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Quarterly Journal of Microscopical Science, Vol s3-93, 241-246, Copyright © 1952 by Company of Biologists

Cyclic Changes in Polysaccharides of the Papilla of the Hair Follicle

WILLIAM MONTAGNA 1, HERMAN B. CHASE 1, JANET D. MALONE 1, and HELEN P. MELARAGNO 1

1 Brown University, Providence, Rhode Island, U.S.A.

In the skin of the mouse the dermal papilla becomes metachromatic and PAS-reactive on the 4th day after the initiation of growth in the hair follicle. This is a stage of follicle development which immediately precedes hair proliferation. Both metachromasia and PAS reaction remain intense until about 18 days, just preceding catagen, or club formation, when they disappear abruptly. During telogen, or the resting stage, the papilla is neither metachromatic nor PAS-reactive. The metachromasia and the PAS reaction of the dermal papilla during the period of active hair proliferation indicate the presence of at least two polysaccharides which are not detectable during the remainder of the cycle.






© The Company of Biologists Ltd 1952