Further, other observed multifactorial properties of bacterial NDKs include inhibition of danger-signal-eATP/P2X7-receptor mediated host cell and the bacterial killing as it has been also demonstrated in the opportunistic oral pathogen Porphyromonas gingivalis and lately in infections with Chlamydia trachomatis, or with the protozoan Leishmania amazonensis, thus contributing to the pathogens’ survival1, 10, 16, 18. This evidence concerns the gene P2RX7 and infection.