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Deng ZA, Wu M, Shen C, Yang X, Wang D, Li J, Wu D, Chen K. Microfluidic-blow-spinning of carvacrol-loaded porphyrin metal - organic framework nanofiber films with synergistic antibacterial capabilities for food packaging. Food Chem 2024; 460:140707. [PMID: 39111037 DOI: 10.1016/j.foodchem.2024.140707] [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: 05/10/2024] [Revised: 07/26/2024] [Accepted: 07/28/2024] [Indexed: 09/06/2024]
Abstract
The adherence of foodborne microorganisms threatens human health, necessitating the development of antibacterial food packaging films. In this study, the antibacterial agent carvacrol (CV), hindered by its high volatility and intense aromatic odor, was encapsulated within the photosensitive metal-organic frameworks (MOFs) material PCN-224 (loading rate 50%). Subsequently, the microfluidic-blow-spinning (MBS) technique was employed for the rapid fabrication of CV@PCN-224/polycaprolactone (PCL)/chitosan (CS) nanofiber films. The incorporation of CV@PCN-224 NPs enhances the nanofiber films' thermal stability and mechanical properties and improves the water vapor permeability while maintaining the sustained release of CV over an extended period and good biocompatibility. Due to the simultaneous loading of antibacterial agent (CV) and photosensitive agent (PCN-224), the CV@PCN-224/PCL/CS films exhibited good synergistic antibacterial functionality, as demonstrated by effective inhibition against both E. coli and S. aureus. All results show the vast potential of the prepared nanofiber films in antibacterial food packaging.
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Affiliation(s)
- Zi-An Deng
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/Key Laboratory of Ministry of Agriculture and Rural Affairs of Biology and Genetic Improvement of Horticultural Crops (Growth and Development), Zhejiang University, Hangzhou 310058, PR China
| | - Menglu Wu
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/Key Laboratory of Ministry of Agriculture and Rural Affairs of Biology and Genetic Improvement of Horticultural Crops (Growth and Development), Zhejiang University, Hangzhou 310058, PR China
| | - Chaoyi Shen
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, PR China
| | - Xiangzheng Yang
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/Key Laboratory of Ministry of Agriculture and Rural Affairs of Biology and Genetic Improvement of Horticultural Crops (Growth and Development), Zhejiang University, Hangzhou 310058, PR China; Jinan Fruit Research Institute, All China Federation of Supply and Marketing Cooperatives, Jinan 250014, PR China
| | - Da Wang
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/Key Laboratory of Ministry of Agriculture and Rural Affairs of Biology and Genetic Improvement of Horticultural Crops (Growth and Development), Zhejiang University, Hangzhou 310058, PR China; Jinan Fruit Research Institute, All China Federation of Supply and Marketing Cooperatives, Jinan 250014, PR China
| | - Jiangkuo Li
- Tianjin Academy of Agricultural Sciences, National Engineering and Technology Research Center for Preservation of Agricultural Products (Tianjin), Tianjin 300384, PR China
| | - Di Wu
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/Key Laboratory of Ministry of Agriculture and Rural Affairs of Biology and Genetic Improvement of Horticultural Crops (Growth and Development), Zhejiang University, Hangzhou 310058, PR China; College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, PR China; Hainan Institute of Zhejiang University, Sanya 572025, PR China.
| | - Kunsong Chen
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/Key Laboratory of Ministry of Agriculture and Rural Affairs of Biology and Genetic Improvement of Horticultural Crops (Growth and Development), Zhejiang University, Hangzhou 310058, PR China
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Alam F, Ashfaq Ahmed M, Jalal AH, Siddiquee I, Adury RZ, Hossain GMM, Pala N. Recent Progress and Challenges of Implantable Biodegradable Biosensors. MICROMACHINES 2024; 15:475. [PMID: 38675286 PMCID: PMC11051912 DOI: 10.3390/mi15040475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024]
Abstract
Implantable biosensors have evolved to the cutting-edge technology of personalized health care and provide promise for future directions in precision medicine. This is the reason why these devices stand to revolutionize our approach to health and disease management and offer insights into our bodily functions in ways that have never been possible before. This review article tries to delve into the important developments, new materials, and multifarious applications of these biosensors, along with a frank discussion on the challenges that the devices will face in their clinical deployment. In addition, techniques that have been employed for the improvement of the sensitivity and specificity of the biosensors alike are focused on in this article, like new biomarkers and advanced computational and data communicational models. A significant challenge of miniaturized in situ implants is that they need to be removed after serving their purpose. Surgical expulsion provokes discomfort to patients, potentially leading to post-operative complications. Therefore, the biodegradability of implants is an alternative method for removal through natural biological processes. This includes biocompatible materials to develop sensors that remain in the body over longer periods with a much-reduced immune response and better device longevity. However, the biodegradability of implantable sensors is still in its infancy compared to conventional non-biodegradable ones. Sensor design, morphology, fabrication, power, electronics, and data transmission all play a pivotal role in developing medically approved implantable biodegradable biosensors. Advanced material science and nanotechnology extended the capacity of different research groups to implement novel courses of action to design implantable and biodegradable sensor components. But the actualization of such potential for the transformative nature of the health sector, in the first place, will have to surmount the challenges related to biofouling, managing power, guaranteeing data security, and meeting today's rules and regulations. Solving these problems will, therefore, not only enhance the performance and reliability of implantable biodegradable biosensors but also facilitate the translation of laboratory development into clinics, serving patients worldwide in their better disease management and personalized therapeutic interventions.
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Affiliation(s)
- Fahmida Alam
- Department of Electrical and Computer Engineering, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (A.H.J.); (G.M.M.H.)
| | | | - Ahmed Hasnain Jalal
- Department of Electrical and Computer Engineering, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (A.H.J.); (G.M.M.H.)
| | - Ishrak Siddiquee
- Institute of Microsystems Technology, University of South-Eastern Norway, Horten, 3184 Vestfold, Norway;
| | - Rabeya Zinnat Adury
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL 32611, USA;
| | - G M Mehedi Hossain
- Department of Electrical and Computer Engineering, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (A.H.J.); (G.M.M.H.)
| | - Nezih Pala
- Department of Electrical and Computer Engineering, Florida International University, Miami, FL 33174, USA;
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Ru M, Hai AM, Wang L, Yan S, Zhang Q. Recent progress in silk-based biosensors. Int J Biol Macromol 2022; 224:422-436. [DOI: 10.1016/j.ijbiomac.2022.10.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/05/2022] [Accepted: 10/15/2022] [Indexed: 11/05/2022]
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4
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Reddy VS, Agarwal B, Ye Z, Zhang C, Roy K, Chinnappan A, Narayan RJ, Ramakrishna S, Ghosh R. Recent Advancement in Biofluid-Based Glucose Sensors Using Invasive, Minimally Invasive, and Non-Invasive Technologies: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1082. [PMID: 35407200 PMCID: PMC9000490 DOI: 10.3390/nano12071082] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/14/2022] [Accepted: 03/22/2022] [Indexed: 02/06/2023]
Abstract
Biosensors have potentially revolutionized the biomedical field. Their portability, cost-effectiveness, and ease of operation have made the market for these biosensors to grow rapidly. Diabetes mellitus is the condition of having high glucose content in the body, and it has become one of the very common conditions that is leading to deaths worldwide. Although it still has no cure or prevention, if monitored and treated with appropriate medication, the complications can be hindered and mitigated. Glucose content in the body can be detected using various biological fluids, namely blood, sweat, urine, interstitial fluids, tears, breath, and saliva. In the past decade, there has been an influx of potential biosensor technologies for continuous glucose level estimation. This literature review provides a comprehensive update on the recent advances in the field of biofluid-based sensors for glucose level detection in terms of methods, methodology and materials used.
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Affiliation(s)
- Vundrala Sumedha Reddy
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Bhawana Agarwal
- Department of Chemical Engineering, BITS Pilani-Hyderabad Campus, Hyderabad 500078, India;
| | - Zhen Ye
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Chuanqi Zhang
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Kallol Roy
- Centre for Advanced 2D Materials, National University of Singapore, Singapore 117546, Singapore;
| | - Amutha Chinnappan
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Roger J. Narayan
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC 27695, USA;
| | - Seeram Ramakrishna
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Rituparna Ghosh
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
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Zhang Y, Jiao Y, Wang C, Zhang C, Wang H, Feng Z, Gu Y, Wang Z. Design and characterization of small-diameter tissue-engineered blood vessels constructed by electrospun polyurethane-core and gelatin-shell coaxial fiber. Bioengineered 2021; 12:5769-5788. [PMID: 34519254 PMCID: PMC8806492 DOI: 10.1080/21655979.2021.1969177] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/10/2021] [Accepted: 08/10/2021] [Indexed: 01/12/2023] Open
Abstract
Substitution or bypass is the most effective treatment for vascular occlusive diseases.The demand for artificial blood vessels has seen an unprecedented rise due to the limited supply of autologous blood vessels. Tissue engineering is the best approach to provide artificial blood vessels. In this study, a new type of small-diameter artificial blood vessel with good mechanical and biological properties was designed by using electrospinning coaxial fibers. Four groups of coaxial fibers vascular membranes having polyurethane/gelatin core-shell structure were cross-linked by the EDC-NHS system and characterized. The core-shell structure of the coaxial vascular fibers was observed by transmission electron microscope. After the crosslinking, the stress and elastic modulus increased and the elongation decreased, burst pressure of 0.11 group reached the maximum (2844.55 ± 272.65 mmHg) after cross-linking, which acted as the experimental group. Masson staining identified blue-stained ring or elliptical gelatin ingredients in the vascular wall. The cell number in the vascular wall of the coaxial group was found in muscle embedding experiment significantly higher than that of the non-coaxial group at all time points(p < 0.001). Our results showed that the coaxial vascular graft with the ratio of 0.2:0.11 had better mechanical properties (burst pressure reached 2844.55 ± 272.65 mmHg); Meanwhile its biological properties were also outstanding, which was beneficial to cell entry and offered good vascular remodeling performance.Polyurethane (PU); Gelatin (Gel); Polycaprolactone (PCL); polylactic acid (PLA);1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC); N-Hydroxy succinimide (NHS); 4-Morpholine-ethane-sulfonic (MES); phosphate buffered saline (PBS); fetal calf serum (FCS); Minimum Essential Medium (MEM); Dimethyl sulfoxide (DMSO); hematoxylin-eosin (HE).
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Affiliation(s)
- Yuanguo Zhang
- Department of Vascular Surgery, Xuan Wu Hospital of Capital Medical University, Beijing, China
| | - Yuhao Jiao
- Department of Vascular Surgery, Xuan Wu Hospital of Capital Medical University, Beijing, China
| | - Cong Wang
- Department of Vascular Surgery, Xuan Wu Hospital of Capital Medical University, Beijing, China
| | - Chengchao Zhang
- Department of Vascular Surgery, Xuan Wu Hospital of Capital Medical University, Beijing, China
| | - Han Wang
- Division of Biomaterials, National Institiutes for Food and Drug Control, Beijing, China
| | - Zengguo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Yongquan Gu
- Department of Vascular Surgery, Xuan Wu Hospital of Capital Medical University, Beijing, China
| | - Zhonggao Wang
- Department of Vascular Surgery, Xuan Wu Hospital of Capital Medical University, Beijing, China
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Kharbikar BN, Chendke GS, Desai TA. Modulating the foreign body response of implants for diabetes treatment. Adv Drug Deliv Rev 2021; 174:87-113. [PMID: 33484736 PMCID: PMC8217111 DOI: 10.1016/j.addr.2021.01.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/30/2020] [Accepted: 01/10/2021] [Indexed: 02/06/2023]
Abstract
Diabetes Mellitus is a group of diseases characterized by high blood glucose levels due to patients' inability to produce sufficient insulin. Current interventions often require implants that can detect and correct high blood glucose levels with minimal patient intervention. However, these implantable technologies have not reached their full potential in vivo due to the foreign body response and subsequent development of fibrosis. Therefore, for long-term function of implants, modulating the initial immune response is crucial in preventing the activation and progression of the immune cascade. This review discusses the different molecular mechanisms and cellular interactions involved in the activation and progression of foreign body response (FBR) and fibrosis, specifically for implants used in diabetes. We also highlight the various strategies and techniques that have been used for immunomodulation and prevention of fibrosis. We investigate how these general strategies have been applied to implants used for the treatment of diabetes, offering insights on how these devices can be further modified to circumvent FBR and fibrosis.
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Affiliation(s)
- Bhushan N Kharbikar
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Gauree S Chendke
- University of California Berkeley - University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA
| | - Tejal A Desai
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94143, USA; University of California Berkeley - University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA; Department of Bioengineering, University of California, Berkeley, CA 94720, USA.
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7
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Yadav C, Chhajed M, Choudhury P, Sahu RP, Patel A, Chawla S, Goswami L, Goswami C, Li X, Agrawal AK, Saini A, Maji PK. Bio-extract amalgamated sodium alginate-cellulose nanofibres based 3D-sponges with interpenetrating BioPU coating as potential wound care scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111348. [PMID: 33254970 DOI: 10.1016/j.msec.2020.111348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 07/12/2020] [Accepted: 08/05/2020] [Indexed: 01/06/2023]
Abstract
In this work, sodium alginate (SA) based "all-natural" composite bio-sponges were designed for potential application as wound care scaffold. The composite bio-sponges were developed from the aqueous amalgamation of SA and cellulose nanofibres (CNFs) in bio-extracts like Rice water (Rw) and Giloy extract (Ge). These sponges were modified by employing a simple coating strategy using vegetable oil-based bio-polyurethane (BioPU) to tailor their physicochemical and biological properties so as to match the specific requirements of a wound care scaffold. Bio-sponges with shared interpenetrating polymeric network structures were attained at optimized BioPU coating formulation. The interpenetration of BioPU chains within the sponge construct resulted in the formation of numerous micro-networks in the interconnected microporous structure of sponges (porosity ≥75%). The coated sponge showed a superior mechanical strength (compressive strength ~3.8 MPa, compressive modulus ~35 MPa) with appreciable flexibility and recoverability under repeated compressive loading-unloading cycles. A tunable degradation behaviour was achieved by varying BioPU coating concentrations owing to the different degree of polymer chain entanglement within the sponge construct. The physical entanglement of BioPU chains with core structural components of sponge improved their structural stability by suppressing their full fragmentation in water-based medium without affecting its swelling behaviour (swelling ratio > 1000%). The coated sponge surface has provided a suitable moist-adherent physical environment to support the adhesion and growth of skin cells (HaCaT cells). The MTT (3-(4,5-dimethyl thiazolyl-2)-2,5-diphenyltetrazolium bromide) assay and hemolytic assay revealed the non-toxic and biocompatible nature of coated sponges in vitro. Moreover, no signs of skin erythema or edema were observed during in vivo dermal irritation and corrosion test performed on the skin of Sprague Dawley (SD) rats. Our initial observations revealed the credibility of these sponges as functional wound care scaffolds as well as its diverse potential as a suitable substrate for various tissue engineering applications.
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Affiliation(s)
- Chandravati Yadav
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, PR China; Indian Institute of Technology Roorkee, Department of Polymer and Process Engineering, Saharanpur Campus, Saharanpur 247001, U.P., India.
| | - Monika Chhajed
- Indian Institute of Technology Roorkee, Department of Polymer and Process Engineering, Saharanpur Campus, Saharanpur 247001, U.P., India
| | - Priyanka Choudhury
- School of Biotechnology, Kalinga Institute of Industrial Technology, Patia, Bhubaneswar 751024, India
| | - Ram Prasad Sahu
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni, Odisha 752050, India
| | - Amit Patel
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Saurabh Chawla
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni, Odisha 752050, India
| | - Luna Goswami
- School of Biotechnology, Kalinga Institute of Industrial Technology, Patia, Bhubaneswar 751024, India
| | - Chandan Goswami
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni, Odisha 752050, India
| | - Xinping Li
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, PR China
| | - Ashish K Agrawal
- Technical Physics Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Arun Saini
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, PR China
| | - Pradip K Maji
- Indian Institute of Technology Roorkee, Department of Polymer and Process Engineering, Saharanpur Campus, Saharanpur 247001, U.P., India.
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Hajilou H, Farahpour MR, Hamishehkar H. Polycaprolactone nanofiber coated with chitosan and Gamma oryzanol functionalized as a novel wound dressing for healing infected wounds. Int J Biol Macromol 2020; 164:2358-2369. [PMID: 32791277 DOI: 10.1016/j.ijbiomac.2020.08.079] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/30/2020] [Accepted: 08/08/2020] [Indexed: 12/27/2022]
Abstract
This study was conducted to design and evaluate a wound dressing based on a polycaprolactone (PCL) nanofiber coated with gamma oryzanol (GO) and chitosan (CS) in mice model. All the dressings were prepared by electrospinning method, and their morphology and physical properties were investigated. The mice were divided into five groups and treated with I) PCL-sole (PCL), III) PCL-mupirocin (PCL-M), IV) PCL-GO, IV) PCL-CS, and V) PCL-CS-GO. Wound area, total bacterial count, histopathological parameters, and expressions of IL-1β, TNF-α, IL-10, MMP-9, EGF, and VEGF were assessed. The fibers were randomly distributed in PCL group, but loading CS and GO increased the complexity and placing on the dressings. PCLs loaded with GO and CS showed lower viscosity, surface tension, and fiber diameter and higher conductivity and water contact angle compared to unloaded PCLs (P < 0.05). The treatment with PCLs loaded with mupirocin, CS, and GO significantly reduced wound area and total bacterial count (P < 0.05). Loading PCLs with mupirocin, CS, and GO decreased the expressions of IL-1β, TNF-α, MMP-9, but increased the expressions of IL-10 and VEGF compared to the unloaded PCL group (P < 0.05). The most optimal responses to wound healing and physical parameters belonged to the PCL-CS-GO group.
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Affiliation(s)
- Hesaam Hajilou
- Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia Branch, Islamic Azad University, Urmia, Iran
| | - Mohammad Reza Farahpour
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Urmia Branch, Islamic Azad University, Urmia, Iran.
| | - Hamed Hamishehkar
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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9
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Viola G, Chang J, Maltby T, Steckler F, Jomaa M, Sun J, Edusei J, Zhang D, Vilches A, Gao S, Liu X, Saeed S, Zabalawi H, Gale J, Song W. Bioinspired Multiresonant Acoustic Devices Based on Electrospun Piezoelectric Polymeric Nanofibers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:34643-34657. [PMID: 32639712 PMCID: PMC7460092 DOI: 10.1021/acsami.0c09238] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/08/2020] [Indexed: 05/23/2023]
Abstract
Cochlear hair cells are critical for the conversion of acoustic into electrical signals and their dysfunction is a primary cause of acquired hearing impairments, which worsen with aging. Piezoelectric materials can reproduce the acoustic-electrical transduction properties of the cochlea and represent promising candidates for future cochlear prostheses. The majority of piezoelectric hearing devices so far developed are based on thin films, which have not managed to simultaneously provide the desired flexibility, high sensitivity, wide frequency selectivity, and biocompatibility. To overcome these issues, we hypothesized that fibrous membranes made up of polymeric piezoelectric biocompatible nanofibers could be employed to mimic the function of the basilar membrane, by selectively vibrating in response to different frequencies of sound and transmitting the resulting electrical impulses to the vestibulocochlear nerve. In this study, poly(vinylidene fluoride-trifluoroethylene) piezoelectric nanofiber-based acoustic circular sensors were designed and fabricated using the electrospinning technique. The performance of the sensors was investigated with particular focus on the identification of the resonance frequencies and acoustic-electrical conversion in fibrous membrane with different size and fiber orientation. The voltage output (1-17 mV) varied in the range of low resonance frequency (100-400 Hz) depending on the diameter of the macroscale sensors and alignment of the fibers. The devices developed can be regarded as a proof-of-concept demonstrating the possibility of using piezoelectric fibers to convert acoustic waves into electrical signals, through possible synergistic effects of piezoelectricity and triboelectricity. The study has paved the way for the development of self-powered nanofibrous implantable auditory sensors.
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Affiliation(s)
- Giuseppe Viola
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
| | - Jinke Chang
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
| | - Thomas Maltby
- Electrical
and Electronic Engineering, London South
Bank University, London SE1 0AA, United Kingdom
| | - Felix Steckler
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
| | - Mohamed Jomaa
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
| | - Jianfei Sun
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
- School
of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
| | - Janelle Edusei
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
| | - Dong Zhang
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
| | - Antonio Vilches
- Electrical
and Electronic Engineering, London South
Bank University, London SE1 0AA, United Kingdom
| | - Shuo Gao
- UCL
Department of Electronic and Electrical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Xiao Liu
- UCL
Department of Electronic and Electrical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Shakeel Saeed
- UCL Ear Institute, University
College London, London WC1X 8EE, United Kingdom
| | - Hassan Zabalawi
- UCL Ear Institute, University
College London, London WC1X 8EE, United Kingdom
| | - Jonathan Gale
- UCL Ear Institute, University
College London, London WC1X 8EE, United Kingdom
| | - Wenhui Song
- UCL
Centre for Biomaterials in Surgical Reconstruction and Regeneration,
Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom
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10
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Sumathy B, Nair PD. Keratinocytes-hair follicle bulge stem cells-fibroblasts co-cultures on a tri-layer skin equivalent derived from gelatin/PEG methacrylate nanofibers. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:869-894. [DOI: 10.1080/09205063.2020.1725861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Babitha Sumathy
- Division of Tissue Engineering and Regeneration Technologies, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
| | - Prabha D Nair
- Division of Tissue Engineering and Regeneration Technologies, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
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11
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Sharikova A, Foraida ZI, Sfakis L, Peerzada L, Larsen M, Castracane J, Khmaladze A. Characterization of nanofibers for tissue engineering: Chemical mapping by Confocal Raman microscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117670. [PMID: 31715385 PMCID: PMC6930965 DOI: 10.1016/j.saa.2019.117670] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 10/15/2019] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
Nanofiber scaffolds are used in bioengineering for functional support of growing tissues. To fine tune nanofiber properties for specific applications, it is often necessary to characterize the spatial distribution of their chemical content. Raman spectroscopy is a common tool used to characterize chemical composition of various materials, including nanofibers. In combination with a confocal microscope, it allows simultaneous mapping of both spectral and spatial features of inhomogeneous structures, also known as hyperspectral imaging. However, such mapping is usually performed on microscopic scale, due to the resolution of the scanning system being diffraction limited (about 0.2-0.5 micron, depending on the excitation wavelength). We present an application of confocal Raman microscopy to hyperspectral mapping of nanofibers, where nanoscale features are resolved by means of oversampling and extensive data processing, including Singular Value Decomposition and Classical Least Squares decomposition techniques. Oversampling and data processing facilitated evaluation of the spatial distribution of different chemical components within multi-component nanofibers.
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Affiliation(s)
- Anna Sharikova
- Department of Physics, SUNY University at Albany, 1400 Washington Ave., Albany, NY, 12222, USA
| | - Zahraa I Foraida
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, 257 Fuller Rd, Albany, NY, 12203, USA
| | - Lauren Sfakis
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, 257 Fuller Rd, Albany, NY, 12203, USA
| | - Lubna Peerzada
- Department of Physics, SUNY University at Albany, 1400 Washington Ave., Albany, NY, 12222, USA
| | - Melinda Larsen
- Department of Biological Sciences, SUNY University at Albany, 1400 Washington Ave., Albany, NY, 12222, USA
| | - James Castracane
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, 257 Fuller Rd, Albany, NY, 12203, USA
| | - Alexander Khmaladze
- Department of Physics, SUNY University at Albany, 1400 Washington Ave., Albany, NY, 12222, USA.
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12
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Multi-layered core-sheath fiber membranes for controlled drug release in the local treatment of brain tumor. Sci Rep 2019; 9:17936. [PMID: 31784666 PMCID: PMC6884550 DOI: 10.1038/s41598-019-54283-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 11/07/2019] [Indexed: 12/21/2022] Open
Abstract
Interstitial chemotherapy plays a pivotal role in the treatment of glioblastoma multiforme (GBM), an aggressive form of primary brain cancer, by enhancing drug biodistribution to the tumor and avoiding systemic toxicities. The use of new polymer structures that extend the release of cytotoxic agents may therefore increase survival and prevent recurrence. A novel core-sheath fiber loaded with the drug carmustine (BCNU) was evaluated in an in vivo brain tumor model. Three-dimensional discs were formed from coaxially electrospun fiber membranes and in vitro BCNU release kinetics were measured. In vivo survival was assessed following implantation of discs made of compressed core-sheath fibers (NanoMesh) either concurrently with or five days after intracranial implantation of 9L gliosarcoma. Co-implantation of NanoMesh and 9L gliosarcoma resulted in statistically significant long-term survival (>150 days). Empty control NanoMesh confirmed the safety of these novel implants. Similarly, Day 5 studies showed significant median, overall, and long-term survival rates, suggesting optimal control of tumor growth, confirmed with histological and immunohistochemical analyses. Local chemotherapy by means of biodegradable NanoMesh implants is a new treatment paradigm for the treatment for brain tumors. Drug delivery with coaxial core-sheath structures benefits from high drug loading, controlled long-term release kinetics, and slow polymer degradation. This represents a promising evolution for the current treatment of GBM.
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13
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Sheikholeslam M, Wright MEE, Cheng N, Oh HH, Wang Y, Datu AK, Santerre JP, Amini-Nik S, Jeschke MG. Electrospun Polyurethane–Gelatin Composite: A New Tissue-Engineered Scaffold for Application in Skin Regeneration and Repair of Complex Wounds. ACS Biomater Sci Eng 2019; 6:505-516. [DOI: 10.1021/acsbiomaterials.9b00861] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Mohammadali Sheikholeslam
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
- Department of Biomaterials, Tissue Engineering and Nanotechnology, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Isfahan 81746-73461, Iran
| | | | - Nan Cheng
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
| | - Hwan Hee Oh
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
| | - Yanran Wang
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
| | - Andrea K. Datu
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
| | | | - Saeid Amini-Nik
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
| | - Marc G. Jeschke
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
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14
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Worsley A, Vassileva K, Tsui J, Song W, Good L. Polyhexamethylene Biguanide:Polyurethane Blend Nanofibrous Membranes for Wound Infection Control. Polymers (Basel) 2019; 11:polym11050915. [PMID: 31121845 PMCID: PMC6572704 DOI: 10.3390/polym11050915] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/12/2019] [Accepted: 05/20/2019] [Indexed: 12/25/2022] Open
Abstract
Polyhexamethylene biguanide (PHMB) is a broad-spectrum antiseptic which avoids many efficacy and toxicity problems associated with antimicrobials, in particular, it has a low risk of loss of susceptibility due to acquired antimicrobial resistance. Despite such advantages, PHMB is not widely used in wound care, suggesting more research is required to take full advantage of PHMB’s properties. We hypothesised that a nanofibre morphology would provide a gradual release of PHMB, prolonging the antimicrobial effects within the therapeutic window. PHMB:polyurethane (PU) electrospun nanofibre membranes were prepared with increasing PHMB concentrations, and the effects on antimicrobial activities, mechanical properties and host cell toxicity were compared. Overall, PHMB:PU membranes displayed a burst release of PHMB during the first hour following PBS immersion (50.5–95.9% of total released), followed by a gradual release over 120 h (≤25 wt % PHMB). The membranes were hydrophilic (83.7–53.3°), gradually gaining hydrophobicity as PHMB was released. They displayed superior antimicrobial activity, which extended past the initial release period, retained PU hyperelasticity regardless of PHMB concentration (collective tensile modulus of 5–35% PHMB:PU membranes, 3.56 ± 0.97 MPa; ultimate strain, >200%) and displayed minimal human cell toxicity (<25 wt % PHMB). With further development, PHMB:PU electrospun membranes may provide improved wound dressings.
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Affiliation(s)
- Anna Worsley
- Royal Veterinary College, Department of Pathobiology and Population Sciences, 4 Royal College Street, London NW1 0TU, UK.
- University College London, Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery & Interventional Science, 9th floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
| | - Kristin Vassileva
- Royal Veterinary College, Department of Pathobiology and Population Sciences, 4 Royal College Street, London NW1 0TU, UK.
- University College London, Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery & Interventional Science, 9th floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
| | - Janice Tsui
- University College London, Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery & Interventional Science, 9th floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
| | - Wenhui Song
- University College London, Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery & Interventional Science, 9th floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
| | - Liam Good
- Royal Veterinary College, Department of Pathobiology and Population Sciences, 4 Royal College Street, London NW1 0TU, UK.
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Zhou J, Ma Z, Hong X, Wu HM, Ma SY, Li Y, Chen DJ, Yu HY, Huang XJ. Top-Down Strategy of Implantable Biosensor Using Adaptable, Porous Hollow Fibrous Membrane. ACS Sens 2019; 4:931-937. [PMID: 30950605 DOI: 10.1021/acssensors.9b00035] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fabrication of an outer membrane is crucial for an implantable biosensor to enhance the long-term stability and accuracy of sensors. Herein, an adaptable, controllable, porous outer membrane for an implantable biosensor was fabricated using a "top-down" method, allowing maximum retention of enzyme activity and fine control over membrane microstructure. Polysulfone hollow fibrous membranes with different pore sizes and porosities were used as a base membrane. Chitosan (CH) and sodium alginate (SA) were self-assembled on the inner surface of PSfHM to construct a biocompatible and conductive interface between PSfHM and the electrode. In vitro and in vivo experiments were used to evaluate the performance of implantable glucose biosensors with PSfHM and CH/SA modified PSfHM (PSfHM-CH/SA). The glucose biosensor with PSfHM-CH/SA exhibited a more stable output current than bare sensors and a quick response time (<50 s). The glucose biosensor with PSfHM-CH/SA linear sensing range was between 0 and 22 mM ( R2 = 0.9905), and relative sensitivity remained at >87% within 7 days and >76% within 15 days. Furthermore, response currents recorded by implanted sensors closely followed the blood glucose trend from the tail vein blood during in vivo experiments.
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Affiliation(s)
- Jin Zhou
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
- Department of Material and Chemical Engineering, Chizhou University, Chizhou 247000, China
| | - Zhen Ma
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiao Hong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hui-Min Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Shu-Yan Ma
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yang Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Da-Jing Chen
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China
| | - Hai-Yin Yu
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
| | - Xiao-Jun Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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16
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Li X, Wang C, Yang S, Liu P, Zhang B. Electrospun PCL/mupirocin and chitosan/lidocaine hydrochloride multifunctional double layer nanofibrous scaffolds for wound dressing applications. Int J Nanomedicine 2018; 13:5287-5299. [PMID: 30237715 PMCID: PMC6136417 DOI: 10.2147/ijn.s177256] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background An ideal wound dressing should exhibit good biocompatibility, minimize pain and infection, absorb excess exudates, and maintain a moist environment. However, few clinical products meet all these needs. Therefore, the aim of this study was to fabricate a multifunctional double layer nanofibrous scaffolds (DLS) as a potential material for wound dressing. Materials and methods The scaffold was formed from mupirocin and lidocaine hydrochloride homogeneously incorporated into polycaprolactone as the first layer of scaffolds and chitosan as the second layer of scaffolds nanofibers through electrospinning. The fabricated nanofibrous scaffolds were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, and measurement of swelling ratio, contact angle, drug release, and mechanical properties. Furthermore, antibacterial assessment, live/dead cell assays, and MTT assays were used to investigate the antibacterial activity and cytotoxicity of the nanofibrous scaffolds. Results The morphology of the nanofibrous scaffolds was studied by scanning electron microscopy, showing successful nanofibrous scaffolds. Fourier transform infrared spectroscopy demonstrated the successful incorporation of the material used to produce the produced nanofibrous scaffolds. Thermal studies with thermogravimetric analysis and differential scanning calorimetry indicated that the DLS had high thermal stability. The DLS also showed good in vitro characteristics in terms of improved swelling ratio and contact angle. The mechanical results revealed that the DLS had an improved tensile strength of 3.88 MPa compared with the second layer of scaffold (2.81 MPa). The release of drugs from the scaffold showed different profiles for the two drugs. Lidocaine hydrochlo ride exhibited an initial burst release (66% release within an hour); however, mupirocin exhibited only a 5% release. Furthermore, the DLS nanofibers displayed highly effective antibacterial activities against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa and were nontoxic to fibroblasts. Conclusion The fabricated DLS exhibited excellent hydrophilicity, cytocompatibility, sustained drug release, and antibacterial activity, which are favorable qualities for its use as a multifunctional material for wound dressing applications.
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Affiliation(s)
- Xiaoming Li
- Department 4, State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China,
| | - Chao Wang
- Department of Pediatric Intensive Care Unit, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China
| | - Shuang Yang
- Key Laboratory of Biorheological Science and Technology, Research Center of Bioinspired Materials Science and Engineering, College of Bioengineering, Chongqing University, Chongqing 400030, China
| | - Ping Liu
- Department 4, State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China,
| | - Bo Zhang
- Department 4, State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China,
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17
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Burugapalli K, Wijesuriya S, Wang N, Song W. Biomimetic electrospun coatings increase the in vivo sensitivity of implantable glucose biosensors. J Biomed Mater Res A 2017; 106:1072-1081. [PMID: 29226509 PMCID: PMC5826864 DOI: 10.1002/jbm.a.36308] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 10/13/2017] [Accepted: 12/05/2017] [Indexed: 12/05/2022]
Abstract
In vivo tissue responses and functional efficacy of electrospun membranes based on polyurethane (PU) and gelatin (GE) as biomimetic coatings for implantable glucose biosensors was investigated in a rat subcutaneous implantation model. Three electrospun membranes with optimized fiber diameters, pore sizes, and permeability, both single PU and coaxial PU‐GE fibers and a solvent cast PU film were implanted in rats to evaluate tissue responses. For functional efficacy testing, four sensor variants coated with the above mentioned electrospun membranes as mass‐transport limiting and outermost biomimetic coatings were implanted in rats. The electrospun PU membranes had micron sized pores that were not permeable to host cells when implanted in the body. However, PU‐GE coaxial fiber membranes, having similar sized pores, were infiltrated with fibroblasts that deposited collagen in the membrane's pores. Such tissue response prevented the formation of dense fibrous capsule around the sensor coated with the PU‐GE coaxial fiber membranes, which helped improve the in vivo sensitivity for at least 3 weeks compared to the traditional sensors in rat subcutaneous tissue. Furthermore, the better in vitro sensor's sensitivity due to electrospun PU as the mass‐transport limiting membrane translated to better in vivo sensitivity. Thus, this study showed that electrospun membranes can play an important role in realizing long in vivo sensing lifetime of implantable glucose biosensors. © 2017 The Authors Journal of Biomedical Materials Research Part A Published by Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1072–1081, 2018.
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Affiliation(s)
- Krishna Burugapalli
- Biomedical Engineering Theme, Institute for Environment, Health and Societies, Brunel University London, Uxbridge, UB8 3PH, United Kingdom.,Department of Mechanical, Aerospace and Civil Engineering, College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, UB8 3PH, United Kingdom
| | - Shavini Wijesuriya
- Biomedical Engineering Theme, Institute for Environment, Health and Societies, Brunel University London, Uxbridge, UB8 3PH, United Kingdom.,Department of Mechanical, Aerospace and Civil Engineering, College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, UB8 3PH, United Kingdom
| | - Ning Wang
- Biomedical Engineering Theme, Institute for Environment, Health and Societies, Brunel University London, Uxbridge, UB8 3PH, United Kingdom.,Department of Mechanical, Aerospace and Civil Engineering, College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, UB8 3PH, United Kingdom
| | - Wenhui Song
- UCL Centre for Nanotechnology and Regenerative Medicine, Division of Surgery and Interventional Science, University College London, London, NW3 2PF, United Kingdom
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18
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Klueh U, Ludzinska I, Czajkowski C, Qiao Y, Kreutzer DL. Crosslinked basement membrane-based coatings enhance glucose sensor function and continuous glucose monitoring in vivo. J Biomed Mater Res A 2017; 106:7-16. [PMID: 28875571 DOI: 10.1002/jbm.a.36206] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/16/2017] [Accepted: 08/30/2017] [Indexed: 01/17/2023]
Abstract
Overcoming sensor-induced tissue reactions is an essential element of achieving successful continuous glucose monitoring (CGM) in the management of diabetes, particularly when used in closed loop technology. Recently, we demonstrated that basement membrane (BM)-based glucose sensor coatings significantly reduced tissue reactions at sites of device implantation. However, the biocompatible BM-based biohydrogel sensor coating rapidly degraded over a less than a 3-week period, which effectively eliminated the protective sensor coating. In an effort to increase the stability and effectiveness of the BM coating, we evaluated the impact of crosslinking BM utilizing glutaraldehyde as a crosslinking agent, designated as X-Cultrex. Sensor performance (nonrecalibrated) was evaluated for the impact of these X-Cultrex coatings in vitro and in vivo. Sensor performance was assessed over a 28-day time period in a murine CGM model and expressed as mean absolute relative difference (MARD) values. Tissue reactivity of Cultrex-coated, X-Cultrex-coated, and uncoated glucose sensors was evaluated over a 28-day time period in vivo using standard histological techniques. These studies demonstrated that X-Cultrex-based sensor coatings had no effect on glucose sensor function in vitro. In vivo, glucose sensor performance was significantly enhanced following X-Cultrex coating throughout the 28-day study. Histological evaluations of X-Cultrex-treated sensors demonstrated significantly less tissue reactivity when compared to uncoated sensors. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 7-16, 2018.
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Affiliation(s)
- Ulrike Klueh
- Department of Biomedical Engineering, School of Engineering, Wayne State University, Detroit, Michigan, 48202.,Department of Surgery, School of Medicine, University of Connecticut, Farmington, Connecticut, 06030
| | - Izabela Ludzinska
- Department of Surgery, School of Medicine, University of Connecticut, Farmington, Connecticut, 06030
| | - Caroline Czajkowski
- Department of Surgery, School of Medicine, University of Connecticut, Farmington, Connecticut, 06030
| | - Yi Qiao
- Department of Surgery, School of Medicine, University of Connecticut, Farmington, Connecticut, 06030
| | - Donald L Kreutzer
- Department of Surgery, School of Medicine, University of Connecticut, Farmington, Connecticut, 06030
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19
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Babitha S, Rachita L, Karthikeyan K, Shoba E, Janani I, Poornima B, Purna Sai K. Electrospun protein nanofibers in healthcare: A review. Int J Pharm 2017; 523:52-90. [PMID: 28286080 DOI: 10.1016/j.ijpharm.2017.03.013] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 03/06/2017] [Accepted: 03/07/2017] [Indexed: 12/11/2022]
Abstract
Electrospun nanofibers are being utilized for a wide range of healthcare applications. A plethora of natural and synthetic polymers are exploited for their ability to be electrospun and replace the complex habitat provided by the extracellular matrix for the cells. The fabrication of nanofibers can be tuned to act as a multicarrier system to deliver drugs, growth factors and health supplements etc. in a sustained manner. Owing to its pliability, nanofibers reached its heights in tissue engineering and drug delivery applications. This review mainly focuses on various standardized parameters and optimized blending ratios for animal and plant proteins to yield fine, continuous nanofibers for effective utilization in various healthcare applications.
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Affiliation(s)
- S Babitha
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Lakra Rachita
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - K Karthikeyan
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Ekambaram Shoba
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Indrakumar Janani
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Balan Poornima
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - K Purna Sai
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India.
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20
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Sfakis L, Sharikova A, Tuschel D, Costa FX, Larsen M, Khmaladze A, Castracane J. Core/shell nanofiber characterization by Raman scanning microscopy. BIOMEDICAL OPTICS EXPRESS 2017; 8:1025-1035. [PMID: 28271000 PMCID: PMC5330587 DOI: 10.1364/boe.8.001025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/16/2017] [Accepted: 01/16/2017] [Indexed: 06/06/2023]
Abstract
Core/shell nanofibers are becoming increasingly popular for applications in tissue engineering. Nanofibers alone provide surface topography and increased surface area that promote cellular attachment; however, core/shell nanofibers provide the versatility of incorporating two materials with different properties into one. Such synthetic materials can provide the mechanical and degradation properties required to make a construct that mimics in vivo tissue. Many variations of these fibers can be produced. The challenge lies in the ability to characterize and quantify these nanofibers post fabrication. We developed a non-invasive method for the composition characterization and quantification at the nanoscale level of fibers using Confocal Raman microscopy. The biodegradable/biocompatible nanofibers, Poly (glycerol-sebacate)/Poly (lactic-co-glycolic) (PGS/PLGA), were characterized as a part of a fiber scaffold to quickly and efficiently analyze the quality of the substrate used for tissue engineering.
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Affiliation(s)
- Lauren Sfakis
- SUNY Polytechnic Institute, Nanobioscience Constellation, Albany NY, USA
| | - Anna Sharikova
- University at Albany, SUNY, Department of Physics, Albany, NY, USA
| | - David Tuschel
- HORIBA Scientific, 3880 Park Avenue, Edison, NJ, USA
| | - Felipe Xavier Costa
- University at Albany, SUNY, Department of Physics, Albany, NY, USA; Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil
| | - Melinda Larsen
- University at Albany, SUNY, Department of Biological Sciences, Albany, NY, USA
| | - Alexander Khmaladze
- University at Albany, SUNY, Department of Physics, Albany, NY, USA; Dr. Alexander Khmaladze
| | - James Castracane
- SUNY Polytechnic Institute, Nanobioscience Constellation, Albany NY, USA; Dr. James Castracane
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21
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Khalf A, Madihally SV. Recent advances in multiaxial electrospinning for drug delivery. Eur J Pharm Biopharm 2016; 112:1-17. [PMID: 27865991 DOI: 10.1016/j.ejpb.2016.11.010] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/06/2016] [Accepted: 11/01/2016] [Indexed: 12/18/2022]
Abstract
Electrospun fibers have seen an insurgence in biomedical applications due to their unique characteristics. Coaxial and triaxial electrospinning techniques have added new impetus via fabrication of multilayered nano and micro-size fibers. These techniques offer the possibility of forming fibers with features such as blending, reinforced core, porous and hollow structure. The unique fabrication process can be used to tailor the mechanical properties, biological properties and release of various factors, which can potentially be useful in various controlled drug delivery applications. Harvesting these advantages, various polymers and their combinations have been explored in a number of drug delivery and tissue regeneration applications. New advances have shown the requirement of drug-polymer compatibility in addition to drug-solvent compatibility. We summarize recent findings using both hydrophilic and hydrophobic (or lipophilic) drugs in hydrophobic or hydrophilic polymers on release behavior. We also describe the fundamental forces involved during the electrospinning process providing insight to the factors to be considered to form fibers. Also, various modeling efforts on the drug release profiles are summarized. In addition new developments in the immune response to the electrospun fibers, and advances in scale-up issues needed for industrial size manufacturing.
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Affiliation(s)
- Abdurizzagh Khalf
- School of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States.
| | - Sundararajan V Madihally
- School of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States.
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22
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Chemically Roughened Solid Silver: A Simple, Robust and Broadband SERS Substrate. SENSORS 2016; 16:s16101742. [PMID: 27775581 PMCID: PMC5087527 DOI: 10.3390/s16101742] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/09/2016] [Accepted: 10/14/2016] [Indexed: 11/16/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) substrates manufactured using complex nano-patterning techniques have become the norm. However, their cost of manufacture makes them unaffordable to incorporate into most biosensors. The technique shown in this paper is low-cost, reliable and highly sensitive. Chemical etching of solid Ag metal was used to produce simple, yet robust SERS substrates with broadband characteristics. Etching with ammonium hydroxide (NH₄OH) and nitric acid (HNO₃) helped obtain roughened Ag SERS substrates. Scanning electron microscopy (SEM) and interferometry were used to visualize and quantify surface roughness. Flattened Ag wires had inherent, but non-uniform roughness having peaks and valleys in the microscale. NH₄OH treatment removed dirt and smoothened the surface, while HNO₃ treatment produced a flake-like morphology with visibly more surface roughness features on Ag metal. SERS efficacy was tested using 4-methylbenzenethiol (MBT). The best SERS enhancement for 1 mM MBT was observed for Ag metal etched for 30 s in NH₄OH followed by 10 s in HNO₃. Further, MBT could be quantified with detection limits of 1 pM and 100 µM, respectively, using 514 nm and 1064 nm Raman spectrometers. Thus, a rapid and less energy intensive method for producing solid Ag SERS substrate and its efficacy in analyte sensing was demonstrated.
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Zhou FL, Parker GJ, Eichhorn SJ, Hubbard Cristinacce PL. Production and cross-sectional characterization of aligned co-electrospun hollow microfibrous bulk assemblies. MATERIALS CHARACTERIZATION 2015; 109:25-35. [PMID: 26702249 PMCID: PMC4659418 DOI: 10.1016/j.matchar.2015.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 09/13/2015] [Indexed: 05/05/2023]
Abstract
The development of co-electrospun (co-ES) hollow microfibrous assemblies of an appreciable thickness is critical for many practical applications, including filtration membranes and tissue-mimicking scaffolds. In this study, thick uniaxially aligned hollow microfibrous assemblies forming fiber bundles and strips were prepared by co-ES of polycaprolactone (PCL) and polyethylene oxide (PEO) as shell and core materials, respectively. Hollow microfiber bundles were deposited on a fixed rotating disc, which resulted in non-controllable cross-sectional shapes on a macroscopic scale. In comparison, fiber strips were produced with tuneable thickness and width by additionally employing an x-y translation stage in co-ES. Scanning electron microscopy (SEM) images of cross-sections of fiber assemblies were analyzed to investigate the effects of production time (from 0.5 h to 12 h), core flow rate (from 0.8 mL/h to 2.0 mL/h) and/or translation speed (from 0.2 mm/s to 5 mm/s) on the pores and porosity. We observed significant changes in pore size and shape with core flow rate but the influence of production time varied; five strips produced under the same conditions had reasonably good size and porosity reproducibility; pore sizes didn't vary significantly from strip bottom to surface, although the porosity gradually decreased and then returned to the initial level.
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Affiliation(s)
- Feng-Lei Zhou
- Centre for Imaging Sciences, The University of Manchester, Manchester M13 9PT, UK
- The School of Materials, The University of Manchester, Manchester M13 9PL, UK
- CRUK-EPSRC Cancer Imaging Centre in Cambridge and Manchester, UK
| | - Geoff J.M. Parker
- Centre for Imaging Sciences, The University of Manchester, Manchester M13 9PT, UK
- CRUK-EPSRC Cancer Imaging Centre in Cambridge and Manchester, UK
| | - Stephen J. Eichhorn
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - Penny L. Hubbard Cristinacce
- Centre for Imaging Sciences, The University of Manchester, Manchester M13 9PT, UK
- School of Psychological Sciences, University of Manchester, Manchester M13 9PT, UK
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Filip D, Macocinschi D, Vlad S, Lisa G, Cristea M, Zaltariov MF. Structure-property relationship of sodium deoxycholate based poly(ester ether)urethane ionomers for biomedical applications. J Appl Polym Sci 2015. [DOI: 10.1002/app.42921] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daniela Filip
- Petru Poni Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41 A Iasi 700487 Romania
| | - Doina Macocinschi
- Petru Poni Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41 A Iasi 700487 Romania
| | - Stelian Vlad
- Petru Poni Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41 A Iasi 700487 Romania
| | - Gabriela Lisa
- Chemical Engineering Department, Faculty of Chemical Engineering and Environmental Protection; Gheorghe Asachi Technical University; Bulevardul Dimitrie Mangeron 73 Iasi 700050 Romania
| | - Mariana Cristea
- Petru Poni Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41 A Iasi 700487 Romania
| | - Mirela F. Zaltariov
- Petru Poni Institute of Macromolecular Chemistry; Aleea Grigore Ghica Voda 41 A Iasi 700487 Romania
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25
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Liu W, Wu Z, Wang Y, Tang Z, Du J, Yuan L, Li D, Chen H. Controlling the biointerface of electrospun mats for clot lysis: an engineered tissue plasminogen activator link to a lysine-functionalized surface. J Mater Chem B 2014; 2:4272-4279. [DOI: 10.1039/c4tb00488d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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