals

Cited by 3 publications

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Pathohistological changes in aborted foetuses of cows due to neosporosis: Evidence from Ukraine

Nyzhnyk¹,

Hrushkovska²,

Kataieva³

et al. 2022

Ukrainian journal of veterinary sciences

View full text Add to dashboard Cite

Neosporosis is a parasitic disease characterized by abortions and the birth of weak offspring in cows. The causative agent of Neospora caninum is an obligate, protozoan parasite that belongs to the type Apicomplexa. The relevance of the study is conditioned upon the adverse impact of neosporosis on the economy of Ukraine (loss of productivity, veterinary and diagnostic costs). Furthermore, the issue of neosporosis is understudied. In this regard, the purpose of this study was to establish pathohistological changes in aborted foetuses and the foetal part of placentas and to confirm the involvement of the parasite (Neospora caninum) in cases of abortions recorded in different regions of the country. Two methods were used to investigate this problem: histological and real-time polymerase chain reaction. In aborted foetuses positive for N. caninum, the following pathohistological changes were most often detected: focal gliosis and perivascular mononuclear infiltrates in the brain; focal or diffuse mononuclear infiltration in the heart and skeletal muscles; periportal mononuclear infiltrates in the liver; focal necrosis of the mucous membrane and mononuclear infiltration in the foetal part of the placenta. Changes were less often detected in the lungs – mononuclear infiltration of the interstitium and diffuse lymphocytic alveolitis, and in the kidneys – diffuse interstitial mononuclear infiltration. No changes were found in the spleen. Neospore-like cysts were found in one out of twelve foetuses. Lesions established of foetal organs and placentas are inherent in neosporosis. The results of histological studies substantially complement the data of other authors, confirm the involvement of N. caninum in the occurrence of abortions in cows in certain regions of Ukraine, and also represent practical value for the diagnosis and control of neosporosis in cattle

show abstract

Pathohistological changes in aborted foetuses of cows due to neosporosis: Evidence from Ukraine

Nyzhnyk¹,

Hrushkovska²,

Kataieva³

et al. 2022

Ukrainian journal of veterinary sciences

View full text Add to dashboard Cite

show abstract

Bovine infectious abortion: a systematic review and meta-analysis

Hecker,

González-Ortega,

Cano

et al. 2023

Front. Vet. Sci.

View full text Add to dashboard Cite

The aim of the present systematic review and meta-analysis was to identify the main infectious agents related to bovine abortion worldwide in the period between 2000 and 2022. First, we investigated the global prevalence of infectious agents related to bovine abortion. For this analysis, only 27 articles detected of a wide panel of agents were included. The random effects model revealed that the estimated prevalence of the abortifacient agents in bovine abortion was 45.7%. The heterogeneity among studies was high, but Egger’s test showed that there was no publication bias, even though the total number of samples analyzed in these articles was variable. There was no significant effect of the year of the study publication on the estimated prevalence, although an increasing trend was observed over time, possibly due to the implementation of new diagnostic techniques. Then, we analyzed the prevalence of the main transmissible agents in bovine abortion. For this analysis, 76 studies that analyzed 19,070 cases were included. Some infectious agent was detected in 7,319 specimens, and a final diagnosis was reached in 3,977 of these, when both the infectious agent and compatible histopathological changes were detected. We found that Neospora caninum was the most detected agent (22.2%), followed by opportunistic bacteria (21.4%), Chlamydiaceae family (10.9%) and Coxiella burnetii (9.5%). Regarding viral agents, bovine herpes virus type 1 and bovine viral diarrhea displayed similar prevalence rates (approximately 5%). After considering the description of specific histopathological changes, our analyzes showed that N. caninum was a confirmed cause of abortion in 16.7% of the analyzed cases, followed by opportunistic bacteria (12.6%) and Chlamydia spp. (6.8%); however, C. burnetii was only confirmed as a cause of abortion in 1.1% of the cases. For all agents, the heterogeneity among studies was high, and the subgroup analyzes discarded the diagnostic method as the cause of such heterogeneity. This study provides knowledge about the global prevalence of the different infectious agents related to bovine abortion, the most coming of which is N. caninum. In addition, this review reveals the existing deficiencies in the diagnosis of bovine abortion that must be addressed in the future.

show abstract

Serosurvey for Selected Parasitic and Bacterial Pathogens in Darwin's Fox (Lycalopex Fulvipes): Not Only Dog Diseases Are a Threat

Hidalgo-Hermoso

Cabello²,

Verasay

et al. 2022

Journal of Wildlife Diseases

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Identification of Neospora caninum in aborted bovine fetuses of Southern Chile

Cited by 3 publications

References 18 publications

Pathohistological changes in aborted foetuses of cows due to neosporosis: Evidence from Ukraine

Pathohistological changes in aborted foetuses of cows due to neosporosis: Evidence from Ukraine

Bovine infectious abortion: a systematic review and meta-analysis

Serosurvey for Selected Parasitic and Bacterial Pathogens in Darwin's Fox (Lycalopex Fulvipes): Not Only Dog Diseases Are a Threat

Contact Info

Product

Resources

About