56 citations
,
November 2010 in “Pigment Cell & Melanoma Research” This article discusses the role of neurohormones and neuropeptides in hair follicle pigmentation and outlines promising neuroendocrinological strategies to address greying and damage, but reports no new clinical results.
150 citations
,
October 2010 in “The American Journal of Pathology” This review discusses the pathogenesis and challenges in treating primary cicatricial alopecia, highlighting the need to understand immune protection collapse in hair follicle stem cells; it reports no new clinical results.
42 citations
,
July 2010 in “European Journal of Cell Biology” This study found that thyroid hormones T3 and T4 enhance keratin 15 promoter activity and stimulate CD200 expression in epithelial stem cells from human scalp hair follicles, affecting their growth and differentiation.
30 citations
,
July 2010 in “Experimental Dermatology” This article reviews the role of polyamines in hair follicle growth and discusses potential therapeutic applications but provides no new clinical results.
64 citations
,
January 2010 in “The FASEB Journal” This study found that prolactin is a key regulator of keratin expression in human hair follicles, enhancing specific keratin types and influencing epithelial stem cell-associated keratins.
32 citations
,
January 2010 in “Journal of Dermatological Science” In this study, Waved-5 mice with reduced EGFR signaling showed nearly normal skin and hair follicle function but experienced a transient reduction in subcutaneous fat.
12 citations
,
December 2009 in “Amino Acids” In this study, topical application of α-methylspermidine during the telogen phase in mice induced hair growth by increasing the polyamine pool and mimicking the anagen phase's characteristics.
43 citations
,
September 2009 in “Stem Cells” This study reported that GFP labeling driven by the K15 promoter enables visualization and selection of stem cells in adult human scalp hair follicles for further analysis and manipulation.
132 citations
,
September 2009 in “Experimental Dermatology” This study introduced a new classification system for distinguishing between anagen VI and early catagen stages in human hair follicle organ culture, using it to confirm eflornithine's ability to induce premature catagen.
759 citations
,
February 2009 in “Current Biology” This review summarizes fundamental concepts and recent advancements in hair follicle biology, including insights from mouse models into broader molecular and cellular processes relevant to regeneration and development.
1398 citations
,
May 2008 in “Histochemistry and Cell Biology” This review summarizes the cell type distribution and functional significance of human keratins, emphasizing their roles in tumor diagnosis and potential clinical applications, and reports no new clinical findings.
305 citations
,
March 2008 in “AJP Endocrinology and Metabolism” This article reviews the regulation and roles of spermidine/spermine-N(1)-acetyltransferase (SSAT) in polyamine metabolism and its potential as a target in cancer and other diseases, without reporting new experimental results.
99 citations
,
September 2007 in “The American journal of pathology” This study found that organ-cultured human scalp hair follicles can mimic chemotherapy-induced damage in vivo and serve as a model to explore molecular targets and protective agents for hair follicle preservation.
125 citations
,
February 2007 in “Journal of the American Academy of Dermatology” This study found that adding topical eflornithine to laser hair removal significantly improved the reduction of unwanted facial hair in women over a 6-month period, compared to laser treatment alone.
133 citations
,
July 2006 in “International Journal of Dermatology” This study found that topical eflornithine HCl 13.9% cream effectively reduced facial hair in women, with a favorable safety profile.
128 citations
,
March 2006 in “American Journal of Pathology” The study found that prolactin expressed in human scalp hair follicles acts as an autocrine modulator, inhibiting hair growth and promoting hair follicle regression, which may contribute to hair loss in hyper-prolactinemia patients.
550 citations
,
December 2005 in “The Journal of clinical investigation/The journal of clinical investigation” This study found that bulge cells marked by CD200+ in human hair follicles show high colony-forming efficiency, suggesting successful enrichment of keratinocyte stem cells.
37 citations
,
February 2005 in “Journal of Investigative Dermatology” This research suggests that defects in keratinocyte differentiation due to putrescine accumulation in SSAT transgenic mice lead to skin changes and hair loss, and reducing putrescine can promote hair regrowth.
276 citations
,
January 2005 in “International review of cytology” More research is needed to understand how hair keratins work and their role in hair disorders.
54 citations
,
February 2002 in “Carcinogenesis” This study suggests that activation of polyamine catabolism in K6-SSAT transgenic mice may significantly increase skin tumor development and progression to carcinomas following chemical induction.
54 citations
,
May 2001 in “Journal of Investigative Dermatology” This study suggests that increased putrescine levels may disrupt normal hair follicle development in transgenic mice, leading to hair loss and altered skin structure, yet these mice appear more resistant to skin tumorigenesis.
20 citations
,
April 2000 in “Experimental dermatology” This study observed that overexpression of the enzyme ODC in transgenic mice caused hair loss and skin changes similar to human papular atrichia, suggesting that ODC might be involved in a critical hair follicle function pathway.
1113 citations
,
August 1999 in “The New England Journal of Medicine” This article discusses the biologic and psychosocial significance of hair, the current limitations in hair growth drugs, and anticipates future therapies based on advancing hair follicle research.
24 citations
,
June 1999 in “Mechanisms of Development” This study found that ornithine decarboxylase expression is linked to cell proliferation and differentiation in hair follicle development and growth.
43 citations
,
February 1999 in “Biochemical Journal” This study found that transgenic mice overexpressing the SSAT gene under a metallothionein promoter suffered delayed hair loss and were highly sensitive to polyamine analogues, which led to significant liver changes and mortality.
88 citations
,
August 1998 in “Carcinogenesis” This study found that overexpression of ornithine decarboxylase and activated Ha-ras together led to a high rate of tumor development in a mouse model without additional carcinogens.
124 citations
,
July 1997 in “Journal of Biological Chemistry” This study found that overexpression of an enzyme in transgenic mice led to distorted polyamine levels, resulting in permanent hair loss and female infertility.
71 citations
,
May 1996 in “Journal of Investigative Dermatology” This study found that overexpression of a mutated ornithine decarboxylase transgene in mice led to complete hair loss, which could be prevented or reversed with an ODC inhibitor.
42 citations
,
February 1996 in “Journal of Investigative Dermatology” This study found that spermidine, a polyamine, plays an essential role in hair growth in sheep follicles, while spermine is not required for normal follicle function.
133 citations
,
July 1994 in “Journal of Dermatological Science” In this study, the researchers developed an in vitro model that maintains human hair follicles to grow at in vivo rates and observed that factors like EGF and IGF-I influence hair follicle growth and catagen entry.