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Zhang H, Lin X, Cao X, Wang Y, Wang J, Zhao Y. Developing natural polymers for skin wound healing. Bioact Mater 2024; 33:355-376. [PMID: 38282639 PMCID: PMC10818118 DOI: 10.1016/j.bioactmat.2023.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/02/2023] [Accepted: 11/16/2023] [Indexed: 01/30/2024] Open
Abstract
Natural polymers are complex organic molecules that occur in the natural environment and have not been subjected to artificial synthesis. They are frequently encountered in various creatures, including mammals, plants, and microbes. The aforementioned polymers are commonly derived from renewable sources, possess a notable level of compatibility with living organisms, and have a limited adverse effect on the environment. As a result, they hold considerable significance in the development of sustainable and environmentally friendly goods. In recent times, there has been notable advancement in the investigation of the potential uses of natural polymers in the field of biomedicine, specifically in relation to natural biomaterials that exhibit antibacterial and antioxidant characteristics. This review provides a comprehensive overview of prevalent natural polymers utilized in the biomedical domain throughout the preceding two decades. In this paper, we present a comprehensive examination of the components and typical methods for the preparation of biomaterials based on natural polymers. Furthermore, we summarize the application of natural polymer materials in each stage of skin wound repair. Finally, we present key findings and insights into the limitations of current natural polymers and elucidate the prospects for their future development in this field.
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Affiliation(s)
- Han Zhang
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Xiang Lin
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Xinyue Cao
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yu Wang
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Jinglin Wang
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yuanjin Zhao
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Shenzhen Research Institute, Southeast University, Shenzhen, 518038, China
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2
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Wang X, Hua F, Xie X, Wu Y, Sun W, Jiang Z, Zhang J, Luo X. Infrared Raman spectroscopy enables noninvasive biochemical assessment of skin tissue and the thermal stability. Heliyon 2023; 9:e21974. [PMID: 38034814 PMCID: PMC10684364 DOI: 10.1016/j.heliyon.2023.e21974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 12/02/2023] Open
Abstract
Raman-active modes of human skin and pork belly have been studied systematically by a near-infrared Raman spectrometer with an exciting laser of 1064 nm. The main components and quantitative determination of pork belly are extracted by fitting the Raman spectra with the normalized Raman spectra of biochemical reagents such as collagen, elastin, triolein, fibronectin, fibrin, and hyaluronic acid. It demonstrates that the main components and quantity are various at different locations of pork belly, while the main components of human skin are similar to those of pig skin. In a further step, the evolution of the heating time-dependent Raman modes of isolated pig skin has been investigated for the mechanism of burnt skin. One can find that the spatial structure and main components of skin have an excellent thermal stability in the temperature range from -120 to 200 ∘C, which is confirmed by the temperature dependent Raman spectra of isolated pig skin, microporous acellular dermal matrix (MADM) as well as their corresponding biochemical reagents (collagen, elastin, triolein, etc.). These results help understand the mechanism of the living skin burnt by fire or hot water, and supplies an alternative technology for surgeons to diagnose the depth of a burn injury in time.
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Affiliation(s)
- Xiaoyi Wang
- Traditional Chinese Medicine (TCM) Orthopedics & Traumatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Fangqi Hua
- Department of Wound Repair, the Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou 324000, China
| | - Xianhai Xie
- Department of the Trauma, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Yungang Wu
- Traditional Chinese Medicine (TCM) Orthopedics & Traumatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Wenxue Sun
- Hemodialysis Room, Department of Nephrology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Zipei Jiang
- Department of Ophthalmology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Jinzhong Zhang
- Department of Wound Repair, the Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou 324000, China
| | - Xu Luo
- National Key Clinical Specialty (Wound Healing), Department of Wounds and Burns, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
- Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- Zhejiang Engineering Research Center for Hospital Emergency and Process Digitization, Wenzhou 325000, Zhejiang, China
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Vardaki MZ, Pavlou E, Simantiris N, Lampri E, Seretis K, Kourkoumelis N. Towards non-invasive monitoring of non-melanoma skin cancer using spatially offset Raman spectroscopy. Analyst 2023; 148:4386-4395. [PMID: 37593769 DOI: 10.1039/d3an00684k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
BCC (basal cell carcinoma) and SCC (squamous cell carcinoma) account for the vast majority of cases of non-melanoma skin cancer (NMSC). The gold standard for the diagnosis remains biopsy, which, however, is an invasive and time-consuming procedure. In this study, we employed spatially offset Raman spectroscopy (SORS), a non-invasive approach, allowing the assessment of deeper skin tissue levels and collection of Raman photons with a bias towards the different layers of epidermis, where the non-melanoma cancers are initially formed and expand. Ex vivo Raman measurements were acquired from 22 skin biopsies using conventional back-scattering and a defocused modality (with and without a spatial offset). The spectral data were assessed against corresponding histopathological data to determine potential prognostic factors for lesion detection. The results revealed a positive correlation of protein and lipid content with the SCC and BCC types, respectively. By further correlating with patient data, multiple factor analysis (MFA) demonstrated a strong clustering of variables based on sex and age in all modalities. Specifically for the defocused modality (zero and 2 mm offset), further clustering occurred based on pathology. This study demonstrates the utility of the SORS technology in NMSC diagnosis prior to histopathological examination on the same tissue.
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Affiliation(s)
- Martha Z Vardaki
- Department of Medical Physics, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens, 11635, Greece
| | - Eleftherios Pavlou
- Department of Medical Physics, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | | | - Evangeli Lampri
- Department of Pathology, Faculty of Medicine, University of Ioannina, 45110 Ioannina, Greece
| | - Konstantinos Seretis
- Department of Plastic Surgery, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Nikolaos Kourkoumelis
- Department of Medical Physics, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
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4
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Baetz N, Labroo P, Ifediba M, Miller D, Stauffer K, Sieverts M, Nicodemus-Johnson J, Chan E, Robinson I, Miess J, Roth S, Irvin J, Laun J, Mundinger G, Granick MS, Milner S, Garrett C, Li WW, Swanson EW, Smith DJ, Sopko NA. Evaluation in a porcine wound model and long-term clinical assessment of an autologous heterogeneous skin construct used to close full-thickness wounds. Tissue Cell 2023; 83:102126. [PMID: 37295271 DOI: 10.1016/j.tice.2023.102126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Acute and chronic wounds involving deeper layers of the skin are often not adequately healed by dressings alone and require therapies such as skin grafting, skin substitutes, or growth factors. Here we report the development of an autologous heterogeneous skin construct (AHSC) that aids wound closure. AHSC is manufactured from a piece of healthy full-thickness skin. The manufacturing process creates multicellular segments, which contain endogenous skin cell populations present within hair follicles. These segments are physically optimized for engraftment within the wound bed. The ability of AHSC to facilitate closure of full thickness wounds of the skin was evaluated in a swine model and clinically in 4 patients with wounds of different etiologies. Transcriptional analysis demonstrated high concordance of gene expression between AHSC and native tissues for extracellular matrix and stem cell gene expression panels. Swine wounds demonstrated complete wound epithelialization and mature stable skin by 4 months, with hair follicle development in AHSC-treated wounds evident by 15 weeks. Biomechanical, histomorphological, and compositional analysis of the resultant swine and human skin wound biopsies demonstrated the presence of epidermal and dermal architecture with follicular and glandular structures that are similar to native skin. These data suggest that treatment with AHSC can facilitate wound closure.
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Affiliation(s)
- Nicholas Baetz
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Pratima Labroo
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Marytheresa Ifediba
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Devin Miller
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Kendall Stauffer
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Michael Sieverts
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | | | - Eric Chan
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Ian Robinson
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - James Miess
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Stephanie Roth
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Jenny Irvin
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Jake Laun
- Department of Plastic Surgery, University of South Florida, Tampa, FL, USA
| | - Gerhard Mundinger
- Department of Surgery, Louisiana State University School of Medicine, New Orleans, LA, USA
| | - Mark S Granick
- Department of Surgery, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Stephen Milner
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Caroline Garrett
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | | | - Edward W Swanson
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - David J Smith
- Department of Plastic Surgery, University of South Florida, Tampa, FL, USA
| | - Nikolai A Sopko
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA.
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5
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Quantitative Assessment of Low-Dose Photodynamic Therapy Effects on Diabetic Wound Healing Using Raman Spectroscopy. Pharmaceutics 2023; 15:pharmaceutics15020595. [PMID: 36839917 PMCID: PMC9966264 DOI: 10.3390/pharmaceutics15020595] [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: 11/27/2022] [Revised: 01/17/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
One of challenges that faces diabetes is the wound healing process. The delayed diabetic wound healing is caused by a complicated molecular mechanism involving numerous physiological variables. Low-dose photodynamic therapy (LDPDT) provides excellent results in rejuvenation and wound healing. In this study, the LDPDT effect on diabetic wounds in mice was studied using two photosensitizers, 5-aminolevulinic acid and methylene blue, and two laser dose expositions of 1 J/cm2 and 4 J/cm2 by Raman spectroscopy (RS). The latter was used as a noninvasive method, providing specific information about tissue state based on the fundamental vibrational modes of its molecular components. RS allows high spatial resolution acquisition of biochemical and structural information through the generation of point spectra or spectral images. An approach to in vivo quantitative assessment of diabetic wound healing state was developed. This approach is based on an application of the principal component analysis combined with the Mahalanobis metrics to skin Raman spectra, in particular, intensities of the amide I and CH2 bands.
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6
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Kreiss L, Ganzleben I, Mühlberg A, Ritter P, Schneidereit D, Becker C, Neurath MF, Friedrich O, Schürmann S, Waldner M. Label-free analysis of inflammatory tissue remodeling in murine lung tissue based on multiphoton microscopy, Raman spectroscopy and machine learning. JOURNAL OF BIOPHOTONICS 2022; 15:e202200073. [PMID: 35611635 DOI: 10.1002/jbio.202200073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
Inflammatory fibrotic tissue remodeling can lead to severe morbidity. Histopathology grading requires extraction of biopsies and elaborate tissue processing. Label-free optical technologies can provide diagnostic readout without preparation and artificial stainings and show potential for in vivo applications. Here, we present an integration of Raman spectroscopy (RS) and multiphoton microscopy for joint investigation of the bio-chemical composition and morphological features related to cellular components and connective tissue. Both modalities show that collagen signatures were significantly increased in a murine fibrosis model. Furthermore, autofluorescence signatures assigned to immune cells show high correlation with disease severity. RS indicates increased levels of elastin and lipids. Further, we investigated the effect of joint data sets on prediction performance in machine learning models. Although binary classification did not benefit from adding more features, multi-class classification was improved by integrated data sets.
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Affiliation(s)
- Lucas Kreiss
- Institute of Medical Biotechnology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
- Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ingo Ganzleben
- Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Ludwig Demling Center for Molecular Imaging, Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Alexander Mühlberg
- Institute of Medical Biotechnology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Paul Ritter
- Institute of Medical Biotechnology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Dominik Schneidereit
- Institute of Medical Biotechnology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Christoph Becker
- Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Ludwig Demling Center for Molecular Imaging, Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Sebastian Schürmann
- Institute of Medical Biotechnology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Maximilian Waldner
- Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Ludwig Demling Center for Molecular Imaging, Department of Medicine 1, University Hospital, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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7
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Nolte O, Geitner R, Volodin IA, Rohland P, Hager MD, Schubert US. State of Charge and State of Health Assessment of Viologens in Aqueous-Organic Redox-Flow Electrolytes Using In Situ IR Spectroscopy and Multivariate Curve Resolution. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200535. [PMID: 35481674 PMCID: PMC9189600 DOI: 10.1002/advs.202200535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Aqueous-organic redox flow batteries (RFBs) have gained considerable interest in recent years, given their potential for an economically viable energy storage at large scale. This, however, strongly depends on both the robustness of the underlying electrolyte chemistry against molecular decomposition reactions as well as the device's operation. With regard to this, the presented study focuses on the use of in situ IR spectroscopy in combination with a multivariate curve resolution approach to gain insight into both the molecular structures of the active materials present within the electrolyte as well as crucial electrolyte state parameters, represented by the electrolyte's state of charge (SOC) and state of health (SOH). To demonstrate the general applicability of the approach, methyl viologen (MV) and bis(3-trimethylammonium)propyl viologen (BTMAPV) are chosen, as viologens are frequently used as negolytes in aqueous-organic RFBs. The study's findings highlight the impact of in situ spectroscopy and spectral deconvolution tools on the precision of the obtainable SOC and SOH values. Furthermore, the study indicates the occurrence of multiple viologen dimers, which possibly influence the electrolyte lifetime and charging characteristics.
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Affiliation(s)
- Oliver Nolte
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaHumboldtstr. 1007743JenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaPhilosophenweg 707743JenaGermany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)Friedrich Schiller University JenaPhilosophenweg 7a07743JenaGermany
| | - Robert Geitner
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaHumboldtstr. 1007743JenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaPhilosophenweg 707743JenaGermany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)Friedrich Schiller University JenaPhilosophenweg 7a07743JenaGermany
- Institute of Chemistry and BioengineeringTechnical University IlmenauWeimarer Str. 3298693IlmenauGermany
| | - Ivan A. Volodin
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaHumboldtstr. 1007743JenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaPhilosophenweg 707743JenaGermany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)Friedrich Schiller University JenaPhilosophenweg 7a07743JenaGermany
| | - Philip Rohland
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaHumboldtstr. 1007743JenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaPhilosophenweg 707743JenaGermany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)Friedrich Schiller University JenaPhilosophenweg 7a07743JenaGermany
| | - Martin D. Hager
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaHumboldtstr. 1007743JenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaPhilosophenweg 707743JenaGermany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)Friedrich Schiller University JenaPhilosophenweg 7a07743JenaGermany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaHumboldtstr. 1007743JenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaPhilosophenweg 707743JenaGermany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)Friedrich Schiller University JenaPhilosophenweg 7a07743JenaGermany
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Dose-Response Relationship and Threshold Drug Dosage Identification for a Novel Hybrid Mechanical-Thrombolytic System with an Ultra-Low Dose Patch. Cell Mol Bioeng 2021; 14:627-637. [PMID: 34900015 DOI: 10.1007/s12195-021-00683-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 05/31/2021] [Indexed: 10/21/2022] Open
Abstract
Introduction Ischemic stroke treatment has advanced in the last two decades and intravenous thrombolysis is now considered the standard of care for selected patients. Recanalization can also be achieved by mechanical endovascular treatment for patients with large vessel occlusions. Complicating treatment-related symptomatic intracerebral hemorrhage and prolonged needle-to-recanalization times have been identified as major determinants of poor three-month functional outcomes. A hybrid mechanical-thrombolytic system with a patch imbued with an ultra-low dose of thrombolytic agents loaded onto a stent-retriever has been developed. Methods In this study, the in situ dose-response relationship of the thrombolytic patch imbued with up to 1000 IU of urokinase plasminogen activator (uPA) was quantified using Raman spectroscopy. Results Thrombi of up to 400 μm thickness dissolved within 15 min when patches imbued with < 1% of the conventional thrombolysis therapy dosage were applied. The results demonstrated that low-dose thrombolytic patches can dissolve normal clots compressed in the blood vessel in a short time. 500 IU is the threshold uPA dosage in the thrombolytic patch that most effectively dissolves the clots. Conclusion This study suggests that a novel endovascular stent-retriever loaded with an ultra-low drug dose fibrinolytic patch may be a suitable treatment for patients who are ineligible for conventional thrombolytic therapy.
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9
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Seeger M, Dehner C, Jüstel D, Ntziachristos V. Label-free concurrent 5-modal microscopy (Co5M) resolves unknown spatio-temporal processes in wound healing. Commun Biol 2021; 4:1040. [PMID: 34489513 PMCID: PMC8421396 DOI: 10.1038/s42003-021-02573-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 08/18/2021] [Indexed: 02/07/2023] Open
Abstract
The non-invasive investigation of multiple biological processes remains a methodological challenge as it requires capturing different contrast mechanisms, usually not available with any single modality. Intravital microscopy has played a key role in dynamically studying biological morphology and function, but it is generally limited to resolving a small number of contrasts, typically generated by the use of transgenic labels, disturbing the biological system. We introduce concurrent 5-modal microscopy (Co5M), illustrating a new concept for label-free in vivo observations by simultaneously capturing optoacoustic, two-photon excitation fluorescence, second and third harmonic generation, and brightfield contrast. We apply Co5M to non-invasively visualize multiple wound healing biomarkers and quantitatively monitor a number of processes and features, including longitudinal changes in wound shape, microvascular and collagen density, vessel size and fractality, and the plasticity of sebaceous glands. Analysis of these parameters offers unique insights into the interplay of wound closure, vasodilation, angiogenesis, skin contracture, and epithelial reformation in space and time, inaccessible by other methods. Co5M challenges the conventional concept of biological observation by yielding multiple simultaneous parameters of pathophysiological processes in a label-free mode.
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Affiliation(s)
- Markus Seeger
- Chair of Biological Imaging, Central Institute for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - Christoph Dehner
- Chair of Biological Imaging, Central Institute for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - Dominik Jüstel
- Chair of Biological Imaging, Central Institute for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Vasilis Ntziachristos
- Chair of Biological Imaging, Central Institute for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich, Germany.
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany.
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10
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Aguilar-Toalá JE, Hall FG, Urbizo-Reyes UC, Garcia HS, Vallejo-Cordoba B, González-Córdova AF, Hernández-Mendoza A, Liceaga AM. In Silico Prediction and In Vitro Assessment of Multifunctional Properties of Postbiotics Obtained From Two Probiotic Bacteria. Probiotics Antimicrob Proteins 2021; 12:608-622. [PMID: 31280464 DOI: 10.1007/s12602-019-09568-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this study, a global metabolite profile using Raman spectroscopy analysis was obtained in order to predict, by an in silico prediction of activity spectra for substance approach, the bioactivities of the intracellular content (IC) and cell wall (CW) fractions obtained from Lactobacillus casei CRL 431 and Bacillus coagulans GBI-30 strains. Additionally, multifunctional in vitro bioactivity of IC and CW fractions was also assessed. The metabolite profile revealed a variety of compounds (fatty acids, amino acids, coenzyme, protein, amino sugars), with significant probable activities (Pa > 0.7) as immune-stimulant, anti-inflammatory, neuroprotective, antiproliferative, immunomodulator, and antineoplastic, among others. Moreover, in vitro assays exhibited that both IC and CW fractions presented angiotensin-converting enzyme-inhibitory (> 90%), chelating (> 79%), and antioxidant (ca. 22-57 cellular antioxidant activity units) activities. Our findings based on in silico and in vitro analyses suggest that L. casei CRL 431 and B. coagulans GBI-30 strains appear to be promising sources of postbiotics and may impart health benefits by their multifunctional properties.
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Affiliation(s)
- J E Aguilar-Toalá
- Laboratorio de Química y Biotecnología de Productos Lácteos, Centro de Investigación en Alimentación y Desarrollo A.C. (CIAD), Carretera a La Victoria km. 0.6, 83304, Hermosillo, Sonora, Mexico.,Department of Food Science, Purdue University, 745 Agriculture Mall Dr, West Lafayette, IN, 47907, USA
| | - F G Hall
- Department of Food Science, Purdue University, 745 Agriculture Mall Dr, West Lafayette, IN, 47907, USA
| | - U C Urbizo-Reyes
- Department of Food Science, Purdue University, 745 Agriculture Mall Dr, West Lafayette, IN, 47907, USA
| | - H S Garcia
- UNIDA Tecnológico Nacional de México, Instituto Tecnológico de Veracruz, M.A. de Quevedo 2279, Col. Formando Hogar, 91897, Veracruz, Veracruz, Mexico
| | - B Vallejo-Cordoba
- Laboratorio de Química y Biotecnología de Productos Lácteos, Centro de Investigación en Alimentación y Desarrollo A.C. (CIAD), Carretera a La Victoria km. 0.6, 83304, Hermosillo, Sonora, Mexico
| | - A F González-Córdova
- Laboratorio de Química y Biotecnología de Productos Lácteos, Centro de Investigación en Alimentación y Desarrollo A.C. (CIAD), Carretera a La Victoria km. 0.6, 83304, Hermosillo, Sonora, Mexico
| | - A Hernández-Mendoza
- Laboratorio de Química y Biotecnología de Productos Lácteos, Centro de Investigación en Alimentación y Desarrollo A.C. (CIAD), Carretera a La Victoria km. 0.6, 83304, Hermosillo, Sonora, Mexico.
| | - A M Liceaga
- Department of Food Science, Purdue University, 745 Agriculture Mall Dr, West Lafayette, IN, 47907, USA.
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11
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Raghunathan V, Park SA, Shah NM, Reilly CM, Teixeira L, Dubielzig R, Chang YR, Motta MJ, Schurr MJ, McAnulty JF, Isseroff RR, Abbott NL, Murphy CJ. Changing the Wound: Covalent Immobilization of the Epidermal Growth Factor. ACS Biomater Sci Eng 2021; 7:2649-2660. [PMID: 34018720 DOI: 10.1021/acsbiomaterials.1c00192] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Re-epithelialization of wounds is a critical element of wound closure. Growth factors have been used in combination with conventional wound management to promote closure, but the method of delivery has been limited to the topical application of ointment formulations. Cytoactive factors delivered in this way have short resident times in wounds and have met with limited success. Here, we demonstrate that methods used to covalently immobilize proteins on synthetic materials can be extended to immobilize cytoactive factors such as the epidermal growth factor (EGF) onto the wound beds of genetically diabetic mice that exhibit impaired healing. Full-thickness splinted excisional wounds were created in diabetic (db/db) mice with a well-defined silicone splint to limit wound contracture. Wound surfaces were treated with a reducing agent to expose sulfhydryl groups and subsequently treated with EGF modified with a heterobifunctional crosslinker. This allowed for the covalent immobilization of the EGF to the wound surface. The conjugation chemistry was validated in vitro and in vivo. In a separate group of mice, wounds were topically treated twice daily with soluble EGF. The mice were evaluated over 11 days for wound closure. This covalent immobilization strategy resulted in EGF being retained on the wound surface for 2 days and significantly increased epithelial wound closure by 20% compared to wounds treated with topical EGF or topical vehicle. Covalent immobilization was not only therapeutically effective but also delivered a markedly reduced load of growth factor to the wound surface compared to topical application (when only 180 ng of EGF was immobilized onto the wound surface in comparison with 7200 ng of topically applied EGF over a period of 11 days). No adverse effects were observed in treated wounds. Results obtained provide proof of concept for the effectiveness of covalent immobilization in the treatment of dysregulated wounds. The covalent immobilization of cytoactive factors represents a potentially transformative approach to the management of difficult chronic wounds.
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Affiliation(s)
- VijayKrishna Raghunathan
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, One Shields Avenue, Davis, California 95616, United States.,Department of Basic Sciences, College of Optometry, University of Houston, 4901 Calhoun Rd, Houston, Texas 77204, United States.,Biomedical Engineering, Cullen College of Engineering, University of Houston, Houston, Texas 77204, United States
| | - Shin Ae Park
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, One Shields Avenue, Davis, California 95616, United States.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, 625 Harrison Street, West Lafayette, Indiana 47907, United States
| | - Nihar M Shah
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, One Shields Avenue, Davis, California 95616, United States.,Medtronic Diabetes, 18000 Devonshire Street, Northridge, California 91325-1219, United States
| | - Christopher M Reilly
- Department of Pathology, Microbiology & Immunology, School of Veterinary Medicine, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| | - Leandro Teixeira
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Richard Dubielzig
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Yow-Ren Chang
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| | - Monica J Motta
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| | - Michael J Schurr
- Divison of General Surgery, Mountain Area Health Education Center, 509 Biltmore Avenue, Asheville, North Carolina 28803, United States
| | - Jonathan F McAnulty
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Drive, Madison, Wisconsin 53706, United States
| | - R Rivkah Isseroff
- Department of Dermatology, UC Davis School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Nicholas L Abbott
- Smith School of Chemical and Biomolecular Engineering, Cornell University, 1 Hoy Plaza, Ithaca, New York 14853 United States
| | - Christopher J Murphy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, One Shields Avenue, Davis, California 95616, United States.,Department of Ophthalmology & Vision Science, School of Medicine, University of California Davis, One Shields Avenue, Davis, California 95817, United States
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12
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Therapy of infected wounds: overcoming clinical challenges by advanced drug delivery systems. Drug Deliv Transl Res 2021; 11:1545-1567. [PMID: 33611768 PMCID: PMC8236057 DOI: 10.1007/s13346-021-00932-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2021] [Indexed: 12/12/2022]
Abstract
In recent years, the incidence of infected wounds is steadily increasing, and so is the clinical as well as economic interest in effective therapies. These combine reduction of pathogen load in the wound with general wound management to facilitate the healing process. The success of current therapies is challenged by harsh conditions in the wound microenvironment, chronicity, and biofilm formation, thus impeding adequate concentrations of active antimicrobials at the site of infection. Inadequate dosing accuracy of systemically and topically applied antibiotics is prone to promote development of antibiotic resistance, while in the case of antiseptics, cytotoxicity is a major problem. Advanced drug delivery systems have the potential to enable the tailor-made application of antimicrobials to the side of action, resulting in an effective treatment with negligible side effects. This review provides a comprehensive overview of the current state of treatment options for the therapy of infected wounds. In this context, a special focus is set on delivery systems for antimicrobials ranging from semi-solid and liquid formulations over wound dressings to more advanced carriers such as nano-sized particulate systems, vesicular systems, electrospun fibers, and microneedles, which are discussed regarding their potential for effective therapy of wound infections. Further, established and novel models and analytical techniques for preclinical testing are introduced and a future perspective is provided. ![]()
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13
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Shaik TA, Lagarto JL, Baria E, Goktas M, Onoja PI, Blank KG, Pavone FS, Popp J, Krafft C, Cicchi R. Monitoring Changes in Biochemical and Biomechanical Properties of Collagenous Tissues Using Label-Free and Nondestructive Optical Imaging Techniques. Anal Chem 2021; 93:3813-3821. [PMID: 33596051 DOI: 10.1021/acs.analchem.0c04306] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We demonstrate the ability of nondestructive optical imaging techniques such as second-harmonic generation (SHG), two-photon fluorescence (TPF), fluorescence lifetime imaging (FLIM), and Raman spectroscopy (RS) to monitor biochemical and mechanical alterations in tissues upon collagen degradation. Decellularized equine pericardium (EP) was treated with 50 μg/mL bacterial collagenase at 37 °C for 8, 16, 24, and 32 h. The SHG ratio (defined as the normalized ratio between SHG and TPF signals) remained unchanged for untreated EP (stored in phosphate-buffered solution (PBS)), whereas treated EP showed a trend of a decreasing SHG ratio with increasing collagen degradation. In the fluorescence domain, treated EP experienced a red-shifted emission and the fluorescence lifetime had a trend of decreasing lifetime with increasing collagen digestion. RS monitors collagen degradation, the spectra had less intense Raman bands at 814, 852, 938, 1242, and 1270 cm-1. Non-negative least-squares (NNLS) modeling quantifies collagen loss and relative increase of elastin. The Young's modulus, derived from atomic force microscope-based nanoindentation experiments, showed a rapid decrease within the first 8 h of collagen degradation, whereas more gradual changes were observed for optical modalities. We conclude that optical imaging techniques like SHG, RS, and FLIM can monitor collagen degradation in a label-free manner and coarsely access mechanical properties in a nondestructive manner.
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Affiliation(s)
- Tanveer Ahmed Shaik
- Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - João L Lagarto
- National Institute of Optics (INO), National Research Council (CNR), Largo E. Fermi 6, 50125 Florence, Italy.,European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
| | - Enrico Baria
- National Institute of Optics (INO), National Research Council (CNR), Largo E. Fermi 6, 50125 Florence, Italy.,European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
| | - Melis Goktas
- Mechano(bio)chemistry, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Patrick Igoche Onoja
- Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - Kerstin G Blank
- Mechano(bio)chemistry, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Francesco S Pavone
- National Institute of Optics (INO), National Research Council (CNR), Largo E. Fermi 6, 50125 Florence, Italy.,European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07745 Jena, Germany.,Institute of Physical Chemistry, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany.,Abbe Center of Photonics, Friedrich Schiller University, Albert-Einstein-Strasse 6, 07745 Jena, Germany
| | - Christoph Krafft
- Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - Riccardo Cicchi
- National Institute of Optics (INO), National Research Council (CNR), Largo E. Fermi 6, 50125 Florence, Italy.,European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
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14
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Labroo P, Irvin J, Johnson J, Sieverts M, Miess J, Robinson I, Baetz N, Garrett C, Sopko N. Physical characterization of swine and human skin: Correlations between Raman spectroscopy, Tensile testing, Atomic force microscopy (AFM), Scanning electron microscopy (SEM), and Multiphoton microscopy (MPM). Skin Res Technol 2020; 27:501-510. [PMID: 33216396 DOI: 10.1111/srt.12976] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/28/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Swine dorsum is commonly utilized as a model for studying skin wounds and assessment of dermatological and cosmetic medicaments. The human abdomen is a common location for dermatological intervention. OBJECTIVE This study provides a correlation between spectral, mechanical, and structural characterization techniques, utilized for evaluating human abdominal skin and swine dorsum. METHODS Raman spectroscopy (RS), tensile testing, ballistometry, AFM, SEM, and MPM were utilized to characterize and compare full-thickness skin properties in swine and human model. RESULTS RS of both species' skin types revealed a similar assignment of vibrations in the fingerprint and the high wavenumber spectral regions. Structural imaging and mechanical characterization using ballistometry and tensile testing displayed differences in the inherent functional properties of human and swine skin. These differences correlated with variations in the Raman peak ratios, collagen intensity measured using SEM and MPM and collagen density measured using AFM. CONCLUSION A comprehensive evaluation of swine skin as a suitable substitute for human skin for mechanical and structural comparisons was performed. This data should be considered for better understanding the swine skin model for cutaneous drug delivery and wound applications. Additionally, correlation between RS, tensile testing, AFM, SEM, and MPM was performed as skin characterization tools.
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Affiliation(s)
- Pratima Labroo
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Jennifer Irvin
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Joshua Johnson
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Michael Sieverts
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - James Miess
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Ian Robinson
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Nicholas Baetz
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Caroline Garrett
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
| | - Nikolai Sopko
- Department of Research and Development, PolarityTE MD, Inc., Salt Lake City, UT, USA
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15
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Castro PAA, Lima CA, Morais MRPT, Zorn TMT, Zezell DM. Monitoring the Progress and Healing Status of Burn Wounds Using Infrared Spectroscopy. APPLIED SPECTROSCOPY 2020; 74:758-766. [PMID: 32419472 DOI: 10.1177/0003702820919446] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Burns are one of the leading causes of morbidity worldwide and the most costly traumatic injuries. A better understanding of the molecular mechanisms in wound healing is required to accelerate tissue recovery and reduce the health economic impact. However, the standard techniques used to evaluate the biological events associated to wound repair are laborious, time-consuming, and/or require multiple assays/staining. Therefore, this study aims to evaluate the feasibility of Fourier transform infrared (FT-IR) spectroscopy to monitor the progress and healing status of burn wounds. Burn injuries were induced on Wistar rats by water vapor exposure and biopsied for further histopathological and spectroscopic evaluation at four time-points (3, 7, 14, and 21 days). Spectral data were preprocessed and compared by principal component analysis. Pairwise comparison of post-burn groups to each other revealed that metabolic activity induced by thermal injury decreases as the healing progresses. Higher amounts of carbohydrates, proteins, lipids, and nucleic acids were evidenced on days 3 and 7 compared to healthy skin and reduced amounts of these molecular structural units on days 14 and 21 post-burn. FT-IR spectroscopy was used to determine the healing status of a wound based on the biochemical information retained by spectral signatures in each phase of healing. Our findings demonstrate that FT-IR spectroscopy can monitor the biological events triggered by burn trauma as well as to detect the wound status including full recovery based on the spectral changes associated to the biochemical events in each phase.
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Affiliation(s)
- Pedro A A Castro
- Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP), University of Sao Paulo (USP), Sao Paulo, Brazil
| | - Cassio A Lima
- Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP), University of Sao Paulo (USP), Sao Paulo, Brazil
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Mychel R P T Morais
- Instituto de Ciencias Biomedicas (ICB), University of Sao Paulo (USP), Sao Paulo, Brazil
| | - Telma M T Zorn
- Instituto de Ciencias Biomedicas (ICB), University of Sao Paulo (USP), Sao Paulo, Brazil
| | - Denise M Zezell
- Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP), University of Sao Paulo (USP), Sao Paulo, Brazil
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16
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Castellanos A, Hernandez MG, Tomic-Canic M, Jozic I, Fernandez-Lima F. Multimodal, in Situ Imaging of Ex Vivo Human Skin Reveals Decrease of Cholesterol Sulfate in the Neoepithelium during Acute Wound Healing. Anal Chem 2019; 92:1386-1394. [PMID: 31789498 DOI: 10.1021/acs.analchem.9b04542] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Skin repair is a significant aspect of human health. While the makeup of healthy stratum corneum and epidermis is generally understood, the mobilization of molecular components during skin repair remains largely unknown. In the present work, we utilize multimodal, in situ, mass spectrometry, and immunofluorescence imaging for the characterization of newly formed epidermis, following an initial acute wound for the first 96 h of epithelization. In particular, TOF-SIMS and confirmatory MALDI FT-ICR MS (/MS) analysis permitted the mapping of several lipid classes, including phospholipids, neutral lipids, cholesterol, ceramides, and free fatty acids. Endogenous lipid species were localized in discrete epidermal skin layers, including the stratum corneum (SC), stratum granulosum (SG), stratum basale (SB), and dermis. Experiments revealed that healthy re-epithelializing skin is characterized by diminished cholesterol sulfate signal along the stratum corneum toward the migrating epithelial tongue. The spatial distribution and relative abundances of cholesterol sulfate are reported and correlated with the healing time. The multimodal imaging approach enabled in situ high-confidence chemical mapping based on accurate mass and fragmentation pattern of molecular components. The use of postanalysis immunofluorescence imaging from the same tissue confirmed the localization of endogenous lipid species and Filaggrin and Cav-1 proteins at high spatial resolution (approximately a few microns).
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Affiliation(s)
- Anthony Castellanos
- Department of Chemistry and Biochemistry , Florida International University , 11200 SW Eighth Street, AHC4-233 , Miami , Florida 33199 , United States
| | - Mario Gomez Hernandez
- Department of Chemistry and Biochemistry , Florida International University , 11200 SW Eighth Street, AHC4-233 , Miami , Florida 33199 , United States
| | - Marjana Tomic-Canic
- Wound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery , University of Miami Miller School of Medicine , 1600 NW 10th Avenue, RMSB 6056 , Miami , Florida 33136 , United States
| | - Ivan Jozic
- Wound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery , University of Miami Miller School of Medicine , 1600 NW 10th Avenue, RMSB 6056 , Miami , Florida 33136 , United States
| | - Francisco Fernandez-Lima
- Department of Chemistry and Biochemistry , Florida International University , 11200 SW Eighth Street, AHC4-233 , Miami , Florida 33199 , United States.,Biomolecular Sciences Institute , Florida International University , Miami , Florida 33199 , United States
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17
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Su JW, Wang Q, Tian Y, Madden L, Ling Teo EM, Becker DL, Liu Q. Depth-sensitive Raman spectroscopy for skin wound evaluation in rodents. BIOMEDICAL OPTICS EXPRESS 2019; 10:6114-6128. [PMID: 31853389 PMCID: PMC6913421 DOI: 10.1364/boe.10.006114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 05/22/2023]
Abstract
Raman spectroscopy has demonstrated great potential for skin wound assessment. Given that biochemical changes in wound healing is depth dependent as the skin is a layered structure, depth sensitive Raman spectroscopy could enhance the power of Raman spectroscopy in this application. Considering the critical importance of rodent studies in the field of skin wound assessment, it is necessary to develop and validate a system that can perform depth sensitive measurements in rat skin with a proper target depth range. In this manuscript, we report the design, optimization and evaluation of a new snapshot depth-sensitive Raman instrument for rat skin measurements. The optical design and optimization process are presented first. The depth sensitive measurement performance is characterized on both ex vivo porcine skin with a gradient of layer thickness and ex vivo rat skin samples with wounds. The statistical analysis of the measured Raman spectra demonstrates the feasibility of differentiation between the wound edge and healthy skin. Moreover, the accuracy of classification improves monotonically as more data from new depths are used, which implies that each depth offers additional information useful for classification. This instrument demonstrates the ability to perform snapshot depth sensitive Raman measurements from rat skin, which paves the way towards in vivo preclinical studies of rat skin wounds.
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Affiliation(s)
- Joshua Weiming Su
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- NTU Institute for Health Technologies, Interdisciplinary Graduate School, Nanyang Technological University, Singapore
- Skin Research Institute Singapore, 11 Mandalay Road, 308232, Singapore
| | - Qiang Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
- Currently with the Centre for Nanoscale Biophotonics, Macquarie University, Sydney, NSW 2109, Australia
| | - Yao Tian
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
| | - Leigh Madden
- Skin Research Institute Singapore, 11 Mandalay Road, 308232, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, 308232, Singapore
| | - Erica Mei Ling Teo
- NTU Institute for Health Technologies, Interdisciplinary Graduate School, Nanyang Technological University, Singapore
- Skin Research Institute Singapore, 11 Mandalay Road, 308232, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, 308232, Singapore
| | - David Laurence Becker
- Skin Research Institute Singapore, 11 Mandalay Road, 308232, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, 308232, Singapore
| | - Quan Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
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18
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Blat A, Dybas J, Chrabaszcz K, Bulat K, Jasztal A, Kaczmarska M, Pulyk R, Popiela T, Slowik A, Malek K, Adamski MG, Marzec KM. FTIR, Raman and AFM characterization of the clinically valid biochemical parameters of the thrombi in acute ischemic stroke. Sci Rep 2019; 9:15475. [PMID: 31664105 PMCID: PMC6820737 DOI: 10.1038/s41598-019-51932-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 09/25/2019] [Indexed: 12/22/2022] Open
Abstract
The significance and utility of innovative imaging techniques in arterial clot analysis, which enable far more detailed and automated analysis compared to standard methods, are presented. The examination of two types of human thrombi is shown, representing the main ischemic stroke etiologies: fibrin–predominant clot of large vessel origin and red blood cells–rich clot of cardioembolic origin. The synergy effect of Fourier–transform infrared spectroscopy (FTIR), Raman spectroscopy (RS) and atomic force microscopy (AFM) techniques supported by chemometrics in comparison with reference histological staining was presented. The main advantage of such approach refers to free–label and non–destructive quantitative imaging of clinically valid, biochemical parameters in whole sample (FTIR–low resolution) and selected regions (RS–ultra–high resolution). We may include here analysis of lipid content, its distribution and total degree of unsaturation as well as analysis of protein content (mainly fibrin and hemoproteins). The AFM studies enhanced the vibrational data, showed clearly shape and thickness of clot features as well as visualized the fibrin framework. The extraordinary sensitivity of FTIR and RS imaging toward detection and discrimination of clinically valid parameters in clot confirms its applicability in assessment of thrombi origin.
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Affiliation(s)
- Aneta Blat
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland.,Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., Krakow, Poland
| | - Jakub Dybas
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland
| | - Karolina Chrabaszcz
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland.,Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., Krakow, Poland.,Center for Medical Genomics (OMICRON), Jagiellonian University Medical College, 7c Kopernika Str., 31-034, Krakow, Poland
| | - Katarzyna Bulat
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland
| | - Agnieszka Jasztal
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland
| | - Magdalena Kaczmarska
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland
| | - Roman Pulyk
- Department of Neurology, Jagiellonian University Medical College, 3 Botaniczna Str., 31-503, Krakow, Poland
| | - Tadeusz Popiela
- Department of Neuroradiology, Jagiellonian University Medical College, 3 Botaniczna Str., 31-503, Krakow, Poland
| | - Agnieszka Slowik
- Department of Neurology, Jagiellonian University Medical College, 3 Botaniczna Str., 31-503, Krakow, Poland
| | - Kamilla Malek
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., Krakow, Poland
| | - Mateusz G Adamski
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland
| | - Katarzyna M Marzec
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348, Krakow, Poland. .,Center for Medical Genomics (OMICRON), Jagiellonian University Medical College, 7c Kopernika Str., 31-034, Krakow, Poland.
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19
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O’Brien CM, Cochran KJ, Masson LE, Goldberg M, Marple E, Bennett KA, Reese J, Slaughter JC, Newton JM, Mahadevan-Jansen A. Development of a visually guided Raman spectroscopy probe for cervical assessment during pregnancy. JOURNAL OF BIOPHOTONICS 2019; 12:e201800138. [PMID: 30259692 PMCID: PMC6578580 DOI: 10.1002/jbio.201800138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 09/24/2018] [Indexed: 05/22/2023]
Abstract
Preterm birth (PTB) is the leading cause of neonatal death, however, accurate prediction methods do not exist. Detection of early changes in the cervix, an organ that biochemically remodels to deliver the fetus, has potential to predict PTB risk. Researchers have employed light-based methods to monitor biochemical changes in the cervix during pregnancy, however, these approaches required patients to undergo a speculum examination which many patients find uncomfortable and is not standard practice during prenatal care. Herein, a visually guided optical probe is presented that measures the cervix via introduction by bimanual examination, a procedure that is commonly performed during prenatal visits and labor for tactile monitoring of the cervix. The device incorporates a Raman spectroscopy probe for biochemical monitoring and a camera for visualizing measurement location to ensure it is void of cervical mucus and blood. This probe was tested in 15 patients receiving obstetric and gynecological care, and results acquired with and without a speculum revealed similar spectra, demonstrating that the visually guided probe conserved data quality. Additionally, the majority of patients reported reduced discomfort from the device. In summary, the visual guidance probe successfully measured the cervix while integrating with standard prenatal care, reducing a barrier in clinical translation.
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Affiliation(s)
- Christine M. O’Brien
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Biophotonics Center, Vanderbilt University, Nashville, Tennessee
| | - Katherine J. Cochran
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Biophotonics Center, Vanderbilt University, Nashville, Tennessee
| | - Laura E. Masson
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Biophotonics Center, Vanderbilt University, Nashville, Tennessee
| | - Mack Goldberg
- Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, Tennessee
| | | | - Kelly A. Bennett
- Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jeff Reese
- Biophotonics Center, Vanderbilt University, Nashville, Tennessee
- Division of Neonatology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - James C. Slaughter
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - J M. Newton
- Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Anita Mahadevan-Jansen
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Biophotonics Center, Vanderbilt University, Nashville, Tennessee
- Correspondence Anita Mahadevan-Jansen, Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232.,
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Laser-induced autofluorescence-based objective evaluation of burn tissue repair in mice. Lasers Med Sci 2017; 33:699-707. [DOI: 10.1007/s10103-017-2371-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 10/22/2017] [Indexed: 11/26/2022]
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21
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O'Brien CM, Herington JL, Brown N, Pence IJ, Paria BC, Slaughter JC, Reese J, Mahadevan-Jansen A. In vivo Raman spectral analysis of impaired cervical remodeling in a mouse model of delayed parturition. Sci Rep 2017; 7:6835. [PMID: 28754971 PMCID: PMC5533720 DOI: 10.1038/s41598-017-07047-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 06/21/2017] [Indexed: 12/01/2022] Open
Abstract
Monitoring cervical structure and composition during pregnancy has high potential for prediction of preterm birth (PTB), a problem affecting 15 million newborns annually. We use in vivo Raman spectroscopy, a label-free, light-based method that provides a molecular fingerprint to non-invasively investigate normal and impaired cervical remodeling. Prostaglandins stimulate uterine contractions and are clinically used for cervical ripening during pregnancy. Deletion of cyclooxygenase-1 (Cox-1), an enzyme involved in production of these prostaglandins, results in delayed parturition in mice. Contrary to expectation, Cox-1 null mice displayed normal uterine contractility; therefore, this study sought to determine whether cervical changes could explain the parturition differences in Cox-1 null mice and gestation-matched wild type (WT) controls. Raman spectral changes related to extracellular matrix proteins, lipids, and nucleic acids were tracked over pregnancy and found to be significantly delayed in Cox-1 null mice at term. A cervical basis for the parturition delay was confirmed by other ex vivo tests including decreased tissue distensibility, hydration, and elevated progesterone levels in the Cox-1 null mice at term. In conclusion, in vivo Raman spectroscopy non-invasively detected abnormal remodeling in the Cox-1 null mouse, and clearly demonstrated that the cervix plays a key role in their delayed parturition.
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Affiliation(s)
- Christine M O'Brien
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37232, USA.,Biophotonics Center, Vanderbilt University, Nashville, TN, 37232, USA
| | - Jennifer L Herington
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Naoko Brown
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Isaac J Pence
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37232, USA.,Biophotonics Center, Vanderbilt University, Nashville, TN, 37232, USA
| | - Bibhash C Paria
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - James C Slaughter
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Jeff Reese
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37232, USA.,Biophotonics Center, Vanderbilt University, Nashville, TN, 37232, USA.,Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.,Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Anita Mahadevan-Jansen
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37232, USA. .,Biophotonics Center, Vanderbilt University, Nashville, TN, 37232, USA.
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22
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Brauchle E, Bauer H, Fernes P, Zuk A, Schenke-Layland K, Sengle G. Raman microspectroscopy as a diagnostic tool for the non-invasive analysis of fibrillin-1 deficiency in the skin and in the in vitro skin models. Acta Biomater 2017; 52:41-48. [PMID: 27956365 DOI: 10.1016/j.actbio.2016.12.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 12/06/2016] [Accepted: 12/07/2016] [Indexed: 10/20/2022]
Abstract
Fibrillin microfibrils and elastic fibers are critical determinants of elastic tissues where they define as tissue-specific architectures vital mechanical properties such as pliability and elastic recoil. Fibrillin microfibrils also facilitate elastic fiber formation and support the association of epithelial cells with the interstitial matrix. Mutations in fibrillin-1 (FBN1) are causative for the Marfan syndrome, a congenital multisystem disorder characterized by progressive deterioration of the fibrillin microfibril/ elastic fiber architecture in the cardiovascular, musculoskeletal, ocular, and dermal system. In this study, we utilized Raman microspectroscopy in combination with principal component analysis (PCA) to analyze the molecular consequences of fibrillin-1 deficiency in skin of a mouse model (GT8) of Marfan syndrome. In addition, full-thickness skin models incorporating murine wild-type and Fbn1GT8/GT8 fibroblasts as well as human HaCaT keratinocytes were generated and analyzed. Skin models containing GT8 fibroblasts showed an altered epidermal morphology when compared to wild-type models indicating a new role for fibrillin-1 in dermal-epidermal crosstalk. Obtained Raman spectra together with PCA allowed to discriminate between healthy and deficient microfibrillar networks in murine dermis and skin models. Interestingly, results obtained from GT8 dermis and skin models showed similar alterations in molecular signatures triggered by fibrillin-1 deficiency such as amide III vibrations and decreased levels of glycan vibrations. Overall, this study indicates that Raman microspectroscopy has the potential to analyze subtle changes in fibrillin-1 microfibrils and elastic fiber networks. Therefore Raman microspectroscopy may be utilized as a non-invasive and sensitive diagnostic tool to identify connective tissue disorders and monitor their disease progression. STATEMENT OF SIGNIFICANCE Mutations in building blocks of the fibrillin microfibril/ elastic fiber network manifest in disease conditions such as aneurysms, emphysema or lax skin. Understanding how structural changes induced by fibrillin-1 mutation impact the architecture of fibrillin microfibrils, which then translates into an altered activation state of targeted growth factors, represents a huge challenge in elucidating the genotype-phenotype correlations in connective tissue disorders such as Marfan syndrome. This study shows that Raman microspectroscopy is able to reveal structural changes in fibrillin-1 microfibrils and elastic fiber networks and to discriminate between normal and diseased networks in vivo and in vitro. Therefore Raman microspectroscopy may be utilized as a non-invasive and sensitive diagnostic tool to identify connective tissue disorders and monitor their disease progression.
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Effect of Cigarette Smoke on Wound Healing of the Septal Mucosa of the Rat. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6958597. [PMID: 27042668 PMCID: PMC4793103 DOI: 10.1155/2016/6958597] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/25/2015] [Accepted: 01/12/2016] [Indexed: 01/05/2023]
Abstract
Objectives/Hypothesis. Proper wound healing following endoscopic sinus surgery (ESS) is influenced by several factors, like cigarette smoke (CS) exposure. This study aims to assess the influence of cigarette smoke on the healing of induced septal mucosal lesion in rats. Methods. Unilateral nasal wounds were created by means of the interdental brush in seventy-four-week-old male rats. Animals were randomly divided into two groups: control group and CS exposure group, each comprising 35 animals, divided into five groups (n = 7). Animals were sacrificed in groups of seven on day 2 and then on days 5, 14, and 28 and finally on day 42 following wound induction. Results. Histological analysis of mucosal specimens shows important changes at the CS exposure group. Starting with the infiltrates of neutrophils, eosinophils, macrophages, and lymphocytes, the histological changes were continued with the Goblet cell proliferation, ciliated cells loss, fibrosis, and epithelial and subepithelial hypertrophy. Conclusion. In this experimental model of nasal wound healing we demonstrated the deleterious effects of chronic CS exposure. The adverse effects of CS exposure are firstly a postponement of the healing process and secondly the persistence of inflammation which becomes chronic.
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Sivashanmugan K, Liao JD, Shao PL, Liu BH, Tseng TY, Chang CY. Intense Raman scattering on hybrid Au/Ag nanoplatforms for the distinction of MMP-9-digested collagen type-I fiber detection. Biosens Bioelectron 2015; 72:61-70. [PMID: 25957832 DOI: 10.1016/j.bios.2015.04.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/28/2015] [Accepted: 04/27/2015] [Indexed: 11/19/2022]
Abstract
Well-ordered Au-nanorod arrays were fabricated using the focused ion beam method (denoted as fibAu_NR). Au or Ag nanoclusters (NCs) of various sizes and dimensions were then deposited on the fibAu_NR arrays using electron beam deposition to improve the surface-enhanced Raman scattering (SERS) effect, which was verified using a low concentration of crystal violet (10(-)(5)M) as the probe molecule. An enhancement factor of 6.92 × 10(8) was obtained for NCsfibAu_NR, which is attributed to the combination of intra-NC and NR localized surface plasmon resonance. When 4-aminobenzenethiol (4-ABT)-coated Au or Ag nanoparticles (NPs) were attached to NCsfibAu_NR, the small gaps between 4-ABT-coated NPs and intra-NCs allowed detection at the single-molecule level. Hotspots formed at the interfaces of NCs/NRs and NPs/NCs at a high density, producing a strong local electromagnetic effect. Raman spectra from as-prepared type I collagen (Col-I) and Ag-NP-coated Col-I fibers on NCsfibAu_NR were compared to determine the quantity of amino acids in their triple helix structure. Various concentrations of matrix-metalloproteinase-9-digested Col-I fibers on NCsfibAu_NR were qualitatively examined at a Raman laser wavelength of 785nm to determine the changes of amino acids in the Col-I fiber structure. The results can be used to monitor the growth of healing Col-I fibers in a micro-environment.
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Affiliation(s)
- Kundan Sivashanmugan
- Department of Materials Science and Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan
| | - Jiunn-Der Liao
- Department of Materials Science and Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan; Center for Micro/Nano Science and Technology, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan.
| | - Pei-Lin Shao
- Department of Materials Science and Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan
| | - Bernard Haochih Liu
- Department of Materials Science and Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan
| | - Te-Yu Tseng
- Department of Materials Science and Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan
| | - Chih-Yu Chang
- Department of Materials Science and Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan
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Gautam R, Vanga S, Madan A, Gayathri N, Nongthomba U, Umapathy S. Raman spectroscopic studies on screening of myopathies. Anal Chem 2015; 87:2187-94. [PMID: 25583313 DOI: 10.1021/ac503647x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Myopathies are among the major causes of mortality in the world. There is no complete cure for this heterogeneous group of diseases, but a sensitive, specific, and fast diagnostic tool may improve therapy effectiveness. In this study, Raman spectroscopy is applied to discriminate between muscle mutants in Drosophila on the basis of associated changes at the molecular level. Raman spectra were collected from indirect flight muscles of mutants, upheld(1) (up(1)), heldup(2) (hdp(2)), myosin heavy chain(7) (Mhc(7)), actin88F(KM88) (Act88F(KM88)), upheld(101) (up(101)), and Canton-S (CS) control group, for both 2 and 12 days old flies. Difference spectra (mutant minus control) of all the mutants showed an increase in nucleic acid and β-sheet and/or random coil protein content along with a decrease in α-helix protein. Interestingly, the 12th day samples of up(1) and Act88F(KM88) showed significantly higher levels of glycogen and carotenoids than CS. A principal components based linear discriminant analysis classification model was developed based on multidimensional Raman spectra, which classified the mutants according to their pathophysiology and yielded an overall accuracy of 97% and 93% for 2 and 12 days old flies, respectively. The up(1) and Act88F(KM88) (nemaline-myopathy) mutants form a group that is clearly separated in a linear discriminant plane from up(101) and hdp(2) (cardiomyopathy) mutants. Notably, Raman spectra from a human sample with nemaline-myopathy formed a cluster with the corresponding Drosophila mutant (up(1)). In conclusion, this is the first demonstration in which myopathies, despite their heterogeneity, were screened on the basis of biochemical differences using Raman spectroscopy.
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Affiliation(s)
- Rekha Gautam
- Department of Inorganic and Physical Chemistry, ‡Department of Molecular Reproduction, Development and Genetics, and ∥Department of Instrumentation and Applied Physics, Indian Institute of Science , Bangalore, 560012, India
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The many facets of Raman spectroscopy for biomedical analysis. Anal Bioanal Chem 2014; 407:699-717. [DOI: 10.1007/s00216-014-8311-9] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/20/2014] [Accepted: 10/31/2014] [Indexed: 12/13/2022]
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27
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Montalvan-Sorrosa D, González-Solis JL, Mas-Oliva J, Castillo R. Filamentous virus decoration with gold nanoparticles: global fingerprints of bionanocomposites acquired with SERS. RSC Adv 2014. [DOI: 10.1039/c4ra10656c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A bioconjugation reaction is used to obtain fd viruses with one gold nanoparticle at the tip and gold nanowire-like structures.
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Affiliation(s)
| | - J. L. González-Solis
- Centro Universitario de los Lagos
- Universidad de Guadalajara
- Lagos de Moreno, Mexico
| | - J. Mas-Oliva
- Instituto de Fisiología Celular
- Universidad Nacional Autónoma de México
- , Mexico
| | - R. Castillo
- Instituto de Física
- Universidad Nacional Autónoma de México
- , Mexico
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