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References: Hair growth and hair loss







Aust Orthod J. 1995 Oct;14(1):18-20.
Correlation of sexual maturation with stature and body weight & dental maturation in southern Chinese girls.

So LL.

Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Hong Kong, Hong Kong.

Correlation of stature and body weight and the eruption of permanent teeth with four sexual maturity criteria (menarche, pubic hair, axillary hair and breast development) was studied in 102 Southern Chinese girls aged between 11 years, 9 months and 12 years, 3 months and born and brought up in Hong Kong. With respect to all four selected criteria, the early sexual maturers were significantly taller and heavier and had more erupted permanent teeth with p values ranging from < 0.01 to < 0.001 levels than the late maturers.

online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9063122&dopt=Abstract




J Comp Neurol. 1997 Mar 24;379(4):603-16.
Neurofilament proteins in avian auditory hair cells.

Oesterle EC, Lurie DI, Rubel EW.

Department of Otolaryngology and Head and Neck Surgery, Virginia Merrill Bloedel Hearing Research Center, University of Washington, Seattle 98195, USA.

The distribution of middle-weight neurofilament protein (NF-M), an intermediate filament of neurons, was examined in the developing and mature avian inner ear by using immunocytochemical techniques. NF-M was detected in auditory hair cells and VIIIth cranial nerve neurons. NF-M-positive hair cells are first detected at embryonic day 11 (E11) in superior hair cells in the mid-proximal (mid-frequency) region of the chicken basilar papilla. With time, increasing numbers of hair cells express NF-M. Two developmental gradients occur: 1) a radial gradient, in which superior hair cells are labeled first, and progressively more inferiorly located hair cells are labeled during ontogeny, and 2) a longitudinal gradient, in which hair cells in the mid-proximal region are labeled first, and then progressively more distal (low-frequency) hair cells are labeled. There is also a small proximally directed progression of NF-M expression. By E19, NF-M-positive hair cells are found throughout the distal and mid-proximal regions, and this expression is maintained through 3 weeks posthatching. By 22 weeks posthatching, NF-M staining in hair cells is markedly diminished; staining is seen in only a few tall hair cells in the distal one-fourth of the papilla and in short hair cells in the distal one-half of the papilla. NF-M is never expressed by hair cells at the proximal (high-frequency) end of the papilla at any time examined. These findings suggest that some cell types that have traditionally been classified as nonneural may express neurofilament and that the basilar papilla of the neonatal chicken is not morphologically mature.

online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9067846&dopt=Abstract




Acta Otolaryngol. 1977 Sep-Oct;84(3-4):238-51.
A note on development of Corti's organ.

Hinojosa R.

The structure and postnatal transformation of Kolliker's organ in the cat were studied by means of both light and electron microscopes. Kolliker's organ, which is located in the inner sulcus area of the cochlear duct during embryonic development of the kitten, appeared to undergo a major transformation during the first 30 days after birth. On the level of the organ as a whole the possible nature of this transformation is briefly discussed. On the cellular level, the transformation of this organ was found to involve a process of cellular autophagocytosis. Kolliker's organ consists of numerous tightly packed, tall columnar cells filling the inner sulcus. Autophagic vacuoles containing cell organelles were observed in these cells in all stages of transformation of the organ. Cellular autophagocytosis reduced the number of cells present in each section from approximately 50 in the newborn, to approximately 12 in the 30-day-old kitten. The apparent transformation of Kolliker's organ was observed as progressing from base to apex and from the limbus to the inner hair cell. The relationship of the tectorial membrane to Kolliker's organ and that of the tectorial membrane to the area in and around the inner hair cells are discussed.

online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=906817&dopt=Abstract





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