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Shih YT, Cheng KC, Ko YJ, Lin CY, Wang MC, Lee CI, Lee PL, Qi R, Chiu JJ, Hsu SH. 3D-Printed proangiogenic patches of photo-crosslinked gelatin and polyurethane hydrogels laden with vascular cells for treating vascular ischemic diseases. Biomaterials 2024; 309:122600. [PMID: 38718614 DOI: 10.1016/j.biomaterials.2024.122600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 04/19/2024] [Accepted: 04/29/2024] [Indexed: 06/03/2024]
Abstract
Engineering vascularized tissues remains a promising approach for treating ischemic cardiovascular diseases. The availability of 3D-bioprinted vascular grafts that induce therapeutic angiogenesis can help avoid necrosis and excision of ischemic tissues. Here, using a combination of living cells and biodegradable hydrogels, we fabricated 3D-printed biocompatible proangiogenic patches from endothelial cell-laden photo-crosslinked gelatin (EC-PCG) bioink and smooth muscle cell-encapsulated polyurethane (SMC-PU) bioink. Implantation of 3D-bioprinted proangiogenic patches in a mouse model showed that EC-PCG served as an angiogenic capillary bed, whereas patterned SMC-PU increased the density of microvessels. Moreover, the assembled patterns between EC-PCG and SMC-PU induced the geometrically guided generation of microvessels with blood perfusion. In a rodent model of hindlimb ischemia, the vascular patches rescued blood flow to distal tissues, prevented toe/foot necrosis, promoted muscle remodeling, and increased the capillary density, thereby improving the heat-escape behavior of ischemic animals. Thus, our 3D-printed vascular cell-laden bioinks constitute efficient and scalable biomaterials that facilitate the engineering of vascular patches capable of directing therapeutic angiogenesis for treating ischemic vascular diseases.
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Affiliation(s)
- Yu-Tsung Shih
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kun-Chih Cheng
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Yi-Ju Ko
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Chia-Yu Lin
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Mei-Cun Wang
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Chih-I Lee
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Pei-Ling Lee
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Rong Qi
- Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China.
| | - Jeng-Jiann Chiu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan; College of Medical Science and Technology, Taipei Heart Institute, Taipei Medical University, Taipei, Taiwan; Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan.
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan; Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan.
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2
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Meldrum OW, Yakubov GE. Journey of dietary fiber along the gastrointestinal tract: role of physical interactions, mucus, and biochemical transformations. Crit Rev Food Sci Nutr 2024:1-29. [PMID: 39141568 DOI: 10.1080/10408398.2024.2390556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
Dietary fiber-rich foods have been associated with numerous health benefits, including a reduced risk of cardiovascular and metabolic diseases. Harnessing the potential to deliver positive health outcomes rests on our understanding of the underlying mechanisms that drive these associations. This review addresses data and concepts concerning plant-based food functionality by dissecting the cascade of physical and chemical digestive processes and interactions that underpin these physiological benefits. Functional transformations of dietary fiber along the gastrointestinal tract from the stages of oral processing and gastric emptying to intestinal digestion and colonic fermentation influence its capacity to modulate digestion, transit, and commensal microbiome. This analysis highlights the significance, limitations, and challenges in decoding the complex web of interactions to establish a coherent framework connecting specific fiber components' molecular and macroscale interactions across multiple length scales within the gastrointestinal tract. One critical area that requires closer examination is the interaction between fiber, mucus barrier, and the commensal microbiome when considering food structure design and personalized nutritional strategies for beneficial physiologic effects. Understanding the response of specific fibers, particularly concerning an individual's physiology, will offer the opportunity to exploit these functional characteristics to elicit specific, symptom-targeting effects or use fiber types as adjunctive therapies.
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Affiliation(s)
- Oliver W Meldrum
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Gleb E Yakubov
- Soft Matter Biomaterials and Biointerfaces, School of Biosciences, University of Nottingham, Nottingham, UK
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3
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Ai T, Wan J, Yu X, Liu J, Yin C, Yang L, Liu H, Qin R. The Non-Denatured Processing of Brasenia schreberi Mucilage-Characteristics of Hydrodynamic Properties and the Effect on In Vivo Functions. Foods 2024; 13:1824. [PMID: 38928766 PMCID: PMC11203210 DOI: 10.3390/foods13121824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/29/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Food non-denatured processes, such as freeze-drying and grinding, are commonly applied to raw materials with good bioactive functions. Although the functional components are maintained, whether structural and physical changes impact the in vivo function is often ignored in practical situations. Brasenia schreberi mucilage (BSM) has a significant alleviation effect on DSS-induced colitis. This work focused on the influence of non-denatured manufacture on the colonic benefits of BSM-based products. First, three forms of products including fresh mucilage (FM), freeze-dried products (FS), and freeze-dried powder (FP) were prepared. Then, their in vitro physiochemical properties were compared, analyzing their influence on the gut inflammation degree, microbial composition, and SCFA production in mice. The results suggested that the water retention rate of FS and FP was decreased to 34.59 ± 3.85%, and 9.93 ± 1.76%. The viscosity of FM, FS, and FP was 20.14 Pa∙s, 4.92 Pa∙s, and 0.41 Pa∙s, respectively. The freeze-drying and grinding process also damaged the lamellar microstructure of BSM. Then, animal tests showed that colitis mice intervened with FM, FS, and FP had disease activity scores of 2.03, 3.95, and 4.62. Meanwhile, FM notably changed the gut microbial composition and significantly increased propionate and butyrate levels. It seemed that the distinct colitis alleviation efficacy of BSM-based products is attributed to different hydrodynamic properties in the gut. FM had relatively higher viscosity and correspondingly high nutritional density in the gut lumen, which stimulates Firmicutes growth and promotes butyrate production, and thereby exhibited the best efficiency on protecting from colitis.
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Affiliation(s)
- Tingyang Ai
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Jiawei Wan
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Xiujuan Yu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Jiao Liu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Cong Yin
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Lindong Yang
- Conservation and Comprehensive Utilization Engineering Center of Biological Resources in Southern Minority Areas, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China;
| | - Hong Liu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Rui Qin
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
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4
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Ma S, Li X, Tao Q, Hu Q, Yang W, Kimatu BM, Ma G. The effect of in vitro digestion on the interaction between polysaccharides derived from Pleurotus eryngii and intestinal mucus. Food Sci Nutr 2024; 12:1318-1329. [PMID: 38370047 PMCID: PMC10867464 DOI: 10.1002/fsn3.3845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 02/20/2024] Open
Abstract
Pleurotus eryngii polysaccharides (PEPs) have been proven to display multiple activities through digestive system action, from which the digestion products should first interact with intestinal mucus (MUC), followed by the function of intestinal cells. Hence, possible interacting characterizations between MUC and in vitro simulated digestion products of P. eryngii polysaccharides (DPEPs) and PEP were carried out in the present study. Results showed that both PEP and DPEP could significantly interact with MUC. Moreover, digestion can modify the interaction between polysaccharides and MUC; the degree of interaction also changes with time incrementing. Viscosity could be decreased after digesting. According to the zeta potential and stability analysis result, the digestive behavior could be regular and stable between polysaccharides and MUC interactions. Following fluorescence and infrared spectra, the structure of polysaccharides and mucin might be changed by digestion between polysaccharides and MUC. The study indicates that the interaction formed between DPEP and MUC might indirectly impact the exercise and immune activities of polysaccharides and influence the transportation of other nutrients. Overall, our results, the absorption and transport pathways of PEP, can be initially revealed and may provide a novel research viewpoint on the active mechanism of PEP in the intestinal tract.
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Affiliation(s)
- Sai Ma
- Collaborative Innovation Center for Modern Grain Circulation and Safety, Jiangsu Province Engineering Research Center of Edible Fungus Preservation and Intensive Processing, College of Food Science and EngineeringNanjing University of Finance and EconomicsNanjingChina
| | - Xinyi Li
- Collaborative Innovation Center for Modern Grain Circulation and Safety, Jiangsu Province Engineering Research Center of Edible Fungus Preservation and Intensive Processing, College of Food Science and EngineeringNanjing University of Finance and EconomicsNanjingChina
| | - Qi Tao
- Collaborative Innovation Center for Modern Grain Circulation and Safety, Jiangsu Province Engineering Research Center of Edible Fungus Preservation and Intensive Processing, College of Food Science and EngineeringNanjing University of Finance and EconomicsNanjingChina
| | - Qiuhui Hu
- Collaborative Innovation Center for Modern Grain Circulation and Safety, Jiangsu Province Engineering Research Center of Edible Fungus Preservation and Intensive Processing, College of Food Science and EngineeringNanjing University of Finance and EconomicsNanjingChina
| | - Wenjian Yang
- Collaborative Innovation Center for Modern Grain Circulation and Safety, Jiangsu Province Engineering Research Center of Edible Fungus Preservation and Intensive Processing, College of Food Science and EngineeringNanjing University of Finance and EconomicsNanjingChina
| | - Benard Muinde Kimatu
- College of Food Science and TechnologyNanjing Agricultural UniversityNanjingChina
- Department of Dairy and Food Science and TechnologyEgerton UniversityEgertonKenya
| | - Gaoxing Ma
- Collaborative Innovation Center for Modern Grain Circulation and Safety, Jiangsu Province Engineering Research Center of Edible Fungus Preservation and Intensive Processing, College of Food Science and EngineeringNanjing University of Finance and EconomicsNanjingChina
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5
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Rusu AG, Niță LE, Roșca I, Croitoriu A, Ghilan A, Mititelu-Tarțău L, Grigoraș AV, Crețu BEB, Chiriac AP. Alginate-Based Hydrogels Enriched with Lavender Essential Oil: Evaluation of Physicochemical Properties, Antimicrobial Activity, and In Vivo Biocompatibility. Pharmaceutics 2023; 15:2608. [PMID: 38004586 PMCID: PMC10675056 DOI: 10.3390/pharmaceutics15112608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/24/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Owing to its antibacterial, anti-inflammatory, and antioxidant activities, in the last few years, lavender essential oil (LVO) has been used in medical applications as a promising approach for treating infected wounds. However, the practical applicability of LVO is limited by its high volatility and storage stability. This study aimed to develop a novel hybrid hydrogel by combining phytic acid (PA)-crosslinked sodium alginate (SA) and poly(itaconic anhydride-co-3,9-divinyl-2,4,8,10-tetraoxaspiro[5.5] undecane (PITAU) and evaluate its potential effectiveness as an antibacterial wound dressing after incorporating LVO. The influence of the mass ratio between SA and PITAU on the properties and stability of hydrogels was investigated. After LVO loading, the effect of oil addition to hydrogels on their functional properties and associated structural changes was studied. FTIR analysis revealed that hydrogen bonding is the primary interaction mechanism between components in the hybrid hydrogels. The morphology was analyzed using SEM, evidencing a porosity dependent on the ratio between SA and PITAU, while LVO droplets were well dispersed in the polymer blend. The release of LVO from the hydrogels was determined using UV-VIS spectroscopy, indicating a sustained release over time, independent of the LVO concentration. In addition, the hybrid hydrogels were tested for their antioxidant properties and antimicrobial activity against Gram-positive and Gram-negative bacteria. Very good antimicrobial activity was obtained in the case of sample SA_PITAU3+LVO10% against S. aureus and C. albicans. Moreover, in vivo tests showed an increased antioxidant effect of the SA_PITAU3+LVO10% hydrogel compared to the oil-free scaffold that may aid in accelerating the healing process of wounds.
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Affiliation(s)
- Alina Gabriela Rusu
- Natural Polymers, Bioactive and Biocompatible Materials Department, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (L.E.N.); (A.C.); (A.G.); (B.-E.-B.C.); (A.P.C.)
| | - Loredana Elena Niță
- Natural Polymers, Bioactive and Biocompatible Materials Department, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (L.E.N.); (A.C.); (A.G.); (B.-E.-B.C.); (A.P.C.)
| | - Irina Roșca
- Center of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania;
| | - Alexandra Croitoriu
- Natural Polymers, Bioactive and Biocompatible Materials Department, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (L.E.N.); (A.C.); (A.G.); (B.-E.-B.C.); (A.P.C.)
| | - Alina Ghilan
- Natural Polymers, Bioactive and Biocompatible Materials Department, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (L.E.N.); (A.C.); (A.G.); (B.-E.-B.C.); (A.P.C.)
| | - Liliana Mititelu-Tarțău
- Department of Pharmacology, Clinical Pharmacology and Algesiology, “Grigore T. Popa” University of Medicine and Pharmacy, Universitǎţii Street 16, 700115 Iasi, Romania;
| | - Aurica Valentin Grigoraș
- Stejarul Research Centre for Biological Sciences, National Institute of Research and Development for Biological Sciences, Alexandru cel Bun Street, 6, 610004 Piatra Neamț, Romania;
| | - Bianca-Elena-Beatrice Crețu
- Natural Polymers, Bioactive and Biocompatible Materials Department, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (L.E.N.); (A.C.); (A.G.); (B.-E.-B.C.); (A.P.C.)
| | - Aurica P. Chiriac
- Natural Polymers, Bioactive and Biocompatible Materials Department, “Petru Poni” Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (L.E.N.); (A.C.); (A.G.); (B.-E.-B.C.); (A.P.C.)
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6
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Ferreira LMB, Cardoso VMO, Dos Santos Pedriz I, Souza MPC, Ferreira NN, Chorilli M, Gremião MPD, Zucolotto V. Understanding mucus modulation behavior of chitosan oligomers and dextran sulfate combining light scattering and calorimetric observations. Carbohydr Polym 2023; 306:120613. [PMID: 36746564 DOI: 10.1016/j.carbpol.2023.120613] [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: 11/01/2022] [Revised: 12/30/2022] [Accepted: 01/18/2023] [Indexed: 01/25/2023]
Abstract
This study reports the fundamental understanding of mucus-modulatory strategies combining charged biopolymers with distinct molecular weights and surface charges. Here, key biophysical evidence supports that low-molecular-weight (Mw) polycation chitosan oligosaccharides (COSs) and high-Mw polyanion dextran sulfate (DS) exhibit distinct thermodynamic signatures upon interaction with mucin (MUC), the main protein of mucus. While the COS → MUC microcalorimetric titrations released ~14 kcal/mol and ~60 kcal/mol, the DS → MUC titrations released ~1200 and ~1450 kcal/mol at pH of 4.5 and 6.8, respectively. The MPT-2 titrations of COS → MUC and DS → MUC indicated a greater zeta potential variation at pH = 4.5 (relative variation = 815 % and 351 %, respectively) than at pH = 6.8 (relative variation = 282 % and 136 %, respectively). Further, the resultant binary (COS-MUC) and ternary (COS-DS-MUC) complexes showed opposite behavior (aggregation and charge inversion events) according to the pH environment. Most importantly, the results indicate that electrostatics could not be the driving force that governs COS-MUC interactions. To account for this finding, we proposed a two-level abstraction model. Macro features emerge collectively from individual interactions occurring at the molecular level. Therefore, to understand the outcomes of mucus modulatory strategy based on charged biopolymers it is necessary to integrate both visions into the same picture.
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Affiliation(s)
- Leonardo M B Ferreira
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo (USP), 13566-590 São Carlos, Brazil.
| | - Valéria M O Cardoso
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo (USP), 13566-590 São Carlos, Brazil
| | - Igor Dos Santos Pedriz
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo (USP), 13566-590 São Carlos, Brazil
| | - Maurício P C Souza
- Department of Drugs and Pharmaceutics, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, SP, Brazil
| | - Natália N Ferreira
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo (USP), 13566-590 São Carlos, Brazil
| | - Marlus Chorilli
- Department of Drugs and Pharmaceutics, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, SP, Brazil
| | - Maria P D Gremião
- Department of Drugs and Pharmaceutics, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, SP, Brazil
| | - Valtencir Zucolotto
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo (USP), 13566-590 São Carlos, Brazil
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7
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Cao S, Li L, Zhu B, Yao Z. Alginate modifying enzymes: An updated comprehensive review of the mannuronan C5-epimerases. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Yang C, Wang X, Hu H, Feng Y, Tang H, Zhang W, Wang J. Cold-set oat protein isolate--gellan gum binary gels with various microstructures: Fabrication, characterization, formation mechanism, and controlled release properties. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107818] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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9
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Alginate oligosaccharides enhance diffusion and activity of colistin in a mucin-rich environment. Sci Rep 2022; 12:4986. [PMID: 35322119 PMCID: PMC8943044 DOI: 10.1038/s41598-022-08927-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/10/2022] [Indexed: 11/16/2022] Open
Abstract
In a number of chronic respiratory diseases e.g. cystic fibrosis (CF) and chronic obstructive pulmonary disease (COPD), the production of viscous mucin reduces pulmonary function and represents an effective barrier to diffusion of inhaled therapies e.g. antibiotics. Here, a 2-compartment Transwell model was developed to study impaired diffusion of the antibiotic colistin across an artificial sputum (AS) matrix/medium and to quantify its antimicrobial activity against Pseudomonas aeruginosa NH57388A biofilms (alone and in combination with mucolytic therapy). High-performance liquid chromatography coupled with fluorescence detection (HPLC-FLD) revealed that the presence of AS medium significantly reduced the rate of colistin diffusion (> 85% at 48 h; p < 0.05). Addition of alginate oligosaccharide (OligoG CF-5/20) significantly improved colistin diffusion by 3.7 times through mucin-rich AS medium (at 48 h; p < 0.05). Increased diffusion of colistin with OligoG CF-5/20 was shown (using confocal laser scanning microscopy and COMSTAT image analysis) to be associated with significantly increased bacterial killing (p < 0.05). These data support the use of this model to study drug and small molecule delivery across clinically-relevant diffusion barriers. The findings indicate the significant loss of colistin and reduced effectiveness that occurs with mucin binding, and support the use of mucolytics to improve antimicrobial efficacy and lower antibiotic exposure.
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10
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Evaluating the alginate oligosaccharide (OligoG) as a therapy for Burkholderia cepacia complex cystic fibrosis lung infection. J Cyst Fibros 2022; 21:821-829. [DOI: 10.1016/j.jcf.2022.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 12/15/2021] [Accepted: 01/09/2022] [Indexed: 11/15/2022]
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11
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Li Y, Zheng Y, Zhang Y, Yang Y, Wang P, Imre B, Wong ACY, Hsieh YSY, Wang D. Brown Algae Carbohydrates: Structures, Pharmaceutical Properties, and Research Challenges. Mar Drugs 2021; 19:620. [PMID: 34822491 PMCID: PMC8623139 DOI: 10.3390/md19110620] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/27/2021] [Accepted: 10/29/2021] [Indexed: 11/17/2022] Open
Abstract
Brown algae (Phaeophyceae) have been consumed by humans for hundreds of years. Current studies have shown that brown algae are rich sources of bioactive compounds with excellent nutritional value, and are considered functional foods with health benefits. Polysaccharides are the main constituents of brown algae; their diverse structures allow many unique physical and chemical properties that help to moderate a wide range of biological activities, including immunomodulation, antibacterial, antioxidant, prebiotic, antihypertensive, antidiabetic, antitumor, and anticoagulant activities. In this review, we focus on the major polysaccharide components in brown algae: the alginate, laminarin, and fucoidan. We explore how their structure leads to their health benefits, and their application prospects in functional foods and pharmaceuticals. Finally, we summarize the latest developments in applied research on brown algae polysaccharides.
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Affiliation(s)
- Yanping Li
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.L.); (Y.Z.); (Y.Z.); (Y.Y.); (P.W.)
| | - Yuting Zheng
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.L.); (Y.Z.); (Y.Z.); (Y.Y.); (P.W.)
| | - Ye Zhang
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.L.); (Y.Z.); (Y.Z.); (Y.Y.); (P.W.)
| | - Yuanyuan Yang
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.L.); (Y.Z.); (Y.Z.); (Y.Y.); (P.W.)
| | - Peiyao Wang
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.L.); (Y.Z.); (Y.Z.); (Y.Y.); (P.W.)
| | - Balázs Imre
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan; (B.I.); (A.C.Y.W.)
| | - Ann C. Y. Wong
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan; (B.I.); (A.C.Y.W.)
| | - Yves S. Y. Hsieh
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan; (B.I.); (A.C.Y.W.)
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH), AlbaNova University Centre, 11421 Stockholm, Sweden
| | - Damao Wang
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.L.); (Y.Z.); (Y.Z.); (Y.Y.); (P.W.)
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12
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Asadpoor M, Ithakisiou GN, van Putten JPM, Pieters RJ, Folkerts G, Braber S. Antimicrobial Activities of Alginate and Chitosan Oligosaccharides Against Staphylococcus aureus and Group B Streptococcus. Front Microbiol 2021; 12:700605. [PMID: 34589067 PMCID: PMC8473942 DOI: 10.3389/fmicb.2021.700605] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/17/2021] [Indexed: 12/22/2022] Open
Abstract
The bacterial pathogens Streptococcus agalactiae (GBS) and Staphylococcus aureus (S. aureus) cause serious infections in humans and animals. The emergence of antibiotic-resistant isolates and bacterial biofilm formation entails the urge of novel treatment strategies. Recently, there is a profound scientific interest in the capabilities of non-digestible oligosaccharides as antimicrobial and anti-biofilm agents as well as adjuvants in antibiotic combination therapies. In this study, we investigated the potential of alginate oligosaccharides (AOS) and chitosan oligosaccharides (COS) as alternative for, or in combination with antibiotic treatment. AOS (2-16%) significantly decreased GBS V growth by determining the minimum inhibitory concentration. Both AOS (8 and 16%) and COS (2-16%) were able to prevent biofilm formation by S. aureus wood 46. A checkerboard biofilm formation assay demonstrated a synergistic effect of COS and clindamycin on the S. aureus biofilm formation, while AOS (2 and 4%) were found to sensitize GBS V to trimethoprim. In conclusion, AOS and COS affect the growth of GBS V and S. aureus wood 46 and can function as anti-biofilm agents. The promising effects of AOS and COS in combination with different antibiotics may offer new opportunities to combat antimicrobial resistance.
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Affiliation(s)
- Mostafa Asadpoor
- Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Georgia-Nefeli Ithakisiou
- Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Jos P. M. van Putten
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Roland J. Pieters
- Division of Medicinal Chemistry and Chemical Biology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Gert Folkerts
- Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Saskia Braber
- Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
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13
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Wang M, Chen L, Zhang Z. Potential applications of alginate oligosaccharides for biomedicine - A mini review. Carbohydr Polym 2021; 271:118408. [PMID: 34364551 DOI: 10.1016/j.carbpol.2021.118408] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/23/2021] [Accepted: 07/03/2021] [Indexed: 01/02/2023]
Abstract
Extensive research on marine algae, especially on their health-promoting properties, has been conducted. Various ingredients with potential biomedical applications have been discovered and extracted from marine algae. Alginate oligosaccharides are low molecular weight alginate polysaccharides present in cell walls of brown algae. They exhibit various health benefits such as anti-inflammatory, anti-microbial, anti-oxidant, anti-tumor and immunomodulation. Their low-toxicity, non-immunogenicity, and biodegradability make them an excellent material in biomedicine. Alginate oligosaccharides can be chemically or biochemically modified to enhance their biological activity and potential in pharmaceutical applications. This paper provides a brief overview on alginate oligosaccharides characteristics, modification patterns and highlights their vital health promoting properties.
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Affiliation(s)
- Mingpeng Wang
- College of Life Science, Qufu Normal University, Qufu 273100, China
| | - Lei Chen
- College of Life Science, Qufu Normal University, Qufu 273100, China.
| | - Zhaojie Zhang
- Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, USA
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Ci F, Jiang H, Zhang Z, Mao X. Properties and potential applications of mannuronan C5-epimerase: A biotechnological tool for modifying alginate. Int J Biol Macromol 2021; 168:663-675. [PMID: 33220370 DOI: 10.1016/j.ijbiomac.2020.11.123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 11/23/2022]
Abstract
Given the excellent characteristics of alginate, it is an industrially important polysaccharide. Mannuronan C5-epimerase (MC5E) is an alginate-modifying enzyme that catalyzes the conversion of β-D-mannuronate (M) to its C5 epimer α-L-guluronate (G) in alginate. Both the biological activities and physical properties of alginate are determined by M/G ratios and distribution patterns. Therefore, MC5E is regarded as a biotechnological tool for modifying and processing alginate. Various MC5Es derived from brown algae, Pseudomonas and Azotobacter have been isolated and characterized. With the rapid development of structural biology, the crystal structures and catalytic mechanisms of several MC5Es have been elucidated. It is necessary to comprehensively understand the research status of this alginate-modifying enzyme. In this review, the properties and potential applications of MC5Es isolated from different kinds of organisms are summarized and reviewed. Moreover, future research directions of MC5Es as well as strategies to enhance their properties are elucidated, highlighted, and prospected.
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Affiliation(s)
- Fangfang Ci
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Hong Jiang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
| | - Zhaohui Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
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15
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Solberg A, Mo IV, Aachmann FL, Schatz C, Christensen BE. Alginate-based diblock polymers: preparation, characterization and Ca-induced self-assembly. Polym Chem 2021. [DOI: 10.1039/d1py00727k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Renewable resources can provide a range of different polysaccharide blocks that can be used to prepare new types of stimuli-responsive polysaccharide-based block copolymers.
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Affiliation(s)
- Amalie Solberg
- NOBIPOL, Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, Sem Sælands vei 6/8, NO-7491 Trondheim, Norway
| | - Ingrid V. Mo
- NOBIPOL, Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, Sem Sælands vei 6/8, NO-7491 Trondheim, Norway
| | - Finn L. Aachmann
- NOBIPOL, Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, Sem Sælands vei 6/8, NO-7491 Trondheim, Norway
| | - Christophe Schatz
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Bjørn E. Christensen
- NOBIPOL, Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, Sem Sælands vei 6/8, NO-7491 Trondheim, Norway
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16
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Optimizations of In Vitro Mucus and Cell Culture Models to Better Predict In Vivo Gene Transfer in Pathological Lung Respiratory Airways: Cystic Fibrosis as an Example. Pharmaceutics 2020; 13:pharmaceutics13010047. [PMID: 33396283 PMCID: PMC7823756 DOI: 10.3390/pharmaceutics13010047] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 11/17/2022] Open
Abstract
The respiratory epithelium can be affected by many diseases that could be treated using aerosol gene therapy. Among these, cystic fibrosis (CF) is a lethal inherited disease characterized by airways complications, which determine the life expectancy and the effectiveness of aerosolized treatments. Beside evaluations performed under in vivo settings, cell culture models mimicking in vivo pathophysiological conditions can provide complementary insights into the potential of gene transfer strategies. Such models must consider multiple parameters, following the rationale that proper gene transfer evaluations depend on whether they are performed under experimental conditions close to pathophysiological settings. In addition, the mucus layer, which covers the epithelial cells, constitutes a physical barrier for gene delivery, especially in diseases such as CF. Artificial mucus models featuring physical and biological properties similar to CF mucus allow determining the ability of gene transfer systems to effectively reach the underlying epithelium. In this review, we describe mucus and cellular models relevant for CF aerosol gene therapy, with a particular emphasis on mucus rheology. We strongly believe that combining multiple pathophysiological features in single complex cell culture models could help bridge the gaps between in vitro and in vivo settings, as well as viral and non-viral gene delivery strategies.
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Ruiz-Pulido G, Medina DI. An overview of gastrointestinal mucus rheology under different pH conditions and introduction to pH-dependent rheological interactions with PLGA and chitosan nanoparticles. Eur J Pharm Biopharm 2020; 159:123-136. [PMID: 33387633 DOI: 10.1016/j.ejpb.2020.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/28/2020] [Accepted: 12/15/2020] [Indexed: 02/07/2023]
Abstract
This review discusses the physicochemical and mechanical properties of porcine gastrointestinal mucus from a rheological point of view. Considering mucus as a viscoelastic gel that functions as a biological barrier by limiting particles passage, lubricating the gastrointestinal tract, and protecting the stomach from gastric acids. The viscoelastic and protective properties of mucus are mainly produced by its mucin network, which is stabilized through electrostatic, hydrophobic and hydrogen bonding interactions. Otherwise, mucus rheology is determined by its polyanionic nature at physiological pH. At neutral pH, mucus presents a viscous behavior produced by chains crosslinking. While, at acidic pH, mucus exhibits an elastic behavior related with the extended conformation that produces mucus gelation at the stomach. Additionally, rheology studies the degree of adhesion between a polymer-mucus mixture through rheological synergism, and how it varies at different pH conditions. Finally, mucoadhesion phenomenon is exemplified with chitosan (cationic) and poly (lactic-co-glycolic) acid (anionic) polymers.
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Affiliation(s)
- Gustavo Ruiz-Pulido
- Tecnologico de Monterrey, School of Engineering and Sciences, Atizapan de Zaragoza, Estado de Mexico 52926, Mexico
| | - Dora I Medina
- Tecnologico de Monterrey, School of Engineering and Sciences, Atizapan de Zaragoza, Estado de Mexico 52926, Mexico.
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Tøndervik A, Aarstad OA, Aune R, Maleki S, Rye PD, Dessen A, Skjåk-Bræk G, Sletta H. Exploiting Mannuronan C-5 Epimerases in Commercial Alginate Production. Mar Drugs 2020; 18:E565. [PMID: 33218095 PMCID: PMC7698916 DOI: 10.3390/md18110565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 12/11/2022] Open
Abstract
Alginates are one of the major polysaccharide constituents of marine brown algae in commercial manufacturing. However, the content and composition of alginates differ according to the distinct parts of these macroalgae and have a direct impact on the concentration of guluronate and subsequent commercial value of the final product. The Azotobacter vinelandii mannuronan C-5 epimerases AlgE1 and AlgE4 were used to determine their potential value in tailoring the production of high guluronate low-molecular-weight alginates from two sources of high mannuronic acid alginates, the naturally occurring harvested brown algae (Ascophyllum nodosum, Durvillea potatorum, Laminaria hyperborea and Lessonia nigrescens) and a pure mannuronic acid alginate derived from fermented production of the mutant strain of Pseudomonas fluorescens NCIMB 10,525. The mannuronan C-5 epimerases used in this study increased the content of guluronate from 32% up to 81% in both the harvested seaweed and bacterial fermented alginate sources. The guluronate-rich alginate oligomers subsequently derived from these two different sources showed structural identity as determined by proton nuclear magnetic resonance (1H NMR), high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD) and size-exclusion chromatography with online multi-angle static laser light scattering (SEC-MALS). Functional identity was determined by minimum inhibitory concentration (MIC) assays with selected bacteria and antibiotics using the previously documented low-molecular-weight guluronate enriched alginate OligoG CF-5/20 as a comparator. The alginates produced using either source showed similar antibiotic potentiation effects to the drug candidate OligoG CF-5/20 currently in development as a mucolytic and anti-biofilm agent. These findings clearly illustrate the value of using epimerases to provide an alternative production route for novel low-molecular-weight alginates.
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Affiliation(s)
- Anne Tøndervik
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Richard Birkelands vei 3B, N-7034 Trondheim, Norway; (R.A.); (S.M.); (H.S.)
| | - Olav A. Aarstad
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, NTNU, Sem Sælands vei 6-8, N-7491 Trondheim, Norway; (O.A.A.); (G.S.-B.)
| | - Randi Aune
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Richard Birkelands vei 3B, N-7034 Trondheim, Norway; (R.A.); (S.M.); (H.S.)
| | - Susan Maleki
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Richard Birkelands vei 3B, N-7034 Trondheim, Norway; (R.A.); (S.M.); (H.S.)
| | - Philip D. Rye
- AlgiPharma AS, Industriveien 33, N-1337 Sandvika, Norway; (P.D.R.); (A.D.)
| | - Arne Dessen
- AlgiPharma AS, Industriveien 33, N-1337 Sandvika, Norway; (P.D.R.); (A.D.)
| | - Gudmund Skjåk-Bræk
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, NTNU, Sem Sælands vei 6-8, N-7491 Trondheim, Norway; (O.A.A.); (G.S.-B.)
| | - Håvard Sletta
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Richard Birkelands vei 3B, N-7034 Trondheim, Norway; (R.A.); (S.M.); (H.S.)
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19
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van Koningsbruggen-Rietschel S, Davies JC, Pressler T, Fischer R, MacGregor G, Donaldson SH, Smerud K, Meland N, Mortensen J, Fosbøl MØ, Downey DG, Myrset AH, Flaten H, Rye PD. Inhaled dry powder alginate oligosaccharide in cystic fibrosis: a randomised, double-blind, placebo-controlled, crossover phase 2b study. ERJ Open Res 2020; 6:00132-2020. [PMID: 33123558 PMCID: PMC7569163 DOI: 10.1183/23120541.00132-2020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/25/2020] [Indexed: 11/21/2022] Open
Abstract
Background OligoG is a low molecular-weight alginate oligosaccharide that improves the viscoelastic properties of cystic fibrosis (CF) mucus and disrupts biofilms, thereby potentiating the activity of antimicrobial agents. The efficacy of inhaled OligoG was evaluated in adult patients with CF. Methods A randomised, double-blind, placebo-controlled multicentre crossover study was used to demonstrate safety and efficacy of inhaled dry powder OligoG. Subjects were randomly allocated to receive OligoG 1050 mg per day (10 capsules three times daily) or matching placebo for 28 days, with 28-day washout periods following each treatment period. The primary end-point was absolute change in percentage predicted forced expiratory volume in 1 s (FEV1) at the end of 28-day treatment. The intention-to-treat (ITT) population (n=65) was defined as randomised to treatment with at least one administration of study medication and post-dosing evaluation. Results In this study, 90 adult subjects were screened and 65 were randomised. Statistically significant improvement in FEV1 was not observed in the ITT population. Adverse events included nasopharyngitis, cough and pulmonary exacerbation. The number and proportions of patients with adverse events and serious adverse events were similar between OligoG and placebo group. Conclusions Inhalation of OligoG-dry powder over 28 days was safe in adult CF subjects. Statistically significant improvement of FEV1 was not reached. The planned analyses did not indicate a significant treatment benefit with OligoG compared to placebo. Post hoc exploratory analyses showed subgroup results that indicate that further studies of OligoG in this patient population are justified. Inhalation of OligoG-DPI over 28 days was shown to be safe in adult CF subjects. Statistically significant improvement of FEV1 was not reached. Post hoc subgroup analyses support mechanism of action for OligoG and warrant further prospective studies.https://bit.ly/2PHq6Z0
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Affiliation(s)
| | - Jane C Davies
- Dept of Paediatric Respiratory Medicine, National Heart and Lung Institute, Imperial College London, and Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | | | | | - Gordon MacGregor
- Dept of Respiratory Medicine, Queen Elizabeth University Hospital, Glasgow, UK
| | | | - Knut Smerud
- SMERUD Medical Research International AS, Oslo, Norway
| | - Nils Meland
- SMERUD Medical Research International AS, Oslo, Norway
| | - Jann Mortensen
- Copenhagen CF Centre, Rigshospitalet, Copenhagen, Denmark
| | - Marie Ø Fosbøl
- Copenhagen CF Centre, Rigshospitalet, Copenhagen, Denmark
| | - Damian G Downey
- Centre for Experimental Medicine, Queen's University, Belfast, UK
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20
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Wang Y, Pi C, Feng X, Hou Y, Zhao L, Wei Y. The Influence of Nanoparticle Properties on Oral Bioavailability of Drugs. Int J Nanomedicine 2020; 15:6295-6310. [PMID: 32943863 PMCID: PMC7455773 DOI: 10.2147/ijn.s257269] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/13/2020] [Indexed: 12/14/2022] Open
Abstract
Oral administration has been the most common therapeutic regimen in various diseases because of its high safety, convenience, lower costs, and high compliance of patients. However, susceptible in hostile gastrointestinal (GI) environment, many drugs show poor permeability across GI tract mucus and intestinal epithelium with poor oral absorption and limited therapeutic efficacy. In recent years, nanoparticulate drug delivery systems (NDDS) have become a hot research spot because of their unique advantages including protecting drug from premature degrading and interacting with the physiological environment, increasing intracellular penetration, and enhancing drug absorption. However, a slight change in physicochemistry of nanoparticles can significantly impact their interaction with biological pathways and alter the oral bioavailability of drugs. Hence, this review focuses on the factors affecting oral bioavailability from two aspects. On the one hand, the factors are the biochemical and physiological barriers in oral drugs delivery. On the other hand, the factors are the nanoparticle properties including size, surface properties, and shape of nanoparticles.
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Affiliation(s)
- Yuanyuan Wang
- Central Nervous System Drug Key Laboratory of Sichuan Province, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Chao Pi
- Central Nervous System Drug Key Laboratory of Sichuan Province, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Xianhu Feng
- Central Nervous System Drug Key Laboratory of Sichuan Province, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Yi Hou
- Central Nervous System Drug Key Laboratory of Sichuan Province, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Ling Zhao
- Central Nervous System Drug Key Laboratory of Sichuan Province, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Yumeng Wei
- Central Nervous System Drug Key Laboratory of Sichuan Province, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
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21
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Instantaneous interaction of mucin with pectin- and carrageenan-coated nanoemulsions. Food Chem 2020; 309:125795. [DOI: 10.1016/j.foodchem.2019.125795] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 10/23/2019] [Accepted: 10/23/2019] [Indexed: 12/23/2022]
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22
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Urzedo AL, Gonçalves MC, Nascimento MHM, Lombello CB, Nakazato G, Seabra AB. Cytotoxicity and Antibacterial Activity of Alginate Hydrogel Containing Nitric Oxide Donor and Silver Nanoparticles for Topical Applications. ACS Biomater Sci Eng 2020; 6:2117-2134. [DOI: 10.1021/acsbiomaterials.9b01685] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Alessandro L. Urzedo
- Center for Natural and Human Sciences (CCNH), Universidade Federal do ABC (UFABC), CEP 09210-580, Santo André, São Paulo, Brazil
| | - Marcelly C. Gonçalves
- Department of Microbiology, Universidade Estadual de Londrina (UEL), Campus Universitário, CEP 86055-990, Londrina, Paraná, Brazil
| | - Mônica H. M. Nascimento
- Center for Natural and Human Sciences (CCNH), Universidade Federal do ABC (UFABC), CEP 09210-580, Santo André, São Paulo, Brazil
| | - Christiane B. Lombello
- Center for Engineering, Modeling and Applied Social Sciences, Universidade Federal do ABC (UFABC), CEP 09210-580, Santo André, São Paulo, Brazil
| | - Gerson Nakazato
- Department of Microbiology, Universidade Estadual de Londrina (UEL), Campus Universitário, CEP 86055-990, Londrina, Paraná, Brazil
| | - Amedea B. Seabra
- Center for Natural and Human Sciences (CCNH), Universidade Federal do ABC (UFABC), CEP 09210-580, Santo André, São Paulo, Brazil
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23
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Ahonen MJR, Dorrier JM, Schoenfisch MH. Antibiofilm Efficacy of Nitric Oxide-Releasing Alginates against Cystic Fibrosis Bacterial Pathogens. ACS Infect Dis 2019; 5:1327-1335. [PMID: 31136714 PMCID: PMC6773255 DOI: 10.1021/acsinfecdis.9b00016] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Colonization of the lungs by biofilm-forming pathogens is a major cause of mortality in cystic fibrosis (CF). In CF patients, these pathogens are difficult to treat due to the additional protection provided by both the biofilm exopolysaccharide matrix and thick, viscous mucus. The antibiofilm efficacy of nitric oxide (NO)-releasing alginates was evaluated against Pseudomonas aeruginosa, Burkholderia cepacia, Staphylococcus aureus, and methicillin-resistant S. aureus biofilms in both aerobic and anaerobic environments. Varying the amine precursor grafted onto alginate oligosaccharides imparted tunable NO storage (∼0.1-0.3 μmol/mg) and release kinetics (∼4-40 min half-lives) in the artificial sputum media used for biofilm testing. The NO-releasing alginates were highly antibacterial against the four CF-relevant pathogens, achieving a 5-log reduction in biofilm viability after 24 h of treatment, with biocidal efficacy dependent on NO-release kinetics. Aerobic biofilms required greater starting NO doses to achieve killing relative to the anaerobic biofilms. Relative to tobramycin (the minimum concentration of antibacterial agent required to achieve a 5-log reduction in viability after 24 h, MBEC24h, of ≥2000 μg/mL) and vancomycin (MBEC24h ≥ 1000 μg/mL), the NO-releasing alginates proved to be more effective (NO dose ≤ 520 μg/mL) regardless of growth conditions.
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Affiliation(s)
- Mona Jasmine R. Ahonen
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, CB 3290, NC 27599, United States
| | - Jamie M. Dorrier
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, CB 3290, NC 27599, United States
| | - Mark H. Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, CB 3290, NC 27599, United States
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Ahonen MJR, Hill DB, Schoenfisch MH. Nitric oxide-releasing alginates as mucolytic agents. ACS Biomater Sci Eng 2019; 5:3409-3418. [PMID: 32309634 DOI: 10.1021/acsbiomaterials.9b00482] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The excessive production of thick, viscous mucus in severe respiratory diseases leads to obstruction of the airways and provides a suitable environment for the colonization of pathogenic bacteria. The effect of nitric oxide (NO)-releasing alginates with varying NO release kinetics on the viscoelastic properties of human bronchial epithelial (HBE) mucus was evaluated as a function of the NO-release kinetics using parallel plate rheology. Low molecular weight (~5 kDa) alginates with high NO flux (~4000 ppb/mg) and sustained release (half-life ~0.3 h) proved to be most effective in reducing both mucus elasticity and viscosity (≥60% reduction for both). The efficacy of the NO-releasing alginates was shown to be dose-dependent, with high concentrations of NO-releasing alginates (~80 mg•mL-1) resulting in greater reduction of the viscosity and elasticity of the mucus samples. Greater reduction in mucus rheology was also achieved with NO-releasing alginates at lower concentrations when compared to both NO-releasing chitosan, a similarly biocompatible cationic polymer, and N-acetyl cysteine (NAC), a conventional mucolytic agent.
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Affiliation(s)
- Mona Jasmine R Ahonen
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - David B Hill
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7248, United States
| | - Mark H Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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25
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Torres O, Yamada A, Rigby NM, Hanawa T, Kawano Y, Sarkar A. Gellan gum: A new member in the dysphagia thickener family. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biotri.2019.02.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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26
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Zhang B, Hu B, Nakauma M, Funami T, Nishinari K, Draget KI, Phillips GO, Fang Y. Modulation of calcium-induced gelation of pectin by oligoguluronate as compared to alginate. Food Res Int 2019; 116:232-240. [DOI: 10.1016/j.foodres.2018.08.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/21/2018] [Accepted: 08/05/2018] [Indexed: 11/16/2022]
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27
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Hsiao SH, Hsu SH. Synthesis and Characterization of Dual Stimuli-Sensitive Biodegradable Polyurethane Soft Hydrogels for 3D Cell-Laden Bioprinting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:29273-29287. [PMID: 30133249 DOI: 10.1021/acsami.8b08362] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Three-dimensional bioprinting serves as an attractive platform to fabricate customized tissue-engineered substitutes from biomaterials and cells for the repair or replacement of injured tissues and organs. A common challenge for 3D bioprinting materials is that the structures printed from the biodegradable polymer hydrogels tend to collapse because of the poor mechanical stability. In this study, dual stimuli-responsive biodegradable polyurethane (PU) dispersions (PUA2 and PUA3) were synthesized from an eco-friendly waterborne process. Acrylate group was introduced in the PU chain end to serve as a photosensitive moiety for UV-induced cross-linking and improvement of the printability, while mixed oligodiols in the soft segment remained to be the thermosensitive moiety. The photo/thermal-induced morphological changes of PU nanoparticles were verified by dynamic light scattering, small-angle X-ray scattering, and rheological measurement of the dispersions. It was observed that these PU nanoparticles became more rod-like in shape after UV treatment and formed compact packing structures upon further heating. With the thermosensitive properties, these UV-cured PU dispersions underwent rapid thermal gelation with gel moduli in the range 0.5-2 kPa near body temperature. The rheological properties of the PU hydrogels including dynamic viscoelasticity, creep recovery, and shear thinning behavior at 37 °C were favorable for processing by microextrusion-based 3D printing and could be easily mixed with cells before printing to produce cell-laden constructs. The dual-responsive hydrogel constructs demonstrated higher resolution and shape fidelity as well as better cell viability and proliferation than the thermoresponsive control. Moreover, the softer hydrogel (PUA3) with a low modulus (<1 kPa) could offer neural stem cells a tofu-like, stable, and inductive 3D microenvironment to proliferate and differentiate. We expect that the photo/thermoresponsive biodegradable polyurethane ink may offer unique rheological properties to contribute toward the custom-made bioprinting of soft tissues.
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Affiliation(s)
- Shih-Hsiang Hsiao
- Institute of Polymer Science and Engineering , National Taiwan University , Number 1 Section 4 Roosevelt Road , Taipei , 10617 Taiwan , Republic of China
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering , National Taiwan University , Number 1 Section 4 Roosevelt Road , Taipei , 10617 Taiwan , Republic of China
- Institute of Cellular and System Medicine , National Health Research Institutes , Number 35 Keyan Road , Miaoli , 35053 Taiwan , Republic of China
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Abstract
Low and high molecular weight alginate biopolymers were chemically modified to store and release potentially therapeutic levels of nitric oxide (NO). Carbodiimide chemistry was first used to modify carboxylic acid functional groups with a series of small molecule alkyl amines. The resulting secondary amines were subsequently converted to N-diazeniumdiolate NO donors via reaction with NO gas under basic conditions. NO donor-modified alginates stored between 0.4-0.6 μmol NO·mg-1. In aqueous solution, the NO-release kinetics were diverse (0.3-13 h half-lives), dependent on the precursor amine structure. The liberated NO showed bactericidal activity against Pseudomonas aeruginosa and Staphylococcus aureus with pathogen eradication efficiency dependent on both molecular weight and NO-release kinetics. The combination of lower molecular weight (∼5 kDa) alginates with moderate NO-release durations (half-life of ∼4 h) resulted in enhanced killing of both planktonic and biofilm-based bacteria. Toxicity against human respiratory epithelial (A549) cells proved negligible at NO-releasing alginate concentrations required to achieve a 5-log reduction in viability in the biofilm eradication assay.
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Affiliation(s)
- Mona Jasmine R. Ahonen
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, CB 3290, NC 27599, United States
| | - Dakota J. Suchyta
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, CB 3290, NC 27599, United States
| | - Huanyu Zhu
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, CB 3290, NC 27599, United States
| | - Mark H. Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, CB 3290, NC 27599, United States
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29
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Yang C, Wang Y, Lu L, Unsworth L, Guan LL, Chen L. Oat protein-shellac beads: Superior protection and delivery carriers for sensitive bioactive compounds. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.11.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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30
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Murgia X, Loretz B, Hartwig O, Hittinger M, Lehr CM. The role of mucus on drug transport and its potential to affect therapeutic outcomes. Adv Drug Deliv Rev 2018; 124:82-97. [PMID: 29106910 DOI: 10.1016/j.addr.2017.10.009] [Citation(s) in RCA: 180] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/29/2017] [Accepted: 10/17/2017] [Indexed: 12/16/2022]
Abstract
A layer of mucus covers the surface of all wet epithelia throughout the human body. Mucus is a hydrogel mainly composed of water, mucins (glycoproteins), DNA, proteins, lipids, and cell debris. This complex composition yields a tenacious viscoelastic hydrogel that lubricates and protects the exposed epithelia from external threats and enzymatic degradation. The natural protective role of mucus is nowadays acknowledged as a major barrier to be overcome in non-invasive drug delivery. The heterogeneity of mucus components offers a wide range of potential chemical interaction sites for macromolecules, while the mesh-like architecture given to mucus by the intermolecular cross-linking of mucin molecules results in a dense network that physically, and in a size-dependent manner, hinders the diffusion of nanoparticles through mucus. Consequently, drug diffusion, epithelial absorption, drug bioavailability, and ultimately therapeutic outcomes of mucosal drug delivery can be attenuated.
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Affiliation(s)
- Xabier Murgia
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, 66123 Saarbrücken, Germany
| | - Brigitta Loretz
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, 66123 Saarbrücken, Germany
| | - Olga Hartwig
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, 66123 Saarbrücken, Germany
| | - Marius Hittinger
- PharmBioTec GmbH, Science Park 1 Campus D 1.1, 66123 Saarbrücken, Germany
| | - Claus-Michael Lehr
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, 66123 Saarbrücken, Germany; PharmBioTec GmbH, Science Park 1 Campus D 1.1, 66123 Saarbrücken, Germany; Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany.
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31
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Alginate Oligomers and Their Use as Active Pharmaceutical Drugs. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/978-981-10-6910-9_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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32
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Lafforgue O, Seyssiecq I, Poncet S, Favier J. Rheological properties of synthetic mucus for airway clearance. J Biomed Mater Res A 2017; 106:386-396. [DOI: 10.1002/jbm.a.36251] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 09/21/2017] [Accepted: 09/25/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Olivier Lafforgue
- Laboratoire M2P2 UMR 7340, CNRS, Ecole Centrale de Marseille, Aix-Marseille Université, 38 rue F. Joliot-Curie, Technopôle de Château-Gombert; Marseille 13451 France
| | - Isabelle Seyssiecq
- Laboratoire M2P2 UMR 7340, CNRS, Ecole Centrale de Marseille, Aix-Marseille Université, 38 rue F. Joliot-Curie, Technopôle de Château-Gombert; Marseille 13451 France
| | - Sébastien Poncet
- Laboratoire M2P2 UMR 7340, CNRS, Ecole Centrale de Marseille, Aix-Marseille Université, 38 rue F. Joliot-Curie, Technopôle de Château-Gombert; Marseille 13451 France
- Faculté de génie, Département de génie mécanique, Université de Sherbrooke, 2500 Boulevard de l'Université; Sherbrooke Quebec J1K 2R1 Canada
| | - Julien Favier
- Laboratoire M2P2 UMR 7340, CNRS, Ecole Centrale de Marseille, Aix-Marseille Université, 38 rue F. Joliot-Curie, Technopôle de Château-Gombert; Marseille 13451 France
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Lee YE, Kim H, Seo C, Park T, Lee KB, Yoo SY, Hong SC, Kim JT, Lee J. Marine polysaccharides: therapeutic efficacy and biomedical applications. Arch Pharm Res 2017; 40:1006-1020. [PMID: 28918561 PMCID: PMC7090684 DOI: 10.1007/s12272-017-0958-2] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/10/2017] [Indexed: 12/22/2022]
Abstract
The ocean contains numerous marine organisms, including algae, animals, and plants, from which diverse marine polysaccharides with useful physicochemical and biological properties can be extracted. In particular, fucoidan, carrageenan, alginate, and chitosan have been extensively investigated in pharmaceutical and biomedical fields owing to their desirable characteristics, such as biocompatibility, biodegradability, and bioactivity. Various therapeutic efficacies of marine polysaccharides have been elucidated, including the inhibition of cancer, inflammation, and viral infection. The therapeutic activities of these polysaccharides have been demonstrated in various settings, from in vitro laboratory-scale experiments to clinical trials. In addition, marine polysaccharides have been exploited for tissue engineering, the immobilization of biomolecules, and stent coating. Their ability to detect and respond to external stimuli, such as pH, temperature, and electric fields, has enabled their use in the design of novel drug delivery systems. Thus, along with the promising characteristics of marine polysaccharides, this review will comprehensively detail their various therapeutic, biomedical, and miscellaneous applications.
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Affiliation(s)
- Young-Eun Lee
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Hyeongmin Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Changwon Seo
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Taejun Park
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Kyung Bin Lee
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Seung-Yup Yoo
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Seong-Chul Hong
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Jeong Tae Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea
| | - Jaehwi Lee
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, South Korea.
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34
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Vitko M, Valerio DM, Rye PD, Onsøyen E, Myrset AH, Dessen A, Drumm ML, Hodges CA. A novel guluronate oligomer improves intestinal transit and survival in cystic fibrosis mice. J Cyst Fibros 2016; 15:745-751. [DOI: 10.1016/j.jcf.2016.06.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 06/09/2016] [Accepted: 06/11/2016] [Indexed: 12/22/2022]
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35
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Grundy MML, Edwards CH, Mackie AR, Gidley MJ, Butterworth PJ, Ellis PR. Re-evaluation of the mechanisms of dietary fibre and implications for macronutrient bioaccessibility, digestion and postprandial metabolism. Br J Nutr 2016; 116:816-33. [PMID: 27385119 PMCID: PMC4983777 DOI: 10.1017/s0007114516002610] [Citation(s) in RCA: 202] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/01/2016] [Accepted: 06/08/2016] [Indexed: 02/06/2023]
Abstract
The positive effects of dietary fibre on health are now widely recognised; however, our understanding of the mechanisms involved in producing such benefits remains unclear. There are even uncertainties about how dietary fibre in plant foods should be defined and analysed. This review attempts to clarify the confusion regarding the mechanisms of action of dietary fibre and deals with current knowledge on the wide variety of dietary fibre materials, comprising mainly of NSP that are not digested by enzymes of the gastrointestinal (GI) tract. These non-digestible materials range from intact cell walls of plant tissues to individual polysaccharide solutions often used in mechanistic studies. We discuss how the structure and properties of fibre are affected during food processing and how this can impact on nutrient digestibility. Dietary fibre can have multiple effects on GI function, including GI transit time and increased digesta viscosity, thereby affecting flow and mixing behaviour. Moreover, cell wall encapsulation influences macronutrient digestibility through limited access to digestive enzymes and/or substrate and product release. Moreover, encapsulation of starch can limit the extent of gelatinisation during hydrothermal processing of plant foods. Emphasis is placed on the effects of diverse forms of fibre on rates and extents of starch and lipid digestion, and how it is important that a better understanding of such interactions with respect to the physiology and biochemistry of digestion is needed. In conclusion, we point to areas of further investigation that are expected to contribute to realisation of the full potential of dietary fibre on health and well-being of humans.
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Affiliation(s)
- Myriam M.-L. Grundy
- Biopolymers Group, Diabetes and Nutritional Sciences Division, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK
| | - Cathrina H. Edwards
- Biopolymers Group, Diabetes and Nutritional Sciences Division, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Alan R. Mackie
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Michael J. Gidley
- ARC Centre of Excellence in Plant Cell Walls, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane 4072, Qsd, Australia
| | - Peter J. Butterworth
- Biopolymers Group, Diabetes and Nutritional Sciences Division, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK
| | - Peter R. Ellis
- Biopolymers Group, Diabetes and Nutritional Sciences Division, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK
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36
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Pritchard MF, Powell LC, Menzies GE, Lewis PD, Hawkins K, Wright C, Doull I, Walsh TR, Onsøyen E, Dessen A, Myrvold R, Rye PD, Myrset AH, Stevens HNE, Hodges LA, MacGregor G, Neilly JB, Hill KE, Thomas DW. A New Class of Safe Oligosaccharide Polymer Therapy To Modify the Mucus Barrier of Chronic Respiratory Disease. Mol Pharm 2016; 13:863-72. [PMID: 26833139 DOI: 10.1021/acs.molpharmaceut.5b00794] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The host- and bacteria-derived extracellular polysaccharide coating of the lung is a considerable challenge in chronic respiratory disease and is a powerful barrier to effective drug delivery. A low molecular weight 12-15-mer alginate oligosaccharide (OligoG CF-5/20), derived from plant biopolymers, was shown to modulate the polyanionic components of this coating. Molecular modeling and Fourier transform infrared spectroscopy demonstrated binding between OligoG CF-5/20 and respiratory mucins. Ex vivo studies showed binding induced alterations in mucin surface charge and porosity of the three-dimensional mucin networks in cystic fibrosis (CF) sputum. Human studies showed that OligoG CF-5/20 is safe for inhalation in CF patients with effective lung deposition and modifies the viscoelasticity of CF-sputum. OligoG CF-5/20 is the first inhaled polymer therapy, represents a novel mechanism of action and therapeutic approach for the treatment of chronic respiratory disease, and is currently in Phase IIb clinical trials for the treatment of CF.
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Affiliation(s)
- Manon F Pritchard
- Advanced Therapies Group, School of Dentistry, Cardiff University , Cardiff CF14 4XY, U.K
| | - Lydia C Powell
- Advanced Therapies Group, School of Dentistry, Cardiff University , Cardiff CF14 4XY, U.K
| | | | | | | | | | - Iolo Doull
- Respiratory/Cystic Fibrosis Unit, Children's Hospital for Wales , Cardiff CF14 4XW, U.K
| | - Timothy R Walsh
- Medical Microbiology, School of Medicine, College of Biomedical and Life Sciences, Cardiff University , Cardiff CF14 4EP, U.K
| | | | | | | | | | | | | | - Lee A Hodges
- Bio-Images Drug Delivery Ltd., Glasgow G4 0SF, U.K
| | | | | | - Katja E Hill
- Advanced Therapies Group, School of Dentistry, Cardiff University , Cardiff CF14 4XY, U.K
| | - David W Thomas
- Advanced Therapies Group, School of Dentistry, Cardiff University , Cardiff CF14 4XY, U.K
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37
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Abstract
In the small intestine the nature of the environment leads to a highly heterogeneous mucus layer primarily composed of the MUC2 mucin. We set out to investigate whether the soluble dietary fibre sodium alginate could alter the permeability of the mucus layer. The alginate was shown to freely diffuse into the mucus and to have minimal effect on the bulk rheology when added at concentrations below 0.1%. Despite this lack of interaction between the mucin and alginate, the addition of alginate had a marked effect on the diffusion of 500 nm probe particles, which decreased as a function of increasing alginate concentration. Finally, we passed a protein stabilised emulsion through a simulation of oral, gastric and small intestinal digestion. We subsequently showed that the addition of 0.1% alginate to porcine intestinal mucus decreased the diffusion of fluorescently labelled lipid present in the emulsion digesta. This reduction may be sufficient to reduce problems associated with high rates of lipid absorption such as hyperlipidaemia. There are no specific interactions between alginate and intestinal mucus. Mucus rheology was hardly altered by small additions of alginate. Alginate freely diffused into mucus and reduced diffusion of 500 nm beads. Intestinal mucus permeability was decreased by a factor of two.
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38
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Steric and interactive barrier properties of intestinal mucus elucidated by particle diffusion and peptide permeation. Eur J Pharm Biopharm 2015; 95:136-43. [DOI: 10.1016/j.ejpb.2015.01.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 01/10/2015] [Accepted: 01/14/2015] [Indexed: 02/06/2023]
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39
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Liao H, Ai W, Zhang K, Nakauma M, Funami T, Fang Y, Nishinari K, Draget KI, Phillips GO. Mechanisms of oligoguluronate modulating the calcium-induced gelation of alginate. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.08.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Wu N, Zhang X, Li F, Zhang T, Gan Y, Li J. Spray-dried powders enhance vaginal siRNA delivery by potentially modulating the mucus molecular sieve structure. Int J Nanomedicine 2015; 10:5383-96. [PMID: 26347257 PMCID: PMC4554414 DOI: 10.2147/ijn.s87978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Vaginal small interfering RNA (siRNA) delivery provides a promising strategy for the prevention and treatment of vaginal diseases. However, the densely cross-linked mucus layer on the vaginal wall severely restricts nanoparticle-mediated siRNA delivery to the vaginal epithelium. In order to overcome this barrier and enhance vaginal mucus penetration, we prepared spray-dried powders containing siRNA-loaded nanoparticles. Powders with Pluronic F127 (F127), hydroxypropyl methyl cellulose (HPMC), and mannitol as carriers were obtained using an ultrasound-assisted spray-drying technique. Highly dispersed dry powders with diameters of 5-15 μm were produced. These powders showed effective siRNA protection and sustained release. The mucus-penetrating properties of the powders differed depending on their compositions. They exhibited different potential of opening mesh size of molecular sieve in simulated vaginal mucus system. A powder formulation with 0.6% F127 and 0.1% HPMC produced the maximum increase in the pore size of the model gel used to simulate vaginal mucus by rapidly extracting water from the gel and interacting with the gel; the resulting modulation of the molecular sieve effect achieved a 17.8-fold improvement of siRNA delivery in vaginal tract and effective siRNA delivery to the epithelium. This study suggests that powder formulations with optimized compositions have the potential to alter the steric barrier posed by mucus and hold promise for effective vaginal siRNA delivery.
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Affiliation(s)
- Na Wu
- School of Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China ; Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Xinxin Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Feifei Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Tao Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Yong Gan
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Juan Li
- School of Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
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41
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Probing the Mucoadhesive Interactions Between Porcine Gastric Mucin and Some Water-Soluble Polymers. Macromol Biosci 2015; 15:1546-53. [DOI: 10.1002/mabi.201500158] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 06/03/2015] [Indexed: 11/07/2022]
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42
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Wang X, Du M, Han H, Song Y, Zheng Q. Boundary lubrication by associative mucin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4733-40. [PMID: 25843576 DOI: 10.1021/acs.langmuir.5b00604] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Mucus lubricants are widely distributed in living organisms. Such lubricants consist of a gel structure constructed by associative mucin. However, limited tribological studies exist on associative mucin fluids. The present research is the first to investigate the frictional behavior of a typical intact vertebrate mucin (loach skin mucin), which can recover the gel structure of mucus via hydrophobic association under physiological conditions (5-10 mg/mL loach skin mucin dissolved in water). Both rough hydrophobic and hydrophilic polydimethylsiloxane (PDMS) rubber plates were used as friction substrates. Up to 10 mg/mL loach skin mucin dissolved in water led to a 10-fold reduction in boundary friction of the two substrates. The boundary-lubricating ability for hydrophilic PDMS decreased with rubbing time, whereas that for hydrophobic PDMS remained constant. The boundary-lubricating abilities of the mucin on hydrophobic PDMS and hydrophilic PDMS showed almost similar responses toward changing concentration or sodium dodecyl sulfate (SDS). The mucin fluids reduced boundary friction coefficients (μ) only at concentrations (c) in which intermucin associations were formed, with a relationship shown as μ ∼ c(-0.7). Destroying intermucin associations by SDS largely impaired the boundary-lubricating ability. Results reveal for the first time that intermolecular association of intact mucin in bulk solution largely enhances boundary lubrication, whereas tightly adsorbed layer plays a minor role in the lubrication. This study indicates that associated mucin should contribute considerably to the lubricating ability of biological mucus in vivo.
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Affiliation(s)
- Xiang Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Miao Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hongpeng Han
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yihu Song
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiang Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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43
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Menchicchi B, Fuenzalida JP, Hensel A, Swamy MJ, David L, Rochas C, Goycoolea FM. Biophysical Analysis of the Molecular Interactions between Polysaccharides and Mucin. Biomacromolecules 2015; 16:924-35. [DOI: 10.1021/bm501832y] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- B. Menchicchi
- Westfälische Wilhelms-Universität Münster, Institute of Plant Biology and Biotechnology (IBBP), Schlossgarten 3, 48149 - Münster, Germany
| | - J. P. Fuenzalida
- Westfälische Wilhelms-Universität Münster, Institute of Plant Biology and Biotechnology (IBBP), Schlossgarten 3, 48149 - Münster, Germany
| | - A. Hensel
- Westfälische Wilhelms-Universität Münster, Institute for Pharmaceutical Biology and Phytochemistry (IPBP), Hittorfstraße 56, D-48149 - Münster, Germany
| | - M. J. Swamy
- University of Hyderabad, School of Chemistry, Hyderabad, Andra Pradesh, India
| | - L. David
- Université de Lyon, Université Claude Bernard Lyon 1, Laboratoire Ingénierie des Matériaux Polymères,
IMP CNRS UMR 5223, 15
Boulevard A. Latarjet, 69622 Villeurbanne Cedex, France
| | - C. Rochas
- CERMAV-CNRS, Domaine
Universitaire, BP 68, F-38402 Saint-Martin-d’Heres, France
| | - F. M. Goycoolea
- Westfälische Wilhelms-Universität Münster, Institute of Plant Biology and Biotechnology (IBBP), Schlossgarten 3, 48149 - Münster, Germany
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44
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Direct Determination of Chitosan–Mucin Interactions Using a Single-Molecule Strategy: Comparison to Alginate–Mucin Interactions. Polymers (Basel) 2015. [DOI: 10.3390/polym7020161] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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45
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Jain D, Bar-Shalom D. Alginate drug delivery systems: application in context of pharmaceutical and biomedical research. Drug Dev Ind Pharm 2014; 40:1576-84. [DOI: 10.3109/03639045.2014.917657] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Nordgård CT, Nonstad U, Olderøy MØ, Espevik T, Draget KI. Alterations in mucus barrier function and matrix structure induced by guluronate oligomers. Biomacromolecules 2014; 15:2294-300. [PMID: 24827030 DOI: 10.1021/bm500464b] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The effect of guluronate oligomers on the barrier properties of mucous matrices was investigated in terms of the mobility of nanoparticles in mucous matrices by fluorescence recovery after photobleaching (FRAP), cellular uptake of nanoparticles in mucus secreting cells (HT29-MTX), and mucin matrix architecture by scanning electron microscopy (SEM). Guluronate oligomers improved nanoparticle mobility in both native and highly purified mucus matrices and improved cellular uptake of nanoparticles through a mucus layer. Addition of guluronate oligomers to mucin matrices resulted in a decrease in the density of network cross-links and an increase in matrix pore size. Based on these data, we conclude that guluronate oligomers are able to improve nanoparticle mobility in several mucus matrices and alter network architecture in mucin matrices in a manner that suggests a reduction in barrier function. As such, there may be a potential application for guluronate oligomers in mucosal delivery of nanomedicines.
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Affiliation(s)
- Catherine Taylor Nordgård
- Departments of †Biotechnology, ‡Cancer Research and Molecular Medicine, and §Physics, The Norwegian University of Science and Technology , NTNU, NO-7491 Trondheim, Norway
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Powell LC, Pritchard MF, Emanuel C, Onsøyen E, Rye PD, Wright CJ, Hill KE, Thomas DW. A Nanoscale Characterization of the Interaction of a Novel Alginate Oligomer with the Cell Surface and Motility ofPseudomonas aeruginosa. Am J Respir Cell Mol Biol 2014; 50:483-92. [DOI: 10.1165/rcmb.2013-0287oc] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Feng C, Song R, Sun G, Kong M, Bao Z, Li Y, Cheng X, Cha D, Park H, Chen X. Immobilization of Coacervate Microcapsules in Multilayer Sodium Alginate Beads for Efficient Oral Anticancer Drug Delivery. Biomacromolecules 2014; 15:985-96. [DOI: 10.1021/bm401890x] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Chao Feng
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
| | - Ruixi Song
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
| | - Guohui Sun
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
| | - Ming Kong
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
| | - Zixian Bao
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
| | - Yang Li
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
| | - Xiaojie Cheng
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
| | - Dongsu Cha
- Graduate
School Biotechnology, Korea University, 1,5-Ka, Anam-Dong, Sungbuk-Ku, Seoul 136-701, South Korea
| | - Hyunjin Park
- Graduate
School Biotechnology, Korea University, 1,5-Ka, Anam-Dong, Sungbuk-Ku, Seoul 136-701, South Korea
| | - Xiguang Chen
- College
of Marine Life Science, Ocean University of China, Yushan Road, Qingdao 266003, Shandong Province, People’s Republic of China
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Murgia X, de Souza Carvalho C, Lehr CM. Overcoming the pulmonary barrier: new insights to improve the efficiency of inhaled therapeutics. EUROPEAN JOURNAL OF NANOMEDICINE 2014. [DOI: 10.1515/ejnm-2014-0019] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Roberts JL, Khan S, Emanuel C, Powell LC, Pritchard MF, Onsøyen E, Myrvold R, Thomas DW, Hill KE. An in vitro study of alginate oligomer therapies on oral biofilms. J Dent 2013; 41:892-9. [PMID: 23907083 DOI: 10.1016/j.jdent.2013.07.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 07/12/2013] [Accepted: 07/18/2013] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVES The in vitro effect of a novel, oligosaccharide nanomedicine OligoG against oral pathogen-related biofilms, both alone and in the presence of the conventional anti-bacterial agent triclosan, was evaluated. METHODS The effect of OligoG±triclosan was assessed against established Streptococcus mutans and Porphyromonas gingivalis biofilms by bacterial counts and image analysis using LIVE/DEAD(®) staining and atomic force microscopy (AFM). The effect of triclosan and OligoG surface pre-treatments on bacterial attachment to titanium and polymethylmethacrylate was also studied. RESULTS OligoG potentiated the antimicrobial effect of triclosan, particularly when used in combination at 0.3% against S. mutans grown in artificial saliva. OligoG was less effective against established P. gingivalis biofilms. However, attachment of P. gingivalis, to titanium in particular, was significantly reduced after surface pre-treatment with OligoG and triclosan at 0.01% when compared to controls. Light microscopy and AFM showed that OligoG was biocidal to P. gingivalis, but not S. mutans. CONCLUSIONS OligoG and triclosan when used in combination produced an enhanced antimicrobial effect against two important oral pathogens and reduced bacterial attachment to dental materials such as titanium, even at reduced triclosan concentrations. Whilst the use of triclosan against oral bacteria has been widely documented, its synergistic use with OligoG described here, has not previously been reported. The use of lower concentrations of triclosan, if used in combination therapy with OligoG, could have environmental benefits. CLINICAL IMPORTANCE The potentiation of antimicrobial agents by naturally occurring oligomers such as OligoG may represent a novel, safe adjunct to conventional oral hygiene and periodontal therapy. The ability of OligoG to inhibit the growth and impair bacterial adherence highlights its potential in the management of peri-implantitis.
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Affiliation(s)
- J L Roberts
- Wound Biology Group, Tissue Engineering and Reparative Dentistry, Cardiff University School of Dentistry, Heath Park, Cardiff CF14 4XY, UK
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