Tissue Augmentation

The introduction of cross-linked, water-insoluble gels of hyaluronan for tissue augmentation, a procedure sometimes referred to as viscoaugmentation (56), has increased the use of dermal fillers in aesthetic medicine. Cross-linked hyaluronan is considered an important improvement over the previously available collagenbased fillers because it does not require skin testing prior to treatment, does not require overcorrection during the injection, and, moreover, because cross-linked hyaluronan can...

Effect of Intestinal Microbiota on the Immune System Clinical Trials

There is increasing evidence that the interaction between the intestinal microbiota and the intestinal epithelial and immune cells plays a key role in the postnatal development of the immune system. First studies with probiotics (74) and synbio-tics (40) demonstrate effects during infancy, and studies regarding the vaccination response in the elderly (75) indicate that the prebiotics might also influence the immune system. In particular, the animal experiments with prebiotics described above...