title: 'Candidatus Mycoplasma haemobos': Transplacental transmission in dairy cows (Bos taurus).
abstract: 'Candidatus Mycoplasma haemobos' is a haemotropic mycoplasma that can produce various clinical signs in cattle, but abortive potential of the parasite is unknown, as well as the frequency of transplacental transmission in cattle. Thus, the objective of this work was to evaluate the frequency of detection of 'C. M. haemobos' in aborted fetuses and the blood of dairy cows. Blood samples of 22 dairy cows that aborted and pool tissues (brain, lung, heart and liver) of their respective aborted fetuses were tested by conventional PCR. The occurrence of 'C. M. haemobos' DNA in adult animals was 40.9% (9/22) and in the fetuses was 18.2% (4/22). Two fetuses that contained 'C. M. haemobos' DNA were derived from cows which were PCR negative. When stratifying by breed, it was observed that Jersey cows had a higher proportion of positive animals (8/11; 72.7%) as compared to Holstein (1/9; 11.1% P<0.01). The results of this study suggest that this parasite can be transferred via the placenta, but it is not certain if the abortions were due to 'C. M. haemobos'.
authors: Londrina State University (UEL), Preventive Veterinary Medicine Department, Rod. Celso Garcia Cid, Pr 445, Km 380, Campus Universitário, CP 6001, CEP 86.051-980, Londrina, PR, Brazil.
authors: Aline
authors: A
authors: Girotto-Soares
authors: Federal University of Rio Grande do Sul (UFRGS), Veterinary Parasitology Department, Av. Bento Gonçalves, 9090, CP 15094, CEP 91540-000, Porto Alegre, RS, Brazil.
authors: João Fabio
authors: JF
authors: Soares
authors: North Parana University (UNOPAR), Rodovia PR 218 - Km 01, Campus Universitário, CEP 86.702-670, Arapongas, PR, Brazil.
authors: Alexey Leon Gomel
authors: ALG
authors: Bogado
authors: Londrina State University (UEL), Preventive Veterinary Medicine Department, Rod. Celso Garcia Cid, Pr 445, Km 380, Campus Universitário, CP 6001, CEP 86.051-980, Londrina, PR, Brazil.
authors: César Augusto Barbosa
authors: CAB
authors: de Macedo
authors: Londrina State University (UEL), Preventive Veterinary Medicine Department, Rod. Celso Garcia Cid, Pr 445, Km 380, Campus Universitário, CP 6001, CEP 86.051-980, Londrina, PR, Brazil.
authors: Lígia Mara
authors: LM
authors: Sandeski
authors: Londrina State University (UEL), Preventive Veterinary Medicine Department, Rod. Celso Garcia Cid, Pr 445, Km 380, Campus Universitário, CP 6001, CEP 86.051-980, Londrina, PR, Brazil. Electronic address: joaoluisgarcia10@gmail.com.
authors: João Luis
authors: JL
authors: Garcia
authors: Londrina State University (UEL), Preventive Veterinary Medicine Department, Rod. Celso Garcia Cid, Pr 445, Km 380, Campus Universitário, CP 6001, CEP 86.051-980, Londrina, PR, Brazil.
authors: Odilon
authors: O
authors: Vidotto
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology* / Q000635:transmission; D005260:Female; D018445:Infectious Disease Transmission, Vertical / Q000662:veterinary*; D009174:Mycoplasma / Q000145:classification*; D009175:Mycoplasma Infections / Q000382:microbiology / Q000635:transmission / Q000662:veterinary*; D010920:Placenta; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000382:microbiology / Q000662:veterinary*
keywords: Abortion; Dairy cattle; Hemoparasites; PCR; Vertical transmission