Trichilemmal keratinisation: a causal factor in loosening the murine telogen club hair from the trichilemmal sac.
AUTOR(ES)
Vandevelde, C
RESUMO
A quantitative histochemical study was carried out on the distribution of protein thiol and disulphide groups in the telogen follicle of mice. The histochemical demonstration of reactive groups was achieved by a method first described by Sippel (1973). The histological observations support former views on trichilemmal keratinisation that trichilemmal cells are the main site of thiol groups and that the hair club itself appears to be the most prominent site of disulphide cross linkages. The histophotometric data reveal an increase in thiol-disulphide conversion which coincides with the development of a succeeding hair generation in the trichilemmal sac of the telogen follicle. On the basis of this observation, it is suggested that trichilemmal keratinisation is a causal factor in loosening the old club hair from its trichilemmal sac, a process which is probably similar to the sloughing of cornified epidermal cells.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1164357Documentos Relacionados
- Properties of the earliest clonogenic hemopoietic precursors to appear in the developing murine yolk sac.
- The Ovule and the Embryo Sac.
- An unusual foreign body in the preputial sac.
- Dacryolith formation around an eyelash retained in the lacrimal sac.
- Details of the ultrastructure of Rickettsia prowazekii grown in the chick yolk sac.