70 citations
,
January 2009 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” This study explored the interaction between androgen and Wnt signaling in dermal papilla cells, targeting the effects of androgen on hair growth reduction.
98 citations
,
December 2008 in “Journal of Investigative Dermatology” This review discusses the possible impacts of prolactin on skin conditions like psoriasis, alopecia, and stress-related dermatoses, emphasizing the need for further research to explore its therapeutic potential.
140 citations
,
October 2008 in “Nature Genetics” 160 citations
,
July 2008 in “Experimental dermatology” This review discusses the protective effects and mechanisms of melatonin in skin and suggests potential therapeutic applications in cutaneous medicine, reporting no new clinical findings.
159 citations
,
November 2007 in “American Journal of Pathology” In this study, researchers found that substance P triggered premature catagen development and immune changes in human scalp hair follicles, providing a possible biological link between stress and hair loss conditions like telogen effluvium and alopecia areata.
39 citations
,
November 2007 in “Experimental dermatology” This study found that prostaglandin receptors are widely expressed in hair follicles, suggesting a complex network of prostanoid pathways involved in hair growth control.
22 citations
,
November 2007 in “Journal of Investigative Dermatology Symposium Proceedings” This presentation reviews recent discoveries about signaling mechanisms in hair follicles and their potential influence on hair cycle control and melanogenesis, without presenting new experimental results.
65 citations
,
August 2007 in “Experimental Dermatology” This study found that prostaglandin metabolism enzymes are present in human hair follicles, suggesting a potential role in hair growth and differentiation, with some expression differences between men and women.
71 citations
,
May 2007 in “The FASEB journal” This study found that human hair follicles express erythropoietin and its receptor, suggesting these follicles may use erythropoietin signaling to modulate apoptosis under stress conditions like hypoxia and chemotherapy.
34 citations
,
March 2007 in “Biochemical and Biophysical Research Communications” This study suggests that decreased expression of thioredoxin reductase 1 in hair follicle cells may contribute to glucocorticoid resistance in some alopecia areata patients by affecting the intracellular redox system.
48 citations
,
March 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” This study observed that retinoic acid biosynthesis and signaling in hair follicles have a spatial and temporal regulation linked to distinct stages of the hair cycle in mice.
305 citations
,
February 2007 in “Hormone and metabolic research” This review discusses the roles of androgens and estrogens in skin functions and disorders, and highlights the use of estrogen-progestin treatments and anti-androgens in managing hirsutism and acne, without reporting new results.
60 citations
,
January 2007 in “Human Genetics” In this study, researchers found that while the SNP rs6152 is strongly associated with androgenetic alopecia, the GGN triplet repeat is not, suggesting the causative variant is likely a non-coding one.
54 citations
,
January 2007 in “The Journal of Steroid Biochemistry and Molecular Biology” This study found that hair follicle homeostasis in mice requires vitamin D receptor expression in keratinocytes, independent of its ligand activation.
10 citations
,
January 2007 in “Dermatology” This study reported higher levels of certain proteins, such as DAX-1, SRY, and WT-1, in the bald scalp of patients with androgenetic alopecia.
510 citations
,
August 2006 in “Endocrinology” This minireview discusses a proposed model of the vitamin D receptor that explains how 1alpha,25(OH)2D3 can mediate both genomic and rapid responses through different ligand shapes and cellular locations, without presenting new research findings.
159 citations
,
July 2006 in “Endocrine Reviews” This article discusses the influence of estrogens on hair follicle growth and metabolism, suggesting a significant role alongside androgens in hair growth control but reports no new clinical results.
41 citations
,
June 2006 in “Journal of Investigative Dermatology” This study identified three genes with significantly higher expression in androgen-sensitive beard dermal papilla cells compared to androgen-insensitive scalp cells, suggesting potential novel signaling pathways in hair follicles.
23 citations
,
June 2006 in “Journal of Investigative Dermatology” Men with baldness have higher levels of specific proteins, suggesting local hormone production may play a role in hair loss.
24 citations
,
February 2006 in “Chinese Medical Journal” This study found that dermal papilla cells cultured in vitro can promote hair follicle regeneration and maintain hair growth, with stronger ET-1 and SCF expression enhancing this regenerative ability.
58 citations
,
January 2006 in “Skin Pharmacology and Physiology” This study found that testosterone and 5α-dihydrotestosterone induced apoptosis in dermal papilla cells from nonbalding scalp regions, suggesting a high androgen stimulus can trigger cell death related to androgenetic alopecia.
67 citations
,
August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” This study found that in vitro, beard dermal papilla cells stimulated keratinocyte proliferation via androgen-dependent growth factors, while androgenetic alopecia cells released TGF-β1, inhibiting keratinocyte growth.
60 citations
,
August 2005 in “Endocrinology” This study suggests that αMSH may play a regulatory role in human dermal papilla cells, potentially influencing immune and inflammatory responses in hair follicles, which could contribute to inflammatory alopecia.
489 citations
,
June 2005 in “The FASEB Journal” This study found that human scalp hair follicles can respond to corticotropin releasing hormone stimulation similarly to the classical HPA axis, including up-regulating cortisol production and activating neuroendocrine feedback loops.
72 citations
,
March 2005 in “British Journal of Dermatology” In this case series, researchers observed androgenetic alopecia in 20 prepubertal children with a strong genetic predisposition, despite the condition typically not occurring before puberty.
450 citations
,
January 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” This article reviews follicular melanogenesis, detailing how melanin synthesis and its regulation in hair follicles depend on a complex interplay of cellular and molecular mechanisms, but reports no new clinical findings.
5 citations
,
December 2004 in “Dermatology” This review describes two cases of young women with primary amenorrhea and hyperandrogenemia, suggesting that adrenal tumors should be considered in patients with significantly elevated circulating testosterone levels.
147 citations
,
April 2004 in “PubMed” This study identifies specific localization patterns of androgen, estrogen, and progesterone receptors in human skin, which could be crucial for understanding their roles in skin biology and pathology.
130 citations
,
June 2003 in “Journal of Investigative Dermatology Symposium Proceedings” This study found that estrogen receptor beta, not alpha, is the main mediator of estrogen action in human skin and hair follicles, suggesting a distinct role in these tissues.
289 citations
,
May 2003 in “Journal of Investigative Dermatology” This study demonstrates that human skin is capable of steroid hormone synthesis, but its role in androgenic skin disorders like acne and alopecia is yet to be clarified.
233 citations
,
November 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” This review explores androgen metabolism in the skin, highlighting enzyme localization and potential implications for treating androgen-dependent skin conditions, but it reports no new clinical results.
284 citations
,
May 2002 in “Proceedings of the National Academy of Sciences” In vitro, this study suggests that CRH may act as an autocrine hormone in human sebocytes, influencing lipid synthesis and potentially impacting skin disorders related to alterations in sebaceous lipid formation.
37 citations
,
December 2001 in “Journal of Investigative Dermatology” This study found that human follicular papilla cells in the scalp produce leptin and express functional leptin receptors, suggesting leptin's significant role in hair biology.
41 citations
,
July 2001 in “PubMed” This study reported that while finasteride and progesterone significantly inhibited dihydrotestosterone synthesis in dermal papillae, estrogens were less effective.
47 citations
,
April 2001 in “Journal of Dermatological Science” This study found that insulin-like growth factor-I and hepatocyte growth factor increased the chemotactic migration of human hair outer root sheath cells, suggesting these factors have both growth stimulatory and chemotactic effects.
77 citations
,
February 2001 in “Journal of Dermatological Science” HGF activator helps convert HGF to its active form, promoting hair growth.
51 citations
,
September 2000 in “Acta dermato-venereologica” This study found that PPAR alpha, -delta, and -gamma are expressed in human hair follicle cells, and clofibrate exhibited a beneficial effect on hair follicle survival in culture within a specific concentration range.
50 citations
,
July 2000 in “Dermatologic Surgery” Female and male AGA are different diseases.
111 citations
,
April 2000 in “British journal of dermatology/British journal of dermatology, Supplement” In this study, physiological levels of free T3 significantly enhanced the survival of human hair follicles in vitro.
63 citations
,
November 1999 in “British journal of dermatology/British journal of dermatology, Supplement” This study observes the expression of mRNA for androgen receptor, 5α‐reductase, and 17β‐hydroxysteroid dehydrogenase in human dermal papilla cells.
110 citations
,
September 1999 in “British Journal of Dermatology” This case report describes a young woman with hypopituitarism who experienced hair loss typical of female androgenetic alopecia without detectable androgens, suggesting this hair loss pattern may not always be androgen dependent.
105 citations
,
December 1998 in “Archives of Dermatological Research” This study found that dermal papilla cells in human hair follicles exhibit stronger expression of VEGF mRNA and protein compared to other follicular cells, suggesting their key role in angiogenic processes related to hair growth.
83 citations
,
January 1998 in “Journal of Investigative Dermatology” In this study using human cell cultures, type 1 5α-reductase was found to vary in both protein heterogeneity and expression levels across different types of skin cells.
227 citations
,
January 1998 in “Journal of Endocrinology” This study found that dermal papilla cells from balding scalp hair follicles have significantly higher levels of androgen receptors than those from non-balding follicles, supporting their in vivo androgen response.
416 citations
,
September 1997 in “Journal of Investigative Dermatology” People with hair loss have more androgen receptors and enzymes in certain follicles, with men and women showing different patterns.
128 citations
,
March 1996 in “Journal of Investigative Dermatology” Increased IGF-1R expression is linked to thicker skin growth.
42 citations
,
August 1995 in “British journal of dermatology/British journal of dermatology, Supplement” This study found that RXR-alpha is strongly expressed in both normal and psoriatic human skin, suggesting it may play a role in the transition from proliferation to differentiation in epidermal keratinocytes.
25 citations
,
July 1994 in “Journal of dermatological science” This study observed that testosterone metabolism and androgen receptor localization differ significantly across body sites, with beard hair follicles showing distinct characteristics compared to occipital scalp hair follicles.
24 citations
,
December 1988 in “British Journal of Dermatology” This study found no correlation between acne severity and clinical signs of androgenicity in women, suggesting factors other than hyperandrogenaemia may contribute to acne development.