Ruben Rosales

Ruben Rosales
Universidad de Las Palmas de Gran Canaria | ULPGC · Instituto Universitario de Sanidad Animal y Seguridad Alimentaria (IUSA)

DVM, PhD

About

109
Publications
9,396
Reads
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578
Citations
Citations since 2016
17 Research Items
413 Citations
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20162017201820192020202120220204060
20162017201820192020202120220204060
20162017201820192020202120220204060
Additional affiliations
September 2016 - present
Universidad de Las Palmas de Gran Canaria
Position
  • Lecturer

Publications

Publications (109)
Article
Full-text available
Acholeplasma (A.) laidlawii is an opportunistic pathogen with the ability to disseminate resistance determinants to antibiotics; however, its resistance to macrolides has been less studied. The aim of the present study was to characterize the mechanisms responsible for the resistance to macrolides, tiamulin and lincomycin found in a strain of A. la...
Article
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Background: Mycoplasma (M.) hyopneumoniae, M. hyorhinis and M. hyosynoviae are significant pathogens for the porcine industry worldwide. The aim of the present study was to determine the antimicrobial susceptibility of six key antimicrobials (tylosin, tilmicosin, tylvalosin, lincomycin, tiamulin and valnemulin) routinely used for treating infectio...
Article
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Due to their predatory habits, raptors may serve as indicators of the presence of antimicrobial-resistant bacteria in the environment, but they also represent a public health risk for livestock and humans because they can act as reservoirs, sources and spreaders of these bacteria. Our objective was to determine the presence of antimicrobial-resista...
Article
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Simple Summary: Hearing is arguably the primary sensory and communication channel for cetaceans. The study of diverse physiological and pathological events involving this system, requires standardized and reliable protocols for processing valuable and scarce samples such as the ears of cetaceans. As part of our research, standardized tissue process...
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The economic costs of contagious agalactia (CA) to the small ruminant dairy industry are not well known but include losses due to mortality, lowered milk production, spoiled products, abortions and animal welfare problems, as well as diagnosis and treatment. This paper reports financial estimates made in southern Europe, including a study on small-...
Article
The economic costs of contagious agalactia (CA) to the small ruminant dairy industry are not well known but include losses due to mortality, lowered milk production, spoiled products, abortions and animal welfare problems, as well as diagnosis and treatment. This paper reports financial estimates made in Southern Europe, including a study on small-...
Article
Two moderately halophilic and psychrotolerant new Mycoplasma species were isolated from common cephalopods. Three strains were isolated in pure culture from two individual European flying squid (Todarodes sagittatus), and two individual octopuses (Octopus vulgaris). The strains showed optimal growth at 25 °C and a salinity of 3% (w/v) NaCl. Molecul...
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Mycoplasma species are a major cause of mastitis, arthritis, pneumonia and reproductive disorders in small ruminants. Mycoplasmas in reproductive systems of males have been associated with diseases as orchitis, balanoposthitis and abnormal spermatozoa activity. The aim of this study was to detect Mycoplasma species that cause reproductive infection...
Article
Mycoplasmas of humans and animals are usually associated with respiratory, autoimmune, genital and joint diseases. Human mycoplasmas have also been known to affect the brain. Severe central nervous system (CNS) diseases, such as encephalitis, have been linked to Mycoplasma pneumoniae and ureaplasma infections. Less well known is the sheep and goat...
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Background Mollicutes detection can be cumbersome due to their slow growth in vitro. For this reason, the use of DNA based on generic molecular tests represents an alternative for rapid, sensitive and specific detection of these microorganism. For this reason, six previously described nucleic acid testing assays were compared to evaluate their abil...
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Background: Little is known about the occurrence of important diseases of ruminants in Afghanistan because of the conflict affecting the country over the last 40 years. To address this discrepancy, ruminant herds in Afghanistan were screened for OIE-listed mycoplasma diseases, contagious bovine (CBPP) and caprine pleuropneumonias (CCPP). Results:...
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Important diseases like contagious bovine and caprine pleuropneumonia, avian mycoplasmosis, atypical pneumonia and contagious agalactia are caused by small degenerate wall-less organisms called mycoplasmas which evolved from gram positive bacteria about 2.5 billion years ago. The smallest of them are close to the theoretical limit for free-living e...
Article
The aim of this study was to compare PCR tests for the detection of Mycoplasma agalactiae in sheep and goats. Samples obtained from sheep and goats in Turkey were tested to determine the presence of M. agalactiae. Mycoplasma culture and two direct PCR methods based on the uvrC gene and polC gene were compared with PCR of the 16S rRNA gene followed...
Article
Mycoplasma ovipneumoniae has long been associated with respiratory disease in young sheep and goats. Here, the authors present evidence that it may be a cause of a coughing syndrome and ill thrift in young and, unusually, older Swaledale ewes on a hill farm in northern England. M. ovipneumoniae was detected in nasal swabs of a majority of affected...
Article
The prevalence of Mycoplasma bovis in milk samples submitted to the Israeli National Service for Udder Health and Milk Quality was determined during the period 2004-2014 and the genetic pattern of the obtained isolates was assessed by multilocus sequence typing (MLST). Mycoplasma spp. were identified in 66 herds including M. bovis (n = 60), M. cott...
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The aim of the study was to evaluate the presence of Mycoplasma bovis infection and co-infections with other Mycoplasma spp. infections in cattle. The tested population was one in the eastern region of Poland containing 66 dairy cows and 23 calves showing different clinical signs and suffering from pneumonia, mastitis, and arthritis. The incidence...
Article
Changes in peripheral blood leukocyte subpopulations were investigated in calves challenged intratracheally with three different Mycoplasma bovis isolates in Groups E1, E2, and E3. The controls received a placebo. Blood samples were collected before challenge and then at days 1 to 7, 14, 21 and 28. White blood cells (WBC), polymorphonuclear leukocy...
Article
Streptococcus suis is a recognized pathogen that may cause important diseases in pigs and humans. This microorganism has been repeatedly isolated from wild boar ( Sus scrofa ). However, its health implications for this wild species are still unknown. This article reports a detailed description of a fatal case of septicemia by S. suis affecting a yo...
Article
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Porcine reproductive and respiratory syndrome virus (PRRSV) induces a weak immune response enabling it to persist in different organs of infected pigs. This has been attributed to the ability of PRRSV to influence the induction of cytokine responses. In this study, we investigated the cytokine transcriptional profiles in different compartments of t...
Article
Objectives Mycoplasma mycoides subspecies capri is one of the causative agents of contagious agalactia in goats. The disease is characterised by mastitis, pneumonia, arthritis, keratitis and in acute cases septicaemia. No vaccine is currently available that has been demonstrated to prevent disease.Methods This study used two-dimensional electrophor...
Article
Full-text available
Mycoplasma bovis is a major bovine pathogen associated with bovine respiratory disease (BRD) complex and responsible for substantial economic losses worldwide. M. bovis is also associated with other clinical presentations in cattle including mastitis, otitis, arthritis and reproductive disorders. To gain a better understanding of the genetic divers...
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