March 2021 in “Research Square (Research Square)” This study found that overexpression of the SbbHLH85 gene in sweet sorghum increases root hair growth and Na+ absorption, but negatively affects salt tolerance.
July 2026 in “bioRxiv (Cold Spring Harbor Laboratory)” In this study, researchers found that the efflux of calcium in root hairs of Arabidopsis thaliana, particularly through the ER-localized ACA2 and ACA7, is crucial for modulating cytoplasmic calcium signals and enabling proper root hair growth, with disruptions leading to impaired elongation.
This review suggests that the inner root sheath of human hair follicles may have broader regulatory roles beyond structural support, potentially impacting processes like folliculogenesis, anagen phase regulation, and immunomodulation.
February 2024 in “Frontiers in plant science” This study found that Plant Elicitor Peptides enhance root hair growth through a mechanism independent of their known receptors, with PROPEP2 playing a key role in this process by influencing gene expression related to root hair formation.
October 2022 in “Research Square (Research Square)” This study found that volatile compounds from Bacillus subtilis strain WM13-24 improved root development in Arabidopsis by influencing auxin signaling.
January 2021 in “Revista Dermatológica Centro Uraga” This review emphasizes the importance of endocrinologic evaluation in acne patients due to its association with endocrine disorders like hyperandrogenism; it reports no new clinical results.
January 2018 in “bioRxiv (Cold Spring Harbor Laboratory)” This study explored how root hairs integrate opposing growth signals but did not report new conclusive findings on the activation of known molecular players in polar growth.
August 1994 in “Molecular Endocrinology” This study found that AtT-20 pituitary cells with higher cAMP-dependent kinase activity had larger calcium currents and significantly increased beta-endorphin release compared to cells with lower kinase activity.
12 citations
,
July 2016 in “Forensic science international” This study found that postmortem root banding in hair is likely due to the degradation of the intermacrofibrillar matrix in the cortex, with no damage to the cuticle observed.
169 citations
,
June 2010 in “Molecular & cellular proteomics” This study suggests that ethylene and lignoceric acid (C24:0) may promote cotton fiber and Arabidopsis root hair growth by activating the pectin biosynthesis network.
68 citations
,
March 1965 in “The BMJ” Hormones and genetics affect hair growth and patterns, with some changes reversible and others not.
66 citations
,
July 2007 in “Journal of Molecular Medicine” This study in mice demonstrated that stress or nerve growth factor injection increases sensory neuron activity related to skin innervation, suggesting a strong connection between stress perception and neurogenic skin inflammation.
51 citations
,
January 2003 in “Hormone Research in Paediatrics” This review discusses hormonal influences on hair growth and suggests that understanding hormone-gene interactions may improve treatment of hirsutism and alopecia, but reports no new clinical findings.
51 citations
,
July 2010 in “Trends in Endocrinology and Metabolism” This review discusses prolactin production and regulation in human skin and hair follicles, highlighting its potential broader implications but reports no new empirical results.
51 citations
,
February 2009 in “Journal of dermatological science” In this study, β-catenin overexpression in human hair outer root sheath cells increased the expression of Pitx2, which activated the follicular differentiation pathway, suggesting Pitx2's potential role as a modulator in hair growth control.
50 citations
,
September 2011 in “Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids” This review examines the role of retinoic acid synthesis in hair follicles and sebaceous glands, focusing on its localization and function during normal and disease states, but reports no new results.
46 citations
,
January 1991 in “Journal of Investigative Dermatology” Minoxidil works in liver and outer hair root sheath for hair growth.
38 citations
,
February 2005 in “The journal of sexual medicine” This study found that a testosterone patch and gel showed bioequivalent testosterone levels in hypogonadal men, but the patch mimicked a natural circadian profile, while the gel resulted in higher dihydrotestosterone levels.
37 citations
,
March 2012 in “International Journal of Radiation Biology” This study found that using a 900-MHz GSM mobile phone for 15 or 30 minutes significantly increased single-strand DNA breaks in human hair root cells near the phone.
36 citations
,
May 2016 in “Biomaterials” This study demonstrated that an engineered human skin equivalent can generate follicle-like structures resembling fetal skin, highlighting the role of the dermal compartment in directing epithelial cell fate in vitro.
32 citations
,
December 1969 in “The Lancet” This study found a significant shift to the telogen phase in the hair growth of children with classical marasmus compared to normal children, suggesting a connection to the chronicity of the condition.
26 citations
,
September 2018 in “Journal of Molecular Cell Biology” This study observed that Endoglin is crucial for maintaining correct hair follicle cycling and stimulating hair follicle stem cell niches through feedback interactions involving Wnt/β-catenin and Bmp/Smad signaling pathways in a mouse model.
24 citations
,
November 1978 in “Biochemistry” This paper reports on the structural characteristics of α-type filaments in the inner root sheath cells of guinea pig hair follicles without presenting new clinical findings.
21 citations
,
March 2017 in “Skin research and technology” In this study, extracting internal lipids from Caucasian hair fibers led to decreased water permeability, influenced by the fluidity of lipids.
18 citations
,
December 2020 in “Frontiers in cell and developmental biology” This study found that extracellular vesicles from low-passage dermal papilla cells may activate hair growth by delivering miR-140-5p, which downregulates BMP2 signaling, suggesting potential therapeutic targets for alopecia.
15 citations
,
July 2004 in “Journal of morphology” This study analyzes the fine structure and protein distribution in monotreme hairs, finding similarities with other mammals and detailing unique immunocytochemical features in their inner root sheaths.
14 citations
,
January 2017 in “Pharmacological Reports” TP0427736 may help treat hair loss by blocking a specific protein and promoting hair growth.
12 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that hair follicle cells' growth in vitro is influenced by the concentration of androgens and antiandrogens, with papilla cells and outer root sheath keratinocytes showing distinct sensitivity.
11 citations
,
August 2004 in “Facial Plastic Surgery” This review describes endoscopic techniques for rejuvenating the upper two-thirds of the face, highlighting their safety, reliability, and fewer complications compared to traditional open procedures, and reports no new clinical results.
10 citations
,
December 2015 in “Clinics in Dermatology” This review highlights the eye and skin manifestations of endocrine-related metabolic diseases but provides no new clinical results.