☆ 4.7 Article

Metabolites of non-aureus staphylococci affect the ability of Staphylococcus aureus to adhere to and internalize into bovine mammary epithelial cells

VETERINARY RESEARCH (2023)

Related references

Note: Only part of the references are listed.

Article Agriculture, Dairy & Animal Science

Bovine-associated staphylococci and mammaliicocci trigger T-lymphocyte proliferative response and cytokine production differently

Fernando N. Souza et al.

Summary: This study investigated whether different staphylococcal and mammaliicoccal species and strains can induce B and T lymphocyte proliferation and production of interleukin-17A (IL-17A) and interferon-gamma (IFN-gamma) in peripheral blood mononuclear cells (PBMCs) of nulliparous, primiparous, and multiparous dairy cows. Flow cytometry was used to measure lymphocyte proliferation, specific antibodies were used to identify different lymphocyte populations, and the PBMC culture supernatant was used to measure IL-17A and IFN-gamma production. The results showed that certain strains of Staphylococcus aureus and Staphylococcus chromogenes triggered T lymphocyte proliferation and increased IL-17A and IFN-gamma production. Conversely, Mammaliicoccus fleurettii and other strains had no effect on lymphocyte proliferation. Multiparous cows had higher B lymphocyte proliferation and cytokine production compared to primiparous and nulliparous cows. Phytohemagglutinin M-form specifically stimulated T cell proliferation.

JOURNAL OF DAIRY SCIENCE (2023)

Add to Collection

Article Veterinary Sciences

Priming of the murine mammary gland with Staphylococcus chromogenes IM reduces bacterial growth of Streptococcus uberis: a proof-of-concept study

Niels Vander Elst et al.

Summary: Bovine mastitis, caused by Streptococcus uberis, has significant economic consequences. In this study, priming the murine mammary gland with Staphylococcus chromogenes IM was able to reduce the growth of S. uberis, potentially through the activation of the innate immune system by increasing IL-8 and LCN2.

VETERINARY RESEARCH (2023)

Add to Collection

Article Agriculture, Dairy & Animal Science

Distinct behavior of bovine-associated staphylococci species in their ability to resist phagocytosis and trigger respiratory burst activity by blood and milk polymorphonuclear leukocytes in dairy cows

Rodrigo M. Souza et al.

Summary: This study investigated the ability of different staphylococcal species to evade host defense mechanisms in dairy cows, specifically focusing on phagocytosis resistance and triggering of reactive oxygen species (ROS) production. The findings suggest that different staphylococcal species have varying abilities to resist phagocytosis and induce ROS production, which may contribute to their persistence and inflammation in causing mastitis.

JOURNAL OF DAIRY SCIENCE (2022)

Add to Collection

Article Microbiology

Novel Quantitative Assay to Describe In Vitro Bovine Mastitis Bacterial Pathogen Inhibition by Non-aureus Staphylococci

Bruno Toledo-Silva et al.

Summary: This paper presents a new quantitative method for evaluating and quantifying the in vitro growth inhibition of mastitis-related bacteria. The method can accurately quantify the differences in growth inhibition among different NAS isolates.

PATHOGENS (2022)

Add to Collection

Article Agriculture, Dairy & Animal Science

Short communication: Association between the accessory gene regulator (agr) group and the severity of bovine mastitis caused by Staphylococcus aureus

Bruna F. Rossi et al.

Summary: The study revealed a strong association between the agr type of Staphylococcus aureus and the type of mastitis, indicating that understanding the genetic profiles of S. aureus could serve as an additional tool in controlling this disease.

JOURNAL OF DAIRY SCIENCE (2021)

Add to Collection

Article Veterinary Sciences

Colonization and local host response following intramammary Staphylococcus chromogenes challenge in dry cows

Lisa Beuckelaere et al.

Summary: This study challenged cow udders with S. chromogenes IM during the dry period and found that colonized quarters had higher quarter somatic cell counts in early lactation. Inoculated quarters had lower IL-6 and IL-10 concentrations in the dry period, with higher IFN-γ levels in colonized quarters. Additionally, IgG2 levels were higher in inoculated quarters compared to non-inoculated quarters, with an IgG2/IgG1 ratio above 1 on average.

VETERINARY RESEARCH (2021)

Add to Collection

Article Veterinary Sciences

Bovine-associated non-aureus staphylococci suppress Staphylococcus aureus biofilm dispersal in vitro yet not through agr regulation

Bruno Toledo-Silva et al.

Summary: The formation of biofilms in Staphylococcus aureus strains causing subclinical mastitis in dairy cows is influenced by environmental signals and communication systems, with different staphylococci species impacting S. aureus biofilm formation and dispersion. Specifically, S. chromogenes enhances biofilm formation of an agr-positive S. aureus strain, while NAS isolates suppress biofilm dispersion of S. aureus. Additionally, the effects on biofilm formation and dispersion do not depend on the capacity of NAS to repress the agr system.

VETERINARY RESEARCH (2021)

Add to Collection

Article Veterinary Sciences

Metabolites of bovine-associated non-aureus staphylococci influence expression of Staphylococcus aureus agr-related genes in vitro

Bruno Toledo-Silva et al.

Summary: Communication via quorum sensing between non-aureus staphylococci and Staphylococcus aureus in the bovine mammary gland is underexplored. Results showed that NAS can regulate the QS system of S. aureus, with S. chromogenes and S. simulans being more effective than S. epidermidis. NAS metabolites and supernatant had greater regulatory activity over S. aureus virulence genes than NAS cells themselves.

VETERINARY RESEARCH (2021)

Add to Collection

Article Infectious Diseases

Analysis of virulence genes and accessory gene regulator (agr) types among methicillin-resistant Staphylococcus aureus strains in Iran

Sara Cheraghi et al.

JOURNAL OF GLOBAL ANTIMICROBIAL RESISTANCE (2017)

Add to Collection

Article Agriculture, Dairy & Animal Science

Interaction between bovine-associated coagulase-negative staphylococci species and strains and bovine mammary epithelial cells reflects differences in ecology and epidemiological behavior

F. N. Souza et al.

JOURNAL OF DAIRY SCIENCE (2016)

Add to Collection

Article Microbiology

Cross-Talk between Staphylococcus aureus and Other Staphylococcal Species via the agr Quorum Sensing System

Jaime Canovas et al.

FRONTIERS IN MICROBIOLOGY (2016)

Add to Collection

Article Veterinary Sciences

Local host response following an intramammary challenge with Staphylococcus fleurettii and different strains of Staphylococcus chromogenes in dairy heifers

Kristine Piccart et al.

VETERINARY RESEARCH (2016)

Add to Collection

Review Agriculture, Dairy & Animal Science

Invited review: Effect, persistence, and virulence of coagulase-negative Staphylococcus species associated with ruminant udder health

W. Vanderhaeghen et al.

JOURNAL OF DAIRY SCIENCE (2014)

Add to Collection

Article Biotechnology & Applied Microbiology

Inhibition of Staphylococcus aureus Invasion into Bovine Mammary Epithelial Cells by Contact with Live Lactobacillus casei

Damien S. Bouchard et al.

APPLIED AND ENVIRONMENTAL MICROBIOLOGY (2013)

Add to Collection

Article Agriculture, Dairy & Animal Science

Some coagulase-negative Staphylococcus species affect udder health more than others

K. Supre et al.

JOURNAL OF DAIRY SCIENCE (2011)

Add to Collection

Article Multidisciplinary Sciences

Bacterial- Epithelial Contact Is a Key Determinant of Host Innate Immune Responses to Enteropathogenic and Enteroaggregative Escherichia coli

Lindsey A. Edwards et al.

PLOS ONE (2011)

Add to Collection

Article Immunology

Differential abilities of capsulated and noncapsulated Staphylococcus aureus isolates from diverse agr groups to invade mammary epithelial cells

Fernanda R. Buzzola et al.

INFECTION AND IMMUNITY (2007)

Add to Collection

Article Microbiology

In vitro growth inhibition of major mastitis pathogens by Staphylococcus chromogenes originating from teat apices of dairy heifers

S De Vliegher et al.

VETERINARY MICROBIOLOGY (2004)

Add to Collection

Review Microbiology

Regulation of virulence determinants in Staphylococcus aureus:: complexity and applications

S Bronner et al.

FEMS MICROBIOLOGY REVIEWS (2004)

Add to Collection

© Peeref 2019-2024. All rights reserved.