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Lin A, Kitaura H, Ohori F, Noguchi T, Marahleh A, Ma J, Ren J, Miura M, Fan Z, Narita K, Mizoguchi I. (D-Ala 2)GIP Inhibits Inflammatory Bone Resorption by Suppressing TNF-α and RANKL Expression and Directly Impeding Osteoclast Formation. Int J Mol Sci 2024; 25:2555. [PMID: 38473802 DOI: 10.3390/ijms25052555] [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: 01/18/2024] [Revised: 02/08/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
Glucose-insulinotropic polypeptide (GIP) is an incretin hormone that induces insulin secretion and decreases blood glucose levels. In addition, it has been reported to suppress osteoclast formation. Native GIP is rapidly degraded by dipeptidyl peptidase-4 (DPP-4). (D-Ala2)GIP is a newly developed GIP analog that demonstrates enhanced resistance to DPP-4. This study aimed to evaluate the influence of (D-Ala2)GIP on osteoclast formation and bone resorption during lipopolysaccharide (LPS)-induced inflammation in vivo and in vitro. In vivo, mice received supracalvarial injections of LPS with or without (D-Ala2)GIP for 5 days. Osteoclast formation and bone resorption were evaluated, and TNF-α and RANKL expression were measured. In vitro, the influence of (D-Ala2)GIP on RANKL- and TNF-α-induced osteoclastogenesis, LPS-triggered TNF-α expression in macrophages, and RANKL expression in osteoblasts were examined. Compared to the LPS-only group, calvariae co-administered LPS and (D-Ala2)GIP led to less osteoclast formation, lower bone resorption, and decreased TNF-α and RANKL expression. (D-Ala2)GIP inhibited osteoclastogenesis induced by RANKL and TNF-α and downregulated TNF-α expression in macrophages and RANKL expression in osteoblasts in vitro. Furthermore, (D-Ala2)GIP suppressed the MAPK signaling pathway. The results suggest that (D-Ala2)GIP dampened LPS-triggered osteoclast formation and bone resorption in vivo by reducing TNF-α and RANKL expression and directly inhibiting osteoclastogenesis.
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Affiliation(s)
- Angyi Lin
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Hideki Kitaura
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Fumitoshi Ohori
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Takahiro Noguchi
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Aseel Marahleh
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8575, Miyagi, Japan
| | - Jinghan Ma
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Jiayi Ren
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Mariko Miura
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Ziqiu Fan
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Kohei Narita
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
| | - Itaru Mizoguchi
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-Machi, Aoba-Ku, Sendai 980-8575, Miyagi, Japan
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Little-Letsinger SE, Hamilton SE. Leveraging mice with diverse microbial exposures for advances in osteoimmunology. Front Endocrinol (Lausanne) 2023; 14:1168552. [PMID: 37251680 PMCID: PMC10210590 DOI: 10.3389/fendo.2023.1168552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/21/2023] [Indexed: 05/31/2023] Open
Abstract
The skeletal and immune systems are intricately intertwined within the bone marrow microenvironment, a field of study termed osteoimmunology. Osteoimmune interactions are key players in bone homeostasis and remodeling. Despite the critical role of the immune system in bone health, virtually all animal research in osteoimmunology, and more broadly bone biology, relies on organisms with naïve immune systems. Drawing on insights from osteoimmunology, evolutionary anthropology, and immunology, this perspective proposes the use of a novel translational model: the dirty mouse. Dirty mice, characterized by diverse exposures to commensal and pathogenic microbes, have mature immune systems comparable to adult humans, while the naïve immune system of specific-pathogen free mice is akin to a neonate. Investigation into the dirty mouse model will likely yield important insights in our understanding of bone diseases and disorders. A high benefit of this model is expected for diseases known to have a connection between overactivation of the immune system and negative bone outcomes, including aging and osteoporosis, rheumatoid arthritis, HIV/AIDS, obesity and diabetes, bone marrow metastases, and bone cancers.
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Affiliation(s)
| | - Sara E. Hamilton
- Department of Laboratory Medicine and Pathology, Center for Immunology, University of Minnesota, Minneapolis, MN, United States
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Wu Y, Yang D, Liu R, Wang L, Chen GY. Selective Response to Bacterial Infection by Regulating Siglec-E Expression. iScience 2020; 23:101473. [PMID: 32889432 PMCID: PMC7479279 DOI: 10.1016/j.isci.2020.101473] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/10/2020] [Accepted: 08/11/2020] [Indexed: 12/24/2022] Open
Abstract
Interactions between microbes and hosts can be a benign, deleterious, or even fatal, resulting in death of the host, the microbe, or both. Sialic acid-binding immunoglobulin-like lectins (Siglecs) suppress infection responses to sialylated pathogens. However, most pathogens are nonsialylated. Here we determined Siglecs respond to nonsialylated Gram-negative bacteria (Escherichia coli 25922 and DH5α) and Gram-positive bacteria (Staphylococcus aureus and Listeria monocytogenes). We found that Siglece-/- mice had higher mortality than wild-type mice following Gram-negative but not Gram-positive bacterial infection. Better survival in wild-type mice depended on more efficient clearance of Gram-negative than Gram-positive bacteria. Gram-negative bacteria upregulated Siglec-E, thus increasing reactive oxygen species (ROS); Tyr432 in the ITIM domain of Siglec-E was required to increase ROS. Moreover, Gram-negative bacteria upregulated Siglec-E via TLR4/MyD88/JNK/NF-κB/AP-1, whereas Gram-positive bacteria downregulated Siglec-E via TLR2/RANKL/TRAF6/Syk. Thus, our study describes a fundamentally new role for Siglec-E during infection.
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Affiliation(s)
- Yin Wu
- Children's Foundation Research Institute at Le Bonheur Children's Hospital, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38103, USA
| | - Darong Yang
- Children's Foundation Research Institute at Le Bonheur Children's Hospital, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38103, USA
| | - Runhua Liu
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
- Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lizhong Wang
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
- Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Guo-Yun Chen
- Children's Foundation Research Institute at Le Bonheur Children's Hospital, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38103, USA
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Leite FRM, Nascimento GG, Baake S, Pedersen LD, Scheutz F, López R. Impact of Smoking Cessation on Periodontitis: A Systematic Review and Meta-analysis of Prospective Longitudinal Observational and Interventional Studies. Nicotine Tob Res 2020; 21:1600-1608. [PMID: 30011036 DOI: 10.1093/ntr/nty147] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 07/10/2018] [Indexed: 01/20/2023]
Abstract
AIMS This systematic review aimed to estimate the effect of tobacco smoking cessation on the risk for periodontitis compared to the risk among never-smokers and to evaluate the effect of tobacco smoking cessation on the clinical outcomes of nonsurgical periodontal treatment. METHODS Electronic searches were performed in PubMed, Scopus, and Embase. Search strategy included MeSH and free terms: periodontitis, periodontal diseases, smoking, tobacco use, tobacco, tobacco products, cigarette, pipe, and cigar. Only original prospective longitudinal observational and interventional studies that investigated the association between smoking cessation and periodontitis onset or progression were included. Meta-analyses were conducted to summarize the evidence. RESULTS A total of 2743 articles were identified in electronic searches; out of which only six were included in the meta-analysis. Pooled estimates showed that the risk of periodontitis incidence or progression among those who quit smoking was not significantly different from the risk for never-smokers (risk ratio [RR] = 0.97; 95% confidence interval [CI] = 0.87% to 1.08%). Smokers had approximately 80% higher risk of periodontitis than quitters (RR = 1.79; 95% CI = 1.36% to 2.35%) and never-smokers (RR = 1.82; 95% CI = 1.43% to 2.31%). Periodontal therapy resulted in up to 0.2 mm (95% CI = -0.32% to -0.08%) higher gain in attachment level and extra 0.32 mm (95% CI = 0.07% to 0.52%) reduction in pocket depth among quitters over nonquitters after short follow-up (12-24 months). CONCLUSIONS Few studies on the topic were identified. Smoking cessation reduced the risk for periodontitis onset and progression, and improved the outcomes of nonsurgical periodontal therapy. IMPLICATIONS This review provides the first quantitative evidence of the impact of smoking cessation on the risk for periodontitis onset and progression. The findings have demonstrated that the risk for periodontitis becomes comparable to that of never-smokers and that nonsurgical periodontal treatment outcomes improve after smoking cessation. Dental professionals ought to consider smoking cessation interventions as a relevant component of the periodontal therapy.
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Affiliation(s)
- Fábio R M Leite
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Gustavo G Nascimento
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Stina Baake
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Lisa D Pedersen
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Flemming Scheutz
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Rodrigo López
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
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Prietto NR, Martins TM, Santinoni CDS, Pola NM, Ervolino E, Bielemann AM, Leite FRM. Treatment of experimental periodontitis with chlorhexidine as adjuvant to scaling and root planing. Arch Oral Biol 2020; 110:104600. [DOI: 10.1016/j.archoralbio.2019.104600] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/03/2019] [Accepted: 11/03/2019] [Indexed: 11/17/2022]
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Furuse C, Almeida AF, Costa SF, Ervolino-Silva AC, Okamoto R, Sumida DH, Matsumoto MA, Leite FRM. Influence of weight gain on the modulation of wound healing following tooth extraction. Bone 2018; 114:226-234. [PMID: 29935255 DOI: 10.1016/j.bone.2018.06.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 06/14/2018] [Accepted: 06/18/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Cristiane Furuse
- Department of Pathology and Clinical Propedeutics, Araçatuba Dental School, UNESP - São Paulo State University, Araçatuba, São Paulo, Brazil
| | - Aline F Almeida
- School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Sidnei F Costa
- Department of Pathology and Clinical Propedeutics, Araçatuba Dental School, UNESP - São Paulo State University, Araçatuba, São Paulo, Brazil
| | - Ana C Ervolino-Silva
- Department of Pathology and Clinical Propedeutics, Araçatuba Dental School, UNESP - São Paulo State University, Araçatuba, São Paulo, Brazil
| | - Roberta Okamoto
- Department of Basic Sciences, Araçatuba Dental School, UNESP - São Paulo State University, Araçatuba, São Paulo, Brazil
| | - Doris H Sumida
- Department of Basic Sciences, Araçatuba Dental School, UNESP - São Paulo State University, Araçatuba, São Paulo, Brazil
| | - Mariza A Matsumoto
- Department of Basic Sciences, Araçatuba Dental School, UNESP - São Paulo State University, Araçatuba, São Paulo, Brazil
| | - Fábio R M Leite
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.
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Effect of Smoking on Periodontitis: A Systematic Review and Meta-regression. Am J Prev Med 2018; 54:831-841. [PMID: 29656920 DOI: 10.1016/j.amepre.2018.02.014] [Citation(s) in RCA: 253] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 02/02/2018] [Accepted: 02/19/2018] [Indexed: 11/23/2022]
Abstract
CONTEXT The study systematically reviewed articles on the association between tobacco smoking and periodontitis, as it has been hypothesized that smoking affects the course of periodontitis through impairment of immunological and vascular mechanisms. EVIDENCE ACQUISITION Searches of articles indexed in PubMed, Scopus, and Embase were performed up to and including May 2017. Search strategy included MeSH and free terms: periodontitis, periodontal diseases, smoking, tobacco use, tobacco, tobacco products, cigarette, pipe, and cigar. Only original prospective longitudinal studies that investigated the association between smoking and periodontitis incidence or progression were included. Results were shown as combined risk ratio. Meta-regression and subgroup analyses were used to explore potential sources of heterogeneity. Analyses were conducted in August 2017. EVIDENCE SYNTHESIS Twenty-eight studies were included in the review; of these, only 14 presented data that could be included in the meta-analysis. Pooled adjusted risk ratios estimate that smoking increases the risk of periodontitis by 85% (risk ratio=1.85, 95% CI=1.5, 2.2). Meta-regression demonstrated that age explained 54.2% of the variability between studies, time of follow-up explained 13.5%, loss to follow-up 10.7%, criteria used to assess the periodontal status explained 2.1%, and severity of periodontitis explained 16.9%. CONCLUSIONS Smoking has a detrimental effect on the incidence and progression of periodontitis. Tobacco smoking, therefore, is important information that should be assessed along with other risk factors for periodontitis.
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