Moreover, our results have indicated the ability of these peptides to counteract the inhibitory effect of pulmonary Pseudomonas infection (characterized by high concentrations of LPS, especially in CF) on the migration (wound healing) of CFBE by enhancing IL-8 secretion from these cells, with a higher effectiveness for the diastereomer. The gene discussed is CXCL8; the disease is Pseudomonas infection.