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Higashida H, Oshima Y, Yamamoto Y. Oxytocin transported from the blood across the blood-brain barrier by receptor for advanced glycation end-products (RAGE) affects brain function related to social behavior. Peptides 2024; 178:171230. [PMID: 38677620 DOI: 10.1016/j.peptides.2024.171230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/03/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
Oxytocin (OT) is a neuropeptide that primarily functions as a hormone controlling female reproductive processes. Since numerous recent studies have shown that single and repetitive administrations of OT increase trust, social interaction, and maternal behaviors in humans and animals, OT is considered a key molecule that regulates social memory and behavior. Furthermore, OT binds to receptors for advanced glycation end-products (RAGE), and it has been demonstrated that loss of RAGE in the brain vascular endothelial cells of mice fails to increase brain OT concentrations following peripheral OT administration. This leads to the hypothesis that RAGE is involved in the direct transport of OT, allowing it access to the brain by transporting it across the blood-brain barrier; however, this hypothesis is only based on limited evidence. Herein, we review the recent results related to this hypothesis, such as the mode of transport of OT in the blood circulation to the brain via different forms of RAGE, including membrane-bound full-length RAGE and soluble RAGE. We further review the modulation of brain function and social behavior, which seem to be mediated by RAGE-dependent OT. Overall, this review mostly confirms that RAGE enables the recruitment of circulating OT to the brain, thereby influencing social behavior. The requirement for further studies considering the physiological aspects of RAGE is also discussed.
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Affiliation(s)
- Haruhiro Higashida
- Department of Basic Research on Social Recognition and Memory, Research Center for Child Mental Development, Kanazawa University, Kanazawa 920-8640, Japan.
| | - Yu Oshima
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan
| | - Yasuhiko Yamamoto
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan
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Rojas A, Lindner C, Schneider I, Gonzalez I, Uribarri J. The RAGE Axis: A Relevant Inflammatory Hub in Human Diseases. Biomolecules 2024; 14:412. [PMID: 38672429 PMCID: PMC11048448 DOI: 10.3390/biom14040412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
In 1992, a transcendental report suggested that the receptor of advanced glycation end-products (RAGE) functions as a cell surface receptor for a wide and diverse group of compounds, commonly referred to as advanced glycation end-products (AGEs), resulting from the non-enzymatic glycation of lipids and proteins in response to hyperglycemia. The interaction of these compounds with RAGE represents an essential element in triggering the cellular response to proteins or lipids that become glycated. Although initially demonstrated for diabetes complications, a growing body of evidence clearly supports RAGE's role in human diseases. Moreover, the recognizing capacities of this receptor have been extended to a plethora of structurally diverse ligands. As a result, it has been acknowledged as a pattern recognition receptor (PRR) and functionally categorized as the RAGE axis. The ligation to RAGE leads the initiation of a complex signaling cascade and thus triggering crucial cellular events in the pathophysiology of many human diseases. In the present review, we intend to summarize basic features of the RAGE axis biology as well as its contribution to some relevant human diseases such as metabolic diseases, neurodegenerative, cardiovascular, autoimmune, and chronic airways diseases, and cancer as a result of exposure to AGEs, as well as many other ligands.
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Affiliation(s)
- Armando Rojas
- Biomedical Research Laboratories, Faculty of Medicine, Catholic University of Maule, Talca 34600000, Chile; (A.R.); (I.G.)
| | - Cristian Lindner
- Department of Radiology, Faculty of Medicine, University of Concepción, Concepción 4030000, Chile;
| | - Ivan Schneider
- Centre of Primary Attention, South Metropolitan Health Service, Santiago 3830000, Chile;
| | - Ileana Gonzalez
- Biomedical Research Laboratories, Faculty of Medicine, Catholic University of Maule, Talca 34600000, Chile; (A.R.); (I.G.)
| | - Jaime Uribarri
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10021, USA
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Gao B, Wu J, Lv K, Shen C, Yao H. Visualized analysis of hotspots and frontiers in diabetes-associated periodontal disease research: a bibliometric study. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:1305. [PMID: 36660670 PMCID: PMC9843370 DOI: 10.21037/atm-22-2443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 10/14/2022] [Indexed: 12/24/2022]
Abstract
Background Diabetes-associated periodontal disease is caused by diabetes-enhanced host immune-inflammatory responses to bacterial insult. An increasing number of papers related to diabetes-associated periodontal disease have been published. This study analyzed research on diabetes-associated periodontal disease with bibliometrics methods. The objective of this study was to identify hotspots and frontiers in the diabetes-associated periodontal disease research field. Methods Publications were extracted from the Web of Science core collection database, and the document types included were limited to articles and reviews. The bibliometric analysis software CiteSpace5 was used to analyze the number of articles, research fields, countries/regions, institutions, authors, keywords, and other information. Outcomes were visualized to analyze the hotspots and research frontiers of diabetes-associated periodontal disease. Results A total of 3,572 articles were retrieved. Among the research fields, dentistry, oral surgery, and medicine accounted for the highest proportion of publications, and public, environmental, and occupational health had the highest betweenness centrality. The number of publications from the United States ranked first among all the countries, while Columbia University ranked first among all the institutions. Global cooperation was not frequent. Keyword analysis showed that inflammatory pathways were the hotspots. Burst words analysis indicated that early prevention was a research frontier. Conclusions The bibliometric method helped identify research hotspots and frontiers. Inflammatory pathways were hotspots, and early prevention was a frontier in diabetes-associated periodontal disease.
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Advanced Glycation End Product (AGE) and Soluble Receptor of AGE (sRAGE) Levels in Relation to Periodontitis Severity and as Putative 3-Year Outcome Predictors in Patients Undergoing Coronary Artery Bypass Grafting (CABG). J Clin Med 2022; 11:jcm11144105. [PMID: 35887868 PMCID: PMC9317367 DOI: 10.3390/jcm11144105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/22/2022] [Accepted: 07/13/2022] [Indexed: 12/03/2022] Open
Abstract
Tissue concentrations of advanced glycation end product (AGE) and peripheral soluble receptor of AGE (sRAGE) levels may be associated with periodontitis severity. Both parameters and periodontitis might serve as outcome predictors for patients undergoing coronary artery bypass grafting (CABG). This study aimed to investigate possible associations between periodontitis and AGE/sRAGE. Ultimately, we wanted to examine whether AGE, sRAGE, and severe periodontitis are associated with the incidence of new cardiovascular events within 3 years of follow-up after CABG. Ninety-five patients with coronary vascular disease (CVD) (age 69 years, 88.3% males) needing CABG surgery were included. Periodontal diagnosis was made according to the guidelines of the “Centers for Disease Control and Prevention (CDC)” (2007) and staged according to the new classification of periodontal diseases (2018). AGE tissue concentrations were assessed as skin autofluorescence (sAF). sRAGE levels were determined by using a commercially available enzyme-linked immunoabsorbance assay (ELISA) kit. Univariate and multivariate baseline and survival analyses were carried out with Mann–Whitney U test, Chi² test, Kaplan–Meier curves with Log-Rank test, and logistic and Cox regression. sAF was identified as an independent risk indicator for severe periodontitis with respect to the cofactors age, gender, plaque index, and diabetes (adjusted odds ratio [OR] = 2.9, p = 0.028). The degree of subgingival inflammation assessed as a percentage of sites with bleeding on probing (BOP) was inversely correlated with sRAGE concentration (r = −0.189, p = 0.034). Both sAF (Hazard Ratio [HR] = 2.4, p = 0.004) and sRAGE (HR = 1.9, p = 0.031) increased the crude risk for new adverse events after CABG. The occurrence of severe periodontitis trends towards a higher risk for new cardiovascular events (HR = 1.8, p = 0.115). Applying multivariate Cox regression, only peripheral arterial disease (adjusted HR = 2.7, p = 0.006) and history of myocardial infarction (adjusted HR = 2.8, p = 0.010) proved to be independent risk factors for cardiovascular outcome. We conclude that sAF may represent a new, independent risk indicator for severe periodontitis. In contrast, sAF, sRAGE, and severe periodontitis were not independent prognostic factors for postoperative outcome in patients undergoing CABG.
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Chopra A, Jayasinghe TN, Eberhard J. Are Inflamed Periodontal Tissues Endogenous Source of Advanced Glycation End-Products (AGEs) in Individuals with and without Diabetes Mellitus? A Systematic Review. Biomolecules 2022; 12:biom12050642. [PMID: 35625570 PMCID: PMC9138899 DOI: 10.3390/biom12050642] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/14/2022] [Accepted: 04/27/2022] [Indexed: 12/14/2022] Open
Abstract
Advanced glycation end-products (AGEs) are heterogeneous compounds formed when excess sugars condense with the amino groups of nucleic acids and proteins. Increased AGEs are associated with insulin resistance and poor glycemic control. Recently, inflamed periodontal tissues and certain oral bacteria were observed to increase the local and systemic AGE levels in both normoglycemic and hyperglycemic individuals. Although hyperglycemia induced AGE and its effect on the periodontal tissues is known, periodontitis as an endogenous source of AGE formation is not well explored. Hence, this systematic review is aimed to explore, for the first time, whether inflamed periodontal tissues and periodontal pathogens have the capacity to modulate AGE levels in individuals with or without T2DM and how this affects the glycemic load. Six electronic databases were searched using the following keywords: (Periodontitis OR Periodontal disease OR Periodontal Inflammation) AND (Diabetes mellitus OR Hyperglycemia OR Insulin resistance) AND Advanced glycation end products. The results yielded 1140 articles, of which 13 articles were included for the review. The results showed that the mean AGE levels in gingival crevicular fluid was higher in individuals with diabetes mellitus and periodontitis (521.9 pg/mL) compared to healthy individuals with periodontitis (234.84 pg/mL). The serum AGE levels in normoglycemic subjects having periodontitis was higher compared to those without periodontitis (15.91 ng/mL vs. 6.60 ng/mL). Tannerella forsythia, a common gram-negative anaerobe periodontal pathogen in the oral biofilm, was observed to produce methylglyoxal (precursor of AGE) in the gingival tissues. Increased AGE deposition and activate of AGE receptors was noted in the presence of periodontitis in both normoglycemic and hyperglycemic individuals. Hence, it can be concluded that periodontitis can modulate the local and systemic levels of AGE levels even in absence of hyperglycemia. This explains the bidirectional relationship between periodontitis and development of prediabetes, incident diabetes, poor glycemic control, and insulin resistance.
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Affiliation(s)
- Aditi Chopra
- Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal 576104, India
- Correspondence:
| | - Thilini N. Jayasinghe
- The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (T.N.J.); (J.E.)
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Joerg Eberhard
- The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (T.N.J.); (J.E.)
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
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Plemmenos G, Piperi C. Pathogenic Molecular Mechanisms in Periodontitis and Peri-Implantitis: Role of Advanced Glycation End Products. Life (Basel) 2022; 12:life12020218. [PMID: 35207505 PMCID: PMC8874682 DOI: 10.3390/life12020218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/19/2022] [Accepted: 01/28/2022] [Indexed: 12/17/2022] Open
Abstract
Advanced Glycation End Products (AGEs), the products of the non-enzymatic oxidation of proteins, nucleic acids, and lipids, are accumulated in periodontal tissues under hyperglycemic conditions such as Diabetes Mellitus (DM) and are responsible for sustained periodontal destruction. AGEs mediate their intracellular effects either directly or indirectly through receptor binding (via RAGE) in all types of periodontal ligament cells (osteocytes, gingival fibroblasts, stem cells, epithelial cells), indicating an important target for intervention. In combination with lipopolysaccharides (LPS) from Porphyromonas gingivalis (Pg), the negative impact of AGEs on periodontal tissue is further enhanced and accentuated. In addition, AGE accumulation is evident in peri-implantitis, yet through different underlying molecular mechanisms. Novel therapeutic approaches targeting the effects of AGEs in periodontal ligament cells show beneficial effects in pre-clinical studies. Herein, we provide evidence on the detrimental role of AGE accumulation in oral cavity tissues and their associated signaling pathways in periodontitis and peri-implantitis to further highlight the significance of oral or topical use of AGE blockers or inhibitors along with dental biofilms’ removal and DM regulation in patients’ management.
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Affiliation(s)
- Grigorios Plemmenos
- School of Dentistry, National and Kapodistrian University of Athens, Goudi, 11527 Athens, Greece; or
| | - Christina Piperi
- School of Dentistry, National and Kapodistrian University of Athens, Goudi, 11527 Athens, Greece; or
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Goudi, 11527 Athens, Greece
- Correspondence: ; Tel.: +30-2107462610
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Kim KS, Lee YJ, Ahn S, Chang YS, Choi Y, Lee HJ. Association between soluble forms of the receptor for advanced glycation end products and periodontal disease: a retrospective study. J Korean Assoc Oral Maxillofac Surg 2021; 47:445-453. [PMID: 34969018 PMCID: PMC8721412 DOI: 10.5125/jkaoms.2021.47.6.445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/18/2021] [Accepted: 11/24/2021] [Indexed: 11/10/2022] Open
Abstract
Objectives Periodontitis is the most common chronic disease that causes tooth loss and is related to systemic diseases such as cardiovascular disease and diabetes. An objective indicator of the current activity of periodontitis is necessary. Soluble forms of the receptor for advanced glycation end products (sRAGE) are markers that reflect the status of inflammatory diseases. In this study, the relationship between sRAGE and periodontitis was analyzed to determine whether it can be used to diagnose the current state of periodontitis. Patients and Methods Eighty-four patients without any systemic diseases were diagnosed with periodontitis using three classifications of periodontitis. Demographics and oral examination data such as plaque index (PI), bleeding on probing (BOP) index, and probing pocket depth (PPD) were analyzed according to each classification. In addition, correlation and partial correlation between sRAGE and the values indicating periodontitis were analyzed. Results In each classification, the level of sRAGE tended to decrease if periodontitis was present or severe, but this change was not statistically significant. sRAGE and periodontitis-related variables exhibited a weak correlation, among which the BOP index showed a relatively strong negative correlation (ρ=–0.20). Based on this, on analyzing the correlation between the BOP index and sRAGE in the group with more severe periodontitis (PPD≥5 mm group, severe group of AAP/CDC [American Academy of Periodontology/Centers for Disease Control and Prevention], periodontitis group of López), the correlation further increased (ρ=–0.23, –0.40, –0.50). Partial correlation analysis of the sRAGE and BOP index showed a stronger negative correlation (ρ=–0.36, –0.55, –0.45). Conclusion sRAGE demonstrated a tendency to decrease upon increased severity of periodontitis according to the classifications used. Above all, the correlation with the BOP index, which reflects the current state of periodontitis, was higher in the group with severe periodontitis. This indicates that the current status of periodontitis can be diagnosed through sRAGE.
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Affiliation(s)
- Keun-Suh Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yun Jong Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Soyeon Ahn
- Division of Statistics, Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yoon-Seok Chang
- Division of Statistics, Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seongnam, Korea.,Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yonghoon Choi
- Department of Conservative Dentistry, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
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Renfeng Q, Shuxiao C, Peixian G, Kun L, Xuedong F, Hai Y, Xuejun W, Gang L. ADAM10 attenuates the development of abdominal aortic aneurysms in a mouse model. Mol Med Rep 2021; 24:774. [PMID: 34490486 PMCID: PMC8456315 DOI: 10.3892/mmr.2021.12414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 07/23/2021] [Indexed: 01/24/2023] Open
Abstract
An abdominal aortic aneurysm (AAA) is a life-threatening disease associated with a high mortality rate. At present, surgery or minimally invasive interventions are used in clinical treatment, especially for small aneurysms. However, the benefits of surgical repair are not obvious, and AAA ruptures can be prevented by aneurysm therapy to inhibit the growth of small aneurysms. Therefore, evaluating effective drugs to treat small AAAs is urgently required. Chronic inflammation is the main pathological feature of aneurysmal tissues. The aim of the present study was to investigate the protective role and underlying mechanism of ADAM metallopeptidase domain 10 (ADAM10). In the present study, a mouse model of AAA was established via porcine pancreatic elastase perfusion for 5 min per day for 14 days. ADAM10 (6 mg/kg) was injected intraperitoneally following 3 days of porcine pancreatic elastase perfusion in the ADAM10 group and the treatment continued for 10 days. The maximum inner luminal diameters of the infrarenal abdominal aortas were measured using an animal ultrasound system. The levels of high mobility group box 1 (HMGB1) and soluble receptor for advanced glycosylation end products in serum samples were measured by ELISA. Hematoxylin and eosin and elastin van Gieson staining were performed to observe morphology, integrity of the elastin layers and elastin degradation. CD68 expression was detected by immunohistochemical staining. Reverse transcription-quantitative PCR and western blotting were used for detection of mRNA and protein levels. The gelatinolytic activities of MMP-2 and MMP-9 were quantified via gelatin zymography analysis. These results showed that ADAM10 inhibited HMGB1/RAGE/NF-κB signaling and MMP activity in the pathogenesis of pancreatic elastase-induced AAA, which provide insight into the molecular mechanism of AAA and suggested that ADAM10 may be a potential therapeutic target for AAA.
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Affiliation(s)
- Qiu Renfeng
- Department of Vascular Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Chen Shuxiao
- Department of Vascular Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Gao Peixian
- Department of Vascular Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Luo Kun
- Department of Vascular Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Feng Xuedong
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Yuan Hai
- Department of Vascular Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Wu Xuejun
- Department of Vascular Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Li Gang
- Department of Vascular Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
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Advanced Glycation End Products: New Clinical and Molecular Perspectives. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18147236. [PMID: 34299683 PMCID: PMC8306599 DOI: 10.3390/ijerph18147236] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/30/2021] [Accepted: 07/03/2021] [Indexed: 12/17/2022]
Abstract
Diabetes mellitus (DM) is considered one of the most massive epidemics of the twenty-first century due to its high mortality rates caused mainly due to its complications; therefore, the early identification of such complications becomes a race against time to establish a prompt diagnosis. The research of complications of DM over the years has allowed the development of numerous alternatives for diagnosis. Among these emerge the quantification of advanced glycation end products (AGEs) given their increased levels due to chronic hyperglycemia, while also being related to the induction of different stress-associated cellular responses and proinflammatory mechanisms involved in the progression of chronic complications of DM. Additionally, the investigation for more valuable and safe techniques has led to developing a newer, noninvasive, and effective tool, termed skin fluorescence (SAF). Hence, this study aimed to establish an update about the molecular mechanisms induced by AGEs during the evolution of chronic complications of DM and describe the newer measurement techniques available, highlighting SAF as a possible tool to measure the risk of developing DM chronic complications.
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Sharifi-Zahabi E, Sharafabad FH, Abdollahzad H, Malekahmadi M, Rad NB. Circulating Advanced Glycation End Products and Their Soluble Receptors in Relation to All-Cause and Cardiovascular Mortality: A Systematic Review and Meta-analysis of Prospective Observational Studies. Adv Nutr 2021; 12:2157-2171. [PMID: 34139010 PMCID: PMC8634502 DOI: 10.1093/advances/nmab072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/05/2021] [Accepted: 05/12/2021] [Indexed: 01/10/2023] Open
Abstract
Advanced glycation end products (AGEs) are involved in the development of several age-related complications. The protective role of soluble receptors for AGEs (sRAGE) against deleterious effects of AGEs has been indicated in several studies. However, findings on the association of AGEs or sRAGE with mortality are equivocal. In this meta-analysis we aimed to present a quantitative estimation of the association between circulating AGEs or sRAGE and all-cause or cardiovascular disease (CVD) mortality. A comprehensive literature search was performed to determine relevant publications through the online databases including PubMed, Scopus, and Web of Science up to 29 November 2020. Prospective observational studies assessing the association between circulating AGEs or sRAGE and all-cause or CVD mortality were included. Seven studies with a total of 3718 participants and 733 mortality cases (345 CVD deaths) were included in the meta-analysis for assessing the association between circulating AGEs and mortality. Our results showed that higher circulating AGEs were associated with increased risk of all-cause (pooled effect measure: 1.05; 95% CI: 1.01, 1.09; P = 0.018, I2 = 77.7%) and CVD mortality (pooled effect measure: 1.08; 95% CI: 1.01, 1.14; P = 0.015, I2 = 80.2%), respectively. The association between sRAGE and mortality was assessed in 14 studies with a total of 16,335 participants and 2844 mortality cases (419 CVD deaths). Serum concentrations of sRAGE were not associated with the risk of all-cause mortality (pooled effect measure: 1.01; 95% CI: 1.00, 1.01; P = 0.205, I2 = 75.5%), whereas there was a significant link between sRAGE and the risk of CVD mortality (pooled effect measure: 1.02; 95% CI: 1.00, 1.04; P = 0.02, I2 = 78.9%). Our findings showed that a higher serum AGE concentration was associated with increased risk of all-cause and CVD mortality. In addition, higher circulating sRAGE was related to increased risk of CVD mortality. This review was registered at PROSPERO as CRD42021236559.
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Affiliation(s)
- Elham Sharifi-Zahabi
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | | | - Mahsa Malekahmadi
- Research Institute for Gastroenterology and Liver, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nadya Bahari Rad
- School of Nutritional Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Can we improve dental treatment outcomes in patients with high-risk factors? Evid Based Dent 2021; 22:42-43. [PMID: 33772136 DOI: 10.1038/s41432-021-0163-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Aim The aim of the study was to identify best practice in relation to improving the periodontal conditions of patients and increasing the rate of treatment success, through the identification of risk factors and implementation of changes in lifestyle.Methods and materials The study used two search strategies to identify papers describing best practices and important lifestyle changes which improved periodontal conditions and treatment outcomes in patientsResults The study demonstrated that the two most important factors in terms of interventions to improve periodontal conditions and treatment outcomes were to improve the level of diabetes control and remove aggravating factors such as smoking.Conclusion Many studies have focused on improving treatment outcomes in patients with high-risk factors such as smoking and medical conditions. Strategies, guidelines and protocols that reflect the best practices and lifestyle changes to improve the level of treatment success in high-risk patients should be adapted within treatment planning and follow-up. Successful treatment outcomes are best achieved through controlling diseases affecting the oral cavity and supporting structures.
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Zhang H, Mao YF, Zhao Y, Xu DF, Wang Y, Xu CF, Dong WW, Zhu XY, Ding N, Jiang L, Liu YJ. Upregulation of Matrix Metalloproteinase-9 Protects against Sepsis-Induced Acute Lung Injury via Promoting the Release of Soluble Receptor for Advanced Glycation End Products. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8889313. [PMID: 33628393 PMCID: PMC7889353 DOI: 10.1155/2021/8889313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 12/21/2020] [Accepted: 01/17/2021] [Indexed: 02/06/2023]
Abstract
Dysregulation of matrix metalloproteinase- (MMP-) 9 is implicated in the pathogenesis of acute lung injury (ALI). However, it remains controversial whether MMP-9 improves or deteriorates acute lung injury of different etiologies. The receptor for advanced glycation end products (RAGE) plays a critical role in the pathogenesis of acute lung injury. MMPs are known to mediate RAGE shedding and release of soluble RAGE (sRAGE), which can act as a decoy receptor by competitively inhibiting the binding of RAGE ligands to RAGE. Therefore, this study is aimed at clarifying whether and how pulmonary knockdown of MMP-9 affected sepsis-induced acute lung injury as well as the release of sRAGE in a murine cecal ligation and puncture (CLP) model. The analysis of GEO mouse sepsis datasets GSE15379, GSE52474, and GSE60088 revealed that the mRNA expression of MMP-9 was significantly upregulated in septic mouse lung tissues. Elevation of pulmonary MMP-9 mRNA and protein expressions was confirmed in CLP-induced mouse sepsis model. Intratracheal injection of MMP-9 siRNA resulted in an approximately 60% decrease in pulmonary MMP-9 expression. It was found that pulmonary knockdown of MMP-9 significantly increased mortality of sepsis and exacerbated sepsis-associated acute lung injury. Pulmonary MMP-9 knockdown also decreased sRAGE release and enhanced sepsis-induced activation of the RAGE/nuclear factor-κB (NF-κB) signaling pathway, meanwhile aggravating sepsis-induced oxidative stress and inflammation in lung tissues. In addition, administration of recombinant sRAGE protein suppressed the activation of the RAGE/NF-κB signaling pathway and ameliorated pulmonary oxidative stress, inflammation, and lung injury in CLP-induced septic mice. In conclusion, our data indicate that MMP-9-mediated RAGE shedding limits the severity of sepsis-associated pulmonary edema, inflammation, oxidative stress, and lung injury by suppressing the RAGE/NF-κB signaling pathway via the decoy receptor activities of sRAGE. MMP-9-mediated sRAGE production may serve as a self-limiting mechanism to control and resolve excessive inflammation and oxidative stress in the lung during sepsis.
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Affiliation(s)
- Hui Zhang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yan-Fei Mao
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Ying Zhao
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai 200438, China
| | - Dun-Feng Xu
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yan Wang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Chu-Fan Xu
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Wen-Wen Dong
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Xiao-Yan Zhu
- Department of Physiology, Navy Medical University, Shanghai 200433, China
| | - Ning Ding
- Department of Anesthesiology, Shandong Provincial Third Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250031, China
| | - Lai Jiang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yu-Jian Liu
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai 200438, China
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13
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Momen-Heravi F, Friedman RA, Albeshri S, Sawle A, Kebschull M, Kuhn A, Papapanou PN. Cell Type-Specific Decomposition of Gingival Tissue Transcriptomes. J Dent Res 2021; 100:549-556. [PMID: 33419383 DOI: 10.1177/0022034520979614] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Genome-wide transcriptomic analyses in whole tissues reflect the aggregate gene expression in heterogeneous cell populations comprising resident and migratory cells, and they are unable to identify cell type-specific information. We used a computational method (population-specific expression analysis [PSEA]) to decompose gene expression in gingival tissues into cell type-specific signatures for 8 cell types (epithelial cells, fibroblasts, endothelial cells, neutrophils, monocytes/macrophages, plasma cells, T cells, and B cells). We used a gene expression data set generated using microarrays from 120 persons (310 tissue samples; 241 periodontitis affected and 69 healthy). Decomposition of the whole-tissue transcriptomes identified differentially expressed genes in each of the cell types, which mapped to biologically relevant pathways, including dysregulation of Th17 cell differentiation, AGE-RAGE signaling, and epithelial-mesenchymal transition in epithelial cells. We validated selected PSEA-predicted, differentially expressed genes in purified gingival epithelial cells and B cells from an unrelated cohort (n = 15 persons), each of whom contributed with 1 periodontitis-affected and 1 healthy gingival tissue sample. Differential expression of these genes by quantitative reverse transcription polymerase chain reaction corroborated the PSEA predictions and pointed to dysregulation of biologically important pathways in periodontitis. Collectively, our results demonstrate the robustness of the PSEA in the decomposition of gingival tissue transcriptomes and its ability to identify differentially regulated transcripts in particular cellular constituents. These genes may serve as candidates for further investigation with respect to their roles in the pathogenesis of periodontitis.
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Affiliation(s)
- F Momen-Heravi
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, New York, NY, USA
| | - R A Friedman
- Biomedical Informatics Shared Resource, Herbert Irving Comprehensive Cancer Center and Department of Biomedical Informatics, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - S Albeshri
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, New York, NY, USA
| | - A Sawle
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - M Kebschull
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, New York, NY, USA.,School of Dentistry, Institute of Clinical Sciences, University of Birmingham, Birmingham, UK
| | - A Kuhn
- Institute of Life Technologies, School of Engineering, HES-SO University of Applied Sciences and Arts Western Switzerland, Sion, Switzerland
| | - P N Papapanou
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, New York, NY, USA
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14
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Ene CD, Penescu MN, Georgescu SR, Tampa M, Nicolae I. Posttranslational Modifications Pattern in Clear Cell Renal Cell Carcinoma. Metabolites 2020; 11:10. [PMID: 33375435 PMCID: PMC7824589 DOI: 10.3390/metabo11010010] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 02/07/2023] Open
Abstract
Posttranslational modifications are dynamic enzymatic-mediated processes, regulated in time and space, associated with cancer development. We aimed to evaluate the significance of posttranslational modifications in the pathogenesis of clear cell renal cell carcinoma. The authors developed a prospective, observational study during a period of three years and included 55 patients with localized renal cell carcinoma and 30 heathy subjects. Glycosylation, nitration and carbonylation, thiol-disulfide homeostasis, methylation, phosphorylation and proteolytic cleavage were evaluated in the serum of the evaluated subjects in the present study. Our results showed some characteristics for early ccRCC: high production of cytokines, substrate hypersialylation, induced nitrosative and carbonylic stress, arginine hypermethylation, thiol/disulfide homeostasis (TDH) alteration, the regulatory role of soluble receptors (sRAGE, sIL-6R) in RAGE and IL-6 signaling, the modulatory effect of TK-1and TuM2-PK in controlling the level of phosphometabolites in neoplastic cells. These data could be the initial point for development of a panel of biomarkers such as total sialic acid, orosomucoids, nitrotyrosine, carbonylic metabolites, ADMA, SDMA, and thiol-disulfide equilibrium for early diagnosis of ccRCC. Moreover, they could be considered a specific disease PTM signature which underlines the transition from early to advanced stages in this neoplasia, and of a therapeutic target in kidney oncogenesis.
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Affiliation(s)
- Corina Daniela Ene
- Faculty of General Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.N.P.); (S.R.G.); (M.T.)
- Carol Davila Clinical Hospital of Nephrology, 010731 Bucharest, Romania
| | - Mircea Nicolae Penescu
- Faculty of General Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.N.P.); (S.R.G.); (M.T.)
- Carol Davila Clinical Hospital of Nephrology, 010731 Bucharest, Romania
| | - Simona Roxana Georgescu
- Faculty of General Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.N.P.); (S.R.G.); (M.T.)
- Victor Babes Clinical Hospital of Tropical and Infectious Diseases, 030303 Bucharest, Romania;
| | - Mircea Tampa
- Faculty of General Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.N.P.); (S.R.G.); (M.T.)
- Victor Babes Clinical Hospital of Tropical and Infectious Diseases, 030303 Bucharest, Romania;
| | - Ilinca Nicolae
- Victor Babes Clinical Hospital of Tropical and Infectious Diseases, 030303 Bucharest, Romania;
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15
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Yamashiro K, Ideguchi H, Aoyagi H, Yoshihara-Hirata C, Hirai A, Suzuki-Kyoshima R, Zhang Y, Wake H, Nishibori M, Yamamoto T, Takashiba S. High Mobility Group Box 1 Expression in Oral Inflammation and Regeneration. Front Immunol 2020; 11:1461. [PMID: 32760399 PMCID: PMC7371933 DOI: 10.3389/fimmu.2020.01461] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/04/2020] [Indexed: 12/14/2022] Open
Abstract
High mobility group box 1 (HMGB1) is a non-histone DNA-binding protein of about 30 kDa. It is released from a variety of cells into the extracellular milieu in response to inflammatory stimuli and acts on specific cell-surface receptors, such as receptors for advanced glycation end-products (RAGE), Toll-like receptor (TLR)2, TLR4, with or without forming a complex with other molecules. HMGB1 mediates various mechanisms such as inflammation, cell migration, proliferation, and differentiation. On the other hand, HMGB1 enhances chemotaxis acting through the C-X-C motif chemokine ligand (CXCL)12/C-X-C chemokine receptor (CXCR)4 axis and is involved in regeneration. In the oral cavity, high levels of HMGB1 have been detected in the gingival tissue from periodontitis and peri-implantitis patients, and it has been shown that secreted HMGB1 induces pro-inflammatory cytokine expression, such as interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α, which prolong inflammation. In contrast, wound healing after tooth extraction or titanium dental implant osseointegration requires an initial acute inflammation, which is regulated by secreted HMGB1. This indicates that secreted HMGB1 regulates angiogenesis and bone remodeling by osteoclast and osteoblast activation and promotes bone healing in oral tissue repair. Therefore, HMGB1 can prolong inflammation in the periodontal tissue and, conversely, can regenerate or repair damaged tissues in the oral cavity. In this review, we highlight the role of HMGB1 in the oral cavity by comparing its function and regulation with its function in other diseases. We also discuss the necessity for further studies in this field to provide more specific scientific evidence for dentistry.
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Affiliation(s)
- Keisuke Yamashiro
- Department of Periodontics and Endodontics, Okayama University Hospital, Okayama, Japan
| | - Hidetaka Ideguchi
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroaki Aoyagi
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Chiaki Yoshihara-Hirata
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Anna Hirai
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Risa Suzuki-Kyoshima
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yao Zhang
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hidenori Wake
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Tadashi Yamamoto
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shogo Takashiba
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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16
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Pussinen PJ, Paju S, Viikari J, Salminen A, Taittonen L, Laitinen T, Burgner D, Kähönen M, Lehtimäki T, Hutri-Kähönen N, Raitakari O, Juonala M. Childhood Oral Infections Associate with Adulthood Metabolic Syndrome: A Longitudinal Cohort Study. J Dent Res 2020; 99:1165-1173. [PMID: 32479136 PMCID: PMC7443963 DOI: 10.1177/0022034520929271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Chronic oral infection/inflammation is cross-sectionally associated with metabolic syndrome (MetS) in adults, but there are few longitudinal studies and studies on childhood oral infections and adult MetS risk. We investigated whether childhood clinical parameters indicative of oral infection/inflammation were associated with adulthood MetS and its components. A total of 755 children aged 6, 9, and 12 y underwent a clinical oral examination in 1980 as part of the Cardiovascular Risk in Young Finns Study. Oral health measures included bleeding on probing (BOP), periodontal probing pocket depth, caries, fillings, and visible plaque. Metabolic parameters were determined at baseline and during follow-up. MetS was diagnosed (n = 588, 77.9%) in the adulthood at 21 y (in 2001), 27 y (in 2007), and 31 y (in 2011) after the oral assessment, when the participants were 27 to 43 y old. Regression analyses were adjusted for childhood age, sex, body mass index, and family income, as well as adulthood smoking and education level. In adulthood, MetS was diagnosed in 11.9% (2001), 18.7% (2007), and 20.7% (2011) of participants at the 3 follow-ups. Childhood caries and fillings were associated with increased risk of adult MetS (risk ratio [95% CI], 1.25 [0.90 to 2.45] and 1.27 [1.02 to 1.99]) and with increased systolic blood pressure (1.78 [1.01 to 4.26] and 2.48 [1.11 to 4.12]) and waist circumference (2.25 [1.02 to 4.99] and 1.56 [1.01 to 3.25]), whereas BOP and visible plaque were associated with plasma glucose (1.97 [1.08 to 3.60] and 1.88 [1.00 to 3.53]). Severity of BOP (P = 0.015) and caries (P = 0.005) and teeth with plaque (P = 0.027) were associated with number of MetS components. No such trends were seen with probing pocket depth. Childhood oral infection/inflammation was associated with adverse metabolic parameters and MetS in adulthood.
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Affiliation(s)
- P J Pussinen
- Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - S Paju
- Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - J Viikari
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
| | - A Salminen
- Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | | | - T Laitinen
- University of Eastern Finland, Kuopio, Finland
| | - D Burgner
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Parkville, Australia
| | - M Kähönen
- University of Tampere, Tampere, Finland
| | - T Lehtimäki
- Finnish Cardiovascular Research Center-Tampere, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | | | - O Raitakari
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland.,Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland.,Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
| | - M Juonala
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
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17
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Al‐Aali KA, AlHelal A, Alhamoudi N, Alhenaki AM, Javed F, Abduljabbar T. Assessment of advanced glycation end products in the peri‐implant sulcular fluid among moderate cigarette‐smokers and nonsmokers with peri‐implantitis. Clin Implant Dent Relat Res 2020; 22:380-386. [DOI: 10.1111/cid.12917] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/02/2020] [Accepted: 04/12/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Khulud A. Al‐Aali
- Department of Clinical Dental Sciences College of Dentistry, Princess Nourah Bint Abdulrahman University Ruyadh Saudi Arabia
| | - Abdulaziz AlHelal
- Department of Prosthetic Dental Science College of Dentistry, King Saud University; Research Chair for Biological Research in Dental Health, College of Dentistry Riyadh Saudi Arabia
| | - Nawaf Alhamoudi
- Department of Periodontics and Community Dentistry King Saud University Riyadh Saudi Arabia
| | - Aasem M. Alhenaki
- Department of Prosthetic Dental Science College of Dentistry, King Saud University Riyadh Saudi Arabia
| | - Fawad Javed
- Department of Periodontology, Laboratory for Periodontal‐, Implant‐, Phototherapy (LA‐PIP) School of Dental Medicine, Stony Brook University Stony Brook New York United States
- Division of Orthodontics and Dentofacial Orthopedics Eastman Institute for Oral Health, University of Rochester Rochester New York United States
| | - Tariq Abduljabbar
- Department of Prosthetic Dental Science College of Dentistry, King Saud University Riyadh Saudi Arabia
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18
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Bramhall M, Rich K, Chakraborty A, Logunova L, Han N, Wilson J, McLaughlin J, Brass A, Cruickshank SM. Differential Expression of Soluble Receptor for Advanced Glycation End-products in Mice Susceptible or Resistant to Chronic Colitis. Inflamm Bowel Dis 2020; 26:360-368. [PMID: 31840738 PMCID: PMC7012299 DOI: 10.1093/ibd/izz311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Identifying the factors that contribute to chronicity in inflamed colitic tissue is not trivial. However, in mouse models of colitis, we can investigate at preclinical timepoints. We sought to validate murine Trichuris muris infection as a model for identification of factors that promote development of chronic colitis. METHODS We compared preclinical changes in mice with a resolving immune response to T. muris (resistant) vs mice that fail to expel the worms and develop chronic colitis (susceptible). Findings were then validated in healthy controls and patients with suspected or confirmed IBD. RESULTS The receptor for advanced glycation end products (RAGE) was highly dysregulated between resistant and susceptible mice before the onset of any pathological signs. Increased soluble RAGE (sRAGE) in the serum and feces of resistant mice correlated with reduced colitis scores. Mouse model findings were validated in a preliminary clinical study: fecal sRAGE was differentially expressed in patients with active IBD compared with IBD in remission, patients with IBD excluded, or healthy controls. CONCLUSIONS Preclinical changes in mouse models can identify early pathways in the development of chronic inflammation that human studies cannot. We identified the decoy receptor sRAGE as a potential mechanism for protection against chronic inflammation in colitis in mice and humans. We propose that the RAGE pathway is clinically relevant in the onset of chronic colitis and that further study of sRAGE in IBD may provide a novel diagnostic and therapeutic target.
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Affiliation(s)
- Michael Bramhall
- Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria, Australia,Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, School of Biological Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, UK
| | - Kevin Rich
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, School of Biological Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, UK
| | - Ajanta Chakraborty
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, School of Biological Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, UK
| | - Larisa Logunova
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, School of Biological Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, UK
| | - Namshik Han
- Manchester Academic Health Science Centre, School of Medical Sciences, The University of Manchester, Manchester, UK,Milner Therapeutics Institute, University of Cambridge, Cambridge, UK
| | | | - John McLaughlin
- Salford Royal NHS Foundation Trust, Salford, UK,Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, UK
| | - Andy Brass
- Manchester Academic Health Science Centre, School of Medical Sciences, The University of Manchester, Manchester, UK
| | - Sheena M Cruickshank
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, School of Biological Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, UK,Address correspondence to: S. M. Cruickshank, AV Hill Building, University of Manchester, Manchester M13 9PT, UK ()
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19
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A comparative clinical, microbiological and glycemic analysis of photodynamic therapy and Lactobacillus reuteri in the treatment of chronic periodontitis in type-2 diabetes mellitus patients. Photodiagnosis Photodyn Ther 2019; 29:101629. [PMID: 31870899 DOI: 10.1016/j.pdpdt.2019.101629] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/03/2019] [Accepted: 12/18/2019] [Indexed: 12/23/2022]
Abstract
BACKGROUND Evidence indicates that patients with type 2 diabetes mellitus (DM) exhibit impaired wound healing and are at higher risk for periodontal disease. In DM patients, adjunctive periodontal treatment provides small but statistically significant benefits in terms of reductions in clinical periodontal parameters. This study incorporates antimicrobial and immune modulatory treatment approach specifically targeted at these patients. PURPOSE To evaluate and compare the clinical periodontal, microbiological and HbA1c levels with the use of photodynamic therapy (PDT) and probiotic therapy (PT) as adjunct to root surface debridement (RSD) in the treatment of periodontitis in DM. MATERIALS AND METHODS Demographic data was collected using a questionnaire. Treatment-wise, chronic periodontitis with 2DM patients were subdivided into: (i) Group-A: Patients that underwent RSD with adjunct PDT; (ii) Group-B: Patients that underwent RSD with adjunct PT and; (iii) Group-C: RSD alone. In all groups, probing depth (PD), plaque scores (PS), bleeding on probing (BOP) and clinical attachment level (CAL) gain were measured at baseline and 3 months. Microbiological data consisted the assessment of detection percentage of Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola. RESULTS A total of 58 patients completed the trial. All clinical and microbiological parameters showed statistically significant reduction from baseline to 3 months in all groups (p < 0.05). On inter-group comparison, the proportion of PD with ≥4 mm and ≥5 mm showed statistically significant reduction for Group-A compared to Group-B and Group-C (p < 0.01). Only Group-A showed statistically significant reduction in percentage of HbA1c levels from baseline to 3 months (p < 0.05). Groups A and B showed significantly higher reductions for all the three bacteria compared to Group-C (p < 0.05). However, this reduction was comparable between Groups-A and B, respectively (p > 0.05). CONCLUSION PDT showed additional benefit in deep periodontal pockets and slightly modest reduction in HbA1c levels in DM patients. Further clinical trials are required with large sample size and longer follow up duration to ascertain the findings of the present clinical study.
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