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Iwabuchi T, Ogura K, Hagiwara K, Ueno S, Kitamura H, Yamanishi H, Tsunekawa Y, Kiso A. Ginsenosides in Panax ginseng Extract Promote Anagen Transition by Suppressing BMP4 Expression and Promote Human Hair Growth by Stimulating Follicle-Cell Proliferation. Biol Pharm Bull 2024; 47:240-244. [PMID: 38246611 DOI: 10.1248/bpb.b23-00276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Studies showing that Panax ginseng promotes hair growth have largely been conducted using mice; there are few reports on how P. ginseng affects human hair growth. In particular, little is known about its effect on the telogen to anagen transition. To determine the effect of P. ginseng on human hair growth and the transition from the telogen to the anagen phase. The effects of P. ginseng extract (PGE) and the three major ginsenoside components, Rb1, Rg1, and Re, on the proliferation of human dermal papilla cells (DPCs) and human outer root sheath cells (ORSCs) were investigated. The effects of these compounds on the cell expression of bone morphogenetic protein 4 (BMP4), fibroblast growth factor 18 (FGF18) and Noggin were assessed by real-time PCR. The effect of PGE on hair-shaft elongation was determined in a human hair follicle organ-culture system. PGE and the three ginsenosides stimulated the proliferation of DPCs and ORSCs and suppressed BMP4 expression in DPCs but did not affect FGF18 expression in ORSCs and Noggin expression in DPCs. PGE stimulated hair-shaft growth. PGE and the ginsenosides Rb1, Rg1, and Re stimulate the transition from the telogen phase to anagen phase of the hair cycle by suppressing BMP4 expression in DPCs. These compounds might be useful for promoting the growth of human hair.
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Affiliation(s)
- Tokuro Iwabuchi
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology
| | - Kazuki Ogura
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology
| | - Kenta Hagiwara
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology
| | - Shogo Ueno
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology
| | - Hiroaki Kitamura
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology
| | - Haruyo Yamanishi
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology
| | - Yuki Tsunekawa
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology
| | - Akinori Kiso
- Research Center, Maruzen Pharmaceuticals Co., Ltd
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Harada K, Ohyama M, Niiyama S, Irisawa R, Mae K, Mori M, Wakimoto H, Kinoshita-Ise M, Fukuyama M, Hayakawa R, Takagi M, Yamazaki M, Miyoshi M, Nishikawa S, Sato S, Nakazawa Y, Sugimoto T, Ogo M, Tsuboi R. Efficacy of autologous dermal sheath cup cell transplantation in male and female pattern hair loss: A Single-Arm, Multi-Center, phase III equivalent clinical study. J Dermatol 2023; 50:1539-1549. [PMID: 37752738 DOI: 10.1111/1346-8138.16957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/20/2023] [Accepted: 08/23/2023] [Indexed: 09/28/2023]
Abstract
A previous, proof-of-concept clinical study suggested that dermal sheath cup cell injections into the affected areas of male/female pattern hair loss (PHL) may have some amelioratory effects, the clinical efficacy of which needs further examination. A phase III equivalent clinical study was conducted to further probe the therapeutic potential of this novel approach and verify its safety and efficacy in improving the appearance of PHL. Thirty-six participants with PHL were injected with dermal sheath cup cell harvested from non-affected occipital hair follicles twice in quarterly intervals. Global photographic assessment and phototrichogram were performed in a blinded manner. Patient-reported outcomes were assessed for 12 months. On global photographic assessment, 30% of the participants showed improvement. The analysis of phototricogram data detected the increases in the cumulative hair diameter, hair cross-sectional area, and mean hair diameter of 107.6 ± 152.6 μm/cm2 , 13069.1 ± 10960.7 μm2 /cm2 , and 0.9 ± 0.9 μm (ratios vs. baseline: +1.4%, +3.4%, and +2.2%), respectively. The female and high terminal hair ratio groups achieved better improvement. Of the total participants, 62.9% noted some degree of improvement. No serious adverse events were detected. This novel approach exhibited visible effects while ensuring safety and patient satisfaction. Therefore, it holds promise as a possible therapeutic option for treating PHL, especially in women.
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Affiliation(s)
- Kazutoshi Harada
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - Manabu Ohyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Shiro Niiyama
- Department of Dermatology, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Ryokichi Irisawa
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - Kenichiro Mae
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - Miho Mori
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - Hiroko Wakimoto
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | | | - Masahiro Fukuyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Reina Hayakawa
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Masaya Takagi
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Masako Yamazaki
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Mami Miyoshi
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Saori Nishikawa
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Seiji Sato
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Yosuke Nakazawa
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Takaki Sugimoto
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Masashi Ogo
- Regenerative Medicine Research & Business. Development Department, Yokohama, Japan
| | - Ryoji Tsuboi
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
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Preinbergs JK, Ström JO, Theodorsson E, Ingberg E. Segmental hair analysis as a retrospective testosterone diary: possibilities and pitfalls. Sci Rep 2023; 13:16015. [PMID: 37749110 PMCID: PMC10519998 DOI: 10.1038/s41598-023-41672-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 08/30/2023] [Indexed: 09/27/2023] Open
Abstract
Testosterone is thought to be incorporated in growing hair strands so that specific hair segments reflect average free hormone concentrations from the corresponding time period. However, the exact mechanisms of hormone integration in scalp hair have not yet been established and it is not known how testosterone is stored in the hair segments over time. The aim of this study was to investigate the stability of testosterone concentrations in hair as it grows and to determine if segmental hair analysis can be used as a retrospective testosterone diary. Thirty men and 40 women provided two hair samples and 16 saliva samples during a period of three months. Hair growth between the two samplings was measured. Hair samples were cut into 10 mm segments resulting in three segments from the first sampling and six segments from the second sampling. Hair samples were pulverised and extracted with methanol. Hair testosterone concentrations were analysed using an in-house radioimmunoassay. Salivary testosterone was analysed using a commercial enzyme-linked immunosorbent assay (Demeditec). The results demonstrated that there is a degree of segmental hormone conservation over time (rho = 0.405-0.461, p < 0.001, n = 66-67), but also highlighted three potential confounders. Firstly, testosterone concentrations were higher in distal hair segments (mean concentration ratio most distal by most scalp-near was 1.55, SD 0.70), which may be due to continuous hormone integration from sebum and changes in hair matrix composition. Secondly, more frequent hair washing stunted the increase in testosterone concentrations in distal segments (rho = -0.404, p = < 0.001, n = 66). And lastly, intra- and inter- individual variability in hair growth rate influenced the temporal resolution along the hair, although mean growth rate was indeed 30.0 mm for three months. In a multiple regression model the biological sex, natural hair colour, and relationship status were significant explanatory variables to hair testosterone concentrations. The current results indicate that repeated hair sampling near the hair roots during a study may be preferable to analysing concentration changes between proximal and distal segments within the same hair sample. Also, hair testosterone analysis needs to be adjusted for sex and the natural hair colour.
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Affiliation(s)
- Julia K Preinbergs
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linköping University, Linköping, Sweden.
| | - Jakob O Ström
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linköping University, Linköping, Sweden
- Department of Neurology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Elvar Theodorsson
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linköping University, Linköping, Sweden
| | - Edvin Ingberg
- Department of Infectious Diseases, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
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Kinoshita-Ise M, Fukuyama M, Ohyama M. Recent Advances in Understanding of the Etiopathogenesis, Diagnosis, and Management of Hair Loss Diseases. J Clin Med 2023; 12:jcm12093259. [PMID: 37176700 PMCID: PMC10179687 DOI: 10.3390/jcm12093259] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/26/2023] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
Hair-loss diseases comprise heterogenous conditions with respective pathophysiology and clinicopathological characteristics. Major breakthroughs in hair follicle biology and immunology have led to the elucidation of etiopathogenesis of non-scarring alopecia (e.g., alopecia areata, AA) and cicatricial alopecia (e.g., lichen planopilaris, LPP). High-throughput genetic analyses revealed molecular mechanism underlying the disease susceptibility of hair loss conditions, such as androgenetic alopecia (AGA) and female pattern hair loss (FPHL). Hair loss attracted public interest during the COVID-19 pandemic. The knowledge of hair loss diseases is robustly expanding and thus requires timely updates. In this review, the diagnostic and measurement methodologies applied to hair loss diseases are updated. Of note, novel criteria and classification/scoring systems published in the last decade are reviewed, highlighting their advantages over conventional ones. Emerging diagnostic techniques are itemized with clinical pearls enabling efficient utilization. Recent advances in understanding the etiopathogenesis and management for representative hair diseases, namely AGA, FPHL, AA, and major primary cicatricial alopecia, including LPP, are comprehensively summarized, focusing on causative factors, genetic predisposition, new disease entity, and novel therapeutic options. Lastly, the association between COVID-19 and hair loss is discussed to delineate telogen effluvium as the predominating pathomechanism accounting for this sequela.
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Affiliation(s)
- Misaki Kinoshita-Ise
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo 181-8611, Japan
| | - Masahiro Fukuyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo 181-8611, Japan
| | - Manabu Ohyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo 181-8611, Japan
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Van Wicklin SA. Hair Aging in Different Races and Ethnicities. PLASTIC AND AESTHETIC NURSING 2023; 43:56-60. [PMID: 37000994 DOI: 10.1097/psn.0000000000000495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
- Sharon Ann Van Wicklin
- Sharon Ann Van Wicklin, PhD, RN, CNOR, CRNFA(E), CPSN-R, PLNC, FAAN, ISPAN-F, is Editor-in-Chief, Plastic and Aesthetic Nursing , and is a Perioperative and Legal Nurse Consultant, Aurora, CO
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Alsharif SH, AlGhamdi KM. Evaluation of Scalp Hair Density and Diameter in the Arab Population: Clinical Office-Based Phototrichogram Analysis. Clin Cosmet Investig Dermatol 2022; 15:2737-2743. [PMID: 36545499 PMCID: PMC9762255 DOI: 10.2147/ccid.s394045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
Background Knowing normal values of scalp hair thickness and density is beneficial for diagnosing hair disorders, monitoring responses to therapy, performing hair transplants, and conducting relevant research. Such normal values have not yet been studied for Arabs. Objective To assess the hair density and diameter of the Arab population at different scalp sites using phototrichogram. Methods A cross-sectional descriptive study was performed at King Saud University Medical City from December 2021 to August 2022. The study was conducted on Arab adults who were not suffering from any hair disorder. The study was conducted using a questionnaire and clinical examination by phototrichogram. Results A total of 120 participants were enrolled in this study. The mean hair density was 147.1± 7.8 hairs/cm2, and the mean hair diameter was 87±4.9 μm. There were significant differences between hair density (P=0.0001) and diameter (P=0.0001) in different regions of the scalp. Females had higher hair density than males at occiput (P=0.038). Conclusion Arab hair has a higher thickness and lower density than hair of other ethnicities. This needs to be considered when diagnosing and/or treating hair problems in Arabs.
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Affiliation(s)
- Sahar Hasan Alsharif
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Khalid M AlGhamdi
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia,Vitiligo Research Chair, College of Medicine, King Saud University, Riyadh, Saudi Arabia,Correspondence: Khalid M AlGhamdi, Department of Dermatology, Vitiligo Research Chair, College of Medicine, King Saud University, P.O. Box 240997, Riyadh, 11322, Saudi Arabia, Email
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Brito ALB, Brüggen C, Ildiz GO, Fausto R. Investigation of menopause-induced changes on hair by Raman spectroscopy and chemometrics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 275:121175. [PMID: 35344858 DOI: 10.1016/j.saa.2022.121175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
The ending of estrogen production in the ovaries after menopause results in a series of important physiologic changes, including hair texture and growth. In this study we demonstrate that Raman spectroscopy can be used successfully as a tool to probe menopause-induced changes on hair, in particular when coupled with suitable chemometrics approaches. The detailed analysis of the average Raman spectra (in particular of the Amide I and νS-S stretching spectral regions) of the hair samples of women pre- and post-menopause allowed to estimate that absence of estrogen in post-menopause women leads to an average reduction of ∼12% in the thickness of the hair cuticle, compared to that of pre-menopause women, and revealed the strong prevalence of disulphide bonds in the most stable gauche-gauche-gauche conformation in the hair cuticle. From the analysis of the νS-S stretching spectral region it could also be concluded that the amount of α-helix keratin is slightly higher for post-menopause than for pre-menopause women. A series of statistical models were developed in order to classify the hair samples. Outperforming the traditional PCA-LDA (principal component analysis - linear discriminant analysis) approach, in the present study a GA-LDA (genetic algorithm - linear discriminant analysis) strategy was used for variable reduction/selection and samples' classification. This strategy allowed to develop of a statistical model (L16), which has exceptional prediction capability (total accuracy of 96.6%, with excellent sensitivity and selectivity) and can be used as an efficient instrument for the hair samples' classification. In addition, a new chemometrics approach is here presented, which allows to overcome the intrinsic limitations of the GA algorithm and that can be used to develop statistical models that use GA as the variable reduction/selection method, but superseding its stochastic nature. Three suitable models for classification of the hair samples according to the menopause status of the women were developed using this novel approach (LV17, BLV20 and PLS7 models), which are based on the Fisher's and Bayers' LDA approaches and the PLS-DA method. The followed new chemometrics approach uses the results of a large set of GA-LDA runs over the full data matrix for the selection of the reduced data matrices. The criterion for the selection of the variables is their statistical significance in terms of number of occurrences as solutions of the whole set of GA-LDA runs.
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Affiliation(s)
- Anna Luiza B Brito
- CQC-IMS, Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal.
| | - Carlotta Brüggen
- Biochemistry Center, Heidelberg University, P-69120 Heidelberg, Germany
| | - Gulce Ogruc Ildiz
- CQC-IMS, Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal; Faculty of Science and Letters, Department of Physics, Istanbul Kultur University, Atakoy Campus, Bakirkoy 34156, Istanbul, Turkey
| | - Rui Fausto
- CQC-IMS, Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal
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Yoshida Y, Takahashi M, Yamanishi H, Nakazawa Y, Kishimoto J, Ohyama M. Changes in the Expression of Smooth Muscle Cell–Related Genes in Human Dermal Sheath Cup Cells Associated with the Treatment Outcome of Autologous Cell–Based Therapy for Male and Female Pattern Hair Loss. Int J Mol Sci 2022; 23:ijms23137125. [PMID: 35806129 PMCID: PMC9266963 DOI: 10.3390/ijms23137125] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 02/04/2023] Open
Abstract
In a clinical study of autologous cell–based therapy using dermal sheath cup (DSC) cells, the treatment of hair loss showed improvements. However, the outcomes were variable. Here, correlations between marker gene expression in DSC cells and treatment outcomes were assessed to predict therapeutic efficacy. Overall, 32 DSC cell lines were used to evaluate correlations between marker gene expression and treatment outcomes. Correlations between vascular pericyte and preadipocyte marker expression and treatment outcomes were inconsistent. As smooth muscle cell markers, MYOCD correlated negatively with treatment outcomes and SRF consistently demonstrated an inverse correlation. Additionally, CALD1 correlated negatively and ACTA2 correlated inversely with treatment outcomes. DSC cell lines were divided into good and moderate/poor responders to further investigate the correlations. SRF and CALD1 were lower in a good responder compared with a moderate responder. Next, DSC cells were differentiated toward dermal papilla cells. Dermal papilla markers SOX2 and LEF1 before differentiation had moderate positive and inverse correlations with the treatment outcome, respectively. SOX2 after differentiation more consistently demonstrated a positive correlation. Significant downregulation of smooth muscle–related genes was also observed after differentiation. These findings revealed putative markers for preclinical evaluation of DSC cells to improve hair loss.
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Affiliation(s)
- Yuzo Yoshida
- Regenerative Medicine Research & Business Development Section, Shiseido FS Innovation Center, Yokohama 220-0011, Japan; (M.T.); (H.Y.); (Y.N.); (J.K.)
- Correspondence: (Y.Y.); (M.O.)
| | - Miki Takahashi
- Regenerative Medicine Research & Business Development Section, Shiseido FS Innovation Center, Yokohama 220-0011, Japan; (M.T.); (H.Y.); (Y.N.); (J.K.)
| | - Haruyo Yamanishi
- Regenerative Medicine Research & Business Development Section, Shiseido FS Innovation Center, Yokohama 220-0011, Japan; (M.T.); (H.Y.); (Y.N.); (J.K.)
| | - Yosuke Nakazawa
- Regenerative Medicine Research & Business Development Section, Shiseido FS Innovation Center, Yokohama 220-0011, Japan; (M.T.); (H.Y.); (Y.N.); (J.K.)
| | - Jiro Kishimoto
- Regenerative Medicine Research & Business Development Section, Shiseido FS Innovation Center, Yokohama 220-0011, Japan; (M.T.); (H.Y.); (Y.N.); (J.K.)
| | - Manabu Ohyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo 181-8611, Japan
- Correspondence: (Y.Y.); (M.O.)
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Hashimoto M, Kawai Y, Masutani T, Tanaka K, Ito K, Iddamalgoda A. Effects of a Watercress Extract Fraction on R-spondin 1-Mediated Growth of Human Hair. Int J Cosmet Sci 2022; 44:154-165. [PMID: 35133683 DOI: 10.1111/ics.12764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 01/06/2022] [Accepted: 02/07/2022] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Hair loss and greying affect men and women of all ages, often causing psychosocial difficulties. Dickkopf-1 (DKK1), a major hair loss factor secreted from dermal papilla (DP) cells in response to the secretion of dihydrotestosterone (DHT), has been reported to induce and accelerate androgenetic alopecia (AGA). In addition, DKK1 acts as a potent suppressor of melanogenesis and is closely related to hair colour. R-spondin 1 (RSPO1) is a secretory agonist of Wnt signalling known to antagonize the effects of DKK1, including DKK1-mediated hair follicle suppression. In this study, we investigated the effect of watercress extract (WCE) on the secretion of RSPO1 and DKK1 from DP cells as well as its anti-hair loss effect in human hair follicles and patients. METHODS The in vitro secretion of RSPO1 and DKK1 was measured by ELISA. Human hair follicles were collected from the scalp of a female donor and used for ex vivo organ culture to investigate the effects of WCE on human hair loss. Finally, a 6-month human clinical trial was conducted to examine the effect of WCE-containing lotion on hair growth in a male panel. RESULTS WCE significantly upregulated RSPO1 secretion and suppressed DKK1 secretion in a dose-dependent manner, even in the presence of DHT. WCE-treated hair follicles elongated 1.6-fold compared to the control, and the level of RSPO1 production in DP as well as RSPO1 bound to the outer root sheath (ORS) increased. In the clinical trial, the hair lotion containing 2% WCE increased hair thickness and density to improve against hair loss symptoms. CONCLUSION WCE exhibited a strong anti-androgenic effect through its ability to suppress DKK1 secretion and antagonize DKK1 via RSPO1. These findings highlighted the potential use of WCE for the treatment of hair loss. These results also showed that WCE might have an effect on hair colour since DKK1 is a suppressor of melanogenesis.
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Affiliation(s)
| | - Yuka Kawai
- Research and Development Dept, Ichimaru Pharcos Co., Ltd, Gifu, Japan
| | - Teruaki Masutani
- Research and Development Dept, Ichimaru Pharcos Co., Ltd, Gifu, Japan
| | - Kiyotaka Tanaka
- Research and Development Dept, Ichimaru Pharcos Co., Ltd, Gifu, Japan
| | - Kenichi Ito
- Research and Development Dept, Ichimaru Pharcos Co., Ltd, Gifu, Japan
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Li X, Wang X, Wang C, Zhang J, Zhou C. Hair Shedding Evaluation for Alopecia: A Refined Wash Test. Clin Cosmet Investig Dermatol 2022; 15:117-126. [PMID: 35115799 PMCID: PMC8801509 DOI: 10.2147/ccid.s347898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 01/11/2022] [Indexed: 11/23/2022]
Abstract
PURPOSE The aim of this study is to establish a refined wash test (RWT) and explore the characteristics of daily shedding hair parameters in normal individuals and patients with androgenetic alopecia (AGA) or telogen effluvium (TE). MATERIALS AND METHODS Chinese subjects diagnosed as normal, AGA or TE were enrolled. For the RWT procedure, the subjects were asked to pre-wash their hair 24 hours before the first collection, then to wash and rinse their hair with flowing water above a sink covered with a piece of filtering cloth. All hairs entrapped in the filtering cloth were air dried and collected. This "wash-and-collect" process was repeated for 3 consecutive days with a 24 ± 2 hour interval. Collected hairs were counted manually, and hair diameter was measured by videodermoscope. Number and diameter of daily shedding hairs and percentage of vellus and terminal hairs were analyzed. RESULTS A total of 176 subjects participated in and completed the study. Shedding hair number during daily shampooing was 27.9 ± 12.2, 52.2 ± 28.5 and 125.5 ± 62.7 hairs in normal, AGA and TE participants, respectively, and the differences between each two of the three groups were all statistically significant. Diameter of shedding hairs was 76.9 ± 9.0 μm, 60.0 ± 9.5 μm and 82.7 ± 9.2 μm in normal, AGA and TE, respectively. Along with advancement of AGA severity, shedding hair number was generally increased, while hair diameter decreased. The percentage of vellus hairs in AGA was significantly higher than in the normal and TE groups (8.3 ± 6.6% vs 1.0 ± 1.6% and 1.0 ± 1.0%). The combination of shedding hair number and percentage of vellus hairs had a high diagnostic confidence (AUC = 0.957) to diagnose AGA from normal. Shedding hair number alone showed high confidence to diagnose TE from normal (AUC = 0.999). CONCLUSION The non-invasive, easy-to-use RWT established in this study is a valuable tool to evaluate daily shedding hairs, which may be useful in diagnosis, dynamic monitoring of disease progression and treatment efficacy.
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Affiliation(s)
- Xiangqian Li
- Department of Dermatology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Xianghe Wang
- Department of Dermatology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Chen Wang
- Department of Dermatology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Jianzhong Zhang
- Department of Dermatology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Cheng Zhou
- Department of Dermatology, Peking University People's Hospital, Beijing, People's Republic of China
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Abdel Hay R, Sayed KS, Hegazi SA, Nada A, Amer MA. Trichoscopic features of hair and scalp in noncomplaining individuals: A descriptive study. J Cosmet Dermatol 2021; 21:3934-3942. [PMID: 34932866 DOI: 10.1111/jocd.14694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 11/09/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Trichoscopy is a simple noninvasive tool that is used in calculating different hair parameters and the diagnosis of different hair/scalp diseases at variable magnifications. OBJECTIVE The aim of this work is to describe the features and parameters of hair and scalp in a healthy sample of Egyptian population using videodermoscopy. This may help to provide standard range of measurements of normal hair in both males and females. METHODS A nonrandomized, observational study for features and parameters of hair structure, performed on 368 healthy Egyptian subjects with no hair/scalp complaint. RESULTS Each scalp area has its own vascular pattern. Male subjects showed different values regarding their hair parameters from the female subjects. No significant difference was seen after application of hair dye, except for few values. In both genders, there was a change in hair parameters with age. Smoking had a negative influence on hair parameters. CONCLUSION Hair features and parameters observed in our population are different from those reported by other populations. Smoking affects hair thickness and density. Dyed hair has greater thickness mostly due to the protective effect of hair conditioners.
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Affiliation(s)
- Rania Abdel Hay
- Dermatology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Khadiga S Sayed
- Dermatology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Soha Ahmad Hegazi
- Dermatology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Ahmed Nada
- Dermatology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Marwa Ahmed Amer
- Dermatology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
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Harada Y, Niiyama S, Fukuda H. The Review of the Difference between Patients and Physicians in Terms of Severity Assessment and Therapeutic Goals in Androgenetic Alopecia in Japan. Case Rep Dermatol 2021; 13:492-496. [PMID: 34720924 PMCID: PMC8543308 DOI: 10.1159/000519657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/15/2021] [Indexed: 11/19/2022] Open
Abstract
We often come across differences in the severity of androgenetic alopecia (AGA) as assessed subjectively by the patients themselves and objectively by the attending physicians. For the purpose of examining the differences in the assessment of AGA between patients and physicians, we presented the Norwood classification to male patients and the Shiseido classification to female patients and asked them to assess the degree of hair loss by themselves. We compared the results with the severity as assessed by 2 specified dermatologists. The results show that the assessments of the severity of AGA were consistent between the patients and physicians in 42% (15/36) of cases, the physicians reported a higher grade of severity than the patients themselves in 30% (11/36) of cases, and the patients reported a higher grade of severity than the physicians in 28% (10/36) of cases; however, the Wilcoxon signed rank statistical analysis showed no significant difference between the patients and physicians assessments. AGA should be treated in accordance with individual symptoms and wishes and not a standardized treatment protocol.
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Affiliation(s)
- Yuya Harada
- Department of Dermatology, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Shiro Niiyama
- Department of Dermatology, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Hidetsugu Fukuda
- Department of Dermatology, Toho University Ohashi Medical Center, Tokyo, Japan
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13
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Turlier V, Mengeaud V, Lauze C, Kottner J, Blume-Peytavi U. Quantitative and physical characterization of normal hair ageing in White European women: a single-centre study. J Eur Acad Dermatol Venereol 2021; 35 Suppl 2:21-23. [PMID: 34668239 DOI: 10.1111/jdv.17246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- V Turlier
- Pierre Fabre Dermo-Cosmétique, Centre de Recherche sur la Peau, Toulouse, France
| | - V Mengeaud
- Medical Affairs Department, Pierre Fabre Laboratories, Lavaur, France
| | - C Lauze
- Pierre Fabre Dermo-Cosmétique, Centre de Recherche sur la Peau, Toulouse, France
| | - J Kottner
- Department of Dermatology, Venerology and Allergology, Clinical Research Center for Hair and Skin Science, Charité - Universitätsmedizin, Berlin, Germany
| | - U Blume-Peytavi
- Department of Dermatology, Venerology and Allergology, Clinical Research Center for Hair and Skin Science, Charité - Universitätsmedizin, Berlin, Germany
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14
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Natpracha W, Sukanjanapong S, Chanprapaph K, Suchonwanit P. Characterization and classification of different female hairline patterns in the Thai population. J Cosmet Dermatol 2020; 20:890-896. [PMID: 32783356 DOI: 10.1111/jocd.13642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/07/2020] [Accepted: 07/23/2020] [Indexed: 01/21/2023]
Abstract
BACKGROUND The hairline is an essential component of the human face. Disfigurement of the hairline may cause physical and psychological problems. Standard guidelines do not exist for female hairline designs, average values of infratemporal portion, hairline classifications, and preferences. AIMS We aimed to study hairline characteristics in Thai females and further compare the values with previous studies in different populations. Furthermore, we aimed to introduce a comprehensive hairline classification system that allowed an easy and detailed phenotypic characterization of female hairline. PATIENTS/METHODS Healthy Thai females aged over 18 years were included in the study. Collection of demographic data, infratemporal measurements, and standard photography was performed. All collected data were analyzed to determine the standard values of each hairline dimension for comparison to previous studies. RESULTS Two hundred and twenty-nine females, with a mean age of 32.4 ± 8.6 years, participated in this study. The mean mid-frontal line was 6.45 ± 0.89 cm, which was not correlated with age. Lateral mounds, widow's peaks, and cowlicks were observed in 42.35%, 24.45%, and 1.74% participants, respectively. Our study revealed five patterns of the frontal hairline and four patterns of the temporal hairline. The mid-frontal line in Asian females trended longer than that in Caucasians, without statistical significance. CONCLUSIONS Measurements of the infratemporal portions in Thai females revealed no change with age, and the mid-frontal line showed no statistically significant differences between Korean and Turkish participants. The hairline classification system introduced in our study was comprehensive and would be easily applicable in clinical practice. Female hairline dimensions and patterns reported in our study could provide reference values for hairline design in hairline restoration surgery as well as assist in accurate diagnosis of hair disorders.
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Affiliation(s)
- Wasrin Natpracha
- Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Siriorn Sukanjanapong
- Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Kumutnart Chanprapaph
- Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Poonkiat Suchonwanit
- Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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15
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Ahn JH, Park YE, Kim B, Park CW, Sim TH, Lee TK, Lee JC, Park JH, Kim JD, Lee HS, Won MH. Hair Growth is Promoted in Mouse Dorsal Skin by a Mixture of Platycladus orientalis (L.) Franco Leaf Extract and Alpha-Terpineol by Increasing Growth Factors and wnt3/β-Catenin. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20951433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, we investigated the effect of a mixture of Platycladus orientalis (L.) Franco leaf extract and α-terpineol, a natural monoterpene alcohol (PEaT), on hair growth and its mechanisms. C57/BL6 mice (total n = 14) in the telogen phase of hair growth were used. Either distilled water as vehicle or PEaT was topically applied to the dorsal skin for 17 days. Chronological hair growth change was examined by hair growth-promoting scores. In addition, to find out mechanisms of PEaT on hair growth, insulin-like growth factor-1 (IGF-1), vascular endothelial growth factor (VEGF), Ki-67, wnt3, and β-catenin expressions were investigated by using immunohistochemistry. We found that PEaT remarkably promoted hair growth by inducing early anagen transition compared with the control group. In addition, treatment with PEaT significantly increased numbers of Ki-67-positive cells and expressions of IGF-1, VEGF, wnt3, and β-catenin in the outer root sheath. These results indicate that PEaT used in this study might be a good hair growth promoter, showing that PEaT treatment increased growth factors and cell proliferation through upregulation of wnt3 and β-catenin expressions.
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Affiliation(s)
- Ji Hyeon Ahn
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology, Hallym University, Chuncheon, Gangwon, Republic of Korea
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon, Republic of Korea
| | - Young Eun Park
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon, Republic of Korea
| | - Bora Kim
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon, Republic of Korea
| | - Cheol Woo Park
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon, Republic of Korea
| | - Tae Heung Sim
- Leefarm Co. Ltd., Hongcheon, Gangwon, Republic of Korea
| | - Tae-Kyeong Lee
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology, Hallym University, Chuncheon, Gangwon, Republic of Korea
| | - Jae-Chul Lee
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon, Republic of Korea
| | - Joon Ha Park
- Department of Anatomy, College of Korean Medicine, Dongguk University, Gyeongju, Gyeongbuk, Republic of Korea
| | - Jong-Dai Kim
- Division of Food Biotechnology, School of Biotechnology, Kangwon National University, Chuncheon, Gangwon, Republic of Korea
| | - Hyun Sam Lee
- Leefarm Co. Ltd., Hongcheon, Gangwon, Republic of Korea
| | - Moo-Ho Won
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon, Republic of Korea
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16
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Hennekam RCM. The external phenotype of aging. Eur J Med Genet 2020; 63:103995. [PMID: 32726674 DOI: 10.1016/j.ejmg.2020.103995] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/27/2020] [Accepted: 06/26/2020] [Indexed: 12/17/2022]
Abstract
Aging is widely studied as a physiological process. Segmental aging can also occur prematurely in Mendelian disorders, and these can act this way as excellent sources of information, specifically for the underlying mechanisms. Adequate recognition of such aging characteristics in Mendelian disorders needs a well-defined phenotype of aging. Here the external phenotype of aging is described that can be recognized in the consulting room without major additional studies. Existing definitions of the signs and symptoms in Elements of Morphology or Human Phenotype Ontology are added or a new definition is suggested if none is available.
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Affiliation(s)
- Raoul C M Hennekam
- Department of Paediatrics, Room H7-236, Amsterdam UMC - location AMC, Meibergdreef 9, 1105AZ, Amsterdam, the Netherlands.
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17
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Tsuboi R, Niiyama S, Irisawa R, Harada K, Nakazawa Y, Kishimoto J. Autologous cell-based therapy for male and female pattern hair loss using dermal sheath cup cells: A randomized placebo-controlled double-blinded dose-finding clinical study. J Am Acad Dermatol 2020; 83:109-116. [PMID: 32147390 DOI: 10.1016/j.jaad.2020.02.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 11/24/2022]
Abstract
BACKGROUND Few effective treatments are available for male pattern hair loss (MPHL) or, especially, for female pattern hair loss (FPHL). Recently, cell-based therapies using autologous or allogeneic cells have been used clinically. OBJECTIVE We examined the safety and efficacy of autologous cell-based therapy using dermal sheath cup (DSC) cells to treat MPHL and FPHL. METHODS DSCs dissected from occipital hair follicles were cultured to manufacture DSC cells. Participants with MPHL or FPHL received single injections of 7.5 × 106, 1.5 × 106, or 3.0 × 105 DSC cells or a placebo in 4 randomized separate regions on the scalp, and hair densities and diameters were measured for 3, 6, 9, and 12 months. RESULTS Fifty men and 15 women aged 33 to 64 years were injected with DSC cells. Total hair density and cumulative hair diameter at the 3.0 × 105 DSC cells injection site was significantly increased compared with the placebo after 6 and 9 months. Men and women showed similar improvements, and there were no serious adverse events. LIMITATIONS No lower cell numbers were tested, and the positive effect was temporary until 9 months. CONCLUSION The results suggest that cell therapy with autologous DSC cells may be useful as a new therapeutic method for treating MPHL and FPHL.
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Affiliation(s)
- Ryoji Tsuboi
- Tokyo Medical University Hospital, Department of Dermatology, Tokyo, Japan.
| | - Shiro Niiyama
- Toho University Ohashi Medical Center, Department of Dermatology, Tokyo, Japan
| | - Ryokichi Irisawa
- Tokyo Medical University Hospital, Department of Dermatology, Tokyo, Japan
| | - Kazutoshi Harada
- Tokyo Medical University Hospital, Department of Dermatology, Tokyo, Japan
| | - Yosuke Nakazawa
- Shiseido FS Innovation Center, Regenerative Medicine Research & Business Development Section, Yokohama, Japan
| | - Jiro Kishimoto
- Shiseido FS Innovation Center, Regenerative Medicine Research & Business Development Section, Yokohama, Japan
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18
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Davies C, Gautam L, Grela A, Morrissey J. Variability associated with interpreting drugs within forensic hair analysis: A three-stage interpretation. J Appl Toxicol 2020; 40:868-888. [PMID: 32126591 DOI: 10.1002/jat.3959] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 01/31/2020] [Accepted: 02/08/2020] [Indexed: 11/11/2022]
Abstract
Hair analysis is capable of determining both an individual's long-term drug history and a single exposure to a drug, which can be particularly important for corroborating incidents of drug-facilitated crimes. As a source of forensic evidence that may be used in a court of law, it must be credible, impartial and reliable, yet the pathways of drug and metabolite entry into hair are still uncertain. Many variables may influence drug analysis results, most of which are outside of the control of an analyst. An individual's pharmacokinetic and metabolic responses, hair growth rates, drug incorporation routes, axial migration, ethnicity, age and gender, for example, all display interpersonal variability. At present there is little standardization of the analytical processes involved with hair analysis. Both false positives and negative results for drugs are frequently encountered, regardless of whether a person has consumed a drug or not. In this regard, we have categorized these variables and proposed a three-stage analytical approach to facilitate forensic toxicologists, hair analysis experts, judiciaries and service users in the analytical and interpretation process.
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Affiliation(s)
- Christopher Davies
- Forensic and Investigative Studies, School of Life Science, Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK
| | - Lata Gautam
- Forensic and Investigative Studies, School of Life Science, Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK
| | - Agatha Grela
- School of Human and Social Sciences, University of West London, Brentford, London, UK
| | - Joanne Morrissey
- Forensic and Investigative Studies, School of Life Science, Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK
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19
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Evaluation of Hair Density and Hair Diameter in the Adult Thai Population Using Quantitative Trichoscopic Analysis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2476890. [PMID: 32104683 PMCID: PMC7035527 DOI: 10.1155/2020/2476890] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 01/06/2020] [Indexed: 11/29/2022]
Abstract
The data of hair density and hair diameter in the Asian population, especially in Thais, are limited. We aimed to evaluate hair density and hair diameter of members of the Thai population at different scalp sites and to determine the effect of sex and aging as well as to compare the results with those in groups of other ethnicities. Healthy Thais whose hair examination findings were normal were evaluated. Two hundred and thirty-nine subjects participated in this study, of whom 79 were male and 160 were female. Hair density and hair diameter were analyzed at four different scalp sites using quantitative trichoscopic analysis. The highest hair density in Thais was observed in the vertex area. Hair densities at four different scalp sites were significantly different from one another; only hair density at the vertex site showed no significant difference from that in the occipital area. In contrast, hair diameter did not show any statistically significant differences for the different sites. We observed decreased mean hair density with increasing age and found statistically significant differences between participants in their 20s and those in their 60s, while hair diameter remained consistent. Comparing our results with a previous study in other ethnicities, the hair densities in Asians are generally lower. In conclusion, hair density in the Thai population varies at different scalp sites. Aging is a factor in declining hair density. Asians have a lower hair density compared to Caucasian and African populations.
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20
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Fernandez-Flores A, Saeb-Lima M, Cassarino DS. Histopathology of aging of the hair follicle. J Cutan Pathol 2019; 46:508-519. [PMID: 30932205 DOI: 10.1111/cup.13467] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/12/2019] [Accepted: 03/25/2019] [Indexed: 12/17/2022]
Abstract
Hair follicles experience several changes with aging, the most noticeable of which is graying of the hair shaft due to loss of melanin. Additional changes in the diameter and length of the hair have contributed to the concept of senescent alopecia, which is different from androgenetic alopecia according to most. Graying happens in most individuals, although in different grades and starting at different ages. It is related to a decrease in the number and activity of the melanocytes of the hair bulb, which eventually completely disappear from the bulb of the white hair. Residual non-active melanocytes remain in the outer root sheath and in the bulge, which allows for repigmentation of the hair under certain stimuli or conditions.
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Affiliation(s)
- Angel Fernandez-Flores
- Department of Cellular Pathology, Hospital El Bierzo, Ponferrada, Spain.,Department of the CellCOM-SB Research Group, Biomedical Investigation Institute of A Coruña, A Coruña, Spain.,Department of Cellular Pathology, Hospital de la Reina, Ponferrada, Spain
| | - Marcela Saeb-Lima
- Department of Dermatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.,Department of Dermatopathology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - David S Cassarino
- Department of Pathology, Los Angeles Medical Center (LAMC), Southern California Kaiser Permanente, Los Angeles, California
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21
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Koren G, Bellaish E, Maman K. Withdrawn: Hair Analysis for Drug-Facilitated Crime: The Critical Role of Hair Growth Rate. J Forensic Sci 2019; 64:1574-1575. [PMID: 30695095 DOI: 10.1111/1556-4029.14013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/08/2019] [Accepted: 01/10/2019] [Indexed: 11/30/2022]
Abstract
Hair analysis is increasingly used in detecting drug-facilitated crime (DFC) claiming success in identifying even single dose exposures. The calculation of accurate deposition time of the drug in hair is typically based on the assumption of mean hair growth of 1 cm/month. We describe a case of potential exposure to flunitrazepam. Assuming the literature average hair growth rate of 1 cm/month, the alleged victim had measurable amounts of the 7 amino flunitrazepam a month after the alleged drug exposure. However, in this case, due to hair dying, the true growth rate could be quantified at 1.5 cm/month. This difference has led to different interpretation from the one based on the average assumed hair growth of 1 cm/month. In conclusion, hair growth rate can be a critical variable in verifying the alleged time of drug exposure.
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Affiliation(s)
- Gideon Koren
- Maccabi Kahn Research Institute, 4 Koifman Street, 8th Floor, Tel Aviv, Israel
| | - Elad Bellaish
- Israeli Ministry of Law, Nazeret Ilit, Israel 21735-070
| | - Karen Maman
- Israeli Ministry of Law, Nazeret Ilit, Israel 21735-070
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22
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Mai W, Sun Y, Liu X, Lin D, Lu D. Characteristic findings by phototrichogram in southern Chinese women with Female pattern hair loss. Skin Res Technol 2019; 25:447-455. [PMID: 30614573 DOI: 10.1111/srt.12672] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/08/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To investigate the characteristics of hairs in Female pattern hair loss (FPHL) patients and healthy females in Southern China. MATERIALS AND METHODS Three fundamental hair parameters in different scalp areas of 90 Southern Chinese FPHL patients and 83 healthy controls were analyzed by phototrichogram. RESULTS Female pattern hair loss patients showed reduced hair density, hair diameter, and terminal/vellus hair ratio. The reduction correlated with the severity of Ludwig staging. Midscalp was the most affected area in FPHL, but occipital and temporal sites were also involved. In normal women, the highest hair density was observed in midscalp, followed by occipital and temporal areas. Peak hair density at midscalp sites was reached at 20s group, then declined with age. Maximum hair diameter at midscalp and occipital sites occurred in 40s group. Terminal/vellus hair ratio tended to increase with age and peak on 50-60s group. CONCLUSION Reduced hair density and hair diameter, and miniaturization of hair follicles are the characteristics of FPHL in Southern Chinese women. Occipital and temporal sites are also affected in FPHL. Age-associated changes might have an influence on the hair condition. The values of hair parameters obtained in this study will help to establish reference data for better evaluation of hair disorders.
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Affiliation(s)
- Weihua Mai
- Department of Preventive Medicine, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Yixian Sun
- Jiang Mei Li Gynecological clinic, Xinzhu, Taiwan
| | - Xingwei Liu
- Department of General Surgery, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Daojian Lin
- Department of Preventive Medicine, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Dongqing Lu
- Department of Dermatology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
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23
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Lee HE, Lee SH, Jeong M, Shin JH, Ahn Y, Kim D, Oh SH, Yun SH, Lee KJ. Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes. ACS NANO 2018; 12:9587-9595. [PMID: 30125485 DOI: 10.1021/acsnano.8b05568] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Alopecia is considered an aesthetic, psychological, and social issue among modern people. Although laser-induced skin stimulation is utilized for depilation treatment, such treatment has significant drawbacks of high energy consumption, huge equipment size, and limited usage in daily life. Here, we present a wearable photostimulator for hair-growth applications using high-performance flexible red vertical light-emitting diodes (f-VLEDs). Flexible microscale LEDs were effectively fabricated by a simple monolithic fabrication process, resulting in high light output (∼30 mW mm-2), low forward voltage (∼2.8 V), and excellent flexibility for wearable biostimulation. Finally, trichogenic stimulation of a hairless mouse was achieved using high-performance red f-VLEDs with high thermal stability, device uniformity, and mechanical durability.
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Affiliation(s)
- Han Eol Lee
- Department of Materials Science and Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea
| | - Seung Hyun Lee
- Department of Materials Science and Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea
| | - Minju Jeong
- Department of Biological Sciences , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea
| | - Jung Ho Shin
- Department of Materials Science and Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea
| | - Yuri Ahn
- Department of Dermatology and Cutaneous Biology Research Institute , Severance Hospital Yonsei University College of Medicine , 50-1 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea
| | - Daesoo Kim
- Department of Biological Sciences , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea
| | - Sang Ho Oh
- Department of Dermatology and Cutaneous Biology Research Institute , Severance Hospital Yonsei University College of Medicine , 50-1 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea
| | - Seok Hyun Yun
- Wellman Center for Photomedicine , Harvard Medical School and Massachusetts General Hospital , 65 Landsdowne Street Up-5 , Cambridge , Massachusetts 02139 , United States
| | - Keon Jae Lee
- Department of Materials Science and Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea
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25
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Abstract
Background: Global photographs (GPs) have been widely used to grade the severity in female pattern hair loss (FPHL). However, existing classifications for FPHL are not useful in the evaluation of early FPHL. Although there are some variations in early FPHL, even to a mild degree, all types of early FPHL are included in just one category. Therefore, the authors have devised a grading system for early FPHL with five levels focusing on the changes revealed by the surface reflected light of flash generated on GPs. Aims: This study aims to examine the possibility of evaluating the treatment course of early FPHL using the grading system based on changes in hair surface reflection patterns. Subjects and Methods: Retrospective chart review of 114 early FPHL patients was performed. GPs of these patients were classified into five grades. Photographs of the lowest and the highest grades of each patient were selected and paired. First, the relevance between the value of FPHL-severity index (FPHL-SI) and grades of all the selected photos was analyzed. Next three volunteers graded the paired photographs and chose the milder degree, and then, the concordance rate among author's and volunteers' evaluations were analyzed. Results: The value of FPHL-SI and incidence rate of hair diameter diversity tended to rise along with increasing of GP grade. Concordance rate of grading among author and more than two volunteers was 57%. The concordance rate of course evaluation between author and two volunteers was 97%. Conclusion: The new classification can finely classify the grade of early FPHL and can be used for treatment course evaluation.
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Affiliation(s)
- Akiko Kaneko
- Department of Plastic Surgery, Bona Dea Clinic, Yokohama, Tokyo, Japan
| | - Tsuyoshi Kaneko
- Department of Plastic Surgery, Bona Dea Clinic, Yokohama, Tokyo, Japan.,Division of Plastic Surgery, National Center for Child Health and Development, Tokyo, Japan
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26
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Rojhirunsakool S, Suchonwanit P. Parietal scalp is another affected area in female pattern hair loss: an analysis of hair density and hair diameter. Clin Cosmet Investig Dermatol 2017; 11:7-12. [PMID: 29343978 PMCID: PMC5749551 DOI: 10.2147/ccid.s153768] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose Female pattern hair loss (FPHL) is a common hair disease. However, studies of the quantitative measurement of FPHL are still limited. The aim of this study was to investigate the characteristics of hair density and hair diameter in normal women and FPHL patients, and further correlate the quantitative measurement with the clinical presentation of FPHL. Patients and methods An evaluation of 471 FPHL patients and 236 normal women was carried out according to the Ludwig classification, and analysis was performed by using a com-puterized handheld USB camera with computer-assisted software. Various areas of the scalp, including frontal, parietal, midscalp, and occipital, were analyzed for hair density, non-vellus hair diameter, and percentage of miniaturized hair. Results The hair density in normal women was the highest and the lowest in the midscalp and parietal areas, respectively. The FPHL group revealed the lowest hair density in the parietal area. Significant differences in hair density, non-vellus hair diameter, and percentage of miniaturized hair between the normal and FPHL groups were observed, especially in the midscalp and parietal areas. Conclusion The parietal area is another important affected area in FPHL in addition to the midscalp area. This finding provides novel important information of FPHL and will be useful for hair transplant surgeons choosing the optimal donor sites for hair transplantation in women.
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Affiliation(s)
- Salinee Rojhirunsakool
- Department of Medicine, Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Poonkiat Suchonwanit
- Department of Medicine, Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Relative studies between hair index, hair area, and medullary index with age and sex in Thai scalp hair. Forensic Sci Int 2016; 267:196-203. [DOI: 10.1016/j.forsciint.2016.08.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 08/04/2016] [Accepted: 08/20/2016] [Indexed: 11/20/2022]
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Abstract
BACKGROUND Female pattern hair loss (FPHL), or androgenic alopecia, is the most common type of hair loss affecting women. It is characterised by progressive shortening of the duration of the growth phase of the hair with successive hair cycles, and progressive follicular miniaturisation with conversion of terminal to vellus hair follicles (terminal hairs are thicker and longer, while vellus hairs are soft, fine, and short). The frontal hair line may or may not be preserved. Hair loss can have a serious psychological impact on women. OBJECTIVES To determine the efficacy and safety of the available options for the treatment of female pattern hair loss in women. SEARCH METHODS We updated our searches of the following databases to July 2015: the Cochrane Skin Group Specialised Register, CENTRAL in the Cochrane Library (2015, Issue 6), MEDLINE (from 1946), EMBASE (from 1974), PsycINFO (from 1872), AMED (from 1985), LILACS (from 1982), PubMed (from 1947), and Web of Science (from 1945). We also searched five trial registries and checked the reference lists of included and excluded studies. SELECTION CRITERIA We included randomised controlled trials that assessed the efficacy of interventions for FPHL in women. DATA COLLECTION AND ANALYSIS Two review authors independently assessed trial quality, extracted data and carried out analyses. MAIN RESULTS We included 47 trials, with 5290 participants, of which 25 trials were new to this update. Only five trials were at 'low risk of bias', 26 were at 'unclear risk', and 16 were at 'high risk of bias'.The included trials evaluated a wide range of interventions, and 17 studies evaluated minoxidil. Pooled data from six studies indicated that a greater proportion of participants (157/593) treated with minoxidil (2% and one study with 1%) reported a moderate to marked increase in their hair regrowth when compared with placebo (77/555) (risk ratio (RR) = 1.93, 95% confidence interval (CI) 1.51 to 2.47; moderate quality evidence). These results were confirmed by the investigator-rated assessments in seven studies with 1181 participants (RR 2.35, 95% CI 1.68 to 3.28; moderate quality evidence). Only one study reported on quality of life (QoL) (260 participants), albeit inadequately (low quality evidence). There was an important increase of 13.18 in total hair count per cm² in the minoxidil group compared to the placebo group (95% CI 10.92 to 15.44; low quality evidence) in eight studies (1242 participants). There were 40/407 adverse events in the twice daily minoxidil 2% group versus 28/320 in the placebo group (RR 1.24, 95% CI 0.82 to 1.87; low quality evidence). There was also no statistically significant difference in adverse events between any of the individual concentrations against placebo.Four studies (1006 participants) evaluated minoxidil 2% versus 5%. In one study, 25/57 participants in the minoxidil 2% group experienced moderate to greatly increased hair regrowth versus 22/56 in the 5% group (RR 1.12, 95% CI 0.72 to 1.73). In another study, 209 participants experienced no difference based on a visual analogue scale (P = 0.062; low quality evidence). The assessments of the investigators based on three studies (586 participants) were in agreement with these findings (moderate quality evidence). One study assessed QoL (209 participants) and reported limited data (low quality evidence). Four trials (1006 participants) did not show a difference in number of adverse events between the two concentrations (RR 1.02, 95% CI 0.91 to 1.20; low quality evidence). Both concentrations did not show a difference in increase in total hair count at end of study in three trials with 631 participants (mean difference (MD) -2.12, 95% CI -5.47 to 1.23; low quality evidence).Three studies investigated finasteride 1 mg compared to placebo. In the finasteride group 30/67 participants experienced improvement compared to 33/70 in the placebo group (RR 0.95, 95% CI 0.66 to 1.37; low quality evidence). This was consistent with the investigators' assessments (RR 0.77, 95% CI 0.31 to 1.90; low quality evidence). QoL was not assessed. Only one study addressed adverse events (137 participants) (RR 1.03, 95% CI 0.45 to 2.34; low quality evidence). In two studies (219 participants) there was no clinically meaningful difference in change of hair count, whilst one study (12 participants) favoured finasteride (low quality evidence).Two studies (141 participants) evaluated low-level laser comb therapy compared to a sham device. According to the participants, the low-level laser comb was not more effective than the sham device (RR 1.54, 95% CI 0.96 to 2.49; and RR 1.18, 95% CI 0.74 to 1.89; moderate quality evidence). However, there was a difference in favour of low-level laser comb for change from baseline in hair count (MD 17.40, 95% CI 9.74 to 25.06; and MD 17.60, 95% CI 11.97 to 23.23; low quality evidence). These studies did not assess QoL and did not report adverse events per treatment arm and only in a generic way (low quality evidence). Low-level laser therapy against sham comparisons in two separate studies also showed an increase in total hair count but with limited further data.Single studies addressed the other comparisons and provided limited evidence of either the efficacy or safety of these interventions, or were unlikely to be examined in future trials. AUTHORS' CONCLUSIONS Although there was a predominance of included studies at unclear to high risk of bias, there was evidence to support the efficacy and safety of topical minoxidil in the treatment of FPHL (mainly moderate to low quality evidence). Furthermore, there was no difference in effect between the minoxidil 2% and 5% with the quality of evidence rated moderate to low for most outcomes. Finasteride was no more effective than placebo (low quality evidence). There were inconsistent results in the studies that evaluated laser devices (moderate to low quality evidence), but there was an improvement in total hair count measured from baseline.Further randomised controlled trials of other widely-used treatments, such as spironolactone, finasteride (different dosages), dutasteride, cyproterone acetate, and laser-based therapy are needed.
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Affiliation(s)
- Esther J van Zuuren
- Leiden University Medical CenterDepartment of DermatologyPO Box 9600B1‐QLeidenNetherlands2300 RC
| | | | - Jan Schoones
- Leiden University Medical CenterWalaeus LibraryPO Box 9600LeidenNetherlands2300 RC
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Rizer RL, Stephens TJ, Herndon JH, Sperber BR, Murphy J, Ablon GR. A Marine Protein-based Dietary Supplement for Subclinical Hair Thinning/Loss: Results of a Multisite, Double-blind, Placebo-controlled Clinical Trial. Int J Trichology 2016; 7:156-66. [PMID: 26903744 PMCID: PMC4738482 DOI: 10.4103/0974-7753.171573] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Introduction: Since skin and hair quality are potent vitality signals, and hair growth deficiency can cause significant psychological morbidity. In addition to clearly-defined hair loss disorders, milder forms of hair thinning or hair loss appear to be increasingly common, with a suggestion that sub-optimal diets and stressful lifestyles may be involved. Methods: Here we assess the value of a dietary marine-extract based dietary supplement in premenopausal women with subclinical hair thinning or hair loss conditions. This multi-site, randomized double-blind, placebo-controlled clinical trial was conducted with impact on hair shedding rate and hair fiber diameter (assessed by phototrichogram) as primary end points upon consumption of the oral supplement compared to a placebo. A total of 96 eligible female subjects were enrolled aged 21–55 years of age from Asian, Caucasian, and Hispanic ethnic backgrounds. Results: This study showed that hair shedding was significantly reduced in the first 3–6 months of daily consumption of the oral supplement. Moreover, phototrichogram image analysis revealed a statistically significant increase in the mean vellus-like hair diameter after 6 months of supplement consumption, when compared to the mean vellus-like hair diameters measured at baseline. Discussion: These results support the view that a nutritional supplement approach may be useful for women in this age group to deal with subclinical hair thinning or hair loss conditions, and those components of this marine extract-based oral supplement may be a useful adjunct.
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Affiliation(s)
- Ronald L Rizer
- Thomas J Stephens and Associates Inc., Colorado Research Center, Colorado Springs, CO, USA
| | - Thomas J Stephens
- Thomas J Stephens and Associates Inc., Texas Research Center, Richardson, TX, USA
| | - James H Herndon
- Thomas J Stephens and Associates Inc., Texas Research Center, Richardson, TX, USA
| | - Brian R Sperber
- Thomas J Stephens and Associates Inc., Colorado Research Center, Colorado Springs, CO, USA
| | | | - Glynis R Ablon
- Department of Dermatology, UCLA School of Medicine, Los Angeles, CA, USA
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Kavitha S, Natarajan K, Thilagavathi G, Srinivas CR. Effect of Oil Application, Age, Diet, and Pigmentation on the Tensile Strength and Breaking Point of Hair. Int J Trichology 2016; 8:155-159. [PMID: 28442869 PMCID: PMC5387873 DOI: 10.4103/0974-7753.203170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Hair strength depends on various factors such as nutrition, environmental factors, sunlight, oiling, aging, conditioner, etc. AIM To compare the tensile strength and breaking point of the hair shaft between (1) vegetarian and nonvegetarian. (2) Those who regularly apply and those who do not apply oil. (3) Pigmented and nonpigmented hair, (4) childhood and elderly. MATERIALS AND METHODS Hair fibers were mounted in tensile strength testing machine Zwick/Roell Z010 and gradual force was administered. The elongation of hair fiber in mm and the maximum force required to break the hair strand were recorded for each fiber. RESULTS Elasticity of the children's hair was more than the elasticity of adult (P = 0.05) although tensile strength in children hair was not statistically significant (>0.05). Similarly, the tensile strength was more among those who regularly consumed nonvegetarian food but the difference was not statistically significant (P > 0.05). There was no statistically significant difference in other groups (P > 0.05). CONCLUSION Elasticity in children hair is statistically more than elderly hair although there is no significant change in tensile strength.
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Affiliation(s)
- S Kavitha
- Department of Dermatology, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India
| | - Karthika Natarajan
- Department of Dermatology, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India
| | - G Thilagavathi
- Department of Textile and Fashion Technology, PSG College of Technology, Coimbatore, Tamil Nadu, India
| | - C R Srinivas
- Department of Skin and STD, Coimbatore, Tamil Nadu, India
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Schweiger D, Hoff A, Scheede S, Fischer F, Tilsner J, Lüttke J, Neumann Y, Hagens R. Towards a body hair atlas of women of caucasian ethnicity. Int J Cosmet Sci 2015; 38:409-20. [PMID: 26707916 DOI: 10.1111/ics.12304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 12/17/2015] [Indexed: 11/27/2022]
Abstract
OBJECTIVE A preliminary study was conducted in 17 female volunteers (mean age 29.8 years) to gain deeper insights into the characteristics of terminal Caucasian female body hair of different body parts. The focus on Caucasian women was driven by the high number of different scalp hair phenotypes in this ethnicity and intended to identify relevant differences between body areas to improve body hair removal approaches. METHODS Multiple growth parameters and structural parameters were assessed for hair on the upper arm, forearm, upper leg, lower leg, axilla and intimate area and compared to scalp data. RESULTS In particular, macroscopic and much less microscopic or hair surface properties differ strikingly in the investigated body areas. Hair density on the body is much lower than on scalp with the highest hair density in the axilla and intimate area. Multihair follicular units are described for scalp but were also found to a smaller proportion in the axilla and the intimate area. Substantial percentages of hair triplets are only found on the scalp and intimate area. Hair diameter is highest in the intimate area, followed by axillary and lower leg hair and correlates with a faster hair growth rate. The angle of emerging hair is smallest in the intimate area, axilla and on the lower leg. Hair shafts on the lower leg and in the axilla have most overlapping cuticle layers, but independent of body region, no significant differences in the mean thickness of cuticle layers were detectable. In addition, no differences were found in the mean distance between cuticle layer edges along the hair shaft and the hair surface roughness. Hair on the scalp, forearm, upper arm and upper leg had an almost round shape, whereas hair of the lower leg, intimate area and axilla had more elliptical shape. Hairs on the arm showed the highest luminance values and no visible medulla. The darkest hairs were in the axilla and intimate area containing the highest level of visible medulla in hair shafts. CONCLUSION To our knowledge, this is the first systematic study comparing terminal hair properties in all cosmetically relevant body regions in Caucasian women.
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Affiliation(s)
- D Schweiger
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
| | - A Hoff
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
| | - S Scheede
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
| | - F Fischer
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
| | - J Tilsner
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
| | - J Lüttke
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
| | - Y Neumann
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
| | - R Hagens
- Research & Development, Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany
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Van Neste DJJ, Rushton DH. Gender differences in scalp hair growth rates are maintained but reduced in pattern hair loss compared to controls. Skin Res Technol 2015; 22:363-9. [DOI: 10.1111/srt.12274] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2015] [Indexed: 11/28/2022]
Affiliation(s)
| | - D. H. Rushton
- School of Pharmacy & Biomedical Sciences; University of Portsmouth; Portsmouth UK
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Mirmirani P. Age-related hair changes in men: Mechanisms and management of alopecia and graying. Maturitas 2015; 80:58-62. [DOI: 10.1016/j.maturitas.2014.10.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 10/17/2014] [Indexed: 10/24/2022]
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Ishino A, Takahashi T, Suzuki J, Nakazawa Y, Iwabuchi T, Tajima M. Contribution of hair density and hair diameter to the appearance and progression of androgenetic alopecia in Japanese men. Br J Dermatol 2014; 171:1052-9. [DOI: 10.1111/bjd.13230] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A. Ishino
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki, Yokohama Kanagawa 224‐8558 Japan
| | - T. Takahashi
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki, Yokohama Kanagawa 224‐8558 Japan
| | - J. Suzuki
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki, Yokohama Kanagawa 224‐8558 Japan
| | - Y. Nakazawa
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki, Yokohama Kanagawa 224‐8558 Japan
| | - T. Iwabuchi
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki, Yokohama Kanagawa 224‐8558 Japan
| | - M. Tajima
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki, Yokohama Kanagawa 224‐8558 Japan
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Liu C, Yang J, Qu L, Gu M, Liu Y, Gao J, Collaudin C, Loussouarn G. Changes in Chinese hair growth along a full year. Int J Cosmet Sci 2014; 36:531-6. [DOI: 10.1111/ics.12151] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 06/15/2014] [Indexed: 11/27/2022]
Affiliation(s)
- C. Liu
- L'Oréal R & I; Jinyu Rd No. 550 Shanghai 201206 China
| | - J. Yang
- L'Oréal R & I; Jinyu Rd No. 550 Shanghai 201206 China
| | - L. Qu
- L'Oréal R & I; Jinyu Rd No. 550 Shanghai 201206 China
| | - M. Gu
- L'Oréal R & I; Jinyu Rd No. 550 Shanghai 201206 China
| | - Y. Liu
- L'Oréal R & I; Jinyu Rd No. 550 Shanghai 201206 China
| | - J. Gao
- L'Oréal R & I; Jinyu Rd No. 550 Shanghai 201206 China
| | - C. Collaudin
- L'Oréal R & I; 20120611-13 rue Dora Maar Saint-Ouen 93400 France
| | - G. Loussouarn
- L'Oréal R & I; 20120611-13 rue Dora Maar Saint-Ouen 93400 France
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Kim S, Lee S, Choi M, Joo K, Kim S, Koh J, Park W. Characteristic features of ageing in Korean women’s hair and scalp. Br J Dermatol 2013; 168:1215-23. [DOI: 10.1111/bjd.12185] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Inui S, Inoue T, Itami S. Effect of hairpieces on perceived quality of life in female pattern hair loss patients: questionnaire based study. J Dermatol 2013; 40:671. [PMID: 23734854 DOI: 10.1111/1346-8138.12194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Choi GS. Hair characteristics and androgenetic alopecia in Koreans. JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2013. [DOI: 10.5124/jkma.2013.56.1.45] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Gwang Seong Choi
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
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Abstract
Hair is considered one of the most defining aspects of human appearance. Hair loss, or alopecia in women is often met with significant emotional distress and anxiety. In midlife, women may encounter various hormonal and age-related physiologic changes that can lead to alterations in hair texture and growth. The most significant hormonal alteration is the onset of menopause in which there is a cessation of ovarian estrogen production. This decrease in estrogen is known to have deleterious effects on the skin and cutaneous appendages. As our understanding of the molecular and hormonal controls on the hair follicle has grown, there has been increased interest in the various modulators of hair growth, including the potential role of estrogen. Further study of hair changes in midlife women provides an important opportunity for identification of the complex regulation of hair growth as well as identification of treatment targets that may specifically benefit women. In this review, management of hair loss in midlife women is discussed with a focus on three most commonly encountered clinical conditions: female pattern hair loss, hair shaft alterations due to hair care, and telogen effluvium.
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Affiliation(s)
- Paradi Mirmirani
- Department of Dermatology, The Permanente Medical Group, Vallejo, CA 94589, United States.
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40
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Robbins C, Mirmirani P, Messenger AG, Birch MP, Youngquist RS, Tamura M, Filloon T, Luo F, Dawson TL. What women want - quantifying the perception of hair amount: an analysis of hair diameter and density changes with age in caucasian women. Br J Dermatol 2012; 167:324-32. [PMID: 22524482 DOI: 10.1111/j.1365-2133.2012.11010.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND It has long been known that women lose satisfaction with their hair with ageing. Our data show that caucasian women perceive a decrease in hair amount in their mid 40s with a further decrease in the mid to late 50s, which leads to this dissatisfaction. Neither loss of density (hairs per cm(2) ) nor shaft diameter alone can fully account for this perception. A new metric, 'hair amount', is proposed as a quantitative metric combining the impact of both density and diameter on the perception of hair loss. OBJECTIVES Creation of a single parameter combining the contribution of diameter and density to perception of female age-related hair loss. METHODS In total, 1099 caucasian women (ages 18-66 years) with self-perceived hair loss and 315 caucasian women (ages 17-86 years) with no complaint of hair loss were evaluated. Scalp hair diameter was measured using optical fibre diameter and image analysis. Scalp hair density was measured by phototrichogram with manual or automated counting. RESULTS Parietal scalp hair diameter increased from ages 20 to 40-45 years, then decreased. Hair density was highest in the youngest group, age 20-30 years, and decreased thereafter with increasing rate. In women self-perceiving hair loss, the rate of decrease in density was significantly faster than for women with no self-perception of hair loss. The combined metric 'hair amount' was relatively constant at younger ages, increasing very slightly to age 35 years, then decreasing significantly. CONCLUSIONS Increasing hair shaft diameter offsets decreasing hair density through the mid 30s. After that, a lower rate of diameter increase combined with the decrease in density begins to significantly impact the perception of hair amount so that thinning becomes increasingly more noticeable in the mid 40s to the mid to late 50s. Quantitative determination of hair amount is a useful tool to combine the contributions of hair density and diameter to women's perception of age-related hair loss.
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van Zuuren E, Fedorowicz Z, Carter B. Evidence-based treatments for female pattern hair loss: a summary of a Cochrane systematic review. Br J Dermatol 2012; 167:995-1010. [DOI: 10.1111/j.1365-2133.2012.11166.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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van Zuuren EJ, Fedorowicz Z, Carter B, Andriolo RB, Schoones J. Interventions for female pattern hair loss. Cochrane Database Syst Rev 2012:CD007628. [PMID: 22592723 DOI: 10.1002/14651858.cd007628.pub3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Female pattern hair loss, or androgenic alopecia, is the most common type of hair loss affecting women. It is characterised by progressive shortening of the duration of the growth phase of the hair with successive hair cycles, and progressive follicular miniaturisation with conversion of terminal to vellus hair follicles (terminal hairs are thicker and longer, while vellus hairs are soft, fine, and short). The frontal hair line may or may not be preserved. Hair loss can have a serious psychological impact on people. OBJECTIVES To determine the effectiveness and safety of the available options for the treatment of female pattern hair loss in women. SEARCH METHODS We searched the following databases up to October 2011: the Cochrane Skin Group Specialised Register, CENTRAL in The Cochrane Library (2011, Issue 4), MEDLINE (from 1946), EMBASE (from 1974), PsycINFO (from 1806), AMED (from 1985), LILACS (from 1982), PubMed (from 1947), Web of Science (from 1945), and reference lists of articles. We also searched several online trials registries for ongoing trials. SELECTION CRITERIA Randomised controlled trials that assessed the effectiveness of interventions for female pattern hair loss in women. DATA COLLECTION AND ANALYSIS Two review authors independently assessed trial quality and extracted data. MAIN RESULTS Twenty two trials, comprising 2349 participants, were included. A wide range of interventions were evaluated, with 10 studies investigating the different concentrations of minoxidil. Pooled data from 4 studies indicated that a greater proportion of participants (121/488) treated with minoxidil reported a moderate increase in their hair regrowth when compared with placebo (64/476) (risk ratio (RR) = 1.86, 95% confidence interval (CI) 1.42 to 2.43). In 7 studies, there was an important increase of 13.28 in total hair count per cm(2) in the minoxidil group compared to the placebo group (95% CI 10.89 to 15.68). There was no difference in the number of adverse events in the twice daily minoxidil and placebo intervention groups, with the exception of a reported increase of adverse events (additional hair growth on areas other than the scalp) with minoxidil (5%) twice daily. Most of the other comparisons consisted of single studies. These were assessed as high risk of bias: They did not address our prespecified outcomes and provided limited evidence of either the efficacy or safety of these interventions. AUTHORS' CONCLUSIONS Although more than half of the included studies were assessed as being at high risk of bias, and the rest at unclear, there was evidence to support the effectiveness and safety of topical minoxidil in the treatment of female pattern hair loss. Further direct comparison studies of minoxidil 5% applied once a day, which could improve adherence when compared to minoxidil 2% twice daily, are still required. Consideration should also be given to conducting additional well-designed, adequately-powered randomised controlled trials investigating several of the other treatment options.
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Affiliation(s)
- Esther J van Zuuren
- Department ofDermatology, LeidenUniversityMedicalCenter, Leiden,Netherlands.
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43
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Mirmirani P. Hormonal changes in menopause: do they contribute to a ‘midlife hair crisis’ in women? Br J Dermatol 2011; 165 Suppl 3:7-11. [DOI: 10.1111/j.1365-2133.2011.10629.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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LeBeau MA, Montgomery MA, Brewer JD. The role of variations in growth rate and sample collection on interpreting results of segmental analyses of hair. Forensic Sci Int 2011; 210:110-6. [DOI: 10.1016/j.forsciint.2011.02.015] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 02/09/2011] [Accepted: 02/12/2011] [Indexed: 10/18/2022]
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45
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Jeong KH, Kim KS, Lee GJ, Choi SJ, Jeong TJ, Shin MK, Park HK, Sim WY, Lee MH. Investigation of aging effects in human hair using atomic force microscopy. Skin Res Technol 2011; 17:63-8. [PMID: 20923464 DOI: 10.1111/j.1600-0846.2010.00466.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND A thorough characterization of the morphological structure and physical properties is essential for an understanding of human hair. A number of techniques such as scanning electron microscopy, transmission electron microscopy and confocal microscopy have been used to study hair surfaces. Recently, atomic force microscopy (AFM) has emerged as an ideal method for the non-invasive examination of hair surfaces. PURPOSE To investigate the effects of aging on normal Korean hair diameter and surface features using AFM. METHODS We enrolled 60 Korean volunteers of various ages who had no hair diseases. We analyzed hair diameter, AFM images of the hair surface, cuticular descriptors and micro-scale mechanical properties for their associations with aging. RESULTS Hair diameter was found to increase for the first 20-30 years of life, after which it began to decrease. AFM images of most of the younger subjects showed typical step-like topographic properties with clear scale edges. The AFM images of most of the older subjects revealed dilapidated structures, poorly demarcated scale edges and undulated surfaces. Among the cuticular descriptors, surface roughness increased significantly with age. Force to distance analysis demonstrated a dependence on age. CONCLUSION These results suggest that aging causes changes in hair diameter and surface structure.
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Affiliation(s)
- Ki Heon Jeong
- Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Korea
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46
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Kang H, Kang TW, Lee SD, Park YM, Kim HO, Kim SY. The changing patterns of hair density and thickness in South Korean women with hair loss: clinical office-based phototrichogram analysis. Int J Dermatol 2009; 48:14-21. [DOI: 10.1111/j.1365-4632.2009.03795.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Baldness may be caused by the weight of the scalp: Gravity as a proposed mechanism for hair loss. Med Hypotheses 2008; 71:505-14. [DOI: 10.1016/j.mehy.2008.05.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2008] [Revised: 05/19/2008] [Accepted: 05/20/2008] [Indexed: 11/20/2022]
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