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Patntirapong S, Khankhow J, Julamorn S. Long-term passage impacts human dental pulp stem cell activities and cell response to drug addition in vitro. PeerJ 2024; 12:e17913. [PMID: 39193517 PMCID: PMC11348901 DOI: 10.7717/peerj.17913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Accepted: 07/23/2024] [Indexed: 08/29/2024] Open
Abstract
Background Dental pulp stem cells (DPSCs) possess mesenchymal stem cell characteristics and have potential for cell-based therapy. Cell expansion is essential to achieve sufficient cell numbers. However, continuous cell replication causes cell aging in vitro, which usually accompanies and potentially affect DPSC characteristics and activities. Continuous passaging could alter susceptibility to external factors such as drug treatment. Therefore, this study sought to investigate potential outcome of in vitro passaging on DPSC morphology and activities in the absence or presence of external factor. Methods Human DPSCs were subcultured until reaching early passages (P5), extended passages (P10), and late passages (P15). Cells were evaluated and compared for cell and nuclear morphologies, cell adhesion, proliferative capacity, alkaline phosphatase (ALP) activity, and gene expressions in the absence or presence of external factor. Alendronate (ALN) drug treatment was used as an external factor. Results Continuous passaging of DPSCs gradually lost their normal spindle shape and increased in cell and nuclear sizes. DPSCs were vulnerable to ALN. The size and shape were altered, leading to morphological abnormality and inhomogeneity. Long-term culture and ALN interfered with cell adhesion. DPSCs were able to proliferate irrespective of cell passages but the rate of cell proliferation in late passages was slower. ALN at moderate dose inhibited cell growth. ALN caused reduction of ALP activity in early passage. In contrast, extended passage responded differently to ALN by increasing ALP activity. Late passage showed higher collagen but lower osteocalcin gene expressions compared with early passage in the presence of ALN. Conclusion An increase in passage number played critical role in cell morphology and activities as well as responses to the addition of an external factor. The effects of cell passage should be considered when used in basic science research and clinical applications.
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Affiliation(s)
- Somying Patntirapong
- Thammasat University Research Unit in Dental and Bone Substitute Biomaterials, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
| | | | - Sikarin Julamorn
- Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
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Patntirapong S, Champakerdsap C, Mathaveechotikul P, Vatanasilp A. Improvement of osteoblast adhesion, viability, and mineralization by restoring the cell cytoskeleton after bisphosphonate discontinuation in vitro. J Appl Oral Sci 2024; 32:e20240034. [PMID: 39140581 PMCID: PMC11321799 DOI: 10.1590/1678-7757-2024-0034] [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: 02/05/2024] [Revised: 05/22/2024] [Accepted: 06/21/2024] [Indexed: 08/15/2024] Open
Abstract
OBJECTIVE Bisphosphonates are prescribed to treat excessive bone resorption in patients with osteoporosis. However, its use is associated with potential adverse effects such as medication-related osteonecrosis of the jaw, prompting the introduction of the drug holiday concept in patients prior to dentoalveolar surgery. Furthermore, bisphosphonate discontinuation has been studied in vivo, in humans, and in animal models. However, it is not known whether this approach could affect bone cells in vitro. Therefore, the objective of this study was to investigate the potential effects of bisphosphonate discontinuation on pre-osteoblast and osteoblast activities in vitro. METHODOLOGY Pre-osteoblasts (MC3T3) and osteoblasts were treated with bisphosphonate (alendronate) at concentrations of 1, 5, and 10 µM. Alendronate was then withdrawn at different time points. The negative control consisted of untreated cells (0 µM), while the positive control consisted of cells incubated with alendronate throughout the experiment. Cell viability, cell adhesion, cell cytoskeleton, mineralization, and gene expressions were investigated. RESULTS Pre-osteoblasts and osteoblasts showed a decrease in cell viability after treatment with 5-10 μM alendronate for 4 days or longer. Two days of alendronate discontinuation significantly increased cell viability compared with the positive control. However, these levels did not reach those of the negative control. Bone nodule formation was reduced by alendronate. Discontinuation of alendronate regained bone nodule formation. Longer periods of discontinuation were more effective in restoring nodule formation than shorter periods. Addition of alendronate resulted in an increase in the percentage of dead cells, which, in turn, decreased when alendronate was discontinued. Alendronate affected the cell cytoskeleton by disassembling actin stress fibers. Cell adhesion and cell morphological parameters were also affected by alendronate. Discontinuation of alendronate restored cell adhesion and these parameters. Overall, the highest improvement after alendronate discontinuation was seen at 10 µM. However, alendronate treatment and discontinuation did not affect osteoblast gene expression. CONCLUSION Discontinuation of alendronate helps to reverse the negative effects of the drug on cell viability, cell adhesion, and mineralization by restoring the cell cytoskeleton. Our data suggest the benefits of drug holiday and/or intermittent strategies for alendronate administration at the cellular level.
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Affiliation(s)
- Somying Patntirapong
- Thammasat University Research Unit in Dental and Bone Substitute Biomaterials, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
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Shi W, Gao Y, Wu Y, Sun J, Xu B, Lu X, Wang Q. A multifunctional polydopamine/genipin/alendronate nanoparticle licences fibrin hydrogels osteoinductive and immunomodulatory potencies for repairing bone defects. Int J Biol Macromol 2023; 249:126072. [PMID: 37524274 DOI: 10.1016/j.ijbiomac.2023.126072] [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: 02/22/2023] [Revised: 02/27/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
Here, we fabricated a hybrid nanoparticle composed of polydopamine nanoparticles (pNPs), alendronate (Al) and genipin (GP) for cranial bone defect repair. Al was crosslinked into pNPs via GP (Al@pNPs), after which hybrid nanoparticles were obtained. By embedding these Al@pNPs into the fibrin hydrogels, a multifunctional bone repair scaffold was fabricated (Al@pNPs/Fg). The Al@pNPs/Fg exhibited three synergistic effects on the bone microenvironment: i) enhanced ectomesenchymal stem cell (EMSC) osteogenic differentiation by activating the piezo 1 channel; ii) inhibited the formation and function of osteoclasts related to the NF-κB signaling pathways; and iii) promoted M2 polarization and anti-inflammatory factor expression under normal and simulated inflammatory conditions. Al@pNPs/Fg ultimately promoted cranial bone defect regeneration in an SD rat model. This simple and low-cost technology provides a new approach to constructing an efficient delivery system and has desirable biological properties, providing a tissue-committed niche for the repair of bone defects.
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Affiliation(s)
- Wentao Shi
- Department of Neurosurgery, Jiangnan University Medical Center, Wuxi, Jiangsu Province 214122, PR China; Wuxi neurosurgical Institute, Wuxi, Jiangsu Province 214122, PR China.
| | - Yan Gao
- Department of Neurosurgery, Jiangnan University Medical Center, Wuxi, Jiangsu Province 214122, PR China
| | - Yiqing Wu
- Department of Neurosurgery, Jiangnan University Medical Center, Wuxi, Jiangsu Province 214122, PR China
| | - Jiaqi Sun
- Department of Neurosurgery, Jiangnan University Medical Center, Wuxi, Jiangsu Province 214122, PR China
| | - Bai Xu
- Department of Neurosurgery, Jiangnan University Medical Center, Wuxi, Jiangsu Province 214122, PR China
| | - Xiaojie Lu
- Department of Neurosurgery, Jiangnan University Medical Center, Wuxi, Jiangsu Province 214122, PR China; Neuroscience Center, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu Province 214122, PR China.
| | - Qing Wang
- Department of Neurosurgery, Jiangnan University Medical Center, Wuxi, Jiangsu Province 214122, PR China; Neuroscience Center, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu Province 214122, PR China.
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Patntirapong S. Duration and timing of bisphosphonate treatment as factors determining osteoblast mineralization. J Oral Biol Craniofac Res 2022; 12:575-579. [DOI: 10.1016/j.jobcr.2022.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 10/16/2022] Open
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Lilakhunakon C, Suwanpateeb J, Patntirapong S. Inhibitory Effects of Alendronate on Adhesion and Viability of Preosteoblast Cells on Titanium Discs. Eur J Dent 2021; 15:502-508. [PMID: 34100275 PMCID: PMC8382445 DOI: 10.1055/s-0041-1726170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Objective
This study aimed to investigate the effects of alendronate (ALN; a bisphosphonate) on adhesion and viability of preosteoblasts using different cell passages on sandblasted and acid-etched (SLA) Ti surfaces.
Materials and Methods
Preosteoblast, MC3T3, cells (passage 42; P42 and passage 62; P62) were cultured with ALN (1 and 5 µM) on cell culture plate for 7 days. Cells were lifted, counted, and seeded on SLA Ti surfaces. Cells were incubated on the discs for 6 hours to examine cell adhesion by using confocal microscopy and for 24 hours to determine cell viability by using MTT assay.
Results
ALN interfered with cell adhesion on Ti surfaces by reducing the cell number in both cell passages. Nuclei of untreated cells showed oval shape, whereas some nuclei of ALN-treated cells demonstrated crescent and condensed appearance. ALN at 1 and 5 µM significantly decreased nuclear area and perimeter in P42, while ALN at 5 µM reduced nuclear area and perimeter in P62. After 24 hours, cells (P42) grown on Ti surfaces showed decreased cell viability when culturing with 5 µM ALN.
Conclusion
ALN reduced cell adhesion and viability of preosteoblasts on Ti surfaces. ALN treatment seemed to exert higher inhibitory effects on nuclear shape and size as well as cell viability in lower cell passage. This led to the reduction in cell to implant surface interaction after encountering bisphosphonate treatment.
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Affiliation(s)
- Charukrit Lilakhunakon
- Department of Implantology, Faculty of Dentistry, Thammasat University, Pathum Thani, Thailand
| | - Jintamai Suwanpateeb
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Somying Patntirapong
- Thammasat University Research Unit in Dental and Bone Substitute Biomaterials, Faculty of Dentistry, Thammasat University, Pathum Thani, Thailand
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Timing of geranylgeraniol addition increases osteoblast activities under alendronate condition. J Oral Biol Craniofac Res 2021; 11:396-401. [PMID: 34026481 DOI: 10.1016/j.jobcr.2021.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/26/2021] [Accepted: 04/22/2021] [Indexed: 11/20/2022] Open
Abstract
Background Alendronate (ALN), a nitrogen-containing bisphosphonate, is prescribed to treat bone diseases. ALN acts as an inhibitor of enzymes in the mevalonate pathway, which results in reducing osteoblast viability and mineralization. Geranylgeraniol (GGOH) is a substrate in mevalonate pathway and mediates protein prenylation in the cells. Objective To investigate the effects of GGOH on ALN-treated osteoblast activities in order to improve the application of GGOH. Methods MC3T3 cells were treated with ALN. GGOH were added at different time points. Cell activities were examined using alizarin red S, MTT assay, alkaline phosphatase (ALP) activity, and quantitative polymerase chain reaction. Results ALN decreased mineralization. In the presence of ALN, GGOH addition at the first week of culture increased mineralization compared with the addition at other time points. ALN treatment for 7 days caused a reduction in osteoblast and pre-osteoblast viability compared with untreated cells. GGOH supplement partially rescued cell viability and increased total protein in cells treated with ALN. Furthermore, GGOH significantly upregulated gene expressions of Col I, OPN, VEGF, and VEGFR2. Conclusion GGOH could be best applied at the early stage of osteogenesis since GGOH helped increasing cell viability and differentiation at the first 7 day of treatment.
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Patntirapong S, Korjai N, Matchimapiro M, Sungkaruk P, Suthamporn Y. Geranylgeraniol reverses alendronate-induced MC3T3 cell cytotoxicity and alteration of osteoblast function via cell cytoskeletal maintenance. J Oral Pathol Med 2021; 50:191-199. [PMID: 33164239 DOI: 10.1111/jop.13120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/06/2020] [Accepted: 09/23/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Alendronate (ALN) is a bisphosphonate, which is prescribed as an anti-osteoporotic drug. ALN has been shown to increase osteoblast cell death and decrease bone mineralization. ALN inhibits a key regulatory enzyme in the mevalonate pathway, consequently reducing geranylgeranyl pyrophosphate (GGPP). Geranylgeraniol (GGOH) can be converted to GGPP. The aim of this study was to investigate the effects of exogenous GGOH on MC3T3 cell viability, cell cycle, osteoblast function, and cell cytoskeleton under ALN treatment. METHODS MC3T3 cells and osteoblast precursors, were incubated with ALN (0-50 µmol/L) and GGOH (0-50 µmol/L). After treatment, cells were evaluated for cell viability, cell cycle, osteoblast function, and cell cytoskeleton by MTT, flow cytometry, alizarin red S assay, and fluorescent microscopy, respectively. RESULTS ALN reduced cell viability and bone nodule formation in a dose-dependent manner. GGOH partially inhibited the negative effects of ALN on cell viability and function. ALN increased the percentages of cell apoptosis and necrosis and arrested cells in G2M phase. Co-incubation with GGOH partially reduced late cell apoptosis and rescued cell cycle arrest. Furthermore, ALN altered MC3T3 morphology and decreased cell area, actin stress fiber density as well as nuclear area. GGOH abolished the effect of ALN on cell area, actin stress fiber density, and nuclear area. CONCLUSIONS GGOH partially inhibited negative effects of ALN on cell viability, cell cycle, function, and cell cytoskeleton. It might be an additional option for increasing osteoblast function and reducing apoptosis of osteoblasts in the condition treated with low bisphosphonate concentration.
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Affiliation(s)
| | - Nareerat Korjai
- Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
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Patntirapong S, Chanruangvanit C, Lavanrattanakul K, Satravaha Y. Assessment of bisphosphonate treated-osteoblast behaviors by conventional assays and a simple digital image analysis. Acta Histochem 2021; 123:151659. [PMID: 33285364 DOI: 10.1016/j.acthis.2020.151659] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 11/08/2020] [Accepted: 11/17/2020] [Indexed: 11/19/2022]
Abstract
The main objective of this study was to analyze the changes in osteoblast behaviors by two different methods, a simple digital image analysis method and conventional assays. Osteoblast progenitor cells and osteoblasts were treated with alendronate (ALN; a nitrogen-containing bisphosphonate). Osteoblast behaviors such as the uptake of ALN, cell proliferation, cell differentiation, and mineralized nodule formation were examined. Quantitative assessments were conducted using a publically available ImageJ software along with conventional methods. Furthermore, ImageJ method and conventional assay for mineralized nodule formation were performed simultaneously and were compared in order to demonstrate the reliability of ImageJ analysis. Osteoblast precursors and osteoblasts responded to ALN treatments. The software could identify various colors and allowed for the quantification of staining intensity and area coverage. Both image analysis and conventional assays detected the changes in cell behaviors between treated and untreated samples. For alizarin red S assay, the staining intensity calculated by ImageJ analysis was comparable to the absorbance measured by conventional assay. These findings showed that digital image analysis along with conventional assays could be used for quantitative assessment to evaluate osteoblast alteration by drug treatment. Image analysis method is practical and might be useful for other applications in the field of biology and medical sciences. It could also be employed in a combination with the conventional assays to strengthen the data.
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Affiliation(s)
- Somying Patntirapong
- Thammasat University Research Unit in Dental and Bone Substitute Biomaterials, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand.
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Effect of in vivo low-level laser therapy on bone marrow-derived mesenchymal stem cells in ovariectomy-induced osteoporosis of rats. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 175:29-36. [DOI: 10.1016/j.jphotobiol.2017.08.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/09/2017] [Accepted: 08/15/2017] [Indexed: 11/21/2022]
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Rapposelli S, Gambari L, Digiacomo M, Citi V, Lisignoli G, Manferdini C, Calderone V, Grassi F. A Novel H2S-releasing Amino-Bisphosphonate which combines bone anti-catabolic and anabolic functions. Sci Rep 2017; 7:11940. [PMID: 28931828 PMCID: PMC5607332 DOI: 10.1038/s41598-017-11608-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 08/25/2017] [Indexed: 11/09/2022] Open
Abstract
Bisphosphonates (BPs) are the first-line treatment of bone loss resulting from various pathological conditions. Due to their high affinity to bone they have been used to develop conjugates with pro-anabolic or anti-catabolic drugs. We recently demontrated that hydrogen sulfide (H2S), promotes osteogenesis and inhibits osteoclast differentiation. Here we developed an innovative molecule, named DM-22, obtained from the combination of alendronate (AL) and the H2S-releasing moiety aryl-isothiocyanate. DM-22 and AL were assayed in vitro in the concentration range 1-33 μM for effects on viability and function of human osteoclasts (h-OCs) and mesenchymal stromal cells (h-MSCs) undergoing osteogenic differentiation. Amperometric measures revealed that DM-22 releases H2S at a slow rate with a thiol-dependent mechanism. DM-22 significantly inhibited h-OCs differentiation and function, maintaining a residual h-OCs viability even at the high dose of 33 μM. Contrary to AL, in h-MSCs DM-22 did not induce cytotoxicity as revealed by LDH assay, significantly stimulated mineralization as measured by Alizarin Red staining and increased mRNA expression of Collagen I as compared to control cultures. In conclusion, DM-22 is a new BP which inhibits h-OCs function and stimulate osteogenic differentiation of h-MSCs, without cytotoxicity. DM-22 is an ideal candidate for a novel family of osteoanabolic drugs.
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Affiliation(s)
- Simona Rapposelli
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, I-56126, Pisa, Italy
| | - Laura Gambari
- Laboratorio RAMSES, Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136, Bologna, Italy
| | - Maria Digiacomo
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, I-56126, Pisa, Italy
| | - Valentina Citi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, I-56126, Pisa, Italy
| | - Gina Lisignoli
- S.C. Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136, Bologna, Italy
| | - Cristina Manferdini
- S.C. Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136, Bologna, Italy
| | - Vincenzo Calderone
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, I-56126, Pisa, Italy
| | - Francesco Grassi
- Laboratorio RAMSES, Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136, Bologna, Italy.
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Abstract
The use of bisphosphonates in treatment of osteoporosis declined significantly over the past decade. There is currently great concern, among patients and physicians, about two potential skeletal adverse effects associated with bisphosphonates- jaw osteonecrosis and atypical femur fractures. This has become a major public health issue since untreated osteoporosis carries a significant burden in terms of fracture-related morbidity and mortality, and bisphosphonates, considered first-line therapy for osteoporosis, have established efficacy in fracture and mortality reduction. Areas covered: In this review we discuss current literature on osteonecrosis of the jaw and atypical femur fractures in patients with osteoporosis treated with bisphosphonates, including case definition, pathogenesis, epidemiology, risk factors, clinical presentation, management and prevention. We conducted a literature search using PubMed and PubMed Central, using the search terms 'bisphosphonates', 'osteonecrosis of the jaw', and 'atypical fractures'. We selected relevant articles including meta-analyses, clinical trials, observational studies, and major society guidelines published between 2010 and 2016, to be included in this review. A few articles published prior to 2010 were also included as references. Expert commentary: The rare skeletal side effects of bisphosphonates should not preclude their use in patients with osteoporosis and high fracture risk, as benefits significantly outweigh the risks.
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Affiliation(s)
- Zeina A Habib
- a Department of Internal Medicine, Division of Endocrinology , Central Michigan University Medical Education Partners
- b Central Michigan University College of Medicine , Saginaw , MI , USA
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