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Thuangtong R, Suthakorn J. Design, proof-of-concept of single robotic hair transplant mechanisms for both harvest and implant of hair grafts. Comput Struct Biotechnol J 2024; 24:31-45. [PMID: 38162956 PMCID: PMC10755542 DOI: 10.1016/j.csbj.2023.11.051] [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: 10/10/2023] [Revised: 11/27/2023] [Accepted: 11/27/2023] [Indexed: 01/03/2024] Open
Abstract
The design and development of a prototype for a singular robotic hair transplant system capable of harvesting and implanting hair grafts were executed in this study. To establish a proof-of-concept for hair transplant procedures involving harvesting and implantation, a test system using a spherical phantom of the scalp was selected. The developed prototype of the robotic hair transplant system demonstrates the potential to reduce the duration that grafts remain without a blood supply, thereby minimizing hair graft damage. Additionally, the overall operation time for follicular unit extraction is comparatively shorter than that of conventional systems. Results from the robot vision tests indicate an 89.6% accuracy for hair graft detection with a 4 mm hair length phantom and 97.4% for a 2 mm hair length phantom. In the robot position control test, the root mean square error was found to be 1.268°, with a standard error of the mean of 0.203°. These outcomes suggest that the proposed system performs effectively under the conditions of a spherical phantom with a 2 mm hair length and a 5 mm distance between harvests.
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Affiliation(s)
- Rattapon Thuangtong
- Department of Biomedical Engineering, Center for Biomedical and Robotics Technology, Faculty of Engineering, Mahidol University, Salaya, Thailand
- Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Jackrit Suthakorn
- Department of Biomedical Engineering, Center for Biomedical and Robotics Technology, Faculty of Engineering, Mahidol University, Salaya, Thailand
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Maletic A, Dumic-Cule I, Zic R, Milosevic M. Impact of Hair Transplantation on Quality of Life. Aesthetic Plast Surg 2024; 48:1825-1830. [PMID: 38123846 DOI: 10.1007/s00266-023-03781-6] [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: 09/06/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Alopecia is defined as partial or complete hair loss. The most common form is androgenetic alopecia, which occurs in both men and women. Despite the nonsurgical options available for treatment, the only permanent solution is hair transplantation. Hair loss has been shown to have significant psychological consequences associated with loss of self-confidence, poor self-image and difficulties in social functioning. We aim to examine the effect of hair transplantation on quality of life and psychosocial functioning. METHODS Forty-eight patients with androgenetic alopecia were enrolled in this two-center prospective study and underwent hair transplantation by the Follicular Unit Extraction method. Different questionnaires were used to assess their quality of life and other psychosocial parameters before and after hair transplantation. RESULTS According to SF-36 Physical and Mental Health Score patients showed significant improvement in life quality after hair transplantation. Diener's Life Satisfaction Scale (DASS-21) revealed increased life satisfaction after the procedure. Stress and anxiety DASS-21 subscales showed significantly reduced results; while, the DASS-21 depression scale and MSPSS were not significantly changed. CONCLUSION Taken together, quality of life and psychosocial functioning increased after hair transplantation. Structured abstract is required. Please provide.I insert name of paragraphs within abstract as follows: background, methods, results, conclusion Level of Evidence II: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
| | - Ivo Dumic-Cule
- University North, 104 brigade 3, 42000, Varaždin, Croatia.
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital Centre Zagreb, Kispaticeva 12, 10000, Zagreb, Croatia.
| | - Rado Zic
- Department of Plastic Surgery, University Hospital Dubrava, Zagreb, Croatia
- School of Medicine, University of Zagreb, Salata 3, 10000, Zagreb, Croatia
| | - Milan Milosevic
- School of Medicine, University of Zagreb, Salata 3, 10000, Zagreb, Croatia
- Department of Environmental Health and Occupational and Sports Medicine, Andrija Stampar School of Public Health, Rockfellerova 4, 10000, Zagreb, Croatia
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Xiong T, Zha P, Guo L, Ou Y, Zhan T. Construction of a Hair Implantation Needle Using Injection Needles and Assessment of its Efficiency Compared with Other Planting Methods. Aesthetic Plast Surg 2024:10.1007/s00266-024-04001-5. [PMID: 38609659 DOI: 10.1007/s00266-024-04001-5] [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: 10/02/2023] [Accepted: 03/11/2024] [Indexed: 04/14/2024]
Abstract
INTRODUCTION Hair transplantation surgery requires the efficient completion of hair follicles and thus appropriate hair implantation needles. The objectives of this study were to evaluate the effectiveness and feasibility of self-made hair implantation needles using injection needles and evaluate the speed of different hair implantation methods. METHODS Four patients were randomly assigned to four groups. A gem knife pre-punching planting method was used for the patient in Group A, while Group B received immediate implantation after punching with ordinary injection needles, Group C was treated with synchronized punching and planting using hair implanters, and Group D was treated with a self-made hair implantation needle. The speed of the different implantation methods for single and double hair follicles and the differences between the planting of single and double hair follicles were assessed. RESULTS Group D was found to have the fastest hair planting speed for both single and double hair follicles, followed by Groups C and A, with the slowest speed observed in Group B. Groups A and B were associated with significantly lower speeds of double hair planting than single hair planting, There was no significant difference between Groups C and D. CONCLUSIONS The self-made hair implantation needle is a novel and efficient tool for synchronized punching and planting. It has a faster planting speed and does not require assistance. LEVEL OF EVIDENCE II This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Tingfeng Xiong
- Department of Plastic Surgery, Affiliated Hospital of Jiujiang University, No. 57 Xunyang East Road, Jiujiang, 332000, Jiangxi, China.
- Jiujiang Clinical Precision Medicine Research Center, The Affiliated Hospital of Jiujiang University, Jiujiang, 332000, Jiangxi, China.
| | - Pengfeng Zha
- Department of Plastic Surgery, Affiliated Hospital of Jiujiang University, No. 57 Xunyang East Road, Jiujiang, 332000, Jiangxi, China
| | - Lei Guo
- Department of Plastic Surgery, Affiliated Hospital of Jiujiang University, No. 57 Xunyang East Road, Jiujiang, 332000, Jiangxi, China
| | - Yangze Ou
- Department of Plastic Surgery, Affiliated Hospital of Jiujiang University, No. 57 Xunyang East Road, Jiujiang, 332000, Jiangxi, China
| | - Taiguo Zhan
- Department of Plastic Surgery, Affiliated Hospital of Jiujiang University, No. 57 Xunyang East Road, Jiujiang, 332000, Jiangxi, China
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Le D, Gan Y, Mao X, Qu Q, Fan Z, Liu B, Sun P, Zhang J, Hu Z, Miao Y. Hair follicle extraction combined with an expanded scalp flap for facial organ reconstruction. J Plast Reconstr Aesthet Surg 2023; 87:295-302. [PMID: 37925918 DOI: 10.1016/j.bjps.2023.10.078] [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: 01/26/2023] [Revised: 08/23/2023] [Accepted: 10/07/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND Use of scalp skin for facial organ reconstruction represents a mainstream procedure for organ reconstruction. In most cases, adequate amounts of skin can be obtained by using tissue expanders, but harvesting sufficient scalp tissue in patients with low hairlines is challenging. Hair follicular unit extraction (FUE) is one approach to resolve this problem. With FUE, hair follicles are removed from the scalp skin, which can then be prepared as a donor site to obtain sufficient amounts of hairless skin. OBJECTIVES To evaluate the safety and efficacy of FUE when combined with an expanded scalp flap for facial organ reconstruction. MATERIAL AND METHODS Patients with low hairlines requiring facial organ reconstruction were selected for this study. The area of skin extension and hair removal were determined prior to surgery, a process which was performed in three stages. Stage I consisted of hair follicle removal using the FUE technique at the donor site. Stage II involved expander implantation using water injections. In Stage III facial organ reconstruction was completed. RESULTS With the use of the FUE technique, hair follicles from the donor scalp were thoroughly removed and the donor scalp tissue was successfully expanded. Postoperatively, no evident scar formation at the reconstruction site or contracture of the expanded flap was observed. All patients were satisfied with the outcome of their reconstruction procedure. CONCLUSION FUE provides a means for hair follicle removal from the donor site and can be employed to achieve a safe and effective procedure for facial reconstruction in patients with low hairlines.
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Affiliation(s)
- Demengjie Le
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Yuyang Gan
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Xiaoyan Mao
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Qian Qu
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Zhexiang Fan
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Bingcheng Liu
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Pingping Sun
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Jiaxian Zhang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China
| | - Zhiqi Hu
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China.
| | - Yong Miao
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong, People's Republic of China.
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Wang J, Liu J, Chen J, Wang Y. Application of Autologous Hair Transplantation Technique in Children with Cicatricial Alopecia. Adv Ther 2023; 40:4024-4031. [PMID: 37430139 PMCID: PMC10427550 DOI: 10.1007/s12325-023-02581-3] [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: 04/25/2023] [Accepted: 06/09/2023] [Indexed: 07/12/2023]
Abstract
INTRODUCTION Cicatricial alopecia not only affects the appearance of children's heads and faces but also their mental health in the long term. This study aims to explore the therapeutic characteristics and clinical effects of autologous hair transplantation technology in children with cicatricial alopecia. METHODS Children in our department who received autologous hair transplantation technology for cicatricial baldness of the scalp from February 2019 to October 2022 were collected. Their basic information was analyzed, and postoperative follow-up was conducted, including calculation of hair follicle survival rate, hair growth, complications, and an efficacy satisfaction survey given to the children's family members. RESULTS Thirteen children were included in this study (10 males and 3 females), aged from 4 years 1 month to 12 years 10 months, with an average age of 7 years 5 months. Two hundred to 2500 hair follicular units were extracted, with an average recipient area of 22.7 cm2, an average hair follicle unit density of 55.3 ± 9.1 per cm2, and an average hair/follicular unit (hair/FU) ratio of 1.75 ± 0.07. Thirteen children in this group were followed up for 6-12 months with the following treatment options: FUE (follicular unit extraction, 9 cases), FUT (follicular unit transplantation, 3 cases), and FUT combined with FUE (1 case). The average hair survival rate was 85.3%. Except for one child with temporary folliculitis, there were no complications. The GAIS score is divided into five levels: complete improvement (2 cases), obvious improvement (10 cases), partial improvement (1 case), no improvement (0 cases), and deterioration (0 cases). The patient satisfaction results included very satisfied (2 cases), mostly satisfied (10 cases), and dissatisfied (1 case). CONCLUSION Autologous hair transplantation technology is a safe and effective method for children with cicatricial alopecia.
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Affiliation(s)
- Jiping Wang
- Department of Burn and Plastic Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 56 Nanlishi Rd, Xicheng, Beijing, 100045, China
| | - Jing Liu
- Department of Burn and Plastic Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 56 Nanlishi Rd, Xicheng, Beijing, 100045, China
| | - Jigang Chen
- Department of Burn and Plastic Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 56 Nanlishi Rd, Xicheng, Beijing, 100045, China
| | - Yanni Wang
- Department of Burn and Plastic Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 56 Nanlishi Rd, Xicheng, Beijing, 100045, China.
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Ly NY, Fruechte S, Hordinsky MK, Sadick N, Arruda S, Farah RS. Medical and procedural treatment of androgenetic alopecia - Where are we? J Am Acad Dermatol 2023; 89:S36-S39. [PMID: 37591565 DOI: 10.1016/j.jaad.2023.05.004] [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: 01/03/2023] [Revised: 04/25/2023] [Accepted: 05/03/2023] [Indexed: 08/19/2023]
Abstract
Novel medical and procedural options for androgenetic alopecia have arrived. Low-dose oral minoxidil has made its clinical debut, while data on spironolactone, finasteride, and nutritional supplements have advanced. Minimally invasive technological advancements include photobiomodulation and platelet-rich plasma. Within hair transplantation, follicular unit extraction and robotics are now at the clinicians' fingertips.
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Affiliation(s)
- Nathalie Y Ly
- Department of Dermatology, University of Minnesota, Minneapolis, Minnesota; Ohio State University College of Medicine, Columbus, Ohio
| | - Sophia Fruechte
- Department of Dermatology, University of Minnesota, Minneapolis, Minnesota; Des Moines University College of Osteopathic Medicine, Des Moines, Iowa
| | - Maria K Hordinsky
- Department of Dermatology, University of Minnesota, Minneapolis, Minnesota
| | - Neil Sadick
- Department of Dermatology, University of Minnesota, Minneapolis, Minnesota; Weill Cornell Medical College, New York, New York; Sadick Dermatology, New York, New York
| | | | - Ronda S Farah
- Department of Dermatology, University of Minnesota, Minneapolis, Minnesota; Department of Dermatology, Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota.
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Zhou Y, Zhang J, Fan Z, Hu Z, Miao Y. Evaluation of a Novel Graft-Holding Solution in Hair Transplantation: A Randomized Controlled Clinical Study. Dermatol Surg 2023; 49:675-681. [PMID: 37036372 DOI: 10.1097/dss.0000000000003799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
BACKGROUND Hair transplantation has become a popular choice for alopecia treatment; however, postsurgical hair shedding still annoys both patients and surgeons. OBJECTIVE To explore the impact of graft-holding solution on postsurgical hair shedding and testify the protective efficacy of histidine-tryptophan-ketoglutarate solution with adenosine triphosphate and deferoxamine (HTK-AD). METHODS There were 240 patients enrolled in the study, and the follicles were placed into either HTK-AD or Ringer solution (RS). Masson staining and live/dead staining were performed to evaluate graft morphology and apoptosis levels, respectively. The between-group comparison of postsurgical graft shedding, survival rate, complications, and patient satisfaction was performed. RESULTS Grafts in HTK-AD maintained organized dense collagen construction and higher cell viability, but those preserved in RS became soft, which hindered implantation. Histidine-tryptophan-ketoglutarate solution with adenosine triphosphate and deferoxamine significantly reduced the incidence of postsurgical hair shedding (73.81% vs 95%), delayed shedding onset, and diminished shedding amount versus RS ( p < .05) when ≥3,000 grafts were transplanted. The shedding duration was shortened, and hair regrowth started earlier in HTK-AD versus RS ( p < .05); thus, satisfaction was increased. The final survival rate showed no difference between 2 groups. CONCLUSION Histidine-tryptophan-ketoglutarate solution with adenosine triphosphate and deferoxamine is superior to RS for hair graft preservation because it improves graft viability and alleviates postsurgical shedding.
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Affiliation(s)
- Yi Zhou
- All authors are affiliated with the Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University Guangzhou, Guangdong Province, China
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Abstract
Pathological hair loss (also known as alopecia) and shortage of hair follicle (HF) donors have posed an urgent requirement for HF regeneration. With the revelation of mechanisms in tissue engineering, the proliferation of HFs in vitro has achieved more promising trust for the treatments of alopecia and other skin impairments. Theoretically, HF organoids have great potential to develop into native HFs and attachments such as sweat glands after transplantation. However, since the rich extracellular matrix (ECM) deficiency, the induction characteristics of skin-derived cells gradually fade away along with their trichogenic capacity after continuous cell passaging in vitro. Therefore, ECM-mimicking support is an essential prelude before HF transplantation is implemented. This review summarizes the status of providing various epidermal and dermal cells with a three-dimensional (3D) scaffold to support the cell homeostasis and better mimic in vivo environments for the sake of HF regeneration. HF-relevant cells including dermal papilla cells (DPCs), hair follicle stem cells (HFSCs), and mesenchymal stem cells (MSCs) are able to be induced to form HF organoids in the vitro culture system. The niche microenvironment simulated by different forms of biomaterial scaffold can offer the cells a network of ordered growth environment to alleviate inductivity loss and promote the expression of functional proteins. The scaffolds often play the role of ECM substrates and bring about epithelial-mesenchymal interaction (EMI) through coculture to ensure the functional preservation of HF cells during in vitro passage. Functional HF organoids can be formed either before or after transplantation into the dermis layer. Here, we review and emphasize the importance of 3D culture in HF regeneration in vitro. Finally, the latest progress in treatment trials and critical analysis of the properties and benefits of different emerging biomaterials for HF regeneration along with the main challenges and prospects of HF regenerative approaches are discussed.
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Affiliation(s)
- Wei Zheng
- College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, P.R. China
| | - Chang-Hua Xu
- College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, P.R. China
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306, China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China
- National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai 201306, China
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Luo XY, Wu XG, Xu AE, Song XZ, Peng JZ. The Combination of the Mini-Punch Technique and Photodynamic Therapy for the Treatment of Mandibular Keloids and Hypertrophic Scars. Dermatol Surg 2022; 48:1294-1298. [PMID: 36449870 DOI: 10.1097/dss.0000000000003621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
BACKGROUND Mandibular keloids and hypertrophic scars can exert significant effects on the appearance of a patient. However, current treatments are not effective in all cases. Consequently, it is vital to identify a safe and effective treatment method. OBJECTIVE To investigate the therapeutic effect of the mini-punch technique combined with photodynamic therapy (PDT) on mandibular keloids and hypertrophic scars. PATIENTS AND METHODS Twenty patients with mandibular keloids and hypertrophic scars were enrolled, including 5 cases of keloids and 15 cases of hypertrophic scars, with a total of 40 lesions. The mini-punch technique was performed first, and then, PDT was conducted, once a week on 3 occasions in total. RESULTS After 12 months of follow-up, 30 lesions had improved by more than 50%, thus achieving a good therapeutic effect. The Vancouver Scar Scale score of patients ranged between 8 and 12 points with a mean of 9.60 ± 1.09 points before surgery and between 2 and 9 points with a mean of 4.15 ± 2.05 points at 12 months after surgery. The mean Vancouver Scar Scale score after treatment was significantly lower than that before treatment (t = 11.80, p < .001). CONCLUSION A combination of the mini-punch technique and PDT is an effective treatment for mandibular keloids and hypertrophic scars.
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Affiliation(s)
- Xian Yan Luo
- All authors are affiliated with the Department of Dermatology, Hangzhou Third People's Hospital, Zhejiang, China
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Shi Y, Zhao J, Li H, Yu M, Zhang W, Qin D, Qiu K, Chen X, Kong M. A Drug-Free, Hair Follicle Cycling Regulatable, Separable, Antibacterial Microneedle Patch for Hair Regeneration Therapy. Adv Healthc Mater 2022; 11:e2200908. [PMID: 35817085 DOI: 10.1002/adhm.202200908] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/02/2022] [Indexed: 01/27/2023]
Abstract
The development of painless hair loss therapy without side-effect is challenging. The dermal papilla is the signal center of hair follicles and plays a key role in the regulation of their cycling. Activation of dermal papilla cells (DPCs) would promote hair regeneration. In this study, a separable microneedle patch comprised of chitosan lactate (CL) and exosomes (EXO) from adipose-derived stem cells is fabricated. After insertion of the microneedle into the skin, the hyaluronic acid substrate dissolves fast and the swellable polyvinyl alcohol needles are retained. The EXO sustainedly released from needles can be endocytosed by DPCs and promote cell proliferation via the activation of the Wnt signaling pathway, while the L-lactate released by CL can promote cell growth by activating lactate dehydrogenase. CL and EXO synergetically facilitate hair regeneration through regulating hair follicle cycling. In animal tests, compared with topical administration of minoxidil, the drug-free microneedle patches can more significantly promote hair regeneration within 7 days with lower dosing frequency. Furthermore, the inherent antibacterial properties of CL make it possible to avoid potential infection. Such transdermally administrated drug-free microneedle patches provide a simple, safe, and efficient strategy for hair loss treatment and exhibit great potential in clinical application.
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Affiliation(s)
- Yan Shi
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Jiaxuan Zhao
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Hu Li
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Miao Yu
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Wenxue Zhang
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Di Qin
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Kaijin Qiu
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Xiguang Chen
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China.,Qingdao National Laboratory for Marine Science and Technology, 168 Wenhai Middle Road, Qingdao, 266237, P. R. China
| | - Ming Kong
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P. R. China
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Meng X, Zheng L, Xiao Y, Ding X, Wang K, Kang YJ. A novel method for histological examination of hair follicles. Histochem Cell Biol 2022; 158:39-48. [DOI: 10.1007/s00418-022-02098-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2022] [Indexed: 11/04/2022]
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12
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Lekhavat C, Rattanaumpawan P, Asawaworarit P, Kampirapap K, Chawvavanich P, Pathomvanich D. New Donor Excision Design for Better Hair Alignment in Hair Restoration Surgery. Aesthetic Plast Surg 2022; 46:220-228. [PMID: 34331092 DOI: 10.1007/s00266-021-02469-z] [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: 05/05/2021] [Accepted: 07/05/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND The linear scar and misalignment of hair follicles are disadvantages of the follicular unit transplantation (FUT) or strip technique. The most common misalignment is at the end of the strip. Although most surgeons try to match hair direction to achieve optimal hair alignment, their attempts are often unsuccessful. OBJECTIVES We aimed to assess strip designs to improve hair alignment during hair transplantation. METHODS We conducted a retrospective study of 157 patients who underwent hair transplantation with either the commonly used elliptical incision or our novel triangular flag-shaped designed incision on the donor strip tip. Two blind evaluators assessed the outcome of hair alignment using a 5-point visual analog scale. RESULTS In total, 303 wounds on 157 patients were assessed. Overall, our triangular flag-shaped design (TFD) achieved better hair alignment than the common elliptical design (CED) (p=0.01). Patients with hair direction straight on the upper wound edge and hair direction inward on the lower wound edge showed improved outcomes with TFD, whereas patients with hair direction inward on both upper and lower wound edges showed better outcomes with CED. CONCLUSIONS The TFD tip of donor strips achieved proper hair alignment for most hair transplant patients. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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