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Aspectos de la respuesta inmune innata en las infecciones intramamarias causadas por Staphylococcus aureus en bovinos = Aspects of the innate immune response to intramammary Staphylococcus aureus infections in cattle
Pereyra, Elizabet Amanda Lorena; Dallard, Bibiana Elisabet; Calvinho, Luis Fernando (2014-10)Staphylococcus aureus es el principal agente causante de mastitis bovina en Argentina y en el mundo. Esta bacteria ocasiona infecciones crónicas que generan importantes pérdidas a los productores y la industria lechera. ... -
Capacity of two Staphylococcus aureus strains with different adaptation genotypes to persist and induce damage in bovine mammary epithelial cells and to activate macrophages
Sacco, Sofía Clara; Velázquez, Natalia S.; Renna, María Sol; Beccaria, Camila; Baravalle, Celina; Pereyra, Elizabet Amanda Lorena; Monecke, Stefan; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (Elsevier, 2020-01)The aim of this study was to evaluate and compare the ability to adhere/internalize, persist, and induce damage in mammary epithelial cells (MAC-T) of two Staphylococcus aureus strains with different adaptation genotypes ... -
Characterization of immune response in Staphylococcus aureus chronically infected bovine mammary glands during active involution
Andreotti, Carolina Soledad; Baravalle, Celina; Sacco, Sofía Clara; Lovato, Melisa Belen; Pereyra, Elizabet Amanda Lorena; Renna, María Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (2017-10)The aim of this study was to characterize the immune response in Staphylococcus aureus chronically infected bovine mammary glands during active involution. Twenty-one Holstein non-pregnant cows in late lactation either ... -
Detection of Staphylococcus aureus adhesion and biofilm-producing genes and their expression during internalization in bovine mammary epithelial cells
Pereyra, Elizabet Amanda Lorena; Renna, María Sol; Picech, Florencia; Baravalle, Celina; Andreotti, Carolina Soledad; Russi, Romina; Calvinho, Luis Fernando; Diez, Cristina; Dallard, Bibiana Elisabet (2016)Staphylococcus aureus is one of the most prevalent pathogens isolated from bovine mastitis, causing chronic intramammary infections (IMI) that limit profitable dairying. The course of infection is often associated with ... -
Differential immune response to two Staphylococcus aureus strains with distinct adaptation genotypes after experimental intramammary infection of dairy cows
Engler, Carolina; Renna, María Sol; Beccaria, Camila; Silvestrini, Paula; Pirola, Silvana I.; Pereyra, Elizabet Amanda Lorena; Baravalle, Celina; Camussone, Cecilia; Monecke, Stefan; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (Elsevier, 2022-11)The aim of this study was to evaluate and compare the ability of two S. aureus strains with different adaptation genotypes (low and high) to the bovine mammary gland (MG) to establish an intramammary infection (IMI) and ... -
Effects of chronic Staphylococcus aureus infection on immunological parameters and functionality of macrophages isolated from bovine mammary secretions
Renna, María Sol; Silvestrini, Paula; Beccaria, Camila; Velázquez, Natalia S.; Baravalle, Celina; Engler, Carolina; Pereyra, Elizabet Amanda Lorena; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (Elsevier, 2019-09)The aim of this study was to characterize the effects of chronic S. aureus intramammary infection (IMI) on local innate and adaptive immune response during active involution. Cows in late lactation that were either uninfected ... -
Functional role of antibodies generated in heifers through immunization with Staphylococcus aureus vaccines in invasion and phagocytosis assays
Renna, María Sol; Pereyra, Elizabet Amanda Lorena; Baravalle, Celina; Camussone, Cecilia; Dallard, Bibiana Elisabet; Marcipar, Iván Sergio; Calvinho, Luis Fernando (2014-11)A successful Staphylococcus aureus vaccine should elicit a long-term antibody response that prevents establishment of the infection. The aim of the present study was to evaluate the functional role of antibodies raised ... -
Immune response of Staphylococcus aureus strains in a mouse mastitis model is linked to adaptive capacity and genotypic profiles
Pereyra, Elizabet Amanda Lorena; Sacco, Sofía Clara; Dure, Andrea; Baravalle, Celina; Renna, María Sol; Andreotti, Carolina Soledad; Monecke, Stefan; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (2017)Staphylococcus aureus is one of the most frequently isolated major pathogens from intramammary infections (IMI) worldwide. The mechanisms by which S. aureus IMI are established and maintained in dairy cows involve both ... -
In vitro evaluation of ginsenoside Rg1 immunostimulating effect in bovine mononuclear cells
Silvestrini, Paula; Beccaria, Camila; Renna, María Sol; Engler, Carolina; Simonutti, Valeria; Cellone, Ivana; Calvinho, Fernando Luis; Dallard, Bibiana Elisabet; Baravalle, Celina (Elsevier, 2023-05)The aim of this study was to evaluate the immunomodulatory effect of ginsenoside Rg1 on mammary secretion and peripheral blood mononuclear cells (MSMC and PBMC, respectively). The mRNA expression of TLR2, TLR4 and selected ... -
Intramammary infusion of Panax ginseng extract in bovine mammary gland at cessation of milking induces changes in the expression of toll-like receptors, MyD88 and NF-kB during early involution
Baravalle, Celina; Silvestrini, Paula; Cadoche, Mónica C.; Beccaria, Camila; Andreotti, Carolina Soledad; Renna, Maria Sol; Pereyra, Elizabet Amanda Lorena; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (2015-06)The purposes of this study were to explore TLR2 and TLR4 participation and MyD88 and NF-κB activation in bovine mammary glands (BMG) treated with Panax ginseng (PG) at involution and verify the effect of PG in the cytokine ... -
Intramammary infusion of Panax ginseng extract in the bovine mammary gland at cessation of milking modifies components of the insulin-like growth factor system during involution
Dallard, Bibiana Elisabet; Pujato, Silvina A.; Baravalle, Celina; Pereyra, Elizabet Amanda Lorena; Rey, Florencia; Renna, Maria Sol; Calvinho, Luis Fernando (2013-06)The objective of this study was to evaluate the effects of a single intramammary infusion of Panax ginseng extract (GS) on insulin-like growth factors (IGF) in bovine mammary gland during early involution. Eight mammary ... -
Intramammary inoculation of Panax ginseng plays an immunoprotective role in Staphylococcus aureus infection in a murine model
Silvestrini, Paula; Beccaria, Camila; Pereyra, Elizabet Amanda Lorena; Renna, María Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet; Baravalle, Celina (2017-12)The immunoprotective effect of Panax ginseng (Pg) extract was investigated in a mouse mastitis model. Lactating female mice were intramammarily inoculated with Pg or placebo, and then were challenged with S. aureus, while ... -
Involvement of matrix metalloproteinases and their inhibitors in Staphylococcus aureus chronically infected bovine mammary glands during active involution
Beccaria, Camila; Velázquez, Natalia S.; Chervaz, Victoria; Pirola, Silvana I.; Baravalle, Celina; Renna, María Sol; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (Elsevier, 2021-04)The aim of this study was to characterize the protein expression of matrix metalloproteinase-2 (MMP-2) and ‐− 9 and their inhibitors (TIMP-1 and -2) in mammary tissue of dairy cows with naturally occurring chronic S. aureus ... -
Panax ginseng extract reduces Staphylococcus aureus internalization into bovine mammary epithelial cells but does not affect macrophages phagocytic activity
Beccaria, Camila; Silvestrini, Paula; Renna, María Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet; Baravalle, Celina (2018-09)Panax ginseng extract (PGe) has been shown to possess immunomodulatory effects in healthy dairy cows at drying off and to trigger an adequate immune response to protect from an experimental intramammary infection (IMI) ... -
Proliferation-apoptosis balance in Staphylococcus aureus chronically infected bovine mammary glands during involution
Andreotti, Carolina Soledad; Pereyra, Elizabet Amanda Lorena; Sacco, Sofía Clara; Baravalle, Celina; Renna, Maria Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (2017-05)The objective of this study was to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences expression of proteins related to regulation of proliferation and apoptosis processes and ... -
Staphylococcus aureus chronic intramammary infection modifies protein expression of transforming growth factor beta (TGF-β) subfamily components during active involution
Andreotti, Carolina Soledad; Pereyra, Elizabet Amanda Lorena; Baravalle, Celina; Renna, Maria Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (2014-02)The objectives of this study were to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences protein expression of TGF-β subfamily components and collagen I and to examine the histomorphometric ...