Elevated PC-1 content in cultured skin fibroblasts correlates with decreased in vivo and in vitro insulin action in nondiabetic subjects: evidence that PC-1 may be an intrinsic factor in impaired insulin receptor signaling. - Frittitta,L.; Spampinato,D.; Solini,A.; Nosadini,R.; Goldfine,ID.; Vigneri,R.; Trischitta,V. (Diabetes, 1998)