microbial populations

A web application for sample size and power calculation in case-control microbiome studies

When designing a case-control study to investigate differences in microbial composition, it is fundamental to assess the sample sizes needed to detect an hypothesised difference with sufficient statistical power. Our application includes power calculation for (i) a recoded version of the two-sample generalised Wald test of the “HMP” R-package for comparing community composition, and (ii) the Wilcoxon-Mann-Whitney test for comparing OTU-specific abundances between two samples (optional).

Elucidation of the Mode of Action of a New Antibacterial Compound Active against Staphylococcus aureus and Pseudomonas aeruginosa

Nosocomial and community-acquired infections caused by multidrug resistant bacteria represent a major human health problem. Thus, there is an urgent need for the development of antibiotics with new modes of action. In this study, we investigated the antibacterial characteristics and mode of action of a new antimicrobial compound, SPI031 (N-alkylated 3, 6-dihalogenocarbazol 1-(sec-butylamino)-3-(3,6-dichloro-9H-carbazol-9-yl) propan-2-ol), which was previously identified in our group.

Apr/19 11:00
J Schell seminar room UGent-VIB Research Building FSVM Technologiepark 927 9052 Zwijnaarde (Gent)

BIG N2N seminar by Prof. Dr. Jeroen Raes: Towards population-level microbiome monitoring: the Flemish Gut Flora Project

Alterations in the gut microbiota have been linked to various pathologies, ranging from inflammatory bowel disease and diabetes to cancer. Although large numbers of clinical studies aiming at microbiome-based disease markers are currently being performed, our basic knowledge about the normal variability of the human intestinal microbiota and the factors that determine this still remain limited. Here, I will present a large-scale study of the gut microbiome variation in a geographically confined region (Flanders, Belgium).


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