1
|
Valverde A, George A, Nares S, Naqvi AR. Emerging therapeutic strategies targeting bone signaling pathways in periodontitis. J Periodontal Res 2024. [PMID: 39044454 DOI: 10.1111/jre.13326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 06/22/2024] [Accepted: 07/05/2024] [Indexed: 07/25/2024]
Abstract
Periodontitis is a multifactorial immune-mediated disease exacerbated by dysregulated alveolar bone homeostasis. Timely intervention is crucial for disease management to prevent tooth loss. To successfully manage periodontitis, it is imperative to understand the cellular and molecular mechanisms involved in its pathogenesis to develop novel treatment modalities. Non-surgical periodontal therapy (NSPT) such as subgingival instrumentation/debridement has been the underlying treatment strategy over the past decades. However, new NSPT approaches that target key signaling pathways regulating alveolar bone homeostasis have shown positive clinical outcomes. This narrative review aims to discuss endogenous bone homeostasis mechanisms impaired in periodontitis and highlight the clinical outcomes of preventive periodontal therapy to avoid invasive periodontal therapies. Although the anti-resorptive therapeutic adjuncts have demonstrated beneficial outcomes, adverse events have been reported. Diverse immunomodulatory therapies targeting the osteoblast/osteoclast (OB/OC) axis have shown promising outcomes in vivo. Future controlled randomized clinical trials (RCT) would help clinicians and patients in the selection of novel preventing therapies targeting key molecules to effectively treat or prevent periodontitis.
Collapse
Affiliation(s)
- Araceli Valverde
- Department of Periodontics, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
| | - Anne George
- Department of Oral Biology, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
| | - Salvador Nares
- Department of Periodontics, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
| | - Afsar R Naqvi
- Department of Periodontics, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
- Department of Microbiology and Immunology, University of Illinois Chicago, Chicago, Illinois, USA
| |
Collapse
|
2
|
Recovery Sleep Immediately after Prolonged Sleep Deprivation Stimulates the Transcription of Integrated Stress Response-Related Genes in the Liver of Male Rats. Clocks Sleep 2022; 4:623-632. [PMID: 36412581 PMCID: PMC9680379 DOI: 10.3390/clockssleep4040048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/27/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022] Open
Abstract
Sleep loss induces performance impairment and fatigue. The reactivation of human herpesvirus-6, which is related to the phosphorylation of eukaryotic translation initiation factor 2α (eIF2α), is one candidate for use as an objective biomarker of fatigue. Phosphorylated eIF2α is a key regulator in integrated stress response (ISR), an intracellular stress response system. However, the relation between sleep/sleep loss and ISR is unclear. The purpose of the current study was to evaluate the effect of prolonged sleep deprivation and recovery sleep on ISR-related gene expression in rat liver. Eight-week-old male Sprague-Dawley rats were subjected to a 96-hour sleep deprivation using a flowerpot technique. The rats were sacrificed, and the liver was collected immediately or 6 or 72 h after the end of the sleep deprivation. RT-qPCR was used to analyze the expression levels of ISR-related gene transcripts in the rat liver. The transcript levels of the Atf3, Ddit3, Hmox-1, and Ppp15a1r genes were markedly increased early in the recovery sleep period after the termination of sleep deprivation. These results indicate that both activation and inactivation of ISRs in the rat liver occur simultaneously in the early phase of recovery sleep.
Collapse
|
3
|
Pharmacological Therapies for the Management of Inflammatory Bone Resorption in Periodontal Disease: A Review of Preclinical Studies. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5832009. [PMID: 35547360 PMCID: PMC9085331 DOI: 10.1155/2022/5832009] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/28/2022] [Accepted: 04/13/2022] [Indexed: 02/06/2023]
Abstract
Periodontitis, a highly prevalent multicausal chronic inflammatory and destructive disease, develops as a result of complex host-parasite interactions. Dysbiotic bacterial biofilm in contact with the gingival tissues initiates a cascade of inflammatory events, mediated and modulated by the host's immune response, which is characterized by increased expression of several inflammatory mediators such as cytokines and chemokines in the connective tissue. If periodontal disease (PD) is left untreated, it results in the destruction of the supporting tissues around the teeth, including periodontal ligament, cementum, and alveolar bone, which lead to a wide range of disabilities and poor quality of life, thus imposing significant burdens. This process depends on the differentiation and activity of osteoclasts, the cells responsible for reabsorbing the bone tissue. Therefore, the inhibition of differentiation or activity of these cells is a promising strategy for controlling bone resorption. Several pharmacological drugs that target osteoclasts and inflammatory cells with immunomodulatory and anti-inflammatory effects, such as bisphosphonates, anti-RANK-L antibody, strontium ranelate, cathepsin inhibitors, curcumin, flavonoids, specialized proresolving mediators, and probiotics, were already described to manage inflammatory bone resorption during experimental PD progression in preclinical studies. Meantime, a growing number of studies have described the beneficial effects of herbal products in inhibiting bone resorption in experimental PD. Therefore, this review summarizes the role of several pharmacological drugs used for PD prevention and treatment and highlights the targeted action of all those drugs with antiresorptive properties. In addition, our review provides a timely and critical appraisal for the scientific rationale use of the antiresorptive and immunomodulatory medications in preclinical studies, which will help to understand the basis for its clinical application.
Collapse
|
4
|
França ALDQ, Chaves HV, Freire JMDO, de Sousa LHT, Pimenta ATA, Lima MAS, de Oliveira BR, de Mattos MC, Pinto VDPT, Portela AMLR, Pereira KMA, Costa JJDN, Goes P, Jorge RJB, Silveira JADM, Braz HLB, de Moraes MEA, Bezerra MM. Molecular docking study and antireabsorptive activity of a semi-synthetic coumarin derivative from Platymiscium floribundum in the ligature-induced periodontitis in rats: the involvement of heme oxygenase-1. Clin Oral Investig 2021; 26:1701-1711. [PMID: 34409494 DOI: 10.1007/s00784-021-04143-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 08/11/2021] [Indexed: 11/26/2022]
Abstract
OBJETIVE This study aimed to evaluate the anti-resorptive activity of a semi-synthetic coumarin derivative from Platymiscium floribundum, named 6,7-dimethoxy-3-nitrocoumarin. MATERIAL AND METHODS Molecular docking studies were performed to test the binding performance of the derivative against targets associated with alveolar bone loss (TNF-α, IL-1β, and catalase) and a target considered an antioxidant defense (HO-1) during periodontitis. Periodontitis was induced by placing a nylon ligature around the second molars. The rats received for 11 days 6,7-dimethoxy-3-nitrocoumarin (0.01, 0.1, or 1 mg/kg) or vehicle. We investigated by RT-qPCR analysis (TNF-α, IL-1β, and HO-1 mRNA expression levels) and by colorimetric assay (catalase activity) the mechanism of action mediated by 6,7-dimethoxy-3-nitrocoumarin. The in vivo toxicity of 6,7-dimethoxy-3-nitrocoumarin was evaluated. RESULTS 6,7-Dimethoxy-3-nitrocoumarin (0.1 or 1 mg/kg) reduced alveolar bone loss (1.05 ± 0.24), when compared to vehicle-treated group (3.05 ± 0.30). The interactions of 6,7-dimethoxy-3-nitrocoumarin and the four targets (TNF-α, IL-1β, catalase, and HO-1) showed firm bonds above 6.0 kcal/mol. 6,7-dimethoxy-3-nitrocoumarin (1 mg/kg) lowered mRNA expression levels of TNF-α (2.33 ± 0.56) and IL-1β (19.87 ± 2.9), while it increased both the mRNA expression levels of HO-1 (43.40 ± 1.05) and the catalase activity (46.42 ± 4.59), when compared to vehicle-treated group (46.29 ± 8.43; 37.83 ± 4.38; 1.58 ± 0.11; 8.93 ± 1.86, respectively). The animals did not show any signs of toxicity. CONCLUSION 6,7-Dimethoxy-3-nitrocoumarin decreased inflammatory bone loss in the ligature-induced periodontitis in rats, and the activation of the HO-1 pathway may contribute, at least partially, to its protective effects by reducing TNF-α and IL-1β mRNA levels and increasing catalase activity. CLINICAL RELEVANCE 6,7-Dimethoxy-3-nitrocumarin could be used as an adjunct to subgingival instrumentation during active and supportive periodontal treatment.
Collapse
Affiliation(s)
| | - Hellíada V Chaves
- Postgraduate Program in Health Sciences, Federal University of Ceará, Sobral, Ceará, Brazil
- School of Dentistry, Federal University of Ceará, Sobral, Ceará, Brazil
| | | | - Luzia Hermínia T de Sousa
- Postgraduate Program in Odontology, School of Odontology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Antônia T A Pimenta
- Postgraduate Program in Chemistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Mary Anne S Lima
- Postgraduate Program in Chemistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Bruna R de Oliveira
- Postgraduate Program in Chemistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Vicente de Paulo T Pinto
- Postgraduate Program in Health Sciences, Federal University of Ceará, Sobral, Ceará, Brazil
- School of Medicine, Federal University of Ceará, Sobral, Ceará, Brazil
| | | | - Karuza Maria A Pereira
- Department of Morphology, School of Medicine, Postgraduate Program in Morphological Science, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Paula Goes
- Department of Pathology and Legal Medicine, Medical School, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Roberta Jeane B Jorge
- Department of Morphology, School of Medicine, Postgraduate Program in Morphological Science, Federal University of Ceará, Fortaleza, Ceará, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Helyson Lucas B Braz
- Department of Morphology, School of Medicine, Postgraduate Program in Morphological Science, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Mirna M Bezerra
- Postgraduate Program in Health Sciences, Federal University of Ceará, Sobral, Ceará, Brazil.
- School of Medicine, Federal University of Ceará, Sobral, Ceará, Brazil.
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Ceará, Brazil.
| |
Collapse
|
5
|
Che J, Yang J, Zhao B, Shang P. HO-1: A new potential therapeutic target to combat osteoporosis. Eur J Pharmacol 2021; 906:174219. [PMID: 34081904 DOI: 10.1016/j.ejphar.2021.174219] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/24/2021] [Accepted: 05/28/2021] [Indexed: 02/07/2023]
Abstract
Heme oxygenase-1 (HO-1) exerts a protective effect against cell damage and induces the activity of many enzymes involved in the treatment of many human diseases, including osteoporosis. The increasing prevalence of osteoporosis and the limitations of the current treatments available led to a continuous occurrence of bone loss and osteoporotic fractures, highlighting the need of a better understanding of the mechanism and function of HO-1. Many factors cause osteoporosis, including lack of estrogen, aging, and iron overload, and they either cause the increase in inflammatory factors or the increase in reactive oxygen species to break bone reconstruction balance. Therefore, regulating the production of inflammatory factors and reactive oxygen species may become a strategy for the treatment of osteoporosis. Solid evidence showed that the overexpression of HO-1 compensates high oxidation levels by increasing intracellular antioxidant levels and reduces inflammation by suppressing pro-inflammatory factors. Some extracts can target HO-1 and ameliorate osteoporosis. However, no systematic report is available on therapies targeting HO-1 to combat osteoporosis. Therefore, this review summarizes the biological characteristics of HO-1, and the relationship between inflammatory response and reactive oxygen species production regulated by HO-1 and osteoporosis. The understanding of the role of HO-1 in osteoporosis may provide ideas for a potential clinical treatment and new drugs targeting HO-1.
Collapse
Affiliation(s)
- Jingmin Che
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, 518057, China; School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
| | - Jiancheng Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Department of Spinal Surgery, People's Hospital of Longhua Shenzhen, Shenzhen, China.
| | - Bin Zhao
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, 518057, China; School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
| | - Peng Shang
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, 518057, China; Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
| |
Collapse
|
6
|
Marins LM, Napimoga MH, Malta FDS, Miranda TS, Nani EP, Franco BDST, da Silva HDP, Duarte PM. Effects of strontium ranelate on ligature-induced periodontitis in estrogen-deficient and estrogen-sufficient rats. J Periodontal Res 2019; 55:141-151. [PMID: 31539178 DOI: 10.1111/jre.12697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 08/15/2019] [Accepted: 08/26/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND OBJECTIVES Strontium ranelate is a medication indicated for the treatment of osteoporosis that presents concomitant anti-resorptive and osteoanabolic dual biological activity. However, the effects of strontium ranelate on alveolar bone have been poorly explored. Furthermore, to date, there are no data on the effects of this medication on alveolar bone loss (BL) during conditions of estrogen deficiency. Therefore, the aim of this study was to evaluate the effects of strontium ranelate on ligature-induced periodontitis in estrogen-deficient and estrogen-sufficient rats. METHODS Ninety-six rats were assigned to one of the following groups: sham-surgery + water (estrogen-sufficient; n = 24); ovariectomy + water (estrogen-deficient; n = 24), sham-surgery + strontium ranelate (ranelate/estrogen-sufficient; n = 24) and; ovariectomy + strontium ranelate (ranelate/estrogen-deficient; n = 24). The rats received strontium ranelate or water from the 14th day after ovariectomy until the end of the experiment. On the 21st day after ovariectomy, one first mandibular molar received a ligature, while the contralateral tooth was left unligated. Eight rats per group were killed at 10, 20, and 30 days after ligature placement. Bone loss (BL) and trabecular bone area (TBA) were analyzed in the furcation area of ligated and unligated teeth at all experimental times by histometry. Tartrate-resistant acid phosphatase (TRAP) positive cells and immunohistochemical staining for osteocalcin (OCN), osteopontin (OPN), osteoprotegerin (OPG), and receptor activator of NF-КB ligand (RANKL) were assessed in the ligated teeth at 30 days after ligature placement. RESULTS At 10 and 30 days, ligated teeth of the estrogen-deficient group exhibited higher BL, when compared to all other groups (P < .05). At 10 days, TBAs were higher in the unligated teeth of strontium ranelate-treated groups, when compared to those of untreated groups (P < .05). At 30 days, the ligated teeth of the estrogen-deficient group exhibited lower TBA than the other groups (P < .05). There were no differences among groups regarding the number of TRAP-stained cells (P < .05). The strontium ranelate-treated groups exhibited lower expressions of OCN and RANKL than the untreated groups (P < .05). The estrogen-sufficient group presented higher staining for OPG than both treated and untreated estrogen-deficient groups (P < .05). CONCLUSIONS Strontium ranelate prevented ligature-induced BL in an estrogen-deficiency condition and, to a certain extent, increased TBA in the presence and absence of periodontal collapse in states of estrogen deficiency and estrogen sufficiency. Furthermore, strontium ranelate also affected the expression of bone markers, appearing to have acted predominantly as an anti-resorptive agent.
Collapse
Affiliation(s)
- Letícia Macedo Marins
- Dental Research Division, Department of Periodontology, Guarulhos University, Guarulhos, SP, Brazil
| | - Marcelo Henrique Napimoga
- Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Área de Imunologia, Campinas, SP, Brazil
| | - Fernando de Souza Malta
- Dental Research Division, Department of Periodontology, Guarulhos University, Guarulhos, SP, Brazil
| | | | - Edson Parra Nani
- Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Área de Imunologia, Campinas, SP, Brazil
| | | | | | - Poliana Mendes Duarte
- Dental Research Division, Department of Periodontology, Guarulhos University, Guarulhos, SP, Brazil.,Department of Periodontology, College of Dentistry, University of Florida, Gainesville, FL, USA
| |
Collapse
|