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The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.

In this study, increased corticosterone from chronic stress prolonged hair follicle stem cell quiescence in mice, inhibiting regeneration, but restoring Gas6 expression overcame this inhibition.

This study found that telogen, a resting phase of the hair follicle cycle, is characterized by dynamic gene expression, including enhanced cholesterol metabolism and immune signaling, suggesting it is an active regulatory phase despite its quiescent appearance.

This article explores the dynamic and energy-efficient nature of telogen hair follicles, challenging the notion of dormancy, and highlights their potential in advancing treatments for hair growth disorders.

This study found that fluconazole induced early hair follicle resting phase (telogen effluvium) in rats, without changing retinoic acid levels in rats or human patients, suggesting further investigation into fluconazole's hair loss mechanism is needed.

Telogen effluvium is a common hair loss condition where many hairs enter the resting phase, often not noticeable until significant loss occurs, and treatment focuses on the underlying cause.

Low-dose pulsed electric fields in a rat model shifted hair follicles from resting to active growth, with voltage as the most influential factor.

In this study, ceruloplasmin and keratin 4 were identified as markers that differentiate between growing and resting phases in cashmere goat hair follicles, with keratin 4 being a potential marker for the onset of a new hair cycle.

This study reviews the development of a mouse model using pyroxylin to induce localized hair growth and shorten the hair cycle's resting phase, suggesting it as a platform for evaluating hair growth treatments, though further research is needed for human application.

This study found that neither a single application nor prolonged exposure to selenium sulfide had a significant effect on hair growth or rest phase percentages.

This study found that topical estradiol inhibits hair growth in mice by preventing the hair follicle's transition from resting to growth phase, a process reversible with an estrogen receptor antagonist.

This study found that while hair follicles can be viably maintained in vitro for 7 days, their morphology suggests a shift to the resting phase, likely due to isolation.

This study found that epimorphin and a modified peptide, pep7, can stimulate hair follicles to shift from a resting phase to a growing phase in both an organ culture assay and in mice.

This study found that resveratrol and fisetin promoted hair growth in mice by inducing telomerase reverse transcriptase expression, which activates hair follicle stem cells and transitions follicles from a resting to a growth phase.

In this study, researchers using a multi-omics approach identified specific proteins involved in the hair follicle cycle of Inner Mongolia Cashmere Goats, finding that API5 affects apoptosis, while ribosomal proteins are highly expressed during the resting stage, providing insights into hair follicle growth and apoptosis.

This study observed that pilose antler extract promoted hair growth in mice with androgenetic alopecia by stimulating the hair follicle growth cycle via the SHH/GLI pathway activation and BMP/Smad pathway suppression.

This study observed that vellus hairs and empty spaces are present in prepubertal children's scalps, but they likely do not indicate androgenetic alopecia, suggesting a natural 'true resting' phase of scalp hair.

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.

This study observed that topical prostaglandin treatments may protect against hair follicle injury during chemotherapy, as indicated by preserved eyelashes in patients using these treatments.

This study found that estradiol affects hair growth in mice by regulating the transition of hair follicles from rest to growth phases via the estrogen receptor pathway in the dermal papilla.

In this study, researchers discovered that activating TERT in mouse skin epithelium triggers dormant hair follicle stem cells, leading to rapid hair growth, through a pathway independent of telomere extension.

This study found that vimentin expression in the hair follicles of Inner Mongolian Cashmere goats is highest during the growth stage and localized to the outer root sheath, suggesting a role in hair cycle regulation.

This report describes a case where severe hair loss occurred as an early manifestation of Hodgkin disease, with the literature suggesting it might result from follicle destruction or toxic effects.

This preliminary study found that Melandrium firmum extract may promote hair growth and inhibit 5α-reductase, suggesting potential as a candidate for treating androgenetic alopecia.

In this study, Panax ginseng extract and its ginsenosides were found to stimulate the proliferation of hair-related cells and promote the transition from the telogen to the anagen phase, enhancing hair-shaft growth by suppressing BMP4 expression in human dermal papilla cells.

This study found that 17-beta-estradiol inhibits hair growth in mice by blocking hair follicles in the telogen phase, whereas an estrogen receptor antagonist promotes hair growth by initiating anagen.

This study found that finasteride increases anagen hair growth in men with androgenetic alopecia.

This study found that a topical plant worm extract significantly accelerated hair regrowth in mice without apparent toxicity or side effects.

This study found that latanoprost induces significant growth and pigmentation of lashes and ancillary hairs, with effects mirroring both brief and chronic treatments observed in patients and animal models.

This article reviews the use of bimatoprost for eyelash hypotrichosis and reports its effectiveness in promoting eyelash growth but highlights uncertain efficacy in cases of eyelash alopecia areata.