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Kunka Á, Lisztes E, Bohács J, Racskó M, Kelemen B, Kovalecz G, Tóth ED, Hegedűs C, Bágyi K, Marincsák R, Tóth BI. TRPA1 up-regulation mediates oxidative stress in a pulpitis model in vitro. Br J Pharmacol 2024; 181:3246-3262. [PMID: 38744683 DOI: 10.1111/bph.16386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 01/22/2024] [Accepted: 02/22/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND AND PURPOSE Pulpitis is associated with tooth hypersensitivity and results in pulpal damage. Thermosensitive transient receptor potential (TRP) ion channels expressed in the dental pulp may be key transducers of inflammation and nociception. We aimed at investigating the expression and role of thermo-TRPs in primary human dental pulp cells (hDPCs) in normal and inflammatory conditions. EXPERIMENTAL APPROACH Inflammatory conditions were induced in hDPC cultures by applying polyinosinic:polycytidylic acid (poly(I:C)). Gene expression and pro-inflammatory cytokine release were measured by RT-qPCR and ELISA. Functions of TRPA1 channels were investigated by monitoring changes in intracellular Ca2+ concentration. Mitochondrial superoxide production was measured using a fluorescent substrate. Cellular viability was assessed by measuring the activity of mitochondrial dehydrogenases and cytoplasmic esterases. TRPA1 activity was modified by agonists, antagonists, and gene silencing. KEY RESULTS Transcripts of TRPV1, TRPV2, TRPV4, TRPC5, and TRPA1 were highly expressed in control hDPCs, whereas TRPV3, TRPM2, and TRPM3 expressions were much lower, and TRPM8 was not detected. Poly(I:C) markedly up-regulated TRPA1 but not other thermo-TRPs. TRPA1 agonist-induced Ca2+ signals were highly potentiated in inflammatory conditions. Poly(I:C)-treated cells displayed increased Ca2+ responses to H2O2, which was abolished by TRPA1 antagonists. Inflammatory conditions induced oxidative stress, stimulated mitochondrial superoxide production, resulted in mitochondrial damage, and decreased cellular viability of hDPCs. This inflammatory cellular damage was partly prevented by the co-application of TRPA1 antagonist or TRPA1 silencing. CONCLUSION AND IMPLICATIONS Pharmacological blockade of TRPA1 channels may be a promising therapeutic approach to alleviate pulpitis and inflammation-associated pulpal damage.
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Affiliation(s)
- Árpád Kunka
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, Debrecen, Hungary
- Department of Dentoalveolar Surgery, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Erika Lisztes
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Judit Bohács
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, Debrecen, Hungary
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Márk Racskó
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, Debrecen, Hungary
| | - Balázs Kelemen
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gabriella Kovalecz
- Department of Pediatric and Preventive Dentistry, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Etelka D Tóth
- Department of Dentoalveolar Surgery, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Csaba Hegedűs
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Kinga Bágyi
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Rita Marincsák
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Balázs István Tóth
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Dogan Buzoglu H, Ozcan M, Bozdemir O, Aydin Akkurt KS, Zeybek ND, Bayazit Y. Evaluation of oxidative stress cycle in healthy and inflamed dental pulp tissue: a laboratory investigation. Clin Oral Investig 2023; 27:5913-5923. [PMID: 37642737 DOI: 10.1007/s00784-023-05203-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/09/2023] [Indexed: 08/31/2023]
Abstract
OBJECTIVES The purpose of this study was to investigate the oxidative stress cycle consisting of reactive oxygen molecules (ROS), glutathione (GSH) and glutathione S-transferase (GST) in caries-related pulp inflammation. METHODOLOGY Fifty-four pulp tissue samples were collected from healthy donors with the diagnosis of reversible pulpitis, symptomatic irreversible pulpitis, and healthy pulp. Twelve pulp samples from each group were homogenized and total protein, ROS, GSH, and GST were measured by spectrophotometer. The remaining 6 samples from each group were prepared for paraffin block and used for the histopathologic and immunohistochemical evaluation of oxidative stress parameters and TUNEL labeling. Data were analyzed statistically. RESULTS The results revealed that total protein levels significantly decreased; however, ROS levels increased in both reversible and irreversible pulpitis compared to the healthy pulp (p < 0.01). Also, as inflammation increases, GST enzyme levels decrease while GSH levels increase significantly (p < 0.05). It was found that the number of TUNEL (+) cells was increased in irreversible pulpitis samples compared to healthy and reversible pulpitis groups (p < 0.05). GSTP1 and GSH immunoreactivity were also observed in irreversible pulpitis samples. CONCLUSIONS It has been revealed that caries-related inflammation alters the oxidative stress cycle in dental pulp tissue. The increase in GSH levels in the inflamed dental pulp due to the increase in ROS levels may improve the defensive ability of the dental pulp. CLINICAL RELEVANCE There is a relationship between oxidative stress and inflammation. Control of excessive oxidative stress in pulpitis can stimulate reparative and regenerative processes. The present findings may provide an overview of the management of oxidative stress in cases with pulpitis during regenerative treatments.
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Affiliation(s)
- H Dogan Buzoglu
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Sihhiye, 06230, Ankara, Turkey.
| | - M Ozcan
- Department of Medical Biochemistry, Faculty of Medicine, Zonguldak Bulent Ecevit University, Zonguldak, Turkey
| | - O Bozdemir
- Department of Stem Cell Sciences, Graduate School of Health Sciences, Hacettepe University, Ankara, Turkey
| | - K S Aydin Akkurt
- Department of Histology & Embryology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - N D Zeybek
- Department of Histology & Embryology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Y Bayazit
- Department of Medical Biochemistry, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Wang Y, Xie Q, Yu H, Zhou B, Guo X, Wu B, Hu J. Establishment and validation of the autophagy-related ceRNA network in irreversible pulpitis. BMC Genomics 2023; 24:268. [PMID: 37208635 DOI: 10.1186/s12864-023-09363-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/06/2023] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND The molecular mechanisms underlying the onset and progression of irreversible pulpitis have been studied for decades. Many studies have indicated a potential correlation between autophagy and this disease. Against the background of the competing endogenous RNA (ceRNA) theory, protein-coding RNA functions are linked with long noncoding RNAs (lncRNAs) and microRNAs (miRNAs). This mechanism has been widely studied in various fields but has rarely been reported in the context of irreversible pulpitis. The hub genes selected under this theory may represent the key to the interaction between autophagy and irreversible pulpitis. RESULTS Filtering and differential expression analyses of the GSE92681 dataset, which contains data from 7 inflamed and 5 healthy pulp tissue samples, were conducted. The results were intersected with autophagy-related genes (ARGs), and 36 differentially expressed ARGs (DE-ARGs) were identified. Functional enrichment analysis and construction of the protein‒protein interaction (PPI) network of DE-ARGs were performed. Coexpression analysis was conducted between differentially expressed lncRNAs (DElncRNAs) and DE-ARGs, and 151 downregulated and 59 upregulated autophagy-related DElncRNAs (AR-DElncRNAs) were identified. StarBase and multiMiR were then used to predict related microRNAs of AR-DElncRNAs and DE-ARGs, respectively. We established ceRNA networks including 9 hub lncRNAs (HCP5 and AC112496.1 ↑; FENDRR, AC099850.1, ZSWIM8-AS1, DLX6-AS1, LAMTOR5-AS1, TMEM161B-AS1 and AC145207.5 ↓), which were validated by a qRT‒PCR analysis of pulp tissue from patients with irreversible pulpitis. CONCLUSION We constructed two networks consisting of 9 hub lncRNAs based on the comprehensive identification of autophagy-related ceRNAs. This study may provide novel insights into the interactive relationship between autophagy and irreversible pulpitis and identifies several lncRNAs that may serve as potential biological markers.
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Affiliation(s)
- Ye Wang
- Shenzhen Stomatology Hospital (Pingshan) of Southern Medical University, Shenzhen, 518118, China
| | - Qiuyan Xie
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Hongwen Yu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Bangyi Zhou
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Xiaolan Guo
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Buling Wu
- Shenzhen Stomatology Hospital (Pingshan) of Southern Medical University, Shenzhen, 518118, China
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jiao Hu
- Changsha Stomatological Hospital, Changsha, 410000, China.
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Aslantas EE, Buzoglu HD, Muftuoglu SF, Atilla P, Karapinar SP, Aksoy Y. Effects of aging and inflammation on catalase activity in human dental pulp. Arch Oral Biol 2022; 141:105482. [PMID: 35728513 DOI: 10.1016/j.archoralbio.2022.105482] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES In this study, it was aimed to examine the catalase activity in clinically healthy and caries-related inflamed symptomatic human dental pulps of young and old individuals. DESIGN Sixty pulp samples from young and old healthy donors, were collected depending on pulpal status. 48 samples were used for spectrophotometric analysis and 12 samples for immunohistochemistry. Healthy pulps were maintained from non-carries, extracted third molars. Reversible and irreversible pulpitis samples were obtained by pulp extirpation during endodontic treatment. Following homogenization catalase enzyme activity was determined by spectrophotometry. Additionally, two pulp tissue samples from each group were fixed and evaluated for catalase immunoreactivity. RESULTS Catalase enzyme activity in old healthy pulp samples were significantly higher than healthy young samples (p ≤ 0.05). Reversible and irreversible pulpitis samples indicated significantly decreased activity compared to healthy samples in elderly group (p ≤ 0.05). Young reversible pulpitis samples showed significantly increased catalase activity when compared to irreversible pulpitis and the reversible pulpitis samples in elderly group (p ≤ 0.05). Immunohistochemical evaluation indicated that there was intense catalase immunoreactivity in young patients with reversible pulpitis compared with reversible pulpitis in elderly group. However, weak immunoreactivity was observed in young irreversible pulpitis and elderly reversible pulpitis samples. CONCLUSIONS The pulp tissues presented different levels of catalase activities against pulpitis and aging.
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Affiliation(s)
- Eda Ezgi Aslantas
- Department of Endodontics, Hacettepe University, Faculty of Dentistry, Ankara, Turkey
| | - Hatice Dogan Buzoglu
- Department of Endodontics, Hacettepe University, Faculty of Dentistry, Ankara, Turkey
| | - Sevda Fatma Muftuoglu
- Department of Histology and Embriology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Pergin Atilla
- Department of Histology and Embriology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | | | - Yasemin Aksoy
- Department of Medical Biochemistry, Hacettepe University Faculty of Medicine, Ankara, Turkey.
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Li H, Zhang X, Gu L, Li Q, Ju Y, Zhou X, Hu M, Li Q. Anti-Gout Effects of the Medicinal Fungus Phellinus igniarius in Hyperuricaemia and Acute Gouty Arthritis Rat Models. Front Pharmacol 2022; 12:801910. [PMID: 35087407 PMCID: PMC8787200 DOI: 10.3389/fphar.2021.801910] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/16/2021] [Indexed: 12/23/2022] Open
Abstract
Background:Phellinus igniarius (P. igniarius) is an important medicinal and edible fungus in China and other Southeast Asian countries and has diverse biological activities. This study was performed to comparatively investigate the therapeutic effects of wild and cultivated P. igniarius on hyperuricaemia and gouty arthritis in rat models. Methods: UPLC-ESI-qTOF-MS was used to identify the chemical constituents of polyphenols from wild P. igniarius (WPP) and cultivated P. igniarius (CPP). Furthermore, WPP and CPP were evaluated in an improved hyperuricaemia rat model induced by yeast extract, adenine and potassium oxonate, which was used to examine xanthine oxidase (XO) activity inhibition and anti-hyperuricemia activity. WPP and CPP therapies for acute gouty arthritis were also investigated in a monosodium urate (MSU)-induced ankle swelling model. UHPLC-QE-MS was used to explore the underlying metabolic mechanisms of P. igniarius in the treatment of gout. Results: The main active components of WPP and CPP included protocatechuic aldehyde, hispidin, davallialactone, phelligridimer A, hypholomine B and inoscavin A as identified by UPLC-ESI-qTOF-MS. Wild P. igniarius and cultivated P. igniarius showed similar activities in reducing uric acid levels through inhibiting XO activity and down-regulating the levels of UA, Cr and UN, and they had anti-inflammatory activities through down-regulating the secretions of ICAM-1, IL-1β and IL-6 in the hyperuricaemia rat model. The pathological progression of kidney damage was also reversed. The polyphenols from wild and cultivated P. igniarius also showed significant anti-inflammatory activity by suppressing the expression of ICAM-1, IL-1β and IL-6 and by reducing the ankle joint swelling degree in an MSU-induced acute gouty arthritis rat model. The results of metabolic pathway enrichment indicated that the anti-hyperuricemia effect of WPP was mainly related to the metabolic pathways of valine, leucine and isoleucine biosynthesis and histidine metabolism. Additionally, the anti-hyperuricemia effect of CPP was mainly related to nicotinate and nicotinamide metabolism and beta-alanine metabolism. Conclusions: Wild P. igniarius and cultivated P. igniarius both significantly affected the treatment of hyperuricaemia and acute gouty arthritis models in vivo and therefore may be used as potential active agents for the treatment of hyperuricaemia and acute gouty arthritis.
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Affiliation(s)
- Hongxing Li
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Xinyue Zhang
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Lili Gu
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Qín Li
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Yue Ju
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Xuebin Zhou
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Min Hu
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Qīn Li
- School of Pharmacy, Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
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Role of Lipopolysaccharide, Derived from Various Bacterial Species, in Pulpitis—A Systematic Review. Biomolecules 2022; 12:biom12010138. [PMID: 35053286 PMCID: PMC8774278 DOI: 10.3390/biom12010138] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 02/06/2023] Open
Abstract
Lipopolysaccharide (LPS) is widely used for induction of inflammation in various human tissues, including dental pulp. The purpose of this study was to summarize current medical literature focusing on (1) cell types used by researchers to simulate dental pulp inflammation, (2) LPS variants utilized in experimental settings and how these choices affect the findings. Our study was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We searched for studies reporting outcomes of lipopolysaccharide application on dental pulp cells in vitro using electronic databases: MEDLINE, Web of Science and Scopus. Having gathered data from 115 papers, we aimed to present all known effects LPS has on different cell types present in dental pulp. We focused on specific receptors and particles that are involved in molecular pathways. Our review provides an essential foundation for further research using in vitro models of pulpitis.
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Lovász BV, Lempel E, Szalma J, Sétáló G, Vecsernyés M, Berta G. Influence of TEGDMA monomer on MMP-2, MMP-8, and MMP-9 production and collagenase activity in pulp cells. Clin Oral Investig 2021; 25:2269-2279. [PMID: 32845470 PMCID: PMC7966645 DOI: 10.1007/s00784-020-03545-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 08/20/2020] [Indexed: 01/06/2023]
Abstract
OBJECTIVES Resin-based composites may leach monomers such as triethylene-glycol dimethacrylate (TEGDMA), which could contribute to intrapulpal inflammation. The aim of this investigation was to examine whether various concentrations of TEGDMA are able to influence dentally relevant Matrix metalloproteinase (MMP)-2, MMP-8, and MMP-9 production, total collagenase/gelatinase activity in pulp cells, and suggest possible signaling mechanisms. MATERIALS AND METHODS Pulp cells were cultured, followed by a 1-day exposure to sublethal TEGDMA concentrations (0.1, 0.2, and 0.75 mM). Total MMP activity was measured by an EnzCheck total collagenase/gelatinase assay, while the production of specific MMPs and the relative changes of phosphorylated, i.e., activated signaling protein levels of extracellular signal-regulated kinase (ERK)1/2, p38, c-Jun N-terminal kinase (JNK) were identified by western blot. Immunocytochemistry image data was also plotted and analyzed to see whether TEGDMA could possibly alter MMP production. RESULTS An increase in activated MMP-2, MMP-8, and MMP-9 production as well as total collagenase activity was seen after a 24-h exposure to the abovementioned TEGDMA concentrations. Increase was most substantial at 0.1 (P = 0.002) and 0.2 mM (P = 0.0381). Concurrent p-ERK, p-p38, and p-JNK elevations were also detected. CONCLUSIONS Results suggest that monomers such as TEGDMA, leached from resin-based restorative materials, activate and induce the production of dentally relevant MMPs in pulp cells. Activation of ERK1/2, p38, or JNK and MMP increase may play a role in and/or can be part of a broader stress response. Clinical relevance Induction of MMP production and activity may further be components in the mechanisms of intrapulpal monomer toxicity.
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Affiliation(s)
- Bálint Viktor Lovász
- Department of Oral and Maxillofacial Surgery, University of Pécs Medical School, 5 Dischka Gy. St, Pécs, 7621, Hungary.
| | - Edina Lempel
- Department of Conservative Dentistry and Periodontology, University of Pécs Medical School, 5 Dischka Gy. St, Pécs, 7621, Hungary
| | - József Szalma
- Department of Oral and Maxillofacial Surgery, University of Pécs Medical School, 5 Dischka Gy. St, Pécs, 7621, Hungary
| | - György Sétáló
- Department of Medical Biology and Central Electron Microscope Laboratory, University of Pécs Medical School, 12 Szigeti St, Pécs, 7624, Hungary
| | - Mónika Vecsernyés
- Department of Medical Biology and Central Electron Microscope Laboratory, University of Pécs Medical School, 12 Szigeti St, Pécs, 7624, Hungary
| | - Gergely Berta
- Department of Medical Biology and Central Electron Microscope Laboratory, University of Pécs Medical School, 12 Szigeti St, Pécs, 7624, Hungary
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Zhao Y, Zheng W. Deciphering the antitumoral potential of the bioactive metabolites from medicinal mushroom Inonotus obliquus. JOURNAL OF ETHNOPHARMACOLOGY 2021; 265:113321. [PMID: 32877719 DOI: 10.1016/j.jep.2020.113321] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 08/09/2020] [Accepted: 08/22/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The crude extracts of the medicinal mushroom Inonotus obliquus have been used as an effective traditional medicine to treat malicious tumors, gastritis, gastric ulcers, and other inflammatory conditions in Russia and most Baltic countries. AIM OF THIS REVIEW Deciphering the antitumoral potential of the bioactive metabolites from I. obliquus and addressing its possibility to be used as effective agents for tumor treatment, restoration of compromised immunity and protection of gastrointestinal damage caused by chemotherapy. MATERIALS AND METHODS We analysed the current achievements and dilemma in tumor chemo- or immunotherapy. In this context, we searched the published literatures on I. obliquus covering from 1990 to 2020, and summarized the activities of antitumor, antioxidation, and immunomodulation by the polysaccharides, triterpenoids, small phenolic compounds, and hispidin polyphenols. By comparing the merits and shortcomings of current and traditional methodology for tumor treatment, we further addressed feasibility for the use of I. obliquus as an effective natural drug for tumor treatment and prevention. RESULTS The diverse bioactive metabolites confer I. obliquus great potential to inhibit tumor growth and metastasis. Its antitumor activities are achieved either through suppressing multiple oncogenic signals including but not limited to the activation of NF-κB and FAK, and the expression of RhoA/MMP-9 via ERK1/2 and PI3K/Akt signaling pathway. The antitumor activities can also be achieved by inhibiting tyrosinase activity via PAK1-dependent signaling pathway or altering lysosomal membrane permeabilization through blocking tubulin polymerization and/or disturbing energy metabolism through LKB1/AMPK pathway. In addition, the metabolites from I. obliquus also harbour the potentials to reverse MDR either through selective inhibition on P-gp/ABCB1 or MRP1/ABCC1 proteins or the induction of G2/M checkpoint arrest in tumor cells of chemoresistant phenotypes mediated by Nox/ROS/NF-kB/STAT3 signaling pathway. In addition to the eminent effects in tumor inhibition, the metabolites in I. obliquus also exhibit immunomodulatory potential to restore the compromised immunity and protect against ulcerative damage of GI tract caused by chemotherapy. CONCLUSIONS I. obliquus possesses the potential to reduce incidence of tumorigenesis in healthy people. For those whose complete remission has been achieved by chemotherapy, administration of the fungus will inhibit the activation of upstream oncogenic signals and thereby prevent metastasis; for those who are in the process of chemotherapy administration of the fungus will not only chemosensitize the tumor cells and thereby increasing the chemotherapeutic effects, but also help to restore the compromised immunity and protect against ulcerative GI tract damage and other side-effects induced by chemotherapy.
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Affiliation(s)
- Yanxia Zhao
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Weifa Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China.
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Liu C, Ma X, Zhuang J, Liu L, Sun C. Cardiotoxicity of doxorubicin-based cancer treatment: What is the protective cognition that phytochemicals provide us? Pharmacol Res 2020; 160:105062. [DOI: 10.1016/j.phrs.2020.105062] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022]
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Yang K, Zhang S, Ying Y, Li Y, Cai M, Guan R, Hu J, Sun P. Cultivated Fruit Body of Phellinus baumii: A Potentially Sustainable Antidiabetic Resource. ACS OMEGA 2020; 5:8596-8604. [PMID: 32337422 PMCID: PMC7178366 DOI: 10.1021/acsomega.9b04478] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 03/26/2020] [Indexed: 05/06/2023]
Abstract
Previous studies have been reported that the fruit body of wild Phellinus baumii alleviates diabetes, and antioxidants are beneficial to diabetes by protecting the β-cell from damage due to oxidative stress. Large-scale cultivation of P. baumii fruit body has been successful in the past decade. This paper aimed to investigate whether the fruit body of the cultivated P. baumii has the same analogical effects as the wild. The cultivated P. baumii fruit body was extracted by 80% of ethanol extracts, and different fractions were obtained with the successive use of petroleum ether, ethyl acetate (EtOAc), n-butanol (n-BuOH), and water, which yielded 15.98 ± 1.56, 1.74 ± 0.34, 3.31 ± 0.41, 4.12 ± 0.37, and 1.38 ± 0.26% extract recovery, respectively. Results show that the EtOAc fraction exhibits the highest inhibitory effect on α-glucosidase activity (IC50 = 49.05 ± 3.14 μg mL-1), which is an order of magnitude higher than the positive control (acarbose, IC50 = 645.73 ± 7.86 μg mL-1). It was mainly composed of phenolic compounds with a purity of 79.45% and characterized by liquid chromatography-mass spectrometry as osmudacetone, hispidin, davallialactone, 2,5-bis(4,7-dihydroxy-8-methyl-2-oxo-2H-chromen-3-yl)cyclohexa-2,5-diene-1,4-dione, hypholomin B, and inoscavin A. Furthermore, the EtOAc fraction increased the glucose consumption of insulin-resistant HepG2 cells at a concentration range of 25-100 μg mL-1. The EtOAc fraction also demonstrated antioxidant activities by scavenging 1,1-diphenyl-2-picrylhydrazyl, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)diammonium salt, and hydroxyl radicals. In conclusion, the EtOAc fraction of the cultivated P. baumii fruit body exerted effective antidiabetic effects, possibly due to the high content of selective phenolic compounds. Hence, the cultivated fruit body of P. baumii can be a sustainable resource for treating diabetes, and our work also shed some light on its future utilization.
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Affiliation(s)
- Kai Yang
- College
of Food Science and Technology, Zhejiang
University of Technology, Hangzhou 310014, P. R. China
| | - Su Zhang
- College
of Food Science and Technology, Zhejiang
University of Technology, Hangzhou 310014, P. R. China
| | - Youmin Ying
- College
of Pharmaceutical Science, Zhejiang University
of Technology, Hangzhou 310014, P. R. China
| | - Yougui Li
- Sericultural
Research Institute, Zhejiang Academy of
Agricultural Sciences, Hangzhou 310021, P. R. China
| | - Ming Cai
- College
of Food Science and Technology, Zhejiang
University of Technology, Hangzhou 310014, P. R. China
| | - Rongfa Guan
- College
of Food Science and Technology, Zhejiang
University of Technology, Hangzhou 310014, P. R. China
| | - Junrong Hu
- Research
Institute of Food Science, Hangzhou Wahaha
Group Company Ltd., Hangzhou 310018; P. R. China
| | - Peilong Sun
- College
of Food Science and Technology, Zhejiang
University of Technology, Hangzhou 310014, P. R. China
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An S. Nitric Oxide in Dental Pulp Tissue: From Molecular Understanding to Clinical Application in Regenerative Endodontic Procedures. TISSUE ENGINEERING PART B-REVIEWS 2020; 26:327-347. [PMID: 32131706 DOI: 10.1089/ten.teb.2019.0316] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nitric oxide (NO), which is synthesized by the enzyme NO synthase (NOS), is a versatile endogenous molecule with multiple biological effects on many tissues and organs. In dental pulp tissue, NO has been found to play multifaceted roles in regulating physiological activities, inflammation processes, and tissue repair events, such as cell proliferation, neuronal degeneration, angiogenesis, and odontoblastic differentiation. However, there is a deficiency of detailed discussion on the NO-mediated interactions between inflammation and reparative/regenerative responses in wounded dental pulp tissue, which is a central determinant of ultimate clinical outcomes. Thus, the purpose of this review is to outline the current molecular understanding on the roles of Janus-faced molecule NO in dental pulp physiology, inflammation, and reparative activities. Based on this knowledge, advanced physicochemical techniques designed to manipulate the therapeutic potential of NOS and NO production in endodontic regeneration procedures are further discussed. Impact statement The interaction between inflammation and reparative/regenerative responses is very important for regenerative endodontic procedures, which are biologically based approaches intended to replace damaged tissues. Inside dental pulp tissue, endogenous nitric oxide (NO) is generated mainly by immunocompetent cells and dental pulp cells and mediates not only inflammatory/immune activities but also signaling cascades that regulate tissue repair and reconstruction, indicating its involvement in both tissue destruction and regeneration. Thus, it is feasible that NO acts as one of the indicators and modulators in dental pulp repair or regeneration under physiological and pathological conditions.
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Affiliation(s)
- Shaofeng An
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, P.R. China.,Guangdong Province Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, P.R. China
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Huang S, Zheng B, Jin X, Yu Q, Zhang X, Sun X, Chen Y, Ren X, Wismeijer D, Ma J, Zhang C, Wu G, Pan Y. Blockade of Cyclophilin D Attenuates Oxidative Stress-Induced Cell Death in Human Dental Pulp Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1729013. [PMID: 31089403 PMCID: PMC6476071 DOI: 10.1155/2019/1729013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 01/03/2019] [Accepted: 02/16/2019] [Indexed: 12/13/2022]
Abstract
Pathological stimuli, such as bacterial activity, dental bleaching, and nonpolymerized resin monomers, can cause death of dental pulp cells (DPCs) through oxidative stress- (OS-) induced mitochondrial dysfunction. However, the crucial molecular mechanisms that mediate such a phenomenon remain largely unknown. OS is characterized by the overproduction of reactive oxygen species (ROS), e.g., H2O2, O2 -, and ·OH. Mitochondria are a major source of ROS and the principal attack target of ROS. Cyclophilin D (CypD), as the only crucial protein for mitochondrial permeability transition pore (mPTP) induction, facilitates the opening of mPTP and causes mitochondrial dysfunction, leading to cell death. In the present study, we hypothesized that CypD-mediated mitochondrial molecular pathways were closely involved in the process of OS-induced death of human DPCs (HDPCs). We tested the phenotypic and molecular changes of HDPCs in a well-established OS model-H2O2 treatment. We showed that H2O2 dramatically reduced the viability and increased the death of HDPCs in a time- and dose-dependent manner by performing MTT, flow cytometry, and TUNEL assays and quantifying the expression changes of Bax and Bcl-2 proteins. H2O2 also induced mitochondrial dysfunction, as reflected by the increased mitochondrial ROS, reduced ATP production, and activation of mPTP (decreased mitochondrial membrane potential and enhanced intracellular Ca2+ level). An antioxidant (N-acetyl-L-cysteine) effectively preserved mitochondrial function and significantly attenuated H2O2-induced cytotoxicity and death. Moreover, H2O2 treatment markedly upregulated the CypD protein level in HDPCs. Notably, genetic or pharmacological blockade of CypD significantly attenuated H2O2-induced mitochondrial dysfunction and cell death. These findings provided novel insights into the role of a CypD-dependent mitochondrial pathway in the H2O2-induced death in HDPCs, indicating that CypD may be a potential therapeutic target to prevent OS-mediated injury in dental pulp.
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Affiliation(s)
- Shengbin Huang
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, Netherlands
| | - Bingbing Zheng
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Department of Endodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Xing Jin
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Department of Endodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Qihao Yu
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Department of Endodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Xiaorong Zhang
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Department of Endodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Xiaoyu Sun
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Yuting Chen
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Xuerui Ren
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Department of Endodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Daniel Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, Netherlands
| | - Jianfeng Ma
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Chengfei Zhang
- Comprehensive Dental Care, Endodontics, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, Netherlands
| | - Yihuai Pan
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
- Department of Endodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
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Kim JE, Takanche JS, Kim JS, Lee MH, Jeon JG, Park IS, Yi HK. Phelligridin D-loaded oral nanotube titanium implant enhances osseointegration and prevents osteolysis in rat mandible. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:397-407. [DOI: 10.1080/21691401.2018.1458033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ji-Eun Kim
- Departments of Oral Biochemistry, Chonbuk National University, Jeonju, South Korea
| | | | - Jeong-Seok Kim
- Departments of Oral Biochemistry, Chonbuk National University, Jeonju, South Korea
| | - Min-Ho Lee
- Departments of Dental Materials, Chonbuk National University, Jeonju, South Korea
| | - Jae-Gyu Jeon
- Departments of Preventive Dentistry, Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, South Korea
| | - Il-Song Park
- Division of Advanced Materials Engineering, Chonbuk National University, Jeonju, South Korea
| | - Ho-Keun Yi
- Departments of Oral Biochemistry, Chonbuk National University, Jeonju, South Korea
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Takanche JS, Lee YH, Kim JS, Kim JE, Han SH, Lee SW, Yi HK. Anti-inflammatory and antioxidant properties of Schisandrin C promote mitochondrial biogenesis in human dental pulp cells. Int Endod J 2017; 51:438-447. [PMID: 28898431 DOI: 10.1111/iej.12861] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 09/07/2017] [Indexed: 01/30/2023]
Abstract
AIM To examine the properties of Schisandrin C as an anti-inflammatory and antioxidant compound, and whether its characteristics promote mitochondrial biogenesis in human dental pulp cells (HDPCs). METHODOLOGY HDPCs were extracted from fresh third molars and cultured for experiments. Reactive oxidative stress (ROS) and nitric oxide (NO) formation were analysed by a Muse cell analyser. Western blotting and gelatin zymography were used to identify the presence of antioxidants, as well as anti-inflammatory and mitochondrial biogenesis with specific antibody. An unpaired Student's t-test was used for statistical analysis. RESULTS Schisandrin C inhibited lipopolysaccharide-stimulated inflammatory molecules; interleukin 1 beta, tumour necrosis factor alpha, intracellular adhesion molecule-1, vascular cell adhesion molecule-1, matrix metalloproteinase-2 and -9, NO production, ROS formation, nuclear factor kappa B translocation (P < 0.05) through the mitogen-activated protein kinase pathway. Schisandrin C increased the expression of superoxide dismutase enzymes as well as haem oxygenase-1 and peroxisome proliferator-activated receptor gamma coactivator 1-alpha through the phosphorylated-protein kinase B (p-Akt) and nuclear factor erythroid 2-related factor-2 pathways (P < 0.05). The anti-inflammatory and antioxidant properties of Schisandrin C promoted mitochondrial biogenesis. CONCLUSIONS Schisandrin C has the potential to reduce inflammation and oxidation and to promote mitochondrial biogenesis. Therefore, Schisandrin C may be considered for use as an anti-inflammatory compound for oral inflammation through mitochondrial biogenesis.
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Affiliation(s)
- J S Takanche
- BK21 Program, Department of Oral Biochemistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Y-H Lee
- BK21 Program, Department of Oral Biochemistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - J-S Kim
- BK21 Program, Department of Oral Biochemistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - J-E Kim
- BK21 Program, Department of Oral Biochemistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - S-H Han
- Department of Herbal Crop Research, National Institute of Horticultural & Herbal Science, Eumsung, Korea
| | - S-W Lee
- Department of Herbal Crop Research, National Institute of Horticultural & Herbal Science, Eumsung, Korea
| | - H-K Yi
- BK21 Program, Department of Oral Biochemistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
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Anti-inflammation performance of curcumin-loaded mesoporous calcium silicate cement. J Formos Med Assoc 2017; 116:679-688. [DOI: 10.1016/j.jfma.2017.06.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/26/2017] [Accepted: 06/07/2017] [Indexed: 12/18/2022] Open
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Sueyama Y, Kaneko T, Ito T, Okiji T. Effect of lipopolysaccharide stimulation on stem cell-associated marker-expressing cells. Int Endod J 2017; 51 Suppl 2:e107-e114. [DOI: 10.1111/iej.12740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 12/08/2016] [Indexed: 01/05/2023]
Affiliation(s)
- Y. Sueyama
- Division of Cariology; Operative Dentistry and Endodontics; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - T. Kaneko
- Pulp Biology and Endodontics; Graduate School; Tokyo Medical and Dental University; Tokyo Japan
| | - T. Ito
- Division of Cariology; Operative Dentistry and Endodontics; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - T. Okiji
- Pulp Biology and Endodontics; Graduate School; Tokyo Medical and Dental University; Tokyo Japan
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Arun S, Sampath V, Mahalaxmi S, Rajkumar K. A Comparative Evaluation of the Effect of the Addition of Pachymic Acid on the Cytotoxicity of 4 Different Root Canal Sealers-An In Vitro Study. J Endod 2016; 43:96-99. [PMID: 27847138 DOI: 10.1016/j.joen.2016.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/31/2016] [Accepted: 09/04/2016] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Root canal sealers exhibit varying degrees of cytotoxicity to periapical tissues. This in turn results in inflammation, delayed wound healing, and even bone resorption. This study aimed to explore the effect of the addition of an antioxidant like pachymic acid on the cytotoxicity of 4 root canal sealers, namely, Tubliseal (Kerr, Romulus, MI), a zinc oxide eugenol-based sealer; AH Plus (Dentsply De Trey GmbH, Konstanz, Germany), an epoxy resin-based sealer; Sealapex (Kerr), a calcium hydroxide-based sealer; and EndoREZ (Ultradent Products, South Jordan, UT), a methacrylate resin-based sealer. METHODS Sealers mixed according to the manufacturers' instructions formed the experimental groups. Subgroups were determined based on the absence (subgroup A) or addition (subgroup B) of pachymic acid. The experimental sealers were added to L929 mouse fibroblast cells immediately after mixing. Cell viability was evaluated by methylthiazoletetrazolium assay after 24 hours. Data were analyzed using 1-way analysis of variance. Intergroup comparisons were performed using the Kruskal-Wallis test, and intragroup comparisons were done using independent t and post hoc tests. RESULTS All 4 sealers were cytotoxic but to varying degrees. In both the subgroups, Sealapex exhibited the lowest cytotoxicity followed by AH Plus, Tubliseal, and EndoREZ (P < .05). The addition of pachymic acid reduced the cytotoxicity of all the sealers except that of EndoREZ (P > .05). CONCLUSIONS Calcium hydroxide-based Sealapex showed the least cytotoxicity compared with the other sealers. Pachymic acid could be a viable therapeutic agent to overcome the potential adverse effects associated with root canal sealers.
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Affiliation(s)
- Senthamilselvan Arun
- Department of Conservative Dentistry and Endodontics, Vinayaka Missions Dental College, Salem, India
| | - Vidhya Sampath
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Bharathi Salai, Ramapuram, Chennai, India.
| | - Sekar Mahalaxmi
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Bharathi Salai, Ramapuram, Chennai, India
| | - Kothandaraman Rajkumar
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Bharathi Salai, Ramapuram, Chennai, India
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PPARγ regulates inflammatory reaction by inhibiting the MAPK/NF-κB pathway in C2C12 skeletal muscle cells. J Physiol Biochem 2016; 73:49-57. [DOI: 10.1007/s13105-016-0523-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 09/21/2016] [Indexed: 11/26/2022]
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Lee YH, Lee SJ, Jung JE, Kim JS, Lee NH, Yi HK. Terrein reduces age-related inflammation induced by oxidative stress through Nrf2/ERK1/2/HO-1 signalling in aged HDF cells. Cell Biochem Funct 2015; 33:479-86. [PMID: 26416516 DOI: 10.1002/cbf.3145] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/15/2015] [Accepted: 08/26/2015] [Indexed: 12/15/2022]
Abstract
This study investigated whether multiple bioactivity of terrein such as anti-inflammatory and anti-oxidant inhibits age-related inflammation by promoting an antioxidant response in aged human diploid fibroblast (HDF) cells. HDF cells were cultured serially for in vitro replicative senescence. To create the ageing cell phenotype, intermediate stage (PD31) HDF cells were brought to stress-induced premature senescence (SIPS) using hydrogen peroxide (H2 O2). Terrein increased cell viability even with H2O2 stress and reduced inflammatory molecules such as intracellular adhesion molecule-1 (ICAM-1), cyclooxygenase-2 (COX-2), interleukin-1beta (IL-1β) and tumour necrosis factor-alpha (TNF-α). Terrein reduced also phospho-extracellular kinase receptor1/2 (p-EKR1/2) signalling in aged HDF cells. SIPS cells were attenuated for age-related biological markers including reactive oxygen species (ROS), senescence associated beta-galactosidase (SA β-gal.) and the aforementioned inflammatory molecules. Terrein induced the induction of anti-oxidant molecules, copper/zinc-superoxide defence (Cu/ZnSOD), manganese superoxide dismutase (MnSOD) and heme oxygenase-1 (HO-1) in SIPS cells. Terrein also alleviated reactive oxygen species formation through the Nrf2/HO-1/p-ERK1/2 pathway in aged cells. The results indicate that terrein has an alleviative function of age-related inflammation characterized as an anti-oxidant. Terrein might be a useful nutraceutical compound for anti-ageing.
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Affiliation(s)
- Young-Hee Lee
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Sook-Jeong Lee
- Department of New Drug Discovery and Development, Chungnam National University, Daejeon, Korea
| | - Ji-Eun Jung
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Jeong-Seok Kim
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Nan-Hee Lee
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Ho-Keun Yi
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Korea
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Shao HJ, Jeong JB, Kim KJ, Lee SH. Anti-inflammatory activity of mushroom-derived hispidin through blocking of NF-κB activation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:2482-2486. [PMID: 25355452 DOI: 10.1002/jsfa.6978] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 07/16/2014] [Accepted: 10/23/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND Hispidin, a polyphenol compound mainly derived from the valuable medicinal mushroom Phellinus species, has been found to possess distinct biological effects. However, the anti-inflammatory potential of hispidin still remains uncharacterized. RESULTS In this study, the effects of hispidin on activation of nuclear factor kappa B (NF-κB) and the subsequent production of inducible nitric oxide synthase (iNOS) were determined in the lipopolysaccharide (LPS)-induced macrophage RAW 264.7 cells. Our data indicated that hispidin inhibits transcriptional activity of NF-κB in a dose-dependent manner. Hispidin also attenuated LPS-induced NF-κB nuclear translocation and associated inhibitor of kappa B (IκB-α) degradation. Furthermore, hispidin deceased iNOS protein expression and the generation of reactive oxygen species (ROS) in the LPS-induced cells, but did not affect phosphorylation of mitogen-activated protein kinases. CONCLUSION These findings suggest that hispidin exhibits anti-inflammatory activity through suppressing ROS mediated NF-κB pathway in mouse macrophage cells.
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Affiliation(s)
- Hong Jun Shao
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
- College of Food Engineering and Nutrition Science, Shaanxi Normal University, Xi'an, 741609, P.R. China
| | - Jin Boo Jeong
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Kui-Jin Kim
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Seong-Ho Lee
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
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Paudel U, Lee YH, Kwon TH, Park NH, Yun BS, Hwang PH, Yi HK. Eckols reduce dental pulp inflammation through the ERK1/2 pathway independent of COX-2 inhibition. Oral Dis 2014; 20:827-32. [PMID: 24924779 DOI: 10.1111/odi.12266] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/31/2014] [Accepted: 05/20/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The aim of this study was to elucidate the role of 6-6 bieckol (EB1) and pholorofucofuroeckol-A (EB5) from brown seaweed marine algae (Eisenia bicyclis) on lipopolysaccharide (LPS)-induced inflammation in human dental pulp cells (HDPCs). METHODS The cytotoxicity of EB1 and EB5 was examined by MTT assay on LPS-induced human dental pulp cells. Their role on expression of inflammatory, odontogenic, and osteogenic molecules was determined by Western blot analysis. The dentin mineralization was checked by alkaline phosphatase activity. RESULTS The five compounds from E. bicyclis have different structure with non-cytotoxic in HDPCs. EB1 and EB5 showed anti-inflammatory properties and inhibited phosphorylated-extracellular signal-regulated kinase (p-ERK1/2) and phosphorylated-c-jun N-terminal kinases (p-JNK) without any cytotoxicity. In particular, EB1 inhibited cyclooxygenase-2 (COX-2) and p-ERK1/2 signaling, and EB5 inhibited only p-ERK1/2 signaling but not COX-2. Both compounds inhibited nuclear factor kappa-B (NF-κB) translocation. Furthermore, EB1 and EB5 increased dentinogenic and osteogenic molecules, and dentin mineralized via alkaline phosphatase activity (ALP) in LPS-induced HDPCs. CONCLUSIONS This study elucidates that EB1 and EB5 have different types of anti-inflammatory property and help in dentin formation. Therefore, these compounds derived from marine algae of E. bicyclis may be used as selective therapeutic strategies for pulpitis and oral diseases.
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Affiliation(s)
- U Paudel
- Department of Oral Biochemistry, Institute of Oral Bioscience, BK21 program, School of Dentistry, Chonbuk National University, Jeonju, Korea
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An evaluation of the inflammatory response of lipopolysaccharide-treated primary dental pulp cells with regard to calcium silicate-based cements. Int J Oral Sci 2014; 6:94-8. [PMID: 24556955 PMCID: PMC5130057 DOI: 10.1038/ijos.2014.5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2013] [Indexed: 01/23/2023] Open
Abstract
This study compared the biological changes of lipopolysaccharide (LPS)-treated dental pulp (DP) cells directly cultured on mineral trioxide aggregate (MTA) and calcium silicate (CS) cements. DP cells were treated with LPS for 24 h. Then, the LPS-treated DP cells were cultured on MTA or CS cements. Cell viability, cell death mechanism and interleukin (IL)-1β expressions were analysed. A one-way analysis of variance was used to evaluate the significance of the differences between the means. A significantly higher IL-1β expression (2.9-fold) was found for LPS-treated cells (P<0.05) compared with DP cells without LPS treatment at 24 h. Absorbance values of LPS-treated cells cultured on CS cement were higher than a tissue culture plate. A significant difference (P<0.05) in cell viability was observed between cells on CS and MTA cements 24 h after seeding. At 48 h, a high concentration of Si (5 mM) was released from MTA, which induced LPS-treated DP cell apoptosis. The present study demonstrates that CS cement is biocompatible with cultured LPS-treated DP cells. MTA stimulates inflammation in LPS-treated DP cells, which leads to greater IL-1β expression and apoptosis.
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Davallialactone Reduces Inflammation and Repairs Dentinogenesis on Glucose Oxidase–induced Stress in Dental Pulp Cells. J Endod 2013; 39:1401-6. [DOI: 10.1016/j.joen.2013.06.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 05/13/2013] [Accepted: 06/29/2013] [Indexed: 01/09/2023]
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Yang TK, Lee YH, Paudel U, Bhattarai G, Yun BS, Hwang PH, Yi HK. Davallialactone from mushroom reduced premature senescence and inflammation on glucose oxidative stress in human diploid fibroblast cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:7089-7095. [PMID: 23802590 DOI: 10.1021/jf401691y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Mushrooms are both food and a source of natural compounds of biopharmaceutical interest. The purpose of this study was to clarify whether davallialactone from mushroom extract affected the pathogenesis of hyperglycemia oxidative stress and the aging process in human diploid fibroblast (HDF) cells. The high-glucose state with glucose oxidase resulted in glucose oxidative stress, induction of inflammatory molecules, dysfunction of antioxidant molecules, and activation of mitogen-activated protein kinase (MAPKs) and its downstream signaling in old HDF cells. The exposure of glucose oxidative stress in middle-stage cells led to stress-induced premature senescence (SIPS) via senescence-associated β-galactosidase (SA β-gal) activity and displayed replicative senescence phenomena. However, davallialactone reduces the pathogenesis of glucose oxidative stress and the aging process through down-regulation of SA β-gal activity. These results strongly suggest that natural compounds, especially mushroom extract davallialactone, improve the pathogenesis of glucose oxidative stress and the aging process. Hence, davallialactone has potential in the treatment of diabetes mellitus or age-related disease complications.
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Affiliation(s)
- Tae-Ki Yang
- Department of Pediatrics, School of Medicine, Chonbuk National University , Jeonju 561-712, Republic of Korea
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Kim DS, Kang SI, Lee SY, Noh KT, Kim EC. Involvement of SDF-1 and monocyte chemoattractant protein-1 in hydrogen peroxide-induced extracellular matrix degradation in human dental pulp cells. Int Endod J 2013; 47:298-308. [DOI: 10.1111/iej.12147] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 06/03/2013] [Indexed: 01/20/2023]
Affiliation(s)
- D.-S. Kim
- Department of Conservative Dentistry; School of Dentistry and Institute of Oral Biology; Kyung Hee University; Seoul Korea
| | - S. I. Kang
- Department of Maxillofacial Tissue Regeneration; School of Dentistry; Kyung Hee University; Seoul Korea
| | - S.-Y. Lee
- Department of Maxillofacial Tissue Regeneration; School of Dentistry; Kyung Hee University; Seoul Korea
| | - K.-T. Noh
- Department of Prosthodontics; School of Dentistry; Kyung Hee University; Seoul Korea
| | - E.-C. Kim
- Department of Maxillofacial Tissue Regeneration; School of Dentistry; Kyung Hee University; Seoul Korea
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Brietzke E, Mansur RB, Zugman A, Carvalho AF, Macêdo DS, Cha DS, Abílio VC, McIntyre RS. Is there a role for curcumin in the treatment of bipolar disorder? Med Hypotheses 2013; 80:606-12. [DOI: 10.1016/j.mehy.2013.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 01/24/2013] [Accepted: 02/01/2013] [Indexed: 11/28/2022]
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Noh JR, Kim YH, Hwang JH, Gang GT, Kim KS, Lee IK, Yun BS, Lee CH. Davallialactone protects against acetaminophen overdose-induced liver injuries in mice. Food Chem Toxicol 2013; 58:14-21. [PMID: 23583805 DOI: 10.1016/j.fct.2013.04.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 03/14/2013] [Accepted: 04/04/2013] [Indexed: 01/22/2023]
Abstract
Oxidative stress is closely associated with acetaminophen (APAP)-induced toxicity. Davallialactone (DAVA), a hispidin analog derived from the mushroom Inonotus xeranticus, has antioxidant properties. This study evaluated whether DAVA plays protective roles against APAP hepatotoxicity in mice. Pretreatments with DAVA (10 mg/kg) prior to exposures of mice to a hepatotoxic dose of 600 mg/kg APAP significantly increased survival rate compared to APAP alone. To verify this effect, mice were treated with 400 mg/kg APAP 30 min after DAVA administration and were then sacrificed after 0.5, 1, 3, and 6 h. APAP alone caused severe liver injuries as characterized by increased plasma GOT and GPT levels, ATP and GSH depletion, and peroxynitrite and 4-HNE formations. These liver damages induced by APAP were significantly attenuated by DAVA pretreatments. The GSH/GSSG ratio nearly recovered to the levels observed in non-APAP-treated mice at 6h after APAP treatment in DAVA-pretreated mice. Furthermore, while hepatic ROS levels were increased by APAP exposures, pretreatments with DAVA completely blocked ROS formation. In addition, APAP-induced sustained activations of JNK and ERK were remarkably reduced by DAVA pretreatment. In conclusion, these results suggest that DAVA plays protective roles against APAP-mediated hepatotoxicity through function as ROS scavenger.
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Affiliation(s)
- Jung-Ran Noh
- Laboratory Animal Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea
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Kim TG, Lee YH, Lee NH, Bhattarai G, Lee IK, Yun BS, Yi HK. The Antioxidant Property of Pachymic Acid Improves Bone Disturbance against AH Plus–induced Inflammation in MC-3T3 E1 Cells. J Endod 2013; 39:461-6. [DOI: 10.1016/j.joen.2012.11.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/30/2012] [Accepted: 11/06/2012] [Indexed: 11/27/2022]
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Aging of In Vitro Pulp Illustrates Change of Inflammation and Dentinogenesis. J Endod 2013; 39:340-5. [DOI: 10.1016/j.joen.2012.10.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 10/11/2012] [Accepted: 10/18/2012] [Indexed: 11/23/2022]
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Risal P, Hwang PH, Yun BS, Yi HK, Cho BH, Jang KY, Jeong YJ. Hispidin analogue davallialactone attenuates carbon tetrachloride-induced hepatotoxicity in mice. JOURNAL OF NATURAL PRODUCTS 2012; 75:1683-1689. [PMID: 23025331 DOI: 10.1021/np300099a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this study the protective effects of davallialactone (1), isolated from Inonotus xeranticus, have been examined against carbon tetrachloride (CCl₄-induced acute liver injury. Mice received subcutaneous injection of 1 (2.5, 5, and 10 mg/kg) for three days before CCl₄ injection (1 mg/kg). Protection from liver injury by 1 was confirmed by the observation of decreased serum transaminases and diminished necrosis of liver tissue. Reduced hepatic injury was very similar to that observed with silymarin, a known hepatoprotective drug used in this work for comparison. The groups treated with 1 had reduced reactive oxygen species (ROS), reduced serum malonyldialdehyde levels, and increased levels of liver Cu/Zn superoxide dismutase, as compared to the CCl₄ control group. The expression of heme oxygenase-1 in the liver tissue was increased and the activity of liver cytochrome P4502E1 was restored in the mice treated with 1. In addition, levels of serum tumor necrosis factor-alpha (TNF-α), inducible NO synthase (iNOS), and cyclooxygenase-2 (COX-2), numbers of macrophage, and cleaved caspase-3-positive hepatocytes were reduced in the groups treated with 1. These findings suggest that davallialactone has protective effects against CCl₄-induced acute liver injury, and this protection is likely due to the suppression of ROS-induced lipid peroxidation and inflammatory response.
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Affiliation(s)
- Prabodh Risal
- Laboratory of Liver Regeneration, Research Institute of Clinical Medicine of Chonbuk National University, Chonbuk National University Hospital, Jeonju 561-712, Korea
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Lee YH, Lee NH, Bhattarai G, Kim GE, Lee IK, Yun BS, Hwang PH, Yi HK. Anti-inflammatory effect of pachymic acid promotes odontoblastic differentiation via HO-1 in dental pulp cells. Oral Dis 2012; 19:193-9. [DOI: 10.1111/j.1601-0825.2012.01970.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 06/04/2012] [Accepted: 06/15/2012] [Indexed: 01/09/2023]
Affiliation(s)
- Y-H Lee
- Department of Oral Biochemistry; BK21 program; Jeonju Korea
| | - N-H Lee
- Department of Oral Biochemistry; BK21 program; Jeonju Korea
| | - G Bhattarai
- Department of Oral Biochemistry; BK21 program; Jeonju Korea
| | - G-E Kim
- Department of Oral Biochemistry; BK21 program; Jeonju Korea
| | - I-K Lee
- Division of Biotechnology; College of Environmental & Biosource Science; Jeonju Korea
| | - B-S Yun
- Division of Biotechnology; College of Environmental & Biosource Science; Jeonju Korea
| | - P-H Hwang
- Department of Pediatrics; School of Medicine; Chonbuk National University; Jeonju Korea
| | - H-K Yi
- Department of Oral Biochemistry; BK21 program; Jeonju Korea
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Regulation of vascular cell adhesion molecule-1 in dental pulp cells by interleukin-1β: the role of prostanoids. J Endod 2012; 38:774-9. [PMID: 22595111 DOI: 10.1016/j.joen.2012.02.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 02/20/2012] [Accepted: 02/22/2012] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Vascular cell adhesion molecule (VCAM-1) plays a critical role in the inflammatory processes by stimulating the recruitment, extravasation, and migration of leukocytes. Its expression and regulation in the dental pulp is not well elucidated. METHODS Primary dental pulp cells were exposed to prostaglandin E(2) (PGE(2)), prostaglandin F(2α) (PGF(2α)), or interleukin 1β (IL-1β) with/without aspirin. VCAM-1 messenger RNA expression was analyzed by reverse transcriptase-polymerase chain reaction. Soluble VCAM-1 (sVCAM-1) in the culture medium was determined by enzyme-linked immunosorbent assay, and the number of viable cells was estimated by (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. RESULTS IL-1β induced VCAM-1 gene expression of pulp cells. IL-1β also stimulated sVCAM-1 production. The IL-1β-induced sVCAM-1 production was not inhibited but rather enhanced by aspirin, a cyclooxygenase (COX) inhibitor. PGE(2) and PGF(2α) decreased the VCAM-1 expression and sVCAM-1 production of pulp cells. U0126 (1,4-diamino-2,3-dicyano-1,4-bis[2-aminophenylthio]butadiene), a mitogen-activated protein kinase kinase (MEK) inhibitor, attenuated IL-1β-induced sVCAM-1 production. However, no marked cytotoxicity was noted in these experimental conditions as analyzed by MTT assay. CONCLUSIONS IL-1β may be involved in the pulpal inflammatory processes via stimulation of VCAM-1 expression and sVCAM-1 production. This event is not mediated by COX activation and prostanoid production but is associated with MEK signaling. PGE(2) and PGF(2α) may potentially regulate inflammatory processes by the inhibition of VCAM-1.
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Chokechanachaisakul U, Kaneko T, Yamanaka Y, Kaneko R, Katsube KI, Kobayashi H, Nör JE, Okiji T, Suda H. Gene Expression Analysis of Resident Macrophages in Lipopolysaccharide-stimulated Rat Molar Pulps. J Endod 2011; 37:1258-63. [DOI: 10.1016/j.joen.2011.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 06/03/2011] [Accepted: 06/03/2011] [Indexed: 12/24/2022]
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