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This study identified a distinct "exogen" phase in the hair cycle during which hair shedding occurs, primarily coupled with the anagen phase, rather than as part of the telogen phase.

FGF18 controls hair growth rest phase.

The study demonstrated that both DKK2 and SOSTDC1 are necessary for normal timing of the first catagen phase in mice hair growth cycles.

This study found that leptin from dermal white adipose tissue may regulate hair growth and cycle progression through its receptor on hair follicle epithelium in mice and humans.

This study found that a high dose of epidermal growth factor induced hair loss in sheep by causing apoptosis in anagen hair and transitioning the hair cycle to catagen.

FGF18 helps keep hair in its resting phase, affecting hair growth cycles.

This study found that Rab27a and Rab27b play opposite roles in hair growth, with Rab27a knockdown suppressing and Rab27b knockdown promoting hair growth in models.

This study found that morroniside enhanced hair follicle growth and transition through the Wnt/β-catenin signaling pathway in a mouse model, suggesting its potential as a treatment for hair loss.

In this study, a serum containing Silybum marianum extract, Manganese PCA, and Lespedeza capitata extract improved hair growth and prolonged the anagen phase in a human scalp skin model.

This study suggests that estrogen synthesis from estrone sulfate significantly influences hair growth regulation, with variations based on the hair growth phase, gender, and age.

In this study, γ-ray exposure in mice decreased hair follicle density and pigmentation, suggesting damage to stem cells affecting hair follicle regeneration.

This study found that microRNAs play key roles in regulating gene expression during the hair cycle in mice, impacting follicle growth and skin homeostasis through mechanisms involving major signalling pathways.

This study observed that eliminating positional error in hair segment analysis can improve understanding of changes in isotopic composition, aiding the identification of pathological conditions and dietary patterns.

This study observed that primary hair follicles in Liaoning Cashmere goats had broader hair bulb widths compared to secondary follicles, with the difference diminishing during the anagen phase of hair follicle development.

This study found that genes such as FGF5, FGFR1, and RRAS may impact the growth cycle of secondary hair follicles in Inner Mongolian Cashmere goats.

This study suggests that new cells are incorporated into the dermal papilla during the early anagen phase of the hair cycle, which may influence hair growth consistency and follicle size changes.

The researchers reported that exposure to long days after short-day treatment induced a synchronized, out-of-season wool growth cycle in New Zealand Wiltshire sheep, similar to cycles induced in other species.

In this study, researchers used mRNA sequencing to identify and categorize over 49,000 contigs in goat skin, revealing significant gene activity related to metabolism, cell cycle, and cell division during hair growth.

This study examined gene expression in cashmere goats and identified key pathways and molecular regulators that influence hair follicle growth stages and melatonin's role in promoting cashmere growth.

This study suggests that TGF-alpha may function in an autocrine or juxtacrine manner rather than promoting cell proliferation during hair growth cycles in ferrets and sheep.

This review discusses recent advances in hair follicle research, highlighting therapeutic and cosmetic applications, but reports no new study results.

This study found that the herbal extract HX109 promoted hair growth in mice by increasing cell viability and enhancing hair regrowth, with the effects increasing as doses rose.

This study investigated the effects of cedrol on colorectal cancer and found that it inhibited cell proliferation and induced cell cycle arrest and apoptosis in cell models, while in vivo, it suppressed cancer progression and improved survival at a well-tolerated dose.

In this study, using Trichosol™ with Minoxidil (3%) increased the percentage of hair in the anagen growth phase by about 20% over 90 days compared to using Minoxidil alone.

Finasteride increases hair growth, prolongs hair cycle, and lowers dihydrotestosterone levels.

This study found that FGF18 is crucial for regulating hair follicle rest and growth phases, as its absence in mice leads to a shorter resting phase and rapid hair cycling.

In this study, researchers found that Derinat treatment in mice maintained the hair cycle in the anagen phase and reduced TRPCs-mediated intracellular ROS accumulation, potentially improving hair growth by altering the skin microenvironment.

This study found that PGA-4HGF nanoparticles enhanced hair growth in mice more effectively than 4HGF alone by increasing anagen phase duration and dermal papilla cell proliferation.

This study used infrared spectral imaging to show for the first time the distribution of glypican-4 and glypican-6 in hair follicles across different growth phases, highlighting the potential of this technique for studying alopecia.

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.