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Pourabbas R, Farajzadeh S, Babaloo A, Pazhohan A, Sadighi M, Hajebrahimi S, Pourabbas S, Tenenbaum HC. The association between oral inflammatory load and semen and sperm functional analysis: A cross-sectional study. J Dent Res Dent Clin Dent Prospects 2023; 17:188-195. [PMID: 38023802 PMCID: PMC10676540 DOI: 10.34172/joddd.2023.37106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 08/15/2023] [Indexed: 12/01/2023] Open
Abstract
Background Studies have suggested a correlation between periodontitis and reduced male fertility. Inflammation has been described as the link between these ailments. Oral inflammatory load (OIL) can be measured through oral polymorphonuclear neutrophil (oPMN) count, which is associated with periodontal diseases. This cross-sectional study assessed the possible correlation between OIL and the functional parameters of sperm cells. Methods In 229 volunteers, oral rinse and semen samples were assessed for oPMN, semen polymorphonuclears (sPMNs), sperm concentration, total sperm count, motility, morphology, and sperm DNA fragmentation index (SDFi). A multiple linear regression model was conducted to evaluate the relationships between oPMN and semen parameters. Results The effect of elevated oPMN counts on total motility rate, progressive rate, and percentage of sperm cells with normal morphology was significant (P<0.001), with an inverse relationship, i.e., with every unit increase in oPMN count, the mentioned parameters would decline by 0.573, 0.367, and 0.407 units, respectively. oPMN counts also correlated positively with sPMN counts and SDFi (P<0.001), i.e., with every unit increase in the oPMN measures, sPMN counts would increase by 0.126 million/mL, with an 0.733% increase in SDFi. However, there was no significant association between oPMN counts and sperm concentration. Conclusion OIL, as represented by oPMN counts, might affect male fertility as there is a positive correlation between the levels of these inflammatory cells and decreased sperm motility, abnormal morphological changes, increased sPMN counts, and increased SDFi.
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Affiliation(s)
- Reza Pourabbas
- Department of Periodontology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
- Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samin Farajzadeh
- Department of Periodontology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amirreza Babaloo
- Department of Periodontology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azar Pazhohan
- Omid Infertility Treatment Center, Valiasr Hospital, Tabriz, Iran
| | - Mehrnoosh Sadighi
- Department of Periodontology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sakineh Hajebrahimi
- Research Center for Evidence-based Medicine, Urology Department, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sajjad Pourabbas
- School of Kinesiology and Health Sciences, York University, Toronto, Canada
| | - Howard C Tenenbaum
- Faculty of Dentistry, University of Toronto, Toronto, Canada
- Faculty of Medicine, University of Toronto, Toronto, Canada
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Nishtala K, Panigrahi T, Shetty R, Kumar D, Khamar P, Mohan RR, Deshpande V, Ghosh A. Quantitative Proteomics Reveals Molecular Network Driving Stromal Cell Differentiation: Implications for Corneal Wound Healing. Int J Mol Sci 2022; 23:ijms23052572. [PMID: 35269714 PMCID: PMC8910342 DOI: 10.3390/ijms23052572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 02/12/2022] [Accepted: 02/13/2022] [Indexed: 11/16/2022] Open
Abstract
The differentiation of keratocytes to fibroblasts and myofibroblasts is an essential requisite during corneal wound closure. The aim of this study is to uncover factors involved in differentiation-dependent alteration in the protein profile of human corneal stromal cells using quantitative proteomics. Human corneal fibroblasts were cultured and differentiated into keratocytes in serum-free media and myofibroblasts through treatment with TGF-β. The protein cell lysates from the donors were tryptic and were digested and labeled using a 3-plex iTRAQ kit. The labeled peptides were subjected to LCMS analysis. Biological functional analysis revealed a set of crucial proteins involved in the differentiation of human corneal stromal cells which were found to be significantly enriched. The selected proteins were further validated by immunohistochemistry. Quantitative proteomics identified key differentially expressed proteins which are involved in cellular signaling pathways. Proteins involved in integrin signaling (Ras-RAP1b, TLN and FN) and SLIT-ROBO pathways (PFN1, CAPR1, PSMA5) as well as extracellular matrix proteins (SERPINH1, SPARC, ITGβ1, CRTAP) showed enhanced expression in corneal fibroblasts and myofibroblasts compared to keratocytes, indicating their possible role in wound healing. Corneal stromal cell differentiation is associated with the activation of diverse molecular pathways critical for the repair of fibroblasts and myofibroblasts. Identified proteins such as profilin 1 and talin could play a tentative role in corneal healing and serve as a potential target to treat corneal fibrosis.
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Affiliation(s)
- Krishnatej Nishtala
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
| | - Trailokyanath Panigrahi
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
| | - Rohit Shetty
- Cornea and Refractive Services, Narayana Nethralaya, Bangalore 560010, India; (R.S.); (P.K.)
| | - Dhanananajay Kumar
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
| | - Pooja Khamar
- Cornea and Refractive Services, Narayana Nethralaya, Bangalore 560010, India; (R.S.); (P.K.)
| | - Rajiv R. Mohan
- Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO 65201, USA;
- Department of Veterinary Medicine & Surgery and Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65212, USA
- College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA
- Mason Eye Institute, School of Medicine, University of Missouri, Columbia, MO 65201, USA
| | - Vrushali Deshpande
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
- Correspondence: (V.D.); (A.G.)
| | - Arkasubhra Ghosh
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
- Correspondence: (V.D.); (A.G.)
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Nair S, Nisha KJ. Evaluation of the effect of scaling and root planing on salivary and serum fetuin-A levels in patients with stages II and III periodontitis. J Periodontol 2021; 93:177-186. [PMID: 33997977 DOI: 10.1002/jper.21-0179] [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: 03/23/2021] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 01/27/2023]
Abstract
BACKGROUND Fetuin-A has garnered recognition in the etiopathogenesis of several systemic disorders. It has been recently acknowledged as an anti-inflammatory marker for periodontal disease. This study aimed to compare and correlate salivary and serum fetuin-A levels in health and patients with stages II-III periodontitis along with evaluating the effect of non-surgical periodontal therapy (NSPT) on the same. METHODS Group 1 comprised of 30 healthy subjects. Group 2 embodied 30 patients with stages II-III periodontitis. Clinical periodontal parameters were recorded. Saliva and serum samples were assembled. Periodontitis patients received non-surgical periodontal treatment. They were recalled after 6 months, and collection of samples and recording of clinical parameters were reiterated. Fetuin-A levels were analyzed using ELISA. RESULTS Salivary and serum fetuin-A levels were significantly lower in periodontitis patients when compared with the healthy subjects (P < 0.001) at baseline. Their concentrations significantly upregulated 6 months after active periodontal therapy (P < 0.001). Salivary fetuin-A levels revealed a significant positive correlation with their serum levels in Group 1 at baseline (P < 0.001). They also displayed a positive correlation in Group 2 at baseline and 6 months post periodontal therapy, nevertheless failed to establish a statistically significant association. CONCLUSION(S) Our study concluded that salivary and serum fetuin-A levels diminished with increasing severity of periodontal inflammation, and NSPT remarkably improved their levels. They also displayed a significant positive correlation in health, and a non-significant, yet positive correlation in patients with periodontitis.
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Affiliation(s)
- Sanjita Nair
- Department of Periodontics, Vydehi Institute of Dental Sciences and Research Center, Bengaluru, India
| | - K J Nisha
- Department of Periodontics, Vydehi Institute of Dental Sciences and Research Center, Bengaluru, India
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The regulating effect of trace elements Si, Zn and Sr on mineralization of gelatin-hydroxyapatite electrospun fiber. Colloids Surf B Biointerfaces 2021; 204:111822. [PMID: 33984616 DOI: 10.1016/j.colsurfb.2021.111822] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 04/10/2021] [Accepted: 05/01/2021] [Indexed: 10/21/2022]
Abstract
Biomineralization approaches have been increasingly adopted to synthesizing advanced materials with superior properties. Nevertheless, the potential influence of inorganic trace elements on the mineralization process of collagen has been rarely reported, despite of the significant progress achieved on exploiting the critical roles of organic polymers in regulating the collagen mineralization. To this aim, the potential roles of Si, Zn and Sr in regulating the mineralization of gelatin-hydroxyapatite (HA) composite fibers have been examined in this study. The results indicated that the incorporation of trace elements not only promoted the biomineralization of gelatin, but also led to drastic change in the mineralization behavior. In particular, the gelatin-SiHA sample showed uniform mineralization predominantly inside the fibers, with nucleation and growth directions along the c-axis of the gelatin fibers. On the contrary, the gelatin-HA sample showed nucleation outside the fibers and spherical mineral crystals on top of fibers, typical structure for heterogeneous nucleation. As the mineralization process proceeded, the gelatin-ZnHA and gelatin-SrHA samples evolved into having similar structure as the gelatin-SiHA sample, despite of showing totally different mineralization behaviors at early time. Overall, the incorporation of trace elements seemed to lower the nucleation barriers, led to a more homogeneous mineralization mode within the fiber region and formation of mineralized structures closer to those in natural bone. Moreover, mineralized samples with trace elements demonstrated improved adhesion and cytoskeleton organization of osteoblastic cells. Such finding would provide important insight for understanding the mineralization process and the optimal design of advanced biological materials.
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The Role of Matrix Metalloproteinases in Periodontal Disease. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17144923. [PMID: 32650590 PMCID: PMC7399864 DOI: 10.3390/ijerph17144923] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 12/19/2022]
Abstract
This review provides a detailed description of matrix metalloproteinases (MMPs), focusing on those that are known to have critical roles in bone and periodontal disease. Periodontal disease is an inflammatory process initiated by anaerobic bacteria, which promote the host immune response in the form of a complex network of molecular pathways involving proinflammatory mediators such as cytokines, growth factors, and MMPs. MMPs are a family of 23 endopeptidases, collectively capable of degrading virtually all extracellular matrix (ECM) components. This study critically discusses the available research concerning the involvement of the MMPs in periodontal disease development and progression and presents possible therapeutic strategies. MMPs participate in morphogenesis, physiological tissue turnover, and pathological tissue destruction. Alterations in the regulation of MMP activity are implicated in the manifestation of oral diseases, and MMPs comprise the most important pathway in tissue destruction associated with periodontal disease. MMPs can be considered a risk factor for periodontal disease, and measurements of MMP levels may be useful markers for early detection of periodontitis and as a tool to assess prognostic follow-ups. Detection and inhibition of MMPs could, therefore, be useful in periodontal disease prevention or be an essential part of periodontal disease therapy, which, considering the huge incidence of the disease, may greatly improve oral health globally.
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Thankam FG, Chandra I, Diaz C, Dilisio MF, Fleegel J, Gross RM, Agrawal DK. Matrix regeneration proteins in the hypoxia-triggered exosomes of shoulder tenocytes and adipose-derived mesenchymal stem cells. Mol Cell Biochem 2019; 465:75-87. [PMID: 31797254 DOI: 10.1007/s11010-019-03669-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/30/2019] [Indexed: 12/14/2022]
Abstract
Regenerative functions of exosomes rely on their contents which are influenced by pathological stimuli, including hypoxia, in rotator cuff tendon injuries (RCTI). The hypoxic environment triggers tenocytes and adjacent adipose-derived mesenchymal stem cells (ADMSCs) to release regenerative mediators to the ECM via the exosomes which elicit autocrine/paracrine responses to protect the tendon matrix from injury. We investigated the exosomal protein contents from tenocytes and subcutaneous ADMSCs from the shoulder of Yucatan microswine cultured under hypoxic conditions (2% O2). The exosomal proteins were detected using high-resolution mass spectrometry nano-LC-MS/MS Tribrid system and were compiled using 'Scaffold' software. Hypoxic exosomes from tenocytes and ADMSCs carried 199 and 65 proteins, respectively. The key proteins identified by mass spectrometry and associated with ECM homeostasis from hypoxic ADMSCs included MMP2, COL6A, CTSD and TN-C and those from hypoxic tenocytes were THSB1, NSEP1, ITIH4 and TN-C. These findings were confirmed at the mRNA and protein level in the hypoxic ADMSCs and tenocytes. These proteins are involved in multiple signaling pathways of ECM repair/regeneration. This warrants further investigations for their translational significance in the management of RCTI.
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Affiliation(s)
- Finosh G Thankam
- Department of Translational Research, Western University of Health Sciences, 309 E. Second Street, Pomona, CA, 91766-1854, USA
| | - Isaiah Chandra
- Departments of Clinical & Translational Science and Orthopedic Surgery, Creighton University School of Medicine, Omaha, NE, 68178, USA
| | - Connor Diaz
- Departments of Clinical & Translational Science and Orthopedic Surgery, Creighton University School of Medicine, Omaha, NE, 68178, USA
| | - Matthew F Dilisio
- Departments of Clinical & Translational Science and Orthopedic Surgery, Creighton University School of Medicine, Omaha, NE, 68178, USA
| | - Jonathan Fleegel
- Departments of Clinical & Translational Science and Orthopedic Surgery, Creighton University School of Medicine, Omaha, NE, 68178, USA
| | - R Michael Gross
- Departments of Clinical & Translational Science and Orthopedic Surgery, Creighton University School of Medicine, Omaha, NE, 68178, USA
| | - Devendra K Agrawal
- Department of Translational Research, Western University of Health Sciences, 309 E. Second Street, Pomona, CA, 91766-1854, USA.
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Sharma V, Hanafi A, Overgaard CB, Shaibani M, An K, Dzavik V, Glogauer M, Tenenbaum HC. Oral inflammatory load in patients with coronary artery disease. J Oral Sci 2019; 61:412-417. [PMID: 31462624 DOI: 10.2334/josnusd.18-0299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Periodontitis is an oral inflammatory disease that may have an association with coronary artery disease (CAD). Oral inflammatory load (OIL) can be quantified by assesment of oral polymorphonucleocytes (oPMN) in an oral rinse assay. The aim of the present study was to prospectively correlate OIL with CAD on angiography assessed in terms of SYNTAX score in patients presenting with stable angina or acute coronary syndrome (ACS). Consecutive eligible patients at a cardiac center were prospectively recruited. Two sets of oral rinse samples were collected before and after angiography, and the relationship between oPMN and SYNTAX score was assessed. Of the 137 patients recruited, 32.8% (n = 45) were female and 34.3% (n = 47) had diabetes mellitus. The overall mean oPMN count was low (mean 1.3 × 105 cells/mL), and the mean SYNTAX score was 7.4 ± 8.5. Most of the patients presented with stable angina (89.8%, n =123). Patients with oPMN ≥1.45 × 105 (periodontitis threshold) were more likely to be elderly males presenting with stable angina. No significant correlation was established between oPMN and SYNTAX score. Although this prospective study did not demonstrate a correlation between OIL and the severity of CAD, most patients had low mean oPMN values. Larger studies are required before definite conclusions can be drawn.
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Affiliation(s)
| | | | | | - May Shaibani
- Peter Munk Cardiac Centre, Toronto General Hospital
| | - Kevin An
- Peter Munk Cardiac Centre, Toronto General Hospital
| | | | - Michael Glogauer
- Faculty of Dentistry, University of Toronto.,Mount Sinai Hospital, Centre for Advanced Dental Research and Care, Department of Dentistry, University of Toronto
| | - Howard C Tenenbaum
- Faculty of Dentistry, University of Toronto.,Mount Sinai Hospital, Centre for Advanced Dental Research and Care, Department of Dentistry, University of Toronto
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Mazzoni A, Maravić T, Tezvergil-Mutluay A, Tjäderhane L, Scaffa PMC, Seseogullari-Dirihan R, Bavelloni A, Gobbi P, Pashley DH, Tay FR, Breschi L. Biochemical and immunohistochemical identification of MMP-7 in human dentin. J Dent 2018; 79:90-95. [PMID: 30367893 DOI: 10.1016/j.jdent.2018.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 09/23/2018] [Accepted: 10/22/2018] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES Matrix metalloproteinases (MMPs) are dentinal endogenous enzymes claimed to have a vital role in dentin organic matrix breakdown. The aim of the study was to investigate presence, localization and distribution of MMP-7 in sound human dentin. METHODS Dentin was powdered, demineralized and dissolved in isoelectric focusing buffer. Resolved proteins were transferred to nitrocellulose membranes for western blotting (WB) analyses. For the zymographic analysis, aliquots of dentin protein were electrophoresed in 12% sodium dodecyl sulfate-polyacrylamide gel electrophoresis containing fluorescently labeled gelatin. Further, the concentrations of dentinal MMPs were measured using Fluorescent Microsphere Immunoassay with a human MMP-MAP multiplex kit. Pre- and post-embedding immunolabeling technique was used to investigate the localization and distribution of MMP-7 in dentin. Dentin was cryo-fractured, the fragments partially decalcified and labeled with a primary monoclonal anti-MMP-7 and a secondary antibody conjugated with gold nanoparticles. MMP-7 labelings were identified in the demineralized dentin matrix as highly electron-dense dispersed gold particles. RESULTS WB and zymographic analysis of extracted dentin proteins showed presence of MMP-7 (∼20-28 KDa). Further, MMP-7 was found in the supernatants of the incubated dentin beams using Fluorescent Microsphere Immunoassay. FEI-SEM and TEM analyses established MMP-7 as an intrinsic constituent of the human dentin organic matrix. CONCLUSION This study demonstrated that MMP-7 is an endogenous component of the human dentin fibrillar network. CLINICAL SIGNIFICANCE It is pivotal to understand the underlying processes behind dentin matrix remodeling and degradation in order to develop the most optimal clinical protocols and ensure the longevity of dental restorations.
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Affiliation(s)
- Annalisa Mazzoni
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna-Alma Mater Studiorum, Via San Vitale 59, Bologna, Italy.
| | - Tatjana Maravić
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna-Alma Mater Studiorum, Via San Vitale 59, Bologna, Italy.
| | - Arzu Tezvergil-Mutluay
- Department of Restorative Dentistry and Cariology, Adhesive Dentistry Research Group Institute of Dentistry, University of Turku, FI-20014 Turun Yliopisto, Turku Finland; Turku University Hospital, Kiinamyllynkatu 4-8 Turku, Finland.
| | - Leo Tjäderhane
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki University Hospital, Mannerheimintie 172, 00014 Helsinki, Finland; Research Unit of Oral Health Sciences, Medical Research Center Oulu (MRC Oulu), Oulu University Hospital and University of Oulu, Pentti Kaiteran katu 1, Linnanmaa, Oulu, Finland.
| | | | - Roda Seseogullari-Dirihan
- Department of Restorative Dentistry and Cariology, Adhesive Dentistry Research Group Institute of Dentistry, University of Turku, FI-20014 Turun Yliopisto, Turku Finland; Turku University Hospital, Kiinamyllynkatu 4-8 Turku, Finland.
| | - Alberto Bavelloni
- Laboratory of Musculoskeletal Cell Biology, Rizzoli Orthopedic Institute, Via di Barbiano, 1/10, 40136 Bologna, Italy.
| | - Pietro Gobbi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Via Aurelio Saffi 2, Urbino, Italy.
| | - David H Pashley
- The Dental College of Georgia, Augusta University, 1430 John Wesley Gilbert Drive, Augusta, Georgia, USA.
| | - Franklin R Tay
- The Dental College of Georgia, Augusta University, 1430 John Wesley Gilbert Drive, Augusta, Georgia, USA.
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna-Alma Mater Studiorum, Via San Vitale 59, Bologna, Italy.
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Türer ÇC, Ballı U, Güven B. Fetuin-A, serum amyloid A and tumor necrosis factor alpha levels in periodontal health and disease. Oral Dis 2017; 23:379-386. [DOI: 10.1111/odi.12625] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 11/24/2016] [Accepted: 12/13/2016] [Indexed: 12/19/2022]
Affiliation(s)
- ÇC Türer
- Department of Periodontology; Faculty of Dentistry; Bulent Ecevit University; Zonguldak Turkey
| | - U Ballı
- Department of Periodontology; Faculty of Dentistry; Bulent Ecevit University; Zonguldak Turkey
| | - B Güven
- Department of Biochemistry; Faculty of Medicine; Bulent Ecevit University; Zonguldak Turkey
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Study of the participation of MMP-7, EMMPRIN and cyclophilin A in the pathogenesis of periodontal disease. Arch Oral Biol 2016; 72:172-178. [DOI: 10.1016/j.archoralbio.2016.08.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 07/08/2016] [Accepted: 08/25/2016] [Indexed: 01/06/2023]
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Vassalle C, Mazzone A. Bone loss and vascular calcification: A bi-directional interplay? Vascul Pharmacol 2016; 86:77-86. [DOI: 10.1016/j.vph.2016.07.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 06/22/2016] [Accepted: 07/01/2016] [Indexed: 02/07/2023]
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Fukui T, Tenborg E, Yik JHN, Haudenschild DR. In-vitro and in-vivo imaging of MMP activity in cartilage and joint injury. Biochem Biophys Res Commun 2015; 460:741-6. [PMID: 25817731 DOI: 10.1016/j.bbrc.2015.03.100] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 03/18/2015] [Indexed: 12/26/2022]
Abstract
Non-destructive detection of cartilage-degrading activities represents an advance in osteoarthritis (OA) research, with implications in studies of OA pathogenesis, progression, and intervention strategies. Matrix metalloproteinases (MMPs) are principal cartilage degrading enzymes that contribute to OA pathogenesis. MMPSense750 is an in-vivo fluorimetric imaging probe with the potential to continuously and non-invasively trace real-time MMP activities, but its use in OA-related research has not been reported. Our objective is to detect and characterize the early degradation activities shortly after cartilage or joint injury with MMPSense750. We determined the appropriate concentration, assay time, and linear range using various concentrations of recombinant MMPs as standards. We then quantified MMP activity from cartilage explants subjected to either mechanical injury or inflammatory cytokine treatment in-vitro. Finally, we performed in-vivo MMP imaging of a mouse model of post-traumatic OA. Our in-vitro results showed that the optimal assay time was highly dependent on the MMP enzyme. In cartilage explant culture media, mechanical impact or cytokine treatment increased MMP activity. Injured knees of mice showed significantly higher fluorescent signal than uninjured knees. We conclude that MMPSense750 detects human MMP activities and can be used for in-vitro study with cartilage, as well as in-vivo studies of knee injury, and can offering real-time insight into the degradative processes that occurring within the joint before structural changes become evident radiographically.
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Affiliation(s)
- Tomoaki Fukui
- Lawrence J. Ellison Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of California Davis Medical Center, 4635 Second Avenue Suite 2000, Sacramento CA 95817, USA
| | - Elizabeth Tenborg
- Lawrence J. Ellison Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of California Davis Medical Center, 4635 Second Avenue Suite 2000, Sacramento CA 95817, USA
| | - Jasper H N Yik
- Lawrence J. Ellison Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of California Davis Medical Center, 4635 Second Avenue Suite 2000, Sacramento CA 95817, USA
| | - Dominik R Haudenschild
- Lawrence J. Ellison Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of California Davis Medical Center, 4635 Second Avenue Suite 2000, Sacramento CA 95817, USA.
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Huda S, Doering H, Tenenbaum HC, Whittle W, Sigal MJ, Glogauer M. Oral Neutrophil Levels: A Screening Test for Oral Inflammatory Load in Pregnancy in a Medical Setting. J Periodontol 2015; 86:72-81. [DOI: 10.1902/jop.2014.140116] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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