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Rodríguez-Camejo C, Puyol A, Arbildi P, Sóñora C, Fazio L, Siré G, Hernández A. Effects of human donor milk on gut barrier function and inflammation: in vitro study of the beneficial properties to the newborn. Front Immunol 2023; 14:1282144. [PMID: 38022652 PMCID: PMC10663376 DOI: 10.3389/fimmu.2023.1282144] [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: 08/23/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The gastrointestinal and immune systems of premature infants are not fully developed, rendering them more vulnerable to severe complications like necrotizing enterocolitis. Human milk offers a rich array of bioactive factors that collectively contribute to reducing the incidence of gut infections and inflammatory conditions. When a mother's milk is unavailable, preterm infants are often provided with donor human milk processed in Human Milk Banks. However, it remains uncertain whether pasteurized milk confers the same level of risk reduction as unprocessed milk. This uncertainty may stem from the well-documented adverse effects of heat treatment on milk composition. Yet, our understanding of the comprehensive impact on protective mechanisms is limited. Methods In this study, we conducted a comparative analysis of the effects of raw versus pasteurized milk and colostrum versus mature milk on cellular functions associated with the gut epithelial barrier and responses to inflammatory stimuli. We utilized THP-1 and HT-29 cell lines, representing monocyte/macrophages and gut epithelial cells, respectively. Results Our observations revealed that all milk types stimulated epithelial cell proliferation. However, only raw colostrum increased cell migration and interfered with the interaction between E. coli and epithelial cells. Furthermore, the response of epithelial and macrophage cells to lipopolysaccharide (LPS) was enhanced solely by raw colostrum, with a milder effect observed with mature milk. In contrast, both raw and pasteurized milk diminished the LPS induced response in monocytes. Lastly, we examined how milk affected the differentiation of monocytes into macrophages, finding that milk reduced the subsequent inflammatory response of macrophages to LPS. Discussion Our study sheds light on the impact of human milk on certain mechanisms that potentially account for its protective effects against necrotizing enterocolitis, highlighting the detrimental influence of pasteurization on some of these mechanisms. Our findings emphasize the urgency of developing alternative pasteurization methods to better preserve milk properties. Moreover, identifying the key components critically affected by these protective mechanisms could enable their inclusion in donor milk or formula, thereby enhancing immunological benefits for vulnerable newborns.
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Affiliation(s)
- Claudio Rodríguez-Camejo
- Área Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, Montevideo, Uruguay
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Inmunología, Instituto de Higiene “Prof. Arnoldo Berta”, Universidad de la República, Montevideo, Uruguay
| | - Arturo Puyol
- Banco de Leche “Ruben Panizza”, Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Paula Arbildi
- Área Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, Montevideo, Uruguay
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Inmunología, Instituto de Higiene “Prof. Arnoldo Berta”, Universidad de la República, Montevideo, Uruguay
| | - Cecilia Sóñora
- Área Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, Montevideo, Uruguay
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Inmunología, Instituto de Higiene “Prof. Arnoldo Berta”, Universidad de la República, Montevideo, Uruguay
- Escuela Universitaria de Tecnología Médica (EUTM), Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Laura Fazio
- Banco de Leche “Ruben Panizza”, Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Gabriela Siré
- Banco de Leche “Ruben Panizza”, Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Ana Hernández
- Área Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, Montevideo, Uruguay
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Inmunología, Instituto de Higiene “Prof. Arnoldo Berta”, Universidad de la República, Montevideo, Uruguay
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Balázs G, Balajthy A, Seri I, Hegyi T, Ertl T, Szabó T, Röszer T, Papp Á, Balla J, Gáll T, Balla G. Prevention of Chronic Morbidities in Extremely Premature Newborns with LISA-nCPAP Respiratory Therapy and Adjuvant Perinatal Strategies. Antioxidants (Basel) 2023; 12:1149. [PMID: 37371878 DOI: 10.3390/antiox12061149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
Less invasive surfactant administration techniques, together with nasal continuous airway pressure (LISA-nCPAP) ventilation, an emerging noninvasive ventilation (NIV) technique in neonatology, are gaining more significance, even in extremely premature newborns (ELBW), under 27 weeks of gestational age. In this review, studies on LISA-nCPAP are compiled with an emphasis on short- and long-term morbidities associated with prematurity. Several perinatal preventative and therapeutic investigations are also discussed in order to start integrated therapies as numerous organ-saving techniques in addition to lung-protective ventilations. Two thirds of immature newborns can start their lives on NIV, and one third of them never need mechanical ventilation. With adjuvant intervention, these ratios are expected to be increased, resulting in better outcomes. Optimized cardiopulmonary transition, especially physiologic cord clamping, could have an additively beneficial effect on patient outcomes gained from NIV. Organ development and angiogenesis are strictly linked not only in the immature lung and retina, but also possibly in the kidney, and optimized interventions using angiogenic growth factors could lead to better morbidity-free survival. Corticosteroids, caffeine, insulin, thyroid hormones, antioxidants, N-acetylcysteine, and, moreover, the immunomodulatory components of mother's milk are also discussed as adjuvant treatments, since immature newborns deserve more complex neonatal interventions.
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Affiliation(s)
- Gergely Balázs
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - András Balajthy
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - István Seri
- First Department of Pediatrics, School of Medicine, Semmelweis University, 1083 Budapest, Hungary
- Keck School of Medicine of USC, Children's Hospital of Los Angeles, Los Angeles, CA 90033, USA
| | - Thomas Hegyi
- Department of Pediatrics, Division of Neonatology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903, USA
| | - Tibor Ertl
- Departments of Neonatology and Obstetrics & Gynecology, University of Pécs Medical School, 7624 Pécs, Hungary
- MTA-PTE Human Reproduction Scientific Research Group, University of Pécs, 7624 Pécs, Hungary
| | - Tamás Szabó
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Tamás Röszer
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Ágnes Papp
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - József Balla
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- ELKH-UD Vascular Pathophysiology Research Group, Hungarian Academy of Sciences, University of Debrecen, 4032 Debrecen, Hungary
| | - Tamás Gáll
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - György Balla
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- ELKH-UD Vascular Pathophysiology Research Group, Hungarian Academy of Sciences, University of Debrecen, 4032 Debrecen, Hungary
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Flavonoids from Dalbergia cochinchinensis: Impact on osteoclastogenesis. J Dent Sci 2023; 18:112-119. [PMID: 36643234 PMCID: PMC9831843 DOI: 10.1016/j.jds.2022.06.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 06/29/2022] [Indexed: 01/18/2023] Open
Abstract
Background/purpose Dalbergia cochinchinensi has been widely used in traditional medicine because of its flavonoids. This study examined which components in D. cochinchinensis were capable of reducing or even stimulating the formation of bone-resorbing osteoclasts. Materials and methods We have isolated subfamilies of chalcones (isoliquiritigenin, butein), flavones (7-hydroxy-6-methoxyflavone) and neoflavanoids (5-methoxylatifolin), and performed an in vitro bioassay on osteoclastogenesis. The flavonoids were tested for their potential to change the expression of tartrate-resistant acid phosphatase (TRAP) and cathepsin K (CTSK) in murine bone marrow cultures being exposed to RANKL, M-CSF and TGF-β1 using RT-PCR, histochemistry and immunoassay. Results We could confirm that isoliquiritigenin and butein significantly lower the expression of TRAP and CTSK in this setting. Moreover, histochemistry supported the decrease of TRAP by the chalcones. We further observed a trend towards an increase of osteoclastogenesis in the presence of 5-methoxylatifolin and 7-hydroxy-6-methoxyflavone, particular in bone marrow cultures being exposed to RANKL and M-CSF. Consistently, the anti-inflammatory activity was restricted to isoliquiritigenin and butein in murine RAW 264.7 inflammatory macrophages stimulated by lipopolysaccharide (LPS). With respect to osteoblastogenesis, neither of the flavonoids but butyrate, a short chain fatty acid, increased the osteogenic differentiation marker alkaline phosphatase activity in ST2 murine mesenchymal cells. Conclusion We have identified two flavonoids from D. cochinchinensis with a potential pro-osteoclastogenic activity and confirm the anti-osteoclastogenic activity of isoliquiritigenin and butein.
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Panahipour L, Sordi MB, Kargarpour Z, Gruber R. TGF-β Signalling Mediates the Anti-Inflammatory Activity of Enamel Matrix Derivative In Vitro. Int J Mol Sci 2022; 23:9778. [PMID: 36077174 PMCID: PMC9456059 DOI: 10.3390/ijms23179778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/21/2022] Open
Abstract
Enamel matrix derivative (EMD) prepared from extracted porcine fetal tooth material can support the regrow of periodontal tissues. Previous findings suggest that EMD has anti-inflammatory properties and TGF-β activity in vitro. However, the anti-inflammatory activity of EMD is mediated via TGF-β has not been considered. To this aim, we first established a bioassay to confirm the anti-inflammatory activity of EMD. The bioassay was based on the RAW 264.7 macrophage cell line and proven with primary macrophages where EMD significantly reduced the forced expression of IL-6. We then confirmed the presence of TGF-β1 in EMD by immunoassay and by provoking the Smad2/3 nuclear translocation in RAW 264.7 macrophages. Next, we took advantage of the TGF-β receptor type I kinase-inhibitor SB431542 to block the respective signalling pathway. SB431542 reversed the anti-inflammatory activity of EMD and TGF-β in a bioassay when IL-6 and CXCL2 expression was driven by the LPS stimulation of RAW 264.7 macrophages. This central observation was supported by showing that SB431542 reversed the anti-inflammatory activity of EMD using IL-1β and TNF-α-stimulated ST2 bone marrow stromal cells. Together, these findings implicate that the TGF-β activity mediates at least part of the anti-inflammatory activity of EMD in vitro.
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Affiliation(s)
- Layla Panahipour
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090 Vienna, Austria
| | - Mariane Beatriz Sordi
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090 Vienna, Austria
| | - Zahra Kargarpour
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090 Vienna, Austria
| | - Reinhard Gruber
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090 Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010 Bern, Switzerland
- Austrian Cluster for Tissue Regeneration, Donaueschingenstraße 13, 1200 Vienna, Austria
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Panahipour L, Abbasabadi AO, Kaiser V, Sordi MB, Kargarpour Z, Gruber R. Damaged Mesenchymal Cells Dampen the Inflammatory Response of Macrophages and the Formation of Osteoclasts. J Clin Med 2022; 11:jcm11144061. [PMID: 35887825 PMCID: PMC9319356 DOI: 10.3390/jcm11144061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/29/2022] [Accepted: 07/11/2022] [Indexed: 01/25/2023] Open
Abstract
Damage to mesenchymal cells occurs by dental implant drills as a consequence of shear forces and heat generation. However, how the damaged mesenchymal cells can affect the polarization of macrophages and their differentiation into osteoclastogenesis is not fully understood. To simulate cell damage, we exposed suspended ST2 murine bone marrow stromal cells to freeze/thawing or sonication cycles, followed by centrifugation. We then evaluated the lysates for their capacity to modulate lipopolysaccharide-induced macrophage polarization and RANKL-MCSF-TGF-β-induced osteoclastogenesis. We report that lysates of ST2, particularly when sonicated, greatly diminished the expression of inflammatory IL6 and COX2 as well as moderately increased arginase 1 in primary macrophages. That was confirmed by lysates obtained from the osteocytic cell line IDG-SW3. Moreover, the ST2 lysate lowered the phosphorylation of p65 and p38 as well as the nuclear translocation of p65. We further show herein that lysates of damaged ST2 reduced the formation of osteoclast-like cells characterized by their multinuclearity and the expression of tartrate-resistant phosphatase and cathepsin K. Taken together, our data suggest that thermal and mechanical damage of mesenchymal cells causes the release of as-yet-to-be-defined molecules that dampen an inflammatory response and the formation of osteoclasts in vitro.
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Affiliation(s)
- Layla Panahipour
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.); (V.K.); (M.B.S.); (Z.K.)
| | - Azarakhsh Oladzad Abbasabadi
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.); (V.K.); (M.B.S.); (Z.K.)
| | - Viktoria Kaiser
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.); (V.K.); (M.B.S.); (Z.K.)
| | - Mariane Beatriz Sordi
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.); (V.K.); (M.B.S.); (Z.K.)
- Department of Dentistry, Federal University of Santa Catarina, Florianopolis 88040-900, Brazil
| | - Zahra Kargarpour
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.); (V.K.); (M.B.S.); (Z.K.)
| | - Reinhard Gruber
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.); (V.K.); (M.B.S.); (Z.K.)
- Department of Periodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- Correspondence: ; Tel.: +43-(0)-1-40070-2660
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Shao F, Panahipour L, Omerbasic A, Tang F, Gruber R. Dalbergiones lower the inflammatory response in oral cells in vitro. Clin Oral Investig 2022; 26:5419-5428. [PMID: 35505200 PMCID: PMC9381493 DOI: 10.1007/s00784-022-04509-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 04/25/2022] [Indexed: 11/30/2022]
Abstract
Objectives Periodontitis is a global health burden that underlines the demand for anti-inflammatory treatment. Dalbergia melanoxylon being a rich source of flavonoids has been widely used in traditional medicine but the potential anti-inflammatory activity of its dalbergiones remains to be shown. Material and methods We have isolated 3′-hydroxy-4,4′-dimethoxydalbergione, 4-methoxydalbergione, and 4′-hydroxy-4-methoxydalbergione from Dalbergia melanoxylon and tested their potential anti-inflammatory activity. Results All dalbergiones are potent inhibitors of an LPS-induced inflammatory response of RAW 264.7 macrophages. This is specified by IL1β and IL6 production, and the p65 nuclear translocation. Consistently, in primary macrophages, the dalbergiones caused an M1-to-M2 polarization switch indicated by the decreased ration of IL1β and IL6 versus arginase 1 and YM1 expression. To implement oral cells, we have used gingival fibroblasts exposed to IL1β and TNFα. Consistently, all dalbergiones reduced the expression of IL6 and IL8 as well as the nuclear translocation of p65. Conclusion These findings increase the accumulating knowledge on dalbergiones and extend it towards its capacity to lower the inflammatory response of oral cells. Clinical relevance These findings are another piece of evidence that supports the use of herbal medicine to potentially lower inflammatory events related to dentistry.
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Affiliation(s)
- Feng Shao
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria.,Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Meiling Road 1688, 330004, Nanchang, China
| | - Layla Panahipour
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria
| | - Anes Omerbasic
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria
| | - Fangrui Tang
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Meiling Road 1688, 330004, Nanchang, China
| | - Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria. .,Department of Periodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010, Bern, Switzerland. .,Austrian Cluster for Tissue Regeneration, Donaueschingenstraße 13, 1200, Vienna, Austria.
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Shao F, Panahipour L, Sordi MB, Tang F, Liu R, Gruber R. Heartwood of Dalbergia cochinchinensis: 4,7,2'-Trihydroxy-4'-methoxyisoflavanol and 6,4'-Dihydroxy-7-methoxyflavane Reduce Cytokine and Chemokine Expression In Vitro. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27041321. [PMID: 35209110 PMCID: PMC8879141 DOI: 10.3390/molecules27041321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/14/2021] [Accepted: 02/11/2022] [Indexed: 02/02/2023]
Abstract
Dalbergia cochinchinensis has been widely used in traditional medicine because of its flavonoids; however, the impact of the flavonoids to modulate the inflammatory response to oral cells remains to be described. For this aim, we isolated 4,7,2'-trihydroxy-4'-methoxyisoflavanol (472T4MIF) and 6,4'-dihydroxy-7-methoxyflavane (64D7MF) from the heartwood of D. cochinchinensis and confirmed the chemical structure by nuclear magnetic resonance. We show here that both flavonoids are inhibitors of an inflammatory response of murine RAW 264.7 inflammatory macrophages stimulated by LPS. This is indicated by interleukin (IL)1, IL6, and chemokine CCL2 production besides the phosphorylation of p65. Consistently, in primary murine macrophages, both flavonoids decreased the inflammatory response by lowering LPS-induced IL1 and IL6 expression. To introduce oral cells, we have used human gingival fibroblasts and provoked the inflammatory response by exposing them to IL1β and TNFα. Under these conditions, 472T4MIF, but not 64D7MF, reduced the expression of chemokines CXCL1 and CXCL2. Taken together, we identified two flavonoids that can reduce the expression of cytokines and chemokines in macrophages and fibroblastic cells.
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Affiliation(s)
- Feng Shao
- Department of Oral Biology, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (M.B.S.)
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China; (F.T.); (R.L.)
- Key Laboratory of Innovation Drug and Efficient Energy-Saving Pharmaceutical Equipment, Jiangxi University of Chinese Medicine, Nanchang 330004, China
- Correspondence: (F.S.); (R.G.)
| | - Layla Panahipour
- Department of Oral Biology, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (M.B.S.)
| | - Mariane Beatriz Sordi
- Department of Oral Biology, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (M.B.S.)
- Department of Dentistry, Federal University of Santa Catarina, Florianopolis 88040-900, Brazil
| | - Fangrui Tang
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China; (F.T.); (R.L.)
| | - Ronghua Liu
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China; (F.T.); (R.L.)
| | - Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (M.B.S.)
- Department of Periodontology, School of Dental Medicine, University of Bern, 3012 Bern, Switzerland
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- Correspondence: (F.S.); (R.G.)
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Anti-Inflammatory Activity of a Demineralized Bone Matrix: An In Vitro Pilot Study. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12020876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Demineralized bone matrix (DBM) is commonly used for the reconstruction of bone defects. Early graft consolidation involves a transient inflammatory process. It is, however, unclear whether DBM can modulate this process. To test this possibility, we prepared acid lysates of demineralized ground cortical (DGC) and moldable demineralized fibers (MDF). Murine RAW 264.7 and primary bone marrow macrophages were exposed to acid lysates of DGC and MFD prior to provoking an inflammatory response with lipopolysaccharide (LPS). Similarly, murine ST2 mesenchymal cells were exposed to DGC and MFD with and without interleukin 1β (IL1) and TNFα. We show here that acid lysates of DGC and MFD reduced the expression of IL1 and IL6 in RAW 264.7 macrophages, as determined by RT-PCR and, for IL6, by immunoassay. This response was confirmed with primary macrophages. Likewise, desalted acid lysates exert anti-inflammatory properties on RAW 264.7 cells and in ST2 cells, the forced expression of IL6, inducible nitric oxide synthase (iNOS) and chemokine ligand 5 (CCL5) was reduced. These in vitro findings suggest that DGC and MFD lower the inflammation-induced expression of inflammatory mediators in murine cell-based bioassays.
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Panahipour L, Moghaddam DM, Nasirzade J, Kargarpour Z, Gruber R. RNAseq of TGF-β receptor type I kinase-dependent genes in oral fibroblast exposed to milk. BMC Oral Health 2021; 21:581. [PMID: 34789212 PMCID: PMC8597240 DOI: 10.1186/s12903-021-01913-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/05/2021] [Indexed: 11/30/2022] Open
Abstract
Background Milk is a rich source of natural growth factors that may support oral tissue homeostasis and wound healing. We had shown earlier that blocking TGF-β receptor type I kinase with the inhibitor SB431542 abolished the expression of IL11 and other genes in human gingival fibroblasts exposed to the aqueous fraction of milk. Our aim was to identify the entire signature of TGF-β receptor type I kinase-dependent genes regulated by the aqueous fraction of human milk. Result RNAseq revealed 99 genes being strongly regulated by milk requiring activation of the SB431542-dependent TGF-β receptor type I kinase. Among the SB431542-dependent genes is IL11 but also cadherins, claudins, collagens, potassium channels, keratins, solute carrier family proteins, transcription factors, transmembrane proteins, tumor necrosis factor ligand superfamily members, and tetraspanin family members. When focusing on our candidate gene, we could identify D609 to suppress IL11 expression, independent of phospholipase C, sphinosine-1 phosphate synthesis, and Smad-3 phosphorylation and its nuclear translocation. In contrast, genistein and blocking phosphoinositide 3-kinases by wortmannin and LY294002 increased the milk-induced IL11 expression in gingival fibroblasts. Conclusion Taken together, our data revealed TGF-β receptor type I kinase signaling to cause major changes of the genetic signature of gingival fibroblasts exposed to aqueous fraction of human milk. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-021-01913-5.
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Affiliation(s)
- Layla Panahipour
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria
| | | | - Jila Nasirzade
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria
| | - Zahra Kargarpour
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria
| | - Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria. .,Department of Periodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010, Bern, Switzerland. .,Austrian Cluster for Tissue Regeneration, Donaueschingenstraße 13, 1200, Vienna, Austria.
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Classical Dichotomy of Macrophages and Alternative Activation Models Proposed with Technological Progress. BIOMED RESEARCH INTERNATIONAL 2021; 2021:9910596. [PMID: 34722776 PMCID: PMC8553456 DOI: 10.1155/2021/9910596] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 09/25/2021] [Indexed: 02/05/2023]
Abstract
Macrophages are important immune cells that participate in the regulation of inflammation in implant dentistry, and their activation/polarization state is considered to be the basis for their functions. The classic dichotomy activation model is commonly accepted, however, due to the discovery of macrophage heterogeneity and more functional and iconic exploration at different technologies; some studies have discovered the shortcomings of the dichotomy model and have put forward the concept of alternative activation models through the application of advanced technologies such as cytometry by time-of-flight (CyTOF), single-cell RNA-seq (scRNA-seq), and hyperspectral image (HSI). These alternative models have great potential to help macrophages divide phenotypes and functional genes.
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Mosser DM, Hamidzadeh K, Goncalves R. Macrophages and the maintenance of homeostasis. Cell Mol Immunol 2020; 18:579-587. [PMID: 32934339 PMCID: PMC7491045 DOI: 10.1038/s41423-020-00541-3] [Citation(s) in RCA: 211] [Impact Index Per Article: 52.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/17/2020] [Indexed: 12/17/2022] Open
Abstract
There have been many chapters written about macrophage polarization. These chapters generally focus on the role of macrophages in orchestrating immune responses by highlighting the T-cell-derived cytokines that shape these polarizing responses. This bias toward immunity is understandable, given the importance of macrophages to host defense. However, macrophages are ubiquitous and are involved in many different cellular processes, and describing them as immune cells is undoubtedly an oversimplification. It disregards their important roles in development, tissue remodeling, wound healing, angiogenesis, and metabolism, to name just a few processes. In this chapter, we propose that macrophages function as transducers in the body. According to Wikipedia, “A transducer is a device that converts energy from one form to another.” The word transducer is a term used to describe both the “sensor,” which can interpret a wide range of energy forms, and the “actuator,” which can switch voltages or currents to affect the environment. Macrophages are able to sense a seemingly endless variety of inputs from their environment and transduce these inputs into a variety of different response outcomes. Thus, rather than functioning as immune cells, they should be considered more broadly as cellular transducers that interpret microenvironmental changes and actuate vital tissue responses. In this chapter, we will describe some of the sensory stimuli that macrophages perceive and the responses they make to these stimuli to achieve their prime directive, which is the maintenance of homeostasis.
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Affiliation(s)
- David M Mosser
- The Department of Cell Biology and Molecular Genetics, The University of Maryland, College Park, MD, 20742, USA.
| | - Kajal Hamidzadeh
- The Department of Cell Biology and Molecular Genetics, The University of Maryland, College Park, MD, 20742, USA
| | - Ricardo Goncalves
- The Department of General Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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