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Hu H, Gao H, Wang K, Jin Z, Zheng W, Wang Q, Yang Y, Yu C, Xu K, Gao C. Effective treatment of traumatic brain injury by injection of a selenium-containing ointment. Acta Biomater 2024; 187:161-171. [PMID: 39236795 DOI: 10.1016/j.actbio.2024.08.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 08/22/2024] [Accepted: 08/28/2024] [Indexed: 09/07/2024]
Abstract
Traumatic brain injury (TBI) is an incurable and overwhelming disease accompanied with serve disability and huge financial burden, where the overproduced reactive oxygen species (ROS) can exacerbate the secondary injury, leading to massive apoptosis of neurons. In this study, β-cyclodextrin (CD)-capped hyperbranched polymers containing selenium element (HSE-CD) were crosslinked with CD-modified hyaluronic acid (HA-CD) and amantadine-modified hyaluronic acid (HA-AD) to obtain a ROS-responsive ointment (R-O). The structures of synthesized polymers were characterized with 1H nuclear magnetic resonance, and the properties of ointment were investigated with rheology and antioxidation. Compared to non-ROS-responsive ointment (N-O), the R-O ointment had stronger efficiency in decreasing the ROS level in BV2 cells in vitro. In a controlled rat cortical impact (CCI) model, the R-O ointment could relieve the DNA damage and decrease apoptosis in injured area via reducing the ROS level. Besides, after the R-O treatment, the rats showed significantly less activated astrocytes and microglia, a lower level of pro-inflammatory cytokines and a higher ratio of M2/M1 macrophage and microglia. Moreover, compared to the TBI group the R-O ointment promoted the doublecortin (DCX) expression and tissue structure integrity around the cavity, and promoted the recovery of nerve function post TBI. STATEMENT OF SIGNIFICANCE: Traumatic brain injury (TBI) is an incurable and overwhelming disease, leading to severe disability and huge social burden, where reactive oxygen species (ROS) are considered as one of the most significant factors in the secondary injury of TBI. A ROS responsive supramolecular ointment containing di-selenide bonds was injected in rats with controlled cortical impact. It relieved the DNA damage and decreased apoptosis in the injured area via reducing the ROS levels, downregulated neuroinflammation, and improved neurological recovery of TBI in vivo. This designed self-adaptive biomaterial effectively regulated the pathological microenvironment in injured tissue, and achieved better therapeutic effect.
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Affiliation(s)
- Haijun Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Huan Gao
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, China
| | - Kai Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zeyuan Jin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Weiwei Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiaoxuan Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yufang Yang
- Key Laboratory of Biomedical Engineering of Education Ministry, Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou 310027, China
| | - Chaonan Yu
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, China
| | - Kedi Xu
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, China; Key Laboratory of Biomedical Engineering of Education Ministry, Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou 310027, China.
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China; Center for Healthcare Materials, Shaoxing Institute, Zhejiang University, Shaoxing 312099, China.
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Lierova A, Kasparova J, Filipova A, Cizkova J, Pekarova L, Korecka L, Mannova N, Bilkova Z, Sinkorova Z. Hyaluronic Acid: Known for Almost a Century, but Still in Vogue. Pharmaceutics 2022; 14:838. [PMID: 35456670 PMCID: PMC9029726 DOI: 10.3390/pharmaceutics14040838] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/03/2022] [Accepted: 04/04/2022] [Indexed: 02/04/2023] Open
Abstract
Hyaluronic acid (HA) has a special position among glycosaminoglycans. As a major component of the extracellular matrix (ECM). This simple, unbranched polysaccharide is involved in the regulation of various biological cell processes, whether under physiological conditions or in cases of cell damage. This review summarizes the history of this molecule's study, its distinctive metabolic pathway in the body, its unique properties, and current information regarding its interaction partners. Our main goal, however, is to intensively investigate whether this relatively simple polymer may find applications in protecting against ionizing radiation (IR) or for therapy in cases of radiation-induced damage. After exposure to IR, acute and belated damage develops in each tissue depending upon the dose received and the cellular composition of a given organ. A common feature of all organ damage is a distinct change in composition and structure of the ECM. In particular, the important role of HA was shown in lung tissue and the variability of this flexible molecule in the complex mechanism of radiation-induced lung injuries. Moreover, HA is also involved in intermediating cell behavior during morphogenesis and in tissue repair during inflammation, injury, and would healing. The possibility of using the HA polymer to affect or treat radiation tissue damage may point to the missing gaps in the responsible mechanisms in the onset of this disease. Therefore, in this article, we will also focus on obtaining answers from current knowledge and the results of studies as to whether hyaluronic acid can also find application in radiation science.
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Affiliation(s)
- Anna Lierova
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, 500 01 Hradec Kralove, Czech Republic; (A.F.); (J.C.); (L.P.); (Z.S.)
| | - Jitka Kasparova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice, Czech Republic; (J.K.); (L.K.); (N.M.); (Z.B.)
| | - Alzbeta Filipova
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, 500 01 Hradec Kralove, Czech Republic; (A.F.); (J.C.); (L.P.); (Z.S.)
| | - Jana Cizkova
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, 500 01 Hradec Kralove, Czech Republic; (A.F.); (J.C.); (L.P.); (Z.S.)
| | - Lenka Pekarova
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, 500 01 Hradec Kralove, Czech Republic; (A.F.); (J.C.); (L.P.); (Z.S.)
| | - Lucie Korecka
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice, Czech Republic; (J.K.); (L.K.); (N.M.); (Z.B.)
| | - Nikola Mannova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice, Czech Republic; (J.K.); (L.K.); (N.M.); (Z.B.)
| | - Zuzana Bilkova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice, Czech Republic; (J.K.); (L.K.); (N.M.); (Z.B.)
| | - Zuzana Sinkorova
- Department of Radiobiology, Faculty of Military Health Sciences, University of Defence, 500 01 Hradec Kralove, Czech Republic; (A.F.); (J.C.); (L.P.); (Z.S.)
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Han Y, Li D, Li D, Chen W, Mu S, Chen Y, Chai J. Impact of refractive index increment on the determination of molecular weight of hyaluronic acid by muti-angle laser light-scattering technique. Sci Rep 2020; 10:1858. [PMID: 32024914 PMCID: PMC7002679 DOI: 10.1038/s41598-020-58992-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 01/23/2020] [Indexed: 02/04/2023] Open
Abstract
Hyaluronic acid (HA) is applied in a number of medical applications and HA of different molecular weight (Mw) are used in different pharmaceutical preparations. In determination of Mw by muti-angle laser light-scattering (MALS), refractive index increment (dn/dc) is an important parameter for accuracy. Herein, the influence of dn/dc on the Mw of HA in stroke-physiological saline solution is investigated by MALS in this work. Additionally, the Mw variation of HA in the manufacturing process of preparations is measured. It is shown that each HA sample corresponds to a specific value of dn/dc, which is varied from 1.38 to 1.74 L/g with the Mw increasing from 13.5 to 2840 kDa in solution. It is indicated by the results from both MALS approach and viscometry that appropriate dn/dc should be selected for Mw determination. In steam sterilization process of preparations at 121 °C, the Mw and conformation of HA can be accurately and rapidly determined by MALS. This work provides a precise method to determine the Mw of HA in the medical applications and preparation industries.
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Affiliation(s)
- Ying Han
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P.R. China
| | - Dejie Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P.R. China
- Center of Research and Development, Bloomage Biotechnology Corporation Limited, Jinan, 250100, P.R. China
| | - Deqiang Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P.R. China
| | - Wenwen Chen
- Center of Research and Development, Bloomage Biotechnology Corporation Limited, Jinan, 250100, P.R. China
| | - Shu'e Mu
- Center of Research and Development, Bloomage Biotechnology Corporation Limited, Jinan, 250100, P.R. China
| | - Yuqin Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P.R. China.
| | - Jinling Chai
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P.R. China.
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Madkhali A, Chernos M, Fakhraei S, Grecov D, Kwok E. Osteoarthritic synovial fluid and correlations with protein concentration. Biorheology 2016; 53:123-136. [DOI: 10.3233/bir-15086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Anwar Madkhali
- Department of Mechanical Engineering, University of British Columbia, Vancouver, BC, Canada
- Biomedical Engineering Program, University of British Columbia, Vancouver, BC, Canada
| | - Michael Chernos
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, BC, Canada
- Biomedical Engineering Program, University of British Columbia, Vancouver, BC, Canada
| | - Samin Fakhraei
- Department of Mechanical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Dana Grecov
- Department of Mechanical Engineering, University of British Columbia, Vancouver, BC, Canada
- Biomedical Engineering Program, University of British Columbia, Vancouver, BC, Canada
| | - Ezra Kwok
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, BC, Canada
- Biomedical Engineering Program, University of British Columbia, Vancouver, BC, Canada
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Mazeau K, Rinaudo M. Comparative properties of hyaluronan and chitosan in aqueous environment. POLYMER SCIENCE SERIES C 2012. [DOI: 10.1134/s1811238212070041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Goudoulas TB, Kastrinakis EG, Nychas SG, Papazoglou LG, Kazakos GM, Kosmas PV. Rheological Study of Synovial Fluid Obtained from Dogs: Healthy, Pathological, and Post-Surgery, after Spontaneous Rupture of Cranial Cruciate Ligament. Ann Biomed Eng 2009; 38:57-65. [DOI: 10.1007/s10439-009-9832-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Accepted: 10/27/2009] [Indexed: 12/23/2022]
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Soltés L, Kogan G, Stankovska M, Mendichi R, Rychlý J, Schiller J, Gemeiner P. Degradation of High-Molar-Mass Hyaluronan and Characterization of Fragments. Biomacromolecules 2007; 8:2697-705. [PMID: 17691842 DOI: 10.1021/bm070309b] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A sample of high-molar mass hyaluronan was oxidized by seven oxidative systems involving hydrogen peroxide, cupric chloride, ascorbic acid, and sodium hypochlorite in different concentrations and combinations. The process of the oxidative degradation of hyaluronan was monitored by rotational viscometry, while the fragments produced were investigated by size-exclusion chromatography, matrix-assisted laser desorption ionization-time-of-flight mass spectrometry, and non-isothermal chemiluminometry. The results obtained imply that the degradation of hyaluronan by these oxidative systems, some of which resemble the chemical combinations present in vivo in the inflamed joint, proceeds predominantly via hydroxyl radicals. The hyaluronan fragmentation occurred randomly and produced species with rather narrow and unimodal distribution of molar mass. Oxidative degradation not only reduces the molecular size of hyaluronan but also modifies its component monosaccharides, generating polymer fragments that may have properties substantially different from those of the original macromolecule.
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Affiliation(s)
- L Soltés
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, SK-84104 Bratislava, Slovakia
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Stern R, Kogan G, Jedrzejas MJ, Soltés L. The many ways to cleave hyaluronan. Biotechnol Adv 2007; 25:537-57. [PMID: 17716848 DOI: 10.1016/j.biotechadv.2007.07.001] [Citation(s) in RCA: 290] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2007] [Revised: 07/06/2007] [Accepted: 07/11/2007] [Indexed: 01/30/2023]
Abstract
Hyaluronan is being used increasingly as a component of artificial matrices and in bioengineering for tissue scaffolding. The length of hyaluronan polymer chains is now recognized as informational, involving a wide variety of size-specific functions. Inadvertent scission of hyaluronan can occur during the process of preparation. On the other hand, certain size-specific hyaluronan fragments may be desirable, endowing the finished bioengineered product with specific properties. In this review, the vast arrays of reactions that cause scission of hyaluronan polymers is presented, including those on an enzymatic, free radical, and chemical basis.
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Affiliation(s)
- Robert Stern
- Department of Pathology, School of Medicine, UCSF Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94143-0511, USA
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Maleki A, Kjøniksen AL, Nyström B. Anomalous Viscosity Behavior in Aqueous Solutions of Hyaluronic Acid. Polym Bull (Berl) 2007. [DOI: 10.1007/s00289-007-0760-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Mendoza G, Alvarez AI, Pulido MM, Molina AJ, Merino G, Real R, Fernandes P, Prieto JG. Inhibitory effects of different antioxidants on hyaluronan depolymerization. Carbohydr Res 2006; 342:96-102. [PMID: 17123492 DOI: 10.1016/j.carres.2006.10.027] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2006] [Revised: 10/25/2006] [Accepted: 10/27/2006] [Indexed: 11/18/2022]
Abstract
Hyaluronan (HA) was depolymerized by hydroxyl radicals generated from hydrogen peroxide and cupric ions. Inhibition of HA degradation by four well-known antioxidants was investigated, as HA can scavenge reactive oxygen species (ROS). Change in hyaluronan molecular weight was observed by size-exclusion chromatography. Inhibition of HA degradation was estimated from the retention times observed. It was found that HA degradation was inhibited in a clearly concentration-dependent manner by mannitol, thiourea and vinpocetine. Propofol also inhibited the depolymerization, but its concentration-dependent effect was not so clear. The antioxidant concentrations at which HA degradation was decreased by 50% were 42 microM for thiourea; 1.35 microM for vinpocetine; and 0.39 microM for propofol. A concentration of 26.51 mM of mannitol was needed to attain the same inhibitory effect. Although many factors are involved in a therapeutic response, the results obtained in this study support the idea that HA may be protected from ROS attack by the concomitant use of well-known antioxidants.
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Affiliation(s)
- Gracia Mendoza
- Department of Physiology, University of Leon, E-24071 Leon, Spain
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Soltés L, Mendichi R, Kogan G, Schiller J, Stankovska M, Arnhold J. Degradative action of reactive oxygen species on hyaluronan. Biomacromolecules 2006; 7:659-68. [PMID: 16529395 DOI: 10.1021/bm050867v] [Citation(s) in RCA: 222] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Many human diseases are associated with harmful action of reactive oxygen species (ROS). These species are involved in the degradation of essential tissue or related components. One of such components is synovial fluid that contains a high-molecular-weight polymer--hyaluronan (HA). Uninhibited and/or inhibited hyaluronan degradation by the action of various ROS has been studied in many in vitro models. In these studies, the change of the molecular weight of HA or a related parameter, such as HA solution viscosity, has been used as a marker of inflicted damage. The aim of the presented review is to briefly summarize the available data. Their correct interpretation could contribute to the implementation of modern methods of evaluation of the antioxidative capacity of natural and synthetic substances and prospective drugs--potential inflammatory disease modifying agents. Another focus of this review is to evaluate briefly the impact of different available analytical techniques currently used to investigate the structure of native high-molecular-weight hyaluronan and/or of its fragments.
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Affiliation(s)
- L Soltés
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, SK-84104 Bratislava, Slovak Republic.
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Falcone SJ, Palmeri DM, Berg RA. Rheological and cohesive properties of hyaluronic acid. J Biomed Mater Res A 2006; 76:721-8. [PMID: 16315193 DOI: 10.1002/jbm.a.30623] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Hyaluronic acid (HA) is a naturally occurring polysaccharide with unique biomedical applications. We have studied the cohesive and rheological properties of HA of three molecular weights (0.35 x 10(6) -1.80 x 10(6) Da) and found that the cohesive nature of HA was highly dependent on molecular weight and solution concentration. To a first approximation, the cohesive nature of HA in solution correlates with concentration, independent of molecular weight. Several rheological parameters correlated with molecular weight: zero shear viscosity, complex viscosity, and the complex viscosity at the crossover point. The cohesive properties of the HA solutions, measured by dynamic aspiration (Poyer et al, J Cataract Refract Surg 1998;24:1130-1135), were found to decrease as the zero shear viscosity increases. The cohesive properties of HA polymer in solution were found to correlate with the high frequency complex viscosity and high frequency loss modulus independent of molecular weight.
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Affiliation(s)
- Samuel J Falcone
- FzioMed, Inc., 231 Bonetti Drive, San Luis Obispo, California 93401, USA
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Song L, Zhao B, Xie J, Zhao J. Interactions of hypocrellin B with hyaluronan and photo-induced interactions. Biochim Biophys Acta Gen Subj 2006; 1760:333-9. [PMID: 16481115 DOI: 10.1016/j.bbagen.2006.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2005] [Revised: 12/27/2005] [Accepted: 01/04/2006] [Indexed: 10/25/2022]
Abstract
In the current work, the molecular recognition and interaction were studied by taking advantages of the environmentally sensitive fluorescence of hypocrellin B (HB) and the structural knowledge of hyaluronan (HYA), a polysaccharide over-expressed in tumor cells or tissues. Interestingly, it was found that, binding to HYA, the absorbance of HB would be greatly strengthened, suggesting HB fitting to a hydrophobic environment in HYA, while the fluorescence seriously quenched at pH 7.0, which was very distinct from the binding of HB to proteins, liposome, other polysaccharide molecules or HYA at pH 2.0. Synchronously, the particle size of HYA would become bigger after interaction with HB, suggesting an aggregation of HYA. Considering the spectral responses of HB and the particle size change of HYA, a specific interaction of HB with HYA was proposed, that is, an HB molecule would link two HYA molecules not only by hydrophobic interaction but also by formations of intermolecular hydrogen bonds at physiological pH values. Furthermore, the estimated binding constant suggests a quite high affinity of HB to HYA. Besides, an oxygen-dependent degradation of HYA and photobleaching of HB were observed via photosensitization of HB.
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Affiliation(s)
- Liming Song
- Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
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Prieto JG, Pulido MM, Zapico J, Molina AJ, Gimeno M, Coronel P, Alvarez AI. Comparative study of hyaluronic derivatives: rheological behaviour, mechanical and chemical degradation. Int J Biol Macromol 2005; 35:63-9. [PMID: 15769517 DOI: 10.1016/j.ijbiomac.2004.12.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2004] [Revised: 12/01/2004] [Accepted: 12/02/2004] [Indexed: 01/11/2023]
Abstract
Depolymerisation by oxytetracycline (OTC) as well as the progressive cleavage of hyaluronic acid induced by ultrasound was investigated in nine commercially available hyaluronic polymers. Sample solutions differed in molecular weight, from 500 to 7000 kDa, and in their source. The hyaluronic acid concentration in each sample was analysed by HPLC. The concentration range was over 8.39-10.18 mg ml(-1) in samples with a nominal concentration of 1%, and 14.05 mg ml(-1) in one sample with a nominal concentration of 1.5%. It was found that stability was dependent on both molecular weight and the concentration of the samples. The rheological parameters n (power law index) and K (consistency coefficient) were good predictors regarding the degradation behaviour. Although many factors are involved in obtaining a therapeutic response, the results obtained in this work support the notion that both mechanical and chemical degradation are reduced in hyaluronate solutions with low molecular weight, the final concentration of the product being a critical factor.
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Affiliation(s)
- J G Prieto
- Department of Physiology, University of Leon, Leon 24071, Spain
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Al-Assaf S, Phillips G, Gunning A, Morris V. Molecular interaction studies of the hyaluronan derivative, hylan A using atomic force microscopy. Carbohydr Polym 2002. [DOI: 10.1016/s0144-8617(01)00185-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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