Now showing items 21-37 of 37

    • Caracterización histológica e histoquímica de branquia, hígado y riñón de perca criolla ( Percichthys trucha, Valenciennes, 1833 ) para su uso en biomonitoreo ambiental 

      Palma Leotta, María Evangelina; Carili, Martina; Cáceres, Antonella Rosario Ramona (Comité editorial Acta microscópica, 2017-12)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. El objetivo de esta investigación fue realizar la descripción histológica de los principales órganos blanco de contaminantes ambientales en Percichthys trucha, pez nativo y ampliamente distribuido en ríos y lagos del sur de Argentina. Se capturaron sesenta especímenes adultos sanos de tamaño y peso similar, en Embalse El Nihuil, Mendoza, Argentina. Se describieron macroscópicamente las branquias, el hígado y el riñón y se fijaron en formalina neutra bufferada al 10% para su inclusión y tinción con hematoxilina eosina, ácido peryódico de Schiff (PAS), ...
    • Vector Borne Diseases in Mid Western Argentina, First Report of Setaria Equina [Nematoda: Onchocercidae] in A Horse [Equus caballus] 

      Mera y Sierra, Roberto; Iranzo, José; Neira, Gisela (Comité editorial Austin Journal of Vector Borne Diseases, 2017-12-05)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Vector borne diseases are spreading worldwide. Companion animals can be useful as sentinels for disease surveillance. Setaria spp. are filarial nematodes transmitted by Aedes spp. and Culex spp. Setaria equina has been reported in Asia, Africa and North America. This zoonotic nematode is frequently asymptomatic in horses, except during its erratic migrations. Filarial worms have a tropism for ocular and nervous tissues, having important implications in veterinary and public health. In mid west Argentina, Dirofilaria immitis has already been described ...
    • Reference values for acetyl and butyrylcholinesterases in cattle under actual management conditions, hepatic and renal function by application of chlorpyrifos 

      Ferré, Daniela Marisol; Lentini, Valeria Roxana; Romano, Raquel; Ludueña, Héctor Ricardo; Jotallán, Paola Jimena; Gorla, Nora Bibiana María (Comité editorial Journal of Environmental Science and Health, 2018-01-02)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Chlorpyrifos is an anticholinesterase organophosphate insecticide widely used in Argentina in the production of food derived from animal, fruit and horticultural origin and is reported as a residue within these products. Local reference values for acetyl and butyrylcholinesterase were determined in Aberdeen Angus bovine and cross bred cattle (n D 25), a requirement to be able to evaluate toxicity of commercial organophosphate and carbamate formulations. The activity of cholinesterase enzymes presented an overall mean of 2,183.00 § 485.6 IU L¡1 for ...
    • Ensayo de micronúcleos de citoma bucal en trabajadores de fincas frutícolas que han aplicado plaguicidas alrededor de quince años. 

      Ferré, Daniela Marisol; Quero, Martín; Hynes, Valentina; Saldeña, Eliana; Lentini, Valeria; Tornello, Marcelo; Carracedo, Rocío; Gorla, Nora Bibiana María (Comité editorial Revista internacional de contaminación ambiental, 2018-02)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. La aplicación de plaguicidas es una práctica habitual en agricultura. Una alta proporción de estos productos están asociados con la generación de daño genético. Los tipos de plaguicidas, modos de aplicación y cantidad de elementos de protección personal usados varían entre regiones, lo que impide transferir en forma directa, la evidencia de genotoxicidad que se hubiese detectado en los trabajadores de otras zonas geográficas. En esta investigación, se estudió el nivel de daño genético en personas que han aplicado plaguicidas agrícolas en las plantaciones ...
    • Potential risks of dietary exposure to chlorpyrifos and cypermethrin from their use in fruit/vegetable crops and beef cattle productions. 

      Ferré, ´Daniela Marisol; Quero, Arnoldo Ángel Martín; Hernández, Antonio Francisco; Hynes, Valentina; Tornello, Marcelo Javier; Lúders, Carlos; Gorla, Nora Bibiana María (Comité editorial Environ Monitoring and Assessment, 2018-04-18)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. The active ingredients (a.i.) used as pesticides vary across regions. Diet represents the main source of chronic exposure to these chemicals. The aim of this study was to look at the pesticides applied in fruit, vegetable, and beef cattle productions in Mendoza (Argentina), to identify those that were simultaneously used by the three production systems. Local individuals (n = 160), involved in these productions, were interviewed. Glyphosate was the a.i. most often used by fruit-vegetable producers, and ivermectin by beef cattle producers. Chlorpyrifos ...
    • Especies de garrapatas (Acari: Ixodidae) parásitas de perros (Canis familiaris) en zonas urbanas del Gran Mendoza, Argentina. 

      Fantozzi, María Cecilia; Linares, María Cielo; Cuervo, Pablo Fernando; Romoli, Andrés; Vittaz, Diego; Mera y Sierra, Roberto (Comité editorial Revista FAVE – Sección Ciencias Veterinarias, 2018-06-21)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. El conocimiento de las especies de ectoparásitos presentes en los animales de compañía tiene implicancias tanto en medicina veterinaria como en salud humana, ya que varios agentes tienen la potencialidad de transmitirse del animal al humano y viceversa. Se revisaron 466 garrapatas remitidas al Centro de Investigación en Parasitología Regional (CIPaR) durante los años 2010 y 2013, recolectadas en 217 perros de zonas urbanas de la provincia de Mendoza. El 83,5% (n=385) fueron identificadas como Rhipicephalus sanguineus sensu lato (84 machos y 199 hembras – ...
    • Frecuencia de micronúcleos en eritrocitos con coloración secuencial Giemsa-naranja de acridina en el gato doméstico. 

      Quero, Arnoldo Ángel Martín; Muñoz, Irma; Ferré, Daniela Marisol; Gorla, Nora Bibiana María (Comité editorial Revista de Investigaciones Veterinarias del Perú, 2018-09)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Los felinos domésticos comparten el ambiente doméstico con el hombre y tienen condiciones que los hacen especialmente sensibles a compuestos genotóxicos, por lo que son buenos candidatos como bioindicadores en el biomonitoreo de ambientes domésticos. El objetivo del estudio fue aplicar el ensayo de micronúcleos en eritrocitos de gatos domésticos (Felis domesticus) y evaluarlos mediante las coloraciones de Giemsa y naranja de acridina (NA) fluorescente realizada en forma secuencial, para identificar la más adecuada para esta especie. Se aplicó el ensayo ...
    • Report of Amblyomma parvitarsum infesting goats in Midwestern Argentina 

      Fantozzi, María Cecilia; Tarragona, Evelina Luisa; Dayenoff, Patricio; Cuervo, Pablo Fernando; Mera y Sierra, Roberto; Nava, Santiago (Comité editorial Veterinary Parasitology, 2018-09-24)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Adult ticks were collected from goats on September 2012 in the locality of Trintrica (35° 17′ 19″ S - 68° 44′ 6″ W, 1430 m.a.s.l.), Mendoza, Argentina. The specimens were identified as seven females and three males of Amblyomma parvitarsum Neumann, 1901. This record represents the new occurrence of A. parvitarsum in the province of Mendoza, as well as the first report of the parasitism in goats along the geographical range of A. parvitarsum. Sitio de la revista: https://www.sciencedirect.com/science/article/abs/pii/S2405939018300170
    • Seasonal changes in feed intake, diet digestibility and diet composition by lactating and non-lactating goats browsing in a semi-arid rangeland of Argentina 

      Egea, Angela Vanina; Bakker, María Leontina; Allegretti, Liliana Inés; Paez, Sebastián Antonio; Grilli, Diego Javier; Guevara, Juan Carlos; Viillalba, Juan José (Comité editor Grass and Forage Science, 2018-10-01)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. We determined the seasonal nutrient and secondary compound intake, in vivo diet digestibility (DD) and diet species composition of goats in different physiological states in a desert rangeland of Argentina. During the wet and the dry seasons, 24 mature female Creole goats (six non-lactating, non-pregnant and six lactating in each season) were used in a 2 × 2 factorial design. Diet botanical composition, DD and dry-matter intake (DMI) were estimated by the combined use of visual observation, microhistological analyses of faecal samples and n-alkane technique. ...
    • Emerging insights into hypothalamic-pituitary- gonadal axis regulation and interaction with stress signalling. 

      Acevedo-Rodríguez, Alexandra; Kauffman, Alexander; Cherrington, Brian; Borges, Cibele; Roepke, Troy; Laconi, Myriam (Comité editorial Journal of Neuroendocrinology, 2018-10-30)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA.Reproduction and fertility are regulated via hormones of the hypothalamic-pituitary-gonadal (HPG) axis. Control of this reproductive axis occurs at all levels, including the brain and pituitary, and allows for the promotion or inhibition of gonadal sex steroid secretion and function. In addition to guiding proper gonadal development and function, gonadal sex steroids also act in negative-and positive-feedback loops to regulate reproductive circuitry in the brain, including kisspeptin neurones, thereby modulating overall HPG axis status. Additional regulation ...
    • Air Sac Nematode ( Serratospiculum tendo) Infection in an Austral Peregrine Falcon ( Falco peregrinus cassini) in Argentina. 

      Ibarra, Jennifer; Mera y Sierra, Roberto Luis; Neira, Gisela; Ibaceta, Daniel; Saggese, Miguel (Comité editorial Journal of Wildlife Diseases, 2019-01)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. We report a case of air sac nematode (Serratospiculum tendo) infection in an adult male Austral Peregrine Falcon (Falco peregrinus cassini) admitted to a rehabilitation center in Mendoza Province, Argentina, in September 2017. This case of air sac nematodes reported in an Argentine raptor is only the second report of S. tendo in South America. We recommend examination of all raptors, especially those falcon species that include insects in their diet and inhabit open lands and those in rehabilitation centers or kept for falconry, education, or ...
    • Pseudobutyrivibrio xylanivorans adhesion to epithelial cells 

      Grilli, Diego Javier; Mansilla, María Eugenia; Gimenez, María Cecilia; Sohaefer, Noelia; Ruiz, María Soledad; Terebiznik, Mauricio; Sosa, Miguel; Arenas, Graciela Nora (Comité editorial Anaerobe Journal, 2019-01-05)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. The ruminal bacteria Pseudobutyrivibrio xylanivorans strain 2 (P. xylanivorans 2), that mediates the digestion of plant fiber, is considered an attractive candidate for probiotics. Adherence to the epithelium of the digestive tract of the host is one of the major requirements for probiotics. In this study, we assessed the adhesion of P. xylanivorans 2 to SW480 cells and characterized this process utilizing multiple microscopy approaches. Our results indicate that a multiplicity of infection of 200 CFU/cell allows the highest bacteria to cell binding ...
    • Plasma Cholinesterase Activity in Wild Birds from Undisturbed Woodlands in the Central Monte Desert 

      Quero, Arnoldo Ängel Martín; Zarco, Agustín; Landa, Florencia Belén; Gorla, Nora Bibiana María (2019-04-30)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Plasma cholinesterase activity is a biomarker sensitive to the effect of organophosphate and carbamate pesticides, and its enzymatic levels have been previously unknown for most of the wild birds analyzed in the present study. Our objectives were to establish plasma acetylcholinesterase levels in songbirds of 2 undisturbed sites in the central Monte Desert (Argentina). We also examined the influence on cholinesterase activity of age, sex, body condition, feeding and migratory habits, and species. One hundred and sixty‐five wild birds belonging to 26 species ...
    • Evaluation of the genotoxic potential of cypermethrin, chlorpyrifos and their subsequent mixture, on cultured bovine lymphocytes 

      Ferré, Daniela Marisol; Ludueña, Héctor Ricardo; Romano, Raquel; Gorla, Nora Bibiana María (Comité editorial Chemosphere Journal, 2019-11-09)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Cypermethrin (CYP) and chlorpyrifos (CPF) are insecticides/parasiticides used in the production of fruits, vegetables and beef cattle. These substances or their metabolites are frequently reported as residues in food, whose consumption in a diet implies a genotoxic risk. The potential for chronic toxicity of CYP and CPF is unclear, and only a few genotoxicological evaluations based on their mixture have been performed. The aim of this study was to evaluate the genotoxic potential of CYP, CPF and CYP þ CPF in five concentrations, from 5.9 to 175 mg/mL, ...
    • Biomonitoring of the hematological, biochemical and genotoxic effects of the mixture cypermethrin plus chlorpyrifos applications in bovines 

      Ferré, Daniela Marisol; Jotallan, Paola; Lentini, Valeria; Ludueña, Héctor Ricardo; Romano, Raquel; Gorla, Nora Bibiana María (Science of the Total Environment Editorial, 2020-03-19)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. External antiparasitic agents applied in bovine production represent a risk to consumers of meat products, espe- cially if the conditions of their use are not strictly respected. The post-mortem control of residues in meat is an activity that must be updated and reinforced by the biomonitoring of live animals and the use of analytical tools to help identifying signs of early warning risks. The objective of the present study was to carry out a pre- slaughter biomonitoring approach in Aberdeen Angus cattle and crosses (n = 12) with the application of ...
    • Epidemiological link between canine monocytic ehrlichiosis caused by Ehrlichia canis and the presence of Rhipicephalus sanguineus sensu stricto in Argentina 

      Sebastian, Patrick; Mera y Sierra, Roberto; Neira, Gisela; Hadid, Jaled; Flores, Fernando; Nava, Santiago (Parasitology Research Editorial, 2021-01-08)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA. In this work, we analyze data that support an epidemiological link between cases of canine monocytic ehrlichiosis (CME) by Ehrlichia canis and the presence of Rhipicephalus sanguineus sensu stricto as vector in an endemic area for this tick in Argentina. In a blood sample of a 1-year-old toy poodle with CME compatible clinical signs, which showed CME typical morulae in monocytes in Giemsa-stained blood smear, DNA of E. canis was detected by PCR. Further, DNA of E. canis was also detected in a female of R. sanguineus s.s. collected on the infected dog. ...
    • A Single Nucleotide Polymorphism Translates into a Radical Amino Acid Substitution at the Ligand-Binding Site in Fasciola hepatica Carboxylesterase B 

      Miranda-Miranda, Estefan; Scarcella, Silvana; Reynaud, Enrique; Narváez-Padilla, Verónica; Neira, Gisela; Mera y Sierra, Roberto; Aguilar-Díaz, Hugo; Cossio-Bayugar, Raquel (Comite editorial GENES, 2022-10-19)
      ARTÍCULO PUBLICADO EN REVISTA EXTERNA DE ACCESO ABIERTO. Fasciola hepatica anthelmintic resistance may be associated with the catalytic activity of xenobiotic metabolizing enzymes. The gene expression of one of these enzymes, identified as car boxylesterase B (CestB), was previously described as inducible in adult parasites under anthelmintic treatment and exhibited a single nucleotide polymorphism at position 643 that translates into a radical amino acid substitution at position 215 from Glutamic acid to Lysine. Alphafold 3D models of both allelic sequences exhibited a significant affinity ...