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Wang P, Zhang L, Chen C, Yu Q. Impact of dental operative microscopes on precision in minimally invasive dental restoration procedures. Am J Transl Res 2024; 16:3907-3914. [PMID: 39262722 PMCID: PMC11384380 DOI: 10.62347/dwnq1400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 06/16/2024] [Indexed: 09/13/2024]
Abstract
OBJECTIVE To evaluate the effect of dental operative microscopes on precision in minimally invasive dental restoration procedures. METHODS This retrospective analysis included patients who underwent minimally invasive dental restoration procedure at Nanjing Stomatological Hospital from March 2018 to December 2019. Patients were categorized into two groups, an observation group treated with microscope-guided provisional restorations, and a control group treated using conventional methods. Clinical indices, including implant survival rates over five years, were compared between the groups. Multivariate analysis was employed to identify independent risk factors for implant failure. RESULTS After treatment the observation group exhibited significantly lower labial vertical marginal discrepancies and absolute marginal discrepancies, as well as improved labial gingival indices and periodontal probing depths compared to the control group (all P<0.001). Additionally, the observation group scored significantly higher in efficiency, accuracy, and overall quality of tooth preparation (all P<0.001). Clinicians using microscopes demonstrated significantly lower mean Rapid Upper Limb Assessment scores, indicating reduced ergonomic strain (P<0.001). Higher age, worn tooth defects, poor oral hygiene, and non-use of a microscope were identified as independent risk factors for implant failure at the five-year mark. CONCLUSION Dental operative microscopes significantly enhance the precision, efficiency, and ergonomic comfort in minimally invasive dental restorations for both clinicians and patients. Widespread adoption of this technology is strongly recommended.
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Affiliation(s)
- Peng Wang
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University Nanjing 210008, Jiangsu, China
| | - Lei Zhang
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University Nanjing 210008, Jiangsu, China
| | - Changxing Chen
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University Nanjing 210008, Jiangsu, China
| | - Qing Yu
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University Nanjing 210008, Jiangsu, China
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Giambelluca M, Markova E, Louet C, Steinkjer B, Sundset R, Škalko-Basnet N, Hak S. Liposomes - Human phagocytes interplay in whole blood: effect of liposome design. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 54:102712. [PMID: 37838100 DOI: 10.1016/j.nano.2023.102712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/08/2023] [Accepted: 09/19/2023] [Indexed: 10/16/2023]
Abstract
Nanomedicine holds immense potential for therapeutic manipulation of phagocytic immune cells. However, in vitro studies often fail to accurately translate to the complex in vivo environment. To address this gap, we employed an ex vivo human whole-blood assay to evaluate liposome interactions with immune cells. We systematically varied liposome size, PEG-surface densities and sphingomyelin and ganglioside content. We observed differential uptake patterns of the assessed liposomes by neutrophils and monocytes, emphasizing the importance of liposome design. Interestingly, our results aligned closely with published in vivo observations in mice and patients. Moreover, liposome exposure induced changes in cytokine release and cellular responses, highlighting the potential modulation of immune system. Our study highlights the utility of human whole-blood models in assessing nanoparticle-immune cell interactions and provides insights into liposome design for modulating immune responses.
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Affiliation(s)
- Miriam Giambelluca
- Nuclear Medicine and Radiation Biology Research Group, Department of Clinical Medicine, Faculty of Health Science, UiT The Arctic University of Norway, Tromsø, Norway; Centre of Molecular Inflammation Research, Department of Cancer Research and Molecular Medicine, Faculty of Medicine and Health Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Elena Markova
- Nuclear Medicine and Radiation Biology Research Group, Department of Clinical Medicine, Faculty of Health Science, UiT The Arctic University of Norway, Tromsø, Norway.
| | - Claire Louet
- Centre of Molecular Inflammation Research, Department of Cancer Research and Molecular Medicine, Faculty of Medicine and Health Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Bjørg Steinkjer
- Centre of Molecular Inflammation Research, Department of Cancer Research and Molecular Medicine, Faculty of Medicine and Health Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Rune Sundset
- Nuclear Medicine and Radiation Biology Research Group, Department of Clinical Medicine, Faculty of Health Science, UiT The Arctic University of Norway, Tromsø, Norway; PET Imaging Center Tromsø, University Hospital of North Norway (UNN), Tromsø, Norway
| | - Nataša Škalko-Basnet
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Science, UiT The Arctic University of Norway, Tromsø, Norway
| | - Sjoerd Hak
- Department of Biotechnology and Nanomedicine, SINTEF Industry and Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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3
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Kirolos SA, Pilling D, Gomer RH. The extracellular sialidase NEU3 primes neutrophils. J Leukoc Biol 2022; 112:1399-1411. [PMID: 35899930 PMCID: PMC9701152 DOI: 10.1002/jlb.3a0422-217rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/28/2022] [Indexed: 01/04/2023] Open
Abstract
Some extracellular glycoconjugates have sialic acid as the terminal sugar, and sialidases are enzymes that remove this sugar. Mammals have 4 sialidases and can be elevated in inflammation and fibrosis. In this report, we show that incubation of human neutrophils with the extracellular human sialidase NEU3, but not NEU1, NEU2 or NEU4, induces human male and female neutrophils to change from a round to a more amoeboid morphology, causes the primed human neutrophil markers CD11b, CD18, and CD66a to localize to the cell cortex, and decreases the localization of the unprimed human neutrophil markers CD43 and CD62-L at the cell cortex. NEU3, but not the other 3 sialidases, also causes human male and female neutrophils to increase their F-actin content. Human neutrophils treated with NEU3 show a decrease in cortical levels of Sambucus nigra lectin staining and an increase in cortical levels of peanut agglutinin staining, indicating a NEU3-induced desialylation. The inhibition of NEU3 by the NEU3 inhibitor 2-acetylpyridine attenuated the NEU3 effect on neutrophil morphology, indicating that the effect of NEU3 is dependent on its enzymatic activity. Together, these results indicate that NEU3 can prime human male and female neutrophils, and that NEU3 is a potential regulator of inflammation.
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Affiliation(s)
- Sara A Kirolos
- Department of Biology, Texas A&M University, College Station, Texas, USA
| | - Darrell Pilling
- Department of Biology, Texas A&M University, College Station, Texas, USA
| | - Richard H Gomer
- Department of Biology, Texas A&M University, College Station, Texas, USA
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4
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Molnár A, Studinger P, Ledó N. Diagnostic and Therapeutic Approach in ANCA-Associated Glomerulonephritis: A Review on Management Strategies. Front Med (Lausanne) 2022; 9:884188. [PMID: 35721093 PMCID: PMC9205443 DOI: 10.3389/fmed.2022.884188] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/18/2022] [Indexed: 11/24/2022] Open
Abstract
Anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis is a destructive small vessel vasculitis affecting multiple organs. Renal involvement often leads to end-stage renal disease and increases mortality. Prompt diagnosis and initiation of adequate immunosuppressive therapy are critical for the best patient and kidney outcomes. However, considerable heterogeneity in symptoms and severity across the patients frequently hinder the diagnosis and management. The objective of this review is to emphasize the heterogeneity of the ANCA-associated vasculitis, facilitate the recognition and give guidance to the therapeutical possibilities. We present epidemiologic and risk factors, pathogenesis, and provide comprehensive clinical features of the disease. This article also focuses on the currently available therapeutic options and emerging cellular and molecular targets for the management of systemic and especially renal disease. We conducted extensive literature research published on PubMed and Google Scholar. We systematically reviewed, analyzed, and assembled databases, covering a broad spectrum of aspects of the disease. We compared and summarized the recommendations of two recent guidelines on ANCA-associated vasculitis. The incidence of ANCA-associated vasculitis, hence glomerulonephritis shows a steady increase. Familiarity with the presenting symptoms and laboratory abnormalities are necessary for rapid diagnosis. Early initiation of treatment is the key aspect for favorable patient and renal outcomes. A better understanding of the pathogenesis constantly leads to more targeted and therefore more efficient and less toxic treatment.
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Affiliation(s)
| | | | - Nóra Ledó
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
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5
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The Big Five personality traits and regularity of lifetime dental visit attendance: evidence of the Survey of Health, Ageing, and Retirement in Europe (SHARE). Aging Clin Exp Res 2022; 34:1439-1445. [PMID: 34964080 PMCID: PMC9151578 DOI: 10.1007/s40520-021-02051-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/07/2021] [Indexed: 01/22/2023]
Abstract
Background Regular dental visits are essential for the prevention, early detection and treatment of worldwide highly prevalent oral diseases. Personality traits were previously associated with treatment compliance, medication adherence and regular doctor visits, however, the link between personality traits and regular dental visit attendance remains largely unexplored. Thus, the objective of this study is to clarify this link. Methods Data (wave 7) of the Survey of Health, Ageing and Retirement in Europe (SHARE) were used, focusing on Germany (n = 2822). Personality was assessed using the 10-item Big Five Inventory (BFI-10). Regular dental visits were assessed. Multiple logistic regressions were used, adjusting for various covariates. Results Majority of the participants (84%) reported to attend regular dental visits during lifetime. Regularity of lifetime dental visit attendance was positively and significantly associated with increased extraversion [OR 1.13, 95% CI (1.01–1.26)], increased conscientiousness [OR 1.26, 95% CI (1.10–1.44)], and increased openness to experience [OR 1.12, 95% CI (1.01–1.26)]. However, there was a lack of association with agreeableness and neuroticism. Moreover, the outcome measure was positively associated with younger age, being female, born in Germany, being married, higher education, being retired (compared to being homemaker), whereas it was not associated with obesity or chronic diseases. Conclusions Identification of personality traits that are associated with regular dental visits can support prevention, screening and clinical management of oral diseases. Further research in this field may facilitate the development and increase the incorporation of individualized concepts to enhance patient compliance and attendance, and thus the provision of oral and dental care services. Supplementary Information The online version contains supplementary material available at 10.1007/s40520-021-02051-2.
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6
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Hashai K, Chapple IL, Shapira L, Assadi W, Dadon S, Polak D. CD18 Mediates Neutrophil Imperviousness to the Aggregatibacter actinomycetemcomitans JP2 Clone in Molar-Incisor Pattern Periodontitis. Front Immunol 2022; 13:847372. [PMID: 35663998 PMCID: PMC9159298 DOI: 10.3389/fimmu.2022.847372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 04/04/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Molar-incisor pattern periodontitis (MIPP) in the absence of significant local risk factors or systemic disease, is a rare, early onset periodontal disease phenotype, with 0.5% to 2.5% global prevalence. The condition is characterized by impaired neutrophil function and persistent Aggregatibacter actinomycetemcomitans (JP2 clone) infection. The aim of this study was to characterize neutrophil functional responses to JP2 and to investigate the neutrophil receptors involved. Materials and Methods Neutrophils were obtained from whole blood samples of periodontally healthy and MIPP subjects and incubated with the JP2 clone or a non-JP2 clone of A. actinomycetemcomitans. Bacterial survival was tested by blood agar culture; neutrophil death was tested with propidium iodide and flow cytometry; Reactive oxygen production (ROS) was measured with 2',7'-dichlorofluorescein diacetate and a fluorescence plate reader; the cytokinome was analysed using an array profiler, ELISA and RT-PCR. Receptors binding to JP2 were isolated using a novel immunoprecipitation assay and validated functionally using specific blocking antibodies. Results JP2 and non-JP2 survival was comparable between all the neutrophil groups. Resistance to neutrophil necrosis following exposure to JP2 was significantly lower in the MIPP group, than in all the other groups (p<0.0001). Conversely, MIPP neutrophils showed lower levels of ROS production in response to JP2 infection compared with that of healthy neutrophils (p<0.001). Furthermore, significantly lower levels of cytokines, such as IL8, IL10 and TNFα, were observed during JP2 incubation with MIPP neutrophils than upon incubation with periodontally healthy neutrophils. Various proteins expressed on neutrophils bind to JP2. Of these, CD18 was found to mediate neutrophil necrosis. The CD18 receptor on MIPP neutrophils acts differently from that on periodontally healthy patients neutrophils, and appears to reflect differential neutrophil reactions to JP2. Conclusion This study portrays a fundamental difference in neutrophil response to JP2 infection between periodontally healthy and MIPP patients. This was evident in the resistance to necrosis, and lower ROS and cytokine production, despite the persistent presence of viable JP2. Whilst in periodontally healthy neutrophils, JP2 binds to CD18 on cell surfaces, this is not the case in MIPP neutrophils, suggesting a potential role for CD18 in the periodontal susceptibility of MIPP patients.
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Affiliation(s)
- Koren Hashai
- Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- Department of Periodontics, Hadassah Medical Center, Jerusalem, Israel
| | - Ian L. Chapple
- Institute of Clinical Sciences, College of Medical and Dental Sciences, School of Dentistry, University of Birmingham, Birmingham, United Kingdom
- Birmingham Community Healthcare National Health Service (NHS) Foundation Trust, Birmingham, United Kingdom
| | - Lior Shapira
- Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- Department of Periodontics, Hadassah Medical Center, Jerusalem, Israel
| | - Walaa Assadi
- Department of Orthodontics, Rambam Medical Center, Haifa, Israel
| | - Stav Dadon
- Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- Department of Orthodontics, Hadassah Medical Center, Jerusalem, Israel
| | - David Polak
- Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- Department of Periodontics, Hadassah Medical Center, Jerusalem, Israel
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7
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Lin R, Li L. Innate Neutrophil Memory Dynamics in Disease Pathogenesis. Handb Exp Pharmacol 2021; 276:43-64. [PMID: 34486096 DOI: 10.1007/164_2021_538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Neutrophils, the most abundant leukocytes in circulation and the first responders to infection and inflammation, closely modulate both acute and chronic inflammatory processes. Resting neutrophils constantly patrol vasculature and migrate to tissues when challenges occur. When infection and/or inflammation recede, tissue neutrophils will be subsequently cleaned up by macrophages which collectively contribute to the resolution of inflammation. While most studies focus on the anti-microbial function of neutrophils including phagocytosis, degranulation, and neutrophil extracellular traps (NETs) formation, recent research highlighted additional contributions of neutrophils beyond simply controlling infectious agents. Neutrophils with resolving characteristics may alter the activities of neighboring cells and facilitate inflammation resolution, modulate long-term macrophage and adaptive immune responses, therefore having important impacts on host pathophysiology. The focus of this chapter is to provide an updated assessment of recent progress in the emerging field of neutrophil programming and memory in the context of both acute and chronic diseases.
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Affiliation(s)
- RuiCi Lin
- Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, USA.,Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Liwu Li
- Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, USA. .,Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA.
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8
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Liu HJ, Wang B, Wang AC, Zhang DH, Mao C, Li QH. Prognostic factors affecting the short-term efficacy of non-surgical treatment of chronic periodontitis: a multilevel modeling analysis. Eur J Med Res 2021; 26:50. [PMID: 34074306 PMCID: PMC8170789 DOI: 10.1186/s40001-021-00520-y] [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: 05/07/2020] [Accepted: 05/18/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This study is aimed to analyze the prognostic factors affecting the short-term efficacy of non-surgical treatment of patients in periodontitis from stage II to stage IV by the multilevel modeling analysis. MATERIALS AND METHODS A total of 58 patients with chronic periodontitis were included in this study. Patients were clinically explored before and 3 months after the treatment and the difference in probing depth was determined [Reduction of probing depth (Δ PD) = baseline PD - finial probing depth (FPD)] which is considered as the therapeutic evaluation. Three different levels were analyzed: patients, teeth and sites to construct a multi-layer linear model. RESULTS Probing depth (PD) improved significantly compared with that before treatment (p < 0.05), in which FPD was (3.90 ± 1.39) mm, and the ΔPD was (1.79 ± 0.97) mm. Compared with the mesial sites and distal sites of the multi-rooted teeth, the number of PD ≥ 5 mm or PD < 5 mm after the treatment was significantly different (P < 0.05), and the proportion of PD < 5 mm was higher in mesial sites. The null model showed that Δ PD varied greatly between groups at various levels (P < 0.001), with prediction variable of site level, tooth level, and patient level accounted for 66%, 18%, and 16% of the overall difference, respectively. The complete model showed that the Δ PD of smokers was significantly lower than that of non-smokers (P < 0.001). The Δ PD of the mesial and distal sites was larger than that of the buccolingual central site (P < 0.001). The Δ PD of single-rooted teeth was larger than that of multi-rooted teeth (P < 0.001). The baseline PD, tooth mobility (TM), bleeding index (BI), clinical attachment loss (CAL) were significantly negatively correlated with Δ PD (P < 0.001). CONCLUSIONS Patients with periodontitis from stage II to stage IV, who were non-smoking, have good compliance, good awareness of oral health, and low percentage sites with PD ≥ 5 mm at baseline, single-rooted teeth with hypomobility, less clinical attachment loss and lower bleeding index and sites of mesial or distal can obtain an ideal short-term efficacy of non-surgical treatment.
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Affiliation(s)
- Hui-Jie Liu
- Department of Stomatology, The First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116000, Liaoning, China.,Medical Department of Graduate School, Dalian Medical University, Dalian, 116000, Liaoning, China
| | - Bo Wang
- Department of Stomatology, The First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116000, Liaoning, China
| | - Ao-Chen Wang
- Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, 110122, Liaoning, China
| | - Dan-Hong Zhang
- Department of Stomatology, The First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116000, Liaoning, China.,Medical Department of Graduate School, Dalian Medical University, Dalian, 116000, Liaoning, China
| | - Cui Mao
- Department of Stomatology, The First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116000, Liaoning, China.,Medical Department of Graduate School, Dalian Medical University, Dalian, 116000, Liaoning, China
| | - Qiu-Hong Li
- Department of Stomatology, The First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116000, Liaoning, China.
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9
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Dalvi S, Benedicenti S, Hanna R. Effectiveness of Photobiomodulation as an Adjunct to Nonsurgical Periodontal Therapy in the Management of Periodontitis- A Systematic Review of in vivo Human Studies. Photochem Photobiol 2020; 97:223-242. [PMID: 33098680 DOI: 10.1111/php.13348] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/04/2020] [Accepted: 10/20/2020] [Indexed: 12/11/2022]
Abstract
Photobiomodulation therapy (PBMT) has anti-inflammatory, analgesic and regenerative properties. This systematic review aimed to critically appraise the published data of in vivo human randomized clinical trials (RCTs), and present a comprehensive overview of the efficacy of PBMT, as an adjunct to the nonsurgical periodontal therapy (NSPT) in the management of periodontitis. The systematic review protocol is registered in the Prospective Register Of Systematic Reviews (PROSPERO) (www.crd.york.ac.uk/PROSPERO/; ref CRD 42020169108). With the help of the appropriate key words, structured electronic and manual search strategies were applied to gather the relevant published data on in vivo human RCTs based on this topic. Seventeen papers that met the eligibility criteria were included in this review and subjected to a qualitative assessment. Current evidence lacks adequate information regarding the photobiomodulation (PBM) dosimetry, which is fundamental in establishing a standardized and replicable protocol for future researches. Furthermore, substantial discrepancies in the study methodology and a high risk of bias, arising from the majority of the included papers, abet to the inferior quality of these studies. Ultimately, there is an urgent necessity to conduct further well-designed RCTs in order to determine the effectiveness of PBMT, if any, by taking into consideration the abovementioned confounding factors.
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Affiliation(s)
- Snehal Dalvi
- Department of Surgical Sciences and Integrated Diagnostics, Laser Therapy Centre, University of Genoa, Genoa, Italy.,Department of Periodontology, Swargiya Dadasaheb Kalmegh Smruti Dental College and Hospital, Nagpur, Maharashtra, India
| | - Stefano Benedicenti
- Department of Surgical Sciences and Integrated Diagnostics, Laser Therapy Centre, University of Genoa, Genoa, Italy
| | - Reem Hanna
- Department of Surgical Sciences and Integrated Diagnostics, Laser Therapy Centre, University of Genoa, Genoa, Italy.,Department of Oral Surgery, University of Genoa and King's College, London, UK
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10
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BactericidalActivity of Crevicular Polymorphonuclear Neutrophils in Chronic Periodontitis Patients and Healthy Subjects under the Influence of Areca Nut Extract: An In Vitro Study. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10145008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Arecanutchewing is an established risk factor for oral submucous fibrosis (OSMF), but its role in periodontal disease has not yet been defined. Thisstudy aimed to assess the effect of areca nut extracts (ANE) on the bactericidal activity of crevicular polymorphonuclear neutrophils (cPMNs) in healthy subjects and chronic periodontitis (CP) patients. An in vitro study was designed with an equal number of (n = 30) gingival crevicular fluid (GCF) samples collected from CP patients and healthy subjects. Bactericidal activity and hydrogen peroxide (H2O2) assays were performed with the GCF samples pre-treated with extracts of two varieties of areca nut: ripe and tender. Simultaneously, controls were also carried out with Hank’s balanced salt solution (HBSS) and catechin. Independent t-test and one-way analysis of variance (ANOVA), along with post-hoc analysis, were employed for statistical analysis. In both study groups, a significant reduction (p < 0.01)in the bactericidal activity was noted when the samples treated with the ripe areca nut (rANE) were compared with the tender variant (tANE). Similarly, H2O2 levels were significantly reduced (p < 0.001) in the rANE in contrast to tANE for both study groups. The above results were significant within the group but were found to be non-significant between the study groups, except when it was treated with HBSS (p < 0.001). In the present study, it was found that there was a reduction in the bactericidal activity and H2O2 production of cPMNs in both healthy subjects and CP patients in the presence of areca nut extract. Moreover, the effect of rANE on cPMNs was more detrimental than tANE.
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11
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The impact of maternal periodontitis in the development of asthma in the offspring. J Dev Orig Health Dis 2020; 12:293-299. [PMID: 32314681 DOI: 10.1017/s2040174420000203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Clinical and experimental studies show an association between maternal periodontitis and adverse outcomes during gestation. On the other hand, there were no studies evaluating the impact of maternal periodontitis on the offspring. Thus, our objective was to investigate the repercussion of maternal periodontitis on the development of asthma in the offspring. Pregnant rats were submitted or not to periodontitis by ligature technique. Thirty days after birth, the puppies were sensitized and challenged with ovalbumin (OVA) in order to induce asthmatic response. Our results showed that maternal periodontitis reduced cellular infiltrate in the parenchyma of offspring, tracheal responsiveness, lung edema, and anti-OVA antibodies, without alter mucus as well as cytokines production. We concluded that periodontitis has relevant impact on the offspring's immune system, blunting the response to allergic and inflammatory stimulus. This study shows the important role of oral health during pregnancy and opens possibilities for future studies in order to explain the effects of periodontitis during pregnancy in the offspring.
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12
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Mittal R, Jhaveri VM, Kay SIS, Blackwelder P, Patel K. Pseudomonas aeruginosa Invades Human Aortic Endothelial Cells and Induces Cell Damage in vitro. Cardiovasc Hematol Disord Drug Targets 2018; 19:45-50. [PMID: 29886837 DOI: 10.2174/1871529x18666180611094928] [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: 08/08/2017] [Revised: 12/16/2017] [Accepted: 03/28/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cardiovascular diseases such as endocarditis are the second most common cause of death worldwide. Infective Endocarditis (IE) is the most severe infection of the heart associated with significant mortality and morbidity. The binding and invasion of Human Aortic Endothelial Cells (HAECs) by pathogenic microbes can play an important role in the pathogenesis of IE. OBJECTIVE Pseudomonas aeruginosa is an emerging pathogen that has been associated with IE. However, it is not known whether P. aeruginosa can bind and interact with HAECs. The aim of this study was to determine whether P. aeruginosa can bind and colonize HAECs. METHODS The invasion of HAECs by P. aeruginosa was assessed by gentamicin protection assay. Cytokine levels were determined by enzyme-linked Immunosorbent Assay (ELISA) kits. Cell damage was determined by Lactate Dehydrogenase (LDH) assay. RESULTS P. aeruginosa can bind and invade HAECs. Infection of HAECs with P. aeruginosa induces TNF-α IL-1β, IL-6 and IL-8 cytokine production leading to the generation of inflammatory milieu that can cause tissue damage as observed in human clinical cases of IE. We also observed that P. aeruginosa induces cell damage in HAECs. CONCLUSION In this study, we demonstrate for first time that P. aeruginosa can invade and survive inside HAECs. This cell culture model can be of immense importance to determine the efficacy of drug targets against IE.
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Affiliation(s)
- Rahul Mittal
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, FL-33136, United States
| | - Vasanti M Jhaveri
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, FL-33136, United States
| | - Sae-In Samantha Kay
- Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, Florida, FL-33136, United States
| | - Patricia Blackwelder
- Center for Advanced Microscopy, University of Miami, Coral Gables, Florida, FT, United States.,RSMAS, University of Miami, Key Biscayne, Florida, FL-33136, United States
| | - Kunal Patel
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, FL-33136, United States
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