“…Some studies have shown some negative correlation of -syn with age (Mollenhauer et al, 2008;Tokuda et al, 2006;Ohrfelt et al, 2009;Noguchi-Shinohara et al, 2009;Parnetti et al, 2011), whereas one study (Hong et al, 2010) reported an opposite trend. In some studies reduced levels of -syn in CSF from PD and DLB have been detected compared to controls or AD (Tokuda et al, 2006;Mollenhauer et al, 2008;Tokuda et al, 2010;Kasuga et al, 2010;Hong et al, 2010;Parnetti et al, 2011). Conversely, in other studies no significant difference between groups was observed (Öhrfelt et al, 2009;NoguchiShinohara et al, 2009;Spies et al, 2009).…”