Increased adipose tissue PC-1 protein content, but not tumor necrosis factor-a gene expression, is associated with a reduction of both insulin sensitivity and insulin receptor tyrosine kinase activity. - Frittitta,L.; Youngren,J.; Sbraccia,P.; D'Adamo,M.; Buongiorno,A.; Vigner,R.; Goldfine,ID.; Trischitta,V. (Diabetologia, 1997)