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Pierre FZ, Gomes LCL, Minhoto GB, Valera MC, de Melo RM, Bresciani E. Influence of the Use of Irrigation Solution Inhibitors in Improving Dentine Adhesion: A Systematic Review and Meta-Analysis. Eur J Prosthodont Restor Dent 2024; 32:28-44. [PMID: 37463022 DOI: 10.1922/ejprd_2526pierre17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
INTRODUCTION This systematic review examined the effect of neutralizing agents on bond strength after irrigation with sodium hypochlorite and their existing protocols in literature. METHODS This present study adhered to the PRISMA guidelines and was registered at PROSPERO. Five electronic databases were searched (sept-2020/jan-2021) in English, Spanish, and Portuguese, without any restrictions on publication date. Cases reports, editorials and literature reviews were not included. The risk of bias was assessed using the Cochrane Collaboration tool. From the initial 7,147 studies, 2,745 were removed as duplicates and 4,382 were excluded after a title/abstract screen. RESULTS Seventeen in vitro studies were included. The results showed that the higher the concentration of sodium hypochlorite, the lower the bond strength at dentine/restoration interface (p⟨0.01). Among the studies, sodium ascorbate was the most widely used neutralizer and showed the most significant results in increasing bond strength (p⟨0.01). The bond strength values were found to increase with longer application time of the neutralizing substances (p⟨0.01). CONCLUSIONS The use of sodium ascorbate as a neutralizing agent can reverse the negative effects of the sodium hypochlorite and improve the bond strength between dentine and resin cement, however, it isn't possible to determine the best protocol for use.
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Affiliation(s)
- F Z Pierre
- Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - L C L Gomes
- Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - G B Minhoto
- Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - M C Valera
- Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - R M de Melo
- Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - E Bresciani
- Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
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Teixeira FFC, Cardoso FGR, Ferreira NS, Corazza BJM, Valera MC, Nascimento GG, Martinho FC. Effects of calcium hydroxide intracanal medications on T helper (Th1, Th2, Th9, Th17, and Tfh) and regulatory T (Treg) cell cytokines in apical periodontitis: a CONSORT RCT. J Endod 2022; 48:975-984. [PMID: 35487475 DOI: 10.1016/j.joen.2022.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 12/30/2022]
Abstract
INTRODUCTION This CONSORT RCT investigated T helper (Th1, Th2, Th9, Th17, and Tfh), regulatory T (Treg) cell-type cytokines, and their networks in apical periodontitis (AP). We also assessed the effects of calcium hydroxide [Ca(OH)2] intracanal medications (ICMs) on helper T and Treg cell-type cytokines. METHODS Twenty teeth with primary endodontic infection and apical periodontitis (PEIAP) were randomly divided into two groups: Ca(OH)2 + saline solution (SSL; n = 10) and Ca (OH)2 + 2% Chlorhexidine-gel (2% CHX-gel; n = 10). Samples were collected from the periradicular tissue fluid (PTF) before (PTFs1) and after 14 days of ICMs (PTFs2). The Human High Sensitivity T Cell Panel was used to quantify target T-helper (Th)1: IL-2, 12, and IFN-γ; Th2: IL-4, -5, -13; Th9: IL-9; Th17: IL-17; T follicular helper cells (Tfh): IL-21; and Treg-cell-type cytokine: IL-10. RESULTS Th1-type cytokines were higher, compared to Th2-type, at PTFs1. Positive (+) associations were found among all Th1-type cytokines and all Th2-type cytokines. There were negative (-) correlations between all Th1- and Th2-type cytokines. Size of radiolucent lesions (SRL) and symptoms (TTP and/or POP) were positively correlated with Th1-type cytokines, IL-17, and IL-21 but negatively correlated with Th2-type cytokines and IL-10 (all, p < 0.001). Both ICMs increased Th2-type cytokines and IL-10 (P < 0.05) and decreased Th1- type cytokines, IL-17, and IL-21 (P < 0.05), with no differences among them (P > 0.05). CONCLUSIONS Complex T-cell cytokine networks are involved in AP. Both Ca(OH)2 ICMs effectively increased IL-4, IL-5, IL-10, and IL-13 and lowered IL-2, IL-12, IL-17, IL-21, and IFN-γ.
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Affiliation(s)
- F F C Teixeira
- Department of Restorative Dentistry, Endodontic Division, São Paulo State University - UNESP, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil.
| | - F G R Cardoso
- Department of Restorative Dentistry, Endodontic Division, São Paulo State University - UNESP, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - N S Ferreira
- Department of Restorative Dentistry, Endodontic Division, São Paulo State University - UNESP, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - B J M Corazza
- Department of Restorative Dentistry, Endodontic Division, São Paulo State University - UNESP, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - M C Valera
- Department of Restorative Dentistry, Endodontic Division, São Paulo State University - UNESP, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - G G Nascimento
- Department of Dentistry and Oral Health - Section for Periodontology, Aarhus University, Aarhus, Denmark
| | - F C Martinho
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, Maryland, USA
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Minhoto GB, Khoury RD, Orozco EIF, Prado RF, Valera MC. Effect of chronic unpredictable stress on the progression of experimental apical periodontitis in rats. Int Endod J 2021; 54:1342-1352. [PMID: 33724486 DOI: 10.1111/iej.13515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 11/29/2022]
Abstract
AIM To establish an experimental model combining chronic stress and apical periodontitis by assessing the development of periapical lesions in rats in three different time points. METHODOLOGY Forty-eight male Wistar rats were randomly assigned into two equal groups: Apical periodontitis (AP) and AP + Stress (AP + S). The animals of the AP group were not exposed to stressful conditions whereas the AP + S group were exposed to a variety of stressors on a daily basis until the end of the experiment. After three weeks of chronic unpredictable stress, apical periodontitis was induced in both groups by exposing the pulpal tissue of the mandibular first molar to the oral environment. Each group was further subdivided into three subgroups according to the euthanasia period: 14, 21 and 28 days after pulp exposure. The animals were weighed, and the blood was collected for corticosterone serum dosage by radioimmunoassay. The mandibles were removed and submitted to histopathological and microtomography analyses to assess the inflammatory response and the progression of periapical lesions. Comparisons between the AP and AP + S groups were performed using Student's t-test and Mann-Whitney U-test for parametric and nonparametric data, respectively. The one-way anova test followed by Tukey's test (parametric data) and Kruskal-Wallis followed by Dunn's test (nonparametric data) were used for comparisons between the three time points within the same group (P < 0.05). RESULTS The AP + S group had a significantly lower average percentage of weight gain at 14 days and 21 days after AP induction (P < 0.05). Significantly higher levels of corticosterone were found in the AP + S group at 21 days (P < 0.05). The AP + S group had a significantly greater intensity and extension of inflammatory infiltrate with larger areas of bone loss compared to the AP groups at 21 days (P < 0.05). The volume of the periapical lesions in the AP + S group was significantly larger than that of the AP group 21 days following pulp exposure (P < 0.05). CONCLUSIONS The chronic unpredictable stress model applied for 6 weeks exacerbated the inflammatory response and increased bone loss associated with AP, especially 21 days after its induction. This model appears to be suitable for investigating the bidirectional relationship between apical periodontitis and chronic stress.
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Affiliation(s)
- G B Minhoto
- Endodontic Division, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - R D Khoury
- Endodontic Division, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - E I F Orozco
- Endodontic Division, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - R F Prado
- Endodontic Division, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - M C Valera
- Endodontic Division, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
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Noirrit-Esclassan E, Valera MC, Tremollieres F, Arnal JF, Lenfant F, Fontaine C, Vinel A. Critical Role of Estrogens on Bone Homeostasis in Both Male and Female: From Physiology to Medical Implications. Int J Mol Sci 2021; 22:ijms22041568. [PMID: 33557249 PMCID: PMC7913980 DOI: 10.3390/ijms22041568] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 02/07/2023] Open
Abstract
Bone is a multi-skilled tissue, protecting major organs, regulating calcium phosphate balance and producing hormones. Its development during childhood determines height and stature as well as resistance against fracture in advanced age. Estrogens are key regulators of bone turnover in both females and males. These hormones play a major role in longitudinal and width growth throughout puberty as well as in the regulation of bone turnover. In women, estrogen deficiency is one of the major causes of postmenopausal osteoporosis. In this review, we will summarize the main clinical and experimental studies reporting the effects of estrogens not only in females but also in males, during different life stages. Effects of estrogens on bone involve either Estrogen Receptor (ER)α or ERβ depending on the type of bone (femur, vertebrae, tibia, mandible), the compartment (trabecular or cortical), cell types involved (osteoclasts, osteoblasts and osteocytes) and sex. Finally, we will discuss new ongoing strategies to increase the benefit/risk ratio of the hormonal treatment of menopause.
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Affiliation(s)
- Emmanuelle Noirrit-Esclassan
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Department of Pediatric Dentistry, Faculty of Dental Surgery, University of Toulouse III, F-31000 Toulouse, France
| | - Marie-Cécile Valera
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Department of Pediatric Dentistry, Faculty of Dental Surgery, University of Toulouse III, F-31000 Toulouse, France
| | - Florence Tremollieres
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Menopause and Metabolic Bone Disease Center, Hôpital Paule de Viguier, University Hospital of Toulouse, F-31000 Toulouse, France
| | - Jean-Francois Arnal
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
| | - Françoise Lenfant
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
| | - Coralie Fontaine
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
| | - Alexia Vinel
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Department of Periodontology, Faculty of Dental Surgery, University of Toulouse III, F-31000 Toulouse, France
- Correspondence: ; Tel.: +33-5-61-77-36-10
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Esclassan R, Valera MC, Bergia JM, Canceill T, Mendes LC, Bailleul-Forestier I, Gardette V, Vaysse F, Gurgel-Georgelin M, Noirrit E. Morbidity and Mortality Review in a University Dental Hospital: A Necessary Tool to Improve Quality of Care. Eur J Dent 2021; 15:307-311. [PMID: 33412606 PMCID: PMC8184302 DOI: 10.1055/s-0040-1719233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE The study aimed to describe and to analyze the first morbidity and mortality review (MMRs) set up within a Dental University Hospital using detailed case reports to highlight the benefits of MMRs for patients, practitioners, teachers and to implement appropriate protocols to prevent recurrence. MATERIALS AND METHODS The MMRs were performed within the dentistry departments of the hospital over the 1-year study period. Each case was reviewed according to a protocol based on a tool defined by the Clinical Risk Unit and the Association of Litigation and Risk Management (ALARM). RESULTS Four cases were selected based on an oral report by a doctor from the dental service, a downstream service, or by the attending physician. The first case report related to a patient who suffered a breathing shock. The second concerned a tooth inhalation by a young disabled boy. The third was a therapeutic failure instigated by a student during a tooth preparation, and the fourth case involved an unexpected face-to-face meeting between a prisoner accompanied by police guards and an ancient victim at the dental hospital. DISCUSSION Clinical incidents were investigated with the ALARM protocol. This process is also less focused on the individual who makes the error and more on contributing systemic factors. The systematic analysis of cases associated with bibliographic reviews improves learning and performance outcomes. Clear answers were given in response to the problems raised during these MMRs. CONCLUSION In dental hospitals, the culture of MMRs needs to be integrated into resident training like in medical hospitals.
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Affiliation(s)
- Rémi Esclassan
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France.,Laboratoire AMIS, CNRS, Toulouse, France
| | - Marie-Cécile Valera
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France.,I2MC, CHU de Toulouse and Université de Toulouse, Toulouse, France
| | | | - Thibault Canceill
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France.,CIRIMAT, University of Toulouse, CNRS, INPT, Université Paul Sabatier, Faculté de Pharmacie, Toulouse, France
| | - Leonor Costa Mendes
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France
| | - Isabelle Bailleul-Forestier
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France
| | - Virginie Gardette
- CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France.,UMR INSERM, Université Paul Sabatier, CHU de Toulouse, Hôtel-Dieu, Toulouse, France
| | - Frédéric Vaysse
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France.,Laboratoire AMIS, CNRS, Toulouse, France
| | - Marie Gurgel-Georgelin
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France
| | - Emmanuelle Noirrit
- Faculté de Chirurgie Dentaire de Toulouse, 03 chemin des Maraîchers, Toulouse, France.,CHU Rangueil, 03 chemin des Maraîchers, Toulouse, France.,I2MC, CHU de Toulouse and Université de Toulouse, Toulouse, France
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6
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Corazza BJM, Martinho FC, Khoury RD, Toia CC, Orozco EIF, Prado RF, Machado FP, Valera MC. Clinical influence of calcium hydroxide and N-acetylcysteine on the levels of resolvins E1 and D2 in apical periodontitis. Int Endod J 2020; 54:61-73. [PMID: 32896000 DOI: 10.1111/iej.13403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 01/17/2023]
Abstract
AIM To investigate the presence of resolvins E1 (RvE1) and D2 (RvD2) in teeth with primary endodontic infections and apical periodontitis, and to assess the influence of calcium hydroxide medication [Ca(OH)2 ], in association with 2% chlorhexidine gel (2% CHX gel), and N-acetylcysteine (NAC) on the levels of RvE1 and RvD2 in periapical tissues. METHODOLOGY Thirty-six single-rooted teeth with primary endodontic infections and apical periodontitis were selected and randomly divided into three groups according to the medication: [Ca(OH)2 ] + saline solution (SSL) [Ca(OH)2 + SSL group] (n = 12), Ca(OH)2 + 2% chlorhexidine gel [Ca(OH)2 + 2% CHX gel group] (n = 12) and NAC [NAC group] (n = 12). Samples were collected from the periapical interstitial fluid at two different sampling times: before (S1) and after 14 days of intracanal medications (S2). Resolvins were measured using the enzyme-linked immunosorbent assay. Data were analysed using paired t-test, Wilcoxon test and Kruskal-Wallis test, followed by Dunn's post hoc test; all statistical tests were performed at a significance level of 5%. RESULTS RvE1 and RvD2 were detected in 100% of the samples (36/36) at S1 and S2. Ca(OH)2 medication did not increase the levels of RvE1 or RvD2 (both P > 0.05); however, NAC significantly increased the levels of RvE1 and RvD2 after 14 days of treatment (P < 0.05). CONCLUSIONS RvE1 and RvD2 were detected in periapical tissues from teeth with root canal infections. Moreover, calcium hydroxide medication did not increase the levels of resolvins in apical periodontitis. In contrast, the use of NAC intracanal medication significantly increased the levels of RvE1 and RvD2 after 14 days of treatment.
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Affiliation(s)
- B J M Corazza
- Department of Restorative Dentistry, Endodontic Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - F C Martinho
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD, USA
| | - R D Khoury
- Department of Restorative Dentistry, Endodontic Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - C C Toia
- Department of Restorative Dentistry, Endodontic Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - E I F Orozco
- Department of Restorative Dentistry, Endodontic Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - R F Prado
- Department of Restorative Dentistry, Endodontic Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - F P Machado
- Department of Restorative Dentistry, Endodontic Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
| | - M C Valera
- Department of Restorative Dentistry, Endodontic Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil
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Chantalat E, Valera MC, Vaysse C, Noirrit E, Rusidze M, Weyl A, Vergriete K, Buscail E, Lluel P, Fontaine C, Arnal JF, Lenfant F. Estrogen Receptors and Endometriosis. Int J Mol Sci 2020; 21:ijms21082815. [PMID: 32316608 PMCID: PMC7215544 DOI: 10.3390/ijms21082815] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/10/2020] [Accepted: 04/15/2020] [Indexed: 12/17/2022] Open
Abstract
Endometriosis is a frequent and chronic inflammatory disease with impacts on reproduction, health and quality of life. This disorder is highly estrogen-dependent and the purpose of hormonal treatments is to decrease the endogenous ovarian production of estrogens. High estrogen production is a consistently observed endocrine feature of endometriosis. mRNA and protein levels of estrogen receptors (ER) are different between a normal healthy endometrium and ectopic/eutopic endometrial lesions: endometriotic stromal cells express extraordinarily higher ERβ and significantly lower ERα levels compared with endometrial stromal cells. Aberrant epigenetic regulation such as DNA methylation in endometriotic cells is associated with the pathogenesis and development of endometriosis. Although there is a large body of data regarding ERs in endometriosis, our understanding of the roles of ERα and ERβ in the pathogenesis of endometriosis remains incomplete. The goal of this review is to provide an overview of the links between endometriosis, ERs and the recent advances of treatment strategies based on ERs modulation. We will also attempt to summarize the current understanding of the molecular and cellular mechanisms of action of ERs and how this could pave the way to new therapeutic strategies.
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Affiliation(s)
- Elodie Chantalat
- IUCT Oncopole, 31100 Toulouse, France
- INSERM-UPS UMR U1048, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, BP 84225, CEDEX 04, 31 432 Toulouse, France
| | - Marie-Cécile Valera
- INSERM-UPS UMR U1048, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, BP 84225, CEDEX 04, 31 432 Toulouse, France
- Correspondence:
| | | | - Emmanuelle Noirrit
- INSERM-UPS UMR U1048, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, BP 84225, CEDEX 04, 31 432 Toulouse, France
| | - Mariam Rusidze
- INSERM-UPS UMR U1048, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, BP 84225, CEDEX 04, 31 432 Toulouse, France
| | | | | | - Etienne Buscail
- Department of Visceral Surgery, CHU Rangueil, 31400 Toulouse, France
| | | | - Coralie Fontaine
- INSERM-UPS UMR U1048, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, BP 84225, CEDEX 04, 31 432 Toulouse, France
| | - Jean-François Arnal
- INSERM-UPS UMR U1048, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, BP 84225, CEDEX 04, 31 432 Toulouse, France
| | - Françoise Lenfant
- INSERM-UPS UMR U1048, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, BP 84225, CEDEX 04, 31 432 Toulouse, France
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Abstract
SUMMARY
The aim of this study was to evaluate the color stability of light-cured and dual-cured resin cements after artificial accelerated aging. Ten specimens (6-mm diameter and 2-mm thickness) for each of five resin cements were prepared: GC (dual-cured cement, GCem), Vb (light-cured cement, Variolink II only the base), Vbc (dual-cured cement, Variolink II base with catalyst), VV (light-cured cement, Variolink Veneer), and FR (flowable resin composite, light cured). The samples were polished and stored in an accelerated artificial aging machine for 308 hours (160 klx), with cycles of 120 minutes under light and 60 minutes in the dark. All aging was carried out in distilled water at 37°C and light irradiation at 765 W/m2. The samples were evaluated in a spectrophotometer before and after aging, and results were calculated according to CIEDE2000. The data were statistically analyzed (one-way analysis of variance and Tukey test, 95% confidence). The results of ΔE00 were statistically significant for the type of cement (p<0.001), with differences among tested groups. Variolink II (base only and base + catalyst) and the flowable resin were the cements with the lowest color variations after the artificial accelerated aging. Considering the values ΔE00 of acceptability and perceptibility, none of the tested cements showed acceptable values.
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Affiliation(s)
- NC Ramos
- Nathalia C Ramos, DDS, MSc, PhD student, Restorative Dentistry Program (Prosthodontics), Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (UNESP), São Paulo, Brazil
| | - JN Luz
- Julio N Luz, DDS, MSc, PhD student, Restorative Dentistry Program (Prosthodontics), Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (UNESP), São Paulo, Brazil
| | - MC Valera
- Marcia C Valera, DDS, MSc, PhD, professor, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), São Paulo, Brazil
| | - RM Melo
- Renata M Melo, DDS, MSc, PhD, researcher, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (UNESP), São Paulo, Brazil
| | - GSFA Saavedra
- Guilherme S F A Saavedra, DDS, MSc, PhD, assistant professor, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (UNESP), São Paulo, Brazil
| | - E Bresciani
- Eduardo Bresciani, DDS, MSc, PhD, associate professor, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), São Paulo, Brazil
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Noirrit E, Buscato M, Dupuis M, Payrastre B, Fontaine C, Arnal JF, Valera MC. Effects of conjugated estrogen and bazedoxifene on hemostasis and thrombosis in mice. Endocr Connect 2019; 8:788-795. [PMID: 31085766 PMCID: PMC6590204 DOI: 10.1530/ec-19-0079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 05/14/2019] [Indexed: 11/09/2022]
Abstract
Estrogen-progestin therapy was previously considered as the standard of care for managing bothersome symptoms associated with menopause, but it increases risks of breast cancer and of thromboembolism. The combination of conjugated estrogen (CE) with bazedoxifene (BZA) named tissue-selective estrogen complex (TSEC) was designed to minimize or even abrogate the undesirable effects on breast, while maintaining the beneficial effects such as prevention of osteoporosis and suppression of climacteric symptoms. The risk on thromboembolism associated with TSEC is unknown, although the clinical available data are reassuring. The aim of this study was to define the impact of a chronic administration of CE, BZA or CE + BZA on hemostasis and thrombosis in ovariectomized mice. As expected, CE, but not BZA neither CE + BZA, induced uterine and vagina hypertrophy. As previously demonstrated for 17β-estradiol (E2), we found that CE (i) increased tail-bleeding time, (ii) prevented occlusive thrombus formation in injured carotid artery and (iii) protected against collagen/epinephrine-induced thromboembolism. Thus, whereas BZA antagonized CE action on reproductive tissues, it had no impact on the effect of CE on hemostasis, thromboembolism and arterial thrombosis in mice. CE + BZA shared the anti-thrombotic actions of CE in these mouse models. If a similar process is at work in women, CE combined with BZA could contribute to minimize the risk of thrombosis associated with hormone replacement therapy.
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Affiliation(s)
- Emmanuelle Noirrit
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
- Faculté de Chirurgie Dentaire, Université de Toulouse III, Toulouse, France
| | - Mélissa Buscato
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Marion Dupuis
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Bernard Payrastre
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
- CHU de Toulouse, Laboratoire d’Hématologie, Toulouse, France
| | - Coralie Fontaine
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Jean-François Arnal
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Marie-Cécile Valera
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
- Faculté de Chirurgie Dentaire, Université de Toulouse III, Toulouse, France
- Correspondence should be addressed to M-C Valera:
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10
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Guillaume M, Riant E, Fabre A, Raymond-Letron I, Buscato M, Davezac M, Tramunt B, Montagner A, Smati S, Zahreddine R, Palierne G, Valera MC, Guillou H, Lenfant F, Unsicker K, Metivier R, Fontaine C, Arnal JF, Gourdy P. Selective Liver Estrogen Receptor α Modulation Prevents Steatosis, Diabetes, and Obesity Through the Anorectic Growth Differentiation Factor 15 Hepatokine in Mice. Hepatol Commun 2019; 3:908-924. [PMID: 31304450 PMCID: PMC6601326 DOI: 10.1002/hep4.1363] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 03/28/2019] [Indexed: 12/17/2022] Open
Abstract
Hepatocyte estrogen receptor α (ERα) was recently recognized as a relevant molecular target for nonalcoholic fatty liver disease (NAFLD) prevention. The present study defined to what extent hepatocyte ERα could be involved in preserving metabolic homeostasis in response to a full (17β-estradiol [E2]) or selective (selective estrogen receptor modulator [SERM]) activation. Ovariectomized mice harboring a hepatocyte-specific ERα deletion (LERKO mice) and their wild-type (WT) littermates were fed a high-fat diet (HFD) and concomitantly treated with E2, tamoxifen (TAM; the most used SERM), or vehicle. As expected, both E2 and TAM prevented all HFD-induced metabolic disorders in WT mice, and their protective effects against steatosis were abolished in LERKO mice. However, while E2 still prevented obesity and glucose intolerance in LERKO mice, hepatocyte ERα deletion also abrogated TAM-mediated control of food intake as well as its beneficial actions on adiposity, insulin sensitivity, and glucose homeostasis, suggesting a whole-body protective role for liver-derived circulating factors. Moreover, unlike E2, TAM induced a rise in plasma concentration of the anorectic hepatokine growth differentiation factor 15 (Gdf15) through a transcriptional mechanism dependent on hepatocyte ERα activation. Accordingly, ERα was associated with specific binding sites in the Gdf15 regulatory region in hepatocytes from TAM-treated mice but not under E2 treatment due to specific epigenetic modifications. Finally, all the protective effects of TAM were abolished in HFD-fed GDF15-knockout mice. Conclusion: We identified the selective modulation of hepatocyte ERα as a pharmacologic strategy to induce sufficient anorectic hepatokine Gdf15 to prevent experimental obesity, type 2 diabetes, and NAFLD.
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Affiliation(s)
- Maeva Guillaume
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France.,Service d'Hépato-gastro-entérologie Centre Hospitalier Universitaire de Toulouse Toulouse France
| | - Elodie Riant
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Aurélie Fabre
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Isabelle Raymond-Letron
- STROMALab, Centre National de la Recherche Scientifique ERL5311 Etablissement Français du Sang, Ecole Nationale Vétérinaire de Toulouse, Institut National de la Santé et de le Recherche Médicale (INSERM) U1031, Université de Toulouse III Toulouse France
| | - Melissa Buscato
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Morgane Davezac
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Blandine Tramunt
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Alexandra Montagner
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Sarra Smati
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France.,Institut National de La Recherche Agronomique Unité Médicale de Recherche 1331, ToxAlim, Université de Toulouse Toulouse France
| | - Rana Zahreddine
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Gaëlle Palierne
- Equipe SP@RTE, Unité Médicale de Recherche 6290, Institut de Genétique et Développement de Rennes Université de Rennes 1 Rennes France
| | - Marie-Cécile Valera
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Hervé Guillou
- Institut National de La Recherche Agronomique Unité Médicale de Recherche 1331, ToxAlim, Université de Toulouse Toulouse France
| | - Françoise Lenfant
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Klaus Unsicker
- Institute of Anatomy and Cell Biology, Department of Molecular Embryology University of Freiburg Freiburg Germany
| | - Raphaël Metivier
- Equipe SP@RTE, Unité Médicale de Recherche 6290, Institut de Genétique et Développement de Rennes Université de Rennes 1 Rennes France
| | - Coralie Fontaine
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Jean-François Arnal
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France
| | - Pierre Gourdy
- Institut des Maladies Métaboliques et Cardiovasculaires Unité Médicale de Recherche 1048, Institut National de la Santé et de le Recherche Médicale (INSERM), Université de Toulouse III Toulouse France.,Service de Diabétologie Maladies Métaboliques et Nutrition, Centre Hospitalier Universitaire de Toulouse Toulouse France
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11
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Buscato M, Fontaine C, Fabre A, Vinel A, Valera MC, Noirrit E, Guillaume M, Payrastre B, Métivier R, Arnal JF. The antagonist properties of Bazedoxifene after acute treatment are shifted to stimulatory action after chronic exposure in the liver but not in the uterus. Mol Cell Endocrinol 2018; 472:87-96. [PMID: 29183806 DOI: 10.1016/j.mce.2017.11.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/25/2017] [Accepted: 11/23/2017] [Indexed: 01/16/2023]
Abstract
A promising alternative to conventional hormone therapy for postmenopausal symptoms is treatment combining Bazedoxifene (BZA), a third-generation selective estrogen receptor modulator (SERM), and conjugated equine estrogen (CE). This combination is also known as a tissue-selective estrogen complex (TSEC). Understanding the tissue-specific actions of SERMs and the TSEC remains a major challenge to try to predict their clinical effects. The aim of this study was to compare acute versus chronic treatment with BZA, CE or CE + BZA in two major targets of estrogens, the uterus and the liver. In these two tissues, acute treatment with CE, but not with BZA, induced similar gene expression change than the most important endogenous estrogen, 17-β estradiol (E2). Acute induction of gene expression by E2 or by CE was antagonized by the addition of BZA. Concomitantly, BZA alone or in combination with E2 or CE induced a partial degradation of ERα protein after acute exposure. In uterus, chronic treatment of BZA alone had no impact on tissue weight gain or on epithelial cell proliferation, and also antagonized CE-effect in uterus, thereby mimicking the acute effect. By contrast, in the liver, chronic BZA and CE + BZA elicited agonistic transcriptional effects similar to those of CE alone. In addition, at variance to BZA acute effect, no change in ERα protein abundance was observed after chronic treatment in this tissue. These experimental in vivo data highlight a new aspect of the time-dependent tissue-specific action of BZA or TSEC, i.e. they can act acutely as antagonists but become agonists after chronic treatment. This shift was observed in liver tissue, but not in proliferative sex target such as the uterus.
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Affiliation(s)
- Mélissa Buscato
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Coralie Fontaine
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Aurélie Fabre
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Alexia Vinel
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Marie-Cécile Valera
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France; Faculté de Chirurgie Dentaire, Université de Toulouse III, Toulouse, France
| | - Emmanuelle Noirrit
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France; Faculté de Chirurgie Dentaire, Université de Toulouse III, Toulouse, France
| | - Maeva Guillaume
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France
| | - Bernard Payrastre
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France; Laboratoire d'Hématologie, Toulouse, France
| | - Raphaël Métivier
- Equipe SPARTE, UMR CNRS 6290, Université de Rennes I, Rennes, France
| | - Jean-François Arnal
- Inserm U1048 (I2MC), CHU de Toulouse and Université Toulouse III, I2MC, Toulouse, France.
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12
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Vinel A, Coudert AE, Buscato M, Valera MC, Ostertag A, Katzenellenbogen JA, Katzenellenbogen BS, Berdal A, Babajko S, Arnal JF, Fontaine C. Respective role of membrane and nuclear estrogen receptor (ER) α in the mandible of growing mice: Implications for ERα modulation. J Bone Miner Res 2018; 33:1520-1531. [PMID: 29624728 PMCID: PMC6563159 DOI: 10.1002/jbmr.3434] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/21/2018] [Accepted: 03/27/2018] [Indexed: 12/17/2022]
Abstract
Estrogens play an important role in bone growth and maturation as well as in the regulation of bone turnover in adults. Although the effects of 17β-estradiol (E2) are well documented in long bones and vertebrae, little is known regarding its action in the mandible. E2 actions could be mediated by estrogen receptor (ER) α or β. ERs act primarily as transcriptional factors through two activation functions (AFs), AF1 and AF2, but they can also elicit membrane-initiated steroid signaling (MISS). The aim of the present study was to define ER pathways involved in E2 effects on mandibular bone. Using mice models targeting ERβ or ERα, we first show that E2 effects on mandibular bone are mediated by ERα and do not require ERβ. Second, we show that nuclear ERαAF2 is absolutely required for all the actions of E2 on mandibular bone. Third, inactivation of ERαMISS partially reduced the E2 response on bone thickness and volume, whereas there was no significant impact on bone mineral density. Altogether, these results show that both nuclear and membrane ERα are requested to mediate full estrogen effects in the mandible of growing mice. Finally, selective activation of ERαMISS is able to exert an effect on alveolar bone but not on the cortical compartment, contrary to its protective action on femoral cortical bone. To conclude, these results highlight similarities but also specificities between effects of estrogen in long bones and in the mandible that could be of interest in therapeutic approaches to treat bone mass reduction. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Alexia Vinel
- INSERM-U 1048, I2MC, University of Toulouse 3, Toulouse, France
| | - Amelie E Coudert
- Molecular Oral Pathophysiology Team, Centre de Recherche des Cordeliers, INSERM-U 1138, University of Paris-Diderot, Paris, France
| | - Melissa Buscato
- INSERM-U 1048, I2MC, University of Toulouse 3, Toulouse, France
| | | | - Agnès Ostertag
- UMR1132, BIOSCAR, University of Paris-Diderot, Paris, France
| | | | - Benita S Katzenellenbogen
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Ariane Berdal
- Molecular Oral Pathophysiology Team, Centre de Recherche des Cordeliers, INSERM-U 1138, University of Paris-Diderot, Paris, France
| | - Sylvie Babajko
- Molecular Oral Pathophysiology Team, Centre de Recherche des Cordeliers, INSERM-U 1138, University of Paris-Diderot, Paris, France
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13
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Vinel A, Hay E, Valera MC, Buscato M, Adlanmerini M, Guillaume M, Cohen-Solal M, Ohlsson C, Lenfant F, Arnal JF, Fontaine C. Role of ERαMISS in the Effect of Estradiol on Cancellous and Cortical Femoral Bone in Growing Female Mice. Endocrinology 2016; 157:2533-44. [PMID: 27105385 DOI: 10.1210/en.2015-1994] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Estrogen receptor-α (ERα) acts primarily in the nucleus as a transcription factor involving two activation functions, AF1 and AF2, but it can also induce membrane-initiated steroid signaling (MISS) through the modulation of various kinase activities and/or secondary messenger levels. Previous work has demonstrated that nuclear ERα is required for the protective effect of the estrogen 17β-estradiol (E2), whereas the selective activation of ERαMISS is sufficient to confer protection in cortical but not cancellous bone. The aim of this study was to define whether ERαMISS is necessary for the beneficial actions of chronic E2 exposure on bone. We used a mouse model in which ERα membrane localization had been abrogated due to a point mutation of the palmitoylation site of ERα (ERα-C451A). Alterations of the sex hormones in ERα-C451A precluded the interpretation of bone parameters that were thus analyzed on ovariectomized and supplemented or not with E2 (8 μg/kg/d) to circumvent this bias. We found the beneficial action of E2 on femoral bone mineral density as well as in both cortical and cancellous bone was decreased in ERα-C451A mice compared with their wild-type littermates. Histological and biochemical approaches concurred with the results from bone marrow chimeras to demonstrate that ERαMISS signaling affects the osteoblast but not the osteoclast lineage in response to E2. Thus, in contrast to the uterine and endothelial effects of E2 that are specifically mediated by nuclear ERα and ERαMISS effects, respectively, bone protection is dependent on both, underlining the exquisite tissue-specific actions and interactions of membrane and nuclear ERα.
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Affiliation(s)
- Alexia Vinel
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Eric Hay
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Marie-Cécile Valera
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Mélissa Buscato
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Marine Adlanmerini
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Maeva Guillaume
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Martine Cohen-Solal
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Claes Ohlsson
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Françoise Lenfant
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Jean-François Arnal
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Coralie Fontaine
- INSERM Unité 1048 (A.V., M.C.V., M.B., M.A., M.G., F.L., J.F.A., C.F.), I2MC, University of Toulouse 3, F-31432 Toulouse, France; Unité Mixte de Recherche 1132 (E.H., M.C.-S.), Bone and Cartilage Biology, University of Paris 7, F-75006 Paris, France; and Centre for Bone and Arthritis Research (C.O.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
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14
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Valera MC, Gourdy P, Trémollières F, Arnal JF. From the Women’s Health Initiative to the combination of estrogen and selective estrogen receptor modulators to avoid progestin addition. Maturitas 2015; 82:274-7. [DOI: 10.1016/j.maturitas.2015.07.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 07/13/2015] [Indexed: 12/27/2022]
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15
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Smirnova NF, Fontaine C, Buscato M, Lupieri A, Vinel A, Valera MC, Guillaume M, Malet N, Foidart JM, Raymond-Letron I, Lenfant F, Gourdy P, Katzenellenbogen BS, Katzenellenbogen JA, Laffargue M, Arnal JF. The Activation Function-1 of Estrogen Receptor Alpha Prevents Arterial Neointima Development Through a Direct Effect on Smooth Muscle Cells. Circ Res 2015; 117:770-8. [PMID: 26316608 PMCID: PMC4596486 DOI: 10.1161/circresaha.115.306416] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 08/27/2015] [Indexed: 01/17/2023]
Abstract
RATIONALE 17β-Estradiol (E2) exerts numerous beneficial effects in vascular disease. It regulates gene transcription through nuclear estrogen receptor α (ERα) via 2 activation functions, AF1 and AF2, and can also activate membrane ERα. The role of E2 on the endothelium relies on membrane ERα activation, but the molecular mechanisms of its action on vascular smooth muscle cells (VSMCs) are not fully understood. OBJECTIVE The aim of this study was to determine which cellular target and which ERα subfunction are involved in the preventive action of E2 on neointimal hyperplasia. METHODS AND RESULTS To trigger neointimal hyperplasia of VSMC, we used a mouse model of femoral arterial injury. Cre-Lox models were used to distinguish between the endothelial- and the VSMC-specific actions of E2. The molecular mechanisms underlying the role of E2 were further characterized using both selective ERα agonists and transgenic mice in which the ERαAF1 function had been specifically invalidated. We found that (1) the selective inactivation of ERα in VSMC abrogates the neointimal hyperplasia protection induced by E2, whereas inactivation of endothelial and hematopoietic ERα has no effect; (2) the selective activation of membrane ERα does not prevent neointimal hyperplasia; and (3) ERαAF1 is necessary and sufficient to inhibit postinjury VSMC proliferation. CONCLUSIONS Altogether, ERαAF1-mediated nuclear action is both necessary and sufficient to inhibit postinjury arterial VSMC proliferation, whereas membrane ERα largely regulates the endothelial functions of E2. This highlights the exquisite cell/tissue-specific actions of the ERα subfunctions and helps to delineate the spectrum of action of selective ER modulators.
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Affiliation(s)
- Natalia F Smirnova
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Coralie Fontaine
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Mélissa Buscato
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Adrien Lupieri
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Alexia Vinel
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Marie-Cécile Valera
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Maeva Guillaume
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Nicole Malet
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Jean-Michel Foidart
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Isabelle Raymond-Letron
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Francoise Lenfant
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Pierre Gourdy
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Benita S Katzenellenbogen
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - John A Katzenellenbogen
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Muriel Laffargue
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
| | - Jean-Francois Arnal
- From the Department of Vascular Biology of the Institute of Metabolic and Cardiovascular Diseases (I2MC), Université de Toulouse 3, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France (N.F.S., C.F., M.B., A.L., A.V., M.-C.V., M.G., N.M., F.L., P.G., M.L., J.-F.A.); Laboratory of Tumor and Developmental Biology, GIGA-Cancer, Université de Liège, Groupe Interdisciplinaire de Génoprotéomique Appliquée, Liège, Belgique (J.-M.F.); UMR INRA/DGER 1225, Université de Toulouse, INP, ENVT, Toulouse, France (I.R.-L.); Departments of Molecular and Integrative Biology (B.S.K.) and Chemistry, University of Illinois at Urbana-Champaign (J.A.K.)
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Abstract
Stemming from in vitro and in vivo pre-clinical and human models, tissue-engineering-based strategies continue to demonstrate great potential for the regeneration of the pulp-dentin complex, particularly in necrotic, immature permanent teeth. Nanofibrous scaffolds, which closely resemble the native extracellular matrix, have been successfully synthesized by various techniques, including but not limited to electrospinning. A common goal in scaffold synthesis has been the notion of promoting cell guidance through the careful design and use of a collection of biochemical and physical cues capable of governing and stimulating specific events at the cellular and tissue levels. The latest advances in processing technologies allow for the fabrication of scaffolds where selected bioactive molecules can be delivered locally, thus increasing the possibilities for clinical success. Though electrospun scaffolds have not yet been tested in vivo in either human or animal pulpless models in immature permanent teeth, recent studies have highlighted their regenerative potential both from an in vitro and in vivo (i.e., subcutaneous model) standpoint. Possible applications for these bioactive scaffolds continue to evolve, with significant prospects related to the regeneration of both dentin and pulp tissue and, more recently, to root canal disinfection. Nonetheless, no single implantable scaffold can consistently guide the coordinated growth and development of the multiple tissue types involved in the functional regeneration of the pulp-dentin complex. The purpose of this review is to provide a comprehensive perspective on the latest discoveries related to the use of scaffolds and/or stem cells in regenerative endodontics. The authors focused this review on bioactive nanofibrous scaffolds, injectable scaffolds and stem cells, and pre-clinical findings using stem-cell-based strategies. These topics are discussed in detail in an attempt to provide future direction and to shed light on their potential translation to clinical settings.
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Affiliation(s)
- M T P Albuquerque
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry, Indianapolis, IN 46202, USA Department of Restorative Dentistry, Division of Endodontics, Universidade Estadual Paulista, São José dos Campos Dental School, São José dos Campos, São Paulo, 12245-000, Brazil
| | - M C Valera
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry, Indianapolis, IN 46202, USA
| | - M Nakashima
- Department of Dental Regenerative Medicine, Center of Advanced Medicine for Dental and Oral Diseases, National Center for Geriatrics and Gerontology, Research Institute, Obu, Aichi, 474-8511, Japan
| | - J E Nör
- Department of Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USA
| | - M C Bottino
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry, Indianapolis, IN 46202, USA
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Arnal JF, Fontaine C, Abot A, Valera MC, Laurell H, Gourdy P, Lenfant F. Lessons from the dissection of the activation functions (AF-1 and AF-2) of the estrogen receptor alpha in vivo. Steroids 2013. [PMID: 23200732 DOI: 10.1016/j.steroids.2012.11.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Estrogens influence most of the physiological processes in mammals, including but not limited to reproduction, cognition, behavior, vascular system, metabolism and bone integrity. Given this widespread role for estrogen in human physiology, it is not surprising that estrogen influence the pathophysiology of numerous diseases, including cancer (of the reproductive tract as breast, endometrial but also colorectal, prostate,…), as well as neurodegenerative, inflammatory-immune, cardiovascular and metabolic diseases, and osteoporosis. These actions are mediated by the activation of estrogen receptors (ER) alpha (ERα) and beta (ERβ), which regulate target gene transcription (genomic action) through two independent activation functions (AF)-1 and AF-2, but can also elicit rapid membrane initiated steroid signals (MISS). Targeted ER gene inactivation has shown that although ERβ plays an important role in the central nervous system and in the heart, ERα appears to play a prominent role in most of the other tissues. Pharmacological activation or inhibition of ERα and/or ERβ provides already the basis for many therapeutic interventions, from hormone replacement at menopause to prevention of the recurrence of breast cancer. However, the use of these estrogens or selective estrogen receptors modulators (SERMs) have also induced undesired effects. Thus, an important challenge consists now to uncouple the beneficial actions from other deleterious ones. The in vivo molecular "dissection" of ERα represents both a molecular and integrated approach that already allowed to delineate in mouse the role of the main "subfunctions" of the receptor and that could pave the way to an optimization of the ER modulation.
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Affiliation(s)
- Jean-François Arnal
- INSERM U1048-I2MC, Faculté de Médecine, Université de Toulouse et CHU de Toulouse, 31432 Toulouse, France.
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18
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Palo RM, Bonetti-Filho I, Valera MC, Camargo CHR, Camargo SEA, Moura-Netto C, Pameijer C. Quantification of Peroxide Ion Passage in Dentin, Enamel, and Cementum After Internal Bleaching With Hydrogen Peroxide. Oper Dent 2012; 37:660-4. [DOI: 10.2341/11-334-l] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
The aim of this study was to evaluate the amount of peroxide passage from the pulp chamber to the external enamel surface during the internal bleaching technique. Fifty bovine teeth were sectioned transversally 5 mm below the cemento-enamel junction (CEJ), and the remaining part of the root was sealed with a 2-mm layer of glass ionomer cement. The external surface of the samples was coated with nail varnish, with the exception of standardized circular areas (6-mm diameter) located on the enamel, exposed dentin, or cementum surface of the tooth. The teeth were divided into three experimental groups according to exposed areas close to the CEJ and into two control groups (n=10/group), as follows: GE, enamel exposure area; GC, cementum exposed area; GD, dentin exposed area; Negative control, no presence of internal bleaching agent and uncoated surface; and Positive control, pulp chamber filled with bleaching agent and external surface totally coated with nail varnish. The pulp chamber was filled with 35% hydrogen peroxide (Opalescence Endo, Ultradent). Each sample was placed inside of individual flasks with 1000 μL of acetate buffer solution, 2 M (pH 4.5). After seven days, the buffer solution was transferred to a glass tube, in which 100 μL of leuco-crystal violet and 50 μL of horseradish peroxidase were added, producing a blue solution. The optical density of the blue solution was determined by spectrophotometer and converted into microgram equivalents of hydrogen peroxide. Data were submitted to Kruskal-Wallis and Dunn-Bonferroni tests (α=0.05). All experimental groups presented passage of peroxide to the external surface that was statistically different from that observed in the control groups. It was verified that the passage of peroxide was higher in GD than in GE (p<0.01). The GC group presented a significantly lower peroxide passage than did GD and GE (p<0.01). It can be concluded that the hydrogen peroxide placed into the pulp chamber passed through the dental hard tissues, reaching the external surface and the periodontal tissue. The cementum surface was less permeable than were the dentin and enamel surfaces.
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Affiliation(s)
- RM Palo
- Renato Miotto Palo, DDS, MsC, PhD, professor of endodontics, UNESP–Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - I Bonetti-Filho
- Idomeo Bonetti-Filho, DDS, MsC, PhD, associate professor of endodontics, UNESP–Univ Estadual Paulista, Araraquara, SP, Brazil
| | - MC Valera
- Marcia Carneiro Valera, DDS, MsC, PhD, associate professor of endodontics, UNESP–Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - CHR Camargo
- Carlos Henrique Ribeiro Camargo, DDS, MsC, PhD, associate professor of endodontics, UNESP–Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - SEA Camargo
- Carlos Henrique Ribeiro Camargo, DDS, MsC, PhD, associate professor of endodontics, UNESP–Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - C Moura-Netto
- Cacio Moura-Netto, DDS, MsC, PhD, professor of endodontics, Universidade Paulista–UNIP, São Paulo, SP, Brazil
| | - C Pameijer
- Cornelis Pameijer, DDS, DSc, PhD, professor emeritus, University of Connecticut, Farmington, CT, USA
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19
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Abstract
Platelets play a key role in thrombosis and hemostasis. Accumulation of platelets at the site of vascular injury is the first step in the formation of hemostatic plugs, which play a pivotal role in preventing blood loss after injury. Platelet adhesion at sites of injury results in spreading, secretion, recruitment of additional platelets, and formation of platelet aggregates. Inherited platelet disorders are rare causes of bleeding syndromes, ranging from mild bruising to severe hemorrhage. The defects can reflect deficiency or dysfunction of platelet surface glycoproteins, granule contents, cytoskeletal proteins, platelet pro-coagulant function, and signaling pathways. For instance, Bernard-Soulier syndrome and Glanzmann thrombasthenia are attributed to deficiencies of glycoprotein Ib/IX/V and GPIIb/IIIa, respectively, and are rare but severe platelet disorders. Inherited defects that impair platelet secretion and/or signal transduction are among the most common forms of mild platelet disorders and include gray platelet syndrome, Hermansky-Pudlak syndrome, and Chediak-Higashi syndrome. When necessary, desmopressin, antifibrinolytic agents, and transfusion of platelets remain the most common treatment of inherited platelet disorders. Alternative therapies such as recombinant activated factor VII are also available for a limited number of situations. In this review, we will discuss the management of patients with inherited platelet disorders in various clinical situations related to dental cares, including surgical intervention.
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Affiliation(s)
- Marie-Cécile Valera
- INSERM, U1048, Université Toulouse 3, I2MC, Equipe 11, CHU-Rangueil, Toulouse, France
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Valera MC, Parant O, Vayssiere C, Arnal JF, Payrastre B. Essential thrombocythemia and pregnancy. Eur J Obstet Gynecol Reprod Biol 2011; 158:141-7. [DOI: 10.1016/j.ejogrb.2011.04.040] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 04/19/2011] [Accepted: 04/30/2011] [Indexed: 11/28/2022]
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Valera MC, Salvia ACRD, Maekawa LE, Camargo SEA, Carvalho CAT, Camargo CHR, Koga-Ito CY. Antimicrobial analysis of chlorhexidine gel and intracanal medicaments against microorganisms inoculated in root canals. Minerva Stomatol 2010; 59:415-421. [PMID: 20842079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
AIM The aim of this paper was to evaluate the antimicrobial activity of 2% chlorhexidine gel (CLX) associated with various intracanal medicaments against Candida albicans and Enterococcus faecalis inoculated in root canals. METHODS Thirty six human single-rooted teeth were contaminated with C.albicans and E.faecalis. The canals were instrumented using 2% CLX gel and were divided into three groups according to the intracanal medicaments (ICM) used. Group 1: calcium hydroxide paste [Ca(OH)₂], Group 2: 2% chlorhexidine gel (CLX) and Group 3: 2% CLX gel + Ca(OH)₂. The root canal collections were performed after 21 days of contamination (control collection), after instrumentation (1st collection), after 14 days of intracanal medicament (2nd collection) and 7 days after medicament removal (3rd collection). The microbiological samples were plated in culture media and incubated for 48 hours. The results were submitted to Kruskal-Wallis test (P ≤ 0.05). RESULTS It was verified that the instrumentation with CLX reduced the number of CFU/ml significantly when compared with the confirmation collection (control). However, the use of the ICM was only capable to eliminate completely the microorganisms in the root canals without difference statistics between them. CONCLUSION Although the use of 2% chlorherixidine gel reduces the number of microorganisms significantly, only the ICM calcium hydroxide and calcium hydroxide associated with chlorhexidine are able to eliminate these microorganisms completely.
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Affiliation(s)
- M C Valera
- Department of Restorative Dentistry, São Paulo State University-UNESP, São José dos Campos, São Paulo, Brazil.
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Abstract
The purpose of this study was to evaluate in vitro the efficacy of root reinforcements by light-cured composite resin or zirconium fiber post in simulated immature non-vital teeth. Fifty-six bovine incisors teeth were used for this study. The crown of each tooth was removed in the medium third to obtain a standard length of 30 mm. The specimens were divided into four groups (n = 14): G1) the root canals were instrumented and enlarged to simulate immature non-vital teeth and were reinforced with a light-cured composite resin using a translucent curing post (Luminex system); (G2) the specimens were instrumented, enlarged and they received root reinforcement with zirconium fiber post; G3 (positive control): they received similar treatment to the G1 and G2 groups, but did not receive root reinforcement; G4 (negative control): the roots were not weakened and did not receive reinforcement. Every tooth was submitted to compressive force using an Instron testing machine with an angle of 45 degrees at a speed of 1 mm min(-1) until the fracture. The results showed a markedly increased resistance to fracture in the G1 and G2 (122.38 and 122.08 kg f, respectively). Among the results of G1 and G2 there was not any significant difference (P > 0.05) but they were significantly different from the control groups (P < 0.05). The conclusion is that the use of root reinforcements with zirconium fiber post or composite resin can increase significantly the structural resistance of the weakened teeth, decreasing the risk of the fracture.
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Affiliation(s)
- C A T Carvalho
- Department of Endodontics, School of Dentistry, Paulista State University-UNESP, Sao Jose dos Campos, SP, Brazil.
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Oliveira LD, Leão MVP, Carvalho CAT, Camargo CHR, Valera MC, Jorge AOC, Unterkircher CS. In vitro effects of calcium hydroxide and polymyxin B on endotoxins in root canals. J Dent 2005; 33:107-14. [PMID: 15683891 DOI: 10.1016/j.jdent.2004.08.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2004] [Revised: 08/10/2004] [Accepted: 08/13/2004] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES To evaluate the effects of intracanal medicaments on endotoxins in root canals. METHODS Seventy-five freshly extracted maxillary incisors were used in this study. The crowns of teeth were sectioned near the CEJ in order to standardize the root length to 14 mm. The root canals were instrumented to an apical size #50 file and irrigated with 1% sodium hypochlorite solution and sterilized with 60Co gamma irradiation. Standardized suspension containing Escherichia coli endotoxin was inoculated into the 60 root canals. The specimens were randomly assigned to 5 groups (n=15), according to the intracanal medicament used: (G1) calcium hydroxide; (G2) polymyxin B; (G3) combination neomycin-polymyxin B-hydrocortisone; (G4) positive control (no intracanal medicament); (G5) negative control (no endotoxin and no intracanal medicament). After 7 days, the detoxification of endotoxin was evaluated by Limulus lysate assay and antibody production in B-lymphocytes culture. RESULTS Groups 1, 2 and 5 presented the best results by Limulus lysate and were significantly different to groups 3 and 4 (p<0.05). Stimulation of antibodies production in cell culture by groups 1 and 6 was smaller and statistically different than groups 2, 3, 4 and 5 (p<0.05). Groups 2 and 5 induced a small increase in the antibodies production in relation to the groups 1 and 6. Groups 3 and 4 induced a significant increase of antibodies production (p<0.05). CONCLUSIONS The calcium hydroxide and polymyxin B intracanal medicaments detoxified endotoxin in root canals and altered the properties of LPS to stimulate the antibody production by B-lymphocytes. The combination neomycin-polymyxin B-hydrocortisone did not detoxified endotoxin.
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Affiliation(s)
- L D Oliveira
- Department of Oral Biosciences and Diagnosis, School of Dentistry, Paulista State University-UNESP, Av. Eng. Francisco José Longo 777, São José dos Campos 12245-000, SP Brazil.
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Menezes MM, Valera MC, Jorge AOC, Koga-Ito CY, Camargo CHR, Mancini MNG. In vitro evaluation of the effectiveness of irrigants and intracanal medicaments on microorganisms within root canals. Int Endod J 2004; 37:311-9. [PMID: 15086752 DOI: 10.1111/j.0143-2885.2004.00799.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To evaluate in vitro the effectiveness of sodium hypochlorite (NaOCl), chlorhexidine (CHX) and five intracanal medicaments on microorganisms within root canals. METHODOLOGY Ninety-six human single-rooted extracted teeth were used. After removing the crowns, canal preparation was completed and the external root surfaces were coated with epoxy resin. Following sterilization, the teeth were contaminated with Candida albicans and Enterococcus faecalis, and were incubated at 37 +/- 1 degrees C for 7 days. The teeth were divided according to the irrigant solution or intracanal medicament: group 1, sterile physiologic solution (SPS) and calcium hydroxide (Ca(OH)2) paste; group 2, SPS and camphorated paramonochlorophenol (CPMC); group 3, SPS and tricresol formalin; group 4, SPS and CaOH2 + CPMC paste; group 5, SPS and PMC furacin; group 6, 2.5% NaOCl without intracanal medication; group 7, 2.0% CHX without intracanal medication and group 8, SPS without intracanal medication (control group). Microbiological samples were collected with sterile paper points, and bacterial growth was determined. The data were submitted to the analysis of variance (anova, P = 0.05). RESULTS For C. albicans, groups 3 and 8 were statistically less effective than groups 1, 2, 4 and 5 (Kruskal-Wallis (K-W) = 65.241; gl = 7; P = 0.001). For E. faecalis, groups 6 and 8 were statistically less effective than groups 1-4 and 7 (K-W = 61.048; gl = 7; P = 0.001). CONCLUSIONS Ca(OH)2 + CPMC paste was the most effective intracanal medicament for the elimination of the two microorganisms; 2.0% CHX solution was more effective than 2.5% NaOCl against E. faecalis.
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Affiliation(s)
- M M Menezes
- Department of Restorative Dentistry, São José dos Campos School of Dentistry, Paulista State University (UNESP), São José dos Campos, SP, Brazil.
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Abstract
AIM To investigate pulp chamber penetration of bleaching agents in teeth following restorative procedures. METHODOLOGY Bovine lateral incisors were sectioned 3 mm apical to the cemento-enamel junction and the coronal pulpal tissue was removed. Teeth were divided into six groups (n = 10): G1, G2 and G3 were not submitted to any restorative procedure, while G4, G5 and G6 were submitted to Class V preparations and restored with composite resin. Acetate buffer was placed in the pulp chamber and treatment agents were applied for 60 min at 37 degrees C as follows: G1 and G4, immersion into distilled water; G2 and G5, 10% carbamide peroxide (CP) exposure; G3 and G6, 35% CP bleaching. The buffer solution was removed and transferred to a glass tube where leuco crystal violet and horseradish peroxidase were added, producing a blue solution. The optical density of the blue solution was determined spectrophotometrically at 596 nm. A standard curve made with known amounts of hydrogen peroxide was used to convert the optical density values of the coloured samples into microgram equivalents of hydrogen peroxide. Data were submitted to anova and Tukey's test (5%). RESULTS Amounts of hydrogen peroxide found in the pulp chamber of G2 and G5 specimens (0.1833 +/- 0.2003 micro g) were significantly lower (P = 0.001) when compared to G3 and G6 specimens (0.4604 +/- 0.3981 micro g). Restored teeth held significantly higher (P = 0.001) hydrogen peroxide concentrations in the pulp chamber than intact teeth. CONCLUSION Higher concentrations of the bleaching agent produced higher levels of hydrogen peroxide in the pulp chamber, especially in restored teeth.
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Affiliation(s)
- A R Benetti
- Department of Restorative Dentistry, Physiological Sciences and Social Science and Pediatric Dentistry, São José dos Campos School of Dentistry UNESP, São Paulo, Brazil.
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Abstract
The aim of this study was to evaluate the effect of 1% sodium hypochlorite and five intracanals medications on Candida albicans harvested inside root canals. The contaminated canals were irrigated with sterile saline solution and then treated as follows: (i) filled with Calen paste (calcium hydroxide/ glycol polyethylene paste); (ii) filled with camphorated paramonochloro phenol (CPMC); (iii) filled with 2% iodine-iodate solution; (iv) filled with tricresol formalin; (v) filled with Calen and CPMC pastes; (vi) irrigation with 1% sodium hypochlorite and filled with no intracanal medication; and (vii) no intracanal medication was used. Canal access and the apical foramen were then sealed with Cavit and the roots were stored in a humid chamber at 37 +/- 1 degree C for 14 days. The canals were reinstrumented and irrigated with sterile saline solution. Sterile paper points were used to transfer the root canal contents to test tubes containing sterile saline solution. Part of the suspension was harvested in Sabouraud dextrose agar with chloramphenicol and incubated at 37 +/- 1 degree C for 48 h. CPMC was effective in 100% of the samples followed in decreasing order of effectiveness by calcium hydroxide with CPMC (70% effective), 1% sodium hypochlorite (70% effective) (p < 0.05), tricresol formalin (60% effective), 2% iodine-iodate solution (50% effective), calcium hydroxide paste (30% effective), and saline + no intracanal medication.
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Affiliation(s)
- M C Valera
- Department of Endodontics, School of Dentistry, Paulista State University (UNESP), SP, Brazil
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