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Rokni E, Simon JC. Effect of ambient gas and crystal features on Doppler ultrasound twinkling of pathological mineralizations. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2023; 154:3397-3402. [PMID: 37991465 DOI: 10.1121/10.0022511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 11/03/2023] [Indexed: 11/23/2023]
Abstract
Color Doppler twinkling on kidney stones and other pathological mineralizations is theorized to arise from stable microbubbles, which suggests twinkling will be sensitive to ambient gas. Here, lab-grown cholesterol, calcium phosphate, and uric acid crystals were imaged with ultrasound in water while varying oxygen, carbon dioxide, and nitrogen levels. Twinkling was found to increase on cholesterol in elevated oxygen, cholesterol and calcium phosphate in elevated carbon dioxide, and no crystals in elevated nitrogen. These results support the crevice microbubble theory of twinkling and suggest gases may be varied to enhance twinkling on some mineralizations.
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Affiliation(s)
- Eric Rokni
- Graduate Program in Acoustics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Julianna C Simon
- Graduate Program in Acoustics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Keeling GP, Baark F, Katsamenis OL, Xue J, Blower PJ, Bertazzo S, T M de Rosales R. 68Ga-bisphosphonates for the imaging of extraosseous calcification by positron emission tomography. Sci Rep 2023; 13:14611. [PMID: 37669973 PMCID: PMC10480432 DOI: 10.1038/s41598-023-41149-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/22/2023] [Indexed: 09/07/2023] Open
Abstract
Radiolabelled bisphosphonates (BPs) and [18F]NaF (18F-fluoride) are the two types of radiotracers available to image calcium mineral (e.g. bone), yet only [18F]NaF has been widely explored for the non-invasive molecular imaging of extraosseous calcification (EC) using positron emission tomography (PET) imaging. These two radiotracers bind calcium mineral deposits via different mechanisms, with BPs chelating to calcium ions and thus being non-selective, and [18F]NaF being selective for hydroxyapatite (HAp) which is the main component of bone mineral. Considering that the composition of EC has been reported to include a diverse range of non-HAp calcium minerals, we hypothesised that BPs may be more sensitive for imaging EC due to their ability to bind to both HAp and non-HAp deposits. We report a comparison between the 68Ga-labelled BP tracer [68Ga]Ga-THP-Pam and [18F]NaF for PET imaging in a rat model of EC that develops macro- and microcalcifications in several organs. Macrocalcifications were identified using preclinical computed tomography (CT) and microcalcifications were identified using µCT-based 3D X-ray histology (XRH) on isolated organs ex vivo. The morphological and mineral analysis of individual calcified deposits was performed using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). PET imaging and ex vivo analysis results demonstrated that while both radiotracers behave similarly for bone imaging, the BP-based radiotracer [68Ga]Ga-THP-Pam was able to detect EC more sensitively in several organs in which the mineral composition departs from that of HAp. Our results strongly suggest that BP-based PET radiotracers such as [68Ga]Ga-THP-Pam may have a particular advantage for the sensitive imaging and early detection of EC by being able to detect a wider array of relevant calcium minerals in vivo than [18F]NaF, and should be evaluated clinically for this purpose.
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Affiliation(s)
- George P Keeling
- Department of Imaging Chemistry & Biology, School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, UK
| | - Friedrich Baark
- Department of Imaging Chemistry & Biology, School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, UK
| | - Orestis L Katsamenis
- Faculty of Engineering and Physical Sciences, Highfield Campus, µ-VIS X-Ray Imaging Centre, University of Southampton, Southampton, SO17 1BJ, UK
| | - Jing Xue
- Department of Medical Physics & Biomedical Engineering, University College London, Malet Place Engineering Building, London, WC1E 6BT, UK
| | - Philip J Blower
- Department of Imaging Chemistry & Biology, School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, UK
| | - Sergio Bertazzo
- Department of Medical Physics & Biomedical Engineering, University College London, Malet Place Engineering Building, London, WC1E 6BT, UK
| | - Rafael T M de Rosales
- Department of Imaging Chemistry & Biology, School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, UK.
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Cohen A, Gotnayer L, Gal S, Aranovich D, Vidavsky N. Multicellular spheroids containing synthetic mineral particles: an advanced 3D tumor model system to investigate breast precancer malignancy potential according to the mineral type. J Mater Chem B 2023; 11:8033-8045. [PMID: 37534429 DOI: 10.1039/d3tb00439b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Mineral particles that form in soft tissues in association with disease conditions are heterogeneous in their composition and physiochemical properties. Hence, it is challenging to study the effect of mineral type on disease progression in a high-throughput and realistic manner. For example, most early breast precancer lesions, termed ductal carcinoma in situ (DCIS), contain microcalcifications (MCs), calcium-containing pathological minerals. The most common type of MCs is calcium phosphate crystals, mainly carbonated apatite; it is associated with either benign or malignant lesions. In vitro studies indicate that the crystal properties of apatite MCs can affect breast cancer progression. A less common type of MCs is calcium oxalate dihydrate (COD), which is almost always found in benign lesions. We developed a 3D tumor model of multicellular spheroids of human precancer cells containing synthetic MC analogs that link the crystal properties of MCs with the progression of breast precancer to invasive cancer. Using this 3D model, we show that apatite crystals induce Her2 overexpression in DCIS cells. This tumor-triggering effect is increased when the carbonate fraction in the MCs decreases. COD crystals, in contrast, decrease Her2 expression in the spheroids, even compared with a control group with no added MC analogs. Furthermore, COD decreases cell proliferation and migration in DCIS monolayers compared to untreated cells and cells incubated with apatite crystals. This finding suggests that COD is not randomly located only in benign lesions-it may actively contribute to suppressing precancer progression in its surroundings. Our model provides an easy-to-manipulate platform to better understand the interactions between mineral particles and their biological microenvironment. A better understanding of the effect of the crystal properties of MCs on precancer progression will potentially provide new directions for better precancer prognosis and treatment.
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Affiliation(s)
- Amit Cohen
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Lotem Gotnayer
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Sahar Gal
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Dina Aranovich
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Netta Vidavsky
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel
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Ruggiero A, Triarico S, Romano A, Maurizi P, Attina G, Mastrangelo S. Bisphosphonates: From Pharmacology to Treatment. BIOMEDICAL AND PHARMACOLOGY JOURNAL 2023; 16:221-229. [DOI: 10.13005/bpj/2603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Bisphosphonates are among the most widely used drugs in the world for their many clinical indications. Their mechanism of action is based on the increase in the level of bone mineralization through the inhibition of osteoclastic activity and the induction of osteoblastic activity. Recent studies also attribute to bisphosphonates an antineoplastic activity, due to the ability of these drugs to inhibit neo angiogenesis, inhibiting the proliferation of endothelial cells. Bisphosphonates have several common properties, including poorly absorbed orally, high affinity for bone mineral, inhibitory effects on osteoclastic bone resorption, prolonged bone retention, and elimination in the urine. Bisphosphonates are generally well tolerated but their use can be, however, burdened by serious side effects such as hypocalcaemia, renal impairment, and aseptic osteonecrosis of the jaw.
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Affiliation(s)
- Antonio Ruggiero
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
| | - Silvia Triarico
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
| | - Alberto Romano
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
| | - Palma Maurizi
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
| | - Giorgio Attina
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
| | - Stefano Mastrangelo
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
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Kunitake JA, Sudilovsky D, Johnson LM, Loh HC, Choi S, Morris PG, Jochelson MS, Iyengar NM, Morrow M, Masic A, Fischbach C, Estroff LA. Biomineralogical signatures of breast microcalcifications. SCIENCE ADVANCES 2023; 9:eade3152. [PMID: 36812311 PMCID: PMC9946357 DOI: 10.1126/sciadv.ade3152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Microcalcifications, primarily biogenic apatite, occur in cancerous and benign breast pathologies and are key mammographic indicators. Outside the clinic, numerous microcalcification compositional metrics (e.g., carbonate and metal content) are linked to malignancy, yet microcalcification formation is dependent on microenvironmental conditions, which are notoriously heterogeneous in breast cancer. We interrogate multiscale heterogeneity in 93 calcifications from 21 breast cancer patients using an omics-inspired approach: For each microcalcification, we define a "biomineralogical signature" combining metrics derived from Raman microscopy and energy-dispersive spectroscopy. We observe that (i) calcifications cluster into physiologically relevant groups reflecting tissue type and local malignancy; (ii) carbonate content exhibits substantial intratumor heterogeneity; (iii) trace metals including zinc, iron, and aluminum are enhanced in malignant-localized calcifications; and (iv) the lipid-to-protein ratio within calcifications is lower in patients with poor composite outcome, suggesting that there is potential clinical value in expanding research on calcification diagnostic metrics to include "mineral-entrapped" organic matrix.
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Affiliation(s)
| | - Daniel Sudilovsky
- Department of Pathology and Laboratory Medicine, Cayuga Medical Center at Ithaca, Ithaca, NY 14850, USA
- Pathology Department, Kingman Regional Medical Center, Kingman, AZ 86409, USA
- Pathology Department, Western Arizona Medical Center, Bullhead City, AZ 86442, USA
- Pathology Department, Yuma Regional Medical Center, Yuma, AZ 85364, USA
| | - Lynn M. Johnson
- Cornell Statistical Consulting Unit, Cornell University, Ithaca, NY 14850, USA
| | - Hyun-Chae Loh
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Siyoung Choi
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Patrick G. Morris
- Medical Oncology Service, Beaumont Hospital, Dublin, Ireland
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY 10065, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY 10021, USA
| | - Maxine S. Jochelson
- Department of Radiology, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY 10065, USA
| | - Neil M. Iyengar
- Department of Medicine, Weill Cornell Medical College, New York, NY 10021, USA
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Monica Morrow
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Admir Masic
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Corresponding author. (L.A.E.); (C.F.); (A.M.)
| | - Claudia Fischbach
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14850, USA
- Corresponding author. (L.A.E.); (C.F.); (A.M.)
| | - Lara A. Estroff
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14850, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14850, USA
- Corresponding author. (L.A.E.); (C.F.); (A.M.)
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Rokni E, Simon JC. The effect of crystal composition and environment on the color Doppler ultrasound twinkling artifact. Phys Med Biol 2023; 68. [PMID: 36634375 DOI: 10.1088/1361-6560/acb2ad] [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: 06/12/2022] [Accepted: 01/12/2023] [Indexed: 01/14/2023]
Abstract
Objective.Pathological mineralizations form throughout the body and can be difficult to detect using conventional imaging methods. Color Doppler ultrasound twinkling highlights ∼60% of kidney stones with a rapid color shift and is theorized to arise from crevice microbubbles as twinkling disappears on kidney stones at elevated pressures and scratched acrylic balls in ethanol. Twinkling also sometimes appears on other pathological mineralizations; however, it is unclear whether the etiology of twinkling is the same as for kidney stones.Approach.In this study, five cholesterol, calcium phosphate, and uric acid crystals were grownin vitroand imaged in Doppler mode with a research ultrasound system and L7-4 transducer in water. To evaluate the influence of pressure on twinkling, the same crystals were imaged in a high-pressure chamber. Then, the effect of surface tension on twinkling was evaluated by imaging crystals in different concentrations of surfactant (1%, 2%, 3%, 4%) and ethanol (10%, 30%, 50%, 70%), artificial urine, bovine blood, and a tissue-mimicking phantom.Main results. Results showed that all crystals twinkled in water, with cholesterol twinkling significantly more than calcium phosphate and uric acid. When the ambient pressure was increased, twinkling disappeared for all tested crystals when pressures reached 7 MPa (absolute) and reappeared when returned to ambient pressure (0.1 MPa). Similarly, twinkling across all crystals decreased with surface tension when imaged in the surfactant and ethanol (statistically significant when surface tension <22 mN m-1) and decreased in blood (surface tension = 52.7 mN m-1) but was unaffected by artificial urine (similar surface tension to water). In the tissue-mimicking phantom, twinkling increased for cholesterol and calcium phosphate crystals with no change observed in uric acid crystals.Significance.Overall, these results support the theory that bubbles are present on crystals and cause twinkling, which could be leveraged to improve twinkling for the detection of other pathological mineralizations.
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Affiliation(s)
- Eric Rokni
- Graduate Program in Acoustics, The Pennsylvania State University, 201E Applied Science Building, University Park, PA 16802, United States of America
| | - Julianna C Simon
- Graduate Program in Acoustics, The Pennsylvania State University, 201E Applied Science Building, University Park, PA 16802, United States of America
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Scott R, Lyburn I, Cornford E, Bouzy P, Stone N, Greenwood C, Bouybayoune I, Pinder S, Rogers K. Breast calcification micromorphology classification. Br J Radiol 2022; 95:20220485. [PMID: 35819921 PMCID: PMC9793474 DOI: 10.1259/bjr.20220485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES The importance of consistent terminology in describing the appearance of breast calcifications in mammography is well recognised. Imaging of calcifications using electron microscopy is a globally growing field of research. We therefore suggest that the time is ripe to develop a lexicon of terms for classifying the micromorphology of breast calcifications. METHODS Calcifications within a wide range of histological sections of breast tissue, both benign and malignant, were imaged by Scanning Electron Microscopy (SEM). These images were examined, and the micromorphology of calcifications present was grouped to create a classification system. RESULTS Based on the appearance of the calcifications observed, we propose five main categories for classification of the micromorphology of breast calcifications, namely, Dense Homogenous, Punctulate, Banded, Spongy and Aggregate. CONCLUSIONS Use of the descriptive categories outlined here will help to ensure consistency and comparability of published observations on the micromorphology of breast calcifications. ADVANCES IN KNOWLEDGE This is the first time a lexicon and classification system has been proposed for the micromorphology of breast calcifications, as observed by scanning electron microscopy of histological sections. This will facilitate comparability of observed relationships between micromorphology, mammographic appearance, chemistry and pathology.
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Affiliation(s)
- Robert Scott
- Cranfield Forensic Institute, Cranfield University, Swindon, United Kingdom
| | - Iain Lyburn
- Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, United Kingdom
| | - Eleanor Cornford
- Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, United Kingdom
| | - Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, United Kingdom
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, United Kingdom
| | - Charlene Greenwood
- School of Chemical and Physical Sciences, Keele University, Staffordshire, United Kingdom
| | - Ihsanne Bouybayoune
- School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Sarah Pinder
- School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Swindon, United Kingdom
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Colboc H, Bettuzzi T, Badrignans M, Bazin D, Boury A, Letavernier E, Frochot V, Tang E, Moguelet P, Ortonne N, de Prost N, Ingen-Housz-Oro S, Daudon M. Relationship between calcinosis cutis in epidermal necrolysis and caspofungin, a physicochemical investigation. CR CHIM 2022. [DOI: 10.5802/crchim.202] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Bazin D, Rabant M, Mathurin J, Petay M, Deniset-Besseau A, Dazzi A, Su Y, Hessou EP, Tielens F, Borondics F, Livrozet M, Bouderlique E, Haymann JP, Letavernier E, Frochot V, Daudon M. Cystinuria and cystinosis are usually related to L-cystine: is this really the case for cystinosis? A physicochemical investigation at micrometre and nanometre scale. CR CHIM 2022. [DOI: 10.5802/crchim.135] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Henry L, Bazin D, Policar C, Haymann JP, Daudon M, Frochot V, Mathonnet M. Characterization through scanning electron microscopy and μFourier transform infrared spectroscopy of microcalcifications present in fine needle aspiration smears. CR CHIM 2022. [DOI: 10.5802/crchim.187] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Bazin D, Bouderlique E, Tang E, Daudon M, Haymann JP, Frochot V, Letavernier E, Van de Perre E, Williams JC, Lingeman JE, Borondics F. Using mid infrared to perform investigations beyond the diffraction limits of microcristalline pathologies: advantages and limitation of Optical PhotoThermal IR spectroscopy. CR CHIM 2022. [DOI: 10.5802/crchim.196] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Colboc H, Moguelet P, Letavernier E, Frochot V, Bernaudin JF, Weil R, Rouzière S, Senet P, Bachmeyer C, Laporte N, Lucas I, Descamps V, Amode R, Brunet-Possenti F, Kluger N, Deschamps L, Dubois A, Reguer S, Somogyi A, Medjoubi K, Refregiers M, Daudon M, Bazin D. Pathologies related to abnormal deposits in dermatology: a physico-chemical approach. CR CHIM 2022. [DOI: 10.5802/crchim.153] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Lucas IT, Bazin D, Daudon M. Raman opportunities in the field of pathological calcifications. CR CHIM 2022. [DOI: 10.5802/crchim.110] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Bazin D, Daudon M, Frochot V, Haymann JP, Letavernier E. Foreword to microcrystalline pathologies: combining clinical activity and fundamental research at the nanoscale. CR CHIM 2022. [DOI: 10.5802/crchim.200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Bazin D, Lucas IT, Rouzière S, Elkaim E, Mocuta C, Réguer S, Reid DG, Mathurin J, Dazzi A, Deniset-Besseau A, Petay M, Frochot V, Haymann JP, Letavernier E, Verpont MC, Foy E, Bouderlique E, Colboc H, Daudon M. Profile of an “at cutting edge” pathology laboratory for pathological human deposits: from nanometer to in vivo scale analysis on large scale facilities. CR CHIM 2022. [DOI: 10.5802/crchim.199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Bazin D, Frochot V, Haymann JP, Letavernier E, Daudon M. Crystal size in μcrystalline pathologies and its clinical implication. CR CHIM 2022. [DOI: 10.5802/crchim.96] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Bazin D, Papoular RJ, Elkaim E, Weil R, Thiaudière D, Pisapia C, Ménez B, Hwang NS, Tielens F, Livrozet M, Bouderlique E, Haymann JP, Letavernier E, Hennet L, Frochot V, Daudon M. Whitlockite structures in kidney stones indicate infectious origin: a scanning electron microscopy and Synchrotron Radiation investigation. CR CHIM 2022. [DOI: 10.5802/crchim.80] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Petay M, Cherfan M, Bouderlique E, Reguer S, Mathurin J, Dazzi A, L’Heronde M, Daudon M, Letavernier E, Deniset-Besseau A, Bazin D. Multiscale approach to provide a better physicochemical description of women breast microcalcifications. CR CHIM 2022. [DOI: 10.5802/crchim.210] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Bazin D, Foy E, Reguer S, Rouzière S, Fayard B, Colboc H, Haymann JP, Daudon M, Mocuta C. The crucial contribution of X-ray fluorescence spectroscopy in medicine. CR CHIM 2022. [DOI: 10.5802/crchim.103] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Attina G, Mastrangelo S, Ruggiero A. The Role of Bisphosphonates in Childhood Diseases. BIOMEDICAL AND PHARMACOLOGY JOURNAL 2021; 14:1501-1507. [DOI: 10.13005/bpj/2251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Bisphosphonates have found in recent years an increasingly wide application in adult neoplastic diseases and osteoporosis. Their mechanism of action is based on the inhibition of bone turnover favouring, in particular, the mineralization and the reduction of the frequency of the remodelling cycles. The fields of application of bisphosphonates in paediatric age are constantly evolving although new trials are needed to define the schedule of administration and their long-term side effects.
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Affiliation(s)
- Giorgio Attina
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A.Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
| | - Stefano Mastrangelo
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A.Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
| | - Antonio Ruggiero
- Pediatric Oncology Unit, Fondazione Policlinico Universitario A.Gemelli IRCCS, Universita’ Cattolica Sacro Cuore, Rome, Italy
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Pilgrim MG, Marouf S, Fearn S, Csincsik L, Kortvely E, Knowles JC, Malek G, Thompson RB, Lengyel I. Characterization of Calcium Phosphate Spherical Particles in the Subretinal Pigment Epithelium-Basal Lamina Space in Aged Human Eyes. OPHTHALMOLOGY SCIENCE 2021; 1:100053. [PMID: 36247811 PMCID: PMC9559963 DOI: 10.1016/j.xops.2021.100053] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/21/2021] [Accepted: 08/12/2021] [Indexed: 11/17/2022]
Abstract
Purpose Micrometer-sized spherules formed of hydroxyapatite or whitlockite were identified within extracellular deposits that accumulate in the space between the basal lamina (BL) of retinal pigment epithelium (RPE) and the inner collagenous layer of Bruch's membrane (sub-RPE-BL space). This investigation aimed to characterize the morphologic features, structure, and distribution of these spherules in aged human eyes with and without clinical indications of age-related macular degeneration (AMD). Design Experimental study. Participants Five human eyes with varying degrees of sub-RPE-BL deposits were obtained from the University College London Institute of Ophthalmology and Moorfield's Eye Hospital Tissue Repository or the Advancing Sight Network. Two eyes were reported as having clinical indications of AMD (age, 76-87 years), whereas 3 were considered healthy (age, 69-91 years). Methods Cadaveric eyes with sub-RPE-BL deposits were embedded in paraffin wax and sectioned to a thickness of 4-10 μm. Spherules were identified and characterized using high-resolution scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy, and time-of-flight secondary ion mass spectroscopy. Main Outcome Measures High-resolution scanning electron micrographs of spherules, the size-frequency distribution of spherules including average diameter, and the distribution of particles across the central-peripheral axis. Elemental maps and time-of-flight secondary ion mass spectra also were obtained. Results The precipitation of spherules is ubiquitous across the central, mid-peripheral, and far-peripheral axis in aged human eyes. No significant difference was found in the frequency of spherules along this axis. However, statistical analysis indicated that spherules exhibited significantly different sizes in these regions. In-depth analysis revealed that spherules in the sub-RPE-BL space of eyes with clinical signs of AMD were significantly larger (median diameter, 1.64 μm) than those in healthy aged eyes (median diameter, 1.16 μm). Finally, spherules showed great variation in surface topography and internal structure. Conclusions The precipitation of spherules in the sub-RPE-BL space is ubiquitous across the central-peripheral axis in aged human eyes. However, a marked difference exists in the size and frequency of spherules in eyes with clinical signs of AMD compared to those without, suggesting that the size and frequency of spherules may be associated with AMD.
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Key Words
- AMD, age-related macular degeneration
- BL, basal lamina
- BrM, Bruch’s membrane
- C, Calcium
- Choroid
- Drusen
- EDX, Energy dispersive x-ray spectroscopy
- Ectopic calcification
- H, hydrogen
- Mg, Magnesium
- N, Nitrogen
- Na, sodium
- O, oxygen
- P, phosphorus
- RPE, retinal pigment epithelium
- Retina
- SEM, scanning electron microscopy
- Spherical particle
- Sub-retinal pigment epithelium-basal lamina deposit
- Sub-retinal pigment epithelium-basal lamina space
- Sub–retinal pigment epithelium
- ToF-SIMs, time of flight-secondary ion mass spectrometry
- sub-RPE–BL space, sub-retinal pigment epithelium-basal lamina space
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Affiliation(s)
- Matthew G. Pilgrim
- University College London Institute of Ophthalmology, London, United Kingdom
- Division of Biomaterials and Tissue Engineering, University College London Eastman Dental Institute, Royal Free Hospital, London, United Kingdom
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen’s University Belfast, Belfast, United Kingdom
| | - Salma Marouf
- Barts and The London School of Medicine and Dentistry, London, United Kingdom
| | - Sarah Fearn
- Department of Materials, Imperial College London, London, United Kingdom
| | - Lajos Csincsik
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen’s University Belfast, Belfast, United Kingdom
| | - Elod Kortvely
- Roche Pharma Research and Early Development, Immunology, Infectious Diseases and Ophthalmology (I20) Discovery and Translational Area, Roche Innovation Centre Basel, F. Hoffmann-La Roche, Ltd., Basel, Switzerland
| | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, University College London Eastman Dental Institute, Royal Free Hospital, London, United Kingdom
| | - Goldis Malek
- Department of Ophthalmology, Albert Eye Research Institute, and Department of Pathology, Duke University School of Medicine, Durham, North Carolina
| | - Richard B. Thompson
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Imre Lengyel
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen’s University Belfast, Belfast, United Kingdom
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22
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Qin W, Wan QQ, Ma YX, Wang CY, Wan MC, Ma S, Wang YR, Wang WR, Gu JT, Tay FR, Niu LN. Manifestation and Mechanisms of Abnormal Mineralization in Teeth. ACS Biomater Sci Eng 2021; 9:1733-1756. [PMID: 34436861 DOI: 10.1021/acsbiomaterials.1c00592] [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: 11/28/2022]
Abstract
Tooth biomineralization is a dynamic and complicated process influenced by local and systemic factors. Abnormal mineralization in teeth occurs when factors related to physiologic mineralization are altered during tooth formation and after tooth maturation, resulting in microscopic and macroscopic manifestations. The present Review provides timely information on the mechanisms and structural alterations of different forms of pathological tooth mineralization. A comprehensive study of these alterations benefits diagnosis and biomimetic treatment of abnormal mineralization in patients.
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Affiliation(s)
- Wen Qin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Qian-Qian Wan
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Yu-Xuan Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Chen-Yu Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Mei-Chen Wan
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Sai Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Yi-Rong Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Wan-Rong Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Jun-Ting Gu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
| | - Franklin R Tay
- College of Graduate Studies, Augusta University, Augusta, Georgia 30912, United States
| | - Li-Na Niu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P. R. China
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Radvar E, Griffanti G, Tsolaki E, Bertazzo S, Nazhat SN, Addison O, Mata A, Shanahan CM, Elsharkawy S. Engineered In vitro Models for Pathological Calcification: Routes Toward Mechanistic Understanding. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Elham Radvar
- Centre for Oral, Clinical and Translational Sciences Faculty of Dentistry, Oral and Craniofacial Sciences King's College London London SE1 1UL UK
| | - Gabriele Griffanti
- Department of Mining and Materials Engineering Faculty of Engineering McGill University Montreal QC H3A 0C5 Canada
| | - Elena Tsolaki
- Department of Medical Physics and Biomedical Engineering University College London London WC1E 6BT UK
| | - Sergio Bertazzo
- Department of Medical Physics and Biomedical Engineering University College London London WC1E 6BT UK
| | - Showan N. Nazhat
- Department of Mining and Materials Engineering Faculty of Engineering McGill University Montreal QC H3A 0C5 Canada
| | - Owen Addison
- Centre for Oral, Clinical and Translational Sciences Faculty of Dentistry, Oral and Craniofacial Sciences King's College London London SE1 1UL UK
| | - Alvaro Mata
- School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| | - Catherine M. Shanahan
- BHF Centre of Research Excellence Cardiovascular Division James Black Centre King's College London London SE1 1UL UK
| | - Sherif Elsharkawy
- Centre for Oral, Clinical and Translational Sciences Faculty of Dentistry, Oral and Craniofacial Sciences King's College London London SE1 1UL UK
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24
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Vekeman J, Torres J, David CE, Van de Perre E, Wissing KM, Letavernier E, Bazin D, Daudon M, Pozdzik A, Tielens F. In Search of an Efficient Complexing Agent for Oxalates and Phosphates: A Quantum Chemical Study. NANOMATERIALS 2021; 11:nano11071763. [PMID: 34361148 PMCID: PMC8308151 DOI: 10.3390/nano11071763] [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: 06/04/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 11/16/2022]
Abstract
Limiting gastrointestinal oxalate absorption is a promising approach to reduce urinary oxalate excretion in patients with idiopathic and enteric hyperoxaluria. Phosphate binders, that inhibit gastrointestinal absorption of dietary phosphate by the formation of easily excretable insoluble complexes, are commonly used as a treatment for hyperphosphatemia in patients with end-stage renal disease. Several of these commercially available phosphate binders also have affinity for oxalate. In this work, a series of metallic cations (Li+, Na+, Mg2+, Ca2+, Fe2+, Cu2+, Zn2+, Al3+, Fe3+ and La3+) is investigated on their binding affinity to phosphate and oxalate on one side and anionic species that could be used to administer the cationic species to the body on the other, e.g., acetate, carbonate, chloride, citrate, formate, hydroxide and sulphate. Through quantum chemical calculations, the aim is to understand the competition between the different complexes and propose possible new and more efficient phosphate and oxalate binders.
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Affiliation(s)
- Jelle Vekeman
- General Chemistry (ALGC), Materials Modelling Group, Vrije Universiteit Brussels, 1050 Brussels, Belgium
- Correspondence: (J.V.); (J.T.); (F.T.)
| | - Javier Torres
- Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito (USFQ), Diego de Robles y Vía Interoceánica, Quito 17-1200-841, Ecuador
- Instituto de Simulación Computacional (ISC-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito (USFQ), Diego de Robles y Vía Interoceánica, Quito 17-1200-841, Ecuador
- Correspondence: (J.V.); (J.T.); (F.T.)
| | - Cristina Eugenia David
- Kidney Stone Clinic, Nephrology Department, Centre Hospitalier Universitaire, Brugmann Hospital, 1020 Brussels, Belgium; (C.E.D.); (A.P.)
- Faculty of Medicine, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
| | - Els Van de Perre
- Nephrology Department, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, 1090 Brussels, Belgium; (E.V.d.P.); (K.M.W.)
| | - Karl Martin Wissing
- Nephrology Department, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, 1090 Brussels, Belgium; (E.V.d.P.); (K.M.W.)
| | - Emmanuel Letavernier
- Sorbonne Universités-UPMC Univ. Paris 06, UMR S 1155, 75020 Paris, France; (E.L.); (M.D.)
- INSERM, UMR S 1155, 75020 Paris, France
- Explorations Fonctionnelles Multidisciplinaires, AP-HP, Hôpital Tenon, 75020 Paris, France
| | - Dominique Bazin
- Institut de Chimie Physique, UMR CNRS 8000, Université Paris Saclay, Bâtiment 350, CEDEX, 91405 Orsay, France;
- Laboratoire de Physique des Solides, UMR CNRS 8502, Université Paris-Saclay, Bâtiment 510, CEDEX, 91405 Orsay, France
| | - Michel Daudon
- Sorbonne Universités-UPMC Univ. Paris 06, UMR S 1155, 75020 Paris, France; (E.L.); (M.D.)
- INSERM, UMR S 1155, 75020 Paris, France
- Explorations Fonctionnelles Multidisciplinaires, AP-HP, Hôpital Tenon, 75020 Paris, France
| | - Agnieszka Pozdzik
- Kidney Stone Clinic, Nephrology Department, Centre Hospitalier Universitaire, Brugmann Hospital, 1020 Brussels, Belgium; (C.E.D.); (A.P.)
- Faculty of Medicine, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
| | - Frederik Tielens
- General Chemistry (ALGC), Materials Modelling Group, Vrije Universiteit Brussels, 1050 Brussels, Belgium
- Correspondence: (J.V.); (J.T.); (F.T.)
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25
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The distribution of toxic metals in the human retina and optic nerve head: Implications for age-related macular degeneration. PLoS One 2020; 15:e0241054. [PMID: 33119674 PMCID: PMC7595417 DOI: 10.1371/journal.pone.0241054] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 10/07/2020] [Indexed: 01/14/2023] Open
Abstract
Objective Toxic metals are suspected to play a role in the pathogenesis of age-related macular degeneration. However, difficulties in detecting the presence of multiple toxic metals within the intact human retina, and in separating primary metal toxicity from the secondary uptake of metals in damaged tissue, have hindered progress in this field. We therefore looked for the presence of several toxic metals in the posterior segment of normal adult eyes using elemental bioimaging. Methods Paraffin sections of the posterior segment of the eye from seven tissue donors (age range 54–74 years) to an eye bank were examined for toxic metals in situ using laser ablation-inductively coupled plasma-mass spectrometry, a technique that detects multiple elements in tissues, as well as the histochemical technique of autometallography that demonstrates inorganic mercury, silver, and bismuth. No donor had a visual impairment, and no significant retinal abnormalities were seen on post mortem fundoscopy and histology. Results Metals found by laser ablation-inductively coupled plasma-mass spectrometry in the retinal pigment epithelium and choriocapillaris were lead (n = 7), nickel (n = 7), iron (n = 7), cadmium (n = 6), mercury (n = 6), bismuth (n = 5), aluminium (n = 3), and silver (n = 1). In the neural retina, mercury was present in six samples, and iron in one. Metals detected in the optic nerve head were iron (N = 7), mercury (N = 7), nickel (N = 4), and aluminium (N = 1). No gold or chromium was seen. Autometallography demonstrated probable inorganic mercury in the retinal pigment epithelium of one donor. Conclusion Several toxic metals are taken up by the human retina and optic nerve head. Injury to the retinal pigment epithelium from toxic metals could damage the neuroprotective functions of the retinal pigment epithelium and allow toxic metals to enter the outer neural retina. These findings support the hypothesis that accumulations of toxic metals in the retina could contribute to the pathogenesis of age-related macular degeneration.
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26
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Kravchik MV, Novikov IA, Subbot AM, Antonov AA, Petrov SY, Pakhomova NA. [Accumulation of sulfur and phosphorus in the eye's drainage system in primary open-angle glaucoma]. Vestn Oftalmol 2020; 136:5-14. [PMID: 33084273 DOI: 10.17116/oftalma20201360615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
PURPOSE To analyze the chemical composition of the sclera and trabecular meshwork in patients with primary open-angle glaucoma (POAG) and to assess the impact of corneal-compensated intraocular pressure (IOP) on the chemistry of the drainage area. MATERIAL AND METHODS Biopsy specimens of the trabecular meshwork (89 specimens) and sclera (41 specimens) obtained from patients with POAG on maximal medical therapy were analyzed to determine the content of certain chemical elements - carbon (C), nitrogen (N), oxygen (O), aluminum (Al), calcium (Ca), chlorine (Cl), potassium (K), magnesium (Mg), sodium (Na), phosphorus (P), silicon (Si) and sulfur (S). The elements were selected based on chemical structure target tissue and sensitivity of the method used for analysis. Visualization was performed using the «EVO LS 10» (Zeiss, Germany) scanning electron microscope (SEM), and the chemical composition was studied with the «Oxford-X-MAX-50» (Oxford, UK) energy-dispersive spectrometer (EDS). Statistical analysis was performed using the Spearman correlation. RESULTS The IOP of patients with POAG was found to have positive correlation with the total amount of S, P, and Ca in the trabecular meshwork. The accumulation of sulfur-containing compounds associated with pigment granules in trabecular meshwork's tissue was identified. A correlation was determined between the organic and inorganic (mineral) phosphorus content in the trabeculae, and the IOP values. The organic component of phosphorus was better represented than the mineral component in patients with increased IOP. CONCLUSION In patients with POAG, an increase in the IOP level causes the amount of S associated with pigment granules and the proportion of organic P to increase in the trabecular meshwork, which should be taken into account in the further search for drug therapy that would potentially affect pathologically altered tissue.
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Affiliation(s)
- M V Kravchik
- Research Institute of Eye Diseases, Moscow, Russia
| | - I A Novikov
- Research Institute of Eye Diseases, Moscow, Russia
| | - A M Subbot
- Research Institute of Eye Diseases, Moscow, Russia
| | - A A Antonov
- Research Institute of Eye Diseases, Moscow, Russia
| | - S Yu Petrov
- Research Institute of Eye Diseases, Moscow, Russia
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27
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De Santis S, Sotgiu G, Crescenzi A, Taffon C, Felici AC, Orsini M. On the chemical composition of psammoma bodies microcalcifications in thyroid cancer tissues. J Pharm Biomed Anal 2020; 190:113534. [PMID: 32841781 DOI: 10.1016/j.jpba.2020.113534] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 02/06/2023]
Abstract
Recently the knowledge of chemical composition of pathological mineralizations is an important topic extensively studied because it could give more in-depth information to understand pathologies themselves and to improve prevention methods. In this work, psammoma bodies (PBs) microcalcifications in thyroid cancer tissue are investigated by different and complementary analytical methods as: micro-Fourier transformed spectroscopy, X-ray fluorescence spectroscopy, Inductively Coupled plasma Optical Emission Spectroscopy (ICP-OES) and scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy imaging (EDX). For the first time the micro-FTIR analysis of the only inorganic phase isolated from PBs was reported. Signals of the recorded spectrum showed that the main component of the calcifications is the amorphous carbonated calcium phosphate, and the IR spectrum of thyroid PBs is strongly consistent with that of PBs in human ovarian tumors. The XRF and the ICP analysis detected also the presence of iron ad zinc in thyroid PBs. These results are validated by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy imaging (EDX) carried out on tissue samples of the papillary thyroid carcinoma. By these analytical methods magnesium and sodium were detected within PBs while the presence of iron was confirmed by the Perls test. Summarizing the results of applied analytical methods, the main detected elements within the thyroid psammoma bodies are Ca, P, Mg, Na, Fe and Zn. Magnesium and sodium are found in malignant breast cancer microcalcifications, thus they seem correlated to neoplastic transformation. The Fe and Zn elements could give information about the origin of these pathological microcalcifications.
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Affiliation(s)
- Serena De Santis
- Department of Engineering, Roma Tre University, via Vito Volterra 62, Roma Italy.
| | - Giovanni Sotgiu
- Department of Engineering, Roma Tre University, via Vito Volterra 62, Roma Italy
| | - Anna Crescenzi
- Pathology Unit, University Hospital Campus Bio-Medico, Rome Italy
| | - Chiara Taffon
- Pathology Unit, University Hospital Campus Bio-Medico, Rome Italy
| | - Anna Candita Felici
- Basic and Applied Sciences for Engineering, Sapienza University, Via A. Scarpa 16, Roma Italy
| | - Monica Orsini
- Department of Engineering, Roma Tre University, via Vito Volterra 62, Roma Italy
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