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Gil-Redondo R, Hermosa-Gelbard A, Saceda-Corralo D, Pindado-Ortega C, Porriño-Bustamante ML, Jiménez-Cauhé J, Vañó-Galván S. Is it traction or pressure? Case series of hair system-induced alopecia in six patients. J Eur Acad Dermatol Venereol 2024; 38:e775-e778. [PMID: 38372416 DOI: 10.1111/jdv.19888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/05/2024] [Indexed: 02/20/2024]
Affiliation(s)
- R Gil-Redondo
- Trichology Unit, Grupo Pedro Jaén, Madrid, Spain
- Department of Dermatology, Hospital Universitario La Paz, Madrid, Spain
| | - A Hermosa-Gelbard
- Trichology Unit, Grupo Pedro Jaén, Madrid, Spain
- Department of Dermatology, Hospital Universitario Ramón y Cajal, Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, Spain
| | - D Saceda-Corralo
- Trichology Unit, Grupo Pedro Jaén, Madrid, Spain
- Department of Dermatology, Hospital Universitario Ramón y Cajal, Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, Spain
| | - C Pindado-Ortega
- Trichology Unit, Grupo Pedro Jaén, Madrid, Spain
- Department of Dermatology, Hospital Universitario Ramón y Cajal, Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, Spain
| | - M L Porriño-Bustamante
- Trichology Unit, Grupo Pedro Jaén, Madrid, Spain
- Department of Dermatology, Hospital Universitario La Zarzuela, Madrid, Spain
| | - J Jiménez-Cauhé
- Trichology Unit, Grupo Pedro Jaén, Madrid, Spain
- Department of Dermatology, Hospital Universitario Ramón y Cajal, Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, Spain
| | - S Vañó-Galván
- Trichology Unit, Grupo Pedro Jaén, Madrid, Spain
- Department of Dermatology, Hospital Universitario Ramón y Cajal, Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, Spain
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Zhang H, Qing R, Li W, Yuan Y, Pan Y, Tang N, Huang Q, Wang B, Hao S. Rational Design of Human Hair Keratin-Driven Proteins for Hair Growth Promotion. Adv Healthc Mater 2024:e2401378. [PMID: 39132773 DOI: 10.1002/adhm.202401378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/31/2024] [Indexed: 08/13/2024]
Abstract
Keratins, the most abundant proteins in human hair, are excellent hair nutrients for growth. However, the complex components of keratin extract hinder their mechanism investigation, and the pure recombinant keratin with poor solubility limited its hair growth promotion efficiency. Here, the water-soluble recombinant keratins (RKs) of K31 and K81 are rationally designed through QTY Code methodology, which are then used to fabricate the microneedles to study the effect of keratin on hair growth. Interestingly, it is discovered that more than 40% of the hair follicles (HFs) in the RK81QTY group entered the anagen on day 12 and the diameter of new hair is 15.10 ± 2.45 µm, which significantly promoted growth and development of HFs and improved new hair quality compared to RK31QTY. Water-soluble RKs significantly enhanced HFs activity and de novo regeneration of robust hairs compared to extract and minoxidil by upregulating the PI3K/AKT/Nf-κB signaling axis. These findings highlight the potential of designing solubilized recombinant keratins with distinct properties to improve therapeutical effects and open new avenues to designing keratin-based proteins.
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Affiliation(s)
- Haojie Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
| | - Rui Qing
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wenfeng Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
| | - Yuhan Yuan
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
| | - Yinping Pan
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
| | - Ni Tang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
| | - Qiulan Huang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
| | - Shilei Hao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China
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Shen L, Zhang Y, Lin J, Wu W. Patchy alopecia in the central posterior occipital region. BMJ 2024; 385:e078418. [PMID: 38901861 DOI: 10.1136/bmj-2023-078418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Affiliation(s)
- Linxia Shen
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yue Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jinran Lin
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Wenyu Wu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Dermatology, Jing'an District Central Hospital, Shanghai, China
- Academy for Engineering and Technology, Fudan University, Shanghai, China
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