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Hoseinifar R, Eskandarizadeh A, Lashkarizadeh L, Derakhshani A, Arjmand F. Cytotoxicity effects of nanohybrid, bulk-fill, and ormocer composites on dental pulp stem cells and human gingival fibroblast cells. Dent Res J (Isfahan) 2022; 19:101. [PMID: 36605150 PMCID: PMC9808008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/12/2022] [Accepted: 07/16/2022] [Indexed: 01/07/2023] Open
Abstract
Background Despite significant improvements in the physical and esthetic properties of modern composite resins, there are still concerns about their biocompatibility. The aim of the current study was to evaluate the toxicity of X-tra fil, Grandio, and Admira Fusion composites on dental pulp stem cells (DPSCs) and human gingival fibroblast (HGF) cells. Materials and Methods In this in vitro experimental study, 48 composite disks were made using Grandio, Admira Fusion (2 mm high and 4 mm in diameter), and X-tra fil (4 mm high and 4 mm in diameter) composites and cured for 40 s. The composite blocks were then crushed with a sterile mortar and dissolved in phosphate saline buffer solution. Tetrazolium salt (3-(4,5-dimethyl thiazol-2-yl)-2,5 diphenyltetrazolium bromide (MTT_, neutral red (NR) assay, flow cytometry, and quantitative real-time polymerase chain reaction (RT-PCR) tests (n = 5) were used to evaluate the toxicity of the composites on two cell types (HGF, DPSCs). Data were analyzed using one-way ANOVA test followed by Newman-Keuls test. Level of significance was set at P < 0.05. Results According to the results of MTT test, only Grandio showed a significant cytotoxicity in DPSCs, but in HGF cells, Grandio and X-tra fil both showed a significant cytotoxicity. In NR test, Grandio and X-tra fil composites showed a significant cytotoxicity on both HGF and DPSC cells. RT-PCR test results on both DPSC and HGF cells indicated that bax gene expression in the Grandio composite was significant. In this test, the nonexpression of the bcl2 gene in DPSCs was significant in Grandio (100 and 200 μg/ml) and in X-tra fil (200 μg/ml). All of the tests performed in this study showed no significant toxicity of Admira fusion. Conclusion Admira Fusion is suitable for oral cells in terms of biocompatibility and can be used as a suitable restorative material for deep restorations near the pulp or adjacent to the gums.
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Affiliation(s)
- Razieh Hoseinifar
- Department of Operative Dentistry, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
| | - Ali Eskandarizadeh
- Department of Operative Dentistry, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
| | - Lida Lashkarizadeh
- Department of Operative Dentistry, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran,Address for correspondence: Dr. Lida Lashkarizadeh, Department of Operative Dentistry, School of Dentistry, Kerman, Iran. E-mail:
| | - Ali Derakhshani
- Research Center for Hydatid Disease in Iran, Kerman University of Medical Science, Kerman, Iran
| | - Fatemeh Arjmand
- Department of Operative Dentistry, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
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Álvarez-Vásquez JL, Castañeda-Alvarado CP. Dental pulp fibroblast: A star Cell. J Endod 2022; 48:1005-1019. [DOI: 10.1016/j.joen.2022.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 12/16/2022]
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Sufian N, Behfar M, Tehrani AA, Malekinejad H. Improved Healing of Colonic Anastomosis with Allotransplantation of Axillary Skin Fibroblasts in Rats. CELL JOURNAL 2022; 24:188-195. [PMID: 35674021 PMCID: PMC9124447 DOI: 10.22074/cellj.2022.7861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 04/13/2021] [Indexed: 11/21/2022]
Abstract
Objective Colonic anastomosis is associated with serious complications leading to significant morbidity and mortality. Fibroblasts have recently been introduced as a practical alternative to stem cells because of their differentiation capacity, anti-inflammatory, and regenerative properties. The aim of this study was to evaluate the effects of intramural injection of fibroblasts on the healing of colonic anastomosis in rats. Materials and Methods Inbred mature male Wistar rats were used in this experimental study (n=36). Fibroblasts were isolated from the axillary skin of a donor rat. In the sham group, manipulation on descending colon was done during laparotomy. A 5 mm segment of the colon was resected, and end-to-end anastomosis was performed. In the control group, 0.5 ml of phosphate buffer saline (PBS) was injected into the colonic wall and in the treatment group, 1×106 fibroblasts were transplanted. Following euthanasia on day 7, intra-abdominal adhesion, leakage and peritonitis were evaluated by necropsy. Mechanical properties were assessed using bursting pressure and tensile tests. Inflammation, angiogenesis, and collagen deposition were examined histopathologically. Results The mean scores for adhesion and leakage were decreased in the treatment group versus control samples. Lower infiltration of inflammatory cells was observed in the treatment group (P=0.03). Angiogenesis and collagen deposition scores were significantly increased in the fibroblast transplanted group (P=0.03). Tensile mechanical properties of the colon were significantly increased in the treatment group compared to the control sample (P=0.01). There was no significant difference between the control and treatment groups in terms of bursting pressure (P=0.10). Positive weight changes were found in sham and treatment groups, but the control rats lost weight after 7 days. Conclusion The results suggested that allotransplantation of dermal fibroblasts could improve the necroscopic, histopathological, and biomechanical indices of colonic anastomosis repair in rats.
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Affiliation(s)
- Narges Sufian
- Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Mehdi Behfar
- Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
| | - Ali-Asghar Tehrani
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Hassan Malekinejad
- Department of Pharmacology and Toxicology, School of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
- Experimental and Applied Pharmaceutical Sciences Research Center, Urmia University of Medical Sciences, Urmia, Iran
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Zha K, Tian G, Yang Z, Sun Z, Liu S, Guo Q. [The role of CD146 in mesenchymal stem cells]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2021; 35:227-233. [PMID: 33624479 DOI: 10.7507/1002-1892.202005110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To summarize the expression and role of CD146 in mesenchymal stem cells (MSCs). Methods The literature related to CD146 at home and abroad were extensively consulted, and the CD146 expression in MSCs and its function were summarized and analyzed. Results CD146 is a transmembrane protein that mediates the adhesion of cells to cells and extracellular matrix, and is expressed on the surface of various MSCs. More and more studies have shown that CD146 + MSCs have superior cell properties such as greater proliferation, differentiation, migration, and immune regulation abilities than CD146 - or unsorted MSCs, and the application of CD146 + MSCs in the treatment of specific diseases has also achieved better results. CD146 is also involved in mediating a variety of cellular signaling pathways, but whether it plays the same role in MSCs remains to be demonstrated by further experiments. Conclusion The utilization of CD146 + MSCs for tissue regeneration will be conducive to improving the therapeutic effect of MSCs.
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Affiliation(s)
- Kangkang Zha
- Medical School of Chinese PLA, Beijing, 100853, P.R.China;Institute of Orthopaedics, the First Medical Centre, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopaedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, Beijing, 100853, P.R.China;School of Medicine, Nankai University, Tianjin, 300071, P.R.China
| | - Guangzhao Tian
- Medical School of Chinese PLA, Beijing, 100853, P.R.China;Institute of Orthopaedics, the First Medical Centre, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopaedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, Beijing, 100853, P.R.China;School of Medicine, Nankai University, Tianjin, 300071, P.R.China
| | - Zhen Yang
- Medical School of Chinese PLA, Beijing, 100853, P.R.China;Institute of Orthopaedics, the First Medical Centre, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopaedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, Beijing, 100853, P.R.China;School of Medicine, Nankai University, Tianjin, 300071, P.R.China
| | - Zhiqiang Sun
- Medical School of Chinese PLA, Beijing, 100853, P.R.China;Institute of Orthopaedics, the First Medical Centre, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopaedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, Beijing, 100853, P.R.China;School of Medicine, Nankai University, Tianjin, 300071, P.R.China
| | - Shuyun Liu
- Institute of Orthopaedics, the First Medical Centre, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopaedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, Beijing, 100853, P.R.China
| | - Quanyi Guo
- Institute of Orthopaedics, the First Medical Centre, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopaedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, Beijing, 100853, P.R.China
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Bangera M, Madhyastha P, Bhat K, Padma D, Naik D, Srikant N, Kotian R. Cytotoxicity of Silorane and Methacrylate based Dental Composites on Human Pulp Cells. JOURNAL OF OROFACIAL SCIENCES 2021. [DOI: 10.4103/jofs.jofs_312_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Tavangar MS, Attar A, Razmkhah M, Hosseini SM, Hosseini A, Monabati A, Shafiei F. Differential expression of drug resistance genes in CD146 positive dental pulp derived stem cells and CD146 negative fibroblasts. Clin Exp Dent Res 2020; 6:448-456. [PMID: 32378809 PMCID: PMC7453779 DOI: 10.1002/cre2.297] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/06/2020] [Accepted: 04/08/2020] [Indexed: 12/15/2022] Open
Abstract
Introduction The stem cell portion of the dental pulp derived cultures (DPSCs) showed a higher resistance to cytotoxic effect of restorative dental materials compared to pulpal fibroblasts (DPFs). Here, we aimed to compare the expression of some drug resistant genes between these cells. Methods and materials To separate DPSCs from DPFs, we used magnetic cell sorting technique based on CD146 expression. To assess the stem cell properties, the positive and negative portions underwent colony forming assays and were induced to be differentiated into the adipocytes, osteoblasts, hepatocytes, and neural cells. Cell surface antigen panels were checked using immune fluorescence and flow‐cytometry techniques. The mRNA expression of 14 ABC transporters including ABCA2, ABCB1, ABCB11, ABCC1, ABCC2, ABCC3, ABCC4, ABCC5‐2, ABCC5‐4,ABCC5‐13, ABCC6, ABCC10, ABCC11, and ABCG2 genes was assessed, using quantitative RT‐PCR technique. Results Only the CD146 positive portion could be differentiated into the desired fates, and they formed higher colonies (16.7 ± 3.32 vs. 1.7 ± 1.67, p < .001). The cell surface antigen panels were the same, except for CD146 and STRO‐1 markers which were expressed only in the positive portion. Among the ABC transporter genes studied, the positive portion showed a higher expression (approximately two‐fold) of ABCA2, ABCC5‐13, and ABCC5‐2 genes. Conclusion Dental pulp stem cells which can be separated from dental pulp fibroblasts based on CD146 expression, express higher levels of some drug resistance genes which probably accounts for their features of more resistance to cytotoxic effects of some dental materials. This needs to be more validated in future.
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Affiliation(s)
- Maryam S Tavangar
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz Universityof Medical Sciences, Shiraz, Iran
| | - Armin Attar
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz Universityof Medical Sciences, Shiraz, Iran
| | - Mahboobeh Razmkhah
- Department of Cardiovascular Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed-Mojtaba Hosseini
- Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Hosseini
- Department of Cardiovascular Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Monabati
- Cell and Molecular Medicine Research group, Shiraz University of Medical Sciences, Shiraz, Iran.,Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fereshteh Shafiei
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz Universityof Medical Sciences, Shiraz, Iran
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Khorraminejad-Shirazi M, Sani M, Talaei-Khozani T, Dorvash M, Mirzaei M, Faghihi MA, Monabati A, Attar A. AICAR and nicotinamide treatment synergistically augment the proliferation and attenuate senescence-associated changes in mesenchymal stromal cells. Stem Cell Res Ther 2020; 11:45. [PMID: 32014016 PMCID: PMC6998366 DOI: 10.1186/s13287-020-1565-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/05/2020] [Accepted: 01/19/2020] [Indexed: 12/11/2022] Open
Abstract
Background Mesenchymal stromal cell (MSC) stemness capacity diminishes over prolonged in vitro culture, which negatively affects their application in regenerative medicine. To slow down the senescence of MSCs, here, we have evaluated the in vitro effects of 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR), an AMPK activator, and nicotinamide (NAM), an activator of sirtuin1 (SIRT1). Methods Human adipose-derived MSCs were cultured to passage (P) 5. Subsequently, the cells were grown in either normal medium alone (control group), the medium supplemented with AICAR (1 mM) and NAM (5 mM), or in the presence of both for 5 weeks to P10. Cell proliferation, differentiation capacity, level of apoptosis and autophagy, morphological changes, total cellular reactive oxygen species (ROS), and activity of mTORC1 and AMPK were compared among different treatment groups. Results MSCs treated with AICAR, NAM, or both displayed an increase in proliferation and osteogenic differentiation, which was augmented in the group receiving both. Treatment with AICAR or NAM led to decreased expression of β-galactosidase, reduced accumulation of dysfunctional lysosomes, and characteristic morphologic features of young MSCs. Furthermore, while NAM administration could significantly reduce the total cellular ROS in aged MSCs, AICAR treatment did not. Moreover, AICAR-treated cells possess a high proliferation capacity; however, they also show the highest level of cellular apoptosis. The observed effects of AICAR and NAM were in light of the attenuated mTORC1 activity and increased AMPK activity and autophagy. Conclusions Selective inhibition of mTORC1 by AICAR and NAM boosts autophagy, retains MSCs’ self-renewal and multi-lineage differentiation capacity, and postpones senescence-associated changes after prolonged in vitro culture. Additionally, co-administration of AICAR and NAM shows an additive or probably a synergistic effect on cellular senescence.
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Affiliation(s)
- Mohammadhossein Khorraminejad-Shirazi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran.,Cell and Molecular Medicine Student Research Group, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahsa Sani
- Tissue Engineering Department, School of Advanced Medical Science and Technology, Shiraz University of Medical Science, Shiraz, Iran.,Tissue Engineering Lab, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Tahereh Talaei-Khozani
- Tissue Engineering Lab, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Dorvash
- Cell and Molecular Medicine Student Research Group, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Malihe Mirzaei
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Ali Faghihi
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Center for Therapeutic Innovation, Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ahmad Monabati
- Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Armin Attar
- Department of Cardiovascular Medicine, Shiraz University of Medical Sciences, PO Box 71344-1864, Shiraz, Iran.
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Hadaegh Y, Niknam M, Attar A, Maharlooei MK, Tavangar MS, Aarabi AM, Monabati A. Characterization of stem cells from the pulp of unerupted third molar tooth. Indian J Dent Res 2016; 25:14-21. [PMID: 24748292 DOI: 10.4103/0970-9290.131048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
CONTEXT Dental pulp stem cells (DPSCs) are the most diagnosed type of stem cells isolated from dental tissues. Previous studies demonstrate that tissues in earlier stages of development could be better stem cell resources for tissue engineering. AIMS In this study, aiming at finding younger stem cell resources, we chose the pulp of human unerupted third molar teeth when the crown was completely formed and the roots had not begun their development, Nolla's 6 th developmental stage (N6 th ). MATERIALS AND METHODS Surgical removal of the third molar was performed by aseptic technique with minimal trauma. The tissues were digested enzymatically and the resulted single cells were cultured. Immunophenotypic characterization of the cells was done via immunocytochemistry, immunofluorescence, and flow cytometry assays. Adipogenic and osteogenic differentiation potential of these cells was examined and confirmed by histochemical staining and reverse transcription-polymerase chain reaction analysis. STATISTICAL ANALYSIS USED This study is descriptive. RESULTS N6 th -unerupted dental pulp cultured cells expressed DPSC markers: Vimentin, CD73, CD90, CD105, CD166, CD44, CD146, and STRO-1, but did not express hematopoietic cell markers: CD14, CD34, CD45, HLA-DR and were also negative for dentin sialoprotein negative showing an undifferentiated preodontogenic state. Adipocytes differentiated from N6 th -DPSCs were positively stained with Oil-Red-O and expressed both early and late adipocyte specific genes. Formation of Alizarin-red positive condensed calcium-phosphate nodules accompanied by strong expression of two osteogenic mRNAs, exhibited osteogenic differentiation. CONCLUSION Based on the results of this study, we suggest that N6 th -DMSCs are a viable choice for cryo-banking and future usage in regenerative therapies; however, more investigations are necessary before clinical application can commence.
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Affiliation(s)
| | | | | | | | | | | | - Ahmad Monabati
- Department of Pathology, Hematology Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Şişman R, Aksoy A, Yalçın M, Karaöz E. Cytotoxic effects of bulk fill composite resins on human dental pulp stem cells. J Oral Sci 2016; 58:299-305. [DOI: 10.2334/josnusd.15-0603] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Reyhan Şişman
- Department of Restorative Dentistry, Faculty of Dentistry, University of Inonu
| | - Ayça Aksoy
- Faculty of Bioengineering, Institute of Science, Yildiz Technical University
| | - Muhammet Yalçın
- Department of Restorative Dentistry, Faculty of Dentistry, University of Inonu
| | - Erdal Karaöz
- Liv Hospital, Center for Regenerative Medicine and Stem Cell Research and Manufacturing
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10
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Schulz SD, Rüppell C, Tomakidi P, Steinberg T, Reichl FX, Hellwig E, Polydorou O. Gene expression analysis of conventional and interactive human gingival cell systems exposed to dental composites. Dent Mater 2015; 31:1321-34. [PMID: 26345997 DOI: 10.1016/j.dental.2015.08.157] [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: 05/18/2015] [Revised: 07/31/2015] [Accepted: 08/17/2015] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The aim of this study was the detection of putative gene expression-related effects of dental composites in conventional and interactive gingival cell systems. METHODS Conventional monoculture (MC) and interactive cell systems (ICS) comprising human gingival fibroblast (HGF) and immortalized human gingival keratinocytes (IHGK) were exposed for 24h and 7 days according to ISO10993-12:2012 manufactured eluates of different composites (Ceram X(®), Filtek™ Supreme XT, Filtek™ Silorane, Fusio™ Liquid Dentin, and Vertise™ Flow). qRT-PCR-based mRNA analysis for biomarkers indicating cell proliferation, differentiation, apoptosis, inflammation, and adhesion was performed. Apoptotic cells were quantified by annexin-V labeling. RESULTS Due to low RNA amounts, qPCR could not be performed for Vertise™ Flow and Fusio™ Liquid Dentin at day 7. At 24h, flowables yielded increased transcription for biomarkers of inflammation and apoptosis in IHGK, irrespective of the cell system. HGF cultures displayed lower transcription for cell adhesion markers in both cell systems. Filtek™ Supreme XT showed increased differentiation by elevated filaggrin gene expression in both cell systems for IHGK at day 7, while Filtek™ Silorane and Ceram X(®) yielded elevation of inflammation biomarkers in both cell types. Annexin-V labeling revealed high apoptosis rates for both flowables and Filtek™ Supreme XT for IHGK, while low rates were detected for Filtek™ Silorane and Ceram X(®). SIGNIFICANCE Among the composites evaluated, exposition of IHGK and HGF in conventional and interactive cell systems demonstrated most pronounced gene expression alterations in response to flowables, coinciding with elevated levels of apoptosis.
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Affiliation(s)
- Simon Daniel Schulz
- Department of Oral Biotechnology, University Medical Center Freiburg, Center of Dental Medicine, Freiburg, Germany
| | - Christopher Rüppell
- Department of Operative Dentistry and Periodontology, University Medical Center Freiburg, Center of Dental Medicine, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Pascal Tomakidi
- Department of Oral Biotechnology, University Medical Center Freiburg, Center of Dental Medicine, Freiburg, Germany
| | - Thorsten Steinberg
- Department of Oral Biotechnology, University Medical Center Freiburg, Center of Dental Medicine, Freiburg, Germany
| | - Franz-Xaver Reichl
- Department of Operative/Restorative Dentistry, Periodontology and Pedodontics, Ludwig-Maximilians-University of Munich, Munich, Germany; Walther-Straub-Institute of Pharmacology and Toxicology, Munich, Germany
| | - Elmar Hellwig
- Department of Operative Dentistry and Periodontology, University Medical Center Freiburg, Center of Dental Medicine, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Olga Polydorou
- Department of Operative Dentistry and Periodontology, University Medical Center Freiburg, Center of Dental Medicine, Hugstetter Straße 55, 79106 Freiburg, Germany.
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Dehghani Nazhvani A, Hosseini SM, Tahoori B, Tavangar MS, Attar A. Identification of Mesenchymal Stem Cell Marker STRO-1 in Oral Reactive Lesions by Immunofluorescence Method. JOURNAL OF DENTISTRY (SHIRAZ, IRAN) 2015; 16:246-50. [PMID: 26535404 PMCID: PMC4623832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
STATEMENT OF THE PROBLEM Stem cells are considered as new implement for tissue regeneration. Several niches in adult human body are colonized by multipotent stem cells but access to these potential reservoirs is often limited. Although human dental pulp stem cells isolated from healthy teeth have been extensively characterized, it is still unknown whether stem cells also exist in reactive lesions of oral cavity such as pyogenic granuloma and peripheral ossifying fibroma which are deliberated as inflammatory proliferation of different cell families. PURPOSE The aim of this study was to explore for clues to see whether pyogenic granuloma or peripheral ossifying fibroma contain dental mesenchymal stem cell (DMSC). MATERIALS AND METHOD Four pyogenic granuloma and four peripheral ossifying fibroma specimens were collected by excisional biopsy and preserved in PBS-EDTA at -86 °C. Then we cut them in 5µm diameter using Cryostat. Having been rinsed with PBS, the samples were stained with a primary mouse anti-human STRO-1 monoclonal IgM antibody. Afterward, a secondary goat anti-mouse IgM-FITC antibody was applied to detect STRO-1+ cells as probable stem cells by immunofluorescence technique. RESULTS Immunofluorescence microscopy revealed presence of STRO-1+ cells in these lesions, particularly localized on perivascular zone. The negative control group was not glowing. CONCLUSION Based on these results, it was found that reactive lesions of pyogenic granuloma and peripheral ossifying fibroma have STRO-1 positive cells, which raises the possibility that these cells may be DMSCs.
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Affiliation(s)
- Ali Dehghani Nazhvani
- Biomaterial Research Center, Dept. of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
| | | | - Bita Tahoori
- Students' Research Committee, School of Dentistry, International Branch, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Maryam-Sadat Tavangar
- Biomaterial Research Center, Dept. of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Armin Attar
- Cell and Molecular Research Club, Shiraz University of Medical Sciences, Shiraz, Iran.
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