19 citations
,
November 2012 in “British Journal of Dermatology” This study found that dopamine directly induces the catagen phase in human scalp hair follicles in vitro.
14 citations
,
March 2015 in “Clinical and Experimental Dermatology” In this study, human placenta extract was observed to enhance the hair-growth-promoting effects of minoxidil and stimulate earlier and prolonged anagen phases in a mouse model.
7 citations
,
April 1995 in “Endocrinology” This study concluded that finasteride treatment did not adversely affect bone development or density in male rats, suggesting selective DHT deficiency is not harmful to the skeleton.
April 2018 in “Journal of Investigative Dermatology” This study suggests that with aging, mouse corneal renewal increasingly relies on Lrig1+ stem cells as CD44 expression and Wnt activity decline.
April 2018 in “Journal of Investigative Dermatology” This study found that the PPAR-γ modulator AGED can reverse epithelial-mesenchymal transition in hair follicles affected by lichen planopilaris ex vivo, suggesting potential for treating scarring alopecias.
April 2018 in “Journal of Investigative Dermatology” This study suggests that macrophages play a more substantial role in the pathogenesis of Lichen planopilaris compared to Frontal fibrosing alopecia, as indicated by increased CD68+ cells in Lichen planopilaris.
April 2018 in “Journal of Investigative Dermatology” This study found that dermal white adipose tissue surrounding human hair follicles enhances proliferation, pigmentation, and hair shaft elongation in an ex vivo setting.
April 2018 in “Journal of Investigative Dermatology” This study found that the cell of origin in mouse skin affects melanoma phenotype and response to therapies, despite the presence of the same genetic mutations.
March 2021 in “British Journal of Dermatology” This study using a humanized mouse model of androgenetic alopecia suggests that platelet-rich plasma may promote hair regrowth and improve hair characteristics in vivo.
April 2018 in “Journal of Investigative Dermatology” This study found distinct gene expression profiles in the parietal and occipital scalp of individuals with androgenetic alopecia, linked to developmental origins and susceptibility to hair loss, offering insights into genetic and epigenetic factors involved in AGA.
12 citations
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October 2017 in “Journal of Cosmetic Dermatology” This study found that plasma rich in growth factors (PRGF) as an adjuvant to follicular unit extraction (FUE) surgery may enhance hair graft performance and reduce post-surgical inflammation and pain in hair loss patients.
7 citations
,
April 2014 in “Cell biology international” This study found that melatonin treatment increased epidermal thickness, subcutaneous fat, and dermal-related factors in postmenopausal rats, suggesting benefits for skin structure after menopause.
3 citations
,
June 2017 in “Journal of Biomaterials Applications” This study demonstrated that keratin extract can stimulate hair growth by inducing the anagen phase in telogenic mice.
2 citations
,
December 2014 in “Research & Reviews: Journal of Pharmacy and Pharmaceutical Sciences” This study found that a pet ether extract of Daucus carota promoted hair growth by inducing and prolonging the anagen phase in albino rats, surpassing the effects of 1% minoxidil.
December 2025 in “Bioscientist Jurnal Ilmiah Biologi” In this study, researchers developed an optimized formulation of a traditional ethnomedicinal recipe from East Nusa Tenggara, which demonstrated strong antioxidant activity and significantly enhanced hair growth in a mouse alopecia model, compared to control groups.
June 2017 in “Experimental and Therapeutic Medicine” In a depilated mouse model, this study found that blocking CXCL4 activity with an anti-CXCL4 monoclonal antibody promoted hair growth by inducing an earlier anagen phase, delaying hair follicle regression, and altering expression of genes and proteins related to hair growth and cell proliferation.
December 2014 in “Research and Reviews: Journal of Pharmacology and Toxicological Studies” This study found that applying pet ether extract of Brassica oleracea to rats' skin promoted earlier and longer anagen phases in hair growth, outperforming 1% minoxidil.
1 citations
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November 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” This study introduced a new high-throughput method for analyzing scalp hair morphology and found that quantifying hair form provides more accurate information than traditional classification based on racial categories, challenging the belief that cross-sectional morphology predicts hair curvature.
17 citations
,
June 1990 in “PubMed” This study examined the morphological variations of terminal hair from different body regions of a Caucasian male, finding notable differences in diameter and features like "steak-boning" in specific hair types.
2 citations
,
April 2023 in “Archives of Aesthetic Plastic Surgery” This study found that measuring hair thickness with a phototrichogram provided significantly thicker readings than using a micrometer caliper, suggesting that the phototrichogram may be more clinically useful for evaluating hair in patients undergoing hair transplantation.
688 citations
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June 2007 in “Cell Stem Cell” This study found that deleting the ATR gene in adult mice led to rapid onset of age-related traits such as hair graying and osteoporosis through reduced regenerative capacity.
277 citations
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July 2002 in “Molecular Endocrinology” In this study, homozygous VDR null mutant mice exhibited nonfunctional vitamin D receptors, leading to growth abnormalities and revealing the limited physiological importance of vitamin D pathways outside the classical receptor.
211 citations
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October 2001 in “The FASEB Journal” This study found that the BMP antagonist noggin induces hair growth in postnatal skin by neutralizing BMP4's inhibitory activity, potentially mediated by changes in Shh expression.
194 citations
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March 2003 in “American Journal of Pathology” This study found that psychoemotional stress disrupts hair growth in mice by terminating anagen and suggests a potential pathway for pharmacological management of stress-related hair loss in humans.
175 citations
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December 2014 in “PLoS Biology” This study found that macrophages near hair follicles contribute to the activation of skin epithelial stem cells in mice, suggesting a novel role for macrophages in regulating hair growth.
174 citations
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April 2005 in “The American journal of pathology (Print)” This study found that TRPV1 activation in human scalp hair follicles inhibited hair shaft elongation, suppressed proliferation, and induced apoptosis, suggesting TRPV1 as a potential target for managing hair growth and epithelial disorders.
159 citations
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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.
138 citations
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June 2012 in “Genes & Development” This study found that dermal Shh signaling regulates specific dermal papilla signatures essential for maintaining hair follicle development, suggesting that the Shh-Noggin signaling loop is crucial for hair morphogenesis.
128 citations
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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.
127 citations
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January 2013 in “PLOS ONE” This study found that feeding aged mice a probiotic yogurt induced changes leading to thicker, healthier fur, suggesting a bacteria-triggered interleukin-10-dependent mechanism that mimics signs of youth and reproductive fitness.