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Yuan J, Hou Q, He X, Zhong L, Li M, Fu X, Liu H. Chitosan-taurine nanoparticles cross-linked carboxymethyl chitosan hydrogels facilitate both acute and chronic diabetic wound healing. Int J Biol Macromol 2024; 273:132762. [PMID: 38876232 DOI: 10.1016/j.ijbiomac.2024.132762] [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: 01/18/2024] [Revised: 05/16/2024] [Accepted: 05/28/2024] [Indexed: 06/16/2024]
Abstract
Wound dressing diligently facilitate healing by fostering hemostasis, immunoregulation, the angiogenesis, and collagen deposition. Our methodology entails fabricating chitosan-taurine nanoparticles (CS-Tau) through an ionic gelation method. The morphology of CS-Tau was observed utilizing Transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Dynamic Light Scattering (DLS). The nanoparticles are subsequently incorporated into carboxymethyl chitosan hydrogels for crosslinking by EDC-NHS, yielding hydrogel dressings (CMCS-CS-Tau) designed to extend the duration of taurine release. In vitro investigations confirmed that these innovative compound dressings displayed superior biodegradation, biocompatibility, cytocompatibility, and non-toxicity, in addition to possessing anti-inflammatory properties, and stimulating the proliferation and mobility of human umbilical vein endothelial cells (HUVECs). Experiments conducted on mice models with full-thickness skin removal demonstrated that CMCS-CS-Tau efficaciously aided in wound healing by spurring angiogenesis, and encouraging collagen deposition. CMCS-CS-Tau can also minimize inflammation and promote collagen deposition in chronic diabetic wound. Hence, CMCS-CS-Tau promotes both acute and chronic diabetic wound healing. Furthermore, the sustained release mechanism of CMCS-CS-Tau on taurine reveals promising potential for extending its clinical utility in relation to various biological effects of taurine.
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Affiliation(s)
- Jifang Yuan
- Institute of Stomatology & Oral Maxilla Facial Key Laboratory, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China; Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing 100048, China; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, China
| | - Qian Hou
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China
| | - Xiaofeng He
- Department of Diagnostic Radiology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Lingzhi Zhong
- Basic Medical Department, Graduate School, Chinese PLA General Hospital, Beijing 100853, China
| | - Meirong Li
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China; Center for Drug Evaluation, National Medical Products Administration, Beijing 100076, China.
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing 100048, China; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, China.
| | - Hongchen Liu
- Institute of Stomatology & Oral Maxilla Facial Key Laboratory, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China.
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de Souza T, Monteiro JDC, Curioni CC, Cople-Rodrigues C, Citelli M. Nutrients with Antioxidant Properties and Their Effects on Lower-Limb Ulcers: A Systematic Review. INT J LOW EXTR WOUND 2024; 23:217-230. [PMID: 35072533 DOI: 10.1177/15347346221074861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chronic lower-limb ulcers (LLUs) are ulcers that fail to proceed through an orderly and timely process to produce anatomic and functional integrity. LLUs reduce the quality of life of affected individuals and are a public health problem. The treatment options include medications or surgery. Nutrition therapy is an important adjunct to improve the clinical picture and healing of LLUs. Considering that nutrients with antioxidant properties can improve the process of tissue healing, this systematic review aimed to evaluate the efficacy of antioxidant nutrient supplementation in the treatment of LLUs through randomized clinical trials. This systematic review was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses and the Cochrane Handbook for Systematic Reviews of Interventions. The guiding question was-can antioxidant nutrients help in the treatment of chronic LLUs? In total, 1184 articles were found when searching for antioxidant nutrients associated with the most common causes of LLUs. Fourteen articles were included in this review after removing duplicates, studies with topical and/or venous use of antioxidants, and articles published in other languages, except English. Omega-3 fatty acids, magnesium, zinc, vitamins A, C, D, and resveratrol along with probiotics positively improved the ulcer healing. These effects were more significant when there was initially a deficiency of the respective supplemented nutrients. Therefore, correcting and maintaining an adequate nutritional status can improve ulcer healing and contribute to the clinical treatment of patients with LLUs.
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Affiliation(s)
- Thamiris de Souza
- Nutrition Institute, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | | | | | | | - Marta Citelli
- Nutrition Institute, Rio de Janeiro State University, Rio de Janeiro, Brazil
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Wang Q, Yang X, Wang L, Lin T, Wei Z. Clinical Study of Rh-bFGF Combined With Collagen Sponge in the Treatment of Maxillofacial Deep Ⅱ Degree Burn. J Craniofac Surg 2024; 35:00001665-990000000-01375. [PMID: 38408325 PMCID: PMC11045551 DOI: 10.1097/scs.0000000000010023] [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: 11/27/2023] [Accepted: 12/10/2023] [Indexed: 02/28/2024] Open
Abstract
OBJECTIVES To observe the clinical effect of recombinant human alkaline fibroblast growth factor (rh-bFGF) combined with collagen sponge in the treatment of maxillofacial deepⅡ degree burn. METHODS From January 2019 to January 2022, 96 patients with maxillofacial deep Ⅱ degree burns were randomly divided into a control group (N=48) and an observation group (N=48). The observation group was treated with rh-bFGF and collagen sponge after debridement, whereas the control group was treated with silver sulfadiazine ointment after debridement. The healing rate and healing time of the wounds were observed, interleukin (IL)-6, tumor necrosis factor (TNF)-α, IL-10, epidermal growth factor (EGF), endothelial growth factor growth factor (VEGF), and metalloproteinase tissue inhibitor 1 (TIMP-1) were measured. Vancouver Scar Scale (VSS) was used to evaluate the local scar at 6 months after wound healing in both groups. RESULTS On the 10th, 14th, and 21st day of treatment, the wound healing rate in the observation group was higher than that in the control group (P<0.05), the wound healing time in the observation group was lower than that in the control group (P<0.05), and on the 14th day of treatment, the levels of TNF-α and IL-6 in the observation group were lower than those in the control group (P<0.05). The levels of IL-10 in the observation group were higher than those in the control group (P<0.05). The levels of EGF, VEGF, and TIMP-1 in the observation group were higher than those in the control group (P<0.05), and the scores of VSS in the observation group were lower than those in the control group (P<0.05). CONCLUSIONS Rh-bFGF combined with collagen sponge can decrease the levels of TNF-α and IL-6 and increase the levels of IL-10, which can control the inflammation effectively, at the same time, it can increase the level of EGF, VEGF, and TIMP-1, promote wound healing, and reduce scar hyperplasia. The treatment protocol is simple, safe, effective, and suitable for clinical application.
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Affiliation(s)
- Qian Wang
- Quanzhou Medical College, Quanzhou City, P.R. China
| | - Xiaolan Yang
- Department of Burn Intensive Care Unit, Quanzhou First Hospital, Fujian Province, P.R. China
| | | | - Tianlai Lin
- Department of Intensive Care Unit, Quanzhou First Hospital, Quanzhou City, Fujian Province, P.R. China
| | - Zhiyi Wei
- Department of Burn Intensive Care Unit, Quanzhou First Hospital, Fujian Province, P.R. China
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Borov S, Baldauf B, Henke J, Pavaci H, Perani A, Zrenner B, Dietl J, Mehilli J, Lau EW, Vonthein R, Bonnemeier H. Use of a taurolidine containing antimicrobial wash to reduce cardiac implantable electronic device infection. Europace 2023; 25:euad306. [PMID: 37831737 PMCID: PMC10616572 DOI: 10.1093/europace/euad306] [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: 07/24/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
AIMS TauroPace (Tauropharm, Bavaria Germany), a taurolidine solution for combating cardiac implantable electronic device (CIED) infection, was compared with a historical control of 3% hydrogen peroxide (H2O2) in a prospective observational study. METHODS AND RESULTS The device pocket was irrigated, and all hardware accessible within (leads, suture sleeves, pulse generator) was wiped with H2O2, TauroPace, or taurolidine in a galenic formulation during any invasive CIED procedure at the study centre. Only CIED procedures covered by TauroPace or H2O2 from 1 January 2017 to 28 February 2022 were included for analysis. Patients who underwent >1 procedure were censored for the last treatment group and reassigned at the next procedure. The primary endpoint was major CIED infection within 3 months. The secondary endpoints were CIED infection beyond 3 months, adverse events potentially related to the antimicrobial solutions, CIED system, procedure, and death, till the end of follow-up. TauroPace covered 654 procedures on 631 patients, and H2O2 covered 551 procedures on 532 patients. The TauroPace group had more patient risk factors for infection than the H2O2 group (P = 0.0058) but similar device and procedure-specific risk factors (P = 0.17). Cardiac implantable electronic device infection occurred in 0/654 (0%) of the TauroPace group and 6/551 (1.1%) of the H2O2 group (P = 0.0075). Death occurred in 23/654 (3.5%) of the TauroPace group and 14/551 (2.5%) of the H2O2 group (P = 0.33). Non-infection related adverse events were rarer in the TauroPace (3.8%) than the H2O2 (6.0%) group (P = 0.0802). CONCLUSION TauroPace is safe but more effective than H2O2 in reducing CIED infection. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT05576194.
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Affiliation(s)
- Stefan Borov
- Department of Cardiology, Klinikum Freising, Alois-Steinecker-Straße 18, Freising 85354, Germany
- Medical Faculty, Christian-Albrechts University, Christian-Albrechts-Platz 4, Kiel 24118, Germany
| | - Benito Baldauf
- Medical Faculty, Christian-Albrechts University, Christian-Albrechts-Platz 4, Kiel 24118, Germany
- Institute of Life Science, Hochschule Bremerhaven, An der Karlstadt 8, Bremerhaven 27568, Germany
| | - Jana Henke
- Medical Faculty, Christian-Albrechts University, Christian-Albrechts-Platz 4, Kiel 24118, Germany
| | - Herribert Pavaci
- Krankenhaus Landshut Achdorf, Achdorfer Weg 3, Landshut 84036, Germany
| | - Arben Perani
- Krankenhaus Landshut Achdorf, Achdorfer Weg 3, Landshut 84036, Germany
| | - Bernhard Zrenner
- Krankenhaus Landshut Achdorf, Achdorfer Weg 3, Landshut 84036, Germany
| | - Josef Dietl
- Krankenhaus Landshut Achdorf, Achdorfer Weg 3, Landshut 84036, Germany
| | - Julinda Mehilli
- Krankenhaus Landshut Achdorf, Achdorfer Weg 3, Landshut 84036, Germany
| | - Ernest W Lau
- Department of Cardiology, Royal Victoria Hospital, Grosvenor Road, Belfast BT12 6BA, UK
| | - Reinhard Vonthein
- Institut für Medizinische Biometrie und Statistik, Universität zu Lübeck, Ratzeburger Allee 160, Lübeck 23562, Germany
| | - Hendrik Bonnemeier
- Medical Faculty, Christian-Albrechts University, Christian-Albrechts-Platz 4, Kiel 24118, Germany
- Institute of Life Science, Hochschule Bremerhaven, An der Karlstadt 8, Bremerhaven 27568, Germany
- Department of Cardiology, Helios Klinikum Cuxhaven, Altenwalder Ch 10, Cuxhaven 27474, Germany
- Department of Cardiology, Helios Klinikum Wesermarsch, Mildred-Scheel-Straße 1, Nordenham 26954, Germany
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Chang WH, Tsai MC, Liu PY, Lu CJ, Howard Hsu YH. Nutrient Supplementation Improves Contact Lens-Induced Corneal Cell Damage Based on a SIRC Cellular Model. Eye Contact Lens 2023; 49:348-356. [PMID: 37378653 DOI: 10.1097/icl.0000000000000999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2023] [Indexed: 06/29/2023]
Abstract
OBJECTIVES The long-term use of contact lenses may damage the structure of the ocular surface and cause metabolic disorders in corneal cells. Vitamins and amino acids help maintain the physiological function of the eye. In the present study, the effects of nutrient (vitamin and amino acid) supplementation on corneal cell repair after contact lens-induced damage was investigated. METHODS High-performance liquid chromatography was used to quantify the nutrient contents of minimum essential medium, and the MTT assay was used to measure the viability of corneal cells. A Statens Seruminstitut rabbit cornea cellular model was established to simulate contact lens-induced keratopathy and investigate the effects of vitamin and amino acid supplementations on corneal cell repair. RESULTS The high water content lens group (78%) has a cell viability as high as 83.3%, whereas the cell viability of the low water content lens group (38%) is only 51.6%. The 32.0% difference between the two groups confirms the correlation between water content of lens and corneal viability. CONCLUSIONS Vitamin B2, vitamin B12, asparagine, and taurine supplementation may help improve contact lens-induced damage.
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Affiliation(s)
- Wan-Hsin Chang
- R&D Center (W.-H.C., M.-C.T., P.-Y.L., C.-J.L.), Yung Sheng Optical Co, Taichung, Taiwan; and Department of Chemistry (Y.-H.H.H.), Tunghai University, Taichung, Taiwan
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Giudice M, Catuzzo B, Berlier N, Lau EW, Bonnemeier H, Assadian O, Baldauf B, Borov S, Scacciatella P. Use of Taurolidine in a Patient With a Cardiac Implantable Electronic Device Protrusion. JACC Case Rep 2023; 14:101835. [PMID: 37152697 PMCID: PMC10157148 DOI: 10.1016/j.jaccas.2023.101835] [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: 02/16/2023] [Accepted: 03/01/2023] [Indexed: 05/09/2023]
Abstract
We report the successful salvage of cardiac implantable electronic device pulse generator protrusion sealed by the surrounding skin in a frail patient presenting 5 months after the last surgical revision. (Level of Difficulty: Advanced.).
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Affiliation(s)
- Marcello Giudice
- Department for Cardiology and Electrophysiology, U. Parini Hospital, Aosta, Italy
| | - Bruna Catuzzo
- Department for Cardiology and Electrophysiology, U. Parini Hospital, Aosta, Italy
| | - Nicola Berlier
- Department for Cardiology and Electrophysiology, U. Parini Hospital, Aosta, Italy
| | | | - Hendrik Bonnemeier
- Helios Klinikum Cuxhaven, Cuxhaven, Germany
- Helios Klinikum Wesermarsch, Nordenham, Germany
- Christian-Albrechts University, Kiel, Germany
| | - Ojan Assadian
- Landesklinikum Wiener Neustadt, Wiener Neustadt, Austria
| | - Benito Baldauf
- Christian-Albrechts University, Kiel, Germany
- Address for correspondence: Dr Benito Baldauf, Medical faculty, Christian-Albrechts University, Christian-Albrechts-Platz 4, 24118 Kiel, Germany.
| | - Stefan Borov
- Christian-Albrechts University, Kiel, Germany
- Lakumed Kliniken, Landshut, Germany
| | - Paolo Scacciatella
- Department for Cardiology and Electrophysiology, U. Parini Hospital, Aosta, Italy
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Rahimi F, Ahmadkhani N, Goodarzi A, Noori F, Hassanzadeh S, Saghati S, Khanmohammadi M, Goodarzi A. Gelatin-based hydrogel functionalized with taurine moieties for in vivo skin tissue regeneration. Biodes Manuf 2023. [DOI: 10.1007/s42242-022-00227-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Modulation of Macrophage Function by Bioactive Wound Dressings with an Emphasis on Extracellular Matrix-Based Scaffolds and Nanofibrous Composites. Pharmaceutics 2023; 15:pharmaceutics15030794. [PMID: 36986655 PMCID: PMC10053223 DOI: 10.3390/pharmaceutics15030794] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/18/2023] [Accepted: 02/23/2023] [Indexed: 03/04/2023] Open
Abstract
Bioactive wound dressings that are capable of regulating the local wound microenvironment have attracted a very large interest in the field of regenerative medicine. Macrophages have many critical roles in normal wound healing, and the dysfunction of macrophages significantly contributes to impaired or non-healing skin wounds. Regulation of macrophage polarization towards an M2 phenotype provides a feasible strategy to enhance chronic wound healing, mainly by promoting the transition of chronic inflammation to the proliferation phase of wound healing, upregulating the level of anti-inflammatory cytokines around the wound area, and stimulating wound angiogenesis and re-epithelialization. Based on this, modulation of macrophage functions by the rational design of bioactive scaffolds has emerged as a promising way to accelerate delayed wound healing. This review outlines current strategies to regulate the response of macrophages using bioactive materials, with an emphasis on extracellular matrix-based scaffolds and nanofibrous composites.
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Pérez-Hernández E, Pastrana-Carballo JJ, Gómez-Chávez F, Gupta RC, Pérez-Hernández N. A Key Metabolic Regulator of Bone and Cartilage Health. Endocrinol Metab (Seoul) 2022; 37:559-574. [PMID: 35938304 PMCID: PMC9449101 DOI: 10.3803/enm.2022.1443] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 06/07/2022] [Indexed: 11/17/2022] Open
Abstract
Taurine, a cysteine-derived zwitterionic sulfonic acid, is a common ingredient in energy drinks and is naturally found in fish and other seafood. In humans, taurine is produced mainly in the liver, and it can also be obtained from food. In target tissues, such as the retina, heart, and skeletal muscle, it functions as an essential antioxidant, osmolyte, and antiapoptotic agent. Taurine is also involved in energy metabolism and calcium homeostasis. Taurine plays a considerable role in bone growth and development, and high-profile reports have demonstrated the importance of its metabolism for bone health. However, these reports have not been collated for more than 10 years. Therefore, this review focuses on taurine-bone interactions and covers recently discovered aspects of taurine's effects on osteoblastogenesis, osteoclastogenesis, bone structure, and bone pathologies (e.g., osteoporosis and fracture healing), with due attention to the taurine-cartilage relationship.
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Affiliation(s)
- Elizabeth Pérez-Hernández
- Medical Unit of High Specialty of Traumatology, Orthopedics and Rehabilitation “Dr. Victorio de la Fuente Narváez”, Mexican Social Security Institute, Mexico City, Mexico
| | | | - Fernando Gómez-Chávez
- National School of Medicine and Homeopathy, National Polytechnic Institute, Mexico City, Mexico
| | - Ramesh C. Gupta
- School of Agricultural Sciences and Rural Development (SASRD) Nagaland University, Medziphema, India
- Ramesh C. Gupta. School of Agricultural Sciences and Rural Development (SASRD) Nagaland University, Medziphema-797106, India Tel: +91-3862-247102, Fax: +91-3862-247113, E-mail:
| | - Nury Pérez-Hernández
- National School of Medicine and Homeopathy, National Polytechnic Institute, Mexico City, Mexico
- Corresponding authors: Nury Pérez-Hernández. National School of Medicine and Homeopathy, National Polytechnic Institute, 07320, Mexico City, Mexico Tel: +52-5729-6000 ext. 55537, Fax: +52-5729-6000, E-mail:
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Timorshina S, Popova E, Osmolovskiy A. Sustainable Applications of Animal Waste Proteins. Polymers (Basel) 2022; 14:polym14081601. [PMID: 35458349 PMCID: PMC9027211 DOI: 10.3390/polym14081601] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 12/19/2022] Open
Abstract
Currently, the growth of the global population leads to an increase in demand for agricultural products. Expanding the obtaining and consumption of food products results in a scale up in the amount of by-products formed, the development of processing methods for which is becoming an urgent task of modern science. Collagen and keratin make up a significant part of the animal origin protein waste, and the potential for their biotechnological application is almost inexhaustible. The specific fibrillar structure allows collagen and keratin to be in demand in bioengineering in various forms and formats, as a basis for obtaining hydrogels, nanoparticles and scaffolds for regenerative medicine and targeted drug delivery, films for the development of biodegradable packaging materials, etc. This review describes the variety of sustainable sources of collagen and keratin and the beneficial application multiformity of these proteins.
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Zhang H, Zhang M, Wang X, Zhang M, Wang X, Li Y, Cui Z, Chen X, Han Y, Zhao W. Electrospun multifunctional nanofibrous mats loaded with bioactive anemoside B4 for accelerated wound healing in diabetic mice. Drug Deliv 2022; 29:174-185. [PMID: 34978237 PMCID: PMC8725929 DOI: 10.1080/10717544.2021.2021319] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
With the worldwide prevalence of diabetes and considering the complicated microenvironment of diabetic wounds, the design and development of innovative multifunctional wound dressing materials are much wanted for the treatment of hard-to-heal wounds in diabetic patients. In the present study, anti-inflammatory ingredients loaded with nanofibrous wound dressing materials were manufactured by a promising blend-electrospinning strategy, and their capability for treating the diabetic wound was also systematically explored. A polymer blend consisting of Chitosan (CS) and polyvinyl alcohol (PVA) was electrospun into CS-PVA nanofibrous mats as control groups. In the meanwhile, a bioactive ingredient of Chinese medicine Pulsatilla, anemoside B4(ANE), with different contents were loaded into the electrospinning solution to construct CS-PVA-ANE nanofibrous mats. The developed CS-PVA-ANE wound dressing materials exhibited multifunctional properties including prominent water absorption, biomimetic elastic mechanical properties, and sustained ANE releasing behavior, as well as outstanding hemostatic properties. The in vitro studies showed that the CS-PVA-ANE nanofiber mats could significantly suppress lipopolysaccharide (LPS)-stimulated differentiation of pro-inflammatory (M1) macrophage subsets, and notably reduce the reactive oxygen species (ROS) generation, as well as obviously decrease inflammatory cytokine release. The in vivo animal studies showed that the CS-PVA-ANE nanofiber mats promoted the healing of diabetic wounds by significantly enhancing wound closure rates, accelerating excellent angiogenesis, promoting re-epithelization and collagen matrix deposition throughout all stages of wound healing. The present study demonstrated that CS-PVA-ANE nanofiber mats could effectively shorten the wound-healing time by inhibiting inflammatory activity, which makes them promising candidates for the treatment of hard-to-heal wounds caused by diabetes.
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Affiliation(s)
- Hao Zhang
- Qingdao University Medical College, Qingdao, China
| | | | - Xumei Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Mi Zhang
- Qingdao University Medical College, Qingdao, China
| | - Xuelian Wang
- Qingdao University Medical College, Qingdao, China
| | - Yiyang Li
- Qingdao University Medical College, Qingdao, China
| | - Zhuoer Cui
- Qingdao University Medical College, Qingdao, China
| | - Xiuping Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yantao Han
- Qingdao University Medical College, Qingdao, China
| | - Wenwen Zhao
- Qingdao University Medical College, Qingdao, China.,State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
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