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Abedi M, Shafiee M, Afshari F, Mohammadi H, Ghasemi Y. Collagen-Based Medical Devices for Regenerative Medicine and Tissue Engineering. Appl Biochem Biotechnol 2023:10.1007/s12010-023-04793-3. [PMID: 38133881 DOI: 10.1007/s12010-023-04793-3] [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: 12/09/2023] [Indexed: 12/23/2023]
Abstract
Assisted reproductive technologies are key to solving the problems of aging and organ defects. Collagen is compatible with living tissues and has many different chemical properties; it has great potential for use in reproductive medicine and the engineering of reproductive tissues. It is a natural substance that has been used a lot in science and medicine. Collagen is a substance that can be obtained from many different animals. It can be made naturally or created using scientific methods. Using pure collagen has some drawbacks regarding its physical and chemical characteristics. Because of this, when collagen is processed in various ways, it can better meet the specific needs as a material for repairing tissues. In simpler terms, collagen can be used to help regenerate bones, cartilage, and skin. It can also be used in cardiovascular repair and other areas. There are different ways to process collagen, such as cross-linking it, making it more structured, adding minerals to it, or using it as a carrier for other substances. All of these methods help advance the field of tissue engineering. This review summarizes and discusses the current progress of collagen-based materials for reproductive medicine.
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Affiliation(s)
- Mehdi Abedi
- Pharmaceutical Science Research Center, Shiraz University of Medical Science, Shiraz, Iran.
- Research and Development Department, Danesh Salamat Kowsar Co., P.O. Box 7158186496, Shiraz, Iran.
| | - Mina Shafiee
- Research and Development Department, Danesh Salamat Kowsar Co., P.O. Box 7158186496, Shiraz, Iran
| | - Farideh Afshari
- Department of Tissue Engineering and Applied Cell Science, School of Advanced Medical Sciences and Technology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamidreza Mohammadi
- Research and Development Department, Danesh Salamat Kowsar Co., P.O. Box 7158186496, Shiraz, Iran
| | - Younes Ghasemi
- Pharmaceutical Science Research Center, Shiraz University of Medical Science, Shiraz, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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2
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Brandão ALC, Batista de Carvalho LAE, Gonçalves D, Piga G, Cunha E, Marques MPM. Differentiating present-day from ancient bones by vibrational spectroscopy upon acetic acid treatment. Forensic Sci Int 2023; 347:111690. [PMID: 37086578 DOI: 10.1016/j.forsciint.2023.111690] [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: 06/16/2022] [Revised: 12/07/2022] [Accepted: 04/11/2023] [Indexed: 04/24/2023]
Abstract
Acetic acid treatment for an accurate differentiation between ancient and recent human bones was assessed using Raman and FTIR-ATR spectroscopies. Each set of skeletal samples was analysed by these techniques, prior and after chemical washing, in order to determine the variations in bone´s chemical composition and crystallinity. Bone samples were collected from several independent sources: recent bones burned under controlled experimental conditions or cremated, and archaeological (XVII century and Iron Age). The effect of acetic acid, expected to impact mostly on carbonates, was clearly evidenced in the spectra of all samples, particularly in FTIR-ATR, mainly through the bands typical of A- and B-carbonates. Furthermore, as seen for crematoria and archaeological samples, acetic acid was found to remove contaminants such as calcium hydroxide. Overall, acetic acid treatment can be an effective method for removing carbonates (exogenous but possibly also endogenous) and external contaminants from bone. However, these effects are dependent on the skeletal conditions (e.g. post-mortem interval and burning settings). In addition, this chemical washing was shown to be insufficient for an unequivocal discrimination between recent and archaeological skeletal remains. Based on the measured IR indexes, only cremated bones could be clearly distinguished.
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Affiliation(s)
- A L C Brandão
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal
| | - L A E Batista de Carvalho
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal.
| | - D Gonçalves
- University of Coimbra, Laboratory of Forensic Anthropology, Centre for Functional Ecology, 3000-456 Coimbra, Portugal; University of Coimbra, Research Centre for Anthropology and Health (CIAS), 3000-456 Coimbra, Portugal; Archaeosciences Laboratory, Directorate General Cultural Heritage (LARC/CIBIO/InBIO), 1349-021 Lisbon, Portugal
| | - G Piga
- University of Coimbra, Laboratory of Forensic Anthropology, Centre for Functional Ecology, 3000-456 Coimbra, Portugal; University of Sassari, DISSUF - Department of History, Human Sciences and Education, Italy
| | - E Cunha
- University of Coimbra, Laboratory of Forensic Anthropology, Centre for Functional Ecology, 3000-456 Coimbra, Portugal; University of Coimbra, Department of Life Sciences, 3000-456 Coimbra, Portugal; Institute of Legal Medicine and Forensic Sciences, 1169-201 Lisbon, Portugal
| | - M P M Marques
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal; University of Coimbra, Department of Life Sciences, 3000-456 Coimbra, Portugal
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Festa G, Mamede AP, Gonçalves D, Cunha E, Kockelmann W, Parker SF, Batista de Carvalho LE, Marques MPM. In-Situ Anaerobic Heating of Human Bones Probed by Neutron Diffraction. Anal Chem 2023; 95:2469-2477. [PMID: 36638233 PMCID: PMC9893223 DOI: 10.1021/acs.analchem.2c04721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The first neutron diffraction study of in-situ anaerobic burning of human bones is reported, aiming at an interpretation of heat-induced changes in bone, which were previously detected by vibrational spectroscopy, including inelastic neutron scattering techniques. Structural and crystallinity variations were monitored in samples of the human femur and tibia, as well as a reference hydroxyapatite, upon heating under anaerobic conditions. Information on the structural reorganization of the bone matrix as a function of temperature, from room temperature to 1000 °C, was achieved. Noticeable crystallographic and domain size variations, together with O-H bond lengths and background variations, were detected. Above 700 °C, the inorganic bone matrix became highly symmetric, devoid of carbonates and organic constituents, while for the lower temperature range (<700 °C), a considerably lower crystallinity was observed. The present pilot study is expected to contribute to a better understanding of the heat-prompted changes in bone, which can be taken as biomarkers of the burning temperature. This information is paramount for bone analysis in forensic science as well as in archeology and may also have useful applications in other biomaterial studies.
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Affiliation(s)
- Giulia Festa
- CREF
- Museo Storico della Fisica e Centro Studi e Ricerche “Enrico
Fermi”, Via Panisperna 89a, Rome00184, Italy
| | - Adriana P. Mamede
- Molecular
Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra3004-535, Portugal
| | - David Gonçalves
- Centre
for Functional Ecology, Lab Forensic Anthropology, Department of Life
Sciences, University of Coimbra, Coimbra3000-456, Portugal,Research
Centre for Anthropology and Health (CIAS), University of Coimbra, Coimbra3000-456, Portugal,Archaeosciences
Lab, Directorate General Cultural Heritage (LARC/CIBIO/InBIO), Lisbon1300-418, Portugal
| | - Eugénia Cunha
- Centre
for Functional Ecology, Lab Forensic Anthropology, Department of Life
Sciences, University of Coimbra, Coimbra3000-456, Portugal,Department
of Life Sciences, University of Coimbra, Coimbra3000-456, Portugal
| | - Winfried Kockelmann
- ISIS
Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Chilton, DidcotOX11 0QX, United
Kingdom
| | - Stewart F. Parker
- ISIS
Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Chilton, DidcotOX11 0QX, United
Kingdom,
| | | | - Maria Paula M. Marques
- Molecular
Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra3004-535, Portugal,Department
of Life Sciences, University of Coimbra, Coimbra3000-456, Portugal
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Chou CC, Shih PJ, Jou TS, Hsu MY, Chen JP, Hsu RH, Lee NC, Chien YH, Hwu WL, Wang IJ. Corneal Biomechanical Characteristics in Osteogenesis Imperfecta With Collagen Defect. Transl Vis Sci Technol 2023; 12:14. [PMID: 36622688 PMCID: PMC9838590 DOI: 10.1167/tvst.12.1.14] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Purpose To identify the characteristic corneal biomechanical properties of osteogenesis imperfecta (OI), and to compare the corneal biomechanical properties between OI and keratoconus. Methods We included 46 eyes of 23 patients with OI, 188 eyes of 99 keratoconus patients, and 174 eyes of 92 normal controls to compare corneal biomechanical parameters between OI corneas, keratoconus, and normal controls by using Corneal Visualization Scheimpflug Technology (Corvis ST). Results Patients with OI had significantly higher Corvis biomechanical index (CBI) (P < 0.001), higher tomographic and biomechanical index (TBI) (P = 0.040), lower Corvis Biomechanical Factor (CBiF) (P = 0.034), and lower stiffness parameter at first applanation (SP-A1) (P < 0.001) compared with normal controls. In contrast, OI group showed lower CBI (P < 0.001), lower TBI (P < 0.001), higher CBiF (P < 0.001), and higher SP-A1 (P = 0.020) than keratoconus group. Notably, the stress-strain index (SSI) was not significantly different between the OI and normal controls (P = 1.000), whereas keratoconus showed the lowest SSI compared with OI group (P = 0.025) and normal controls (P < 0.001). Conclusions Although the corneal structures of OI patients are less stable and easier to deform as compared to those of the control group, there is no significant difference in material stiffness observed between the OI and normal controls. In contrast, the corneas of keratoconus showed not only lower structural stability and higher deformability but also lower material stiffness compared with those of OI cornea and normal controls. Translational Relevance The biomechanical alterations are different between OI corneas and keratoconus.
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Affiliation(s)
- Chien-Chih Chou
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan,School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan,Department of Ophthalmology, Taichung Veterans General Hospital, Taichung, Taiwan,Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Po-Jen Shih
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Tzuu-Shuh Jou
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan,Center of Precision Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Min-Yen Hsu
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan,Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Jun-Peng Chen
- Biostatistics Task Force of Taichung Veterans General Hospital, Taichung, Taiwan
| | - Rai-Hseng Hsu
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan,Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Ni-Chung Lee
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan,Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Yin-Hsiu Chien
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan,Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Wuh-Liang Hwu
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan,Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - I-Jong Wang
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan,Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan
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Cañas-Gutiérrez A, Arboleda-Toro D, Monsalve-Vargas T, Castro-Herazo C, Meza-Meza J. Techniques for Bone Assessment and Characterization: Porcine Hard Palate Case Study. Heliyon 2022; 8:e09626. [PMID: 35711972 PMCID: PMC9192817 DOI: 10.1016/j.heliyon.2022.e09626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/21/2022] [Accepted: 05/27/2022] [Indexed: 11/11/2022] Open
Abstract
The hard palate plate has an important structural function that separates the nasal cavity and the nasopharynx. Incomplete regeneration of palatal fistulae in children with a cleft palate deformity after primary palatoplasty is a relatively common complication. To date, the information about the physicochemical bone features of this region is deficient, due to the low availability of human samples. Swine and human bone share anatomical similarities. Specifically, pig bones are widely used as experimental animal models in dental, orthopedic, or surgical techniques. The aim of this study was to show different techniques to evaluate and characterize alternative properties of pig hard palate bone, compared to commercial hydroxyapatite, one of the most used biomaterials for bone tissue regeneration. Chemical analyses by Energy dispersive spectroscopy (EDS) and X-ray fluorescence (XRF) showed calcium and phosphate ions as the main constituents of bone, while magnesium, iron, sodium, potassium, and zinc ions were minor constituents. The calcium phosphate molar ratio (Ca/P) in the bone was low (1.1 ± 0.2) due to the very young specimen sample used. The FTIR spectrum shows the presence of phosphates ions (PO43-) and the main characteristics of collagen type I. The XRD results showed that the hard palate bone has a mixture of calcium, octacalcium dihydrogen phosphate (OCP), and apatite, where OCP is the predominant phase. Besides, this research demonstrated that the young bone has low crystallinity and small crystal size compared with commercial hydroxyapatite (HA). The palatine process of maxilla density and porosity data reported, suggest that the palate bone is getting closer to the compact bone with a 52.78 ± 2.91% porosity and their mechanical properties depend on the preparation conditions and the area of the bone analyzed.
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Marques MPM, Batista de Carvalho LAE, Gonçalves D, Cunha E, Parker SF. The impact of moderate heating on human bones: an infrared and neutron spectroscopy study. ROYAL SOCIETY OPEN SCIENCE 2021; 8:210774. [PMID: 34729208 PMCID: PMC8548792 DOI: 10.1098/rsos.210774] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/29/2021] [Indexed: 05/07/2023]
Abstract
This study aims to analyse human bones exposed to low/medium temperatures (200-650°C) under experimentally controlled conditions, both oxidizing and reducing, using complementary optical and neutron vibrational spectroscopy techniques. Clear differences were observed between the aerobically and anaerobically heated bones. The organic constituents disappeared at lower temperatures for the former (ca 300°C), while they lingered for higher temperatures in anaerobic environments (ca 450-550°C). Unsaturated non-graphitizing carbon species (chars) were detected mainly for anaerobically heated samples, and cyanamide formation occurred only at 650°C in reducing settings. Overall, the main changes were observed from 300 to 400°C in anaerobic conditions and from 450 to 500°C in aerobic environments. The present results enabled the identification of specific spectroscopic biomarkers of the effect of moderate temperatures (less than or equal to 650°C) on human bone, thus contributing to a better characterization of forensic and archaeological skeletal remains subject to heating under distinct environmental settings. In particular, these data may provide information regarding cannibalism or ancient bone boiling and defleshing rituals.
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Affiliation(s)
- M. P. M. Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - L. A. E. Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - D. Gonçalves
- Laboratory of Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, 3000-456 Coimbra, Portugal
- Research Centre for Anthropology and Health (CIAS), University of Coimbra, 3000-456 Coimbra, Portugal
- Archaeosciences Laboratory, Directorate General Cultural Heritage (LARC/CIBIO/InBIO), 1349-021 Lisbon, Portugal
| | - E. Cunha
- Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
- Laboratory of Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, 3000-456 Coimbra, Portugal
| | - S. F. Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK
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Magnesium whitlockite - omnipresent in pathological mineralisation of soft tissues but not a significant inorganic constituent of bone. Acta Biomater 2021; 125:72-82. [PMID: 33610767 DOI: 10.1016/j.actbio.2021.02.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/26/2021] [Accepted: 02/12/2021] [Indexed: 01/03/2023]
Abstract
Whitlockite is a calcium phosphate that was first identified in minerals collected from the Palermo Quarry, New Hampshire. The terms magnesium whitlockite [Mg-whitlockite; Ca18Mg2(HPO4)2(PO4)12] and beta-tricalcium phosphate [β-TCP; β-Ca3(PO4)2] are often used interchangeably since Mg-whitlockite is not easily distinguished from β-Ca3(PO4)2 by powder X-ray diffraction although their crystalline structures differ significantly. Being both osteoconductive and bioresorbable, Mg-whitlockite is pursued as a synthetic bone graft substitute. In recent years, advances in development of synthetic Mg-whitlockite have been accompanied by claims that Mg-whitlockite is the second most abundant inorganic constituent of bone, occupying as much as 20-35 wt% of the inorganic fraction. To find evidence in support of this notion, this review presents an exhaustive summary of Mg-whitlockite identification in biological tissues. Mg-whitlockite is mainly found in association with pathological mineralisation of various soft tissues and dental calculus, and occasionally with enamel and dentine. With the exception of high-temperature treated tumoural calcified deposits around interphalangeal and metacarpal joints and rhomboidal Mg-whitlockite crystals in post-apoptotic osteocyte lacunae in human alveolar bone, this unusual mineral has never been detected in the extracellular matrix of mammalian bone. Characterisation techniques capable of unequivocally distinguishing between different calcium phosphate phases, such as high-resolution imaging, crystallography, and/or spectroscopy have exclusively identified bone mineral as poorly crystalline, ion-substituted, carbonated apatite. The idea that Mg-whitlockite is a significant constituent of bone mineral remains unsubstantiated. Contrary to claims that such biomaterials represent a bioinspired/biomimetic approach to bone repair, Mg-whitlockite remains, exclusively, a pathological biomineral. STATEMENT OF SIGNIFICANCE: Magnesium whitlockite (Mg-whitlockite) is a unique calcium phosphate that typically features in pathological calcification of soft tissues; however, an alarming trend emerging in the synthetic bioceramics community claims that Mg-whitlockite occupies 20-35 wt% of bone mineral and therefore synthetic Mg-whitlockite represents a biomimetic approach towards bone regeneration. By providing an overview of Mg-whitlockite detection in biological tissues and scrutinising a diverse cross-section of literature relevant to bone composition analysis, this review concludes that Mg-whitlockite is exclusively a pathological biomineral, and having never been reported in bone extracellular matrix, Mg-whitlockite does not constitute a biomimetic strategy for bone repair.
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Marques MPM, Gonçalves D, Mamede AP, Coutinho T, Cunha E, Kockelmann W, Parker SF, Batista de Carvalho LAE. Profiling of human burned bones: oxidising versus reducing conditions. Sci Rep 2021; 11:1361. [PMID: 33446708 PMCID: PMC7809265 DOI: 10.1038/s41598-020-80462-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/11/2020] [Indexed: 12/17/2022] Open
Abstract
Complementary optical and neutron-based vibrational spectroscopy techniques (Infrared, Raman and inelastic neutron scattering) were applied to the study of human bones (femur and humerus) burned simultaneously under either aerobic or anaerobic conditions, in a wide range of temperatures (400 to 1000 °C). This is the first INS study of human skeletal remains heated in an oxygen-deprived atmosphere. Clear differences were observed between both types of samples, namely the absence of hydroxyapatite's OH vibrational bands in bone burned anaerobically (in unsealed containers), coupled to the presence of cyanamide (NCNH2) and portlandite (Ca(OH)2) in these reductive conditions. These results are expected to allow a better understanding of the heat effect on bone´s constituents in distinct environmental settings, thus contributing for an accurate characterisation of both forensic and archaeological human skeletal remains found in distinct scenarios regarding oxygen availability.
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Affiliation(s)
- M P M Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - D Gonçalves
- Laboratory of Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, 3000-456, Coimbra, Portugal
- Research Centre for Anthropology and Health (CIAS), University of Coimbra, 3000-456, Coimbra, Portugal
- Archaeosciences Laboratory, Directorate General Cultural Heritage (LARC/CIBIO/InBIO), 1349-021, Lisbon, Portugal
| | - A P Mamede
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - T Coutinho
- Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - E Cunha
- Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
- Laboratory of Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, 3000-456, Coimbra, Portugal
| | - W Kockelmann
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK
| | - S F Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK
| | - L A E Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal.
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Shah FA. Towards refining Raman spectroscopy-based assessment of bone composition. Sci Rep 2020; 10:16662. [PMID: 33028904 PMCID: PMC7541616 DOI: 10.1038/s41598-020-73559-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/17/2020] [Indexed: 01/21/2023] Open
Abstract
Various compositional parameters are derived using intensity ratios and integral area ratios of different spectral peaks and bands in the Raman spectrum of bone. The [Formula: see text]1-, [Formula: see text]2-,[Formula: see text]3-, [Formula: see text]4 PO43-, and [Formula: see text] CO32- bands represent the inorganic phase while amide I, amide III, Proline, Hydroxyproline, Phenylalanine, δ(CH3), δ(CH2), and [Formula: see text](C-H) represent the organic phase. Here, using high-resolution Raman spectroscopy, it is demonstrated that all PO43- bands of bone either partially overlap with or are positioned close to spectral contributions from the organic component. Assigned to the organic component, a shoulder at 393 cm-1 compromises accurate estimation of [Formula: see text]2 PO43- integral area, i.e., phosphate/apatite content, with implications for apatite-to-collagen and carbonate-to-phosphate ratios. Another feature at 621 cm-1 may be inaccurately interpreted as [Formula: see text]4 PO43- band broadening. In the 1020-1080 cm-1 range, the ~ 1047 cm-1 [Formula: see text]3 PO43- sub-component is obscured by the 1033 cm-1 Phenylalanine peak, while the ~ 1076 cm-1 [Formula: see text]3 PO43- sub-component is masked by the [Formula: see text]1 CO32- band. With [Formula: see text]1 PO43- peak broadening, [Formula: see text]2 PO43- integral area increases exponentially and individual peaks comprising the [Formula: see text]4 PO43- band merge together. Therefore, [Formula: see text]2 PO43- and [Formula: see text]4 PO43- band profiles are sensitive to changes in mineral crystallinity.
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Affiliation(s)
- Furqan A Shah
- Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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10
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Marques MPM, Mamede AP, Vassalo AR, Makhoul C, Cunha E, Gonçalves D, Parker SF, Batista de Carvalho LAE. Heat-induced Bone Diagenesis Probed by Vibrational Spectroscopy. Sci Rep 2018; 8:15935. [PMID: 30374054 PMCID: PMC6206023 DOI: 10.1038/s41598-018-34376-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/12/2018] [Indexed: 12/17/2022] Open
Abstract
Complementary vibrational spectroscopic techniques - infrared, Raman and inelastic neutron scattering (INS) - were applied to the study of human bone burned under controlled conditions (400 to 1000 °C). This is an innovative way of tackling bone diagenesis upon burning, aiming at a quantitative evaluation of heat-induced dimensional changes allowing a reliable estimation of pre-burning skeletal dimensions. INS results allowed the concomitant observation of the hydroxyl libration (OHlibration), hydroxyl stretching (ν(OH)) and (OHlibration + ν(OH)) combination modes, leading to an unambiguous assignment of these INS features to bioapatite and confirming hydroxylation of bone's inorganic matrix. The OHlib, ν(OH) and ν4(PO43-) bands were identified as spectral biomarkers, which displayed clear quantitative relationships with temperature revealing heat-induced changes in bone's H-bonding pattern during the burning process. These results will enable the routine use of FTIR-ATR (Fourier Transform Infrared-Attenuated Total Reflectance) for the analysis of burned skeletal remains, which will be of the utmost significance in forensic, bioanthropological and archaeological contexts.
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Affiliation(s)
- M P M Marques
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - A P Mamede
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - A R Vassalo
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
- Laboratory. Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal
- Research Centre for Anthropology and Health (CIAS), University of Coimbra, Coimbra, Portugal
| | - C Makhoul
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
- Laboratory. Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal
| | - E Cunha
- Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- Laboratory. Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal
| | - D Gonçalves
- Laboratory. Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal
- Research Centre for Anthropology and Health (CIAS), University of Coimbra, Coimbra, Portugal
- Archaeosciences Laboratory., Directorate General Cultural Heritage (LARC/CIBIO/InBIO), Lisbon, Portugal
| | - S F Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX, 11 0QX, United Kingdom
| | - L A E Batista de Carvalho
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal.
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