Here is another post as the field seems to progress so fast with a new study on enterotypes of the human gut microbiome from
22 newly sequenced faecal metagenomes of individuals from four countries with previously published data sets, here we identify three robust clusters (referred to as enterotypes hereafter) that are not nation or continent specific.
The 3 clusters are Bacteroides (enterotype 1), Prevotella (enterotype 2) and Ruminococcus (enterotype 3) – no idea if these are under selective pressure from the host (genes!), from enviroment (antibiotics!) or from microbial competitors. When we look, however, at another study published also last week at Science magazine, it seems that at least one cluster has it’s own trick to get the right of residence by synthesizing a symbiosis factor. Will the bacterial flora protect you from you allergies? weiterlesen
A Spiegel online article yesterday about a study of indoor and outdoor housed pigs attributes the results to the development of allergy
Kinder vom Land haben demnach ein besseres Immunsystem und weniger Allergien als Stadtkinder, weil sie früher Kontakt haben mit all den Bakterien, wie sie in Tierställen vorkommen.
Unfortunately the original paper finds something completely different Clean pigs and less clean journalism weiterlesen
Yahoo News writes “Doubts cast on hygiene hypothesis“. As far as I know YN highlights the first experimental study of the hygiene hypothesis. Although the authors could achieve a reduction of respiratory infections by controlled randomized hygiene intervention, there was no effect on later asthma or allergy.
I have written earlier about the hygiene hypothesis and my doubts that more or less “hygiene” influences the development of allergy (blog | paper). As we are further swamped with regular statements like Believe me, it ‘s not hygiene weiterlesen