The antinociceptive effect of vitamin K-2 (menatetrenone) in diabetic mice
was examined using a tail-pressure test. Intraperitoneal injection of menat
etrenone (10-100 mg/kg) produced a dose-dependent increase in the nocicepti
ve threshold in diabetic mice. There was no significant difference between
non-diabetic and diabetic mice in the menatetrenone-induced changes in the
nociceptive threshold. The results suggest the therapeutical usefulness of
menatetrenone for treating painful diabetic neuropathy and osteoporosis.