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Glossary Plucked Hair

hair manually removed from the root by pulling

Plucked hair refers to hair that has been manually removed from the scalp or body by pulling it out from the root. This process, also known as extracted hair, is often used in hair transplantation procedures and for diagnostic purposes in dermatology to examine the hair's growth cycle and health.

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research Human follicular stem cells: their presence in plucked hair and follicular cell culture

82 citations , May 2004 in “British Journal of Dermatology”

This study found CK19/Bcl-2-positive and Bax-negative cells in hair follicle cultures from plucked hairs, supporting their potential identification as follicular stem cells located in the bulge area.

Plucked Human Hair as a Tissue to Assess Pharmacodynamic Endpoints During Drug Development Studies

research Plucked human hair as a tissue in which to assess pharmacodynamic end points during drug development studies

23 citations , May 2005 in “British Journal of Cancer”

This study reported the feasibility of detecting six cell-cycle-related nuclear markers in plucked human scalp and eyebrow hair, providing valuable insights for future intervention studies.

research Plucked Human Hair Shafts and Biomolecular Medical Research

8 citations , January 2013 in “The scientific world journal/TheScientificWorldjournal”

This review explores the potential use of plucked hair follicles in regenerative medicine and diagnostics but presents no new research findings.

research Experimental Evidence in Hair Restoration Procedures: Plucked Hair Survival and Growth Rate.

March 2016 in “PubMed”

This study found that plucked hair follicles exhibited a higher growth rate than conventional one-hair micrografts in vitro, suggesting they may be a less invasive alternative for hair transplantation.

Sulfotransferase Activity in Plucked Hair Follicles Predicts Response to Topical Minoxidil in the Treatment of Female Androgenetic Alopecia

research Sulfotransferase activity in plucked hair follicles predicts response to topical minoxidil in the treatment of female androgenetic alopecia

20 citations , April 2014 in “Dermatologic Therapy”

This study reported that sulfotransferase activity in plucked hair follicles can predict treatment response to 5% topical minoxidil in women with androgenetic alopecia with high sensitivity and specificity.

research In Vitro Culturing and Harvesting of Human Plucked Hair Follicles

October 2015 in “Journal of Bioresource Management”

This study suggests that plucked human hairs can be used to culture hair follicle cells in vitro, offering a potential, cost-effective alternative to traditional hair transplantation for treating male baldness.

Sulfotransferase Activity in Plucked Hair Follicles Predicts Response to Topical Minoxidil Treatment in Brazilian Female Pattern Hair Loss Patients

research Sulfotransferase activity in plucked hair follicles predicts response to topical minoxidil treatment in Brazilian female pattern hair loss patients

4 citations , December 2019 in “Dermatologic Therapy”

Hair enzyme activity predicts minoxidil success in Brazilian women with hair loss.

research To compare the sensitivity pattern of direct immunofluorescence of perilesional skin and plucked hair in pemphigus vulgaris

June 2017 in “Journal of the American Academy of Dermatology”

Plucked hair can help diagnose pemphigus vulgaris early.

research Plucked hair follicles from patients with chronic discoid lupus erythematosus show a disease-specific molecular signature

17 citations , July 2019 in “Lupus Science & Medicine”

In this study, gene expression analysis of plucked hair follicles from scalp lesions was sufficient to differentiate chronic discoid lupus erythematosus from psoriasis and healthy controls, suggesting a non-invasive diagnostic potential.

research Novel Application of Layered Expression Scanning for Proteomic Profiling of Plucked Hair Follicles

7 citations , January 2005 in “Dermatology”

This study demonstrates that LES-hair can detect differential protein expression in specific regions of plucked hair follicles, suggesting its potential for research and clinical applications like monitoring treatment effects in alopecia and cancer therapies.

research Generating iPSCs with a High-Efficient, Non-Invasive Method—An Improved Way to Cultivate Keratinocytes from Plucked Hair for Reprogramming

3 citations , June 2022 in “Cells”

This study reports improved methods for harvesting and processing keratinocytes from plucked human hair, enhancing their utility in generating donor-specific induced pluripotent stem cells more efficiently and reliably.

research LB788 Development of a novel three-dimensional human epidermal model from plucked hair follicle-derived keratinocytes

July 2016 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study concluded that a new model of reconstructed human epidermis using keratinocytes from plucked hair follicles offers a less-invasive alternative to conventional skin-derived models for skin research.

research Comparison of growth status of epithelial stem cells derived from plucked hair follicle between different culture conditions

January 2009 in “Journal of Jilin University”

This study found that epithelial stem cells from plucked hair follicles grow optimally when cultured on 3T3 fibroblasts feeders.

research A stain for plucked anagen hairs

17 citations , August 1979 in “Journal of The American Academy of Dermatology”

This study found that a histochemical stain using 4-dimethyl-aminocinnamaldehyde effectively distinguishes between plucked anagen and telogen hairs by causing the root ends of anagen hairs to develop a red color.

research [Three-dimensional culture of plucked human hair follicles inside the collagen gel matrix].

3 citations , July 1990 in “PubMed”

This study demonstrated that plucked human hair follicles cultured in a collagen gel matrix developed spike-like structures, suggesting a useful method to study outer root sheath cell growth and differentiation in vitro.

research The Enrichment of Specific Hair Follicle-Associated Cell Populations in Plucked Hairs Offers an Opportunity to Study Gene Expression Underlying Hair Traits

2 citations , December 2022 in “International journal of molecular sciences”

This study compared RNA-seq results from horse plucked-hair and skin-biopsy samples, finding that plucked hairs were enriched with hair-follicle keratinocytes, while biopsies showed enrichment for other cell types.

research Abstract 4350: Pharmacodynamic biomarkers: Evaluation of oncology drug target engagement in human plucked scalp and beard hair

April 2023 in “Cancer Research”

This study demonstrated that human plucked hairs can be used as a valuable biomarker to evaluate the pharmacodynamic responses of various chemotherapy agents ex vivo, supporting their potential use for assessing oncology drug target engagement prior to clinical studies.

research FC053 Pro-inflammatory cytokine cascade in human plucked hair

September 1997 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology”

Anti-IL-1 treatments might help with certain types of hair loss in people with high inflammation.

research Analysis of Cytokines and ATP in Plucked Hair Follicles

8 citations , January 2021 in “Bulletin of Experimental Biology and Medicine”

ATP and IL-10 levels in hair follicles relate to follicle length and hair growth, with differences in alopecia patients.

research Use of primary keratinocyte cultures from plucked human hairs for analysis of gap junctional intercellular communication

3 citations , January 1991 in “Toxicology in Vitro”

This study reports that hair follicle cultures are effective for gap junctional intercellular communication studies and can be used to assess the tumor-promoting activity of certain environmental chemicals.

research Culture of dispersed hair follicle cells from plucked out hairs without a feeder layer.

1 citations , December 1989 in “PubMed”

This study found that dispersed hair follicle cells can be cultured successfully on collagen type IV, potentially offering an alternative to cultured epidermal keratinocytes for skin treatment.

research 5α-Reductase isozymes and aromatase mRNA levels in plucked hair from young women with female pattern hair loss

21 citations , November 2017 in “Archives of Dermatological Research”

This study found that women with female pattern hair loss had increased 5α-reductase isozymes and decreased aromatase mRNA levels, potentially affecting their response to treatment.

research Establishment of a new three‐dimensional human epidermal model reconstructed from plucked hair follicle‐derived keratinocytes

12 citations , May 2016 in “Experimental Dermatology”

The researchers concluded that their new reconstructed human epidermis model from plucked hair follicle-derived keratinocytes offers a safer and simpler alternative to traditional skin-derived models for studying epidermal function.

research Differential epithelial outgrowth of plucked and microdissected human hair follicles in explant culture

32 citations , September 1996 in “Archives of Dermatological Research”

research Differential epithelial outgrowth of plucked and microdissected human hair follicles in explant culture

6 citations , September 1996 in “Archives of Dermatological Research”

The 5alpha-Reductase Type 1, But Not Type 2, Gene Is Expressed in Anagen Hairs Plucked from the Vertex Area of the Scalp of Hirsute Women and Normal Individuals

research The 5alpha-reductase type 1, but not type 2, gene is expressed in anagen hairs plucked from the vertex area of the scalp of hirsute women and normal individuals

17 citations , October 2003 in “Brazilian Journal of Medical and Biological Research”

This study found that SDR5A1 gene expression was similar between hirsute women, normal women, and men, suggesting it may not explain differences in hair growth among these groups.

Insights into Male Androgenetic Alopecia: Differential Gene Expression Profiling of Plucked Hair Follicles and Integration with Genetic Data

research Insights into Male Androgenetic Alopecia: Differential Gene Expression Profiling of Plucked Hair Follicles and Integration with Genetic Data

7 citations , July 2018 in “Journal of Investigative Dermatology”

This article reviews the genetic research on male androgenetic alopecia, highlighting that over 300 associated risk variants have been identified, with unclear mechanisms of action.

research [Studies on enzyme activities in the hair root in male pattern baldness: glycolytic enzyme, acid hydrolase, transglutaminase and ornithine decarboxylase activities of plucked hair roots].

June 1985 in “PubMed”

MRNA Levels of Aromatase, 5α-Reductase Isozymes, and Prostate Cancer-Related Genes in Plucked Hair from Young Men with Androgenic Alopecia

research mRNA Levels of Aromatase, 5α-Reductase Isozymes, and Prostate Cancer-Related Genes in Plucked Hair from Young Men with Androgenic Alopecia

December 2023 in “International Journal of Molecular Sciences”

In this study, researchers found that young men with androgenic alopecia exhibited significantly higher mRNA levels of 5α-reductase isozymes and changes in prostate cancer-related genes, which could explain varying responses to treatment and guide future therapies.

research Qualitative investigation of fresh human scalp hair with full-field optical coherence tomography

10 citations , January 2012 in “Journal of biomedical optics”

This study used ultrahigh-resolution optical coherence tomography to observe hair shaft structures, finding melanin granules absent only in white hair, which may explain color differences between black and white hair.