Icariin promotes mouse hair follicle growth by increasing insulin-like growth factor 1 expression in dermal papillary cells

2017 ◽  
Vol 42 (3) ◽  
pp. 287-294 ◽  
Author(s):  
Y.-S. Su ◽  
Z.-X. Fan ◽  
S.-E. Xiao ◽  
B.-J. Lin ◽  
Y. Miao ◽  
...  
Keyword(s):  
Growth Factor ◽  
Hair Follicle ◽  
Insulin Like Growth Factor ◽  
Follicle Growth ◽  
Hair Follicle Growth

Controls of Hair Follicle Cycling

2001 ◽  
Vol 81 (1) ◽  
pp. 449-494 ◽  
Author(s):  
K. S. Stenn ◽  
R. Paus
Keyword(s):  
Growth Factor ◽  
Hair Follicle ◽  
Cell Biology ◽  
Transforming Growth Factor ◽  
Gene Families ◽  
Transforming Growth Factor Β ◽  
Follicle Growth ◽  
Modern Biology ◽  
Hair Follicle Growth

Nearly 50 years ago, Chase published a review of hair cycling in which he detailed hair growth in the mouse and integrated hair biology with the biology of his day. In this review we have used Chase as our model and tried to put the adult hair follicle growth cycle in perspective. We have tried to sketch the adult hair follicle cycle, as we know it today and what needs to be known. Above all, we hope that this work will serve as an introduction to basic biologists who are looking for a defined biological system that illustrates many of the challenges of modern biology: cell differentiation, epithelial-mesenchymal interactions, stem cell biology, pattern formation, apoptosis, cell and organ growth cycles, and pigmentation. The most important theme in studying the cycling hair follicle is that the follicle is a regenerating system. By traversing the phases of the cycle (growth, regression, resting, shedding, then growth again), the follicle demonstrates the unusual ability to completely regenerate itself. The basis for this regeneration rests in the unique follicular epithelial and mesenchymal components and their interactions. Recently, some of the molecular signals making up these interactions have been defined. They involve gene families also found in other regenerating systems such as fibroblast growth factor, transforming growth factor-β, Wnt pathway, Sonic hedgehog, neurotrophins, and homeobox. For the immediate future, our challenge is to define the molecular basis for hair follicle growth control, to regenerate a mature hair follicle in vitro from defined populations, and to offer real solutions to our patients' problems.

Promoted Growth of Murine Hair Follicles by Controlled Release of Growth Factors from Biodegradable Hydrogel

2005 ◽  
Vol 288-289 ◽  
pp. 133-138
Author(s):  
Makoto Ozeki ◽  
Yasuhiko Tabata
Keyword(s):  
Growth Factors ◽  
Controlled Release ◽  
Growth Factor ◽  
Hair Follicle ◽  
Skin Color ◽  
Growth Cycle ◽  
Hair Shaft ◽  
Hair Follicles ◽  
Follicle Growth ◽  
Hair Follicle Growth

This study is an investigation to evaluate how the controlled release of different growth factors affects the hair follicle growth of mice in the second anagen stage of hair cycle. For the controlled release of basic fibroblast growth factor (bFGF) and hepatocyte growth factor (HGF), they were incorporating into biodegradable gelatin hydrogels, while a biodegradable collagen hydrogel was used for incorporation of vascular endothelial growth factor (VEGF). After subcutaneous implantation of the different hydrogels incorporating each growth factor or injection of phosphate buffered saline (PBS) containing the same dose of growth factor into the back of mice, the hair follicle growth was evaluated photometrically and histologically based on four parameters: the skin color of reverse side of the implanted or injected site, the number of vessels newly formed, the area occupied by hair follicle tissue, and the hair length. The area in close proximity to the implanted site of hydrogels incorporating growth factor was still dark in color 10 days after application. The hydrogel incorporating any type of growth factor enabled the hair follicles to increase the size, leading significantly enhanced area occupied by hair follicles per unit area of tissue. Implantation of the hydrogels incorporating growth factor increased significantly the number of blood vessels newly formed. Moreover, the length of hair shaft was elongated by the hydrogel incorporating growth factor to a significantly higher extent than the corresponding growth factor. Neither empty gelatin nor collagen hydrogels affected the hair follicle growth. These results indicate that the hydrogel incorporating growth factor induced the anagen-preservable activity. We conclude that the controlled release enabled growth factors to positively act on the hair growth cycle of mice, irrespective of the factor type.

The effect of hepatocyte growth factor/scatter factor on human hair follicle growth

1995 ◽  
Vol 10 (3) ◽  
pp. 229-232 ◽  
Author(s):  
Toshimasa Jindo ◽  
Ryoji Tsuboi ◽  
Ryusuke Imai ◽  
Kenji Takamori ◽  
Jeffrey S. Rubin ◽  
...  
Keyword(s):  
Growth Factor ◽  
Hepatocyte Growth Factor ◽  
Hair Follicle ◽  
Human Hair ◽  
Follicle Growth ◽  
Human Hair Follicle ◽  
Scatter Factor ◽  
Hair Follicle Growth ◽  
Hepatocyte Growth
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