C4 serum levels in newborns of diabetic mothers: relationship with metabolic assessment during pregnancy.

: Serum levels of C4 complement factor are lower in diabetic patients: it is supposed that this finding is related to genetic inheritance factors of diabetes. The purpose is to compare C4 levels in newborns of diabetic mothers with maternal metabolic control during pregnancy. The results suggest that metabolic control could influence the expression of genetic factors of diabetes; in fact C4 serum levels in newborns are significantly higher (p < 0.01) than controls, but not different from those observed in large newborns of non diabetic mothers.