References: Hair growth and hair loss
J Dermatol Surg Oncol. 1981 Jun;7(6):477-80.
Predicting hair growth for hair transplantations.
Norwood OT.
Even with proper surgical technique and no complications, some individuals do not seem to grow transplanted hair as well as others. In order to see if it is possible to identify such individuals prior to surgery and the reasons for their peculiarity, 130 consecutively new patients were stated for study and 100 were eventually available for study with special reference to twelve likely factors. Of the twelve, five, namely, looseness of scalp, thickness of scalp, density of transplanted hair, quality of grafts, and scarring, were found to have predictive value in foretelling eventual quantity of hair growth.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7251958&dopt=Abstract
J Cutan Pathol. 1994 Aug;21(4):339-42.
DNA determination of human hair bulbs in normal and androgenetic alopecia.
Villena A, Alcaraz MV, Perez de Vargas I.
Department of Normal and Pathological Morphology, Faculty of Medicine, University of Malaga, Spain.
We carried out a cytophotometric study of the DNA content of matrix cells from normal hair follicles and those affected by androgenetic alopecia (early and established baldness), using the Feulgen technique. We thereby obtained a 2C reference value from lymphocyte nuclei from normal skin, from which we established a 2C-4C and 4C DNA content. The results obtained showed 71.75% of matrix cells in normal scalp to have a 2C content, while the remaining 28.25% was distributed between the values of 2C-4C and 4C. However, in early baldness, the number of 2C cells dropped to 48%, with a notable increase in cell populations with a 2C-4C and 4C content, which varied from 29.45% and 22.55% respectively. Finally, in established baldness, the 2C values decreased to as low as 29.56%, with the percentage of cells with a 2C-4C content reaching 38.71% and those of 4C, 31.73%.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7798390&dopt=Abstract
J Am Acad Dermatol. 1979 Aug;1(2):121-2.
A stain for plucked anagen hairs.
Baden HP, Kubilus J, Baden L.
Anagen and telogen plucked hairs may be difficult to distinguish based on their microscopic appearance. The root ends of plucked anagen hairs develop a red color when stained with 4-dimethylaminocinnamaldehyde, while those of plucked telogen hairs do not. This is the result of a reaction with citrulline-containing proteins in the internal root sheath. This histochemical stain provides a simple and accurate means of determining the telogen/anagen ratio in plucked hairs.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=93116&dopt=Abstract
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