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Azuma K, Koizumi R, Izawa H, Morimoto M, Saimoto H, Osaki T, Ito N, Yamashita M, Tsuka T, Imagawa T, Okamoto Y, Inoue T, Ifuku S. Hair growth-promoting activities of chitosan and surface-deacetylated chitin nanofibers. Int J Biol Macromol 2018; 126:11-17. [PMID: 30576733 DOI: 10.1016/j.ijbiomac.2018.12.135] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/30/2018] [Accepted: 12/16/2018] [Indexed: 12/20/2022]
Abstract
In this study, the effects of chitosan and surface-deacetylated chitin nanofibrils (SDACNFs) on hair growth were evaluated. In human follicle dermal papilla cells in vitro, chitosan and SDACNFs were shown to increase cell growth on day 3 after the initiation of treatment, together with an increase in the production of fibroblast growth factor-7 (FGF-7) by these cells on day 3. Furthermore, in an in vivo study in mice, chitosan and SDACNF application promoted hair growth. The number of anagen follicles significantly increased compared with that in the control group, whereas the number of telogen follicles significantly decreased in the chitosan and SDACNF groups. In the chitosan and SDACNFs groups, moreover, the expression levels of FGF-7 and Sonic hedgehog were significantly upregulated in hair follicles. Overall, our results demonstrated that chitosan and SDACNFs promoted hair growth and therefore may have applications as novel therapeutic agents for the treatment of hair loss in patients.
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Affiliation(s)
- Kazuo Azuma
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Ryo Koizumi
- Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan.
| | - Hironori Izawa
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Minoru Morimoto
- Division of Instrumental Analysis, Research Center for Bioscience and Technology, Tottori University, 4-101 Koyama-minami, Tottori 680-8550, Japan.
| | - Hiroyuki Saimoto
- Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan.
| | - Tomohiro Osaki
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Norihiko Ito
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Masamichi Yamashita
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Takeshi Tsuka
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Tomohiro Imagawa
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Yoshiharu Okamoto
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Tadashi Inoue
- Marine Nano-fiber Co., Ltd., 4-101 Koyama-minami, Tottori 680-8552, Japan.
| | - Shinsuke Ifuku
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan; Marine Nano-fiber Co., Ltd., 4-101 Koyama-minami, Tottori 680-8552, Japan.
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Watthanaphanit A, Rujiravanit R. Sericin-binded-deprotenized natural rubber film containing chitin whiskers as elasto-gel dressing. Int J Biol Macromol 2017; 101:417-426. [PMID: 28322960 DOI: 10.1016/j.ijbiomac.2017.03.094] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/09/2017] [Accepted: 03/17/2017] [Indexed: 12/01/2022]
Abstract
Here, we aims to demonstrate a simple concept in biomaterials design by using natural resources solely as raw materials to fabricate elastic wound care dressing. Elasto-gel films comprise of silk sericin (SRC), natural rubber (NR), and chitin whisker (CTW) were developed. A glue-like protein SRC found in silk cocoons is beneficial for the treatment of wounds due to its superior skin moisturizing ability. However, the pure SRC film is generally difficult to be fabricated because of its weak structural feature. This limitation was overcome by using NR as a binder which consecutively rendered elasticity and strength of the films. CTW was chosen as another component to promote ability of the films for tissue restoration. Before the film formation, protein in the natural rubber latex (NRL) was removed to avoid allergic and cytotoxic problems. The enzyme-treated NR/SRC (ETNR/SRC) films having different blend compositions were fabricated by solution casting technique. The highest amount of the SRC to gain an easy to handle ETNR/SRC film was 30%. The ETNR/SRC/CTW films having 20% SRC were fabricated and studied in comparison. Essential properties of the films as elastic wound care dressings were investigated and effect of the materials chemistry on the observed properties were discussed.
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Affiliation(s)
- Anyarat Watthanaphanit
- Department of Chemistry, Faculty of Science, Mahidol University, Nakhon Pathom 73170, Thailand.
| | - Ratana Rujiravanit
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand; Center for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Bangkok 10330, Thailand
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Izumi R, Komada S, Ochi K, Karasawa L, Osaki T, Murahata Y, Tsuka T, Imagawa T, Itoh N, Okamoto Y, Izawa H, Morimoto M, Saimoto H, Azuma K, Ifuku S. Favorable effects of superficially deacetylated chitin nanofibrils on the wound healing process. Carbohydr Polym 2015; 123:461-7. [DOI: 10.1016/j.carbpol.2015.02.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 10/24/2022]
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