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Université de Fribourg

Breast milk microbiota: A review of the factors that influence composition

Zimmermann, Petra ; Curtis, Nigel

In: Journal of Infection, 2020, vol. 81, no. 1, p. 17–47

Breastfeeding is associated with considerable health benefits for infants. Aside from essential nutrients, immune cells and bioactive components, breast milk also contains a diverse range of microbes, which are important for maintaining mammary and infant health. In this review, we summarise studies that have investigated the composition of the breast milk microbiota and factors that might...

Université de Fribourg

Study protocol for the ABERRANT study: antibiotic-induced disruption of the maternal and infant microbiome and adverse health outcomes — a prospective cohort study among children born at term

Volery, Maryse ; Scherz, Valentin ; Jakob, William ; Bandeira, Diane ; Deggim-Messmer, Vanessa ; Lauber-Biason, Anna ; Wildhaber, Johannes ; Falquet, Laurent ; Curtis, Nigel ; Zimmermann, Petra

In: BMJ Open, 2020, vol. 10, no. 6, p. e036275

Introduction: There is compositional overlap between the maternal intestinal microbiome, the breast milk microbiome and the infant oral and intestinal microbiome. Antibiotics cause profound changes in the microbiome. However, the effect of intrapartum and early-life antibiotics on the maternal intestinal and breast milk microbiome, and the infant oral and intestinal microbiome, and whether...

Université de Fribourg

Granzyme B attenuates bacterial virulence by targeting secreted factors

López León, Diego ; Matthey, Patricia ; Fellay, Isabelle ; Blanchard, Marianne ; Martinvalet, Denis ; Mantel, Pierre-Yves ; Filgueira, Luis ; Walch, Michael

In: iScience, 2020, vol. 23, no. 3, p. 100932

Pathogenic bacteria secrete virulence factors that interact with the human host to establish infections. The human immune system evolved multiple mechanisms to fight bacterial invaders, including immune proteases that were demonstrated to contribute crucially to antibacterial defense. Here we show that granzyme B degrades multiple secreted virulence mediators from Listeria monocytogenes,...

Université de Fribourg

γδ T cells kill Plasmodium falciparum in a granzyme- and granulysin-dependent mechanism during the late blood stage

Hernández-Castañeda, Maria Andrea ; Happ, Katharina ; Cattalani, Filippo ; Wallimann, Alexandra ; Blanchard, Marianne ; Fellay, Isabelle ; Scolari, Brigitte ; Lannes, Nils ; Mbagwu, Smart Ikechukwu ; Fellay, Benoît ; Filgueira, Luis ; Mantel, Pierre-Yves ; Walch, Michael

In: The Journal of Immunology, 2020, vol. 204, no. 7, p. 1798–1809

Plasmodium spp., the causative agent of malaria, have a complex life cycle. The exponential growth of the parasites during the blood stage is responsible for almost all malaria-associated morbidity and mortality. Therefore, tight immune control of the intraerythrocytic replication of the parasite is essential to prevent clinical malaria. Despite evidence that the particular lymphocyte subset ...

Université de Fribourg

Expression of granulisyn, perforin and granzymes in human milk over lactation and in the case of maternal infection

Twigger, Alecia-Jane ; Küffer, Gwendoline K. ; Geddes, Donna T. ; Filgueria, Luis

In: Nutrients, 2018, vol. 10, no. 9, p. 1230

Human milk has been previously found to contain various types of leukocytes however specific characteristics of these cells, such as whether they contain cytolytic antimicrobial proteins that may induce pathogen directed cell death, are unknown. This project aims to examine the presence and localization of immune proteins such as perforin, granulysin and granzymes in human milk cells at the...

Consortium of Swiss Academic Libraries

Intrauterine rubella virus infection despite expected maternal immunity

Bossart, W. ; Nadal, D.

In: European Journal of Clinical Microbiology and Infectious Diseases, 1998, vol. 17, no. 8, p. 597-599

Consortium of Swiss Academic Libraries

Antimicrobial and cytolytic peptides of venomous arthropods

Kuhn-Nentwig, L.

In: Cellular and Molecular Life Sciences CMLS, 2003, vol. 60, no. 12, p. 2651-2668