Early life trauma (ELT) may increase the risk towards bipolar diso rder (BD) and major depression (MDD), disorders associated with activated neuro-oxidative and neuro-nitrosative stress (O&NS) p athways. It has remained elusive whether ELTs are associated with O&NS and which ELTs are associated with disti nct affective disorder phenotypes. This case-control study examined patients with BD ( n = 68) and MDD ( n ...