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Xu J, Jin H, Yang W, Ni L, Zhu Z, Jin K, Zhu H. Construction and clinical application of diagnosis and treatment model of neonatal infectious pathogens based on LAMP method. Minerva Pediatr (Torino) 2024; 76:138-140. [PMID: 37155217 DOI: 10.23736/s2724-5276.23.07268-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Affiliation(s)
- Jianbo Xu
- Clinical Laboratory, Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Huijie Jin
- Clinical Laboratory, Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Weixian Yang
- Clinical Laboratory, Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Lufei Ni
- Clinical Laboratory, Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Ziqin Zhu
- Clinical Laboratory, Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Keqin Jin
- Clinical Laboratory, Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Hongfen Zhu
- Clinical Laboratory, Jinhua Hospital of Traditional Chinese Medicine, Jinhua, China -
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Yu Y, Yang Z, Wang L, Sun F, Lee M, Wen Y, Qin Q, Yue GH. LAMP for the rapid diagnosis of iridovirus in aquaculture. AQUACULTURE AND FISHERIES 2022. [DOI: 10.1016/j.aaf.2021.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Idarraga-Bedoya SE, Álvarez-Chica J, Bonilla-Aldana DK, Moore DP, Rodríguez-Morales AJ. Seroprevalence of Neospora caninum infection in cattle from Pereira, Colombia ⋆. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2020; 22:100469. [PMID: 33308726 DOI: 10.1016/j.vprsr.2020.100469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/27/2020] [Accepted: 09/12/2020] [Indexed: 10/23/2022]
Abstract
There are over 25.6 million cattle heads in Colombia being the fourth-highest herd in Latin America. This study aimed to describe the seroprevalence of Neospora caninum in cattle from 25 rural farms at Pereira municipality, Risaralda Department, which has a total bovine population of 43,508 animals. A cross-sectional observational study was performed in beef and dairy herds during 2017-2018. A total of 325 animals in 25 herds, with 13 animals per herd, were sampled. A commercial competitive ELISA (cELISA) kit was used to detect N. caninum antibodies. Associated risk factors were analyzed in two different levels: individual animals and herds. For all the independent variables, chi-square (χ2) and Fisher tests were used to assess associations and significance. The overall estimated seropositivity was 20.6% (95%CI 16.2%-25.0%). The seroprevalence by herds was 92.0% ranging from 0.0% to 46.2%. Noteworthy, beef herds had significantly (p = 0.0107) higher seropositivity (50% of them above 35% of seropositivity) compared with those for milk purposes (4.8%) (OR = 20.0; 95%CI 1.2-331.0). Other risk factors were not significantly (p ≥ 0.05) associated with N. caninum seropositivity. Bovine neosporosis may be associated with abortions in both beef and dairy Colombian farms. More studies about the epidemiology, associated factors and consequences, as well as on tools for better diagnosis of bovine abortion, including histopathology and other ancillary tests, should be performed.
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Affiliation(s)
- Samuel E Idarraga-Bedoya
- Facultad de Medicina Veterinaria y Zootecnia, Fundación Universitaria Autónoma de las Américas, Sede Pereira, Pereira, Risaralda, Colombia
| | - Jaime Álvarez-Chica
- Facultad de Medicina Veterinaria y Zootecnia, Fundación Universitaria Autónoma de las Américas, Sede Pereira, Pereira, Risaralda, Colombia
| | - D Katterine Bonilla-Aldana
- Facultad de Medicina Veterinaria y Zootecnia, Fundación Universitaria Autónoma de las Américas, Sede Pereira, Pereira, Risaralda, Colombia; Semillero de Investigación en Zoonosis, Grupo de Investigacion BIOECOS, Fundación Universitaria Autónoma de las Américas, Sede Pereira, Pereira, Risaralda, Colombia; Public Health and infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia
| | - Dadin Prando Moore
- Department of Animal Production, National Research Council, CP7620 Balcarce, Argentina
| | - Alfonso J Rodríguez-Morales
- Semillero de Investigación en Zoonosis, Grupo de Investigacion BIOECOS, Fundación Universitaria Autónoma de las Américas, Sede Pereira, Pereira, Risaralda, Colombia; Public Health and infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia; Department of Animal Production, National Research Council, CP7620 Balcarce, Argentina; Grupo de Investigación Biomedicina, Faculty of Medicine, Fundacion Universitaria Autonoma de las Americas, Sede Pereira, Pereira, Risaralda, Colombia.
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A probe-based real-time PCR assay for the detection of Neospora caninum in clinical samples from cattle. Vet Parasitol 2019; 269:2-6. [PMID: 31079823 DOI: 10.1016/j.vetpar.2019.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 03/26/2019] [Accepted: 04/03/2019] [Indexed: 11/22/2022]
Abstract
Neospora caninum is an apicomplexan protozoan parasite that is a leading cause of abortion in cattle. Detection of parasite-specific DNA by PCR is a highly sensitive method for identifying the presence of N. caninum in a variety of tissues. We developed and validated a probe-based real-time PCR assay targeting the conserved Nc5 gene of N. caninum. Using N. caninum strain Nc-1 genomic DNA and a synthetic gene fragment as amplification standards, we determined the PCR amplification efficiency and the limit of detection to be 95.60% and 3 copies, respectively. Five pathogens frequently associated with bovine abortions, namely bovine viral diarrhea virus types I and II, bovine alphaherpesvirus-1, Chlamydia, and Leptospira, were tested to ensure analytical exclusivity. A total of 103 clinical samples from aborted fetuses were tested concurrently with a standard conventional PCR and the new probe-based real-time PCR assay. All tested samples showed 100% agreement between these two assays. In conclusion, the probe-based real-time PCR assay facilitates accurate and rapid detection of N. caninum from abortions in cattle.
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