Pathogenic role of oxidative and nitrosative stress in primary biliary cirrhosis

Figure 5 Link between nitric oxide derivatives and inflammatory products is linearly evidenced in this graph reporting the relationship between serum levels of nitrotyrosine and keratin-18. Patients with primary biliary cirrhosis (n = 30) were divided in stages according to liver histology: stage I; stage II; stage III; stage IV. Data adapted from Grattagliano and Portincasa (unpublished). Nitrotyrosine and keratin-18 (K-18) concentrations measured as previously reported[82].