scholarly journals Stem cells from human hair follicles: first mechanical isolation for immediate autologous clinical use in androgenetic alopecia and hair loss

2017 ◽  
Vol 4 (7) ◽  
pp. 58-58 ◽  
Author(s):  
Pietro Gentile ◽  
Maria G. Scioli ◽  
Alessandra Bielli ◽  
Augusto Orlandi ◽  
Valerio Cervelli
Keyword(s):  
Stem Cells ◽  
Hair Loss ◽  
Human Hair ◽  
Hair Follicles ◽  
Androgenetic Alopecia ◽  
Clinical Use ◽  
Mechanical Isolation

Disorders of Hair

2013 ◽  
Author(s):  
James Q Del Rosso
Keyword(s):  
Hair Loss ◽  
Alopecia Areata ◽  
Hair Growth ◽  
Growth Cycle ◽  
Hair Follicles ◽  
Common Type ◽  
Diagnosis And Treatment ◽  
Basic Knowledge ◽  
Androgenetic Alopecia ◽  
Broad Overview

A basic knowledge of the hair growth cycle is needed to evaluate disorders of hair growth. This chapter presents a broad overview of the physiology and evaluation of hair growth, as well as discussions of specific types of alopecia. The epidemiology, pathogenesis, diagnosis, and treatment of androgenetic alopecia, the most common type of nonscarring hair loss, are covered. Diffuse hair shedding is generalized hair loss over the entire scalp. Diagnosis and treatment of telogen effluvium, anagen arrest (anagen effluvium), and other causes of diffuse hair shedding are covered in detail. Alopecia areata, typically characterized by patchy hair loss; cicatricial alopecia, which results from permanent scarring of the hair follicles; and miscellaneous causes of hair loss are also discussed. Tables list the causes of diffuse and cicatricial alopecia, telogen effluvium, and miscellaneous chemicals and categories of drugs that can cause alopecia, as well as miscellaneous causes of hair loss. Included is an algorithm outlining the approach to diagnosing nonscarring alopecia, as well as a variety of clinical photographs. This review contains 9 highly rendered figures, 6 tables, and 42 references.

scholarly journals The local hypothalamic–pituitary–adrenal axis in cultured human dermal papilla cells

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Eun Young Lee ◽  
You Jin Nam ◽  
Sangjin Kang ◽  
Eun Ju Choi ◽  
Inbo Han ◽  
...  
Keyword(s):  
Hpa Axis ◽  
Hair Loss ◽  
Human Hair ◽  
Stress Hormones ◽  
Dermal Papilla ◽  
Hair Shaft ◽  
Hair Follicles ◽  
Follicle Cells ◽  
Dermal Papilla Cells ◽  
Underlying Mechanisms

Abstract Background Stress is an important cause of skin disease, including hair loss. The hormonal response to stress is due to the HPA axis, which comprises hormones such as corticotropin releasing factor (CRF), adrenocorticotropic hormone (ACTH), and cortisol. Many reports have shown that CRF, a crucial stress hormone, inhibits hair growth and induces hair loss. However, the underlying mechanisms are still unclear. The aim of this study was to examine the effect of CRF on human dermal papilla cells (DPCs) as well as hair follicles and to investigate whether the HPA axis was established in cultured human DPCs. Results CRF inhibited hair shaft elongation and induced early catagen transition in human hair follicles. Hair follicle cells, both human DPCs and human ORSCs, expressed CRF and its receptors and responded to CRF. CRF inhibited the proliferation of human DPCs through cell cycle arrest at G2/M phase and induced the accumulation of reactive oxygen species (ROS). Anagen-related cytokine levels were downregulated in CRF-treated human DPCs. Interestingly, increases in proopiomelanocortin (POMC), ACTH, and cortisol were induced by CRF in human DPCs, and antagonists for the CRF receptor blocked the effects of this hormone. Conclusion The results of this study showed that stress can cause hair loss by acting through stress hormones. Additionally, these results suggested that a fully functional HPA axis exists in human DPCs and that CRF directly affects human DPCs as well as human hair follicles under stress conditions.

scholarly journals The local hypothalamic–pituitary–adrenal axis in cultured human dermal papilla cells

2020 ◽  
Author(s):  
Eun Young Lee ◽  
You Jin Nam ◽  
Sangjin Kang ◽  
Eun Ju Choi ◽  
Inbo Han ◽  
...  
Keyword(s):  
Hpa Axis ◽  
Hair Loss ◽  
Human Hair ◽  
Stress Hormones ◽  
Dermal Papilla ◽  
Hair Shaft ◽  
Hair Follicles ◽  
Follicle Cells ◽  
Dermal Papilla Cells ◽  
Underlying Mechanisms

Abstract Background: Stress is an important cause of skin disease, including hair loss. The hormonal response to stress is due to the HPA axis, which comprises hormones such as corticotropin releasing factor (CRF) , adrenocorticotropic hormone (ACTH) , and cortisol. Many reports have shown that CRF, a crucial stress hormone, inhibits hair growth and induces hair loss. However, the underlying mechanisms are still unclear. The aim of this study was to examine the effect of CRF on human dermal papilla cells (DPCs) as well as hair follicles and to investigate whether the HPA axis was established in cultured human DPCs.Results: CRF inhibited hair shaft elongation and induced early catagen transition in human hair follicles. Hair follicle cells, both human DPCs and human ORSCs, expressed CRF and its receptors and responded to CRF. CRF inhibited the proliferation of human DPCs through cell cycle arrest at G2/M phase and induced the accumulation of reactive oxygen species (ROS) . Anagen-related cytokine levels were downregulated in CRF-treated human DPCs. Interestingly, increases in proopiomelanocortin (POMC) , ACTH, and cortisol were induced by CRF in human DPCs, and antagonists for the CRF receptor blocked the effects of this hormone. Conclusion: The results of this study showed that stress can cause hair loss by acting through stress hormones. Additionally, these results suggested that a fully functional HPA axis exists in human DPCs and that CRF directly affects human DPCs as well as human hair follicles under stress conditions.

scholarly journals Identifying novel strategies for treating human hair loss disorders: Cyclosporine A suppresses the Wnt inhibitor, SFRP1, in the dermal papilla of human scalp hair follicles

PLoS Biology ◽  
2018 ◽  
Vol 16 (5) ◽  
pp. e2003705 ◽  
Author(s):  
Nathan J. Hawkshaw ◽  
Jonathan A. Hardman ◽  
Iain S. Haslam ◽  
Asim Shahmalak ◽  
Amos Gilhar ◽  
...  
Keyword(s):  
Hair Loss ◽  
Cyclosporine A ◽  
Human Hair ◽  
Scalp Hair ◽  
Dermal Papilla ◽  
Hair Follicles ◽  
Human Scalp Hair ◽  
Wnt Inhibitor
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