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Zhang X, Peng W, Chen H, Xing H. BnAP2-12 overexpression delays ramie flowering: evidence from AP2/ERF gene expression. FRONTIERS IN PLANT SCIENCE 2024; 15:1367837. [PMID: 38590749 PMCID: PMC10999622 DOI: 10.3389/fpls.2024.1367837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/12/2024] [Indexed: 04/10/2024]
Abstract
Introduction The APETALA2/ethylene response factor (AP2/ERF) superfamily plays a significant role in regulating plant gene expression in response to growth and development. To date, there have been no studies into whether the ramie AP2/ERF genes are involved in the regulation of flower development. Methods Here, 84 BnAP2/ERF members were identified from the ramie genome database, and various bioinformatics data on the AP2/ERF gene family, structure, replication, promoters and regulatory networks were analysed. BnAP2-12 was transferred into Arabidopsis through the flower-dipping method. Results Phylogenetic analysis classified the 84 BnAP2/ERF members into four subfamilies: AP2 (18), RAV (3), ERF (42), and DREB (21). The functional domain analysis of genes revealed 10 conserved motifs. Genetic mapping localised the 84 members on 14 chromosomes, among which chromosomes 1, 3, 5, and 8 had more members. Collinearity analysis revealed that 43.37% possibly resulted from replication events during the evolution of the ramie genome. Promoter sequence analysis identified classified cis-acting elements associated with plant growth and development, and responses to stress, hormones, and light. Transcriptomic comparison identified 3,635 differentially expressed genes (DEGs) between male and female flowers (1,803 and 1,832 upregulated and downregulated genes, respectively). Kyoto Encyclopaedia of Genes and Genomes pathway analysis categorised DEGs involved in metabolic pathways and biosynthesis of secondary metabolites. Gene Ontology enrichment analysis further identified enriched genes associated with pollen and female gamete formations. Of the 84 BnAP2/ERFs genes, 22 and 8 upregulated and downregulated genes, respectively, were present in female flowers. Co-expression network analysis identified AP2/ERF members associated with flower development, including BnAP2-12. Subcellular localisation analysis showed that the BnAP2-12 protein is localised in the nucleus and cell membrane. Overexpression BnAP2-12 delayed the flowering time of Arabidopsis thaliana. Conclusion These findings provide insights into the mechanism of ramie flower development.
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Affiliation(s)
- Xiaoyang Zhang
- Agricultural College of Hunan Agricultural University, Changsha, China
- Ramie Research Institute of Hunan Agricultural University, Changsha, China
| | - Wenxian Peng
- Ramie Research Institute of Hunan Agricultural University, Changsha, China
- Changsha Tobacco Company, Ningxiang, China
| | - Hao Chen
- Agricultural College of Hunan Agricultural University, Changsha, China
| | - Hucheng Xing
- Agricultural College of Hunan Agricultural University, Changsha, China
- Ramie Research Institute of Hunan Agricultural University, Changsha, China
- Hunan Key Laboratory of Germplasm Resources Innovation and Resource Utilization Crop Breeding Center, Changsha, China
- Hunan Provincial Engineering Technology Research Center of Grass Crop Germplasm Innovation and Utilization, Changsha, China
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Li Y, Meng Q, Chen S, Ling P, Kuss MA, Duan B, Wu S. Advances, challenges, and prospects for surgical suture materials. Acta Biomater 2023; 168:78-112. [PMID: 37516417 DOI: 10.1016/j.actbio.2023.07.041] [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: 03/20/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
As one of the long-established and necessary medical devices, surgical sutures play an essentially important role in the closing and healing of damaged tissues and organs postoperatively. The recent advances in multiple disciplines, like materials science, engineering technology, and biomedicine, have facilitated the generation of various innovative surgical sutures with humanization and multi-functionalization. For instance, the application of numerous absorbable materials is assuredly a marvelous progression in terms of surgical sutures. Moreover, some fantastic results from recent laboratory research cannot be ignored either, ranging from the fiber generation to the suture structure, as well as the suture modification, functionalization, and even intellectualization. In this review, the suture materials, including natural or synthetic polymers, absorbable or non-absorbable polymers, and metal materials, were first introduced, and then their advantages and disadvantages were summarized. Then we introduced and discussed various fiber fabrication strategies for the production of surgical sutures. Noticeably, advanced nanofiber generation strategies were highlighted. This review further summarized a wide and diverse variety of suture structures and further discussed their different features. After that, we covered the advanced design and development of surgical sutures with multiple functionalizations, which mainly included surface coating technologies and direct drug-loading technologies. Meanwhile, the review highlighted some smart and intelligent sutures that can monitor the wound status in a real-time manner and provide on-demand therapies accordingly. Furthermore, some representative commercial sutures were also introduced and summarized. At the end of this review, we discussed the challenges and future prospects in the field of surgical sutures in depth. This review aims to provide a meaningful reference and guidance for the future design and fabrication of innovative surgical sutures. STATEMENT OF SIGNIFICANCE: This review article introduces the recent advances of surgical sutures, including material selection, fiber morphology, suture structure and construction, as well as suture modification, functionalization, and even intellectualization. Importantly, some innovative strategies for the construction of multifunctional sutures with predetermined biological properties are highlighted. Moreover, some important commercial suture products are systematically summarized and compared. This review also discusses the challenges and future prospects of advanced sutures in a deep manner. In all, this review is expected to arouse great interest from a broad group of readers in the fields of multifunctional biomaterials and regenerative medicine.
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Affiliation(s)
- Yiran Li
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Qi Meng
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Shaojuan Chen
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Peixue Ling
- Shandong Academy of Pharmaceutical Science, Jinan, 250101, China
| | - Mitchell A Kuss
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Shaohua Wu
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China; Shandong Academy of Pharmaceutical Science, Jinan, 250101, China.
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Zamora-Mendoza L, Gushque F, Yanez S, Jara N, Álvarez-Barreto JF, Zamora-Ledezma C, Dahoumane SA, Alexis F. Plant Fibers as Composite Reinforcements for Biomedical Applications. Bioengineering (Basel) 2023; 10:804. [PMID: 37508831 PMCID: PMC10376539 DOI: 10.3390/bioengineering10070804] [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: 05/30/2023] [Revised: 06/24/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023] Open
Abstract
Plant fibers possess high strength, high fracture toughness and elasticity, and have proven useful because of their diversity, versatility, renewability, and sustainability. For biomedical applications, these natural fibers have been used as reinforcement for biocomposites to infer these hybrid biomaterials mechanical characteristics, such as stiffness, strength, and durability. The reinforced hybrid composites have been tested in structural and semi-structural biodevices for potential applications in orthopedics, prosthesis, tissue engineering, and wound dressings. This review introduces plant fibers, their properties and factors impacting them, in addition to their applications. Then, it discusses different methodologies used to prepare hybrid composites based on these widespread, renewable fibers and the unique properties that the obtained biomaterials possess. It also examines several examples of hybrid composites and their biomedical applications. Finally, the findings are summed up and some thoughts for future developments are provided. Overall, the focus of the present review lies in analyzing the design, requirements, and performance, and future developments of hybrid composites based on plant fibers.
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Affiliation(s)
- Lizbeth Zamora-Mendoza
- Departamento de Ingeniería Química, Colegio de Ciencias e Ingenierías, Instituto de Microbiología, Institute for Energy and Materials, Universidad San Francisco de Quito USFQ, Quito 170901, Ecuador
| | - Fernando Gushque
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Sabrina Yanez
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Nicole Jara
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - José F Álvarez-Barreto
- Departamento de Ingeniería Química, Colegio de Ciencias e Ingenierías, Instituto de Microbiología, Institute for Energy and Materials, Universidad San Francisco de Quito USFQ, Quito 170901, Ecuador
| | - Camilo Zamora-Ledezma
- Green and Innovative Technologies for Food, Environment and Bioengineering Research Group (FEnBeT), Faculty of Pharmacy and Nutrition, UCAM-Universidad Católica de Murcia, Avda, Los Jerónimos 135, Guadalupe de Maciascoque, 30107 Murcia, Spain
| | - Si Amar Dahoumane
- Department of Chemistry and Biochemistry, Université de Moncton, 18 Avenue Antonine-Maillet, Moncton, NB E1A 3E9, Canada
| | - Frank Alexis
- Departamento de Ingeniería Química, Colegio de Ciencias e Ingenierías, Instituto de Microbiología, Institute for Energy and Materials, Universidad San Francisco de Quito USFQ, Quito 170901, Ecuador
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Eco-Friendly Tannin-Based Non-Isocyanate Polyurethane Resins for the Modification of Ramie (Boehmeria nivea L.) Fibers. Polymers (Basel) 2023; 15:polym15061492. [PMID: 36987272 PMCID: PMC10059955 DOI: 10.3390/polym15061492] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
This study aimed to develop tannin-based non-isocyanate polyurethane (tannin-Bio-NIPU) and tannin-based polyurethane (tannin-Bio-PU) resins for the impregnation of ramie fibers (Boehmeria nivea L.) and investigate their mechanical and thermal properties. The reaction between the tannin extract, dimethyl carbonate, and hexamethylene diamine produced the tannin-Bio-NIPU resin, while the tannin-Bio-PU was made with polymeric diphenylmethane diisocyanate (pMDI). Two types of ramie fiber were used: natural ramie without pre-treatment (RN) and with pre-treatment (RH). They were impregnated in a vacuum chamber with tannin-based Bio-PU resins for 60 min at 25 °C under 50 kPa. The yield of the tannin extract produced was 26.43 ± 1.36%. Fourier-transform infrared (FTIR) spectroscopy showed that both resin types produced urethane (-NCO) groups. The viscosity and cohesion strength of tannin-Bio-NIPU (20.35 mPa·s and 5.08 Pa) were lower than those of tannin-Bio-PU (42.70 mPa·s and 10.67 Pa). The RN fiber type (18.9% residue) was more thermally stable than RH (7.3% residue). The impregnation process with both resins could improve the ramie fibers’ thermal stability and mechanical strength. The highest thermal stability was found in RN impregnated with the tannin-Bio-PU resin (30.5% residue). The highest tensile strength was determined in the tannin-Bio-NIPU RN of 451.3 MPa. The tannin-Bio-PU resin gave the highest MOE for both fiber types (RN of 13.5 GPa and RH of 11.7 GPa) compared to the tannin-Bio-NIPU resin.
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Zamora-Mendoza L, Guamba E, Miño K, Romero MP, Levoyer A, Alvarez-Barreto JF, Machado A, Alexis F. Antimicrobial Properties of Plant Fibers. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227999. [PMID: 36432099 PMCID: PMC9699224 DOI: 10.3390/molecules27227999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/09/2022] [Accepted: 11/12/2022] [Indexed: 11/19/2022]
Abstract
Healthcare-associated infections (HAI), or nosocomial infections, are a global health and economic problem in developed and developing countries, particularly for immunocompromised patients in their intensive care units (ICUs) and surgical site hospital areas. Recurrent pathogens in HAIs prevail over antibiotic-resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa. For this reason, natural antibacterial mechanisms are a viable alternative for HAI treatment. Natural fibers can inhibit bacterial growth, which can be considered a great advantage in these applications. Moreover, these fibers have been reported to be biocompatible and biodegradable, essential features for biomedical materials to avoid complications due to infections and significant immune responses. Consequently, tissue engineering, medical textiles, orthopedics, and dental implants, as well as cosmetics, are fields currently expanding the use of plant fibers. In this review, we will discuss the source of natural fibers with antimicrobial properties, antimicrobial mechanisms, and their biomedical applications.
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Affiliation(s)
- Lizbeth Zamora-Mendoza
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Esteban Guamba
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Karla Miño
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Maria Paula Romero
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Anghy Levoyer
- Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito (USFQ), Departamento de Ingeniería Química, Quito 170901, Ecuador
| | - José F. Alvarez-Barreto
- Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito (USFQ), Departamento de Ingeniería Química, Quito 170901, Ecuador
| | - António Machado
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Instituto de Microbiología, Universidad San Francisco de Quito (USFQ), Laboratorio de Bacteriología, Quito 170901, Ecuador
| | - Frank Alexis
- Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito (USFQ), Departamento de Ingeniería Química, Quito 170901, Ecuador
- Correspondence:
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Lubis MAR, Handika SO, Sari RK, Iswanto AH, Antov P, Kristak L, Lee SH, Pizzi A. Modification of Ramie Fiber via Impregnation with Low Viscosity Bio-Polyurethane Resins Derived from Lignin. Polymers (Basel) 2022; 14:polym14112165. [PMID: 35683838 PMCID: PMC9182894 DOI: 10.3390/polym14112165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study was to prepare low-viscosity lignin-based polyurethane (LPU) resins for the modification of ramie (Boehmeria nivea (L.) Gaudich) fiber via impregnation to improve the fiber’s thermal and mechanical properties. Low-viscosity LPU resins were prepared by dissolving lignin in 20% NaOH and then adding polymeric 4,4-methane diphenyl diisocyanate (pMDI, 31% NCO) with a mole ratio of 0.3 NCO/OH. Ramie fiber was impregnated with LPU in a vacuum chamber equipped with a two-stage vacuum pump. Several techniques such as Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry, thermogravimetric analysis, pyrolysis-gas chromatography–mass spectroscopy, field emission-scanning electron microscopy coupled with energy dispersive X-ray (EDX), and a universal testing machine were used to characterize lignin, LPU, and ramie fiber. The LPU resins had low viscosity ranging from 77 to 317 mPa·s−1. According to FTIR and EDX analysis, urethane bonds were formed during the synthesis of LPU resins and after impregnation into ramie fibers. After impregnation, the reaction between the LPU’s urethane group and the hydroxy group of ramie fiber increased thermal stability by an average of 6% and mechanical properties by an average of 100% compared to the untreated ramie fiber. The highest thermal stability and tensile strength were obtained at ramie impregnated with LPU-ethyl acetate for 30 min, with a residual weight of 22% and tensile strength of 648.7 MPa. This study showed that impregnation with LPU resins can enhance the thermal and mechanical properties of fibers and increase their wider industrial utilization in value-added applications.
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Affiliation(s)
- Muhammad Adly Rahandi Lubis
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Cibinong 16911, Indonesia
- Research Collaboration Center for Biomass and Biorefinery between BRIN and Universitas Padjadjaran, National Research and Innovation Agency, Cibinong 16911, Indonesia
- Correspondence: (M.A.R.L.); (R.K.S.); (A.H.I.); (L.K.)
| | - Sucia Okta Handika
- Department of Forest Products, Faculty of Forestry and Environment, IPB University, Bogor 16680, Indonesia;
| | - Rita Kartika Sari
- Department of Forest Products, Faculty of Forestry and Environment, IPB University, Bogor 16680, Indonesia;
- Correspondence: (M.A.R.L.); (R.K.S.); (A.H.I.); (L.K.)
| | - Apri Heri Iswanto
- Department of Forest Product, Faculty of Forestry, Universitas Sumatera Utara, Medan 20155, Indonesia
- JATI—Sumatran Forestry Analysis Study Center, Universitas Sumatera Utara, Medan 20155, Indonesia
- Correspondence: (M.A.R.L.); (R.K.S.); (A.H.I.); (L.K.)
| | - Petar Antov
- Faculty of Forest Industry, University of Forestry, 1797 Sofia, Bulgaria;
| | - Lubos Kristak
- Faculty of Wood Sciences and Technology, Technical University in Zvolen, 96001 Zvolen, Slovakia
- Correspondence: (M.A.R.L.); (R.K.S.); (A.H.I.); (L.K.)
| | - Seng Hua Lee
- Laboratory of Biopolymer and Derivatives, Institute of Tropical Forestry and Forest Product, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Antonio Pizzi
- LERMAB-ENSTIB, University of Lorraine, 88000 Epinal, France;
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Suriaman I, Hendrarsakti J, Mardiyati Y, Pasek AD. Synthesis and Characterization of Air Filter Media Made from Cellulosic Ramie Fiber (Boehmeria nivea). CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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de la Harpe KM, Marimuthu T, Kondiah PPD, Kumar P, Ubanako P, Choonara YE. Synthesis of a novel monofilament bioabsorbable suture for biomedical applications. J Biomed Mater Res B Appl Biomater 2022; 110:2189-2210. [PMID: 35373911 PMCID: PMC9546231 DOI: 10.1002/jbm.b.35069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 11/07/2022]
Abstract
In this research, a novel bioabsorbable suture that is, monofilament and capable of localized drug delivery, was developed from a combination of natural biopolymers that where not previously applied for this purpose. The optimized suture formulation comprised of sodium alginate (6% wt/vol), pectin (0.1% wt/vol), and gelatin (3% wt/vol), in the presence of glycerol (4% vol/vol) which served as a plasticizer. The monofilament bioabsorbable sutures where synthesized via in situ ionic crosslinking in a barium chloride solution (2% wt/vol). The resulting suture was characterized in terms of mechanical properties, morphology, swelling, degradation, drug release, and biocompatibility, in addition to Fourier-transform infrared (FTIR) spectroscopy, Powder X-ray Diffraction (PXRD) and Differential Scanning Calorimetry (DSC) analysis. The drug loaded and non-drug loaded sutures had a maximum breaking strength of 4.18 and 4.08 N, in the straight configuration and 2.44 N and 2.59 N in the knot configuration, respectively. FTIR spectrum of crosslinked sutures depicted Δ9 cm-1 downward shift for the carboxyl stretching band which was indicative of ionic interactions between barium ions and sodium alginate. In vitro analysis revealed continued drug release for 7 days and gradual degradation by means of surface erosion, which was completed by day 28. Biocompatibility studies revealed excellent hemocompatibility and no cytotoxicity. These results suggest that the newly developed bioabsorbable suture meets the basic requirements of a suture material and provides a viable alternative to the synthetic polymer sutures that are currently on the market.
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Affiliation(s)
- Kara M de la Harpe
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Thashree Marimuthu
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Pierre P D Kondiah
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Philemon Ubanako
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
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Ji M, Li J, Li F, Wang X, Man J, Li J, Zhang C, Peng S. A biodegradable chitosan-based composite film reinforced by ramie fibre and lignin for food packaging. Carbohydr Polym 2022; 281:119078. [DOI: 10.1016/j.carbpol.2021.119078] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 12/26/2021] [Accepted: 12/28/2021] [Indexed: 11/02/2022]
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Tan Y, Rajoka MSR, Ke Z, Mehwish HM, Deng W, Li J, Qin W, Zhao L, Wu Y. Effect of Squid Cartilage Chitosan Molecular Structure on the Properties of Its Monofilament as an Absorbable Surgical Suture. Polymers (Basel) 2022; 14:polym14071306. [PMID: 35406180 PMCID: PMC9003387 DOI: 10.3390/polym14071306] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 02/05/2023] Open
Abstract
Suture is an important part of surgery, and wounds closing after surgery remains a challenge for postoperative care. Currently, silk, linen fiber, and cotton are available in the market as non-absorbable suture biomaterials. So, there is an urgent need to develop a novel suture with advantageous characteristics compared to the ones available on the market. In present study, a series of ultra-high molecular weight chitosan with different DD and MV were prepared from squid cartilage by alkaline treatment and ultrasonic degradation. The corresponding chitosan monofilaments were prepared by a wet spinning process and were characterized as sutures. The effects of the DD and MV of chitosan on the properties of its monofilament were studied, including surface morphology, mechanical property, swelling ratio, ash content, in vitro enzymatic degradation, and in vitro cytotoxicity. According to the results, AS-85 was chosen to be the best suitable as an absorbable surgical suture, which was spun from squid cartilage chitosan with DD~85% and MV~1.2 × 106. The outcome of the present study might derive tremendous possibilities for the utilization of squid cartilage β-chitin for biomedical applications.
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Affiliation(s)
- Yongxin Tan
- Department of Food Science and Engineering, College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; (Y.T.); (M.S.R.R.); (W.D.); (J.L.); (W.Q.)
| | - Muhammad Shahid Riaz Rajoka
- Department of Food Science and Engineering, College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; (Y.T.); (M.S.R.R.); (W.D.); (J.L.); (W.Q.)
- Department of Pharmacy, Health Science Center, Shenzhen University, Shenzhen 518060, China;
- Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Zekai Ke
- Department of Orthopaedics, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen 518060, China;
| | - Hafiza Mahreen Mehwish
- Department of Pharmacy, Health Science Center, Shenzhen University, Shenzhen 518060, China;
- Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Wenjing Deng
- Department of Food Science and Engineering, College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; (Y.T.); (M.S.R.R.); (W.D.); (J.L.); (W.Q.)
| | - Jiaying Li
- Department of Food Science and Engineering, College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; (Y.T.); (M.S.R.R.); (W.D.); (J.L.); (W.Q.)
| | - Wenqian Qin
- Department of Food Science and Engineering, College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; (Y.T.); (M.S.R.R.); (W.D.); (J.L.); (W.Q.)
| | - Liqing Zhao
- Department of Food Science and Engineering, College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; (Y.T.); (M.S.R.R.); (W.D.); (J.L.); (W.Q.)
- Correspondence: (L.Z.); (Y.W.)
| | - Yiguang Wu
- Department of Food Science and Engineering, College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; (Y.T.); (M.S.R.R.); (W.D.); (J.L.); (W.Q.)
- Correspondence: (L.Z.); (Y.W.)
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Wu H, Guo T, Zhou F, Bu J, Yang S, Dai Z, Teng C, Ouyang H, Wei W. Surface coating prolongs the degradation and maintains the mechanical strength of surgical suture in vivo. Colloids Surf B Biointerfaces 2021; 209:112214. [PMID: 34801978 DOI: 10.1016/j.colsurfb.2021.112214] [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: 03/17/2021] [Revised: 10/09/2021] [Accepted: 11/09/2021] [Indexed: 11/19/2022]
Abstract
Biodegradable and absorbable sutures have been widely used in surgical procedures. However, for the repair of ligament and tendon injures, the biodegradable suture cannot provide sufficient mechanical support to close the wound for a long period of time which is important to completely heal the tissue. Herein, we develop a simple method that makes a surface coating to prolong the degradation of the suture in vivo. Polylactic acid (PLLA) and Polycaprolactone (PCL) were successfully coated to a commercial degradable polydioxanone (PDO) suture in this study, which was confirmed by Fourier transform infrared spectra (FTIR). Scanning electron microscopy (SEM) was used to observe the smooth surface of the coated sutures. Moreover, live/dead assay of human fibroblasts after co-culturing with the modified/unmodified sutures showed fairly good cellular activity. In vivo study demonstrates the degradation properties of sutures were significantly changed after the surface coating. The raw suture exhibited the fastest degradation in 12 weeks, showing significantly decline in mechanical strength. Interestingly, the PCL-coated suture was able to maintain more than 20% of its original tensile strength after 12 weeks' implantation. In addition, in vivo results of PCL-coated sutures also showed less inflammatory cell infiltration and less surface inflammation. These findings indicate the one step suture-coating method could be feasibly for the development of clinical equipment.
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Affiliation(s)
- Hongwei Wu
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Department of Orthopedics, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Tingting Guo
- Health Care Department for Women, The Maternal And Child Health Hospital Of Hunan Province, Changsha 410008, China
| | - Feng Zhou
- Department of Orthopedics, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Jie Bu
- Department of Orthopedics, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Shuo Yang
- Department of Orthopedics, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Zixun Dai
- Department of Orthopedics, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Chong Teng
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu 322000, China.
| | - Hongwei Ouyang
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China.
| | - Wei Wei
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu 322000, China.
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12
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Handika SO, Lubis MAR, Sari RK, Laksana RPB, Antov P, Savov V, Gajtanska M, Iswanto AH. Enhancing Thermal and Mechanical Properties of Ramie Fiber via Impregnation by Lignin-Based Polyurethane Resin. MATERIALS 2021; 14:ma14226850. [PMID: 34832252 PMCID: PMC8617714 DOI: 10.3390/ma14226850] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/04/2021] [Accepted: 11/10/2021] [Indexed: 12/03/2022]
Abstract
In this study, lignin isolated and fractionated from black liquor was used as a pre-polymer to prepare bio-polyurethane (Bio-PU) resin, and the resin was impregnated into ramie fiber (Boehmeria nivea (L.) Gaudich) to improve its thermal and mechanical properties. The isolated lignin was fractionated by one-step fractionation using two different solvents, i.e., methanol (MeOH) and acetone (Ac). Each fractionated lignin was dissolved in NaOH and then reacted with a polymeric 4,4-methane diphenyl diisocyanate (pMDI) polymer at an NCO/OH mole ratio of 0.3. The resulting Bio-PU was then used in the impregnation of ramie fiber. The characterization of lignin, Bio-PU, and ramie fiber was carried out using several techniques, i.e., Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), pyrolysis-gas-chromatography-mass-spectroscopy (Py-GCMS), Micro Confocal Raman spectroscopy, and an evaluation of fiber mechanical properties (modulus of elasticity and tensile strength). Impregnation of Bio-PU into ramie fiber resulted in weight gain ranging from 6% to 15%, and the values increased when extending the impregnation time. The reaction between the NCO group on Bio-PU and the OH group on ramie fiber forms a C=O group of urethane as confirmed by FTIR and Micro Confocal Raman spectroscopies at a wavenumber of 1600 cm−1. Based on the TGA analysis, ramie fiber with lignin-based Bio-PU had better thermal properties than ramie fiber before impregnation with a greater weight residue of 21.7%. The mechanical properties of ramie fiber also increased after impregnation with lignin-based Bio-PU, resulting in a modulus of elasticity of 31 GPa for ramie-L-isolated and a tensile strength of 577 MPa for ramie-L-Ac. The enhanced thermal and mechanical properties of impregnated ramie fiber with lignin-based Bio-PU resins could increase the added value of ramie fiber and enhance its more comprehensive industrial application as a functional material.
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Affiliation(s)
- Sucia Okta Handika
- Department of Forest Products, Faculty of Forestry and Environment, IPB University, Bogor 16680, Indonesia;
| | - Muhammad Adly Rahandi Lubis
- Research Center for Biomaterials, National Research and Innovation Agency, Cibinong 16911, Indonesia;
- Correspondence: (M.A.R.L.); (R.K.S.); (M.G.)
| | - Rita Kartika Sari
- Department of Forest Products, Faculty of Forestry and Environment, IPB University, Bogor 16680, Indonesia;
- Correspondence: (M.A.R.L.); (R.K.S.); (M.G.)
| | | | - Petar Antov
- Faculty of Forest Industry, University of Forestry, 1797 Sofia, Bulgaria; (P.A.); (V.S.)
| | - Viktor Savov
- Faculty of Forest Industry, University of Forestry, 1797 Sofia, Bulgaria; (P.A.); (V.S.)
| | - Milada Gajtanska
- Faculty of Wood Sciences and Technology, Technical University in Zvolen, 96001 Zvolen, Slovakia
- Correspondence: (M.A.R.L.); (R.K.S.); (M.G.)
| | - Apri Heri Iswanto
- Department of Forest Product, Faculty of Forestry, Universitas Sumatera Utara, Medan 20155, Indonesia;
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Mysore THM, Patil AY, Raju GU, Banapurmath NR, Bhovi PM, Afzal A, Alamri S, Saleel CA. Investigation of Mechanical and Physical Properties of Big Sheep Horn as an Alternative Biomaterial for Structural Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4039. [PMID: 34300958 PMCID: PMC8307255 DOI: 10.3390/ma14144039] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/26/2021] [Accepted: 07/02/2021] [Indexed: 01/18/2023]
Abstract
This paper investigates the physical and mechanical properties of bighorns of Deccani breed sheep native from Karnataka, India. The exhaustive work comprises two cases. First, rehydrated (wet) and ambient (dry) conditions, and second, the horn coupons were selected for longitudinal and lateral (transverse) directions. More than seventy-two samples were subjected to a test for physical and mechanical property extraction. Further, twenty-four samples were subjected to physical property testing, which included density and moisture absorption tests. At the same time, mechanical testing included analysis of the stress state dependence with the horn keratin tested under tension, compression, and flexural loading. The mechanical properties include the elastic modulus, yield strength, ultimate strength, failure strain, compressive strength, flexural strength, flexural modulus, and hardness. The results showed anisotropy and depended highly on the presence of water content more than coupon orientation. Wet conditioned specimens had a significant loss in mechanical properties compared with dry specimens. The observed outcomes were shown at par with results for yield strength of 53.5 ± 6.5 MPa (which is better than its peers) and a maximum compressive stress of 557.7 ± 5 MPa (highest among peers). Young's modulus 6.5 ± 0.5 GPa and a density equivalent to a biopolymer of 1.2 g/cc are expected to be the lightest among its peers; flexural strength 168.75 MPa, with lowest failure strain percentage of 6.5 ± 0.5 and Rockwell hardness value of 60 HRB, seem best in the class of this category. Simulation study identified a suitable application area based on impact and fatigue analysis. Overall, the exhaustive experimental work provided many opportunities to use this new material in various diversified applications in the future.
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Affiliation(s)
- Tajammul Hussain M. Mysore
- School of Mechanical Engineering, KLE Technological University, Hubballi 580031, Karnataka, India; (T.H.M.M.); (G.U.R.); (N.R.B.); (P.M.B.)
| | - Arun Y. Patil
- School of Mechanical Engineering, KLE Technological University, Hubballi 580031, Karnataka, India; (T.H.M.M.); (G.U.R.); (N.R.B.); (P.M.B.)
| | - G. U. Raju
- School of Mechanical Engineering, KLE Technological University, Hubballi 580031, Karnataka, India; (T.H.M.M.); (G.U.R.); (N.R.B.); (P.M.B.)
| | - N. R. Banapurmath
- School of Mechanical Engineering, KLE Technological University, Hubballi 580031, Karnataka, India; (T.H.M.M.); (G.U.R.); (N.R.B.); (P.M.B.)
- B.V.B. College of Engineering and Technology, Mechanical Engineering, KLE Technological University, Hubballi 580031, Karnataka, India
| | - Prabhakar M. Bhovi
- School of Mechanical Engineering, KLE Technological University, Hubballi 580031, Karnataka, India; (T.H.M.M.); (G.U.R.); (N.R.B.); (P.M.B.)
- B.V.B. College of Engineering and Technology, Mechanical Engineering, KLE Technological University, Hubballi 580031, Karnataka, India
| | - Asif Afzal
- Department of Mechanical Engineering, P. A. College of Engineering, Affiliated to Visvesvaraya Technological University, Belagavi 574153, Mangaluru, India
| | - Sagr Alamri
- Department of Mechanical Engineering, College of Engineering, King Khalid University, P.O. Box 394, Abha 61421, Saudi Arabia; (S.A.); (C.A.S.)
- Department of Mechanical Engineering, The University of Akron, Akron, OH 44325, USA
| | - C Ahamed Saleel
- Department of Mechanical Engineering, College of Engineering, King Khalid University, P.O. Box 394, Abha 61421, Saudi Arabia; (S.A.); (C.A.S.)
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14
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Wu Q, He C, Wang X, Zhang S, Zhang L, Xie R, Li Y, Wang X, Han Z, Zheng Z, Li G. Sustainable Antibacterial Surgical Suture Using a Facile Scalable Silk-Fibroin-Based Berberine Loading System. ACS Biomater Sci Eng 2021; 7:2845-2857. [PMID: 34043327 DOI: 10.1021/acsbiomaterials.1c00481] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Medical sutures with sustainable antibacterial properties can effectively inhibit pathogens, thus avoiding the occurrence of surgical site infection and reducing the recurrence of patients resulting in postoperative death. This paper describes a facile scalable antibacterial surgical suture with sustainable antibacterial function and fair mechanical and biocompatible properties using a simple, efficient, and eco-friendly method. Silk filaments were braided into a core-shell structure using a braiding machine, and then silk fibroin (SF) films loaded with different percentages of berberine (BB) were coated onto the surface of the suture. The drug-loaded sutures performed a slow drug-release profile of more than 7 days. Retention of the knot-pull tensile strength of all groups was above 87% during in vitro degradation within 42 days. The sutures had no toxicity to the cells' in vitro cytotoxicity. The results of the in vivo biocompatibility test showed mild inflammation and clear signs of supporting angiogenesis in the implantation site of the rats. This work provides a new route for achieving a BB-loaded and high-performance antibacterial suture, which is of great potential in applications for surgical operations.
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Affiliation(s)
- Qinting Wu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Chaoheng He
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Xuchen Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Shujun Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Li Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Ruijuan Xie
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Yi Li
- The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Zhifen Han
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Gang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
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15
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Houshyar S, Bhattacharyya A, Khalid A, Rifai A, Dekiwadia C, Kumar GS, Tran PA, Fox K. Multifunctional Sutures with Temperature Sensing and Infection Control. Macromol Biosci 2021; 21:e2000364. [PMID: 33433960 DOI: 10.1002/mabi.202000364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/03/2020] [Indexed: 12/15/2022]
Abstract
The next-generation sutures should provide in situ monitoring of wound condition such as temperature while reducing surgical site infection during wound closure. In this study, functionalized nanodiamond (FND) and reduced graphene oxide (rGO) into biodegradable polycaprolactone (PCL) are incorporated to develop a new multifunctional suture with such capabilities. Incorporation of FND and rGO into PCL enhances its tensile strength by about 43% and toughness by 35%. The sutures show temperature sensing capability in the range of 25-40 °C based on the shift in zero-splitting frequency of the nitrogen-vacancy (NV- ) centers in FND via optically detected magnetic resonance, paving the way for potential detection of infection or excessive inflammation in healing wounds. The suture surface readily coats with antibiotics to reduce bacterial infection risk to the wounds. The new suture thus is promising in monitoring and supporting wound closure.
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Affiliation(s)
- Shadi Houshyar
- College of Science, Engineering and Health, School of Engineering, RMIT University, Melbourne, 3001, Australia
| | - Amitava Bhattacharyya
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Asma Khalid
- College of Science, Engineering and Health, School of Applied Sciences, RMIT University, Melbourne, 3000, Australia
| | - Aaqil Rifai
- College of Science, Engineering and Health, School of Engineering, RMIT University, Melbourne, 3001, Australia.,Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Waurn Ponds, Vic, Australia
| | - Chaitali Dekiwadia
- RMIT Microscopy & Microanalysis Facility, College of Science, Engineering and Health, RMIT University, Melbourne, 3000, Australia
| | - G Sathish Kumar
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Phong A Tran
- Centre for Biomedical Technologies, 2 George Street, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia.,Interface Science and Materials Engineering Group, School of Mechanical, Medical and Process Engineering, QUT, 2 George Street, Brisbane, Queensland, 4000, Australia
| | - Kate Fox
- College of Science, Engineering and Health, School of Engineering, RMIT University, Melbourne, 3001, Australia
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Guambo MPR, Spencer L, Vispo NS, Vizuete K, Debut A, Whitehead DC, Santos-Oliveira R, Alexis F. Natural Cellulose Fibers for Surgical Suture Applications. Polymers (Basel) 2020; 12:E3042. [PMID: 33353190 PMCID: PMC7765994 DOI: 10.3390/polym12123042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 02/07/2023] Open
Abstract
Suture biomaterials are critical in wound repair by providing support to the healing of different tissues including vascular surgery, hemostasis, and plastic surgery. Important properties of a suture material include physical properties, handling characteristics, and biological response for successful performance. However, bacteria can bind to sutures and become a source of infection. For this reason, there is a need for new biomaterials for suture with antifouling properties. Here we report two types of cellulose fibers from coconut (Cocos nucifera) and sisal (Agave sisalana), which were purified with a chemical method, characterized, and tested in vitro and in vivo. According to SEM images, the cellulose fiber from coconut has a porous surface, and sisal has a uniform structure without internal spaces. It was found that the cellulose fiber from sisal has mechanical properties closer to silk fiber biomaterial using Ultimate Tensile Strength. When evaluating the cellulose fibers biodegradability, the cellulose from coconut showed a rapid weight loss compared to sisal. The antifouling test was negative, which demonstrated that neither possesses intrinsic microbicidal activity. Yet, a weak biofilm was formed on sisal cellulose fibers suggesting it possesses antifouling properties compared to cellulose from coconut. In vivo experiments using healthy mice demonstrated that the scarring and mechanical connection was like silk for both cellulose fibers. Overall, our results showed the potential use of cellulose fibers from vegetal for surgical sutures due to excellent mechanical properties, rapid degradation, and no bacterial adhesion.
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Affiliation(s)
- María Paula Romero Guambo
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuquí, Imbabura 100115, Ecuador; (M.P.R.G.); (L.S.); (N.S.V.)
| | - Lilian Spencer
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuquí, Imbabura 100115, Ecuador; (M.P.R.G.); (L.S.); (N.S.V.)
| | - Nelson Santiago Vispo
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuquí, Imbabura 100115, Ecuador; (M.P.R.G.); (L.S.); (N.S.V.)
| | - Karla Vizuete
- Center of Nanoscience and Nanotechnology, Universidad de las Fuerzas Armadas ESPE, Sangolquí 1715231, Ecuador; (K.V.); (A.D.)
| | - Alexis Debut
- Center of Nanoscience and Nanotechnology, Universidad de las Fuerzas Armadas ESPE, Sangolquí 1715231, Ecuador; (K.V.); (A.D.)
| | | | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmaceuticals and Synthesis of Novel Radiopharmaceuticals, Rio de Janeiro 21941906, Brazil;
| | - Frank Alexis
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuquí, Imbabura 100115, Ecuador; (M.P.R.G.); (L.S.); (N.S.V.)
- Biodiverse Source, San Miguel de Urcuquí 100651, Ecuador
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17
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Alves A, Sá M, Fook M, Cruz R, Rego R, Firmino M. Cicatrização da musculatura reto-abdominal em coelhos submetidos à laparorrafia com fios de sutura à base de quitosana, categute cromado e poliglactina 910. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO Objetivou-se, com este estudo, avaliar o processo de cicatrização da musculatura reto-abdominal em coelhos submetidos à laparorrafia, utilizando-se o fio de sutura à base de quitosana, comparando-o aos fios de categute cromado e poliglactina 910. Foram utilizados 24 coelhos adultos, divididos aleatoriamente em quatro grupos: quitosana e categute 15 dias (QC-15dias), quitosana e categute 30 dias (QC-30 dias), quitosana e poliglactina 910 15 dias (QP-15 dias) e quitosana e poliglactina 910 30 dias (QP-30 dias). Cada grupo foi composto por seis coelhos, nos quais foram realizadas duas incisões, uma do lado direito e outra do lado esquerdo e, posteriormente, a laparorrafia, com o fio de quitosana de um lado e o categute cromado ou poliglactina 910 do outro. Realizou-se análise clínico-cirúrgica, histológica e avaliação de achados de necropsia, além de testes de citotoxicidade e de mecânica no fio de quitosana. Ele apresentou baixa resistência mecânica e citotóxica. O fio de quitosana não proporcionou uma cicatrização satisfatória em coelhos, pois desencadeou uma resposta inflamatória acentuada.
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Affiliation(s)
- A.P. Alves
- Universidade Federal de Campina Grande, Brazil
| | - M.J.C. Sá
- Universidade Federal de Campina Grande, Brazil
| | - M.V.L. Fook
- Universidade Federal de Campina Grande, Brazil
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18
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Green bioprocess of degumming of jute fibers and bioscouring of cotton fabric by recombinant pectin methylesterase and pectate lyases from Clostridium thermocellum. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.02.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Marinho NP, Cademartori PHGD, Nisgoski S, Tanobe VODA, Klock U, Muñiz GIBD. Feasibility of ramie fibers as raw material for the isolation of nanofibrillated cellulose. Carbohydr Polym 2020; 230:115579. [PMID: 31887914 DOI: 10.1016/j.carbpol.2019.115579] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/19/2019] [Accepted: 11/06/2019] [Indexed: 02/09/2023]
Abstract
In this study, a strategy was adopted to enhance the use of ramie fibers as raw material for isolation of cellulose nanofibers (CNFs). Ramie pulp was produced by alkaline organosolv followed by bleaching. CNFs were produced by mechanical defibrillation, and films were fabricated via casting. Effects of number of passes in the mechanical grinding on physical and mechanical properties of CNF films were comprehensively studied. Potential of ramie fibers was proved by fabricating homogeneous nanofibers with average thickness of 8.72 nm, which led to CNF films with dense and non-porous networks, and crystallinity index of 76-78%. Tensile strength (42-82 MPa) and dynamic mechanical (9-11 GPa) performance were good only for less severe mechanical defibrillation. Lower solubility (1.85-2.43%). and activity (0.69) in water, and outstanding barrier properties against water vapor and oxygen make ramie suitable for more sustainable extraction of cellulose nanofibers and production of CNF films for diverse applications.
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Affiliation(s)
- Nelson Potenciano Marinho
- Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil.
| | - Pedro Henrique Gonzalez de Cademartori
- Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil; Departamento de Engenharia e Tecnologia Florestal (DETF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil; Programa de Pós-Graduação em Engenharia e Ciência dos Materiais (PIPE), Universidade Federal do Paraná, Curitiba 81531-980, Brazil.
| | - Silvana Nisgoski
- Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil; Departamento de Engenharia e Tecnologia Florestal (DETF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil.
| | - Valcineide Oliveira de Andrade Tanobe
- Engenharia de Bioprocessos e Biotecnologia, Universidade Federal do Paraná, Centro Politécnico, Curitiba 80050-540, Brazil; Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías - CUCEI, Blvd. Marcelino Barragán, 1421 esq. Calzada Olimpica, Col. Olimpica, C.P.44430, Universidad de Guadalajara, Guadalajara, Jalisco-México.
| | - Umberto Klock
- Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil; Departamento de Engenharia e Tecnologia Florestal (DETF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil.
| | - Graciela Inés Bolzon de Muñiz
- Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil; Departamento de Engenharia e Tecnologia Florestal (DETF), Universidade Federal do Paraná, Curitiba 80210 170, Brazil.
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20
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Crocus sativus L. Extract Containing Polyphenols Modulates Oxidative Stress and Inflammatory Response against Anti-Tuberculosis Drugs-Induced Liver Injury. PLANTS 2020; 9:plants9020167. [PMID: 32019201 PMCID: PMC7076685 DOI: 10.3390/plants9020167] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 02/07/2023]
Abstract
The purpose of this study is to analyze the polyphenolic rich extract of Crocus sativus L. petals (CSP) in modulating liver oxidative stress and inflammatory response status against rifampicin isoniazid (INH-RIF) drug-induced liver injury. The INH-RIF was administered for 14 days with varying doses in Wistar rats, while silymarin was administered as standard dose. We report the defensive impacts of CSP against INH-RIF induced liver oxidative stress and proinflammatory cytokine. The CSP treatment at both doses significantly controlled all modulating biochemical hepatic injury indicators and resulted in the attenuation of arbitral INH-RIF damage. The components present in CSP identified by LC–ESI-Q-TOF–MS were found to be flavonoids and fatty acids. It can be inferred that CSP possesses a hepatoprotective capacity against INH-RIF-mediated hepatic injury, which may prove to be a medically beneficial natural product for the management of drug-induced liver injury.
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James BD, Ruddick WN, Vasisth SE, Dulany K, Sulekar S, Porras A, Marañon A, Nino JC, Allen JB. Palm readings: Manicaria saccifera palm fibers are biocompatible textiles with low immunogenicity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110484. [PMID: 31924028 DOI: 10.1016/j.msec.2019.110484] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 11/20/2019] [Accepted: 11/20/2019] [Indexed: 12/21/2022]
Abstract
Plant-based fibers are a potential alternative to synthetic polymer fibers that can yield enhanced biocompatibility and mechanical properties matching those properties of tissue. Given the unique morphology of the bract of the Manicaria saccifera palm, being an interwoven meshwork of fibers, we believe that these fibers with this built-in structure could prove useful as a tissue engineering scaffold material. Thus, we first investigated the fiber's in vitro biocompatibility and immunogenicity. We cultured NIH/3T3 mouse fibroblasts, human aortic smooth muscle cells, and human adipose-derived mesenchymal stem cells on the fiber mats, which all readily attached and over 21 days grew to engulf the fibers. Importantly, this was achieved without treating the plant tissue with extracellular matrix proteins or any adhesion ligands. In addition, we measured the gene expression and protein secretion of three target inflammatory cytokines (IL-1β, IL-8, and TNFα) from THP-1 human leukemia monocytes cultured in the presence of the biotextile as an in vitro immunological model. After 24 h of culture, gene expression and protein secretion were largely the same as the control, demonstrating the low immunogenicity of Manicaria saccifera fibers. We also measured the tensile mechanical properties of the fibers. Individual fibers after processing had a Young's modulus of 9.51 ± 4.38 GPa and a tensile strength of 68.62 ± 27.93 MPa. We investigated the tensile mechanical properties of the fiber mats perpendicular to the fiber axis (transverse loading), which displayed upwards of 100% strain, but with a concession in strength compared to longitudinal loading. Collectively, our in vitro assessments point toward Manicaria saccifera as a highly biocompatible biotextile, with a range of potential clinical and engineering applications.
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Affiliation(s)
- Bryan D James
- Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA
| | - William N Ruddick
- Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA
| | - Shangradhanva E Vasisth
- Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA
| | - Krista Dulany
- Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA
| | - Soumitra Sulekar
- Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA
| | - Alicia Porras
- Mechanical Engineering Department, Universidad de los Andes, CR 1 ESTE 19A 40, Bogota 111711, Colombia
| | - Alejandro Marañon
- Chemical Engineering Department, Universidad de los Andes, CR, 1 ESTE 19A 40, Bogota, 111711, Colombia
| | - Juan C Nino
- Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA
| | - Josephine B Allen
- Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA.
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Tang Y, Liu F, Xing H, Mao K, Chen G, Guo Q, Chen J. Correlation Analysis of Lignin Accumulation and Expression of Key Genes Involved in Lignin Biosynthesis of Ramie ( Boehmeria nivea). Genes (Basel) 2019; 10:genes10050389. [PMID: 31121827 PMCID: PMC6562848 DOI: 10.3390/genes10050389] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 05/09/2019] [Accepted: 05/17/2019] [Indexed: 11/16/2022] Open
Abstract
The phloem of the stem of ramie (Boehmeria nivea) is an important source of natural fiber for the textile industry. However, the lignin content in the phloem affects the quality of ramie phloem fiber. In this study, the lignin content and related key gene expression levels were analyzed in the phloem and xylem at different developmental periods. The results showed that the relative expression levels of lignin synthesis-related key genes in the xylem and phloem of the stem gradually decreased from the fast-growing period to the late maturation period, but the corresponding lignin content increased significantly. However, the relative expression levels of a few genes were the highest during the maturation period. During all three periods, the lignin content in ramie stems was positively correlated with the expression of genes, including PAL, C4H and 4CL1 in the phenylpropanoid pathway, F5H and CCoAOMT in the lignin-specific synthetic pathway, and CAD in the downstream pathway of lignin synthesis, but the lignin content was negatively correlated with the expression of genes including 4CL3 in the phenylpropanoid pathway and UDP-GT in the shunt pathway of lignin monomer synthesis. The ramie 4CL3 recombinant protein prefers cinnamic acid as a substrate during catalysis, and it negatively regulates lignin synthesis. It is speculated that ramie 4CL3 is mainly involved in the synthesis of ramie flavonoid compounds, and that 4CL1 is mainly involved in lignin synthesis.
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Affiliation(s)
- Yinghong Tang
- College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde 415000, Hunan, China.
| | - Fang Liu
- College of Biological and Environmental Engineering, Changsha University, Changsha 410003, Hunan, China.
| | - Hucheng Xing
- College of Agriculture, Hunan Agricultural University, Changsha 410128, Hunan, China.
| | - Kaiquan Mao
- College of Biological and Environmental Engineering, Changsha University, Changsha 410003, Hunan, China.
| | - Guo Chen
- College of Biological and Environmental Engineering, Changsha University, Changsha 410003, Hunan, China.
| | - Qingquan Guo
- College of Biological and Environmental Engineering, Changsha University, Changsha 410003, Hunan, China.
| | - Jianrong Chen
- College of Biological and Environmental Engineering, Changsha University, Changsha 410003, Hunan, China.
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23
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Green chemistry synthesis of biocompatible ZnS quantum dots (QDs): their application as potential thin films and antibacterial agent. INTERNATIONAL NANO LETTERS 2019. [DOI: 10.1007/s40089-019-0270-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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24
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A review on processing techniques of bast fibers nanocellulose and its polylactic acid (PLA) nanocomposites. Int J Biol Macromol 2018; 121:1314-1328. [PMID: 30208300 DOI: 10.1016/j.ijbiomac.2018.09.040] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/15/2018] [Accepted: 09/07/2018] [Indexed: 12/11/2022]
Abstract
The utilization of nanocellulose has increasingly gained attentions from various research fields, especially the field of polymer nanocomposites owing to the growing environmental hazardous of petroleum based fiber products. Meanwhile, the searching of alternative cellulose sources from different plants has become the interests for producing nanocellulose with varying characterizations that expectedly suit in specific field of applications. In this content the long and strong bast fibers from plant species was gradually getting its remarkable position in the field of nanocellulose extraction and nanocomposites fabrications. This review article intended to present an overview of the chemical structure of cellulose, different types of nanocellulose, bast fibers compositions, structure, polylactic acid (PLA) and the most probable processing techniques on the developments of nanocellulose from different bast fibers especially jute, kenaf, hemp, flax, ramie and roselle and its nanocomposites. This article however more focused on the fabrication of PLA based nanocomposites due to its high firmness, biodegradability and sustainability properties in developed products towards the environment. Along with this it also explored a couple of issues to improve the processing techniques of bast fibers nanocellulose and its reinforcement in the PLA biopolymer as final products.
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25
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Liu F, Chen JR, Tang YH, Chang HT, Yuan YM, Guo Q. Isolation and characterization of cinnamate 4-hydroxylase gene from cultivated ramie ( Boehmeria nivea). BIOTECHNOL BIOTEC EQ 2018. [DOI: 10.1080/13102818.2017.1418675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Fang Liu
- College of Agriculture, Ramie Institute, Hunan Agricultural University, Changsha, PR China
- Laboratory of Economic Animal and Plant Quality Control and Application, College of Biological and Environmental Engineering, Changsha University, Changsha, PR China
| | - Jian-Rong Chen
- Laboratory of Economic Animal and Plant Quality Control and Application, College of Biological and Environmental Engineering, Changsha University, Changsha, PR China
| | - Ying-Hong Tang
- College of Agriculture, Ramie Institute, Hunan Agricultural University, Changsha, PR China
| | - Hong-Tao Chang
- College of Agriculture, Ramie Institute, Hunan Agricultural University, Changsha, PR China
| | - You-Mei Yuan
- College of Agriculture, Ramie Institute, Hunan Agricultural University, Changsha, PR China
| | - Qingquan Guo
- College of Agriculture, Ramie Institute, Hunan Agricultural University, Changsha, PR China
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26
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Kalita H, Hazarika A, Kandimalla R, Kalita S, Devi R. Development of banana (Musa balbisiana) pseudo stem fiber as a surgical bio-tool to avert post-operative wound infections. RSC Adv 2018; 8:36791-36801. [PMID: 35558952 PMCID: PMC9089245 DOI: 10.1039/c8ra04470h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 10/14/2018] [Indexed: 11/21/2022] Open
Abstract
The search to develop an ideal suture material encourages us to explore novel suture biomaterials with superior characteristics to the current commercially available products. Surgical sutures play a crucial role in the development of post-operative wound infection by acting as a substrate for biofilm formation which leads to dehisced wounds. In this context, the present invention meets this need by fabricating banana (Musa balbisiana) fibre into an advanced antimicrobials releasing suture biomaterial (BSc) for the prevention of post-operative wound infection. Suture material developed from banana pseudo stem fiber was impregnated with chloramphenicol, clotrimazole and growth factors with the aid of a hydro-gel system. The fabricated suture material was found to be biocompatible towards human erythrocytes and L929 mouse fibroblast cells. BSc exhibited promising physico-chemical characteristics which were comparable to the commercially available Bombyx mori silk fibroin (BMSF) suture. BSc displayed a biphasic release pattern with sustained release of chloramphenicol for up to 140 h. Apart from being environment friendly and having a facile fabrication method, this advanced suture biomaterial showed broad spectrum in vitro antimicrobial activity against bacterial and fungal pathogens. BSc successfully impeded biofilm formation on its surface, as is evident from the confocal microscopy analysis. This contributes to superior wound healing efficacy in terms of reduced microbial burden and a subsequent decrease in the inflammatory cytokine levels. Histopathological observations further supported the pronounced healing efficacy of BSc sutured wounds. The findings of this study establish the banana pseudo stem fiber as a novel advanced suture biomaterial to prevent post-operative wound infections. A novel antimicrobial suture biomaterial developed from banana waste fibers to avert post operative wound infections.![]()
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Affiliation(s)
- Himadri Kalita
- Life Sciences Division
- Institute of Advanced Study in Science and Technology
- Guwahati
- India
| | - Ankita Hazarika
- Life Sciences Division
- Institute of Advanced Study in Science and Technology
- Guwahati
- India
| | - Raghuram Kandimalla
- Drug Discovery Laboratory
- Institute of Advanced Study in Science and Technology
- Guwahati
- India
| | - Sanjeeb Kalita
- Drug Discovery Laboratory
- Institute of Advanced Study in Science and Technology
- Guwahati
- India
| | - Rajlakshmi Devi
- Life Sciences Division
- Institute of Advanced Study in Science and Technology
- Guwahati
- India
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Kandimalla R, Dash S, Bhowal AC, Kalita S, Talukdar NC, Kundu S, Kotoky J. Glycogen-gold nanohybrid escalates the potency of silymarin. Int J Nanomedicine 2017; 12:7025-7038. [PMID: 29026299 PMCID: PMC5626415 DOI: 10.2147/ijn.s142497] [Citation(s) in RCA: 16] [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] [Indexed: 11/23/2022] Open
Abstract
In this study, a glycogen-gold nanohybrid was fabricated to enhance the potency of a promising hepatoprotective agent silymarin (Sly) by improving its solubility and gut permeation. By utilizing a facile green chemistry approach, biogenic gold nanoparticles were synthesized from Annona reticulata leaf phytoconstituents in combination with Sly (SGNPs). Further, the SGNPs were aggregated in glycogen biopolymer to yield the therapeutic nanohybrids (GSGNPs). Transmission electron microscopy, UV-Vis spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy analysis confirmed the successful formation and conjugation of both SGNPs and GSGNPs. The fabricated nanohybrids showed significant protection against CCl4-induced hepatic injury in Wistar rats and maintained natural antioxidant (superoxide dismutase and catalase) levels. Animals treated with GSGNPs (10 mg/kg) and SGNPs (20 mg/kg) retained usual hepatic functions with routine levels of hepatobiliary enzymes (aspartate transferase, alanine transaminase, alkaline phosphatase, and lactate dehydrogenase) and inflammatory markers (interleukin-1β and tumor necrosis factor-α) with minimal lipid peroxidation, whereas those treated with 100 mg/kg of Sly showed the similar effect. These results were also supported by histopathology of the livers where pronounced hepatoprotection with normal hepatic physiology and negligible inflammatory infiltrate were observed. Significant higher plasma Cmax supported the enhanced bioavailability of Sly upon GSGNPs treatment compared to SGNPs and free Sly. Graphite furnace atomic absorption spectrophotometry analysis also substantiated the efficient delivery of GSGNPs over SGNPs. The fabricated therapeutic nanohybrids were also found to be biocompatible toward human erythrocytes and L929 mouse fibroblast cells. Overall, due to increased solubility, bioavailability and profuse gut absorption; GSGNPs demonstrated tenfold enhanced potency compared to free Sly.
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Affiliation(s)
| | - Suvakanta Dash
- Girijananda Choudhury Institute of Pharmaceutical Sciences
| | | | - Sanjeeb Kalita
- Drug Discovery Lab, Institute of Advanced Study in Science and Technology
| | | | - Sarathi Kundu
- Soft Nano Laboratory, Institute of Advanced Study in Science and Technology
| | - Jibon Kotoky
- Drug Discovery Lab, Institute of Advanced Study in Science and Technology
- National Institute of Pharmaceutical Education and Research, Guwahati, India
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28
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Cheng C, Guo R, Lan J, Jiang S. Extraction of lotus fibres from lotus stems under microwave irradiation. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170747. [PMID: 28989774 PMCID: PMC5627114 DOI: 10.1098/rsos.170747] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 08/07/2017] [Indexed: 05/25/2023]
Abstract
An efficient technology for preparing lotus fibres under microwave irradiation was developed. The lotus fibres were characterized by scanning electron microscopy, Fourier transform infrared spectrometry, X-ray diffraction and thermogravimetry. Lotus fibres prepared are a kind of hollow fibres which are composed of a superfine fibre and an external shell. The effect of the treatment time with hydrogen peroxide under microwave irradiation on components, whiteness, moisture regain, removal rate of impurities, fineness, tensile strength and breaking elongation of lotus fibres was investigated. The results show that the cellulose content in lotus fibres increases with increase in treatment time. Whiteness and moisture regain of lotus fibres increase with increase in treatment time with hydrogen peroxide. The removal rate of impurities and the fineness of lotus fibres are improved after they are treated with hydrogen peroxide. Microwave irradiation is supposed to be an efficient method for producing lotus fibres.
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Affiliation(s)
- Cheng Cheng
- College of Light Industry, Textile and Food Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, China
| | - Ronghui Guo
- College of Light Industry, Textile and Food Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, China
| | - Jianwu Lan
- College of Light Industry, Textile and Food Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, China
| | - Shouxiang Jiang
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
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29
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Yu X, Pan Y, Wang D, Yuan B, Song L, Hu Y. Fabrication and Properties of Biobased Layer-by-Layer Coated Ramie Fabric-Reinforced Unsaturated Polyester Resin Composites. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00101] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaojuan Yu
- State
Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Ying Pan
- State
Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Dong Wang
- State
Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Bihe Yuan
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Lei Song
- State
Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Yuan Hu
- State
Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
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30
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Kandimalla R, Dash S, Kalita S, Choudhury B, Malampati S, Devi R, Ramanathan M, Talukdar NC, Kotoky J. Bioactive Fraction of Annona reticulata Bark (or) Ziziphus jujuba Root Bark along with Insulin Attenuates Painful Diabetic Neuropathy through Inhibiting NF-κB Inflammatory Cascade. Front Cell Neurosci 2017; 11:73. [PMID: 28381989 PMCID: PMC5361110 DOI: 10.3389/fncel.2017.00073] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 02/28/2017] [Indexed: 02/01/2023] Open
Abstract
The present study explains the neuroprotective ability of bioactive fractions of Annona reticulata bark (ARB) and Ziziphus jujuba root bark (ZJ) along with insulin against diabetic neuropathy. By using different solvents of increasing polarity ARB and ZJ were undergone for bioactive guided fractionation. The neuroprotective ability of the all the plant fractions were tested against H2O2 induced toxicity in SHSY5Y neuroblastoma cell lines and DRG neuronal cells. Among all the fractions tested, the methanol extract of ARB and ZJ (ARBME and ZJME) and its water fractions (ARBWF and ZJWF) exhibited significant neuroprotection against H2O2 induced toxicity in SHSY5Y cells and DRG neuronal cells. Further both the active fractions were tested against streptozotocin (55 mg/kg i.p.) induced diabetic neuropathy in male Wistar rats. Body weight changes, blood glucose levels and pain threshold through hot plate, tail immersion, cold plate and Randall-Sillitto methods were measured throughout the study at weekly interval. After completion of the drug treatment period, all the animals were sacrificed to measure the sciatic nerve lipid peroxidation, antioxidative enzyme levels (SOD, catalase, and GSH) and cytokine levels (IL-1β, IL-6, IL-10, TNF-α, iNOS, and NFκB) through ELISA and western blotting analysis. Results of this study explain that ARBME, ZJME, ARBWF, and ZJWF along with insulin potentially attenuate the thermal, mechanical hyperalgesia and cold allodynia in diabetic neuropathic rats, where insulin treatment alone failed to diminish the same. Reduction of sciatic nerve oxidative stress, NF-κB and iNOS mediated inflammatory cascade and normalization of abnormal cytokine release confirms the possible mechanism of action. The present study confirms the neuroprotective ability of ARB and ZJ against painful diabetic neuropathy through inhibiting oxidative stress and NF-κB inflammatory cascade.
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Affiliation(s)
- Raghuram Kandimalla
- Drug Discovery Laboratory, Institute of Advanced Study in Science and Technology Guwahati, India
| | - Suvakanta Dash
- Girijananda Chowdhury Institute of Pharmaceutical Science Guwahati, India
| | - Sanjeeb Kalita
- Drug Discovery Laboratory, Institute of Advanced Study in Science and Technology Guwahati, India
| | - Bhaswati Choudhury
- Drug Discovery Laboratory, Institute of Advanced Study in Science and Technology Guwahati, India
| | - Sandeep Malampati
- School of Chinese Medicine, Hong Kong Baptist University Kowloon Tong, Hong Kong
| | - Rajlakshmi Devi
- Drug Discovery Laboratory, Institute of Advanced Study in Science and Technology Guwahati, India
| | | | - Narayan C Talukdar
- Drug Discovery Laboratory, Institute of Advanced Study in Science and Technology Guwahati, India
| | - Jibon Kotoky
- Drug Discovery Laboratory, Institute of Advanced Study in Science and TechnologyGuwahati, India; National Institute of Pharmaceutical Education and ResearchGuwahati, India
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31
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Kalita H, Hazarika A, Kalita S, Kandimalla R, Devi R. Antimicrobials tethering on suture surface through a hydrogel: a novel strategy to combat postoperative wound infections. RSC Adv 2017. [DOI: 10.1039/c7ra04888b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study aimed to develop a novel biocompatible suture biomaterial from Eri silk waste to avoid surgical site infections.
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Affiliation(s)
- Himadri Kalita
- Life Sciences Division
- Institute of Advanced Study in Science and Technology (IASST)
- Guwahati-781035
- India
| | - Ankita Hazarika
- Life Sciences Division
- Institute of Advanced Study in Science and Technology (IASST)
- Guwahati-781035
- India
| | | | | | - Rajlakshmi Devi
- Life Sciences Division
- Institute of Advanced Study in Science and Technology (IASST)
- Guwahati-781035
- India
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32
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Kandimalla R, Dash S, Kalita S, Choudhury B, Malampati S, Kalita K, Kalita B, Devi R, Kotoky J. Protective Effect of Bioactivity Guided Fractions of Ziziphus jujuba Mill. Root Bark against Hepatic Injury and Chronic Inflammation via Inhibiting Inflammatory Markers and Oxidative Stress. Front Pharmacol 2016; 7:298. [PMID: 27656145 PMCID: PMC5013132 DOI: 10.3389/fphar.2016.00298] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 08/23/2016] [Indexed: 11/13/2022] Open
Abstract
The tribal communities of North Eastern India rely on herbal medicine to cure various disease conditions. Ziziphus jujuba Mill. (Rhamnaceae) is one of such medicinal plants used for curing liver ailments, insomnia, anemia, diarrhea, diabetic complications, cancer, and loss of appetite. The present study was aimed to describe the protective ability of Z. jujuba root bark (ZJRB) against hepatic injury and chronic inflammation. Bioactivity guided fractionation of Z. jujuba methanol extract (ZJME) was performed using different solvents of increasing polarity viz. hexane (ZJHF), chloroform (ZJCF), ethyl acetate (ZJEAF), water (ZJWF), and residue (ZJMR). In vitro antioxidant results revealed that both ZJME and ZJWF possess strong antioxidant activity among all the fractions and mother extract tested. Further, ZJME and ZJWF showed significant protection against CCl4 intoxicated HepG2 cell lines by means of increased cell viability and decreased LDH levels compared to control group. ZJME at 200, 400 mg/kg and ZJWF at 50, 100 mg/kg inhibited the lipid peroxidation and significantly restored the liver function markers (AST, ALT, ALP, LDH, SOD, and CAT) and cytokine levels (TNF-α, Il-1β, and Il-10) in CCl4 induced acute liver damage in rats. All the results were comparable with standard drug silymarin which was further confirmed by histopathology analysis of liver. Similarly, inflammation and increase inflammatory cytokines levels of carrageenan induced paw edema in rats have been refurbished to normal levels on par with the standard drug indomethacin. ZJWF demonstrated potent response than ZJME in all the biological tests conducted. The results of the study signify the ability of ZJRB as good therapeutic agent for liver toxicity and chronic inflammation.
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Affiliation(s)
- Raghuram Kandimalla
- Drug Discovery Laboratory, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Suvakanta Dash
- Girijananda Chowdhury Institute of Pharmaceutical ScienceGuwahati, India
| | - Sanjeeb Kalita
- Drug Discovery Laboratory, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Bhaswati Choudhury
- Drug Discovery Laboratory, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Sandeep Malampati
- School of Chinese Medicine, Hong Kong Baptist UniversityHong Kong, China
| | | | - Bhupalee Kalita
- Jawaharlal Nehru Centre for Advanced Scientific ResearchBengaluru, India
| | - Rajlakshmi Devi
- Drug Discovery Laboratory, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Jibon Kotoky
- Drug Discovery Laboratory, Institute of Advanced Study in Science and TechnologyGuwahati, India
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33
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Kandimalla R, Kalita S, Saikia B, Choudhury B, Singh YP, Kalita K, Dash S, Kotoky J. Antioxidant and Hepatoprotective Potentiality of Randia dumetorum Lam. Leaf and Bark via Inhibition of Oxidative Stress and Inflammatory Cytokines. Front Pharmacol 2016; 7:205. [PMID: 27471465 PMCID: PMC4943931 DOI: 10.3389/fphar.2016.00205] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 06/27/2016] [Indexed: 11/17/2022] Open
Abstract
Randia dumetorum Lam. (RD) (Rubiaceae) is traditionally used by some tribes of Assam and Manipur of North East India for the treatment of liver ailments. In this context, to scientifically validate this indigenous traditional knowledge, we have evaluated the antioxidant and hepatoprotective activity of RD leaf and bark. The methanol extracts of RD leaf and bark were evaluated for in vitro antioxidant activity which exhibited good antioxidant activity in terms of reducing power assay, total antioxidant assay and DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging assay. Total phenolic and flavonoid content were found to be 112 ± 3.24 mg and 138 ± 2.46 mg gallic acid equivalents/g extract and 2.6 ± 0.26 mg and 3.34 ± 0.31 mg rutin equivalents/g extract respectively for RD leaf and bark methanol extracts. The in vivo hepato protective activity of the RD leaf and bark extract was evaluated against carbon tetrachloride (CCl4) induced hepatic damage in male wistar rats. CCl4 administration induced hepatic damage in rats resulted in increased levels of aspartate transaminase, alanine transaminase, alkaline phosphatase, lactate dehydrogenase, thiobarbituric acid reacting substances, albumin, bilirubin, TNF-α, IL-1β and decreased levels of total protein and antioxidant enzymes like superoxide dismutase, catalase, and glutathione reductase. RD leaf and bark methanol extracts pre-treatment exhibited protection against CCl4 induced hepatotoxicity by reversing all the abnormal parameters to significant levels. Histopathological results revealed that RD leaf and bark extracts at 400 mg/kg protects the liver from damage induced by CCl4. The results of this study scientifically validate the traditional use of RD leaf and bark for the treatment of liver ailments.
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Affiliation(s)
- Raghuram Kandimalla
- Drug Discovery Lab, Division of Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Sanjeeb Kalita
- Drug Discovery Lab, Division of Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Bikas Saikia
- Drug Discovery Lab, Division of Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Bhaswati Choudhury
- Drug Discovery Lab, Division of Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Yogendra P. Singh
- Drug Discovery Lab, Division of Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | | | - Suvakanta Dash
- Girijananda Chowdhury Institute of Pharmaceutical ScienceGuwahati, India
| | - Jibon Kotoky
- Drug Discovery Lab, Division of Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
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Kandimalla R, Kalita S, Choudhury B, Dash S, Kalita K, Kotoky J. Chemical Composition and Anti-Candidiasis Mediated Wound Healing Property of Cymbopogon nardus Essential Oil on Chronic Diabetic Wounds. Front Pharmacol 2016; 7:198. [PMID: 27445828 PMCID: PMC4928018 DOI: 10.3389/fphar.2016.00198] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/21/2016] [Indexed: 12/25/2022] Open
Abstract
Poor wound healing is one of the major complication of diabetic patients which arises due to different factors like hyperglycemia, oxidative stress, vascular insufficiency and microbial infections. Candidiasis of diabetic wounds is a difficult to treat condition and potentially can lead to organ amputation. There are a few number of medications available in market to treat this chronic condition; which demands for alternative treatment options. In traditional system of medicine like Ayurveda, essential oil extracted from leaves of Cymbopogon nardus L. (Poaceae) has been using for the treatment of microbial infections, inflammation and pain. In this regard, we have evaluated anti-Candida and anti-inflammatory activity mediated wound healing property of C. nardus essential oil (EO-CN) on candidiasis of diabetic wounds. EO-CN was obtained through hydro-distillation and subjected to Gas chromatography-mass spectroscopy (GC-MS) analysis for chemical profiling. Anti-Candida activity of EO-CN was tested against Candida albicans, C. glabrata and C. tropicalis by in vitro zone of inhibition and minimum inhibitory concentration (MIC) assays. Anti-candidiasis ability of EO-CN was evaluated on C. albicans infected diabetic wounds of mice through measuring candida load on the 7th, 14th, and 21st day of treatment. Further progression in wound healing was confirmed by measuring the inflammatory marker levels and histopathology of wounded tissues on last day of EO-CN treatment. A total of 95 compounds were identified through GC-MS analysis, with major compounds like citral, 2,6-octadienal-, 3,7-dimethyl-, geranyl acetate, citronellal, geraniol, and citronellol. In vitro test results demonstrated strong anti-Candida activity of EO-CN with a MIC value of 25 μg/ml against C. albicans, 50 μg/ml against C. glabrata and C. tropicalis. EO-CN treatment resulted in significant reduction of candida load on diabetic wounds. Acceleration in wound healing was indicated by declined levels of inflammatory cytokines at wounded area in EO-CN treated animals compared to non-treated group, which was further confirmed by histopathological examination. This study suggests that through significant anti-Candida and anti-inflammatory activity, EO-CN attenuates the growth of the fungus on diabetic wounds and simultaneously reduces the inflammation which leads to acceleration of the wound healing process.
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Affiliation(s)
- Raghuram Kandimalla
- Drug Discovery Lab, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Sanjeeb Kalita
- Drug Discovery Lab, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Bhaswati Choudhury
- Drug Discovery Lab, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Suvakanta Dash
- Girijananda Chowdhury Institute of Pharmaceutical ScienceGuwahati, India
| | | | - Jibon Kotoky
- Drug Discovery Lab, Institute of Advanced Study in Science and TechnologyGuwahati, India
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Kandimalla R, Dash S, Kalita S, Choudhury B, Malampati S, Kalita K, Kotoky J. Bioactive Guided Fractions of Annona reticulata L. bark: Protection against Liver Toxicity and Inflammation through Inhibiting Oxidative Stress and Proinflammatory Cytokines. Front Pharmacol 2016; 7:168. [PMID: 27445809 PMCID: PMC4916736 DOI: 10.3389/fphar.2016.00168] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 06/03/2016] [Indexed: 11/13/2022] Open
Abstract
Herbal medicine is popularized worldwide due to its ability to cure the diseases with lesser or no side effects. North Eastern part of India comes under one of the world biodiversity hotspots which is very rich in traditional herbal medicine. Annona reticulata L. (Annonaceae) is one such plant used for the treatment of inflammatory diseases, liver ailments and diabetes by traditional healers. The present study was aimed to scientifically validate this folk knowledge and to develop an herbal remedy through evaluating bioactive guided fractions of A. reticulata (AR) bark against hepatotoxicity and inflammation using in vitro and in vivo models. Results of this study demonstrates that among all fractions of AR bark, methanol extract and its water fraction possess strong anti-oxidant ability and showed protection against CCl4 induced toxicity in HepG2 cell lines and rats. Both the fractions also exhibit dose dependent anti-inflammatory activity against carrageenan induced inflammation in rats. Water fraction showed potent response in the entire tests conducted than methanol extract, which states that polar components of the AR bark methanol extract were responsible for these activities. Further, from the experiments conducted to elucidate the mechanism of action, the results revealed that AR bark showed liver protection and anti-inflammatory response through inhibiting the oxidative stress and inflammatory cytokines.
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Affiliation(s)
- Raghuram Kandimalla
- Drug Discovery Laboratory, Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Suvakanta Dash
- Girijananda Chowdhury Institute of Pharmaceutical ScienceGuwahati, India
| | - Sanjeeb Kalita
- Drug Discovery Laboratory, Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Bhaswati Choudhury
- Drug Discovery Laboratory, Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Sandeep Malampati
- School of Chinese Medicine, Hong Kong Baptist UniversityHong Kong, China
| | | | - Jibon Kotoky
- Drug Discovery Laboratory, Life Sciences, Institute of Advanced Study in Science and TechnologyGuwahati, India
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