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Laputková G, Talian I, Schwartzová V. Medication-Related Osteonecrosis of the Jaw: A Systematic Review and a Bioinformatic Analysis. Int J Mol Sci 2023; 24:16745. [PMID: 38069068 PMCID: PMC10706386 DOI: 10.3390/ijms242316745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/23/2023] [Accepted: 11/23/2023] [Indexed: 12/18/2023] Open
Abstract
The objective was to evaluate the current evidence regarding the etiology of medication-related osteonecrosis of the jaw (MRONJ). This study systematically reviewed the literature by searching PubMed, Web of Science, and ProQuest databases for genes, proteins, and microRNAs associated with MRONJ from the earliest records through April 2023. Conference abstracts, letters, review articles, non-human studies, and non-English publications were excluded. Twelve studies meeting the inclusion criteria involving exposure of human oral mucosa, blood, serum, saliva, or adjacent bone or periodontium to anti-resorptive or anti-angiogenic agents were analyzed. The Cochrane Collaboration risk assessment tool was used to assess the quality of the studies. A total of 824 differentially expressed genes/proteins (DEGs) and 22 microRNAs were extracted for further bioinformatic analysis using Cytoscape, STRING, BiNGO, cytoHubba, MCODE, and ReactomeFI software packages and web-based platforms: DIANA mirPath, OmicsNet, and miRNet tools. The analysis yielded an interactome consisting of 17 hub genes and hsa-mir-16-1, hsa-mir-21, hsa-mir-23a, hsa-mir-145, hsa-mir-186, hsa-mir-221, and hsa-mir-424. A dominance of cytokine pathways was observed in both the cluster of hub DEGs and the interactome of hub genes with dysregulated miRNAs. In conclusion, a panel of genes, miRNAs, and related pathways were found, which is a step toward understanding the complexity of the disease.
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Affiliation(s)
- Galina Laputková
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P. J. Šafárik, Trieda SNP 1, 040 11 Košice, Slovakia;
| | - Ivan Talian
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P. J. Šafárik, Trieda SNP 1, 040 11 Košice, Slovakia;
| | - Vladimíra Schwartzová
- Clinic of Stomatology and Maxillofacial Surgery, Faculty of Medicine, University of P. J. Šafárik and Louis Pasteur University Hospital, 041 90 Košice, Slovakia;
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Patel V, Young H, Mellor A, Sproat C, Kwok J, Cape A, Mahendran K. The use of liquid formulation pentoxifylline and vitamin E in both established and as a prophylaxis for dental extractions "at risk" of osteoradionecrosis. Oral Surg Oral Med Oral Pathol Oral Radiol 2023; 136:404-409. [PMID: 37316424 DOI: 10.1016/j.oooo.2023.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/08/2023] [Accepted: 02/19/2023] [Indexed: 02/27/2023]
Abstract
BACKGROUND Osteoradionecrosis (ORN) of the jaws remains one of the most debilitating complications of radiotherapy (RT) in patients with head and neck cancer (HNC). Liquid pentoxifylline and vitamin E (PVe) presents an alternative formulation to tablets for patients with dysphagia or enteric feeding. OBJECTIVE This study aimed to assess the clinical outcomes of using a liquid formulation of PVe for both established ORN and as a prophylaxis to avoid its occurrence after dental extractions. A secondary objective was to determine patient-reported side effects in relation to the liquid formulation of PVe. STUDY DESIGN The clinical records of 111 patients with HNC who were prescribed liquid PVe were reviewed retrospectively (66 with established ORN and 45 as prophylaxis before an invasive dental procedure). RESULTS In established ORN, 44% healed, and 41% were stable. In the prophylaxis group, 96% of surgical sites healed completely, with 4% (n = 2) developing ORN. Most patients (89%) were able to tolerate liquid PVe. Of the 11% (n = 12) who could not tolerate this regime, the most commonly reported side effect was gastric irritation (n = 5/12), whereas no more than 1 patient reported dizziness, malaise, and bleeding. CONCLUSIONS This retrospective review suggests that liquid PVe is efficacious for both established ORN and as a prophylaxis. Side effects reported were similar to those recognized for the tablet formulation.
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Affiliation(s)
- Vinod Patel
- Oral Surgery Department, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom.
| | - Helen Young
- Oral Surgery Department, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Amy Mellor
- Oral Surgery Department, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Chris Sproat
- Oral Surgery Department, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Jerry Kwok
- Oral Surgery Department, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Angela Cape
- King's College London, London, United Kingdom
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Wali R, Sacco R, Singh G, Patel V. The clinical effect of radiotherapy on pulpal microvasculature: a systematic review. Br Dent J 2022:10.1038/s41415-022-5301-8. [PMID: 36473977 DOI: 10.1038/s41415-022-5301-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 07/29/2022] [Indexed: 12/12/2022]
Abstract
Introduction/objectives Radiotherapy (RT) has a detrimental effect on the histomorphology of oral tissues. Patients undergoing RT are at risk of developing macrovascular and microvascular changes, which can lead to significant clinical consequences. Despite advances in RT delivery systems, radiation injury remains a modern-day clinical problem. The aim of this systematic review is to investigate the available evidence regarding the impact of RT to the dental pulp and the clinical manifestations of these effects.Data and sources A multi-database search (PubMed, Medline, Embase and CINAHL) was performed to identify related papers published from inception until November 2021. An additional manual search was performed to identify further articles. The data extracted from relevant papers were analysed according to the outcomes selected in this review.Study selection The search generated seven articles eligible for analysis with a total of 2,709 teeth included. RT dose exposure ranged from 30-71.2 Gray with a common finding that RT decreases the number of teeth responding to pulp sensibility testing.Conclusions Knowledge related to the impact of RT on dental pulp is limited and based on weak evidence and a low-level quality of studies. Future studies should incorporate exact RT doses to the teeth and use replicable pulpal testing methods. Understanding the pulpal status post-RT remains an important consideration as dental extractions should be avoided in this cohort due to the risk of osteoradionecrosis.
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Affiliation(s)
- Rana Wali
- Oral Surgery Registrar, Oral Surgery Department, Guy´s and St Thomas´ Hospital, London, UK
| | - Roberto Sacco
- Clinical Lecturer, Division of Dentistry, School of Medical Sciences, Oral Surgery Department, University of Manchester, Manchester, UK; 3Clinical Teacher, Oral Surgery Department, King´s College Hospital, London, UK
| | - Gurpreet Singh
- Managed Clinical Network Chair, Restorative Dentistry, NHS England and NHS Improvement East of England, UK
| | - Vinod Patel
- Oral Surgery Consultant, Oral Surgery Department, Guy´s and St Thomas´ Hospital, London, UK.
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Ruggiero SL, Dodson TB, Aghaloo T, Carlson ER, Ward BB, Kademani D. American Association of Oral and Maxillofacial Surgeons' Position Paper on Medication-Related Osteonecrosis of the Jaws-2022 Update. J Oral Maxillofac Surg 2022; 80:920-943. [PMID: 35300956 DOI: 10.1016/j.joms.2022.02.008] [Citation(s) in RCA: 263] [Impact Index Per Article: 131.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/15/2022] [Accepted: 02/15/2022] [Indexed: 12/13/2022]
Abstract
Strategies for management of patients with, or at risk for, medication-related osteonecrosis of the jaws (MRONJ) - formerly referred to as bisphosphonate-related osteonecrosis of the jaws (BRONJ)-were set forth in the American Association of Oral and Maxillofacial Surgeons (AAOMS) position papers in 2007, 2009 and 2014. The position papers were developed by a committee appointed by the AAOMS Board of Trustees and comprising clinicians with extensive experience in caring for these patients, as well as clinical and basic science researchers. The knowledge base and experience in addressing MRONJ continues to evolve and expand, necessitating modifications and refinements to the previous position papers. Three members of the AAOMS Committee on Oral, Head, and Neck Oncologic and Reconstructive Surgery (COHNORS) and three authors of the 2014 position paper were appointed to serve as a working group to analyze the current literature and revise the guidance as indicated to reflect current knowledge in this field. This update contains revisions to diagnosis and management strategies and highlights the current research status. AAOMS maintains that it is vitally important for this information to be disseminated to other relevant healthcare professionals and organizations.
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Affiliation(s)
- Salvatore L Ruggiero
- Clinical Professor, Division of Oral and Maxillofacial Surgery, Stony Brook School of Dental Medicine, Hofstra North Shore-LIJ School of Medicine, New York Center for Orthognathic and Maxillofacial Surgery, Lake Success, NY.
| | - Thomas B Dodson
- Professor and Chair, University of Washington School of Dentistry, Department of Oral and Maxillofacial Surgery, Seattle, Wash
| | - Tara Aghaloo
- Professor, Oral and Maxillofacial Surgery, UCLA School of Dentistry, Los Angeles, Calif
| | - Eric R Carlson
- Professor and Kelly L. Krahwinkel Endowed Chairman, Department of Oral and Maxillofacial Surgery, University of Tennessee Graduate School of Medicine, Knoxville, Tenn
| | - Brent B Ward
- Chalmers J Lyons Professor of Oral and Maxillofacial Surgery, Associate Professor of Dentistry, Chair of the Department of Oral and Maxillofacial Surgery/Hospital Dentistry in the School of Dentistry and Associate Professor of Surgery for the Medical School, University of Michigan Hospital, Ann Arbor, Mich
| | - Deepak Kademani
- Chief of Staff North Memorial Health, Fellowship Director, Oral/Head and Neck Oncologic and Reconstructive Surgery Attending Surgeon, North Memorial Health and the University of Minnesota. Private practice, Minnesota Oral and Facial Surgery and Minnesota Head and Neck Surgery, Minneapolis, Minn
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Patel V, Kwok J, Burke M, Urbano TG, Fenlon M. Should the HPV positive oropharyngeal cancer patient be considered for a two-stage dental assessment for their radiation treatment? Radiother Oncol 2021; 164:232-235. [PMID: 34624407 DOI: 10.1016/j.radonc.2021.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 09/15/2021] [Accepted: 09/20/2021] [Indexed: 10/20/2022]
Abstract
Patients due to commence head and neck radiation treatment are expected to undergo a dental assessment and be deemed 'dentally fit'. Though this intervention is welcomed by the dental fraternity it is not without its challenges especially in human papilloma virus (HPV) related oropharyngeal cancer (OPC) which has seen a phenomenal rise over the past decade. This perspective piece presents these challenges and proposes a potential adaption of the dental assessment for HPV OPC patients though not necessarily exclusive to this tumour sub-site.
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Affiliation(s)
- Vinod Patel
- Guy's & St Thomas' Hospital Oral Surgery Dept, London, UK.
| | - Jerry Kwok
- Guy's & St Thomas' Hospital Oral Surgery Dept, London, UK.
| | - Mary Burke
- Guy's & St Thomas' Hospital Sedation & Special Care Dept, London, UK.
| | - Teresa Guerrero Urbano
- Guy's & St Thomas' NHS Trust and King's College London, Oncology Department, London, UK.
| | - Michael Fenlon
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK.
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Samani M, Beheshti S, Cheng H, Sproat C, Kwok J, Patel V. Prophylactic pentoxifylline and vitamin E use for dental extractions in irradiated patients with head and neck cancer. Oral Surg Oral Med Oral Pathol Oral Radiol 2021; 133:e63-e71. [PMID: 34753695 DOI: 10.1016/j.oooo.2021.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/14/2021] [Accepted: 08/11/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Osteoradionecrosis (ORN) of the jaw is preceded by dental extractions in up to 10% of cases. We present a case series of post-radiotherapy patients undergoing dental extractions who have received the prophylactic antifibrotic agents pentoxifylline and vitamin E (PVe) to prevent ORN. STUDY DESIGN A retrospective review was conducted of 219 patients with head and neck cancer (HNC) undergoing 1079 dental extractions between 2009 and 2020. Data regarding oncological treatment, prophylactic drug regimen, dental history, and clinical outcome was collected. RESULTS Twelve patients developed ORN at 17 extraction sites (ORN rates, 1.6% and 5.5% at tooth level and patient level, respectively). PVe regimen compliance significantly decreased ORN rates at the patient level (3.4% vs 11.5%; P < .03) and the tooth level (1.0% vs 3.5%; P < .01) compared with no PVe. Regimen compliance significantly reduced ORN rates in patients with oropharyngeal cancer (P < .01); in those with mandibular (P < .005) molar (P < .003), and flapless extractions (P < .04); in patients with radiation regions >40 Gy (P < .0009); and in those who underwent primary closure (P < .03). Machine learning analysis identified almost all these factors as influential at a tooth level for ORN. CONCLUSIONS PVe regimen compliance decreased dental extraction ORN rates more than the literature base rates of 7% at the patient level and 2% at the tooth level. Given its success in managing existing ORN, PVe could be extended prophylactically for dental extractions in irradiated patients with head and neck cancer.
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Affiliation(s)
- Meera Samani
- Associate Specialist (Oral Surgery), Oral Surgery Department, Guy's Dental Hospital, London, United Kingdom
| | - Shahryar Beheshti
- Speciality Dentist (Oral Surgery), Oral Surgery Department, Guy's Dental Hospital, London, United Kingdom
| | - Hilary Cheng
- Dental Core Trainee (Oral Surgery), Oral Surgery Department, Guy's Dental Hospital, London, United Kingdom
| | - Chris Sproat
- Consultant (Oral Surgery), Oral Surgery Department, Guy's Dental Hospital, London, United Kingdom
| | - Jerry Kwok
- Consultant (Oral Surgery), Oral Surgery Department, Guy's Dental Hospital, London, United Kingdom
| | - Vinod Patel
- Consultant (Oral Surgery), Oral Surgery Department, Guy's Dental Hospital, London, United Kingdom.
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Machine Learning Approaches for Predicting Bisphosphonate-Related Osteonecrosis in Women with Osteoporosis Using VEGFA Gene Polymorphisms. J Pers Med 2021; 11:jpm11060541. [PMID: 34200782 PMCID: PMC8230421 DOI: 10.3390/jpm11060541] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/09/2021] [Accepted: 06/09/2021] [Indexed: 01/15/2023] Open
Abstract
Objective: This nested case–control study aimed to investigate the effects of VEGFA polymorphisms on the development of bisphosphonate-related osteonecrosis of the jaw (BRONJ) in women with osteoporosis. Methods: Eleven single nucleotide polymorphisms (SNPs) of the VEGFA were assessed in a total of 125 patients. Logistic regression was performed for multivariable analysis. Machine learning algorithms, namely, fivefold cross-validated multivariate logistic regression, elastic net, random forest, and support vector machine, were developed to predict risk factors for BRONJ occurrence. Area under the receiver-operating curve (AUROC) analysis was conducted to assess clinical performance. Results: The VEGFA rs881858 was significantly associated with BRONJ development. The odds of BRONJ development were 6.45 times (95% CI, 1.69–24.65) higher among carriers of the wild-type rs881858 allele compared with variant homozygote carriers after adjusting for covariates. Additionally, variant homozygote (GG) carriers of rs10434 had higher odds than those with wild-type allele (OR, 3.16). Age ≥ 65 years (OR, 16.05) and bisphosphonate exposure ≥ 36 months (OR, 3.67) were also significant risk factors for BRONJ occurrence. AUROC values were higher than 0.78 for all machine learning methods employed in this study. Conclusion: Our study showed that the BRONJ occurrence was associated with VEGFA polymorphisms in osteoporotic women.
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Bastos P, Carpentier G, Patel V, Papy-Garcia D, Watson T, Cook R. Real-Time Optical Vascular Imaging, a new method for the diagnosis and monitoring of oral diseases. J Microsc 2020; 288:73-86. [PMID: 33119132 DOI: 10.1111/jmi.12975] [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] [Received: 08/31/2020] [Accepted: 10/23/2020] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Real-Time Optical Vascular Imaging (RTOVI) is a technology developed in the Centre for Oral Clinical & Translational Sciences, within the Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, that allows rapid and preparation free, in vivo imaging of the microvascular anatomy of the human oral cavity. Microvascular changes are known to be related to disease subtypes, in particular cancer. This makes in vivo microvascular examination clinically valuable. However, at present there is lack of any analytical method able to objectively assess microvascular morphology images. DISCUSSION The assessment of microvascular morphology based on a subjective evaluation was proven to be unreliable. There was a need to develop a software-based analysis for in vivo microvascular images to support the validation of RTOVI. This paper reviews the authors work to develop and test an automated microvascular analysis method for RTOVI based on ImageJ, an open-source software. This allowed to determined which parameters offered a more robust mathematical representation of the microvascular anatomy of the gingival margin, such as the mean area per capillary and mean aspect ratio. However, in vivo microvascular images from elsewhere within the oral cavity posed a bigger challenge to the analysis procedure due to the microvascular architectural complexity and poorer contrast. Angiogenesis Analyzer, a well-known ImageJ plugin used for the quantification of in vitro microvascular images, is under development in collaboration with the University of Paris Est Créteil. The aim of this work is to obtain an automated analysis method for in vivo microvascular images able to offer a solid foundation for the diagnostic potential of RTOVI and subsequent clinical integration of this technology. CONCLUSION An automated analysis method for in vivo microvascular images is paramount before any attempt to clinically validate RTOVI. Our initial work of testing a software-based analysis demonstrated the effectiveness of some parameters, which is valuable for future work, and led us to move into a more sophisticated method involving customising the Angiogenesis Analyzer plugin. This is an essential step, aiming to extend the potential of in vivo microscopy with the clinical integration of RTOVI. LAY DESCRIPTION This article summarises the initial research work done in the field on in vivo microvascular imaging aiming to develop a technique for the diagnosis of oral diseases based on the shape of small blood vessels found just below the surface of the "skin" inside the mouth. This offers the potential to examine lesions without the need to take a sample (biopsy/cutting tissue) to observe it microscopically. This ultimately offers a potential to accelerate diagnostic decision making, avoid unpleasant and often deterrent surgical procedures and reducing diagnostic laboratory time and cost burdens. However, in order to assess images of small blood vessels obtained in clinic, we needed to develop and test a software-based analysis to avoid the subjective human interpretation, known not to work. This article describes the authors journey to achieve an automated and sophisticated analysis method unique in the world for in vivo microvascular images derived from real-time optical vascular imaging.
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Affiliation(s)
- P Bastos
- Faculty of Dentistry, Oral & Craniofacial Sciences, The Centre for Oral, Clinical and Translational Sciences, Guy's Campus, King's College London, London, UK
| | - G Carpentier
- Laboratoire Gly-CRRET Faculté des Sciences et Technologie, Université Paris-Est Créteil Val de Marne, Paris, France
| | - V Patel
- Oral Surgery, Guys & St Thomas' NHS Foundation Trust, London, UK
| | - D Papy-Garcia
- Laboratoire Gly-CRRET Faculté des Sciences et Technologie, Université Paris-Est Créteil Val de Marne, Paris, France
| | - T Watson
- Faculty of Dentistry, Oral & Craniofacial Sciences, The Centre for Oral, Clinical and Translational Sciences, Guy's Campus, King's College London, London, UK
| | - R Cook
- Faculty of Dentistry, Oral & Craniofacial Sciences, The Centre for Oral, Clinical and Translational Sciences, Guy's Campus, King's College London, London, UK
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Gkouveris I, Hadaya D, Soundia A, Bezouglaia O, Chau Y, Dry SM, Pirih FQ, Aghaloo TL, Tetradis S. Vasculature submucosal changes at early stages of osteonecrosis of the jaw (ONJ). Bone 2019; 123:234-245. [PMID: 30953717 PMCID: PMC6763394 DOI: 10.1016/j.bone.2019.03.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 03/16/2019] [Accepted: 03/22/2019] [Indexed: 02/09/2023]
Abstract
Osteonecrosis of the jaw (ONJ), a rare, but potentially severe side effect of anti-resorptive medications, presents as exposed bone in the maxillofacial region lasting for at least 8 weeks. While clinical experience and animal models concur in finding that systemic antiresorptive treatment in conjunction with local risk factors, such as tooth extraction or dental disease may lead to ONJ development, the subclinical molecular changes that precede bone exposure remain poorly understood. The identification of these changes is not only important in understanding disease pathophysiology, but could provide potential for treatment development. Here, we evaluated the early stages of ONJ utilizing a model of experimental periodontitis (EP) in mice treated with two different types of antiresorptives, targeting potential changes in vasculature, hypoxia, oxidative stress, and apoptosis. Antiresorptive treatment in animals with EP increased levels of empty osteocytic lacunae and increased ONJ prevalence compared to Veh animals. The arteriole and venule network seen around EP areas was diminished in animals treated with antiresorptives. Higher levels of vascular endothelial growth factor A (VEGF-A) and vascular cell adhesion protein-1 (VCAM-1) were observed 1-week following EP in treated animals. Finally, levels of hypoxia, oxidative stress, and apoptosis remained high in antiresorptive treated animals with EP through the duration of the experiment. Together, our data point to subclinical vasculature organizational disturbances that subsequently affect levels of hypoxia, oxidative stress, and apoptosis in the area of developing ONJ.
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Affiliation(s)
- Ioannis Gkouveris
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Danny Hadaya
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Akrivoula Soundia
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Olga Bezouglaia
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Yee Chau
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Sarah M Dry
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Flavia Q Pirih
- Division of Constitutive and Regenerative Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Tara L Aghaloo
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA.
| | - Sotirios Tetradis
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA.
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