1
|
Li Z, Zhao C, Chen R, Li M, Wang F, Hao C, Li R, Zhang Y, Xu Y. Gut microbiota, skin microbiota, and alopecia areata: A Mendelian randomization study. Skin Res Technol 2024; 30:e13845. [PMID: 39031933 PMCID: PMC11259542 DOI: 10.1111/srt.13845] [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: 05/13/2024] [Accepted: 06/17/2024] [Indexed: 07/22/2024]
Abstract
BACKGROUND Observational studies have shown an association between skin microbiota and alopecia areata (AA), but the causal connection remains ambiguous. METHODS We obtained data on skin microbiota and AA from summary statistics of Genome-Wide Association Studies and applied statistical methods from Mendelian randomization (MR) to assess causal relationships. Additionally, we investigated whether the skin microbiota acts as a mediator in the pathway from gut microbiota to AA. RESULTS In the MR analysis of KORA FF4 and AA, the inverse-variance weighting method indicated that Corynebacterium (odds ratio [OR] = 0.82, 95% confidence interval [CI]: 0.70-0.96, p = 0.02) and asv037 (OR = 0.87, 95% CI: 0.76-0.99, p = 0.05) exerted protective effects, while Betaproteobacteria (OR = 1.21, 95% CI: 1.01-1.44, p = 0.03), asv015 (OR = 1.27, 95% CI: 1.05-1.54, p = 0.02), and Burkholderiales (OR = 1.20, 95% CI: 1.04-1.38, p = 0.01) were identified as risk factors in AA. In the MR analysis of PopGen and AA, asv001 (OR = 1.12, 95% CI: 1.01-1.24, p = 0.04), asv054 (OR = 1.13, 95% CI: 1.01-1.25, p = 0.03), and asv059 (OR = 1.14, 95% CI: 1.02-1.27, p = 0.02) were found to potentially increase the risk in AA. Furthermore, in the influence of gut microbiota on AA, the skin microbiota did not act as a mediator. CONCLUSION Our analysis suggests potential causal relationships between certain skin microbiota and AA, revealing insights into its pathogenesis and potential intervention strategies.
Collapse
Affiliation(s)
- Zishun Li
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| | - Changpu Zhao
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
- Department of Hepatobiliary and GastroenterologyHenan Provincial Hospital of Traditional Chinese medicineZhengzhouChina
| | - Renwu Chen
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| | - Meiling Li
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| | - Fei Wang
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| | - Chenyuan Hao
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| | - Rongzhi Li
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| | - Yu Zhang
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| | - Yuying Xu
- Second Clinical Medical CollegeHenan University of Traditional Chinese MedicineZhengzhouChina
| |
Collapse
|
2
|
Lousada MB, Edelkamp J, Lachnit T, Fehrholz M, Pastar I, Jimenez F, Erdmann H, Bosch TCG, Paus R. Spatial Distribution and Functional Impact of Human Scalp Hair Follicle Microbiota. J Invest Dermatol 2024; 144:1353-1367.e15. [PMID: 38070726 DOI: 10.1016/j.jid.2023.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 10/17/2023] [Accepted: 11/01/2023] [Indexed: 02/26/2024]
Abstract
Human hair follicles (HFs) constitute a unique microbiota habitat that differs substantially from the skin surface. Traditional HF sampling methods fail to eliminate skin microbiota contaminants or assess the HF microbiota incompletely, and microbiota functions in human HF physiology remain ill explored. Therefore, we used laser-capture microdissection, metagenomic shotgun sequencing, and FISH to characterize the human scalp HF microbiota in defined anatomical compartments. This revealed significant compartment-, tissue lineage-, and donor age-dependent variations in microbiota composition. Greatest abundance variations between HF compartments were observed for viruses, archaea, Staphylococcus epidermidis, Cutibacterium acnes, and Malassezia restricta, with the latter 2 being the most abundant viable HF colonizers (as tested by propidium monoazide assay) and, surprisingly, most abundant in the HF mesenchyme. Transfection of organ-cultured human scalp HFs with S. epidermidis-specific lytic bacteriophages ex vivo downregulated transcription of genes known to regulate HF growth and development, metabolism, and melanogenesis, suggesting that selected microbial products may modulate HF functions. Indeed, HF treatment with butyrate, a metabolite of S. epidermidis and other HF microbiota, delayed catagen and promoted autophagy, mitochondrial activity, and gp100 and dermcidin expression ex vivo. Thus, human HF microbiota show spatial variations in abundance and modulate the physiology of their host, which invites therapeutic targeting.
Collapse
Affiliation(s)
- Marta B Lousada
- Monasterium Laboratory, Münster, Germany; Zoological Institute, Christian Albrechts University in Kiel, Kiel, Germany
| | | | - Tim Lachnit
- Zoological Institute, Christian Albrechts University in Kiel, Kiel, Germany
| | | | - Irena Pastar
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Francisco Jimenez
- Mediteknia Skin & Hair Lab, Las Palmas de Gran Canaria, Spain; Ciencias de la Salud, Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Spain
| | | | - Thomas C G Bosch
- Zoological Institute, Christian Albrechts University in Kiel, Kiel, Germany
| | - Ralf Paus
- Monasterium Laboratory, Münster, Germany; Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA; CUTANEON, Hamburg, Germany.
| |
Collapse
|
3
|
Šutić Udović I, Hlača N, Massari LP, Brajac I, Kaštelan M, Vičić M. Deciphering the Complex Immunopathogenesis of Alopecia Areata. Int J Mol Sci 2024; 25:5652. [PMID: 38891839 PMCID: PMC11172390 DOI: 10.3390/ijms25115652] [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: 04/30/2024] [Revised: 05/15/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
Alopecia areata (AA) is an autoimmune-mediated disorder in which the proximal hair follicle (HF) attack results in non-scarring partial to total scalp or body hair loss. Despite the growing knowledge about AA, its exact cause still needs to be understood. However, immunity and genetic factors are affirmed to be critical in AA development. While the genome-wide association studies proved the innate and acquired immunity involvement, AA mouse models implicated the IFN-γ- and cytotoxic CD8+ T-cell-mediated immune response as the main drivers of disease pathogenesis. The AA hair loss is caused by T-cell-mediated inflammation in the HF area, disturbing its function and disrupting the hair growth cycle without destroying the follicle. Thus, the loss of HF immune privilege, autoimmune HF destruction mediated by cytotoxic mechanisms, and the upregulation of inflammatory pathways play a crucial role. AA is associated with concurrent systemic and autoimmune disorders such as atopic dermatitis, vitiligo, psoriasis, and thyroiditis. Likewise, the patient's quality of life (QoL) is significantly impaired by morphologic disfigurement caused by the illness. The patients experience a negative impact on psychological well-being and self-esteem and may be more likely to suffer from psychiatric comorbidities. This manuscript aims to present the latest knowledge on the pathogenesis of AA, which involves genetic, epigenetic, immunological, and environmental factors, with a particular emphasis on immunopathogenesis.
Collapse
Affiliation(s)
| | | | - Larisa Prpić Massari
- Department of Dermatovenereology, Clinical Hospital Centre Rijeka, Medical Faculty, University of Rijeka, Krešimirova 42, 51000 Rijeka, Croatia; (I.Š.U.); (N.H.); (I.B.); (M.K.); (M.V.)
| | | | | | | |
Collapse
|
4
|
Reiter O, Leshem A, Alexander-Shani R, Brandwein M, Cohen Y, Yeshurun A, Ziv M, Elinav E, Hodak E, Dodiuk-Gad RP. Bacterial Skin Dysbiosis in Darier Disease. Dermatology 2024; 240:443-452. [PMID: 38330926 PMCID: PMC11168447 DOI: 10.1159/000537714] [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] [Received: 10/20/2022] [Accepted: 02/05/2024] [Indexed: 02/10/2024] Open
Abstract
INTRODUCTION Darier disease is a rare inherited disease with dominant skin manifestations including keratotic papules and plaques on sebaceous and flexural areas. Secondary infection of skin lesions is common, and Staphylococcus aureus commonly colonizes these lesions. The aim of the study was to characterize the bacterial microbiome of cutaneous Darier lesions compared to normal-looking skin and disease severity. METHODS All patients with a history of Darier followed up at Emek Medical Center were invited to participate in the study. Patients that did not use antibiotics in the past month and signed informed consent had four skin sites sampled with swabs: scalp, chest, axilla, and palm. All samples were analyzed for bacterial microbiome using 16S rDNA sequencing. RESULTS Two hundred and eighty microbiome samples obtained from lesional and non-lesional skin of the scalp, chest, axilla, and palm of 42 Darier patients were included in the analysis. The most abundant bacterial genera across all skin sites were Propionibacterium, Corynebacterium, Paracoccus, Micrococcus, and Anaerococcus. Scalp and chest lesions featured a distinct microbiome configuration that was mainly driven by an overabundance of Staphylococci species. Patients with more severe disease exhibited microbiome alterations in the chest, axilla, and palm compared with patients with only mild disease, driven by Peptoniphilus and Moryella genera in scalp and palmar lesions, respectively. CONCLUSION Staphylococci were significantly associated with Darier lesions and drove Darier-associated dysbiosis. Severity of the disease was associated with two other bacterial genera. Whether these associations also hold a causative role and may serve as a therapeutic target remains to be determined and requires further investigation.
Collapse
Affiliation(s)
- Ofer Reiter
- Division of Dermatology, Rabin Medical Center, Petah Tikvah, Israel
- School of Medicine, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Avner Leshem
- School of Medicine, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
- Department of Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | | | | | - Yotam Cohen
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Algit Yeshurun
- Department of Dermatology, Emek Medical Center, Afula, Israel
| | - Michael Ziv
- Department of Dermatology, Emek Medical Center, Afula, Israel
- Bruce and Ruth Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Eran Elinav
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
- Microbiome and Cancer Division, DKFZ, Heidelberg, Germany
| | - Emmilia Hodak
- Division of Dermatology, Rabin Medical Center, Petah Tikvah, Israel
- School of Medicine, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, Petah Tikva, Israel
| | - Roni P. Dodiuk-Gad
- Department of Dermatology, Emek Medical Center, Afula, Israel
- Bruce and Ruth Rappaport Faculty of Medicine, Technion, Haifa, Israel
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
5
|
Rinaldi F, Trink A, Mondadori G, Giuliani G, Pinto D. The Menopausal Transition: Is the Hair Follicle "Going through Menopause"? Biomedicines 2023; 11:3041. [PMID: 38002043 PMCID: PMC10669803 DOI: 10.3390/biomedicines11113041] [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: 10/07/2023] [Revised: 11/02/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
This article explores the link between menopause and changes in the hair follicle (HF) lifecycle, focusing on hormonal and metabolic dynamics. During menopause, hormonal fluctuations and aging can impact the HF, leading to phenomena such as thinning, loss of volume, and changes in hair texture. These changes are primarily attributed to a decrease in estrogen levels. However, not all women experience significant hair changes during menopause, and the extent of transformations can vary considerably from person to person, influenced by genetic factors, stress, diet, and other elements. Furthermore, menopause mirrors the aging process, affecting metabolism and blood flow to the HFs, influencing the availability of vital nutrients. The article also discusses the key role of energy metabolism in the HF lifecycle and the effect of hormones, particularly estrogens, on metabolic efficiency. The concept of a possible "menopause" clinically independent of menopause is introduced, related to changes in HF metabolism, emphasizing the importance of individual factors such as estrogen receptor responses, genetics, and last but not least, the microbiota in determining these dynamics.
Collapse
Affiliation(s)
| | | | | | | | - Daniela Pinto
- HMAP, Human Microbiome Advanced Project, 20129 Milan, Italy; (F.R.); (A.T.); (G.M.); (G.G.)
| |
Collapse
|
6
|
Passeron T, King B, Seneschal J, Steinhoff M, Jabbari A, Ohyama M, Tobin DJ, Randhawa S, Winkler A, Telliez JB, Martin D, Lejeune A. Inhibition of T-cell activity in alopecia areata: recent developments and new directions. Front Immunol 2023; 14:1243556. [PMID: 38022501 PMCID: PMC10657858 DOI: 10.3389/fimmu.2023.1243556] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 10/05/2023] [Indexed: 12/01/2023] Open
Abstract
Alopecia areata (AA) is an autoimmune disease that has a complex underlying immunopathogenesis characterized by nonscarring hair loss ranging from small bald patches to complete loss of scalp, face, and/or body hair. Although the etiopathogenesis of AA has not yet been fully characterized, immune privilege collapse at the hair follicle (HF) followed by T-cell receptor recognition of exposed HF autoantigens by autoreactive cytotoxic CD8+ T cells is now understood to play a central role. Few treatment options are available, with the Janus kinase (JAK) 1/2 inhibitor baricitinib (2022) and the selective JAK3/tyrosine kinase expressed in hepatocellular carcinoma (TEC) inhibitor ritlecitinib (2023) being the only US Food and Drug Administration-approved systemic medications thus far for severe AA. Several other treatments are used off-label with limited efficacy and/or suboptimal safety and tolerability. With an increased understanding of the T-cell-mediated autoimmune and inflammatory pathogenesis of AA, additional therapeutic pathways beyond JAK inhibition are currently under investigation for the development of AA therapies. This narrative review presents a detailed overview about the role of T cells and T-cell-signaling pathways in the pathogenesis of AA, with a focus on those pathways targeted by drugs in clinical development for the treatment of AA. A detailed summary of new drugs targeting these pathways with expert commentary on future directions for AA drug development and the importance of targeting multiple T-cell-signaling pathways is also provided in this review.
Collapse
Affiliation(s)
- Thierry Passeron
- University Côte d’Azur, Centre Hospitalier Universitaire Nice, Department of Dermatology, Nice, France
- University Côte d’Azur, INSERM, U1065, C3M, Nice, France
| | - Brett King
- Department of Dermatology, Yale University School of Medicine, New Haven, CT, United States
| | - Julien Seneschal
- Department of Dermatology and Paediatric Dermatology, National Reference Centre for Rare Skin Diseases, Saint-André Hospital, University of Bordeaux, Bordeaux, France
- Bordeaux University, Centre national de la recherche scientifique (CNRS), ImmunoConcept, UMR5164, Bordeaux, France
| | - Martin Steinhoff
- Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Department of Dermatology and Venereology, Weill Cornell Medicine-Qatar, Doha, Qatar
- College of Medicine, Qatar University, Doha, Qatar
- Department of Dermatology, Weill Cornell Medicine, New York, NY, United States
- College of Health and Life Sciences, Hamad Bin Khalifa University-Qatar, Doha, Qatar
| | - Ali Jabbari
- Department of Dermatology, University of Iowa, Iowa City, IA, United States
- Iowa City VA Medical Center, Iowa City, IA, United States
| | - Manabu Ohyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Desmond J. Tobin
- Charles Institute of Dermatology, UCD School of Medicine, University College Dublin, Dublin, Ireland
| | | | | | | | | | | |
Collapse
|
7
|
Yamada A, Watanabe K, Nishi Y, Oshiro M, Katakura Y, Sakai K, Tashiro Y. Scalp bacterial species influence SIRT1 and TERT expression in keratinocytes. Biosci Biotechnol Biochem 2023; 87:1364-1372. [PMID: 37673677 DOI: 10.1093/bbb/zbad122] [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: 05/08/2023] [Accepted: 08/16/2023] [Indexed: 09/08/2023]
Abstract
Scalp bacteria on the human scalp and scalp hair comprise distinct community structures for sites and individuals. To evaluate their effect on human keratinocyte cellular activity, including that of the hair follicular keratinocytes, the expression of several longevity genes was examined using HaCaT cells. A screening system that uses enhanced green fluorescent protein (EGFP) fluorescence was established to identify scalp bacteria that enhance silent mating type information regulation 2 homolog-1 (SIRT1) promoter activity in transformed HaCaT cells (SIRT1p-EGFP). The results of quantitative polymerase chain reaction revealed that several predominant scalp bacteria enhanced (Cutibacterium acnes and Pseudomonas lini) and repressed (Staphylococcus epidermidis) the expressions of SIRT1 and telomerase reverse transcriptase (TERT) genes in HaCaT cells. These results suggest that the predominant scalp bacteria are related to the health of the scalp and hair, including repair of the damaged scalp and hair growth, by regulating gene expression in keratinocytes.
Collapse
Affiliation(s)
- Azusa Yamada
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Kota Watanabe
- Laboratory of Fermentation Microbiology, Department of Fermentation Science, Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Yuri Nishi
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Mugihito Oshiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Yoshinori Katakura
- Laboratory of Cellular Regulation Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Japan
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
- Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
- Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| |
Collapse
|
8
|
Carrington AE, Maloh J, Nong Y, Agbai ON, Bodemer AA, Sivamani RK. The Gut and Skin Microbiome in Alopecia: Associations and Interventions. THE JOURNAL OF CLINICAL AND AESTHETIC DERMATOLOGY 2023; 16:59-64. [PMID: 37915336 PMCID: PMC10617895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Objective This review examines the current literature on the gut-skin connection in alopecia and summarizes interventions that impact hair growth by modulation of the gut or skin microbiome. Methods PubMed searches were done to assess studies of the gut and skin microbiome and forms of alopecia including, alopecia areata (AA), androgenic alopecia (AGA), alopecia universalis (AU), central centrifugal cicatricial alopecia (CCCA) and lichen planopilaris (LPP). Filters were applied for human and animal studies. Articles not translated to English and studies assessing supplemental therapies on alopecia were excluded. Results There is evidence that scalp, hair follicle, and gut microbiome alterations are associated with various types of alopecia. There is potential in the use of interventions targeting microbiome dysbiosis, including fecal transplants and probiotics. Limitations This field of study still requires more high-quality research and studies with larger participant populations. Conclusion Dysbiosis on the scalp, within the hair follicle and the gut seem to have a role in the pathophysiology of various forms of alopecia. There is evidence that interventions targeting dysbiosis may have potential in the treatment and management of hair loss. Further studies are needed to establish a direct connection and to clarify specific effects of these interventions.
Collapse
Affiliation(s)
- Alexis E Carrington
- Dr. Carrington is with the Department of Dermatology at George Washington School of Medicine and Health Sciences in Washington, DC
| | - Jessica Maloh
- Dr. Nong and Drs. Maloh and Sivamani are with Integrative Skin Science and Research in Sacramento, California
| | - Yvonne Nong
- Dr. Nong and Drs. Maloh and Sivamani are with Integrative Skin Science and Research in Sacramento, California
- Dr. Nong and Drs. Agbai and Sivamani are with the Department of Dermatology at the University of California-Davis in Sacramento, California
- Additionally, Dr. Nong is with SUNY Downstate Medical Center in Brooklyn, New York
| | - Oma N Agbai
- Dr. Nong and Drs. Agbai and Sivamani are with the Department of Dermatology at the University of California-Davis in Sacramento, California
| | - Apple A Bodemer
- Dr. Bodemer is with the Department of Dermatology at University of Wisconsin's School of Medicine and Public Health in Madison, Wisconsin
| | - Raja K Sivamani
- Dr. Nong and Drs. Maloh and Sivamani are with Integrative Skin Science and Research in Sacramento, California
- Dr. Nong and Drs. Agbai and Sivamani are with the Department of Dermatology at the University of California-Davis in Sacramento, California
- Additionally, Dr. Sivamani is with the College of Medicine at California Northstate University in Sacramento, California and Pacific Skin Institute in Sacramento, California
| |
Collapse
|
9
|
Tsai WH, Fang YT, Huang TY, Chiang YJ, Lin CG, Chang WW. Heat-killed Lacticaseibacillus paracasei GMNL-653 ameliorates human scalp health by regulating scalp microbiome. BMC Microbiol 2023; 23:121. [PMID: 37120517 PMCID: PMC10148562 DOI: 10.1186/s12866-023-02870-5] [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: 12/08/2022] [Accepted: 04/24/2023] [Indexed: 05/01/2023] Open
Abstract
BACKGROUND The equilibrium of the scalp microbiome is important for maintaining healthy scalp conditions, including sebum secretion, dandruff, and hair growth. Many different strategies to improve scalp health have been reported; however, the effect of postbiotics, such as heat-killed probiotics, on scalp health remains unclear. We examined the beneficial effects of heat-killed probiotics consisting of Lacticaseibacillus paracasei, GMNL-653, on scalp health. RESULTS Heat-killed GMNL-653 could co-aggregate with scalp commensal fungi, Malassezia furfur, in vitro, and the GMNL-653-derived lipoteichoic acid inhibited the biofilm formation of M. furfur on Hs68 fibroblast cells. The mRNA of hair follicle growth factors, including insulin-like growth factor-1 receptor (IGF-1R), vascular endothelial growth factor, IGF-1, and keratinocyte growth factor was up-regulated in skin-related human cell lines Hs68 and HaCaT after treatment with heat-killed GMNL-653. For clinical observations, we recruited 22 volunteer participants to use the shampoo containing the heat-killed GMNL-653 for 5 months and subsequently measured their scalp conditions, including sebum secretion, dandruff formation, and hair growth. We applied polymerase chain reaction (PCR) to detect the scalp microbiota of M. restricta, M. globosa, Cutibacterium acnes, and Staphylococcus epidermidis. A decrease in dandruff and oil secretion and an increase in hair growth in the human scalp were observed after the use of heat-killed GMNL-653-containing shampoo. The increased abundance of M. globosa and the decreased abundance of M. restricta and C. acnes were also observed. We further found that accumulated L. paracasei abundance was positively correlated with M. globosa abundance and negatively correlated with C. acnes abundance. S. epidermidis and C. acnes abundance was negatively correlated with M. globosa abundance and positively correlated with M. restricta. Meanwhile, M. globosa and M. restricta abundances were negatively associated with each other. C. acnes and S. epidermidis abundances were statistically positively correlated with sebum secretion and dandruff, respectively, in our shampoo clinical trial. CONCLUSION Our study provides a new strategy for human scalp health care using the heat-killed probiotics GMNL-653-containing shampoo. The mechanism may be correlated with the microbiota shift.
Collapse
Affiliation(s)
- Wen-Hua Tsai
- Research and Development Department, GenMont Biotech Incorporation, Tainan, Taiwan
| | - Yi-Ting Fang
- Research and Development Department, GenMont Biotech Incorporation, Tainan, Taiwan
| | - Tsuei-Yin Huang
- Research and Development Department, GenMont Biotech Incorporation, Tainan, Taiwan
| | - Ying-Ju Chiang
- Research and Development Department, GenMont Biotech Incorporation, Tainan, Taiwan
| | - Ching-Gong Lin
- Bachelor Program in Cosmeceutical and Biotech Industry, Department of Cosmetic Science, Chia Nan University of Pharmacy & Science, Tainan, Taiwan
| | - Wen-Wei Chang
- Department of Biomedical Sciences, Chung Shan Medical University, No. 110, Section 1, Chien-Kuo N. Rd, Taichung City, 402306, Taiwan.
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan.
| |
Collapse
|
10
|
Lousada MB, Edelkamp J, Lachnit T, Fehrholz M, Jimenez F, Paus R. Laser capture microdissection as a method for investigating the human hair follicle microbiome reveals region-specific differences in the bacteriome profile. BMC Res Notes 2023; 16:29. [PMID: 36879274 PMCID: PMC9987047 DOI: 10.1186/s13104-023-06302-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 02/20/2023] [Indexed: 03/08/2023] Open
Abstract
OBJECTIVE Human hair follicles (HFs) are populated by a rich and diverse microbiome, traditionally evaluated by methods that inadvertently sample the skin microbiome and/or miss microbiota located in deeper HF regions. Thereby, these methods capture the human HF microbiome in a skewed and incomplete manner. This pilot study aimed to use laser-capture microdissection of human scalp HFs, coupled with 16S rRNA gene sequencing to sample the HF microbiome and overcome these methodological limitations. RESULTS HFs were laser-capture microdissected (LCM) into three anatomically distinct regions. All main known core HF bacterial colonisers, including Cutibacterium, Corynebacterium and Staphylococcus, were identified, in all three HF regions. Interestingly, region-specific variations in α-diversity and microbial abundance of the core microbiome genera and Reyranella were identified, suggestive of variations in microbiologically relevant microenvironment characteristics. This pilot study therefore shows that LCM-coupled with metagenomics is a powerful tool for analysing the microbiome of defined biological niches. Refining and complementing this method with broader metagenomic techniques will facilitate the mapping of dysbiotic events associated with HF diseases and targeted therapeutic interventions.
Collapse
Affiliation(s)
- Marta B Lousada
- Monasterium Laboratory, Skin&Hair Research, Muenster, Germany. .,Zoological Institute, Christian-Albrechts University Kiel, Kiel, Germany.
| | - J Edelkamp
- Monasterium Laboratory, Skin&Hair Research, Muenster, Germany
| | - T Lachnit
- Zoological Institute, Christian-Albrechts University Kiel, Kiel, Germany
| | - M Fehrholz
- Monasterium Laboratory, Skin&Hair Research, Muenster, Germany
| | - F Jimenez
- Mediteknia Skin & Hair Lab, Las Palmas de Gran Canaria, Spain.,Medical Pathology Group, IUIBS, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain
| | - R Paus
- Monasterium Laboratory, Skin&Hair Research, Muenster, Germany.,Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,CUTANEON Skin & Hair Innovations, Hamburg, Germany
| |
Collapse
|
11
|
Malhotra K, Madke B. An Updated Review on Current Treatment of Alopecia Areata and Newer Therapeutic Options. Int J Trichology 2023; 15:3-12. [PMID: 37305188 PMCID: PMC10251289 DOI: 10.4103/ijt.ijt_28_21] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/14/2022] [Accepted: 06/14/2022] [Indexed: 06/13/2023] Open
Abstract
Alopecia areata (AA) is a dermatological disease that causes nonscarring hair loss. It can occur at any age and has an unpredictable and variable evolution in individuals. The aim of this review is to provide an update on the novel therapies currently being used, as well as upcoming therapeutic options in the treatment of AA.
Collapse
Affiliation(s)
- Karan Malhotra
- Department of Dermatology, Venereology and Leprosy, Desun Hospital, Kolkata, West Bengal, India
| | - Bhushan Madke
- Department of Dermatology, Venereology and Leprosy, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education & Research (DMIHER) (Deemed to be University), Wardha, Maharashtra, India
| |
Collapse
|
12
|
Jung DR, Yoo HY, Kim MJ, Singh V, Park SH, Jeong M, Park BJ, Shin JH. Comparative analysis of scalp and gut microbiome in androgenetic alopecia: A Korean cross-sectional study. Front Microbiol 2022; 13:1076242. [PMID: 36578576 PMCID: PMC9791053 DOI: 10.3389/fmicb.2022.1076242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/21/2022] [Indexed: 12/14/2022] Open
Abstract
Androgenetic alopecia (AGA) is a non-scarring and progressive form of hair loss occurring in both men and women. Although genetic predisposition and sex steroid hormones are the main causes, many factors remain unknown, and various extrinsic factors can negatively affect the lifespan of hair. We investigated skin-gut axis microorganisms as potential exogenous factors causing AGA, through comparative analyses of the scalp and gut microbiome in individuals with and without AGA in a Korean cohort. Using 16S rRNA gene sequencing, we characterized the scalp and gut microbiomes of 141 individuals divided into groups by sex and presence of AGA. Alpha diversity indices in the scalp microbiome were generally higher in individuals with AGA than in healthy controls. These indices showed a strong negative correlation with scalp-inhabitant bacteria (Cutibacterium and Staphylococcus), indicating that the appearance of non-inhabitant bacteria increases as hair loss progresses. No significant differences in diversity were observed between the gut microbiomes. However, bacterial functional differences, such as bile acid synthesis and bacterial invasion of epithelial cells, which are related to intestinal homeostasis, were observed. The networks of the scalp and gut microbiome were more complex and denser with higher values of the network topology statistic coefficient values (i.e., transitivity, density, and degree centrality) and more unique associations in individuals with AGA than in healthy controls. Our findings reveal a link between skin-gut microorganisms and AGA, indicating the former's potential involvement in the latter's development. Additionally, these results provide evidence for the development of cosmetics and therapeutics using microorganisms and metabolites involved in AGA.
Collapse
Affiliation(s)
- Da-Ryung Jung
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Hye-Young Yoo
- Skin and Natural Products Lab, Kolmar Korea Co., Ltd., Seoul, South Korea
| | - Min-Ji Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Vineet Singh
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Sung-Ha Park
- Skin and Natural Products Lab, Kolmar Korea Co., Ltd., Seoul, South Korea
| | - Minsoo Jeong
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Byoung-Jun Park
- Skin and Natural Products Lab, Kolmar Korea Co., Ltd., Seoul, South Korea,*Correspondence: Byoung-Jun Park,
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea,Department of Integrative Biotechnology, Kyungpook National University, Daegu, South Korea,NGS Core Facility, Kyungpook National University, Daegu, South Korea,Jae-Ho Shin,
| |
Collapse
|
13
|
Sánchez-Pellicer P, Navarro-Moratalla L, Núñez-Delegido E, Agüera-Santos J, Navarro-López V. How Our Microbiome Influences the Pathogenesis of Alopecia Areata. Genes (Basel) 2022; 13:genes13101860. [PMID: 36292745 PMCID: PMC9601531 DOI: 10.3390/genes13101860] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/11/2022] [Accepted: 10/11/2022] [Indexed: 11/04/2022] Open
Abstract
Alopecia areata is a multifactorial autoimmune-based disease with a complex pathogenesis. As in all autoimmune diseases, genetic predisposition is key. The collapse of the immune privilege of the hair follicle leading to scalp loss is a major pathogenic event in alopecia areata. The microbiota considered a bacterial ecosystem located in a specific area of the human body could somehow influence the pathogenesis of alopecia areata, as it occurs in other autoimmune diseases. Moreover, the Next Generation Sequencing of the 16S rRNA bacterial gene and the metagenomic methodology have provided an excellent characterization of the microbiota. The aim of this narrative review is to examine the published literature on the cutaneous and intestinal microbiota in alopecia areata to be able to establish a pathogenic link. In this review, we summarize the influence of the microbiota on the development of alopecia areata. We first introduce the general pathogenic mechanisms that cause alopecia areata to understand the influence that the microbiota may exert and then we summarize the studies that have been carried out on what type of gut and skin microbiota is found in patients with this disease.
Collapse
Affiliation(s)
- Pedro Sánchez-Pellicer
- MiBioPath Research Group, Department of Clinical Medicine, Health Sciences Faculty, Catholic University of Murcia, Campus de los Jerónimos 135, 30107 Murcia, Spain
| | - Laura Navarro-Moratalla
- MiBioPath Research Group, Department of Clinical Medicine, Health Sciences Faculty, Catholic University of Murcia, Campus de los Jerónimos 135, 30107 Murcia, Spain
| | - Eva Núñez-Delegido
- MiBioPath Research Group, Department of Clinical Medicine, Health Sciences Faculty, Catholic University of Murcia, Campus de los Jerónimos 135, 30107 Murcia, Spain
| | - Juan Agüera-Santos
- MiBioPath Research Group, Department of Clinical Medicine, Health Sciences Faculty, Catholic University of Murcia, Campus de los Jerónimos 135, 30107 Murcia, Spain
| | - Vicente Navarro-López
- MiBioPath Research Group, Department of Clinical Medicine, Health Sciences Faculty, Catholic University of Murcia, Campus de los Jerónimos 135, 30107 Murcia, Spain
- Infectious Diseases Unit, University Hospital of Vinalopó-Fisabio, Carrer Tonico Sansano Mora 14, 03293 Elche, Spain
- Correspondence:
| |
Collapse
|
14
|
The First Evidence of Bacterial Foci in the Hair Part and Dermal Papilla of Scalp Hair Follicles: A Pilot Comparative Study in Alopecia Areata. Int J Mol Sci 2022; 23:ijms231911956. [PMID: 36233254 PMCID: PMC9570265 DOI: 10.3390/ijms231911956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/29/2022] [Accepted: 10/06/2022] [Indexed: 11/27/2022] Open
Abstract
The role of the microbiome in hair follicle (HF) growth represents a growing field of research. Here, we studied the bacterial population in the scalp hair follicles of subjects with alopecia areata (AA). Two Healthy and two AA subjects, respectively (20−60 years old), were enrolled and studied regarding the microbial community in the subepidermal scalp compartments by means of a 4-mm biopsy punch. Samples were examined by 16S sequencing, histochemical staining (Gram’s method), and transmission electron microscopy (TEM). Bacterial foci were observed in the AA subjects’ follicles with both the two adopted complementary approaches (electron microscopy and Gram staining). Significant (p < 0.05) differences were also found in the three-layer biopsy samples (p < 0.05) regarding the bacterial population. In particular, in the deep epidermis and dermis levels, a significant (p < 0.05) lower abundance of Firmicutes and a higher abundance of Proteobacteria were found in AA samples compared to the healthy control. Firmicutes also showed a significant (p < 0.05) lower abundance in hypodermis in AA subjects. In addition, Enterobacteriaceae and the genera Streptococcus, Gemella, Porphyromonas, and Granulicatella were relatively more abundant in AA groups at the deep epidermis level. The Staphylococcus and Flavobacterium genera were significantly less abundant in AA samples than in controls in all three-layer biopsy samples (p < 0.05). In contrast, Veillonella and Neisseriaceae were relatively more abundant in the healthy control group compared to the AA sample. Therefore, higher alpha diversity was observed in all three-layer biopsy samples of AA patients compared to the control. In conclusion, our data suggest that tAA could be defined as a “hair disease associated with dysregulated microbiome-immunity axis of hair follicles”.
Collapse
|
15
|
Yilmaz DN, Onluturk Aydogan O, Kori M, Aydin B, Rahman MR, Moni MA, Turanli B. Prospects of integrated multi-omics-driven biomarkers for efficient hair loss therapy from systems biology perspective. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
16
|
Pinto D, Calabrese FM, De Angelis M, Celano G, Giuliani G, Rinaldi F. Lichen Planopilaris: The first biopsy layer microbiota inspection. PLoS One 2022; 17:e0269933. [PMID: 35849580 PMCID: PMC9292073 DOI: 10.1371/journal.pone.0269933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 06/01/2022] [Indexed: 11/18/2022] Open
Abstract
Lichen Planopilaris (LPP) is a lymphatic disease affecting the scalp that is characterized by a chronic and destructive inflammation process, named as ‘cicatricial alopecia’ in which the hair follicles are targeted and may involve predominantly lymphocytes or neutrophils. Scalp and biopsy layers have never been used to investigate microbial community composition and its relative taxa abundances in LPP. We sought to examine the significant taxa of this chronic relapsing inflammatory skin disease, together with inspect the existing connections with metabolic pathways featuring this microbial community. We used a multilevel analysis based on 16S rRNA marker sequencing in order to detect OTU abundances in pathologic/healthy samples, real time PCR for measuring the levels of IL-23 interleukin expression and urinary metabolomics to find out volatile organic metabolites (VOMs). By using a linear regression model, we described peculiar taxa that significantly differentiated LPP and healthy samples. We inspected taxa abundances and interleukin mRNA levels and the Microbacteriaceae family resulted negatively correlated with the IL-23 expression. Moreover, starting from 16S taxa abundances, we predicted the metabolic pathways featuring this microbial community. By inspecting microbial composition, sample richness, metabolomics profiles and the relative metabolic pathways in a cohort of LPP and healthy samples we deepened the contribution of significant taxa that are connected to inflammation maintenance and microbiota plasticity in LPP pathology.
Collapse
Affiliation(s)
- Daniela Pinto
- Human Advanced Microbiome Project-HMAP, Milan, Italy
- * E-mail: (DP); (FMC)
| | - Francesco Maria Calabrese
- Department of Soil, Plant and Food Science, “Aldo Moro” University, Bari, Bari, Italy
- * E-mail: (DP); (FMC)
| | - Maria De Angelis
- Department of Soil, Plant and Food Science, “Aldo Moro” University, Bari, Bari, Italy
| | - Giuseppe Celano
- Department of Soil, Plant and Food Science, “Aldo Moro” University, Bari, Bari, Italy
| | | | - Fabio Rinaldi
- Human Advanced Microbiome Project-HMAP, Milan, Italy
| |
Collapse
|
17
|
The impact of perceived stress on the hair follicle: Towards solving a psychoneuroendocrine and neuroimmunological puzzle. Front Neuroendocrinol 2022; 66:101008. [PMID: 35660551 DOI: 10.1016/j.yfrne.2022.101008] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/03/2022] [Accepted: 05/24/2022] [Indexed: 12/24/2022]
Abstract
While popular belief harbors little doubt that perceived stress can cause hair loss and premature graying, the scientific evidence for this is arguably much thinner. Here, we investigate whether these phenomena are real, and show that the cyclic growth and pigmentation of the hair follicle (HF) provides a tractable model system for dissecting how perceived stress modulates aspects of human physiology. Local production of stress-associated neurohormones and neurotrophins coalesces with neurotransmitters and neuropeptides released from HF-associated sensory and autonomic nerve endings, forming a complex local stress-response system that regulates perifollicular neurogenic inflammation, interacts with the HF microbiome and controls mitochondrial function. This local system integrates into the central stress response systems, allowing the study of systemic stress responses affecting organ function by quantifying stress mediator content of hair. Focusing on selected mediators in this "brain-HF axis" under stress conditions, we distill general principles of HF dysfunction induced by perceived stress.
Collapse
|
18
|
Li X, Yang F, Yan H, Shi Y, Chang X, Zhang M, Zhang Y, Zhang M. Microbiota profiling on itchy scalp with undetermined origin. Arch Microbiol 2022; 204:446. [PMID: 35778621 DOI: 10.1007/s00203-022-03077-4] [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: 03/01/2022] [Revised: 06/02/2022] [Accepted: 06/13/2022] [Indexed: 11/30/2022]
Abstract
Scalp pruritus is a common skin problem that remains therapeutic challenge. The relationships between the dysbiosis of microbiota and skin diseases have caught attention recently. However, there are few reports about microbiota on itchy scalp. This study investigated scalp microbial characteristics of subjects with mild scalp pruritus of undetermined origin and preliminarily screened physiological factors and bacteria potentially related to pruritus. The pruritus severity of 17 qualified females was evaluated by Visual Analogue Scale (VAS). Microbiota collection was done at both itchy (n = 20) and non-itchy sites (n = 27) at occiput and crown of the same subject and Illumina sequencing was performed at the V3-V4 hypervariable regions of 16S rRNA. The corresponding sebum content, hydration, pH, trans-epidermal water loss, erythema index and porphyrin numbers were also measured by skin tester. We identified 3044 amplicon sequence variants from 821 genera. The itchy and non-itchy sites had different microbiota structures (p = 0.045, by multivariate analysis of variance), while there were large inter- and intra-individual variations. Both sites had Staphylococcus, Cutibacterium and Lawsonella as predominant genera, which were not significantly related to pruritus. The use of three genera Lactobacillus, Morganella and Pseudomonas, could well distinguish non-itchy from itchy groups, whereas different composition patterns existed inside each group. Our investigation indicated that though the bacterial community structure on itchy scalp was individual specific, there was difference between itchy and non-itchy sites. The study provides new insights into microbiota profiling on itchy scalp, which will help microbiota-targeted therapeutic experiment or products design for scalp pruritus.
Collapse
Affiliation(s)
- Xuejing Li
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Fang Yang
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Haosong Yan
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yi Shi
- Henkel (China) Investment Co., Ltd, Shanghai, 200438, China
| | - Xiaowei Chang
- Henkel (China) Investment Co., Ltd, Shanghai, 200438, China
| | - Mengmeng Zhang
- Henkel (China) Investment Co., Ltd, Shanghai, 200438, China
| | - Yan Zhang
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Menghui Zhang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| |
Collapse
|
19
|
Basmanav FB, Betz RC. Translational impact of omics studies in alopecia areata: recent advances and future perspectives. Expert Rev Clin Immunol 2022; 18:845-857. [PMID: 35770930 DOI: 10.1080/1744666x.2022.2096590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Alopecia areata (AA) is a non-scarring, hair loss disorder and a common autoimmune-mediated disease with an estimated lifetime risk of about 2%. To date, the treatment of AA is mainly based on suppression or stimulation of the immune response. Genomics and transcriptomics studies generated important insights into the underlying pathophysiology, enabled discovery of molecular disease signatures, which were used in some of the recent clinical trials to monitor drug response and substantiated the consideration of new therapeutic modalities for the treatment of AA such as abatacept, dupilumab, ustekinumab and Janus Kinase (JAK) inhibitors. AREAS COVERED In this review, genomics and transcriptomics studies in AA are discussed in detail with particular emphasis on their past and prospective translational impacts. Microbiome studies are also briefly introduced. EXPERT OPINION The generation of large datasets using the new high-throughput technologies has revolutionized medical research and AA has also benefited from the wave of omics studies. However, the limitations associated with JAK inhibitors and clinical heterogeneity in AA patients underscore the necessity for continuing omics research in AA for discovery of novel therapeutic modalities and development of clinical tools for precision medicine.
Collapse
Affiliation(s)
- F Buket Basmanav
- Medical Faculty & University Hospital Bonn, Institute of Human Genetics, University of Bonn, Bonn, Germany
| | - Regina C Betz
- Medical Faculty & University Hospital Bonn, Institute of Human Genetics, University of Bonn, Bonn, Germany
| |
Collapse
|
20
|
Jadeja SD, Tobin DJ. Autoantigen Discovery in the Hair Loss Disorder, Alopecia Areata: Implication of Post-Translational Modifications. Front Immunol 2022; 13:890027. [PMID: 35720384 PMCID: PMC9205194 DOI: 10.3389/fimmu.2022.890027] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 04/21/2022] [Indexed: 12/24/2022] Open
Abstract
Alopecia areata (AA) is a chronic, multifactorial, polygenic, and heterogeneous disorder affecting growing hair follicles in susceptible individuals, which results in a non-scarring and reversible hair loss with a highly unpredictable course. Despite very considerable research effort, the nature of the precipitating factor(s) responsible for initiating AA in any given hair follicle remains unclear, due largely to significant gaps in our knowledge of the precise sequence of the etiopathogenic events in this dermatosis. However, disease-related changes in the immune-competence of the lower growing hair follicle, together with an active immune response (humoral and cellular) to hair follicle-associated antigens, are key associated phenomena. Confirmation of the hair follicle antigen(s) implicated in AA disease onset has remained stubbornly elusive. While it may be considered somewhat philosophical by some, it is also unclear whether immune-mediated hair loss in AA results from a) an ectopic (i.e., in an abnormal location) immune response to native (unmodified) self-antigens expressed by the healthy hair follicle, b) a normal immune response against modified self-antigens (or neoantigens), or c) a normal immune response against self-antigens (modified/non-modified) that were not previously visible to the immune system (because they were conformationally-hidden or sequestered) but become exposed and presentable in an MHC-I/-II molecule-restricted manner. While some candidate hair follicle antigen target(s) in AA are beginning to emerge, with a potential role for trichohyalin, it is not yet clear whether this represents the initial and immunodominant antigenic focus in AA or is simply one of an expanding repertoire of exposed hair follicle tissue damage-associated antigens that are secondary to the disease. Confirmation of autoantigen identity is essential for our understanding of AA etiopathogenesis, and consequently for developing a more informed therapeutic strategy. Major strides have been made in autoantigen discovery in other autoimmune conditions. In particular, some of these conditions may provide insights into how post-translational modifications (e.g., citrullination, deamidation, etc.) of hair follicle-restricted proteins may increase their antigenicity and so help drive the anti-hair follicle immune attack in AA.
Collapse
Affiliation(s)
- Shahnawaz D. Jadeja
- The Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin, Ireland
| | - Desmond J. Tobin
- The Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin, Ireland
- The Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| |
Collapse
|
21
|
Clinical Translation of Microbiome Research in Alopecia Areata: A New Perspective? COSMETICS 2022. [DOI: 10.3390/cosmetics9030055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The continuous research advances in the microbiome field is changing clinicians’ points of view about the involvement of the microbiome in human health and disease, including autoimmune diseases such as alopecia areata (AA). Both gut and cutaneous dysbiosis have been considered to play roles in alopecia areata. A new approach is currently possible owing also to the use of omic techniques for studying the role of the microbiome in the disease by the deep understanding of microorganisms involved in the dysbiosis as well as of the pathways involved. These findings suggest the possibility to adopt a topical approach using either cosmetics or medical devices, to modulate or control, for example, the growth of overexpressed species using specific bacteriocins or postbiotics or with pH control. This will favour at the same time the growth of beneficial bacteria which, in turn, can impact positively both the structure of the scalp ecosystem on the host’s response to internal and external offenders. This approach, together with a “systemic” one, via oral supplementation, diet, or faecal transplantation, makes a reliable translation of microbiome research in clinical practice and should be taken into consideration every time alopecia areata is considered by a clinician.
Collapse
|
22
|
Senna MM, Peterson E, Jozic I, Chéret J, Paus R. Frontiers in Lichen Planopilaris and Frontal Fibrosing Alopecia Research: Pathobiology Progress and Translational Horizons. JID INNOVATIONS 2022; 2:100113. [PMID: 35521043 PMCID: PMC9062486 DOI: 10.1016/j.xjidi.2022.100113] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/21/2022] [Accepted: 01/26/2022] [Indexed: 01/06/2023] Open
Abstract
Lichen planopilaris (LPP) and frontal fibrosing alopecia (FFA) are primary, lymphocytic cicatricial hair loss disorders. These model epithelial stem cell (SC) diseases are thought to result from a CD8+ T-cell‒dominated immune attack on the hair follicle (HF) SC niche (bulge) after the latter has lost its immune privilege (IP) for as yet unknown reasons. This induces both apoptosis and pathological epithelial‒mesenchymal transition in epithelial SCs, thus depletes the bulge, causes fibrosis, and ultimately abrogates the HFs' capacity to regenerate. In this paper, we synthesize recent progress in LPP and FFA pathobiology research, integrate our limited current understanding of the roles that genetic, hormonal, environmental, and other factors may play, and define major open questions. We propose that LPP and FFA share a common initial pathobiology, which then bifurcates into two distinct clinical phenotypes, with macrophages possibly playing a key role in phenotype determination. As particularly promising translational research avenues toward direly needed progress in the management of these disfiguring, deeply distressful cicatricial alopecia variants, we advocate to focus on the development of bulge IP and epithelial SC protectants such as, for example, topically effective, HF‒penetrating and immunoinhibitory preparations that contain tacrolimus, peroxisome proliferator-activated receptor-γ, and/or CB1 agonists.
Collapse
Key Words
- 5ARI, 5α-reductase inhibitor
- AA, alopecia areata
- AGA, androgenetic alopecia
- CRH, corticotropin-releasing hormone
- EMT, epithelial‒mesenchymal transition
- FFA, frontal fibrosing alopecia
- HF, hair follicle
- IP, immune privilege
- K, keratin
- KC, keratinocyte
- LPP, lichen planopilaris
- MAC, macrophage
- MHC, major histocompatibility complex
- PCA, primary cicatricial alopecia
- PCP, personal care product
- PPAR-γ, peroxisome proliferator–activated receptor-γ
- SC, stem cell
- SP, substance P
- eHFSC, epithelial hair follicle stem cell
- α-MSH, α-melanocyte-stimulating hormone
Collapse
Affiliation(s)
- Maryanne Makredes Senna
- Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| | - Erik Peterson
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Ivan Jozic
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Jérémy Chéret
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Ralf Paus
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA.,Monasterium Laboratory, Münster, Germany.,CUTANEON, Hamburg, Germany
| |
Collapse
|
23
|
A Potential Predictive Role of the Scalp Microbiome Profiling in Patients with Alopecia Areata: Staphylococcus caprae, Corynebacterium, and Cutibacterium Species. Microorganisms 2022; 10:microorganisms10050864. [PMID: 35630309 PMCID: PMC9148078 DOI: 10.3390/microorganisms10050864] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 02/04/2023] Open
Abstract
Little is known about the scalp bacterial composition of alopecia areata (AA) patients. The aim of this study was to investigate the differences in the scalp microbiome of AA patients according to their prognosis, in addition to healthy controls. A total of 33 AA patients and 12 healthy controls (HC) were included in this study. The microbiomes were characterized by sequencing 16S rRNA genes on the Illumina MiSeq platform. The scalp microbiome was more diverse in AA patients compared to HC, but not significantly different according to the severity of AA. Nevertheless, the higher proportion of Corynebacterium species and the lower proportion of Staphylococcus caprae among the Staphylococcus species were noticed in severe AA patients compared to HC or mild AA. The higher ratio of Cutibacterium species to S. caprae was noticed in severe AA. We highlight the potential predictive role of scalp microbiome profiling to a worse prognosis of patients with alopecia areata.
Collapse
|
24
|
Lousada MB, Lachnit T, Edelkamp J, Paus R, Bosch TCG. Hydra and the hair follicle - An unconventional comparative biology approach to exploring the human holobiont. Bioessays 2022; 44:e2100233. [PMID: 35261041 DOI: 10.1002/bies.202100233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 02/02/2022] [Accepted: 02/17/2022] [Indexed: 12/14/2022]
Abstract
The microbiome of human hair follicles (HFs) has emerged as an important player in different HF and skin pathologies, yet awaits in-depth exploration. This raises questions regarding the tightly linked interactions between host environment, nutrient dependency of host-associated microbes, microbial metabolism, microbe-microbe interactions and host immunity. The use of simple model systems facilitates addressing generally important questions and testing overarching, therapeutically relevant principles that likely transcend obvious interspecies differences. Here, we evaluate the potential of the freshwater polyp Hydra, to dissect fundamental principles of microbiome regulation by the host, that is the human HF. In particular, we focus on therapeutically targetable host-microbiome interactions, such as nutrient dependency, microbial interactions and host defence. Offering a new lens into the study of HF - microbiota interactions, we argue that general principles of how Hydra manages its microbiota can inform the development of novel, microbiome-targeting therapeutic interventions in human skin disease.
Collapse
Affiliation(s)
- Marta B Lousada
- Monasterium Laboratory Skin & Hair Research, Münster, Germany.,Zoological Institute, Christian-Albrechts, University of Kiel, Kiel, Germany
| | - Tim Lachnit
- Zoological Institute, Christian-Albrechts, University of Kiel, Kiel, Germany
| | - Janin Edelkamp
- Monasterium Laboratory Skin & Hair Research, Münster, Germany
| | - Ralf Paus
- Monasterium Laboratory Skin & Hair Research, Münster, Germany.,Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Thomas C G Bosch
- Zoological Institute, Christian-Albrechts, University of Kiel, Kiel, Germany
| |
Collapse
|
25
|
Carmona-Cruz S, Orozco-Covarrubias L, Sáez-de-Ocariz M. The Human Skin Microbiome in Selected Cutaneous Diseases. Front Cell Infect Microbiol 2022; 12:834135. [PMID: 35321316 PMCID: PMC8936186 DOI: 10.3389/fcimb.2022.834135] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/31/2022] [Indexed: 12/28/2022] Open
Abstract
The human skin harbors a wide variety of microbes that, together with their genetic information and host interactions, form the human skin microbiome. The role of the human microbiome in the development of various diseases has lately gained interest. According to several studies, changes in the cutaneous microbiota are involved in the pathophysiology of several dermatoses. A better delineation of the human microbiome and its interactions with the innate and adaptive immune systems could lead to a better understanding of these diseases, as well as the opportunity to achieve new therapeutic modalities. The present review centers on the most recent knowledge on skin microbiome and its participation in the pathogenesis of several skin disorders: atopic and seborrheic dermatitis, alopecia areata, psoriasis and acne.
Collapse
|
26
|
Monir RL, Schoch JJ. Clinical Relevance of the Microbiome in Pediatric Skin Disease: A Review. Dermatol Clin 2022; 40:117-126. [DOI: 10.1016/j.det.2021.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Exosomes Secreted from Adipose-Derived Stem Cells Are a Potential Treatment Agent for Immune-Mediated Alopecia. J Immunol Res 2022; 2022:7471246. [PMID: 35155688 PMCID: PMC8831060 DOI: 10.1155/2022/7471246] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 12/29/2021] [Accepted: 01/08/2022] [Indexed: 12/19/2022] Open
Abstract
Background Alopecia has become an exceedingly prevalent dermatological disorder. Etiologically, infection (bacterial and fungal infection), inflammation, and immune dysregulation are the main causes of immune-mediated hair loss. Treating hair loss has remained challenging as the available therapies are limited. Exosomes from adipose-derived stem cells (ADSC-Exos) have been used for treating neurodegenerative diseases and autoimmune diseases and in wound-healing treatments. However, the function and mechanism of ADSC-Exos in alopecia treatment remain unclear. This study is aimed at investigating the effects of ADSC-Exos on hair growth in vitro and in vivo for potentially treating immune-mediated alopecia and further exploring the underlying mechanism. Methods Cell proliferation, migration, and apoptosis of dermal papilla cells (DPCs) that were treated with ADSC-Exos were detected using the cell counting kit-8 (CCK-8) assay, scratch wound-healing assay, and flow cytometry assay, respectively. A C57BL/6 hair-depilated mouse model was established in vivo; then, ADSC-Exos were subcutaneously injected alone or in combined with minoxidil. The effects of ADSC-Exos on hair growth, pathological changes, and the related mechanism were investigated by HE staining, quantitative real‐time PCR (qRT-PCR), western blotting, and RNA sequencing (RNA-seq). Results ADSC-Exos significantly promoted DPC proliferation and migration while also reducing apoptosis. In addition, compared with the control group, ADSC-Exos-treated mice had better hair growth, more hair follicles (HFs) and thicker dermis. RNA-seq revealed that the miR-22 and TNF-α signaling pathways were markedly downregulated in DPCs after ADSC-Exos treatment. In addition, according to qRT-PCR and western blotting results, the Wnt/β-catenin signaling pathway was activated in the skin of ADSC-Exos-treated mice. Conclusion ADSC-Exos therapy positively affected the promotion of hair regrowth by regulating miR-22, the Wnt/β-catenin signaling pathway, and the TNF-α signaling pathway, implying that ADSC-Exos could be a promising cell-free therapeutic strategy for immune-mediated alopecia.
Collapse
|
28
|
Rinaldi F, Marotta L, Mascolo A, Amoruso A, Pane M, Giuliani G, Pinto D. Facial Acne: A Randomized, Double-Blind, Placebo-Controlled Study on the Clinical Efficacy of a Symbiotic Dietary Supplement. Dermatol Ther (Heidelb) 2022; 12:577-589. [PMID: 35061237 PMCID: PMC8850513 DOI: 10.1007/s13555-021-00664-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/03/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction Treatments other than topical and systemic antibiotics are needed to restore the dysbiosis correlated with acne onset and evolution. In this view, probiotics and botanical extracts could represent a valid adjunctive therapeutic approach. The purpose of this study was to test the efficacy of a dietary supplement containing probiotics (Bifidobacterium breve BR03 DSM 16604, Lacticaseibacillus casei LC03 DSM 27537, and Ligilactobacillus salivarius LS03 DSM 22776) and botanical extract (lupeol from Solanum melongena L. and Echinacea extract) in subjects with mild to moderate acne over an 8-week study period. Methods Monocentric, randomized, double-blind, four-arm, placebo-controlled clinical study involving 114 subjects. Results A significant (p < 0.05) effect on the number of superficial inflammatory lesions was reported over the study period in the subjects taking the study agent (group II) (−56.67%), the botanical extracts (group III) (−40.00%), and the probiotics (group IV) (−38.89%) versus placebo (−10.00%). A significant (p < 0.05) decrease in mean desquamation score, sebum secretion rate, and porphyrin mean count versus baseline was also reported, and the effect was most evident for group II. The analysis of log relative abundance after 4 and 8 weeks of treatment compared with baseline showed a significant (p < 0.01) decrease in Cutibacterium acnes and S. aureus, along with a contextually and significant (p < 0.05) increase in Staphylococcus epidermidis, especially in group II. No significant changes were reported for group I. Conclusion The results from this study suggest that the administration of the dietary supplement under study was effective, safe, and well tolerated in subjects with mild to moderate acne and could represent a promising optional complement for the treatment of inflammatory acne as well as for control of acne-prone skin.
Collapse
Affiliation(s)
- Fabio Rinaldi
- Research and Development Department, Giuliani S.p.A., Palagi, 2, 20129, Milan, MI, Italy.
| | - Laura Marotta
- Research and Development Department, Giuliani S.p.A., Palagi, 2, 20129, Milan, MI, Italy
| | - Antonio Mascolo
- Research and Development Department, Giuliani S.p.A., Palagi, 2, 20129, Milan, MI, Italy
| | | | - Marco Pane
- Probiotical Research S.r.l., Novara, Italy
| | - Giammaria Giuliani
- Research and Development Department, Giuliani S.p.A., Palagi, 2, 20129, Milan, MI, Italy
| | - Daniela Pinto
- Research and Development Department, Giuliani S.p.A., Palagi, 2, 20129, Milan, MI, Italy
| |
Collapse
|
29
|
Pereira MS, Redanz S, Kriegel MA. Skin Deep: The Role of the Microbiota in Cutaneous Autoimmunity. J Invest Dermatol 2022; 142:834-840. [PMID: 35027173 DOI: 10.1016/j.jid.2021.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 12/05/2021] [Accepted: 12/06/2021] [Indexed: 12/16/2022]
Abstract
The skin microbiota is thought to possibly contribute to the pathogenesis of skin autoimmune diseases. The gut microbiota affects systemically the development and function of the immune system, thereby potentially influencing cutaneous autoimmunity as well. In this paper, we review the role of the gut and skin microbiota in cutaneous autoimmune diseases. Besides direct inflammatory effects at the skin barrier, microbiota may contribute to the pathogenesis of skin autoimmune diseases by metabolites, recall immune cell responses, and permeation of antigens to the subepidermal space. Skin and gut barrier dysfunction may represent a common pathophysiologic process allowing microbiota or its particles to promote autoimmune diseases at barrier surfaces.
Collapse
Affiliation(s)
- Márcia S Pereira
- Department of Translational Rheumatology and Immunology, Institute of Musculoskeletal Medicine, University of Münster, Münster, Germany
| | - Sylvio Redanz
- Department of Translational Rheumatology and Immunology, Institute of Musculoskeletal Medicine, University of Münster, Münster, Germany
| | - Martin A Kriegel
- Department of Translational Rheumatology and Immunology, Institute of Musculoskeletal Medicine, University of Münster, Münster, Germany; Section of Rheumatology and Clinical Immunology, Department of Medicine, University Hospital Münster, Münster, Germany; Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA.
| |
Collapse
|
30
|
Scalp Microbiome and Sebum Composition in Japanese Male Individuals with and without Androgenetic Alopecia. Microorganisms 2021; 9:microorganisms9102132. [PMID: 34683453 PMCID: PMC8536999 DOI: 10.3390/microorganisms9102132] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/01/2021] [Accepted: 10/08/2021] [Indexed: 12/19/2022] Open
Abstract
The skin microbiome and sebum may be associated with inflammation-related diseases of the scalp. To assess the pathogenesis and progression of androgenetic alopecia (AGA), we analyzed the composition of sebum and the bacterial and fungal microbiomes of the scalps of 118 Japanese male individuals with and without AGA, then discussed their roles in the pathogenesis of AGA. Sebum triglyceride and palmitic acid contents were higher in the AGA group than in the non-AGA group. Malassezia restricta, a lipophilic fungus that consumes palmitic acid, was abundant on the scalps of patients with AGA. Cutibacterium, Corynebacterium, and Staphylococcus were the most common genera in both groups, and patients with AGA exhibited scalp dysbiosis (increased abundance of Cutibacterium and decreased abundance of Corynebacterium). Our findings suggest that both sebum and the bacterial and fungal microbiomes of the scalp may be involved in the development of AGA.
Collapse
|
31
|
Zhou C, Li X, Wang C, Zhang J. Alopecia Areata: an Update on Etiopathogenesis, Diagnosis, and Management. Clin Rev Allergy Immunol 2021; 61:403-423. [PMID: 34403083 DOI: 10.1007/s12016-021-08883-0] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2021] [Indexed: 12/11/2022]
Abstract
Alopecia areata (AA) is a common chronic tissue-specific autoimmune disease, resulting in hair loss, that affects up to 2% of the general population. The exact pathobiology of AA has still remained elusive, while the common theory is the collapse of the immune privilege of the hair follicle caused by immunological mechanism. Multiple genetic and environment factors contribute to the pathogenesis of AA. There are several clinical treatments for AA, varying from one or multiple well-defined patches to more diffuse or total hair loss of the scalp (alopecia totalis) or hair loss of the entire body (alopecia universalis). The available treatments for AA, such as corticosteroids and other immunomodulators, minoxidil, and contact immunotherapy, are of limited efficacy with a high risk of adverse effects and high recurrence rates, especially for patients with severe AA. Recent insights into the pathogenesis of AA have led to the development of new treatment strategies, such as Janus kinase (JAK) inhibitors, biologics, and several small molecular agents. In addition, modern therapies for AA, including antihistamines, platelet-rich plasma (PRP) injection, and other novel therapies have been well explored. In this review, we discussed the recent advances in the pathogenesis, diagnosis, and treatment of AA.
Collapse
Affiliation(s)
- Cheng Zhou
- Department of Dermatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, China
| | - Xiangqian Li
- Department of Dermatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, China
| | - Chen Wang
- Department of Dermatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, China
| | - Jianzhong Zhang
- Department of Dermatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, China.
| |
Collapse
|
32
|
Alopecia and the Microbiome: A Future Therapeutic Target? ACTAS DERMO-SIFILIOGRAFICAS 2021. [DOI: 10.1016/j.adengl.2021.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
33
|
Barquero-Orias D, Muñoz Moreno-Arrones O, Vañó-Galván S. Alopecia y microbioma: ¿futura diana terapéutica? ACTAS DERMO-SIFILIOGRAFICAS 2021. [DOI: 10.1016/j.ad.2020.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
|
34
|
Lousada MB, Lachnit T, Edelkamp J, Rouillé T, Ajdic D, Uchida Y, Di Nardo A, Bosch TCG, Paus R. Exploring the human hair follicle microbiome. Br J Dermatol 2021; 184:802-815. [PMID: 32762039 DOI: 10.1111/bjd.19461] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2020] [Indexed: 12/31/2022]
Abstract
Human hair follicles (HFs) carry complex microbial communities that differ from the skin surface microbiota. This likely reflects that the HF epithelium differs from the epidermal barrier in that it provides a moist, less acidic, and relatively ultraviolet light-protected environment, part of which is immune-privileged, thus facilitating microbial survival. Here we review the current understanding of the human HF microbiome and its potential physiological and pathological functions, including in folliculitis, acne vulgaris, hidradenitis suppurativa, alopecia areata and cicatricial alopecias. While reviewing the main human HF bacteria (such as Propionibacteria, Corynebacteria, Staphylococci and Streptococci), viruses, fungi and parasites as human HF microbiome constituents, we advocate a broad view of the HF as an integral part of the human holobiont. Specifically, we explore how the human HF may manage its microbiome via the regulated production of antimicrobial peptides (such as cathelicidin, psoriasin, RNAse7 and dermcidin) by HF keratinocytes, how the microbiome may impact on cytokine and chemokine release from the HF, and examine hair growth-modulatory effects of antibiotics, and ask whether the microbiome affects hair growth in turn. We highlight major open questions and potential novel approaches to the management of hair diseases by targeting the HF microbiome.
Collapse
Affiliation(s)
- M B Lousada
- Monasterium Laboratory, Münster, Germany
- Zoological Institute, Christian-Albrechts University Kiel, Kiel, Germany
| | - T Lachnit
- Zoological Institute, Christian-Albrechts University Kiel, Kiel, Germany
| | - J Edelkamp
- Monasterium Laboratory, Münster, Germany
| | - T Rouillé
- Monasterium Laboratory, Münster, Germany
| | - D Ajdic
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Y Uchida
- Monasterium Laboratory, Münster, Germany
| | - A Di Nardo
- Department of Dermatology, University of California, San Diego, CA, USA
| | - T C G Bosch
- Zoological Institute, Christian-Albrechts University Kiel, Kiel, Germany
| | - R Paus
- Monasterium Laboratory, Münster, Germany
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
- Centre for Dermatology Research, School of Biological Sciences, University of Manchester & NIHR Biomedical Research Centre, Manchester, UK
| |
Collapse
|
35
|
Luger T, Dirschka T, Eyerich K, Gollnick H, Gupta G, Lambert J, Micali G, Ochsendorf F, Ständer S, Traidl-Hoffmann C. Developments and challenges in dermatology: an update from the Interactive Derma Academy (IDeA) 2019. J Eur Acad Dermatol Venereol 2021; 34 Suppl 7:3-18. [PMID: 33315305 DOI: 10.1111/jdv.17009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 10/09/2020] [Indexed: 01/09/2023]
Abstract
The 2019 Interactive Derma Academy (IDeA) meeting was held in Lisbon, Portugal, 10-12 May, bringing together leading dermatology experts from across Europe, the Middle East and Asia. Over three days, the latest developments and challenges in relation to the pathophysiology, diagnosis, evaluation and management of dermatological conditions were presented, with a particular focus on acne, atopic dermatitis (AD) and actinic keratosis (AK). Interesting clinical case studies relating to these key topics were discussed with attendees to establish current evidence-based best practices. Presentations reviewed current treatments, potential therapeutic approaches and key considerations in the management of acne, AK and AD, and discussed the importance of the microbiome in these conditions, as well as the provision of patient education/support. It was highlighted that active treatment is not always required for AK, depending on patient preferences and clinical circumstances. In addition to presentations, two interactive workshops on the diagnosis and treatment of sexually transmitted infections/diseases (STIs/STDs) presenting to the dermatology clinic, and current and future dermocosmetics were conducted. The potential for misdiagnosis of STIs/STDs was discussed, with dermoscopy and/or reflectance confocal microscopy suggested as useful diagnostic techniques. In addition, botulinum toxin was introduced as a potential dermocosmetic, and the possibility of microbiome alteration in the treatment of dermatological conditions emphasized. Furthermore, several challenges in dermatology, including the use of lasers, the complexity of atopic dermatitis, wound care, use of biosimilars and application of non-invasive techniques in skin cancer diagnosis were reviewed. In this supplement, we provide an overview of the presentations and discussions from the fourth successful IDeA meeting, summarizing the key insights shared by dermatologists from across the globe.
Collapse
Affiliation(s)
- T Luger
- Department of Dermatology, University of Münster, Münster, Germany
| | - T Dirschka
- Centroderm Clinic, Wuppertal, Germany.,Faculty of Health, University Witten-Herdecke, Witten, Germany
| | - K Eyerich
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany.,Unit of Dermatology, Department of Medicine, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - H Gollnick
- Department of Dermatology and Venereology, Otto-von-Guericke University, Magdeburg, Germany
| | - G Gupta
- University Department of Dermatology, Edinburgh, UK
| | - J Lambert
- Department of Dermatology, Antwerp University Hospital, University of Antwerp, Antwerp, Belgium
| | - G Micali
- Dermatology Clinic, University of Catania, Catania, Italy
| | - F Ochsendorf
- Department of Dermatology, Frankfurt University Hospital, Frankfurt/Main, Germany
| | - S Ständer
- Center for Chronic Pruritus, Department of Dermatology, University Hospital Münster, Münster, Germany
| | - C Traidl-Hoffmann
- Chair and Institute of Environmental Medicine, UNIKA-T, Technical University of Munich and Helmholtz Zentrum München, Augsburg, Germany
| |
Collapse
|
36
|
Effect of commonly used cosmetic preservatives on skin resident microflora dynamics. Sci Rep 2021; 11:8695. [PMID: 33888782 PMCID: PMC8062602 DOI: 10.1038/s41598-021-88072-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/08/2021] [Indexed: 01/15/2023] Open
Abstract
Human skin is populated by various microorganisms, the so-called microbiota, such as bacteria, viruses, yeasts, fungi, and archaea. The skin microbiota is in constant contact with the surrounding environment which can alter its eubiotic state. Recently it has been also observed that the application of cosmetic products can alter the balance of the skin microbiota. This effect may be attributed to many factors including the residual activity of the preservatives on the skin. In the present work, we studied the effect of eleven preservatives commonly found in cosmetic products on Propionibacterium acnes, Staphylococcus epidermidis, and Staphylococcus aureus in vitro using 3D skin models and culture-dependent methods. Also, the effect on Histone deacetylase 3 (HDAC3) has been investigated. Among tested combinations, three resulted as the best suitable for restoring a pre-existing dysbiosis since they act moderately inhibiting C. acnes and strongly S. aureus without simultaneously inhibiting the growth of S. epidermidis. The other four combinations resulted as the best suitable for use in topical products for skin and scalp in which it is necessary to preserve the eubiosis of the microbiota. Some of the tested were also able to increase HDAC3 expression. Taking together these data highlight the role of preservatives of skin resident microflora dynamics and could provide a reference for correctly choice preservatives and dosage in cosmetic formulations to preserve or restore homeostasis of skin microbiota.
Collapse
|
37
|
Dysbiosis and Enhanced Beta-Defensin Production in Hair Follicles of Patients with Lichen Planopilaris and Frontal Fibrosing Alopecia. Biomedicines 2021; 9:biomedicines9030266. [PMID: 33800045 PMCID: PMC7999846 DOI: 10.3390/biomedicines9030266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/16/2021] [Accepted: 03/02/2021] [Indexed: 01/06/2023] Open
Abstract
Despite their distinct clinical manifestation, frontal fibrosing alopecia (FFA) and lichen planopilaris (LPP) display similar histopathologic features. Aberrant innate immune responses to endogenous or exogenous triggers have been discussed as factors that could drive inflammatory cascades and the collapse of the stem cell niche. In this exploratory study, we investigate the bacterial composition of scalp skin and plucked hair follicles (HF) of patients with FFA, LPP and alopecia areata circumscripta (AAc), as well as healthy individuals, in relation to cellular infiltrates and the expression of defense mediators. The most abundant genus in lesional and non-lesional HFs of LPP and FFA patients was Staphylococcus, while Lawsonella dominated in healthy individuals and in AAc patients. We observed statistically significant differences in the ratio of Firmicutes to Actinobacteria between healthy scalp, lesional, and non-lesional sites of FFA and LPP patients. This marked dysbiosis in FFA and LPP in compartments close to the bulge was associated with increased HβD1 and HβD2 expression along the HFs from lesional sites, while IL-17A was increased in lesional HF from AAc patients. The data encourage further studies on how exogenous factors and molecular interactions across the HF epithelium could contribute to disease onset and propagation.
Collapse
|
38
|
Constantinou A, Kanti V, Polak-Witka K, Blume-Peytavi U, Spyrou GM, Vogt A. The Potential Relevance of the Microbiome to Hair Physiology and Regeneration: The Emerging Role of Metagenomics. Biomedicines 2021; 9:biomedicines9030236. [PMID: 33652789 PMCID: PMC7996884 DOI: 10.3390/biomedicines9030236] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 12/18/2022] Open
Abstract
Human skin and hair follicles are recognized sites of microbial colonization. These microbiota help regulate host immune mechanisms via an interplay between microbes and immune cells, influencing homeostasis and inflammation. Bacteria affect immune responses by controlling the local inflammatory milieu, the breakdown of which can result in chronic inflammatory disorders. Follicular microbiome shifts described in some inflammatory cutaneous diseases suggest a link between their development or perpetuation and dysbiosis. Though the hair follicle infundibulum is an area of intense immunological interactions, bulb and bulge regions represent immune-privileged niches. Immune privilege maintenance seems essential for hair growth and regeneration, as collapse and inflammation characterize inflammatory hair disorders like alopecia areata and primary cicatricial alopecia. Current research largely focuses on immunological aberrations. However, studies suggest that external stimuli and interactions across the follicular epithelium can have profound effects on the local immune system, homeostasis, and cycling. Herein, we review hair follicle bacterial colonization, its possible effects on the underlying tissue, and links to the pathogenesis of alopecia, beyond the pure investigation of specific species abundance. As skin microbiology enters the metagenomics era, multi-dimensional approaches will enable a new level of investigations on the effects of microorganisms and metabolism on host tissue.
Collapse
Affiliation(s)
- Andria Constantinou
- Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin and Humboldt-Universitaet zu Berlin, Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charitéplatz 1, 10117 Berlin, Germany; (A.C.); (V.K.); (K.P.-W.); (U.B.-P.)
| | - Varvara Kanti
- Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin and Humboldt-Universitaet zu Berlin, Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charitéplatz 1, 10117 Berlin, Germany; (A.C.); (V.K.); (K.P.-W.); (U.B.-P.)
| | - Katarzyna Polak-Witka
- Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin and Humboldt-Universitaet zu Berlin, Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charitéplatz 1, 10117 Berlin, Germany; (A.C.); (V.K.); (K.P.-W.); (U.B.-P.)
| | - Ulrike Blume-Peytavi
- Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin and Humboldt-Universitaet zu Berlin, Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charitéplatz 1, 10117 Berlin, Germany; (A.C.); (V.K.); (K.P.-W.); (U.B.-P.)
| | - George M. Spyrou
- Bioinformatics ERA Chair, The Cyprus Institute of Neurology and Genetics, 6 Iroon Avenue, 2371 Ayios Dometios, Nicosia, Cyprus;
| | - Annika Vogt
- Charité-Universitatsmedizin Berlin, Corporate Member of Freie Universitaet Berlin and Humboldt-Universitaet zu Berlin, Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venereology and Allergy, Charitéplatz 1, 10117 Berlin, Germany; (A.C.); (V.K.); (K.P.-W.); (U.B.-P.)
- Correspondence:
| |
Collapse
|
39
|
De Pessemier B, Grine L, Debaere M, Maes A, Paetzold B, Callewaert C. Gut-Skin Axis: Current Knowledge of the Interrelationship between Microbial Dysbiosis and Skin Conditions. Microorganisms 2021; 9:353. [PMID: 33670115 PMCID: PMC7916842 DOI: 10.3390/microorganisms9020353] [Citation(s) in RCA: 190] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/25/2021] [Accepted: 02/07/2021] [Indexed: 02/06/2023] Open
Abstract
The microbiome plays an important role in a wide variety of skin disorders. Not only is the skin microbiome altered, but also surprisingly many skin diseases are accompanied by an altered gut microbiome. The microbiome is a key regulator for the immune system, as it aims to maintain homeostasis by communicating with tissues and organs in a bidirectional manner. Hence, dysbiosis in the skin and/or gut microbiome is associated with an altered immune response, promoting the development of skin diseases, such as atopic dermatitis, psoriasis, acne vulgaris, dandruff, and even skin cancer. Here, we focus on the associations between the microbiome, diet, metabolites, and immune responses in skin pathologies. This review describes an exhaustive list of common skin conditions with associated dysbiosis in the skin microbiome as well as the current body of evidence on gut microbiome dysbiosis, dietary links, and their interplay with skin conditions. An enhanced understanding of the local skin and gut microbiome including the underlying mechanisms is necessary to shed light on the microbial involvement in human skin diseases and to develop new therapeutic approaches.
Collapse
Affiliation(s)
- Britta De Pessemier
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
| | - Lynda Grine
- Department of Head & Skin, Ghent University, Corneel Heymanslaan 10, 9000 Ghent, Belgium;
| | - Melanie Debaere
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
| | - Aglaya Maes
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
| | | | - Chris Callewaert
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
| |
Collapse
|
40
|
Abstract
Alopecia areata (AA) is an autoimmune condition that affects up to 2% of the general population. Currently available treatment options for AA are of limited efficacy and can be associated with adverse effects. The advancement in understanding of the genetic and molecular mechanisms of AA has led to the development of novel treatment options, with the Janus kinase (JAK) inhibitor class of drugs at the forefront of ongoing clinical trials. Platelet-rich plasma, fecal transplants, and cytokine-targeted therapy with ustekinumab and dupilumab have also been shown to regrow hair in patients with AA in individual case reports or small studies. Several other novel therapies have preliminary data or are being tested in clinical trials.
Collapse
|
41
|
Pinto D, Trink A, Sorbellini E, Giuliani G, Rinaldi F. 'Omics' approaches for studying the microbiome in Alopecia areata. J Investig Med 2020; 68:1292-1294. [PMID: 32958525 PMCID: PMC7525785 DOI: 10.1136/jim-2020-001426] [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] [Accepted: 07/08/2020] [Indexed: 11/06/2022]
Abstract
Nowadays, the involvement of the microbiome in human health and many human diseases, including that strictly related to the scalphas been brought to the light. Indeed, more recently, authors highlighted the presence of a significant microbial shift both in nonscarring (Androgenetic alopecia and Alopecia areata) and scarring Alopecias. The advent of novel technologies together with the effort of many scientists in the microbiome field could provide in the nearest future a clearest framework about the strict relationship between human healthiness and symbiotic microorganism resident on different ecosystem of our body. In this view, the use of Omics approaches has to be considered as no longer negligible when studying the microbiome implication in human health and disease.
Collapse
Affiliation(s)
| | - Anna Trink
- Human Microbiome Advanced Project, Milan, Italy
| | | | | | | |
Collapse
|
42
|
Filaire E, Dreux A, Boutot C, Ranouille E, Berthon JY. Characteristics of healthy and androgenetic alopecia scalp microbiome: Effect of Lindera strychnifolia roots extract as a natural solution for its modulation. Int J Cosmet Sci 2020; 42:615-621. [PMID: 32803888 DOI: 10.1111/ics.12657] [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: 03/29/2020] [Revised: 06/20/2020] [Accepted: 08/10/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The human scalp harbours a vast community of microbiotal mutualists. Androgenetic alopecia (AGA), the most common form of hair loss in males, is a multifactorial condition involving genetic predisposition and hormonal changes. The role of microflora during hair loss remains to be understood. After having characterized the scalp microbiota of 12 healthy male subjects and 12 AGA male subjects (D0), the aim of this investigation was to evaluate the capacity of Lindera strychnifolia root extract (LsR) to restore a healthy bacterial and fungal scalp microflora after 83 days (D83) of treatment. MATERIAL AND METHODS The strategy used was based on high-throughput DNA sequencing targeting the encoding 16S ribosomal RNA for bacteria and Internal Transcribed Spacer 1 ribosomal DNA for fungi. RESULTS Test analysis of relative abundance comparing healthy and AGA subjects showed a significant increase of Cutibacterim acnes (P < 0.05) and Stenotrophomonas geniculata (P < 0.01) in AGA subjects. AGA scalp condition was also associated with a significant (P < 0.05) decrease of Staphylococcus epidermidis relative abundance. A lower proportion of Malassezia genus in samples corresponding to AGA scalps and an increase of other bacterial genera (Wallemia, Eurotium) were also noted. At the species level, mean relative abundance of Malassezia restricta and Malassezia globosa were significantly lower (P < 0.05) in the AGA group. Eighty-three days of treatment induced a significant decrease in the relative abundance of C. acnes (P < 0.05) and S. geniculata (P < 0.01). S. epidermidis increased significantly (P < 0.05). At the same time, LsR treatment induced a significant increase in the proportion of M. restricta and M. globosa (P < 0.05). CONCLUSION Data from sequencing profiling of the scalp microbiota strongly support a different microbial composition of scalp between control and AGA populations. Findings suggest that LsR extract may be a potential remedy for scalp microbiota re-equilibrium.
Collapse
Affiliation(s)
- E Filaire
- Greentech, Biopôle Clermont-Limagne, Saint-Beauzire, 63360, France.,UMR 1019 INRA-UcA, UNH (Human Nutrition Unity), ECREIN Team, University Clermont Auvergne, Clermont-Ferrand, 63000, France
| | - A Dreux
- Greentech, Biopôle Clermont-Limagne, Saint-Beauzire, 63360, France
| | - C Boutot
- Greentech, Biopôle Clermont-Limagne, Saint-Beauzire, 63360, France
| | - E Ranouille
- Greentech, Biopôle Clermont-Limagne, Saint-Beauzire, 63360, France
| | - J Y Berthon
- Greentech, Biopôle Clermont-Limagne, Saint-Beauzire, 63360, France
| |
Collapse
|
43
|
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.
Collapse
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
| |
Collapse
|
44
|
Rinaldi F, Trink A, Pinto D. Efficacy of Postbiotics in a PRP-Like Cosmetic Product for the Treatment of Alopecia Area Celsi: A Randomized Double-Blinded Parallel-Group Study. Dermatol Ther (Heidelb) 2020; 10:483-493. [PMID: 32279227 PMCID: PMC7211773 DOI: 10.1007/s13555-020-00369-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Indexed: 02/08/2023] Open
Abstract
INTRODUCTION Alopecia areata (AA), also known as 'area Celsi', is the second most common form of hair loss affecting the scalp. Newly proposed treatments for AA include low-level light therapy, biologics such as Janus kinase inhibitors and autologous platelet-rich plasma (PRP), which is a well-known "elixir" for hair growth. Bioactive peptides developed through biotechnological applications have been used to overcome the limitations of PRP. More recently, the involvement of microbiota in hair growth disorders, in AA in particular, has been reported, and the usefulness of microbial metabolites, i.e. postbiotics, has been suggested. METHODS This study was a randomized double-blinded parallel-group study in which 160 persons of both sexes affected by AA and aged between 18 and 60 years were enrolled. The subjects were randomly assigned to a treatment group (group 1), receiving the TR-PRP plus-Celsi cosmetic product, and a placebo group (group 2). The SALT (Severity of Alopecia Tool) score was determined in both groups at baseline and after 2 and 3 months of treatment, and the results compared between groups. RESULTS The subjects in group 1 showed a significant change from baseline in SALT score at 2 months of treatment (61.04% ± 3.45%; p < 0.0001), with a further improvement at the end of treatment (3 months) (69.56% ± 4.32%; p < 0.0001). No significant changes from baseline were reported for the subjects in group 2 (T1: 26.45% ± 3.64%; T3: 27.63% ± 7.61%). CONCLUSIONS The results of this study provide further proof of the efficacy of bioactive peptides that mimick the growth factors present in PRP in subjects affected by AA. They also add to our knowledge of the link between microbiota and hair growth disorders, emphasizing the importance of studies on the microbial community and microbial metabolites as a novel therapeutic approach.
Collapse
Affiliation(s)
- Fabio Rinaldi
- Human Advanced Microbiome Project (HMAP), Giuliani SpA, Milan, Italy.
| | - Anna Trink
- Human Advanced Microbiome Project (HMAP), Giuliani SpA, Milan, Italy
| | - Daniela Pinto
- Human Advanced Microbiome Project (HMAP), Giuliani SpA, Milan, Italy
| |
Collapse
|
45
|
Effects of Fermented Oils on Alpha-Biodiversity and Relative Abundance of Cheek Resident Skin Microbiota. COSMETICS 2020. [DOI: 10.3390/cosmetics7020034] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The skin microbiome is in a very close mutualistic relationship with skin cells, influencing their physiology and immunology and participating in many dermatological conditions. Today, there is much interest in cosmetic ingredients that may promote a healthy microbiome, especially postbiotics, mainly derived from fermented products. In the present work, we studied the effects on skin microbiota of new patented natural oils obtained by unique fermentation technology in vivo. Three fermented oils were evaluated: F-Shiunko (FS), F-Artemisia® (FA) and F-Glycyrrhiza® (FG). The active components were included as single active component or in combination (FSAG) in an emulsion system. A total of 20 healthy women were recruited, and skin microbiota from cheek were analyzed by mean of swab sampling at T0 and T1 (after 4 weeks of a one-day treatment). 16S sequencing revealed that the treatment with fermented oils improved microbiome composition and alpha-diversity. It was shown that higher biodiversity reflects in a healthier microbial ecosystem since microbial diversity decreases in the presence of a disease or due to aging. The treatment also resulted in a more “beneficial” and “younger” microbial community since a significant decrease in Proteobacteria and the increase in Staphylococcus were reported after the treatment with fermented oils.
Collapse
|
46
|
Pinto D, Calabrese FM, De Angelis M, Celano G, Giuliani G, Gobbetti M, Rinaldi F. Predictive Metagenomic Profiling, Urine Metabolomics, and Human Marker Gene Expression as an Integrated Approach to Study Alopecia Areata. Front Cell Infect Microbiol 2020; 10:146. [PMID: 32411613 PMCID: PMC7201066 DOI: 10.3389/fcimb.2020.00146] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 03/19/2020] [Indexed: 12/11/2022] Open
Abstract
Involvement of the microbiome in many different scalp conditions has been investigated over the years. Studies on the role of the scalp microbiome in specific diseases, such as those involving hair growth alterations like non-cicatricial [androgenetic alopecia (AGA), alopecia areata (AA)] and cicatricial alopecia lichen planopilaris, are of major importance. In the present work, we highlighted the differences in microbial populations inhabiting the scalp of AA subjects and a healthy sample cohort by using an integrated approach relying on metagenomic targeted 16S sequencing analysis, urine metabolomics, and human marker gene expression. Significant differences in genera abundances (p < 0.05) were found in the hypodermis and especially the dermis layer. Based on 16S sequencing data, we explored the differences in predicted KEGG pathways and identified some significant differences in predicted pathways related to the AA pathologic condition such as flagellar, assembly, bacterial chemotaxis, mineral absorption, ABC transporters, cellular antigens, glycosaminoglycan degradation, lysosome, sphingolipid metabolism, cell division, protein digestion and absorption, and energy metabolism. All predicted pathways were significantly enhanced in AA samples compared to expression in healthy samples, with the exceptions of mineral absorption, and ABC transporters. We also determined the expression of TNF-α, FAS, KCNA3, NOD-2, and SOD-2 genes and explored the relationships between human gene expression levels and microbiome composition by Pearson's correlation analysis; here, significant correlations both positive (SOD vs. Staphylococcus, Candidatus Aquiluna) and negative (FAS and SOD2 vs. Anaerococcus, Neisseria, and Acinetobacter) were highlighted. Finally, we inspected volatile organic metabolite profiles in urinary samples and detected statistically significant differences (menthol, methanethiol, dihydrodehydro-beta-ionone, 2,5-dimethylfuran, 1,2,3,4, tetrahydro-1,5,7-trimethylnapthalene) when comparing AA and healthy subject groups. This multiple comparison approach highlighted potential traits associated with AA and their relationship with the microbiota inhabiting the scalp, opening up novel therapeutic interventions in such kind of hair growth disorders mainly by means of prebiotics, probiotics, and postbiotics.
Collapse
Affiliation(s)
- Daniela Pinto
- Human Microbiome Advanced Project-HMPA, Giuliani SpA, Milan, Italy
| | | | - Maria De Angelis
- Department of Soil, Plant, and Food Sciences, University of Bari Aldo Moro, Bari, Italy
| | - Giuseppe Celano
- Department of Soil, Plant, and Food Sciences, University of Bari Aldo Moro, Bari, Italy
| | | | - Marco Gobbetti
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy
| | - Fabio Rinaldi
- Human Microbiome Advanced Project-HMPA, Giuliani SpA, Milan, Italy
| |
Collapse
|
47
|
27 TH Fondation René Touraine Annual SCIENTIFIC MEETING 2019: Skin Appendages - Developmental and Pathophysiological Aspects. Exp Dermatol 2019; 28:1353-1367. [PMID: 31854035 DOI: 10.1111/exd.14039] [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]
|