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.
151 citations
,
February 2007 in “International Journal of Dermatology” This review explores the causes and mechanisms of alopecia areata and discusses current treatments, reporting no new clinical findings.
93 citations
,
January 2007 in “Skin Pharmacology and Physiology” In this study, caffeine applied in a shampoo penetrated hair follicles faster and more effectively than through the skin surface within the first 20 minutes.
85 citations
,
January 2007 in “Journal of Drug Targeting” This study found that liposomal formulations improved minoxidil delivery to skin layers compared to niosomes and a control solution, suggesting enhanced potential for topical hair loss treatment.
77 citations
,
June 2006 in “Best Practice & Research Clinical Endocrinology & Metabolism” This review discusses the importance of androgen production and metabolism in hyperandrogenism, the use of specific serum markers for diagnosis, and the need for improved assays for clinical testing, but reports no new results.
46 citations
,
May 2006 in “Laser Physics” In this study, particles similar in size to keratin cells were surprisingly found to penetrate more efficiently into hair follicles due to a possible pumping effect from moving hairs.
161 citations
,
April 2006 in “Journal of Investigative Dermatology” Liposomes with certain properties can effectively deliver drugs deep into hair follicles.
323 citations
,
April 2006 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that 40 nm nanoparticles can effectively penetrate into hair follicles and epidermal Langerhans cells in human skin samples, potentially enabling efficient transcutaneous vaccine delivery.
109 citations
,
November 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” This article discusses the role of hair follicles in enhancing topical drug delivery and explores strategies for targeting these areas to improve treatment outcomes for skin diseases, but reports no new research results.
1279 citations
,
November 2005 in “Nature Medicine”
141 citations
,
November 2005 in “International journal of pharmaceutics” This review examines the role of hair follicles and sebaceous glands in percutaneous drug delivery but does not report new clinical results; it calls for further exploration of follicle-targeting therapies.
162 citations
,
August 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” This study introduces a novel non-invasive method called "differential stripping" to quantify the penetration of topically applied substances into hair follicles.
195 citations
,
June 2005 in “American Journal of Human Genetics” Genetic variation in the androgen receptor gene mainly causes early-onset hair loss, with maternal inheritance playing a key role.
419 citations
,
March 2005 in “Proceedings of the National Academy of Sciences” This study demonstrated that ND-GFP stem cells from the hair-follicle bulge area can differentiate into various cell types, including neurons, suggesting their potential as a source for therapeutic applications.
29 citations
,
January 2005 in “Journal of Long-Term Effects of Medical Implants” This article reviews the clinical characteristics and treatment options for various common bacterial skin infections but presents no new clinical results.
36 citations
,
July 2004 in “Journal of Controlled Release” This study demonstrates that confocal laser scanning microscopy can effectively visualize the rapid diffusion and penetration pathway of a dye into the hair follicle in fresh human scalp skin.
316 citations
,
June 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that using a standardized protocol with microspheres of approximately 1.5 micrometers enhances penetration into hair follicles, particularly when skin is treated with cyanoacrylate skin surface stripping.
199 citations
,
January 2004 in “The International Journal of Developmental Biology” This review discusses advances in understanding hair and hair follicle structure, gene expression, and molecular signals in hair formation, without reporting new clinical findings.
405 citations
,
January 2004 in “Journal of Investigative Dermatology” This study found that hair follicle characteristics vary significantly across different body sites, with the forehead and calf showing the highest potential follicular reservoirs, challenging previous assumptions about skin appendage distribution.
34 citations
,
September 2003 in “Journal of Investigative Dermatology Symposium Proceedings” This review discusses advancements in gene delivery to hair follicles and suggests potential gene therapy applications for treating hair loss, but it reports no new experimental results.
55 citations
,
January 2002 in “Journal of liposome research” This research explores developing liposomal formulations to enhance the delivery of difficult-to-absorb agents directly to hair follicles and sebaceous glands, with minoxidil and plasmid DNA as study molecules.
82 citations
,
January 2002 in “Journal of drug targeting” This study found that drug delivery through human scalp skin may be more effective for lipophilic and hydrophilic drugs compared to abdominal skin, highlighting the potential of intrafollicular delivery methods.
58 citations
,
October 2001 in “Dermatologic Clinics” This review discusses the categorization of hair loss and increased hair density disorders related to systemic diseases and reports no clinical results, emphasizing the potential diagnostic value of history, physical examination, and histopathologic data.
949 citations
,
January 2001 in “Cell” This study demonstrated that multipotent stem cells in adult mice whisker follicles migrate to produce whisker growth, and that this process requires precise control of stem cell trafficking.
72 citations
,
January 2001 in “Drugs” This review discusses current and emerging drug therapies for treating androgenetic alopecia and alopecia areata, and reports no clinical results; it highlights a need for improved and novel treatments.
1010 citations
,
August 2000 in “Cell” In this study, researchers found that hair follicle stem cells in mice can generate both hair follicle and epidermis cells, highlighting their potential bipotency.
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.
15 citations
,
July 1999 in “Dermatologic Clinics” This article discusses the potential for targeted therapies in hair loss by exploring inflammatory and cytokine-mediated processes, but it presents no new clinical results.
186 citations
,
July 1998 in “Journal of Cutaneous Medicine and Surgery” This study found that shorter CAG-repeat lengths in the androgen receptor may be associated with the development of androgen-mediated skin disorders like androgenetic alopecia, acne, and hirsutism in both men and women.
99 citations
,
April 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that human hair follicles serve as a crucial reservoir for Langerhans cells, which repopulate the epidermis depleted by ultraviolet B exposure.
62 citations
,
May 1997 in “Journal of Pharmaceutical Sciences” This study concluded that sebaceous glands are the main pathway for the antiandrogen RU 58841 to permeate the skin, with liposomes enhancing localization in these glands.
48 citations
,
March 1997 in “Seminars in Cutaneous Medicine and Surgery” This review discusses the clinical characteristics, causative factors, and treatment options for vitiligo and reports no new research findings.
34 citations
,
June 1990 in “British Journal of Dermatology” This study found that etretinate treatment led to an increase in plucked telogen hair counts, suggesting a reduction in the duration of anagen as the primary cause.