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N1 derived lipoteichoic acid alleviates insulin resistance in association with modulation of the gut microbiota and amino acid metabolism.
Food Funct
January 2025
College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China.
This study aimed to investigate the effects of heat-killed N1 (HK-N1) and lipoteichoic acid (LTA) derived from it on alleviating insulin resistance by modulating the gut microbiota and amino acid metabolism. High-fat diet (HFD)-fed mice were administered live bacteria or HK-N1, and the results demonstrated that HK-N1 significantly reduced epididymal adipocyte size and serum low density lipoprotein-cholesterol, and improved insulin resistance by increasing the YY peptide and glucagon-like peptide levels. HK-N1 also modulated the gut microbiome composition, enhancing microbiota uniformity and reducing the abundance of , and .
View Article and Find Full Text PDFEvaluating the Role of Viable Cells, Heat-Killed Cells or Cell-Free Supernatants in Bacterial Biocontrol of Fungi: A Comparison Between Lactic Acid Bacteria and .
Microorganisms
January 2025
Department of Food Science and Technologies for Sustainable Agro-Food Chain (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, PC, Italy.
This study investigated whether viable cells, dead cells or cell-free supernatants (CFS) were responsible for the biocontrol effect of strains from two important bacterial genera, and , known for their antifungal properties against plant pathogens and food spoilage microorganisms. Specifically, the capability of these strains to produce extracellular hydrolytic enzymes on specified media was assessed, along with their effectiveness in inhibiting the mycelial growth of several phytopathogenic fungi (, , and ) using dual culture plate assays. Results from these inhibition assays revealed that PF05 and LMG 23520 strains were the most effective in suppressing fungal growth, especially .
View Article and Find Full Text PDFMixed lipopeptide-based mucosal vaccine candidate induces cross-variant immunity and protects against SARS-CoV-2 infection in hamsters.
Immunohorizons
January 2025
Department of Surgery, Faculty of Medicine and Dentistry, College of Health Sciences, University of Alberta, Edmonton, AB, Canada.
The global dissemination of SARS-CoV-2 led to a worldwide pandemic in March 2020. Even after the official downgrading of the COVID-19 pandemic, infection with SARS-CoV-2 variants continues. The rapid development and deployment of SARS-CoV-2 vaccines helped to mitigate the pandemic to a great extent.
View Article and Find Full Text PDFMicrobiota translocation following intestinal barrier disruption promotes Mincle-mediated training of myeloid progenitors in the bone marrow.
Immunity
January 2025
Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain. Electronic address:
Impairment of the intestinal barrier allows the systemic translocation of commensal bacteria, inducing a proinflammatory state in the host. Here, we investigated innate immune responses following increased gut permeability upon administration of dextran sulfate sodium (DSS) in mice. We found that Enterococcus faecalis translocated to the bone marrow following DSS treatment and induced trained immunity (TI) hallmarks in bone-marrow-derived mouse macrophages and human monocytes.
View Article and Find Full Text PDFAssessment of heat-killed expressing Chikungunya virus E2 protein as a candidate vaccine for dual protection against Chikungunya virus and .
Front Immunol
January 2025
Nanobioscience Group, Agharkar Research Institute, Pune, India.
The Chikungunya virus (CHIKV) is a mosquito-borne virus with a long history of recurring epidemics transmitted through mosquitoes. The rapid spread of CHIKV has intensified the need for potent vaccines. Escherichia coli (), a vital part of human gut microbiota, is utilized in recombinant DNA technology for cloning.
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