March 2022 in “Molecules” This study found that adenosine promotes hair growth by stimulating the Wnt/β-catenin pathway in cultured human dermal papilla cells through activation of the adenosine receptor.
148 citations
,
March 2022 in “The New England Journal of Medicine” In two phase 3 trials, this study found that oral baricitinib significantly improved hair regrowth compared to placebo in adults with severe alopecia areata after 36 weeks, though longer trials are needed to ascertain its long-term efficacy and safety.
1 citations
,
January 2022 in “European Journal of Pharmacology” In this study, FMN was found to inhibit androgen receptor function and androgen-regulated gene expression in prostate cancer cells, suggesting potential as an antiandrogen therapy.
1 citations
,
October 2021 in “Clinical, Cosmetic and Investigational Dermatology” In this study on cultured human dermal papilla cells, researchers found that niacinamide may enhance hair growth by reducing oxidative stress-induced cell senescence and delaying catagen entry, suggesting potential applications against hair loss.
13 citations
,
September 2021 in “Current Issues in Molecular Biology” This study suggests that D-panthenol may promote hair growth by enhancing cell viability, suppressing apoptosis markers, and elongating the anagen phase in human hair follicle cells.
25 citations
,
September 2020 in “Molecules” In this study, quercitrin was reported to promote hair growth and cell viability in cultured human dermal papilla cells by enhancing cellular energy metabolism and growth factor production via MAPK/CREB signaling.
59 citations
,
July 2020 in “Journal of The American Academy of Dermatology” This study concluded that oral minoxidil is an effective and well-tolerated alternative to topical minoxidil for healthy patients struggling with application-related compliance issues.
15 citations
,
May 2020 in “BMC complementary medicine and therapies” This study found that Polygonum multiflorum extract may promote hair growth by increasing anagen duration and activating dermal papilla cells in human hair follicles, as observed in cultured cell models.
20 citations
,
May 2020 in “Experimental Dermatology” This review discusses age-related changes in scalp skin and their potential effects on hair follicle aging, but reports no new clinical results, calling for further investigation.
16 citations
,
October 2019 in “Biological & Pharmaceutical Bulletin” This study suggests that Houttuynia cordata extract may promote hair growth by stimulating dermal papilla cell proliferation and extending the anagen phase through enhanced energy metabolism and gene expression changes.
53 citations
,
August 2019 in “Journal of The American Academy of Dermatology” This study observed that low-dose oral minoxidil and topical minoxidil 5% solution both improved hair density in women with female-pattern hair loss, but oral minoxidil may offer advantages in reducing hair shedding.
49 citations
,
July 2019 in “British Journal of Dermatology” This study found that Wnt signalling agonists increase and antagonists decrease in human scalp follicles from telogen to early-anagen, with differences from the mouse model suggesting targeted interventions for hair growth disorders.
142 citations
,
March 2019 in “Frontiers in Cellular Neuroscience” This review discusses the development and potential therapeutic applications of adenosine receptor agonists and positive allosteric modulators, noting that while many clinical trials have been unsuccessful, initial results for new compounds are promising.
4 citations
,
August 2018 in “Journal of The American Academy of Dermatology” This response article concurs with Dr. Lipner's critique that biotin supplementation is largely unsupported for routine use in dermatological conditions, with evidence mostly limited to case reports.
153 citations
,
March 2017 in “Endocrine” This review examines recent advances in understanding the pathophysiology and molecular mechanisms of androgenetic alopecia, highlighting two major genetic risk loci, but does not report new clinical findings.
40 citations
,
March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” This study visualized mitochondrial metabolism in cultured bovine hair follicles and plucked human hairs, finding that ROS and mitochondrial polarization correlate in specific hair follicle regions, particularly near keratin deposition sites.
10 citations
,
October 2015 in “Journal of Dermatology” This study found that adenosine significantly increased the proportion of thick hair in Caucasian men with androgenetic alopecia, with no reported adverse effects.
212 citations
,
September 2015 in “Journal of Investigative Dermatology” This article presents a comprehensive guide for classifying human hair follicle cycle stages in vivo using scalp xenografts on immunocompromised mice, offering valuable resources for researchers in the field.
11 citations
,
April 2015 in “International Journal of Cosmetic Science” This study found that topical adenosine significantly increased the ratio of thick hairs and contributed to global improvement in Japanese men with androgenetic alopecia compared to niacinamide, with no observed adverse events.
105 citations
,
March 2014 in “British journal of dermatology/British journal of dermatology, Supplement” In this study, patients with alopecia areata were found to have significantly lower serum vitamin D levels compared to those with vitiligo and healthy individuals, with lower levels correlating with increased disease severity.
223 citations
,
January 2014 in “International Journal of Molecular Sciences” This article reviews the complex signaling pathways between epithelial and mesenchymal cells crucial for hair follicle morphogenesis, highlighting the Wnt pathway's role as a master regulator without reporting new experimental findings.
28 citations
,
October 2011 in “International Journal of Molecular Medicine” In this study, adenosine was found to stimulate hair follicle growth in vitro by promoting growth factor expression, β-catenin activation, and downstream signaling pathways.
89 citations
,
September 2010 in “Annual Review of Genomics and Human Genetics” This review discusses the genetic factors involved in hair follicle morphogenesis and cycling and reports no new clinical results; it emphasizes the role of genes in hereditary hair diseases.
21 citations
,
July 2010 in “International Journal of Cosmetic Science” This study found that hair luster decreases with age in Japanese females, primarily due to an irregular increase in fiber curvature which affects hair alignment.
40 citations
,
June 2009 in “Journal of Cutaneous Pathology” This study found that Iranian patients with androgenetic alopecia had a higher terminal to vellus hair ratio compared to previous studies in Whites, suggesting potential onset of miniaturization.
33 citations
,
December 2008 in “Journal of Dermatology” This study found that 0.75% adenosine lotion significantly improved hair growth and thickness in Japanese women with female pattern hair loss compared to a placebo.
47 citations
,
September 2008 in “British Journal of Dermatology” This study found that women with androgenetic alopecia experience diffuse hair loss due to a decrease in terminal hairs and an increase in vellus hairs per follicular unit.
26 citations
,
October 2007 in “Experimental Dermatology” This study found that l-carnitine stimulated hair growth in vitro by promoting proliferation and reducing apoptosis in human scalp hair follicles, suggesting potential as a treatment for hair loss.
13 citations
,
September 2007 in “Journal of dermatological science”
171 citations
,
July 2007 in “Journal of Investigative Dermatology” The researchers reported that DHT-inducible DKK-1 may play a significant role in DHT-driven balding by inhibiting hair follicle cell growth and promoting apoptosis in androgenetic alopecia.
125 citations
,
May 2007 in “Journal of The American Academy of Dermatology” This study describes the development of the BASP classification system, providing a universal and systematic approach for classifying pattern hair loss in both men and women.
66 citations
,
February 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” The researchers reported that adenosine increases FGF-7 expression in dermal papilla cells, which may stimulate hair growth via the A2b adenosine receptor and cAMP pathway.
64 citations
,
March 2005 in “Journal of Investigative Dermatology” This study found that brain-derived neurotrophic factor (BDNF) inhibited hair shaft elongation and induced premature catagen development in cultured human hair follicles, partially through transforming growth factor β2.
269 citations
,
August 2002 in “Journal of The American Academy of Dermatology” This study found that 5% topical minoxidil significantly increased hair regrowth and improved psychosocial perceptions of hair loss in men with androgenetic alopecia compared to 2% topical minoxidil and placebo over 48 weeks.
83 citations
,
December 2001 in “Journal of Investigative Dermatology” Minoxidil boosts hair growth by targeting adenosine and possibly sulfonylurea receptor 2B.
31 citations
,
August 2001 in “PubMed” This study found that the TrichoScan method detected significant increases in hair counts and cumulative hair thickness in men after finasteride treatment, suggesting its potential for monitoring hair treatment responses.
129 citations
,
October 2000 in “British Journal of Dermatology” This study found that finasteride increases anagen hair growth in men with androgenetic alopecia.
370 citations
,
September 1999 in “The New England Journal of Medicine” This article discusses the treatment of androgenetic alopecia and alopecia areata with finasteride and minoxidil but reports no new clinical results.
581 citations
,
October 1998 in “Journal of The American Academy of Dermatology” In male pattern hair loss, this study found that finasteride 1 mg daily significantly slowed hair loss and increased hair growth over two years compared to placebo.
40 citations
,
February 1992 in “The Journal of Clinical Endocrinology and Metabolism” Taking finasteride pills and using minoxidil lotion together can help grow hair.