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Shi S, Shi W, Zhou B, Qiu S. Research and Application of Chitosan Nanoparticles in Orthopedic Infections. Int J Nanomedicine 2024; 19:6589-6602. [PMID: 38979535 PMCID: PMC11228078 DOI: 10.2147/ijn.s468848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 06/15/2024] [Indexed: 07/10/2024] Open
Abstract
Orthopedic infection is one of the most intractable orthopedic problems. Bacteria resistant to antibiotics also develop gradually. Chitosan is widely used in the Biomedical field because of its high biocompatibility, biodegradability, and antibacterial activity. Chitosan-based drug delivery systems are frequently utilized to produce controlled medication release. When combined with antibiotics, synergistic antibacterial effects can be achieved. Chitosan-based nanoparticles are one of the most widely used applications in drug delivery systems. The focus of this review is to provide information on new methods being developed for chitosan-based nanoparticles in the field of bone infection treatment, including chitosan nanoparticles for antibacterial purposes, Ch-loaded with antibiotics, Ch-loaded with metal, and used as immune adjuvants. It may Provide ideas for the fundamental research and the prospects of future clinical applications of orthopedic infections.
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Affiliation(s)
- Sifeng Shi
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, People’s Republic of China
| | - Weiran Shi
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, People’s Republic of China
| | - Bing Zhou
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, People’s Republic of China
| | - Shang Qiu
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, People’s Republic of China
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Ghaithi AKA, Al Maskari SM, Al Mutani MM, Bimani AMA, Al Jabri Z, Badi KSA, Husband J. Specific discrimination of pathogenic bacteria causing septic arthritis using Raman spectroscopy: In-vitro study. Diagn Microbiol Infect Dis 2024; 109:116339. [PMID: 38735148 DOI: 10.1016/j.diagmicrobio.2024.116339] [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: 02/14/2024] [Revised: 04/14/2024] [Accepted: 05/03/2024] [Indexed: 05/14/2024]
Abstract
In this study we performed preliminary experiments using Raman spectroscopy as an evolving technology in biofluid and microbial characterization, to explore its potential for rapid diagnosis of pathogenic bacteria in an in-vitro synovial fluid infection model. Normal human synovial fluids samples were collected from patients undergoing knee surgery and the three most common pathogenic bacteria introduced in-vitro into the samples. The bacterial growth was systematically monitored using a Raman spectroscopy. Multivariate regression analysis of acquired spectra showed bacterial characteristic Raman bands related to bacterial cell membranes and DNA structures to increase continuously as the incubation period was increased. Spectra signature recorded from cultured synovial fluid samples showed a significant loss in synovial quality and protein morphology over time compared to control samples. In this study, Raman spectroscopy shows promise for rapid pathogenic bacteria identification in synovial fluid. Marker peaks distinguished inoculated bacteria, while chemical changes reveal infection dynamics.
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Affiliation(s)
- Ahmed K Al Ghaithi
- Department of Surgery, Division of Orthopedic, Sultan Qaboos University, Muscat, Oman.
| | - Sultan M Al Maskari
- Department of Surgery, Division of Orthopedic, Sultan Qaboos University, Muscat, Oman
| | - Mohammad M Al Mutani
- Department of Surgery, Division of Orthopedic, Sultan Qaboos University, Muscat, Oman
| | - Atika M Al Bimani
- Department of Microbiology, College of Medicine, Sultan Qaboos University, Muscat, Oman
| | - Zaaima Al Jabri
- Department of Microbiology, College of Medicine, Sultan Qaboos University, Muscat, Oman
| | - Khoula S Al Badi
- Department of Surgery, Division of Orthopedic, Sultan Qaboos University, Muscat, Oman
| | - John Husband
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, Oman
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3
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Araujo EMDS, Vidal CDMP, Zhu M, Banas JA, Freitas AZD, Wetter NU, Matos AB. Comparison of biofilm models for producing artificial active white spot lesions. J Appl Oral Sci 2024; 32:e20230458. [PMID: 38922241 PMCID: PMC11182642 DOI: 10.1590/1678-7757-2023-0458] [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: 12/21/2023] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 06/27/2024] Open
Abstract
OBJECTIVE This study compared three protocols for developing artificial white spot lesions (WSL) using biofilm models. METHODOLOGY In total, 45 human enamel specimens were sterilized and allocated into three groups based on the biofilm model: Streptococcus sobrinus and Lactobacillus casei (Ss+Lc), Streptococcus sobrinus (Ss), or Streptococcus mutans (Sm). Specimens were incubated in filter-sterilized human saliva to form the acquired pellicle and then subjected to the biofilm challenge consisting of three days of incubation with bacteria (for demineralization) and one day of remineralization, which was performed once for Ss+Lc (four days total), four times for Ss (16 days total), and three times for Sm (12 days total). After WSL creation, the lesion fluorescence, depth, and chemical composition were assessed using Quantitative Light-induced Fluorescence (QLF), Polarized Light Microscopy (PLM), and Raman Spectroscopy, respectively. Statistical analysis consisted of two-way ANOVA followed by Tukey's post hoc test (α=0.05). WSL created using the Ss+Lc protocol presented statistically significant higher fluorescence loss (ΔF) and integrated fluorescence (ΔQ) in comparison to the other two protocols (p<0.001). RESULTS In addition, Ss+Lc resulted in significantly deeper WSL (137.5 µm), followed by Ss (84.1 µm) and Sm (54.9 µm) (p<0.001). While high mineral content was observed in sound enamel surrounding the WSL, lesions created with the Ss+Lc protocol showed the highest demineralization level and changes in the mineral content among the three protocols. CONCLUSION The biofilm model using S. sobrinus and L. casei for four days was the most appropriate and simplified protocol for developing artificial active WSL with lower fluorescence, higher demineralization, and greater depth.
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Affiliation(s)
- Erika Michele Dos Santos Araujo
- The University of Iowa, College of Dentistry, Iowa Institute for Oral Health Research,Iowa City, IA, USA
- Universidade de São Paulo, Faculdade de Odontologia, Departamento de Dentística, São Paulo, SP, Brasil
| | | | - Min Zhu
- The University of Iowa, College of Dentistry, Iowa Institute for Oral Health Research,Iowa City, IA, USA
| | - Jeffrey A Banas
- The University of Iowa, College of Dentistry, Iowa Institute for Oral Health Research,Iowa City, IA, USA
- The University of Iowa, College of Dentistry, Department of Pediatric Dentistry, Iowa City, IA, USA
| | - Anderson Zanardi de Freitas
- Universidade de São Paulo, Instituto de Pesquisas Energéticas e Nucleares (IPEN), Centro de Lasers e Aplicações, São Paulo, SP, Brasil
| | - Niklaus Ursus Wetter
- Universidade de São Paulo, Instituto de Pesquisas Energéticas e Nucleares (IPEN), Centro de Lasers e Aplicações, São Paulo, SP, Brasil
| | - Adriana Bona Matos
- Universidade de São Paulo, Faculdade de Odontologia, Departamento de Dentística, São Paulo, SP, Brasil
- Universidade Católica Portuguesa, Faculdade de Medicina Dentária, Viseu, Portugal
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Zanghellini B, Zechmann N, Baurecht D, Grünewald TA, Burghammer M, Liegl-Atzwanger B, Leithner A, Davydok A, Lichtenegger H. Multimodal analysis and comparison of stoichiometric and structural characteristics of parosteal and conventional osteosarcoma with massive sclerosis in human bone. J Struct Biol 2024; 216:108106. [PMID: 38871094 DOI: 10.1016/j.jsb.2024.108106] [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: 11/28/2023] [Revised: 06/10/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024]
Abstract
Osteosarcoma (OS) is the most common malignant primary bone tumor in humans and occurs in various subtypes. Tumor formation happens through malignant osteoblasts producing immature bone. In the present paper we studied two different subtypes of osteosarcoma, from one individual with conventional OS with massive sclerosis and one individual with parosteal OS, based on a multimodal approach including small angle x-ray scattering (SAXS), wide angle x-ray diffraction (WAXS), backscattered electron imaging (BEI) and Raman spectroscopy. It was found that both tumors showed reduced mineral particle sizes and degree of orientation of the collagen-mineral composite in the affected areas, alongside with a decreased crystallinity. Distinct differences between the tumor material from the two individuals were found in the degree of mineralization. Further differences were observed in the carbonate to phosphate ratio, which is related to the degree of carbonate substitution in bone mineral and indicative of the turnover rate. The contraction of the c-axis of the bone mineral crystals proved to be a further, very sensitive parameter, potentially indicative of malignancy.
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Affiliation(s)
| | - Nicole Zechmann
- Department of Orthopedics and Trauma, Medical University of Graz, Austria
| | - Dieter Baurecht
- Instiute of Physical Chemistry, University of Vienna, Austria
| | - Tilman A Grünewald
- Aix Marseille Univ, CNRS, Centrale Med, Institut Fresnel, Marseille, France
| | | | | | - Andreas Leithner
- Department of Orthopedics and Trauma, Medical University of Graz, Austria
| | - Anton Davydok
- Institute of Materials Physics, Helmholtz Zentrum Hereon, Hamburg, Germany
| | - Helga Lichtenegger
- Institute of Physics and Material Science, BOKU University, Vienna, Austria.
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Chen K, Yao C, Sun M, Li Q, Luo Z, Lan Y, Chen Y, Chen S. Raman spectroscopic analysis for osteoporosis identification in humans with hip fractures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124193. [PMID: 38569386 DOI: 10.1016/j.saa.2024.124193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/02/2024] [Accepted: 03/25/2024] [Indexed: 04/05/2024]
Abstract
Osteoporosis is a significant health concern. While multiple techniques have been utilized to diagnose this condition, certain limitations still persist. Raman spectroscopy has shown promise in predicting bone strength in animal models, but its application to humans requires further investigation. In this study, we present an in vitro approach for predicting osteoporosis in 10 patients with hip fractures using Raman spectroscopy. Raman spectra were acquired from exposed femoral heads collected during surgery. Employing a leave-one-out cross-validated linear discriminant analysis (LOOCV-LDA), we achieved accurate classification (90 %) between osteoporotic and osteopenia groups. Additionally, a LOOCV partial least squares regression (PLSR) analysis based on the complete Raman spectra demonstrated a significant prediction (r2 = 0.84, p < 0.05) of bone mineral density as measured by dual X-ray absorptiometry (DXA). To the best of our knowledge, this study represents the first successful demonstration of Raman spectroscopy correlating with osteoporotic status in humans.
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Affiliation(s)
- Keren Chen
- Foshan Graduate School of Innovation, Northeastern University, Foshan 528311, China.
| | - Chunguang Yao
- Foshan Graduate School of Innovation, Northeastern University, Foshan 528311, China; College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
| | - Mengya Sun
- Foshan Graduate School of Innovation, Northeastern University, Foshan 528311, China; College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
| | - Qiang Li
- The Fifth People's Hospital of Foshan, Foshan 528211, China
| | - Zhaoxin Luo
- The Fifth People's Hospital of Foshan, Foshan 528211, China
| | - Yifeng Lan
- The Fifth People's Hospital of Foshan, Foshan 528211, China
| | - Yangxin Chen
- The Fifth People's Hospital of Foshan, Foshan 528211, China.
| | - Shuo Chen
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China; Key Laboratory of Intelligent Computing in Medical Image, Ministry of Education, Northeastern University, Shenyang 110169, China.
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Saxena K, Ann CM, Azwar MABM, Banavar SR, Matinlinna J, Peters OA, Daood U. Effect of strontium fluoride on mechanical and remineralization properties of enamel: An in-vitro study on a modified orthodontic adhesive. Dent Mater 2024; 40:811-823. [PMID: 38490919 DOI: 10.1016/j.dental.2024.02.010] [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: 10/12/2023] [Revised: 01/05/2024] [Accepted: 02/12/2024] [Indexed: 03/17/2024]
Abstract
OBJECTIVES Evaluate the ability of strontium fluoride on bond strength and enamel integrity after incorporation within orthodontic adhesive system as a delivery vehicle. METHODS Experimental orthodontic adhesive system Transbond™ XT were modified with 1% Sr2+, 0.5% SrF2, 1% strontium, 0.5% Sr2+, 1% F-, 0.5% F-, and no additions were control. Mixing of formulation was monitored using Fourier transform infrared spectroscopy. Small-molecule drug-discovery suite was used to gain insights into Sr2+, F-, and SrF2 binding. Shear bond testing was performed after 6-months of ageing. Enamel blocks were cut, and STEM pictures were recorded. Specimens were indented to evaluate elastic modulus. Raman microscope was used to collect Raman spectra and inspected using a scanning electron microscope. Crystal structural analysis was performed using X-ray diffraction. Effect of material on cellular proliferation was determined. Confocal was performed to evaluate the effect of formulation on biofilms. RESULTS FTIR of modified adhesives depicted peak changes within range due to various functional groups existing within samples. TEM represented structurally optimized hexagonal unit-cell of hydroxyapatite. Mean shear bond strength is recorded highest for Transbond XT with 1% SrF2. Dead bacterial percentage appeared higher in 0.5% SrF2 and 1% F- specimens. Crystal lengths showed an increase in 0.5% and 1% SrF2 specimens. Phase contrast within TEM images showed a union of 0.5% SrF2 crystal with enamel crystal with higher elastic modulus and highly mineralized crystalline hydroxyapatite. Intensity of ν1 PO43- and ν1 CO32- along with carbonate - / ν1PO43- ratio displayed good association with strontium fluoride. The formulation showed acceptable cell biocompatibility (p < 0.353). All specimens displayed characteristic diffraction maxima of different apatite angles within XRD. SIGNIFICANCE Experimental results suggested good biocompatibility, adequate mechanical strength, and far-ranging crystallization ability. This would provide a new strategy to overcome the two major challenges of fixed orthodontics, biofilm growth, and demineralization of enamel.
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Affiliation(s)
- Kirti Saxena
- Children and Community Oral Health, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Chew Ming Ann
- Restorative Dentistry Division, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur 57000, Malaysia
| | - Masturina Anati Binti Mohd Azwar
- Restorative Dentistry Division, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur 57000, Malaysia
| | - Spoorthi Ravi Banavar
- Children and Community Oral Health, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Jukka Matinlinna
- Dental Materials Science, Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Special Administrative Regions of China; Biomaterials Science, Division of Dentistry, School of Medical Sciences, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Ove A Peters
- Department of Endodontics, Arthur A Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA; School of Dentistry, The University of Queensland, Herston, Qld 4006, Australia
| | - Umer Daood
- Restorative Dentistry Division, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur 57000, Malaysia; Dental Materials Science, Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Special Administrative Regions of China.
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Kumar S, Acharya TK, Kumar S, Rokade TP, Das NK, Chawla S, Goswami L, Goswami C. TRPV4 Activator-Containing CMT-Hy Hydrogel Enhances Bone Tissue Regeneration In Vivo by Enhancing Mitochondrial Health. ACS Biomater Sci Eng 2024; 10:2367-2384. [PMID: 38470969 DOI: 10.1021/acsbiomaterials.3c01304] [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] [Indexed: 03/14/2024]
Abstract
Treating different types of bone defects is difficult, complicated, time-consuming, and expensive. Here, we demonstrate that transient receptor potential cation channel subfamily V member 4 (TRPV4), a mechanosensitive, thermogated, and nonselective cation channel, is endogenously present in the mesenchymal stem cells (MSCs). TRPV4 regulates both cytosolic Ca2+ levels and mitochondrial health. Accordingly, the hydrogel made from a natural modified biopolymer carboxymethyl tamarind CMT-Hy and encapsulated with TRPV4-modulatory agents affects different parameters of MSCs, such as cell morphology, focal adhesion points, intracellular Ca2+, and reactive oxygen species- and NO-levels. TRPV4 also regulates cell differentiation and biomineralization in vitro. We demonstrate that 4α-10-CMT-Hy and 4α-50-CMT-Hy (the hydrogel encapsulated with 4αPDD, 10 and 50 nM, TRPV4 activator) surfaces upregulate mitochondrial health, i.e., an increase in ATP- and cardiolipin-levels, and improve the mitochondrial membrane potential. The same scaffold turned out to be nontoxic in vivo. 4α-50-CMT-Hy enhances the repair of the bone-drill hole in rat femur, both qualitatively and quantitatively in vivo. We conclude that 4α-50-CMT-Hy as a scaffold is suitable for treating large-scale bone defects at low cost and can be tested for clinical trials.
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Affiliation(s)
- Satish Kumar
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni 752050, Odisha, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research, Khordha, Jatni 752050, Odisha, India
| | - Tusar K Acharya
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni 752050, Odisha, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research, Khordha, Jatni 752050, Odisha, India
| | - Shamit Kumar
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni 752050, Odisha, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research, Khordha, Jatni 752050, Odisha, India
| | - Tejas P Rokade
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni 752050, Odisha, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research, Khordha, Jatni 752050, Odisha, India
| | - Nilesh K Das
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni 752050, Odisha, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research, Khordha, Jatni 752050, Odisha, India
| | - Saurabh Chawla
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni 752050, Odisha, India
| | - Luna Goswami
- School of Biotechnology, KIIT Deemed to be University, Patia, Bhubaneswar 751024, India
- School of Chemical Technology, KIIT Deemed to be University, Patia, Bhubaneswar 751024, India
| | - Chandan Goswami
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Khordha, Jatni 752050, Odisha, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research, Khordha, Jatni 752050, Odisha, India
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Balikci E, Baran ET, Tahmasebifar A, Yilmaz B. Characterization of Collagen from Jellyfish Aurelia aurita and Investigation of Biomaterials Potentials. Appl Biochem Biotechnol 2024:10.1007/s12010-023-04848-5. [PMID: 38224393 DOI: 10.1007/s12010-023-04848-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2023] [Indexed: 01/16/2024]
Abstract
Marine collagen sources are potent alternatives due to abundant yield, low pathogen infection risk, high biocompatibility, and any religious and ethical restrictions compared to terrestrial collagen sources. In this research, we aim to investigate the biomaterials potential of the collagen from Aurelia aurita, which is a native jellyfish species in the Marmara Sea. Spectroscopic techniques were used to investigate the structure of jellyfish collagen (JCol) from acid-soluble fraction and compared to Jellagen® from Rhizostoma pulmo. MALDI-TOF showed the main peak of Jellagen® at 276,765.161 Da and jellyfish collagen at 276,761.687 Da. SDS-PAGE indicated α1 and α2 bands at about 122 kDa and 140 kDa, respectively. In FTIR and Raman spectra, the locations of amide bands of both species were almost the same. The pI of JCol was determined as 4.46. The particle size decreased abruptly at 43 oC from 890 to 290 nm. Water, organic and inorganic ratios of collagen were determined at 7.14%, 63.59, and 29.27 respectively. In DSC, the denaturation temperature (Td) of JCol was found at 43.7 oC and found to be higher than that of the collagens from jellyfishes that have been reported so far in the literature. Biocompatibility testing by metabolic assay revealed significantly higher fibroblast proliferation on collagen film than on the Tissue Culture Plate. To conclude, Aurelia aurita collagen would be a suitable source of collagen when biomaterials are needed to have high biocompatibility and unique macromolecular properties such as high denaturation temperatures.
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Affiliation(s)
- Elif Balikci
- University of Health Sciences Turkey, Institute of Health Sciences, Department of Tissue Engineering, 34668, Istanbul, Turkey
- University of Health Sciences Turkey, Experimental Medicine Application and Research Center, Uskudar, 34662, Istanbul, Turkey
- University of Health Sciences Turkey, Regenerative Medicine Application and Research Center, Uskudar, 34668, Istanbul, Turkey
| | - Erkan Türker Baran
- University of Health Sciences Turkey, Institute of Health Sciences, Department of Tissue Engineering, 34668, Istanbul, Turkey.
- University of Health Sciences Turkey, Experimental Medicine Application and Research Center, Uskudar, 34662, Istanbul, Turkey.
- University of Health Sciences Turkey, Regenerative Medicine Application and Research Center, Uskudar, 34668, Istanbul, Turkey.
- University of Health Sciences Turkey, Institute of Health Sciences, Department of Biomaterials, 34668, Istanbul, Turkey.
| | - Aydin Tahmasebifar
- University of Health Sciences Turkey, Institute of Health Sciences, Department of Tissue Engineering, 34668, Istanbul, Turkey
- University of Health Sciences Turkey, Experimental Medicine Application and Research Center, Uskudar, 34662, Istanbul, Turkey
- University of Health Sciences Turkey, Regenerative Medicine Application and Research Center, Uskudar, 34668, Istanbul, Turkey
- University of Health Sciences Turkey, Institute of Health Sciences, Department of Biomaterials, 34668, Istanbul, Turkey
| | - Bengi Yilmaz
- University of Health Sciences Turkey, Institute of Health Sciences, Department of Tissue Engineering, 34668, Istanbul, Turkey
- University of Health Sciences Turkey, Experimental Medicine Application and Research Center, Uskudar, 34662, Istanbul, Turkey
- University of Health Sciences Turkey, Regenerative Medicine Application and Research Center, Uskudar, 34668, Istanbul, Turkey
- University of Health Sciences Turkey, Institute of Health Sciences, Department of Biomaterials, 34668, Istanbul, Turkey
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Shin M, Pelletier MH, Lovric V, Walsh WR, Martens PJ, Kruzic JJ, Gludovatz B. Effect of gamma irradiation and supercritical carbon dioxide sterilization with Novakill™ or ethanol on the fracture toughness of cortical bone. J Biomed Mater Res B Appl Biomater 2024; 112:e35356. [PMID: 38247241 DOI: 10.1002/jbm.b.35356] [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: 04/22/2023] [Revised: 09/15/2023] [Accepted: 11/11/2023] [Indexed: 01/23/2024]
Abstract
Sterilization of structural bone allografts is a critical process prior to their clinical use in large cortical bone defects. Gamma irradiation protocols are known to affect tissue integrity in a dose dependent manner. Alternative sterilization treatments, such as supercritical carbon dioxide (SCCO2 ), are gaining popularity due to advantages such as minimal exposure to denaturants, the lack of toxic residues, superior tissue penetration, and minor impacts on mechanical properties including strength and stiffness. The impact of SCCO2 on the fracture toughness of bone tissue, however, remains unknown. Here, we evaluate crack initiation and growth toughness after 2, 6, and 24 h SCCO2 -treatment using Novakill™ and ethanol as additives on ~11 samples per group obtained from a pair of femur diaphyses of a canine. All mechanical testing was performed at ambient air after 24 h soaking in Hanks' balanced salt solution (HBSS). Results show no statistically significant difference in the failure characteristics of the Novakill™-treated groups whereas crack growth toughness after 6 and 24 h of treatment with ethanol significantly increases by 37% (p = .010) and 34% (p = .038), respectively, compared to an untreated control group. In contrast, standard 25 kGy gamma irradiation causes significantly reduced crack growth resistance by 40% (p = .007) compared to untreated bone. FTIR vibrational spectroscopy, conducted after testing, reveals a consistent trend of statistically significant differences (p < .001) with fracture toughness. These trends align with variations in the ratios of enzymatic mature to immature crosslinks in the collagen structure, suggesting a potential association with fracture toughness. Additional Raman spectroscopy after testing shows a similar trend with statistically significant differences (p < .005), which further supports that collagen structural changes occur in the SCF-treated groups with ethanol after 6 and 24 h. Our work reveals the benefits of SCCO2 sterilization compared to gamma irradiation.
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Affiliation(s)
- Mihee Shin
- School of Mechanical and Manufacturing Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, Australia
| | - Matthew H Pelletier
- Surgical and Orthopedic Research Laboratories, Prince of Wales Clinical School, University of New South Wales (UNSW Sydney), Sydney, New South Wales, Australia
| | - Vedran Lovric
- Surgical and Orthopedic Research Laboratories, Prince of Wales Clinical School, University of New South Wales (UNSW Sydney), Sydney, New South Wales, Australia
| | - William R Walsh
- Surgical and Orthopedic Research Laboratories, Prince of Wales Clinical School, University of New South Wales (UNSW Sydney), Sydney, New South Wales, Australia
| | - Penny J Martens
- Graduate School of Biomedical Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, Australia
| | - Jamie J Kruzic
- School of Mechanical and Manufacturing Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, Australia
| | - Bernd Gludovatz
- School of Mechanical and Manufacturing Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, Australia
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10
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S D Corrêa H, Alessandri I, Verzeletti A. Assessing the usefulness of Raman spectroscopy and lipid analysis of decomposed human bones in forensic genetics and molecular taphonomy. Forensic Sci Int 2024; 354:111881. [PMID: 38000148 DOI: 10.1016/j.forsciint.2023.111881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/18/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023]
Abstract
Bones are among the structures most likely to be recovered after death. However, the low quantity of preserved DNA and complex processing from sample to DNA profile make forensic DNA analysis of bones a challenging task. Raman spectroscopy and gas chromatography-mass spectrometry (GC/MS), have the potential to be useful as screening tools for DNA analysis and in decomposition studies. The objective of this research was to assess the usefulness of such molecular investigations. Femur samples collected from 50 decomposing human bodies were subjected to Raman spectroscopy and GC/MS. Assessment of nuclear DNA quantity and short tandem repeat (STR) genotyping efficiency were also performed. Raman parameters (crystallinity, carbonate-to-phosphate ratio, mineral-to-matrix ratio) and detected lipids were recorded. Background fluorescence proved problematic for Raman analysis of forensic bones. Regardless, it was not associated with less preserved DNA or less detected STR alleles. Fatty acids, hydrocarbons, and five types of fatty acid methyl esters (FAMEs) were detected. The main phosphate peak position in Raman spectra was significantly correlated with preserved DNA (p = 0.03713), while significantly more STR alleles were detected in bones containing methyl hexadecenoate (p = 0.04236). Detection of FAMEs in the bone matrix suggests a reaction between methanol produced by bacteria and free fatty acids, which are not associated with the level of preservation of endogenous DNA. The techniques assessed have shown to be useful in molecular taphonomy studies and forensic genetics.
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Affiliation(s)
- Heitor S D Corrêa
- Institute of Legal Medicine, Department of Medico-surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy; Forensic DNA Laboratory, Politec/MT, Cuiabá, Brazil.
| | - Ivano Alessandri
- INSTM and Sustainable Chemistry and Materials Laboratory, Department of Information Engineering, University of Brescia, Brescia, Italy
| | - Andrea Verzeletti
- Institute of Legal Medicine, Department of Medico-surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
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11
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Lindtner RA, Wurm A, Pirchner E, Putzer D, Arora R, Coraça-Huber DC, Schirmer M, Badzoka J, Kappacher C, Huck CW, Pallua JD. Enhancing Bone Infection Diagnosis with Raman Handheld Spectroscopy: Pathogen Discrimination and Diagnostic Potential. Int J Mol Sci 2023; 25:541. [PMID: 38203710 PMCID: PMC10778662 DOI: 10.3390/ijms25010541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Osteomyelitis is a bone disease caused by bacteria that can damage bone. Raman handheld spectroscopy has emerged as a promising diagnostic tool for detecting bone infection and can be used intraoperatively during surgical procedures. This study involved 120 bone samples from 40 patients, with 80 samples infected with either Staphylococcus aureus or Staphylococcus epidermidis. Raman handheld spectroscopy demonstrated successful differentiation between healthy and infected bone samples and between the two types of bacterial pathogens. Raman handheld spectroscopy appears to be a promising diagnostic tool in bone infection and holds the potential to overcome many of the shortcomings of traditional diagnostic procedures. Further research, however, is required to confirm its diagnostic capabilities and consider other factors, such as the limit of pathogen detection and optimal calibration standards.
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Affiliation(s)
- Richard Andreas Lindtner
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.A.L.); (A.W.); (E.P.); (D.P.); (R.A.); (D.C.C.-H.)
| | - Alexander Wurm
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.A.L.); (A.W.); (E.P.); (D.P.); (R.A.); (D.C.C.-H.)
- Praxis Dr. Med. Univ. Alexander Wurm FA für Orthopädie und Traumatologie, Koflerweg 7, 6275 Stumm, Austria
| | - Elena Pirchner
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.A.L.); (A.W.); (E.P.); (D.P.); (R.A.); (D.C.C.-H.)
| | - David Putzer
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.A.L.); (A.W.); (E.P.); (D.P.); (R.A.); (D.C.C.-H.)
| | - Rohit Arora
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.A.L.); (A.W.); (E.P.); (D.P.); (R.A.); (D.C.C.-H.)
| | - Débora Cristina Coraça-Huber
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.A.L.); (A.W.); (E.P.); (D.P.); (R.A.); (D.C.C.-H.)
| | - Michael Schirmer
- Department of Internal Medicine, Clinic II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria;
| | - Jovan Badzoka
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (J.B.); (C.K.); (C.W.H.)
| | - Christoph Kappacher
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (J.B.); (C.K.); (C.W.H.)
| | - Christian Wolfgang Huck
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (J.B.); (C.K.); (C.W.H.)
| | - Johannes Dominikus Pallua
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.A.L.); (A.W.); (E.P.); (D.P.); (R.A.); (D.C.C.-H.)
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12
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Liu H, Jiang H, Liu X, Wang X. Physicochemical understanding of biomineralization by molecular vibrational spectroscopy: From mechanism to nature. EXPLORATION (BEIJING, CHINA) 2023; 3:20230033. [PMID: 38264681 PMCID: PMC10742219 DOI: 10.1002/exp.20230033] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/25/2023] [Indexed: 01/25/2024]
Abstract
The process and mechanism of biomineralization and relevant physicochemical properties of mineral crystals are remarkably sophisticated multidisciplinary fields that include biology, chemistry, physics, and materials science. The components of the organic matter, structural construction of minerals, and related mechanical interaction, etc., could help to reveal the unique nature of the special mineralization process. Herein, the paper provides an overview of the biomineralization process from the perspective of molecular vibrational spectroscopy, including the physicochemical properties of biomineralized tissues, from physiological to applied mineralization. These physicochemical characteristics closely to the hierarchical mineralization process include biological crystal defects, chemical bonding, atomic doping, structural changes, and content changes in organic matter, along with the interface between biocrystals and organic matter as well as the specific mechanical effects for hardness and toughness. Based on those observations, the special physiological properties of mineralization for enamel and bone, as well as the possible mechanism of pathological mineralization and calcification such as atherosclerosis, tumor micro mineralization, and urolithiasis are also reviewed and discussed. Indeed, the clearly defined physicochemical properties of mineral crystals could pave the way for studies on the mechanisms and applications.
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Affiliation(s)
- Hao Liu
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
| | - Hui Jiang
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
| | - Xiaohui Liu
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
| | - Xuemei Wang
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
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13
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Shah SA, Salehi H, Cavaillès V, Fernandez F, Cuisinier F, Collart-Dutilleul PY, Desoutter A. Characterization of rat vertebrae cortical bone microstructures using confocal Raman microscopy combined to tomography and electron microscopy. Ann Anat 2023; 250:152162. [PMID: 37774934 DOI: 10.1016/j.aanat.2023.152162] [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: 03/21/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 10/01/2023]
Abstract
BACKGROUND The rat vertebrae is a good model to study bone regeneration after implantation of biomaterials used to treat bone loss, a major problem in oral and dental surgery. However, the precise characterization of bone microstructures in the rat vertebrae has not been reported. Therefore, the aim of this study was to achieve the complete analysis of such bone, at different scales, in order to have a clear model of healthy bone for comparison with regenerated bone. METHODS In order to image the cortical bone of rat caudal vertebra, confocal Raman microscopy was combined with high resolution X-ray micro computed tomography (micro-CT), with scanning electron microscopy (SEM) using backscatter electron imaging and with more conventional histology coloration techniques. SEM and Raman microscopy were done in various regions of the cortical bone corresponding to external, middle and internal areas. The spongy bone was imaged in parallel. Micro-CT was performed on the whole vertebra to monitor the network of haversian canals in the cortical bone. Osteonic canals characteristics, and relative chemical composition were analysed in several regions of interest, in cortical and spongy bone. Five rats were included in this study. RESULTS On micro-CT images, differences in intensity were observed in the cortical bone, substantiated by SEM. Chemical analysis with Raman spectra confirmed the difference in composition between the different regions of the cortical and spongy bone. PCA and k-mean cluster analysis separated these groups, except for the external and middle cortical bone. Peak intensity ratio confirmed these results with a CO3 to ν2 PO4 ratio significantly different for the internal cortical bone. Grayscale images stack extracted from micro-CT showed that global architecture of cortical bone was characterized by a dense and complex network of haversian osteonic canals, starting from the surface towards the vertebrae center. The mean diameter of the canals was 18.4 µm (SD 8.6 µm) and the mean length was 450 µm (SD 152 µm). Finally, Raman reconstructed images of the lamellar bone showed an enlargement of the lamellar layer width, both in circumferential lamellar bone and around haversian canals. CONCLUSIONS Micro-CT and confocal Raman microscopy are good tools to complete classical analysis using optical and electron microscopy. The results and measurements presented in a rat model known for its small inter-individual differences provide the main characteristics of a mature bone. This study will allow the community working on this rat vertebrate model to have a set of characteristics, in particular on the structure of the haversian canals.
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Affiliation(s)
- S A Shah
- LBN, Univ. Montpellier, Montpellier, France
| | - H Salehi
- LBN, Univ. Montpellier, Montpellier, France
| | - V Cavaillès
- IRCM, INSERM U1194, Univ. Montpellier, Montpellier, France
| | | | - F Cuisinier
- LBN, Univ. Montpellier, Montpellier, France; UFR Odontologie, Univ. Montpellier, Montpellier, France
| | - P-Y Collart-Dutilleul
- LBN, Univ. Montpellier, Montpellier, France; UFR Odontologie, Univ. Montpellier, Montpellier, France; Service Odontologie, CHU de Montpellier, Montpellier, France
| | - A Desoutter
- LBN, Univ. Montpellier, Montpellier, France.
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14
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Woess C, Huck CW, Badzoka J, Kappacher C, Arora R, Lindtner RA, Zelger P, Schirmer M, Rabl W, Pallua J. Raman spectroscopy for postmortem interval estimation of human skeletal remains: A scoping review. JOURNAL OF BIOPHOTONICS 2023; 16:e202300189. [PMID: 37494000 DOI: 10.1002/jbio.202300189] [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: 05/24/2023] [Revised: 07/19/2023] [Accepted: 07/22/2023] [Indexed: 07/27/2023]
Abstract
Estimating postmortem intervals (PMI) is crucial in forensic investigations, providing insights into criminal cases and determining the time of death. PMI estimation relies on expert experience and a combination of thanatological data and environmental factors but is prone to errors. The lack of reliable methods for assessing PMI in bones and soft tissues necessitates a better understanding of bone decomposition. Several research groups have shown promise in PMI estimation in skeletal remains but lack valid data for forensic cases. Current methods are costly, time-consuming, and unreliable for PMIs over 5 years. Raman spectroscopy (RS) can potentially estimate PMI by studying chemical modifications in bones and teeth correlated with burial time. This review summarizes RS applications, highlighting its potential as an innovative, nondestructive, and fast technique for PMI estimation in forensic medicine.
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Affiliation(s)
- C Woess
- Institute of Forensic Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian W Huck
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria
| | - J Badzoka
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria
| | - C Kappacher
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria
| | - R Arora
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - R A Lindtner
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Philipp Zelger
- University Clinic for Hearing, Voice and Speech Disorders, Medical University of Innsbruck, Innsbruck, Austria
| | - M Schirmer
- Department of Internal Medicine, Clinic II, Medical University of Innsbruck, Innsbruck, Austria
| | - W Rabl
- Institute of Forensic Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes Pallua
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
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15
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Quansah E, Shaik TA, Çevik E, Wang X, Höppener C, Meyer-Zedler T, Deckert V, Schmitt M, Popp J, Krafft C. Investigating biochemical and structural changes of glycated collagen using multimodal multiphoton imaging, Raman spectroscopy, and atomic force microscopy. Anal Bioanal Chem 2023; 415:6257-6267. [PMID: 37640827 PMCID: PMC10558391 DOI: 10.1007/s00216-023-04902-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/31/2023]
Abstract
Advanced glycation end products (AGEs) form extracellular crosslinking with collagenous proteins, which contributes to the development of diabetic complications. In this study, AGEs-related pentosidine (PENT) crosslinks-induced structural and biochemical changes are studied using multimodal multiphoton imaging, Raman spectroscopy and atomic force microscopy (AFM). Decellularized equine pericardium (EP) was glycated with four ribose concentrations ranging between 5 and 200 mM and monitored for up to 30 days. Two-photon excited fluorescence (TPEF) and second harmonic generation (SHG) microscopic imaging probed elastin and collagen fibers, respectively. The glycated EP showed a decrease in the SHG intensities associated with loss of non-centrosymmetry of collagen and an increase of TPEF intensities associated with PENT crosslinks upon glycation. TPEF signals from elastin fibers were unaffected. A three-dimensional reconstruction with SHG + TPEF z-stack images visualized the distribution of collagen and elastin within the EP volume matrix. In addition, Raman spectroscopy (RS) detected changes in collagen-related bands and discriminated glycated from untreated EP. Furthermore, AFM scans showed that the roughness increases and the D-unit structure of fibers remained unchanged during glycation. The PENT crosslinked-induced changes are discussed in the context of previous studies of glutaraldehyde- and genipin-induced crosslinking and collagenase-induced digestion of collagen. We conclude that TPEF, SHG, RS, and AFM are effective, label-free, and non-destructive methods to investigate glycated tissues, differentiate crosslinking processes, and characterize general collagen-associated and disease-related changes, in particular by their RS fingerprints.
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Affiliation(s)
- Elsie Quansah
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Member of the Leibniz Center for Photonics in Infectious Research (LPI), Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Tanveer Ahmed Shaik
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Ecehan Çevik
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Xinyue Wang
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Member of the Leibniz Center for Photonics in Infectious Research (LPI), Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Christiane Höppener
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Member of the Leibniz Center for Photonics in Infectious Research (LPI), Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Tobias Meyer-Zedler
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Member of the Leibniz Center for Photonics in Infectious Research (LPI), Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Volker Deckert
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Member of the Leibniz Center for Photonics in Infectious Research (LPI), Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Michael Schmitt
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Member of the Leibniz Center for Photonics in Infectious Research (LPI), Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Member of the Leibniz Center for Photonics in Infectious Research (LPI), Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Christoph Krafft
- Leibniz Institute of Photonic Technology (IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Center for Photonics in Infectious Research (LPI), Albert-Einstein-Straße 9, 07745, Jena, Germany.
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16
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Lindtner R, Wurm A, Kugel K, Kühn J, Putzer D, Arora R, Coraça-Huber DC, Zelger P, Schirmer M, Badzoka J, Kappacher C, Huck CW, Pallua JD. Comparison of Mid-Infrared Handheld and Benchtop Spectrometers to Detect Staphylococcus epidermidis in Bone Grafts. Bioengineering (Basel) 2023; 10:1018. [PMID: 37760120 PMCID: PMC10525239 DOI: 10.3390/bioengineering10091018] [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: 06/05/2023] [Revised: 08/18/2023] [Accepted: 08/24/2023] [Indexed: 09/29/2023] Open
Abstract
Bone analyses using mid-infrared spectroscopy are gaining popularity, especially with handheld spectrometers that enable on-site testing as long as the data quality meets standards. In order to diagnose Staphylococcus epidermidis in human bone grafts, this study was carried out to compare the effectiveness of the Agilent 4300 Handheld Fourier-transform infrared with the Perkin Elmer Spectrum 100 attenuated-total-reflectance infrared spectroscopy benchtop instrument. The study analyzed 40 non-infected and 10 infected human bone samples with Staphylococcus epidermidis, collecting reflectance data between 650 cm-1 and 4000 cm-1, with a spectral resolution of 2 cm-1 (Agilent 4300 Handheld) and 0.5 cm-1 (Perkin Elmer Spectrum 100). The acquired spectral information was used for spectral and unsupervised classification, such as a principal component analysis. Both methods yielded significant results when using the recommended settings and data analysis strategies, detecting a loss in bone quality due to the infection. MIR spectroscopy provides a valuable diagnostic tool when there is a tissue shortage and time is of the essence. However, it is essential to conduct further research with larger sample sizes to verify its pros and cons thoroughly.
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Affiliation(s)
- Richard Lindtner
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
| | - Alexander Wurm
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
- Praxis Dr. Med. Univ. Alexander Wurm FA für Orthopädie und Traumatologie, Koflerweg 7, 6275 Stumm, Austria
| | - Katrin Kugel
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
| | - Julia Kühn
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
| | - David Putzer
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
| | - Rohit Arora
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
| | - Débora Cristina Coraça-Huber
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
| | - Philipp Zelger
- University Clinic for Hearing, Voice and Speech Disorders, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria;
| | - Michael Schirmer
- Department of Internal Medicine, Clinic II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria;
| | - Jovan Badzoka
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (J.B.); (C.K.); (C.W.H.)
| | - Christoph Kappacher
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (J.B.); (C.K.); (C.W.H.)
| | - Christian Wolfgang Huck
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (J.B.); (C.K.); (C.W.H.)
| | - Johannes Dominikus Pallua
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (R.L.); (K.K.); (J.K.); (D.P.); (R.A.); (D.C.C.-H.); (J.D.P.)
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17
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Rabeeh VPM, Rahim SA, Kinattingara Parambath S, Rajanikant GK, Hanas T. Iron-Gold Composites for Biodegradable Implants: In Vitro Investigation on Biodegradation and Biomineralization. ACS Biomater Sci Eng 2023; 9:4255-4268. [PMID: 37452568 DOI: 10.1021/acsbiomaterials.3c00513] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
The biocompatibility and biodegradation of iron (Fe) make it a suitable candidate for developing biodegradable metallic implants. However, the degradation rate of Fe in a physiological environment is extremely slow and needs to be enhanced to a rate compatible with tissue growth. Incorporating noble metals improves the Fe degradation rate by forming galvanic couples. This study incorporated gold (Au) into Fe at very low concentrations of 1.25 and 2.37 μg/g to improve the degradation rate. The electrochemical corrosion test of the samples revealed that the Au-containing samples showed a four-time and nine-time faster degradation rate than pure Fe. Furthermore, the immersion test and long-term electrochemical impedance spectroscopy conducted in simulated body fluid (SBF) revealed that the Au-incorporated samples exhibited increased bioactivity and degraded faster than pure Fe. Integrating nanogold into a Fe matrix increased the in situ formation of hydroxyapatite on the sample's surface and did not cause toxicity to L929-murine fibroblast cells. It is suggested that Fe-Au composites with low concentrations of Au can be used to tailor the biodegradation rate and promote the biomineralization of Fe-based implants in the physiological environment.
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Affiliation(s)
- V P Muhammad Rabeeh
- Nanomaterials Research Laboratory, School of Materials Science and Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
| | - Shebeer A Rahim
- Department of Mechanical Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
| | | | - G K Rajanikant
- School of Biotechnology, National Institute of Technology Calicut, Kozhikode 673601, India
| | - T Hanas
- Nanomaterials Research Laboratory, School of Materials Science and Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
- Department of Mechanical Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
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18
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Mandal S, Tannert A, Ebert C, Guliev RR, Ozegowski Y, Carvalho L, Wildemann B, Eiserloh S, Coldewey SM, Löffler B, Bastião Silva L, Hoerr V, Tuchscherr L, Neugebauer U. Insights into S. aureus-Induced Bone Deformation in a Mouse Model of Chronic Osteomyelitis Using Fluorescence and Raman Imaging. Int J Mol Sci 2023; 24:ijms24119762. [PMID: 37298718 DOI: 10.3390/ijms24119762] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 05/25/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Osteomyelitis is an infection of the bone that is often difficult to treat and causes a significant healthcare burden. Staphylococcus aureus is the most common pathogen causing osteomyelitis. Osteomyelitis mouse models have been established to gain further insights into the pathogenesis and host response. Here, we use an established S. aureus hematogenous osteomyelitis mouse model to investigate morphological tissue changes and bacterial localization in chronic osteomyelitis with a focus on the pelvis. X-ray imaging was performed to follow the disease progression. Six weeks post infection, when osteomyelitis had manifested itself with a macroscopically visible bone deformation in the pelvis, we used two orthogonal methods, namely fluorescence imaging and label-free Raman spectroscopy, to characterise tissue changes on a microscopic scale and to localise bacteria in different tissue regions. Hematoxylin and eosin as well as Gram staining were performed as a reference method. We could detect all signs of a chronically florid tissue infection with osseous and soft tissue changes as well as with different inflammatory infiltrate patterns. Large lesions dominated in the investigated tissue samples. Bacteria were found to form abscesses and were distributed in high numbers in the lesion, where they could occasionally also be detected intracellularly. In addition, bacteria were found in lower numbers in surrounding muscle tissue and even in lower numbers in trabecular bone tissue. The Raman spectroscopic imaging revealed a metabolic state of the bacteria with reduced activity in agreement with small cell variants found in other studies. In conclusion, we present novel optical methods to characterise bone infections, including inflammatory host tissue reactions and bacterial adaptation.
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Affiliation(s)
- Shibarjun Mandal
- Leibniz Institute of Photonic Technology (Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research, LPI), 07745 Jena, Germany
| | - Astrid Tannert
- Leibniz Institute of Photonic Technology (Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research, LPI), 07745 Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
| | - Christina Ebert
- Leibniz Institute of Photonic Technology (Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research, LPI), 07745 Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
| | - Rustam R Guliev
- Leibniz Institute of Photonic Technology (Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research, LPI), 07745 Jena, Germany
| | - Yvonne Ozegowski
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
- Institute for Medical Microbiology, Jena University Hospital, 07747 Jena, Germany
| | - Lina Carvalho
- Institute of Anatomical and Molecular Pathology, Faculty of Medicine, University of Coimbra, 3004-504 Coimbra, Portugal
| | - Britt Wildemann
- Experimental Trauma Surgery, Jena University Hospital, 07747 Jena, Germany
| | - Simone Eiserloh
- Leibniz Institute of Photonic Technology (Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research, LPI), 07745 Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
| | - Sina M Coldewey
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
- Department of Anaesthesiology and Intensive Care Medicine, Jena University Hospital, 07747 Jena, Germany
| | - Bettina Löffler
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
- Institute for Medical Microbiology, Jena University Hospital, 07747 Jena, Germany
| | | | - Verena Hoerr
- Institute for Medical Microbiology, Jena University Hospital, 07747 Jena, Germany
- Heart Center Bonn, Department of Internal Medicine II, University Hospital Bonn, 53127 Bonn, Germany
| | - Lorena Tuchscherr
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
- Institute for Medical Microbiology, Jena University Hospital, 07747 Jena, Germany
| | - Ute Neugebauer
- Leibniz Institute of Photonic Technology (Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research, LPI), 07745 Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany
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19
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Xia C, Pu Y, Zhang Q, Hu Q, Wang Y. The feasibility of discriminating BRONJ lesion bone with Raman spectroscopy. Front Endocrinol (Lausanne) 2023; 14:1099889. [PMID: 37223036 PMCID: PMC10202174 DOI: 10.3389/fendo.2023.1099889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 04/20/2023] [Indexed: 05/25/2023] Open
Abstract
Background With the frequent use of Bisphosphonates (BPs), the morbidity of BP-related osteonecrosis of the jaw (BRONJ) is also increasing. However, the prevention and treatment of BRONJ is faced with enormous challenges. This study aimed to illuminate the influence of BP administration in the rat mandible and explore the feasibility of discriminating BRONJ lesion bone with Raman spectroscopy. Materials and methods First, we explored the time- and mode-dependent effects of BP administration on the rat mandible with Raman spectroscopy. Second, the BRONJ rat model was constructed, and the lesion and healthy bone components were analyzed using Raman spectroscopy. Results When only BPs were administered, no rats showed BRONJ symptoms, and no difference could be found in the Raman spectra. However, when combined with local surgery, six (6/8) rats showed BRONJ symptoms. The Raman spectra also showed a significant difference between the lesion and healthy bone. Conclusion In the progression of BRONJ, BPs and local stimulation play an essential role. Both BPs administration and local stimulation need to be controlled to prevent BRONJ. Moreover, BRONJ lesion bone in rats could be discriminated with Raman spectroscopy. This novel method would become a complement in the treatment of BRONJ in the future.
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20
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Olivier F, Drouet C, Marsan O, Sarou-Kanian V, Rekima S, Gautier N, Fayon F, Bonnamy S, Rochet N. Long-Term Fate and Efficacy of a Biomimetic (Sr)-Apatite-Coated Carbon Patch Used for Bone Reconstruction. J Funct Biomater 2023; 14:jfb14050246. [PMID: 37233356 DOI: 10.3390/jfb14050246] [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: 03/17/2023] [Revised: 04/11/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Critical bone defect repair remains a major medical challenge. Developing biocompatible materials with bone-healing ability is a key field of research, and calcium-deficient apatites (CDA) are appealing bioactive candidates. We previously described a method to cover activated carbon cloths (ACC) with CDA or strontium-doped CDA coatings to generate bone patches. Our previous study in rats revealed that apposition of ACC or ACC/CDA patches on cortical bone defects accelerated bone repair in the short term. This study aimed to analyze in the medium term the reconstruction of cortical bone in the presence of ACC/CDA or ACC/10Sr-CDA patches corresponding to 6 at.% of strontium substitution. It also aimed to examine the behavior of these cloths in the medium and long term, in situ and at distance. Our results at day 26 confirm the particular efficacy of strontium-doped patches on bone reconstruction, leading to new thick bone with high bone quality as quantified by Raman microspectroscopy. At 6 months the biocompatibility and complete osteointegration of these carbon cloths and the absence of micrometric carbon debris, either out of the implantation site or within peripheral organs, was confirmed. These results demonstrate that these composite carbon patches are promising biomaterials to accelerate bone reconstruction.
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Affiliation(s)
- Florian Olivier
- CNRS, Université d'Orléans, ICMN UMR 7374, 45071 Orléans, France
| | - Christophe Drouet
- CIRIMAT, Université de Toulouse, CNRS/UT3/INP, 31062 Toulouse, France
| | - Olivier Marsan
- CIRIMAT, Université de Toulouse, CNRS/UT3/INP, 31062 Toulouse, France
| | | | - Samah Rekima
- Université Côte d'Azur, INSERM, CNRS, iBV, 06107 Nice, France
| | - Nadine Gautier
- Université Côte d'Azur, INSERM, CNRS, iBV, 06107 Nice, France
| | - Franck Fayon
- CNRS, Université d'Orléans, CEMHTI UPR 3079, 45071 Orléans, France
| | - Sylvie Bonnamy
- CNRS, Université d'Orléans, ICMN UMR 7374, 45071 Orléans, France
| | - Nathalie Rochet
- Université Côte d'Azur, INSERM, CNRS, iBV, 06107 Nice, France
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21
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Rizzo MG, Palermo N, Alibrandi P, Sciuto EL, Del Gaudio C, Filardi V, Fazio B, Caccamo A, Oddo S, Calabrese G, Conoci S. Physiologic Response Evaluation of Human Foetal Osteoblast Cells within Engineered 3D-Printed Polylactic Acid Scaffolds. BIOLOGY 2023; 12:biology12030424. [PMID: 36979116 PMCID: PMC10044883 DOI: 10.3390/biology12030424] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/12/2023]
Abstract
Large bone defect treatments have always been one of the important challenges in clinical practice and created a huge demand for more efficacious regenerative approaches. The bone tissue engineering (BTE) approach offered a new alternative to conventional bone grafts, addressing all clinical needs. Over the past years, BTE research is focused on the study and realisation of new biomaterials, including 3D-printed supports to improve mechanical, structural and biological properties. Among these, polylactic acid (PLA) scaffolds have been considered the most promising biomaterials due to their good biocompatibility, non-toxic biodegradability and bioresorbability. In this work, we evaluated the physiological response of human foetal osteoblast cells (hFOB), in terms of cell proliferation and osteogenic differentiation, within oxygen plasma treated 3D-printed PLA scaffolds, obtained by fused deposition modelling (FDM). A mechanical simulation to predict their behaviour to traction, flexural or torque solicitations was performed. We found that: 1. hFOB cells adhere and grow on scaffold surfaces; 2. hFOB grown on oxygen plasma treated PLA scaffolds (PLA_PT) show an improvement of cell adhesion and proliferation, compared to not-plasma treated scaffolds (PLA_NT); 3. Over time, hFOB penetrate along strands, differentiate, and form a fibrous matrix, tissue-like; 4. 3D-printed PLA scaffolds have good mechanical behaviour in each analysed configuration. These findings suggest that 3D-printed PLA scaffolds could represent promising biomaterials for medical implantable devices in the orthopaedic field.
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Affiliation(s)
- Maria Giovanna Rizzo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
| | - Nicoletta Palermo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
| | - Paola Alibrandi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
| | - Emanuele Luigi Sciuto
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
| | | | | | - Barbara Fazio
- CNR URT Lab SENS, Beyond NANO, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, Viale F. Stagno D’Alcontres 37, 98158 Messina, Italy
| | - Antonella Caccamo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
| | - Salvatore Oddo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
| | - Giovanna Calabrese
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
- Correspondence: (G.C.); (S.C.)
| | - Sabrina Conoci
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres, 31, 98168 Messina, Italy
- CNR URT Lab SENS, Beyond NANO, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, 40126 Bologna, Italy
- Correspondence: (G.C.); (S.C.)
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22
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Goffin N, Buache E, Charpentier C, Lehrter V, Morjani H, Gobinet C, Piot O. Trajectory Inference for Unraveling Dynamic Biological Processes from Raman Spectral Data. Anal Chem 2023; 95:4395-4403. [PMID: 36788139 DOI: 10.1021/acs.analchem.2c04901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Cell heterogeneity is a crucial parameter for understanding the complexity of numerous biomedical issues. Trajectory inference-based approaches are recent tools developed for single-cell transcriptomics (scRNA-seq) data analysis. They aim to reconstruct evolving pathways from the variety of cell states that coexist simultaneously in a cell population. We propose to expand this concept to Raman spectroscopy, a label-free modality that probes the global molecular nature of a sample, by investigating the dynamics of adipocyte differentiation.
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Affiliation(s)
- Nicolas Goffin
- University of Reims Champagne Ardenne, BioSpecT EA 7506, SFR Santé, France
| | - Emilie Buache
- University of Reims Champagne Ardenne, BioSpecT EA 7506, SFR Santé, France
| | - Celine Charpentier
- University of Reims Champagne Ardenne, BioSpecT EA 7506, SFR Santé, France
| | - Véronique Lehrter
- University of Reims Champagne Ardenne, BioSpecT EA 7506, SFR Santé, France
| | - Hamid Morjani
- University of Reims Champagne Ardenne, BioSpecT EA 7506, SFR Santé, France
| | - Cyril Gobinet
- University of Reims Champagne Ardenne, BioSpecT EA 7506, SFR Santé, France
| | - Olivier Piot
- University of Reims Champagne Ardenne, BioSpecT EA 7506, SFR Santé, France.,University of Reims Champagne Ardenne, Platform of Cellular and Tissular Imaging (PICT) EA 7506, SFR Santé, France
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23
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Dewey MJ, Collins AJ, Tiffany A, Barnhouse VR, Lu C, Kolliopoulos V, Mutreja I, Hickok NJ, Harley BAC. Evaluation of bacterial attachment on mineralized collagen scaffolds and addition of manuka honey to increase mesenchymal stem cell osteogenesis. Biomaterials 2023; 294:122015. [PMID: 36701999 PMCID: PMC9928779 DOI: 10.1016/j.biomaterials.2023.122015] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 01/06/2023] [Accepted: 01/14/2023] [Indexed: 01/21/2023]
Abstract
The design of biomaterials to regenerate bone is likely to increasingly require modifications that reduce bacterial attachment and biofilm formation as infection during wound regeneration can significantly impede tissue repair and typically requires surgical intervention to restart the healing process. Further, much research on infection prevention in bone biomaterials has focused on modeling of non-resorbable metal alloy materials, whereas an expanding direction of bone regeneration has focused on development of bioresorbable materials. This represents a need for the prevention and understanding of infection in resorbable biomaterials. Here, we investigate the ability of a mineralized collagen biomaterial to natively resist infection and examine how the addition of manuka honey, previously identified as an antimicrobial agent, affects gram positive and negative bacterial colonization and mesenchymal stem cell osteogenesis and vasculature formation. We incorporate manuka honey into these scaffolds via either direct fabrication into the scaffold microarchitecture or via soaking the scaffold in a solution of manuka honey after fabrication. Direct incorporation results in a change in the surface characteristics and porosity of mineralized collagen scaffolds. Soaking scaffolds in honey concentrations higher than 10% had significant negative effects on mesenchymal stem cell metabolic activity. Soaking or incorporating 5% honey had no impact on endothelial cell tube formation. Although solutions of 5% honey reduced metabolic activity of mesenchymal stem cells, MSC-seeded scaffolds displayed increased calcium and phosphorous mineral formation, osteoprotegerin release, and alkaline phosphatase activity. Bacteria cultured on mineralized collagen scaffolds demonstrated surfaces covered in bacteria and no method of preventing infection, and using 10 times the minimal inhibitory concentration of antibiotics did not completely kill bacteria within the mineralized collagen scaffolds, indicating bioresorbable scaffold materials may act to shield bacteria from antibiotics. The addition of 5% manuka honey to scaffolds was not sufficient to prevent P. aeruginosa attachment or consistently reduce the activity of methicillin resistant staphylococcus aureus, and concentrations above 7% manuka honey are likely necessary to impact MRSA. Together, our results suggest bioresorbable scaffolds may create an environment conducive to bacterial growth, and potential trade-offs exist for the incorporation of low levels of honey in scaffolds to increase osteogenic potential of osteoprogenitors while high-levels of honey may be sufficient to reduce gram positive or negative bacteria activity but at the cost of reduced osteogenesis.
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Affiliation(s)
- Marley J Dewey
- Dept. of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Alan J Collins
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Aleczandria Tiffany
- Dept. of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Victoria R Barnhouse
- Dept. of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Crislyn Lu
- School of Chemical Sciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Vasiliki Kolliopoulos
- Dept. of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Isha Mutreja
- Department of Restorative Science, Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Noreen J Hickok
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Brendan A C Harley
- Dept. of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA; Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA; Dept. of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA; Dept. of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA; Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.
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24
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Effect of chitosan irrigant solutions on the release of bioactive proteins from root dentin. Clin Oral Investig 2023; 27:691-703. [PMID: 36401068 DOI: 10.1007/s00784-022-04787-1] [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: 04/04/2022] [Accepted: 11/10/2022] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To identify the effect of two chitosan solutions on the release of root dentin matrix proteins and to describe the chemical changes observed following conditioning with chelating agents. MATERIALS AND METHODS The release of dentin sialoprotein (DSP), transforming growth factor-beta 1 (TGF-β1), vascular endothelial growth factor (VEGF), and platelet-derived growth factor-BB (PDGF-BB) with different chelating agents, including ethylenediaminetetraacetic acid (EDTA), chitosan solution (CS), and nanoparticulate chitosan (CSnp), was investigated. DSP was quantified using an enzyme-linked immunosorbent assay (ELISA). TGF-β1, VEGF, and PDGF-BB were quantified using a cytokine bead panel (CBA). Raman spectroscopy was performed to identify surface chemical changes. Statistical analysis was performed using Kruskal-Wallis test with Mann-Whitney-Wilcoxon rank-sum test (p < 0.05). RESULTS TGF-β1, VEGF, and DSP solubilized in all irrigants tested. CSnp showed the highest concentration of DSP. PDGF-BB did not exceed the detection limits. Raman spectroscopy revealed a decrease in the phosphate and carbonate peaks, representing the chelating effect of EDTA, CS, and CSnp. Additionally, CSnp showed the greatest preservation of the amide I and III content. CONCLUSION Proteins can be released from dentin via EDTA, CS, and CSnp conditioning. Raman spectroscopic revealed changes in the inorganic content of the root dentin after chelation. Furthermore, use of CSnp facilitated a preservation of the organic content. CLINICAL RELEVANCE Chelation allows the release of proteins, justifying the use of chelating agents in regenerative endodontics. The chitosan-dentin matrix interaction also promotes the protection of the organic content as an additional benefit to its protein releasing effect.
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25
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Azril, Huang KY, Hobley J, Rouhani M, Liu WL, Jeng YR. A methodology to evaluate different histological preparations of soft tissues: Intervertebral disc tissues study. J Appl Biomater Funct Mater 2023; 21:22808000231155634. [PMID: 36799405 DOI: 10.1177/22808000231155634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
A tissue preparation method will inevitably alter the tissue content. This study aims to evaluate how different common sample preparation methods will affect the tissue morphology, biomechanical properties, and chemical composition of samples. The study focuses on intervertebral disc (IVD) tissue; however, it can be applied to other soft tissues. Raman spectroscopy synchronized with nanoindentation instrumentation was employed to investigate the compositional changes of IVD, specifically, nucleus pulposus (NP) and annulus fibrosus (AF), together with their biomechanical properties of IVD. These properties were examined through the following histological specimen types: fresh cryosection (control), fixed cryosection, and paraffin-embedded. The IVD tissue could be located using an optical microscope under three different preparation methods. Paraffin-embedded samples showed the most explicit details where the lamellae structure of AF could be identified. In terms of biomechanical properties, there was no significant difference between the fresh and fixed cryosection (p > 0.05). In contrast, the fresh cryosection and paraffin-embedded samples showed a significant difference (p < 0.05). It was also found that the tissue preparations affected the chemical content of the tissues and structure of the tissue, which are expected to contribute to biomechanical properties changes. Fresh cryosection and fixed cryosection samples are more promising to work with for biomechanical assessment in histological tissues. The findings fill essential gaps in the literature by providing valuable insight into the characteristics of IVD at the microscale. This study can also become a reference for a better approach to assessing the mechanical properties and chemical content of soft tissues at the microscale.
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Affiliation(s)
- Azril
- Department of Biomedical Engineering, National Cheng Kung University, Tainan City
| | - Kuo-Yuan Huang
- Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, Tainan City
| | - Jonathan Hobley
- Department of Biomedical Engineering, National Cheng Kung University, Tainan City
| | - Mehdi Rouhani
- Department of Biomedical Engineering, National Cheng Kung University, Tainan City
| | - Wen-Lung Liu
- Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, Tainan City
| | - Yeau-Ren Jeng
- Department of Biomedical Engineering, National Cheng Kung University, Tainan City.,Academy of Innovative Semiconductor and Sustainable Manufacturing, National Cheng Kung University, Tainan City.,Medical Device Innovation Center, National Cheng Kung University, Tainan City
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26
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Matveeva I, Bratchenko I, Khristoforova Y, Bratchenko L, Moryatov A, Kozlov S, Kaganov O, Zakharov V. Multivariate Curve Resolution Alternating Least Squares Analysis of In Vivo Skin Raman Spectra. SENSORS (BASEL, SWITZERLAND) 2022; 22:9588. [PMID: 36559957 PMCID: PMC9785721 DOI: 10.3390/s22249588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/02/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
In recent years, Raman spectroscopy has been used to study biological tissues. However, the analysis of experimental Raman spectra is still challenging, since the Raman spectra of most biological tissue components overlap significantly and it is difficult to separate individual components. New methods of analysis are needed that would allow for the decomposition of Raman spectra into components and the evaluation of their contribution. The aim of our work is to study the possibilities of the multivariate curve resolution alternating least squares (MCR-ALS) method for the analysis of skin tissues in vivo. We investigated the Raman spectra of human skin recorded using a portable conventional Raman spectroscopy setup. The MCR-ALS analysis was performed for the Raman spectra of normal skin, keratosis, basal cell carcinoma, malignant melanoma, and pigmented nevus. We obtained spectral profiles corresponding to the contribution of the optical system and skin components: melanin, proteins, lipids, water, etc. The obtained results show that the multivariate curve resolution alternating least squares analysis can provide new information on the biochemical profiles of skin tissues. Such information may be used in medical diagnostics to analyze Raman spectra with a low signal-to-noise ratio, as well as in various fields of science and industry for preprocessing Raman spectra to remove parasitic components.
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Affiliation(s)
- Irina Matveeva
- Department of Laser and Biotechnical Systems, Samara University, Samara 443086, Russia
| | - Ivan Bratchenko
- Department of Laser and Biotechnical Systems, Samara University, Samara 443086, Russia
| | - Yulia Khristoforova
- Department of Laser and Biotechnical Systems, Samara University, Samara 443086, Russia
| | - Lyudmila Bratchenko
- Department of Laser and Biotechnical Systems, Samara University, Samara 443086, Russia
| | - Alexander Moryatov
- Department of Oncology, Samara State Medical University, Samara 443099, Russia
- Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, Samara 443031, Russia
| | - Sergey Kozlov
- Department of Oncology, Samara State Medical University, Samara 443099, Russia
- Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, Samara 443031, Russia
| | - Oleg Kaganov
- Department of Oncology, Samara State Medical University, Samara 443099, Russia
- Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, Samara 443031, Russia
| | - Valery Zakharov
- Department of Laser and Biotechnical Systems, Samara University, Samara 443086, Russia
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LLabre JE, Gil C, Amatya N, Lagalwar S, Possidente B, Vashishth D. Degradation of Bone Quality in a Transgenic Mouse Model of Alzheimer's Disease. J Bone Miner Res 2022; 37:2548-2565. [PMID: 36250342 PMCID: PMC9772191 DOI: 10.1002/jbmr.4723] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 10/03/2022] [Accepted: 10/14/2022] [Indexed: 12/31/2022]
Abstract
Alzheimer's disease (AD) patients present with symptoms such as impairment of insulin signaling, chronic inflammation, and oxidative stress. Furthermore, there are comorbidities associated with AD progression. For example, osteoporosis is common with AD wherein patients exhibit reduced mineralization and a risk for fragility fractures. However, there is a lack of understanding on the effects of AD on bone beyond loss of bone density. To this end, we investigated the effects of AD on bone quality using the 5XFAD transgenic mouse model in which 12-month-old 5XFAD mice showed accumulation of amyloid-beta (Aβ42) compared with wild-type (WT) littermates (n = 10/group; 50% female, 50% male). Here, we observed changes in cortical bone but not in cancellous bone quality. Both bone mass and bone quality, measured in femoral samples using imaging (micro-CT, confocal Raman spectroscopy, X-ray diffraction [XRD]), mechanical (fracture tests), and chemical analyses (biochemical assays), were altered in the 5XFAD mice compared with WT. Micro-CT results showed 5XFAD mice had lower volumetric bone mineral density (BMD) and increased endocortical bone loss. XRD results showed decreased mineralization with smaller mineral crystals. Bone matrix compositional properties, from Raman, showed decreased crystallinity along with higher accumulation of glycoxidation products and glycation products, measured biochemically. 5XFAD mice also demonstrated loss of initiation and maximum toughness. We observed that carboxymethyl-lysine (CML) and mineralization correlated with initiation toughness, whereas crystal size and pentosidine (PEN) correlated with maximum toughness, suggesting bone matrix changes predominated by advanced glycation end products (AGEs) and altered/poor mineral quality explained loss of fracture toughness. Our findings highlight two pathways to skeletal fragility in AD through alteration of bone quality: (i) accumulation of AGEs; and (ii) loss of crystallinity, decreased crystal size, and loss of mineralization. We observed that the accumulation of amyloidosis in brain correlated with an increase in several AGEs, consistent with a mechanistic link between elevated Aβ42 levels in the brain and AGE accumulation in bone. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Joan E. LLabre
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
- Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Cristianel Gil
- Department of Biology, Skidmore College, Saratoga Springs, NY, USA
| | - Neha Amatya
- Department of Biology, Skidmore College, Saratoga Springs, NY, USA
| | - Sarita Lagalwar
- Neuroscience Program, Skidmore College, Saratoga Springs, NY, USA
| | | | - Deepak Vashishth
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
- Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
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Comparison of collagen features of distinct types of caries-affected dentin. J Dent 2022; 127:104310. [PMID: 36167234 DOI: 10.1016/j.jdent.2022.104310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES To compare the biodegradability, mechanical behavior, and physicochemical features of the collagen-rich extracellular matrix (ECM) of artificial caries-affected dentin (ACAD), natural caries-affected dentin (NCAD) and sound dentin (SD). METHODS Dentin specimens from human molars were prepared and assigned into groups according to the type of dentin: ACAD, NCAD, or SD. ACAD was produced by incubation of demineralized SD with Streptococcus mutans in a chemically defined medium (CDM) with 1% sucrose for 7 days at 37 °C under anaerobic conditions. Specimens were assessed to determine collagen birefringence, biodegradability, mechanical behavior, and chemical composition. Data were individually processed and analyzed by ANOVA and post-hoc tests (α = 0.05). RESULTS CDM-based biofilm challenge reduced loss, storage, and complex moduli in ACAD (p < 0.001), while the damping capacity remained unaffected (p = 0.066). Higher red and lower green birefringence were found in ACAD and NCAD when compared with SD (p < 0.001). Differently to ACAD, SD and NCAD presented higher biodegradability to exogenous proteases (p = 0.02). Chemical analysis of the integrated areas of characteristic bands that assess mineral quality (carbonate/phosphate and crystallinity index), mineral to matrix (phosphate/amide I) and post-translational modifications (amide III/CH2, pentosidine/CH2, and pentosidine/amide III) (p<0.05) showed that NCAD was significantly different from SD while ACAD exhibited intermediate values. CONCLUSIONS CDM-based biofilm challenge produced a dentin ECM with decreased mechanical properties and increased collagen maturity. The compositional and structural conformation of the ACAD suggested that CDM-based biofilm challenge showed potential to produce artificial lesions by revealing a transitional condition towards mimicking critical features of NCAD. CLINICAL SIGNIFICANCE This study highlights the importance of developing a tissue that mimics the features of natural caries-affected dentin ECM for in vitro studies. Our findings suggested the potential of a modified biofilm challenge protocol to produce and simulate a relevant substrate, such as caries-affected dentin.
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Wurm A, Kühn J, Kugel K, Putzer D, Arora R, Coraça-Huber DC, Zelger P, Badzoka J, Kappacher C, Huck CW, Pallua JD. Raman microscopic spectroscopy as a diagnostic tool to detect Staphylococcus epidermidis in bone grafts. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121570. [PMID: 35779474 DOI: 10.1016/j.saa.2022.121570] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/02/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
INTRODUCTION Raman microscopic spectroscopyis a new approach for further characterization and detection of molecular features in many pathological processes. This technique has been successfully applied to scrutinize the spatial distribution of small molecules and proteins within biological systems by in situ analysis. This study uses Raman microscopic spectroscopyto identify any in-depth benefits and drawbacks in diagnosing Staphylococcus epidermidis in human bone grafts. MATERIAL AND METHODS 40 non-infected human bone samples and 10 human bone samples infected with Staphylococcus epidermidis were analyzed using Raman microscopic spectroscopy. Reflectance data were collected between 200 cm-1 and 3600 cm-1 with a spectral resolution of 4 cm-1 using a Senterra II microscope (Bruker, Ettlingen, Germany). The acquired spectral information was used for spectral and unsupervised classification, such as principal component analysis. RESULTS Raman measurements produced distinct diagnostic spectra that were used to distinguish between non-infected human bone samples and Staphylococcus epidermidis infected human bone samples by spectral and principal component analyses. A substantial loss in bone quality and protein conformation was detected by human bone samples co-cultured with Staphylococcus epidermidis. The mineral-to-matrix ratio using the phosphate/Amide I ratio (p = 0.030) and carbonate/phosphate ratio (p = 0.001) indicates that the loss of relative mineral content in bones upon bacterial infection is higher than in non-infected human bones. Also, an increase of alterations in the collagen network (p = 0.048) and a decrease in the structural organization and relative collagen in infected human bone could be detected. Subsequent principal component analyses identified Staphylococcus epidermidis in different spectral regions, respectively, originating mainly from CH2 deformation (wagging) of protein (at 1450 cm-1) and bending and stretching modes of C-H groups (∼2800-3000 cm-1). CONCLUSION Raman microscopic spectroscopyis presented as a promising diagnostic tool to detect Staphylococcus epidermidis in human bone grafts. Further studies in human tissues are warranted.
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Affiliation(s)
- A Wurm
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - J Kühn
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - K Kugel
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - D Putzer
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - R Arora
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - D C Coraça-Huber
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - P Zelger
- University Clinic for Hearing, Voice and Speech Disorders, Medical University of Innsbruck, Anichstrasse 35, Innsbruck, Austria
| | - J Badzoka
- Institute of Analytical Chemistry and Radiochemistry, Innsbruck, Austria
| | - C Kappacher
- Institute of Analytical Chemistry and Radiochemistry, Innsbruck, Austria
| | - C W Huck
- Institute of Analytical Chemistry and Radiochemistry, Innsbruck, Austria
| | - J D Pallua
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria.
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Ferreira MKM, Souza-Monteiro D, Bittencourt LO, Matos-Sousa JM, Chemelo VS, Santos VRN, Nunes PBO, Balbinot GDS, Prado AF, Collares FM, Ager FJ, Ortega-Feliu I, Respaldiza MA, Pessanha S, Lima RR. Fluoride exposure duringintrauterine and lactation periods promotes changes in the offspring rats' alveolar bone. CHEMOSPHERE 2022; 307:136053. [PMID: 35977563 DOI: 10.1016/j.chemosphere.2022.136053] [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: 05/01/2022] [Revised: 06/27/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
The importance of fluoride (F) for oral health is well established in the literature. However, evidence suggests that excessive exposure to this mineral is associated with adverse effects at different life stages and may affect many biological systems, especially mineralized tissues. The purpose of this study was to investigate the effects of F exposure during pregnancy and breastfeeding on the alveolar bone of the offspring since the alveolar bone is one of the supporting components of the dental elements. For this, the progeny rats were divided into three groups: control, 10 mg F/L, and 50 mg F/L for 42 (gestational and lactation periods). Analysis of the quantification of F levels in the alveolar bone by particle-induced gamma emission; Raman spectroscopy to investigate the physicochemical aspects and mineral components; computed microtomography to evaluate the alveolar bone microstructure and analyses were performed to evaluate osteocyte density and collagen quantification using polarized light microscopy. The results showed an increase in F levels in the alveolar bone, promoted changes in the chemical components in the bone of the 50 mg F/L animals (p < 0.001), and had repercussions on the microstructure of the alveolar bone, evidenced in the 10 mg F/L and 50 mg F/L groups (p < 0.001). Furthermore, F was able to modulate the content of organic bone matrix, mainly collagen; thus, this damage possibly reduced the amount of bone tissue and consequently increased the root exposure area of the exposed groups in comparison to a control group (p < 0.001). Our findings reveal that Fcan modulate the physicochemical and microstructural dimensions and reduction of alveolar bone height, increasing the exposed root region of the offspring during the prenatal and postnatal period. These findings suggest that F can modulate alveolar bone mechanical strength and force dissipation functionality.
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Affiliation(s)
- Maria Karolina Martins Ferreira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Deiweson Souza-Monteiro
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Leonardo Oliveira Bittencourt
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - José Mário Matos-Sousa
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Victória Santos Chemelo
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Vinicius Ruan Neves Santos
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Paula Beatriz Oliveira Nunes
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Gabriela de Souza Balbinot
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Alejandro Ferraz Prado
- Cardiovascular System Pharmacology and Toxicology Laboratory, Institute of Biological Sciences, Federal University of Pará, Belem, Brazil
| | - Fabricio Mezzomo Collares
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Francisco José Ager
- National Accelerator Center (CNA), Cartuja Science and Technology Park, Calle Thomas Alva Edison 7 Sevilla, 41092, Sevilla, Spain
| | - Inés Ortega-Feliu
- National Accelerator Center (CNA), Cartuja Science and Technology Park, Calle Thomas Alva Edison 7 Sevilla, 41092, Sevilla, Spain
| | - Miguel Angel Respaldiza
- National Accelerator Center (CNA), Cartuja Science and Technology Park, Calle Thomas Alva Edison 7 Sevilla, 41092, Sevilla, Spain
| | - Sofia Pessanha
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics, NOVA School of Sciences and Technology, Campus Caparica, 2829-516, Caparica, Portugal
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil.
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Bovine and human endometrium-derived hydrogels support organoid culture from healthy and cancerous tissues. Proc Natl Acad Sci U S A 2022; 119:e2208040119. [PMID: 36279452 PMCID: PMC9636948 DOI: 10.1073/pnas.2208040119] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Organoid technology has provided unique insights into human organ development, function, and diseases. Patient-derived organoids are increasingly used for drug screening, modeling rare disorders, designing regenerative therapies, and understanding disease pathogenesis. However, the use of Matrigel to grow organoids represents a major challenge in the clinical translation of organoid technology. Matrigel is a poorly defined mixture of extracellular matrix proteins and growth factors extracted from the Engelbreth–Holm–Swarm mouse tumor. The extracellular matrix is a major driver of multiple cellular processes and differs significantly between tissues as well as in healthy and disease states of the same tissue. Therefore, we envisioned that the extracellular matrix derived from a native healthy tissue would be able to support organoid growth akin to organogenesis in vivo. Here, we have developed hydrogels from decellularized human and bovine endometrium. These hydrogels supported the growth of mouse and human endometrial organoids, which was comparable to Matrigel. Organoids grown in endometrial hydrogels were proteomically more similar to the native tissue than those cultured in Matrigel. Proteomic and Raman microspectroscopy analyses showed that the method of decellularization affects the biochemical composition of hydrogels and, subsequently, their ability to support organoid growth. The amount of laminin in hydrogels correlated with the number and shape of organoids. We also demonstrated the utility of endometrial hydrogels in developing solid scaffolds for supporting high-throughput, cell culture–based applications. In summary, endometrial hydrogels overcome a major limitation of organoid technology and greatly expand the applicability of organoids to understand endometrial biology and associated pathologies.
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Chen J, Wang X, Li J, Zhang H, Li Y, Deng P, Feng W, Qi X, Ye P, Li J, Zeng J, Zeng Y, Li J, Xie S. Research Status and Hotspots of Chronic Osteomyelitis: A Bibliometric and Visualized Analysis. Orthop Surg 2022; 14:3378-3389. [PMID: 36266919 PMCID: PMC9732618 DOI: 10.1111/os.13512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 07/26/2022] [Accepted: 08/23/2022] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The treatment of chronic osteomyelitis (COM) is extremely challenging for physicians and patients. It is of great significance to explore the research status, development trend and future research hotspots in the field of COM to promote the development of this field. This study is aimed to explore the global research status of COM and predict its future research hotspots based on bibliometric and visualized analysis. METHODS Web of Science core collection database was used to search the related literature of COM from 1994 to 2020. All data were imported into Microsoft Excel 2019 for collation. Additionally, the literature quality of countries, authors, journals, and institutions is evaluated. The VOS viewer software was used for conducting co-analysis, co-citation analysis, and keyword co-occurrence analysis of literature to analyze the global status and predict the future hotspots of the COM field. RESULTS A total of 726 articles were retrieved in this study. The number of global publications shows a trend of wave growth, but the increase is not significant. It is expected that the number of COM articles will remain at more than 50 per year in the next decade. The COM literature published in the United States (Publications = 160, H index = 37, average citations per item = 28.63) is of the highest quality. Girschick HJ (Publications = 16, H index = 14, average citations per item = 52.25) is the most contributed scholar in the field of COM. UNIV IOWA (Publications = 15, H index = 11, average citations per item = 57.27) and UNIV WURZBURG (Publications = 18, H index = 15, average citations per item = 47.5) are influential institutions in the field of COM. The results of co-occurrence analysis show that the field of COM can be roughly divided into the following five modules: COM surgical research, COM basic research, COM diagnosis-related research, chronic recurrent multifocal osteomyelitis (CRMO)-related research, risk factors of COM. Risk factors of COM are the module with the highest concentration of hot words. CONCLUSION COM-related research will continue to develop further in the next decade. The diagnosis research and risk factors of COM are the most popular research modules in recent years. Some controversial or troubled issues including the efficacy of perforator flap and fascia flap covering soft tissue, searching exclusive detection methods for the diagnosis of COM and bisphosphonates and biological agents in the treatment of CRMO may lead to the development of the COM field.
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Affiliation(s)
- Jinlun Chen
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina,The First Clinical Medical CollegeGuangzhou University of Chinese MedicineGuangzhouChina
| | - Xingyu Wang
- The First Department of OrthopedicsJiangxi Province Hospital of Integrated Chinese and Western MedicineNanchangChina
| | - Jin Li
- The Fourth Clinical Medical CollegeGuangzhou University of Chinese MedicineShenzhenChina
| | - Haitao Zhang
- The First Clinical Medical CollegeGuangzhou University of Chinese MedicineGuangzhouChina
| | - Yijin Li
- The First Clinical Medical CollegeGuangzhou University of Chinese MedicineGuangzhouChina
| | - Peng Deng
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina
| | - Wenjun Feng
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina
| | - Xinyu Qi
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina
| | - Pengcheng Ye
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina
| | - Jiahao Li
- The First Clinical Medical CollegeGuangzhou University of Chinese MedicineGuangzhouChina
| | - Jianchun Zeng
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina
| | - Yirong Zeng
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina
| | - Jie Li
- The Three Department of OrthopedicsThe First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina
| | - Shuihua Xie
- The First Department of OrthopedicsJiangxi Province Hospital of Integrated Chinese and Western MedicineNanchangChina
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Tiffany AS, Harley BA. Growing Pains: The Need for Engineered Platforms to Study Growth Plate Biology. Adv Healthc Mater 2022; 11:e2200471. [PMID: 35905390 PMCID: PMC9547842 DOI: 10.1002/adhm.202200471] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 07/11/2022] [Indexed: 01/27/2023]
Abstract
Growth plates, or physis, are highly specialized cartilage tissues responsible for longitudinal bone growth in children and adolescents. Chondrocytes that reside in growth plates are organized into three distinct zones essential for proper function. Modeling key features of growth plates may provide an avenue to develop advanced tissue engineering strategies and perspectives for cartilage and bone regenerative medicine applications and a platform to study processes linked to disease progression. In this review, a brief introduction of the growth plates and their role in skeletal development is first provided. Injuries and diseases of the growth plates as well as physiological and pathological mechanisms associated with remodeling and disease progression are discussed. Growth plate biology, namely, its architecture and extracellular matrix organization, resident cell types, and growth factor signaling are then focused. Next, opportunities and challenges for developing 3D biomaterial models to study aspects of growth plate biology and disease in vitro are discussed. Finally, opportunities for increasingly sophisticated in vitro biomaterial models of the growth plate to study spatiotemporal aspects of growth plate remodeling, to investigate multicellular signaling underlying growth plate biology, and to develop platforms that address key roadblocks to in vivo musculoskeletal tissue engineering applications are described.
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Affiliation(s)
- Aleczandria S. Tiffany
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Brendan A.C. Harley
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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Jurašeková Z, Fabriciová G, Silveira LF, Lee YN, Gutak JM, Ataabadi MM, Kundrát M. Raman Spectra and Ancient Life: Vibrational ID Profiles of Fossilized (Bone) Tissues. Int J Mol Sci 2022; 23:10689. [PMID: 36142598 PMCID: PMC9502200 DOI: 10.3390/ijms231810689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/11/2022] [Accepted: 09/12/2022] [Indexed: 11/17/2022] Open
Abstract
Raman micro-spectroscopy is a non-destructive and non-contact analytical technique that combines microscopy and spectroscopy, thus providing a potential for non-invasive and in situ molecular identification, even over heterogeneous and rare samples such as fossilized tissues. Recently, chemical imaging techniques have become an increasingly popular tool for characterizing trace elements, isotopic information, and organic markers in fossils. Raman spectroscopy also shows a growing potential in understanding bone microstructure, chemical composition, and mineral assemblance affected by diagenetic processes. In our lab, we have investigated a wide range of different fossil tissues, mainly of Mesozoic vertebrates (from Jurassic through Cretaceous). Besides standard spectra of sedimentary rocks, including pigment contamination, our Raman spectra also exhibit interesting spectral features in the 1200-1800 cm-1 spectral range, where Raman bands of proteins, nucleic acids, and other organic molecules can be identified. In the present study, we discuss both a possible origin of the observed bands of ancient organic residues and difficulties with definition of the specific spectral markers in fossilized soft and hard tissues.
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Affiliation(s)
- Zuzana Jurašeková
- Department of Biophysics, Faculty of Science, Pavol Jozef Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia
| | - Gabriela Fabriciová
- Department of Biophysics, Faculty of Science, Pavol Jozef Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia
| | - Luis F. Silveira
- Museu de Zoologia da Universidade de São Paulo, Caixa Postal 42.494, São Paulo 04218-970, Brazil
| | - Yuong-Nam Lee
- School of Earth and Environmental Sciences, Seoul National University, Seoul 08826, Korea
| | - Jaroslav M. Gutak
- Department of Geology, Geodesy, and Life Security, Institute of Mining and Geosystems, Siberian State Industrial University, Kirov Street 42, 654007 Novokuznetsk, Russia
| | - Majid Mirzaie Ataabadi
- Department of Geology, Faculty of Science, University of Zanjan, Zanjan 4537138791, Iran
| | - Martin Kundrát
- PaleoBioImaging Lab, Evolutionary Biodiversity Research Group, Center for Interdisciplinary Biosciences, Technology and Innovation Park, Pavol Jozef Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia
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Tisler CE, Moldovan M, Petean I, Buduru SD, Prodan D, Sarosi C, Leucuţa DC, Chifor R, Badea ME, Ene R. Human Enamel Fluorination Enhancement by Photodynamic Laser Treatment. Polymers (Basel) 2022; 14:polym14142969. [PMID: 35890745 PMCID: PMC9325182 DOI: 10.3390/polym14142969] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/11/2022] [Accepted: 07/16/2022] [Indexed: 02/06/2023] Open
Abstract
Poor oral hygiene leads to serious damages of theteeth’s surface enamel such as micro-abrasions and acid erosion. These alterations combined with bacterial plaque result in cavity appearance. Prophylactic measures include various techniques for enamel surface restoration. Fluorination is one of the most important treatments for this purpose. Therefore, in the present research, we investigated the classical fluorination treatment compared with laser photodynamic fluorination performed on human enamel samples with poor surface quality. Three sample groups were investigated: veneer (F), inlay (I), and crowns (C). The general morphologic aspect was investigated by scanning electron microscopy (SEM), and the specific details such as the fine microstructure and nanostructure were investigated by atomic force microscopy (AFM) of the surface roughness. The samples were also investigated by Fourier transformed infrared attenuated total reflectance (FTIR-ATR) to evidence the fluorination effect on the enamel surface. Results showed that all initial samples had an altered state with micro-abrasions and erosion with mineral loss, which increase the surface roughness. The F group was the most damaged, having a higher roughness, and the I group was less damaged. Classic fluorination treatment partially restored the enamel by local re-mineralization, but did not obtain the parameters of healthy enamel. However, a significant decrease of the roughness was observed (statistical relevance p = 0.001 with the Breusch–Pagan Test). This fact was supported by the presence of newly formed fluorides in the FTIR-ATR spectra. The photodynamic laser fluorination restores the enamel in an enhanced manner by a strong re-mineralization, which implies a significant roughness value decrease comparable to healthy enamel. The Breusch–Pagan Test confirmed the relevance with p = 0.001. This is due to an extended re-mineralization abundant in fluoride crystals as observed by AFM and FTIR. Statistical p-values regarding laser application were in the range of 0.02–0.06, supporting its relevance in the fluorination effect. The final conclusion is that the photodynamic effect is able to favor the newly formed fluoride deposition onto the affected sites of the enamel surface.
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Affiliation(s)
- Corina Elena Tisler
- Department of Prosthetic Dentistry and Dental Materials, “Iuliu Hatieganu” University of Medicine and Pharmacy, 32 Clinicilor Street, 400006 Cluj-Napoca, Romania; (C.E.T.); (S.D.B.)
| | - Marioara Moldovan
- Department of Polymer Composites, Institute of Chemistry “Raluca Ripan”, University Babes-Bolyai, 30 Fantanele Street, 400294 Cluj-Napoca, Romania; (M.M.); (D.P.); (C.S.)
| | - Ioan Petean
- Faculty of Chemistry and Chemical Engineering, University Babes-Bolyai, 11 Arany János Street, 400028 Cluj-Napoca, Romania
- Correspondence:
| | - Smaranda Dana Buduru
- Department of Prosthetic Dentistry and Dental Materials, “Iuliu Hatieganu” University of Medicine and Pharmacy, 32 Clinicilor Street, 400006 Cluj-Napoca, Romania; (C.E.T.); (S.D.B.)
| | - Doina Prodan
- Department of Polymer Composites, Institute of Chemistry “Raluca Ripan”, University Babes-Bolyai, 30 Fantanele Street, 400294 Cluj-Napoca, Romania; (M.M.); (D.P.); (C.S.)
| | - Codruta Sarosi
- Department of Polymer Composites, Institute of Chemistry “Raluca Ripan”, University Babes-Bolyai, 30 Fantanele Street, 400294 Cluj-Napoca, Romania; (M.M.); (D.P.); (C.S.)
| | - Daniel-Corneliu Leucuţa
- Department of Medical Informatics and Biostatistics, “Iuliu Hatieganu” University of Medicine and Pharmacy, 6 Pasteur Street, 400012 Cluj-Napoca, Romania;
| | - Radu Chifor
- Department of Preventive Dental Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Avram Iancu 31, 400083 Cluj-Napoca, Romania; (R.C.); (M.E.B.)
| | - Mîndra Eugenia Badea
- Department of Preventive Dental Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Avram Iancu 31, 400083 Cluj-Napoca, Romania; (R.C.); (M.E.B.)
| | - Razvan Ene
- 14 Department, Orthopedics, Anesthesia and Intensive Care, University of Medicine and Pharmacy Carol Davila, 37 Dionisie Lupu Street, 020021 Bucharest, Romania;
- Orthopaedics and Traumatology Department, Bucharest Emergency University Hospital, 169 Splaiul Independenței Street, 050098 Bucharest, Romania
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Jang JH, Kim HJ, Choi JY, Kim HW, Choi S, Kim S, Bang A, Kim DS. Effect of Dentin Desensitizer Containing Novel Bioactive Glass on the Permeability of Dentin. MATERIALS 2022; 15:ma15124041. [PMID: 35744100 PMCID: PMC9227448 DOI: 10.3390/ma15124041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/04/2022] [Accepted: 06/05/2022] [Indexed: 11/16/2022]
Abstract
The objective of this study was to evaluate the effect of novel bioactive glass (BAG)-containing desensitizers on the permeability of dentin. Experimental dentin desensitizers containing 3 wt% BAG with or without acidic functional monomers (10-MDP or 4-META) were prepared. A commercial desensitizer, Seal & Protect (SNP), was used as a control. To evaluate the permeability of dentin, real-time dentinal fluid flow (DFF) rates were measured at four different time points (demineralized, immediately after desensitizer application, after two weeks in simulated body fluid (SBF), and post-ultrasonication). The DFF reduction rate (ΔDFF) was also calculated. The surface changes were analyzed using field emission scanning electron microscopy (FE-SEM). Raman spectroscopy was performed to analyze chemical changes on the dentin surface. The ΔDFF of the desensitizers containing BAG, BAG with 10-MDP, and BAG with 4-META significantly increased after two weeks of SBF storage and post-ultrasonication compared to the SNP at each time point (p < 0.05). Multiple precipitates were observed on the surfaces of the three BAG-containing desensitizers. Raman spectroscopy revealed hydroxyapatite (HAp) peaks on the dentin surfaces treated with the three BAG-containing desensitizers. Novel BAG-containing dentin desensitizers can reduce the DFF rate about 70.84 to 77.09% in the aspect of reduction of DFF through the HAp precipitations after two weeks of SBF storage.
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Affiliation(s)
- Ji-Hyun Jang
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea;
| | - Hyun-Jung Kim
- Department of Conservative Dentistry, Kyung Hee University Dental Hospital, Seoul 02453, Korea;
| | - Joo-Young Choi
- Department of Conservative Dentistry, Graduate School, Kyung Hee University, Seoul 02453, Korea;
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Korea;
| | - Samjin Choi
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Soogeun Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Ayoung Bang
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Duck-Su Kim
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea;
- Correspondence: ; Tel.: +82-2-958-9330; Fax: +82-2-960-5108
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Rebrosova K, Samek O, Kizovsky M, Bernatova S, Hola V, Ruzicka F. Raman Spectroscopy-A Novel Method for Identification and Characterization of Microbes on a Single-Cell Level in Clinical Settings. Front Cell Infect Microbiol 2022; 12:866463. [PMID: 35531343 PMCID: PMC9072635 DOI: 10.3389/fcimb.2022.866463] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/07/2022] [Indexed: 12/02/2022] Open
Abstract
Rapid and accurate identification of pathogens causing infections is one of the biggest challenges in medicine. Timely identification of causative agents and their antimicrobial resistance profile can significantly improve the management of infection, lower costs for healthcare, mitigate ever-growing antimicrobial resistance and in many cases, save lives. Raman spectroscopy was shown to be a useful-quick, non-invasive, and non-destructive -tool for identifying microbes from solid and liquid media. Modifications of Raman spectroscopy and/or pretreatment of samples allow single-cell analyses and identification of microbes from various samples. It was shown that those non-culture-based approaches could also detect antimicrobial resistance. Moreover, recent studies suggest that a combination of Raman spectroscopy with optical tweezers has the potential to identify microbes directly from human body fluids. This review aims to summarize recent advances in non-culture-based approaches of identification of microbes and their virulence factors, including antimicrobial resistance, using methods based on Raman spectroscopy in the context of possible use in the future point-of-care diagnostic process.
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Affiliation(s)
- Katarina Rebrosova
- Department of Microbiology, Faculty of Medicine of Masaryk University and St. Anne’s University Hospital, Brno, Czechia
| | - Ota Samek
- Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czechia
| | - Martin Kizovsky
- Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czechia
| | - Silvie Bernatova
- Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czechia
| | - Veronika Hola
- Department of Microbiology, Faculty of Medicine of Masaryk University and St. Anne’s University Hospital, Brno, Czechia
| | - Filip Ruzicka
- Department of Microbiology, Faculty of Medicine of Masaryk University and St. Anne’s University Hospital, Brno, Czechia
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Fung AA, Hoang K, Zha H, Chen D, Zhang W, Shi L. Imaging Sub-Cellular Methionine and Insulin Interplay in Triple Negative Breast Cancer Lipid Droplet Metabolism. Front Oncol 2022; 12:858017. [PMID: 35359364 PMCID: PMC8960266 DOI: 10.3389/fonc.2022.858017] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/14/2022] [Indexed: 11/29/2022] Open
Abstract
Triple negative breast cancer (TNBC) is a particularly aggressive cancer subtype that is difficult to diagnose due to its discriminating epidemiology and obscure metabolome. For the first time, 3D spatial and chemometric analyses uncover the unique lipid metabolome of TNBC under the tandem modulation of two key metabolites - insulin and methionine - using non-invasive optical techniques. By conjugating heavy water (D2O) probed Raman scattering with label-free two-photon fluorescence (TPF) microscopy, we observed altered de novo lipogenesis, 3D lipid droplet morphology, and lipid peroxidation under various methionine and insulin concentrations. Quantitative interrogation of both spatial and chemometric lipid metabolism under tandem metabolite modulation confirms significant interaction of insulin and methionine, which may prove to be critical therapeutic targets, and proposes a powerful optical imaging platform with subcellular resolution for metabolic and cancer research.
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Affiliation(s)
- Anthony A Fung
- Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Khang Hoang
- Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Honghao Zha
- Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Derek Chen
- Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Wenxu Zhang
- Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Lingyan Shi
- Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
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Shin KS, Men S, Wong A, Cobb-Bruno C, Chen EY, Fu D. Quantitative Chemical Imaging of Bone Tissue for Intraoperative and Diagnostic Applications. Anal Chem 2022; 94:3791-3799. [PMID: 35188370 PMCID: PMC8944199 DOI: 10.1021/acs.analchem.1c04354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bone is difficult to image using traditional histopathological methods, leading to challenges in intraoperative pathological evaluation that is critical in guiding surgical treatment, particularly in orthopedic oncology. In this study, we demonstrate that a multimodal quantitative imaging approach that combines stimulated Raman scattering (SRS) microscopy, two-photon fluorescence (TPF) microscopy, and second-harmonic generation (SHG) microscopy can provide useful diagnostic information regarding intact bone tissue fragments from surgical excision or biopsy specimens. We imaged bone samples from 17 patient cases and performed quantitative chemical and morphological analyses of both mineral and organic components of bone. Our main findings show that carbonate content combined with morphometric analysis of bone organic matrix can separate several major classes of bone cancer-associated diagnostic categories with an average accuracy of 92%. This proof-of-principle study demonstrates that quantitative multimodal imaging and machine learning-based analysis of bony tissue can provide crucial diagnostic information for guiding clinical decisions in orthopedic oncology. Moreover, the general methodology of morphological and chemical imaging combined with machine learning can be readily extended to other tissue types for tissue diagnosis in intraoperative and other clinical settings.
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Affiliation(s)
- Kseniya S Shin
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.,School of Medicine, University of Washington, Seattle, Washington 98195, United States
| | - Shuaiqian Men
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Angel Wong
- Department of Bioengineering, University of Washington, Seattle, Washington 98195, United States
| | - Colburn Cobb-Bruno
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Eleanor Y Chen
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington 98195, United States
| | - Dan Fu
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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Abdali Z, Renner-Rao M, Chow A, Cai A, Harrington MJ, Dorval Courchesne NM. Extracellular Secretion and Simple Purification of Bacterial Collagen from Escherichia coli. Biomacromolecules 2022; 23:1557-1568. [PMID: 35258298 DOI: 10.1021/acs.biomac.1c01191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Because of structural similarities with type-I animal collagen, recombinant bacterial collagen-like proteins have been progressively used as a source of collagen for biomaterial applications. However, the intracellular expression combined with current costly and time-consuming chromatography methods for purification makes the large-scale production of recombinant bacterial collagen challenging. Here, we report the use of an adapted secretion pathway, used natively byEscherichia colito secrete curli fibers, for extracellular secretion of the bacterial collagen. We confirmed that a considerable fraction of expressed collagen (∼70%) is being secreted freely into the extracellular medium, with an initial purity of ∼50% in the crude culture supernatant. To simplify the purification of extracellular collagen, we avoided cell lysis and used cross-flow filtration or acid precipitation to concentrate the voluminous supernatant and separate the collagen from impurities. We confirmed that the secreted collagen forms triple helical structures, using Sirius Red staining and circular dichroism. We also detected collagen biomarkers via Raman spectroscopy, further supporting that the recombinant collagen forms a stable triple helical conformation. We further studied the effect of the isolation methods on the morphology and secondary structure, concluding that the final collagen structure is process-dependent. Overall, we show that the curli secretion system can be adapted for extracellular secretion of the bacterial collagen, eliminating the need for cell lysis, which simplifies the collagen isolation process and enables a simple cost-effective method with potential for scale-up.
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Affiliation(s)
- Zahra Abdali
- Department of Chemical Engineering, McGill University, Montreal H3A 0C5, Quebec, Canada
| | - Max Renner-Rao
- Department of Chemistry, McGill University, Montreal H3A 0C5, Quebec, Canada
| | - Amy Chow
- Department of Chemical Engineering, McGill University, Montreal H3A 0C5, Quebec, Canada
| | - Anqi Cai
- Department of Chemical Engineering, McGill University, Montreal H3A 0C5, Quebec, Canada
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Reis M, Alania Y, Leme-Kraus A, Free R, Joester D, Ma W, Irving T, Bedran-Russo AK. The stoic tooth root: how the mineral and extracellular matrix counterbalance to keep aged dentin stable. Acta Biomater 2022; 138:351-360. [PMID: 34740855 PMCID: PMC8815755 DOI: 10.1016/j.actbio.2021.10.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 01/17/2023]
Abstract
Aging is a physiological process with profound impact on the biology and function of biosystems, including the human dentition. While resilient, human teeth undergo wear and disease, affecting overall physical, psychological, and social human health. However, the underlying mechanisms of tooth aging remain largely unknown. Root dentin is integral to tooth function in that it anchors and dissipates mechanical load stresses of the tooth-bone system. Here, we assess the viscoelastic behavior, composition, and ultrastructure of young and old root dentin using nano-dynamic mechanical analysis, micro-Raman spectroscopy, small angle X-ray scattering, atomic force and transmission electron microscopies. We find that the root dentin overall stiffness increases with age. Unlike other mineralized tissues and even coronal dentin, however, the ability of root dentin to dissipate energy during deformation does not decay with age. Using a deconstruction method to dissect the contribution of mineral and organic matrix, we find that the damping factor of the organic matrix does deteriorate. Compositional and ultrastructural analyses revealed higher mineral-to-matrix ratio, altered enzymatic and non-enzymatic collagen cross-linking, increased collagen d-spacing and fibril diameter, and decreased abundance of proteoglycans and sulfation pattern of glycosaminoglycans . Therefore, even in the absence of remodeling, the extracellular matrix of root dentin shares traits of aging with other tissues. To explain this discrepancy, we propose that altered matrix-mineral interactions, possibly mediated by carbonate ions sequestered at the mineral interface and/or altered glycosaminoglycans counteract the deleterious effects of aging on the structural components of the extracellular matrix. STATEMENT OF SIGNIFICANCE: Globally, a quarter of the population will be over 65 years old by 2050. Because many will retain their dentition, it will become increasingly important to understand and manage how aging affects teeth. Dentin is integral to the protective, biomechanical, and regenerative features of teeth. Here, we demonstrate that older root dentin not only has altered mechanical properties, but shows characteristic shifts in mineralization, composition, and post-translational modifications of the matrix. This strongly suggests that there is a mechanistic link between mineral and matrix components to the biomechanical performance of aging dentin with implications for efforts to slow or even reverse the aging process.
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Affiliation(s)
- Mariana Reis
- Department of General Dental Sciences, Marquette University, Milwaukee, WI, USA,Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Yvette Alania
- Department of General Dental Sciences, Marquette University, Milwaukee, WI, USA,Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Ariene Leme-Kraus
- Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Robert Free
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Derk Joester
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Weikang Ma
- Department of Biological Sciences, Illinois Institute of Technology. Chicago, IL, USA
| | - Thomas Irving
- Department of Biological Sciences, Illinois Institute of Technology. Chicago, IL, USA
| | - Ana K. Bedran-Russo
- Department of General Dental Sciences, Marquette University, Milwaukee, WI, USA,Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, IL, USA
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Al Ghaithi A, Al Bimani A, Al Maskari S. Investigating the Growth of Pseudomonas aeruginosa and Its Influence on Osteolysis in Human Bone: An In Vitro Study. Strategies Trauma Limb Reconstr 2022; 16:127-131. [PMID: 35111250 PMCID: PMC8778729 DOI: 10.5005/jp-journals-10080-1534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Isolation of the causal microorganisms in osteomyelitis presents a major challenge for treating clinicians. Several methods have been proposed to rapidly and accurately identify microorganisms. There has been an increasing interest in using Raman spectroscopy in the field of microbial detection and characterisation. This paper explores the use of Raman spectroscopy identification as one of the most difficult-to-isolate microorganisms causing osteomyelitis. Methods and results Fresh healthy human bone samples were collected from patients undergoing a total knee replacement. These samples were then inoculated with fresh overnight Pseudomonas aeruginosa (PAO) cultures. Bacteria growth and bone ultrastructural changes were monitored over a period of 6 weeks. The experiment demonstrated ultrastructural bony destruction caused by osteolytic PAO secretions. Raman-specific spectral signatures related to the cellular membranes of PAO structures were spotted indicating survival of bacteria on the bone surface. Conclusion This study showed the promising ability of Raman spectroscopy to identify the presence of bacteria on the surface of inoculated bone samples over time. It was able to detect the osteolytic activity of the bacteria as well as ultrastructure specific to PAO virulence. This method may have a role as an aid to existing diagnostic methods for fast and accurate bacterial identification in bone infection. How to cite this article Al Ghaithi A, Al Bimani A, Al Maskari S. Investigating the Growth of Pseudomonas aeruginosa and Its Influence on Osteolysis in Human Bone: An In Vitro Study. Strategies Trauma Limb Reconstr 2021;16(3):127–131.
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Affiliation(s)
- Ahmed Al Ghaithi
- Orthopaedic Surgery Division, College of Medicine, Sultan Qaboos University, Muscat, Oman
- Ahmed Al Ghaithi, Orthopaedic Surgery Division, College of Medicine, Sultan Qaboos University, Muscat, Oman, Phone: +96899166911, e-mail:
| | - Atika Al Bimani
- Department of Microbiology, College of Medicine, Sultan Qaboos University, Muscat, Oman
| | - Sultan Al Maskari
- Orthopaedic Surgery Division, College of Medicine, Sultan Qaboos University, Muscat, Oman
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43
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Vibrational Imaging Techniques for the Characterization of Hard Dental Tissues: From Bench-Top to Chair-Side. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112411953] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Currently, various analytical techniques, including scanning electron microscopy, X-Ray diffraction, microcomputed tomography, and energy dispersive X-ray spectroscopy, are available to study the structural or elemental features of hard dental tissues. In contrast to these approaches, Raman Microspectroscopy (RMS) has the great advantage of simultaneously providing, at the same time and on the same sample, a morpho-chemical correlation between the microscopic information from the visual analysis of the sample and its chemical and macromolecular composition. Hence, RMS represents an innovative and non-invasive technique to study both inorganic and organic teeth components in vitro. The aim of this narrative review is to shed new light on the applicative potential of Raman Microspectroscopy in the dental field. Specific Raman markers representative of sound and pathological hard dental tissues will be discussed, and the future diagnostic application of this technique will be outlined. The objective and detailed information provided by this technique in terms of the structure and chemical/macromolecular components of sound and pathological hard dental tissues could be useful for improving knowledge of several dental pathologies. Scientific articles regarding RMS studies of human hard dental tissues were retrieved from the principal databases by following specific inclusion and exclusion criteria.
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Abstract
Raman spectroscopy (RS) is used to analyze the physiochemical properties of bone because it is non-destructive and requires minimal sample preparation. With over two decades of research involving measurements of mineral-to-matrix ratio, type-B carbonate substitution, crystallinity, and other compositional characteristics of the bone matrix by RS, there are multiple methods to acquire Raman signals from bone, to process those signals, and to determine peak ratios including sub-peak ratios as well as the full-width at half maximum of the most prominent Raman peak, which is nu1 phosphate (ν1PO4). Selecting which methods to use is not always clear. Herein, we describe the components of RS instruments and how they influence the quality of Raman spectra acquired from bone because signal-to-noise of the acquisition and the accompanying background fluorescence dictate the pre-processing of the Raman spectra. We also describe common methods and challenges in preparing acquired spectra for the determination of matrix properties of bone. This article also serves to provide guidance for the analysis of bone by RS with examples of how methods for pre-processing the Raman signals and for determining properties of bone composition affect RS sensitivity to potential differences between experimental groups. Attention is also given to deconvolution methods that are used to ascertain sub-peak ratios of the amide I band as a way to assess characteristics of collagen type I. We provide suggestions and recommendations on the application of RS to bone with the goal of improving reproducibility across studies and solidify RS as a valuable technique in the field of bone research.
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Affiliation(s)
- Mustafa Unal
- Department of Mechanical Engineering, Karamanoglu Mehmetbey University, Karaman, 70200, Turkey.
- Department of Bioengineering, Karamanoglu Mehmetbey University, Karaman, Turkey 70200
- Department of Biophysics, Faculty of Medicine, Karamanoglu Mehmetbey University, Karaman, Turkey 70200
| | - Rafay Ahmed
- Department of Orthopaedic Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
| | - Anita Mahadevan-Jansen
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37235, USA
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Otolaryngology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Jeffry S Nyman
- Department of Orthopaedic Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN 37212, USA
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Kim HJ, Jang JH, Woo SU, Choi KK, Kim SY, Ferracane JL, Lee JH, Choi D, Choi S, Kim S, Bang A, Kim DS. Effect of Novel Bioactive Glass-Containing Dentin Adhesive on the Permeability of Demineralized Dentin. MATERIALS 2021; 14:ma14185423. [PMID: 34576647 PMCID: PMC8465205 DOI: 10.3390/ma14185423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 11/16/2022]
Abstract
This study aimed to evaluate the effect of a novel bioactive glass (BAG)-containing dentin adhesive on the permeability of demineralized dentin. Bioactive glass (85% SiO2, 15% CaO) was fabricated using the sol-gel process, and two experimental dentin adhesives were prepared with 3 wt% silica (silica-containing dentin adhesive; SCA) or BAG (BAG-containing dentin adhesive; BCA). Micro-tensile bond strength (μTBS) test, fracture mode analysis, field-emission scanning electron microscopy (FE-SEM) analysis of adhesive and demineralized dentin, real-time dentinal fluid flow (DFF) rate measurement, and Raman confocal microscopy were performed to compare SCA and BCA. There was no difference in μTBS between the SCA and BCA (p > 0.05). Multiple precipitates were evident on the surface of the BCA, and partial occlusion of dentinal tubules was observed in FE-SEM of BCA-approximated dentin. The DFF rate was reduced by 50.10% after BCA approximation and increased by 6.54% after SCA approximation. Raman confocal spectroscopy revealed an increased intensity of the hydroxyapatite (HA) peak on the dentin surface after BCA application. The novel BAG-containing dentin adhesive showed the potential of both reducing dentin permeability and dentin remineralization.
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Affiliation(s)
- Hyun-Jung Kim
- Department of Conservative Dentistry, Kyung Hee University Dental Hospital, Seoul 02453, Korea;
| | - Ji-Hyun Jang
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
| | - Sang Uk Woo
- Department of Conservative Dentistry, Graduate School, Kyung Hee University, Seoul 02453, Korea;
| | - Kyoung-Kyu Choi
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
| | - Sun-Young Kim
- Department of Conservative Dentistry, School of Dentistry, Dental Research Institute, Seoul National University, Seoul 03080, Korea;
| | - Jack L. Ferracane
- Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University, Portland, OR 97201, USA;
| | - Jung-Hwan Lee
- Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 31116, Chungcheongnam-Do, Korea;
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Chungcheongnam-Do, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan 31116, Chungcheongnam-Do, Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Cheonan 31116, Chungcheongnam-Do, Korea
| | - Dongseok Choi
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
- Oregon Health & Science University-Portland State University School of Public Health, Oregon Health & Science University, Portland, OR 97239, USA
| | - Samjin Choi
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Soogeun Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Ayoung Bang
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Duck-Su Kim
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
- Correspondence: ; Tel.: +82-2-958-9330; Fax: +82-2-960-5108
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Staritzbichler R, Hunold P, Estrela-Lopis I, Hildebrand PW, Isermann B, Kaiser T. Raman spectroscopy on blood serum samples of patients with end-stage liver disease. PLoS One 2021; 16:e0256045. [PMID: 34492024 PMCID: PMC8423274 DOI: 10.1371/journal.pone.0256045] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/28/2021] [Indexed: 12/05/2022] Open
Abstract
Raman spectroscopy has shown to be a promising method for the examination of biomedical samples. However, until now, its efficacy has not been established in clinical diagnostics. In this study, Raman spectroscopy’s potential application in medical laboratories is evaluated for a large variety (38) of biomarkers. Given 234 serum samples from a cohort of patients with different stages of liver disease, we performed Raman spectroscopy at 780nm excitation wavelength. The Raman spectra were analyzed in combination with the results of routine diagnostics using specifically developed complex mathematical algorithms, including fluorescence filtering, frequency subset selection and several overfitting circumventing strategies, such as independent validation. With the results of this cohort, which were validated in 328 independent samples, a significant proof-of-concept study was completed. This study highlights the need to prevent overfitting and to use independent data for validation. The results reveal that Raman spectroscopy has high potential for use in medical laboratory diagnostics to simultaneously quantify multiple biomarkers.
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Affiliation(s)
- René Staritzbichler
- Institute for Medical Physics and Biophysics, Leipzig University, Leipzig, Germany
- * E-mail: (RS); (TK)
| | - Pascal Hunold
- Institute for Medical Physics and Biophysics, Leipzig University, Leipzig, Germany
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Irina Estrela-Lopis
- Institute for Medical Physics and Biophysics, Leipzig University, Leipzig, Germany
| | | | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Thorsten Kaiser
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
- * E-mail: (RS); (TK)
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Souza-Monteiro D, Ferreira RDO, Eiró LG, de Oliveira Lima LA, Balbinot GS, da Paz SPA, Albuquerque ARL, Collares FM, Angélica RS, Pessanha S, do Socorro Ferraz Maia C, Lima RR. Long-term exposure to low doses of aluminum affects mineral content and microarchitecture of rats alveolar bone. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:45879-45890. [PMID: 33881690 DOI: 10.1007/s11356-021-13937-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Aluminum (Al) is one of the most found elements in nature in many forms, and human exposure can be quite common. Therefore, it is important to investigate the effects of exposure to Al mainly at low doses and for a prolonged period, in order to simulate human exposure in the periodontium, an important structure for support and protection of the teeth. This investigation aimed to study the aluminum chloride (AlCl3) toxicological effects in the mineral composition and micromorphology of the alveolar bone of rats. Two groups of eight male Wistar rats were used for the experiment. AlCl3 group was exposed to AlCl3 orally at a dose of 8.3 mg/kg/day for 60 days, while the control group received only distilled water. After that, the mandibles were collected and submitted to the following analyses: Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray microtomography analysis; blood was also collected for determination of Al circulating levels. Our data showed that AlCl3 was capable of increasing Al circulating levels in blood. It was able to promote changes in the mineral content and triggers significant changes in the mineralized bone microstructure, such as number and thickness of trabeculae, being associated with alveolar bone-loss.
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Affiliation(s)
- Deiweson Souza-Monteiro
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Railson de Oliveira Ferreira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Luciana Guimarães Eiró
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Leidiane Alencar de Oliveira Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Gabriela Souza Balbinot
- Dental Material Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | | | | | - Fabricio Mezzomo Collares
- Dental Material Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rômulo Simões Angélica
- Laboratory of X-Ray Diffraction, Institute of Geosciences, Federal University of Pará, Belém, Pará, Brazil
| | - Sofia Pessanha
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics, NOVA School of Science and Technology, Campus Caparica, 2829-516, Caparica, Portugal
| | - Cristiane do Socorro Ferraz Maia
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém, Pará, Brazil
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil.
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Bouzy P, O'Grady S, Madupalli H, Tecklenburg M, Rogers K, Palombo F, Morgan MP, Stone N. A time-course Raman spectroscopic analysis of spontaneous in vitro microcalcifications in a breast cancer cell line. J Transl Med 2021; 101:1267-1280. [PMID: 34117364 PMCID: PMC8367820 DOI: 10.1038/s41374-021-00619-0] [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: 02/18/2021] [Revised: 05/17/2021] [Accepted: 05/17/2021] [Indexed: 01/05/2023] Open
Abstract
Microcalcifications are early markers of breast cancer and can provide valuable prognostic information to support clinical decision-making. Current detection of calcifications in breast tissue is based on X-ray mammography, which involves the use of ionizing radiation with potentially detrimental effects, or MRI scans, which have limited spatial resolution. Additionally, these techniques are not capable of discriminating between microcalcifications from benign and malignant lesions. Several studies show that vibrational spectroscopic techniques are capable of discriminating and classifying breast lesions, with a pathology grade based on the chemical composition of the microcalcifications. However, the occurrence of microcalcifications in the breast and the underlying mineralization process are still not fully understood. Using a previously established model of in vitro mineralization, the MDA-MB-231 human breast cancer cell line was induced using two osteogenic agents, inorganic phosphate (Pi) and β-glycerophosphate (βG), and direct monitoring of the mineralization process was conducted using Raman micro-spectroscopy. MDA-MB-231 cells cultured in a medium supplemented with Pi presented more rapid mineralization (by day 3) than cells exposed to βG (by day 11). A redshift of the phosphate stretching peak for cells supplemented with βG revealed the presence of different precursor phases (octacalcium phosphate) during apatite crystal formation. These results demonstrate that Raman micro-spectroscopy is a powerful tool for nondestructive analysis of mineral species and can provide valuable information for evaluating mineralization dynamics and any associated breast cancer progression, if utilized in pathological samples.
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Affiliation(s)
- Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, UK
| | - Shane O'Grady
- School of Pharmacy and Biomolecular Science, Royal College of Surgeons in Ireland, Dublin, 2, Ireland
| | - Honey Madupalli
- Department of Chemistry and Biochemistry and Science of Advanced Materials Program, Central Michigan University, Mt. Pleasant, MI, USA
| | - Mary Tecklenburg
- Department of Chemistry and Biochemistry and Science of Advanced Materials Program, Central Michigan University, Mt. Pleasant, MI, USA
| | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
| | | | - Maria P Morgan
- School of Pharmacy and Biomolecular Science, Royal College of Surgeons in Ireland, Dublin, 2, Ireland
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
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49
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Gaihre B, Bharadwaz A, Unagolla JM, Jayasuriya AC. Evaluation of the optimal dosage of BMP-9 through the comparison of bone regeneration induced by BMP-9 versus BMP-2 using an injectable microparticle embedded thermosensitive polymeric carrier in a rat cranial defect model. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 127:112252. [PMID: 34225891 PMCID: PMC8260961 DOI: 10.1016/j.msec.2021.112252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 05/03/2021] [Accepted: 06/07/2021] [Indexed: 01/07/2023]
Abstract
Bone morphogenetic proteins (BMPs) are well known as enhancers and facilitators of osteogenesis during bone regeneration. The use of recombinant BMP-2 (rhBMP-2) in bone defect healing has drawbacks, which has driven the scouting for alternatives, such as recombinant BMP-9 (rhBMP-9), to provide comparable new bone formation. However, the dosage of rhBMP-9 is quintessential for the facilitation of adequate bone defect healing. Therefore, this study has been designed to evaluate the optimal dosage of BMP-9 by comparing the bone defect healing induced by rhBMP-9 over rhBMP-2. The chitosan (CS) microparticles (MPs), coated with BMPs, were embedded in a thermoresponsive methylcellulose (MC) and calcium alginate (Alg) based injectable delivery system containing a dosage of either 0.5 μg or 1.5 μg of the respective rhBMP per bone defect. A 5 mm critical-sized cranial defect rat model has been used in this study, and bone tissues were harvested at eight weeks post-surgery. The standard tools for comparing the new bone regeneration included micro computerized tomography (micro-CT) and histological analysis. A novel perspective of analyzing the new bone quality and crystallinity was employed by using Raman spectroscopy, along with its elastic modulus quantified through Atomic Force Microscopy (AFM). Results showed that the rhBMP-9 administered at a dosage of 1.5 μg per bone defect, using this delivery system, can adequately facilitate the bone void filling with ample new bone mineralization and crystallinity as compared to rhBMP-2, thus approving the hypothesis for a viable rhBMP-2 alternative.
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Affiliation(s)
- Bipin Gaihre
- Biomedical Engineering Program, Department of Bioengineering, College of Engineering, The University of Toledo, Toledo, OH 43607, USA
| | - Angshuman Bharadwaz
- Biomedical Engineering Program, Department of Bioengineering, College of Engineering, The University of Toledo, Toledo, OH 43607, USA
| | - Janitha M Unagolla
- Biomedical Engineering Program, Department of Bioengineering, College of Engineering, The University of Toledo, Toledo, OH 43607, USA
| | - Ambalangodage C Jayasuriya
- Biomedical Engineering Program, Department of Bioengineering, College of Engineering, The University of Toledo, Toledo, OH 43607, USA; Department of Orthopaedic Surgery, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH 43614, USA.
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50
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Giardina G, Micko A, Bovenkamp D, Krause A, Placzek F, Papp L, Krajnc D, Spielvogel CP, Winklehner M, Höftberger R, Vila G, Andreana M, Leitgeb R, Drexler W, Wolfsberger S, Unterhuber A. Morpho-Molecular Metabolic Analysis and Classification of Human Pituitary Gland and Adenoma Biopsies Based on Multimodal Optical Imaging. Cancers (Basel) 2021; 13:3234. [PMID: 34209497 PMCID: PMC8267638 DOI: 10.3390/cancers13133234] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 12/12/2022] Open
Abstract
Pituitary adenomas count among the most common intracranial tumors. During pituitary oncogenesis structural, textural, metabolic and molecular changes occur which can be revealed with our integrated ultrahigh-resolution multimodal imaging approach including optical coherence tomography (OCT), multiphoton microscopy (MPM) and line scan Raman microspectroscopy (LSRM) on an unprecedented cellular level in a label-free manner. We investigated 5 pituitary gland and 25 adenoma biopsies, including lactotroph, null cell, gonadotroph, somatotroph and mammosomatotroph as well as corticotroph. First-level binary classification for discrimination of pituitary gland and adenomas was performed by feature extraction via radiomic analysis on OCT and MPM images and achieved an accuracy of 88%. Second-level multi-class classification was performed based on molecular analysis of the specimen via LSRM to discriminate pituitary adenomas subtypes with accuracies of up to 99%. Chemical compounds such as lipids, proteins, collagen, DNA and carotenoids and their relation could be identified as relevant biomarkers, and their spatial distribution visualized to provide deeper insight into the chemical properties of pituitary adenomas. Thereby, the aim of the current work was to assess a unique label-free and non-invasive multimodal optical imaging platform for pituitary tissue imaging and to perform a multiparametric morpho-molecular metabolic analysis and classification.
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Affiliation(s)
- Gabriel Giardina
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
| | - Alexander Micko
- Department of Neurosurgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (A.M.); (S.W.)
| | - Daniela Bovenkamp
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
| | - Arno Krause
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
| | - Fabian Placzek
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
| | - Laszlo Papp
- QIMP Team, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (L.P.); (D.K.)
| | - Denis Krajnc
- QIMP Team, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (L.P.); (D.K.)
| | - Clemens P. Spielvogel
- Christian Doppler Laboratory for Applied Metabolomics, Division of Nuclear Medicine, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria;
| | - Michael Winklehner
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (M.W.); (R.H.)
| | - Romana Höftberger
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (M.W.); (R.H.)
| | - Greisa Vila
- Department of Internal Medicine III, Division of Endocrinology and Metabolism, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria;
| | - Marco Andreana
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
| | - Rainer Leitgeb
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
| | - Wolfgang Drexler
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
| | - Stefan Wolfsberger
- Department of Neurosurgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (A.M.); (S.W.)
| | - Angelika Unterhuber
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; (G.G.); (D.B.); (A.K.); (F.P.); (R.L.); (W.D.); (A.U.)
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