The NGF expression was also shown to be up-regulated in other inflammatory diseases such as asthma (Frossard et al., 2004), arthritis (Manni and Aloe, 1998) and psoriasis (Raychaudhuri and Raychaudhuri, 2004), suggesting a role for this neurotrophin in inflammatory diseases. The gene discussed is BDNF; the disease is Arthritis.