Hairloss Study Abstract: Effect of cyclosporin on hair-existing area of nude mice.
Title
Effect of cyclosporin on hair-existing area of nude mice.
Author
Hozumi Y; Imaizumi T; Kondo S
Address
Department of Dermatology, Yamagata University School of Medicine, Japan.
Source
J Dermatol Sci, 1994 Jul, 7 Suppl:, S33-8
Abstract
We investigated the effect of cyclosporin, as well as minoxidil, testosterone, estradiol
and corticosteroid on the hair growth on the hairy part of nude mice. Aliquots of
solutions of cyclosporin and other agents were applied once per every day topically on the
tails and the lower backs of 5 week-old BALB/c nude mice, for as long as 6 weeks.
Cyclosporin prolonged the hair-existing phase of the hair cycle, but did not change the
term of the hair cycle, i.e., the resting phase was not affected. Minoxidil, testosterone
and estradiol did not influence the hair growth cycle. Combination of cyclosporin and
other agents demonstrated that there was neither additive nor synergistic effect, but a
high dose of corticosteroid inhibit the cyclosporin effect, as well as suppressing
completely the reappearance of the growing phase.